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From: "Chengli (Cheng Li)" <c.l@huawei.com>
To: "Ketan Talaulikar (ketant)" <ketant@cisco.com>, Robert Raszuk <robert@raszuk.net>
CC: "draft-ietf-spring-segment-routing-policy@ietf.org" <draft-ietf-spring-segment-routing-policy@ietf.org>, idr wg <idr@ietf.org>, SPRING WG <spring@ietf.org>, Fangsheng <fangsheng@huawei.com>, "stefano previdi" <stefano@previdi.net>
Thread-Topic: [Idr] Comments: Route Origin Community in SR Policy(draft-ietf-spring-segment-routing-policy)
Thread-Index: AdYek4MmKSUhOySlR86q9L0AexcDnQANyexg//+EXgCAHHfPgP/8mcQg
Date: Mon, 1 Jun 2020 07:25:16 +0000
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Subject: Re: [spring] [Idr] Comments: Route Origin Community in SR Policy(draft-ietf-spring-segment-routing-policy)
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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Mon, 1 Jun 2020 09:32:44 -0400
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To: "Ketan Talaulikar (ketant)" <ketant@cisco.com>
Cc: "Chengli (Cheng Li)" <c.l@huawei.com>, Fangsheng <fangsheng@huawei.com>,  Robert Raszuk <robert@raszuk.net>, SPRING WG <spring@ietf.org>, Yangang <yangang@huawei.com>,  "draft-ietf-spring-segment-routing-policy@ietf.org" <draft-ietf-spring-segment-routing-policy@ietf.org>, idr wg <idr@ietf.org>,  stefano previdi <stefano@previdi.net>
Content-Type: multipart/related; boundary="00000000000017bea705a705d56c"
Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/FVD4XwqXWHHPOrerRSHK6CcPQek>
Subject: Re: [spring] [Idr] Comments: Route Origin Community in SR Policy(draft-ietf-spring-segment-routing-policy)
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On Thu, May 28, 2020 at 6:32 AM Ketan Talaulikar (ketant) <ketant@cisco.com=
>
wrote:

> Hi Gyan,
>
>
>
> Could I refer you to the examples in
> https://tools.ietf.org/html/draft-filsfils-spring-sr-policy-consideration=
s-05#section-4
> as that might clarify the various options for signalling redundant
> information (both as different BGP NLRI, via redundant BGP paths, or via
> multiple protocol sources).
>
>  Gyan> Thanks Ketan.  So this scenario would be example 2 recommended wit=
h
> =E2=80=9Cauto RD=E2=80=9D type 1 unique by loopback so both paths are ins=
talled in BGP sent
> to SR-TE for instantiation which now picks greater candidate path number =
as
> Active path.
>
> Thanks,
>
> Ketan
>
>
>
> *From:* Gyan Mishra <hayabusagsm@gmail.com>
>
> *Sent:* 22 May 2020 00:48
> *To:* Robert Raszuk <robert@raszuk.net>
> *Cc:* Chengli (Cheng Li) <c.l@huawei.com>; Fangsheng <fangsheng@huawei.co=
m>;
> Ketan Talaulikar (ketant) <ketant@cisco.com>; SPRING WG <spring@ietf.org>=
;
> Yangang <yangang@huawei.com>;
> draft-ietf-spring-segment-routing-policy@ietf.org; idr wg <idr@ietf.org>;
> stefano previdi <stefano@previdi.net>
> *Subject:* Re: [spring] [Idr] Comments: Route Origin Community in SR
> Policy(draft-ietf-spring-segment-routing-policy)
>
>
>
>
>
> On Wed, May 20, 2020 at 8:59 AM Robert Raszuk <robert@raszuk.net> wrote:
>
> Hi,
>
>
>
> > the node-address is generated by CSG1
>
>
>
> I don't think CSG1 needs to "generate" anything. Peers which send you
> particular policy are well known at CSG1.
>
>
>
> > The process described above will result in a waste of redundant
> candidate paths on CSG1,
>
>
>
> Well what you call "waste" I call redundancy. Sure keeping extra paths
> requires some cost, but building redundancy in control plane pays off.
>
>
>
>     Gyan> I agree with Robert that the additional candidate path sent by
> the RR could be used for redundancy.   However, I think the context of  S=
R
> TE is that each candidate path is a single path option not multiple as th=
e
> redundancy is provided by different candidate paths.  That is the issue I
> am guessing.
>
>
>
>
>
> Thx,
> R.
>
>
>
>
>
>
>
>
>
> On Wed, May 20, 2020 at 2:32 PM Fangsheng <fangsheng@huawei.com> wrote:
>
> Hi Robert,
>
> Take the following picture as an example, I think you can understand our
> problem more easily.
>
> The controller needs to notify the headend CSG1 through BGP SR Policy to
> create a candidate path of SR Policy. This BGP SR Policy route will be
> advertised to CSG1 through RR1 and RR2.
>
> According to the definition in draft, the key of a candidate path is
> <Protocol-Origin, originator, discriminator>, where originator =3D <ASN,
> node-address>, so a complete candidate path key is <Protocol-Origin, ASN,
> node-address , discriminator>.
>
> However, in this specific example, the node-address is generated by CSG1,
> and because CSG1 receives BGP SR Policy routes from RR1 and RR2,
> respectively, CSG1 will get two different node-addresses. CSG1 thinks tha=
t
> it is necessary to create two  candidate paths, and the controller does n=
ot
> know what the node-address CSG1 will eventually generate. Maybe:
>
> Candidate path 1=E2=80=99 key:  <*BGP,RR1=E2=80=99s ASN, RR1=E2=80=99 BGP=
 Router ID,
> discriminator1*>
>
> Candidate path 2=E2=80=99 key:  <*BGP,RR2=E2=80=99s ASN, RR2=E2=80=99 BGP=
 Router ID,
> discriminator2*>
>
> The process described above will result in a waste of redundant candidate
> paths on CSG1,
>
> At the same time, when CSG1 needs to announce the SR Policy information t=
o
> the controller through BGP LS, it needs to carry the keys of the candidat=
e
> path in it, and the controller cannot recognize these keys.
>
>
>
>
>
>
>
> To solve these problems,  We recommend carrying the Route Origin Communit=
y
> (defined in RFC 4360) directly when the controller advertises BGP routes.
>
> In this way, the key  of the CP is determined by the controller and will
> not change during the advertisement of BGP routes.
>
>
>
>
>
>
>
>
>
> *=E5=8F=91=E4=BB=B6=E4=BA=BA**:* Ketan Talaulikar (ketant) [mailto:ketant=
@cisco.com]
> *=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4**:* 2020=E5=B9=B45=E6=9C=8818=E6=97=
=A5 20:00
> *=E6=94=B6=E4=BB=B6=E4=BA=BA**:* Robert Raszuk <robert@raszuk.net>
> *=E6=8A=84=E9=80=81**:* Chengli (Cheng Li) <c.l@huawei.com>;
> draft-ietf-spring-segment-routing-policy@ietf.org; idr wg <idr@ietf.org>;
> SPRING WG <spring@ietf.org>; Fangsheng <fangsheng@huawei.com>; stefano
> previdi <stefano@previdi.net>
> *=E4=B8=BB=E9=A2=98**:* RE: [Idr] Comments: Route Origin Community in SR
> Policy(draft-ietf-spring-segment-routing-policy)
>
>
>
> Hi Robert,
>
>
>
> You are right that the =E2=80=9COriginator=E2=80=9D is not used in BGP be=
st path and is
> just for a tie-breaking logic in SRTE between paths from different
> protocols and controllers. I doubt if there is a functional issue here.
>
>
>
> I thought that Chengli was bringing in some new/different requirement for
> the =E2=80=9COriginator=E2=80=9D field for some deployment design. I have=
n=E2=80=99t seen a
> response/clarification from him as yet, and so perhaps I misunderstood hi=
m
> in which case we are ok here.
>
>
>
> Thanks,
>
> Ketan
>
>
>
> *From:* Robert Raszuk <robert@raszuk.net>
> *Sent:* 30 April 2020 14:46
> *To:* Ketan Talaulikar (ketant) <ketant@cisco.com>
> *Cc:* Chengli (Cheng Li) <chengli13@huawei.com>;
> draft-ietf-spring-segment-routing-policy@ietf.org; idr wg <idr@ietf.org>;
> SPRING WG <spring@ietf.org>; Fangsheng <fangsheng@huawei.com>; stefano
> previdi <stefano@previdi.net>
> *Subject:* Re: [Idr] Comments: Route Origin Community in SR
> Policy(draft-ietf-spring-segment-routing-policy)
>
>
>
> Hi Chengli and Ketan,
>
>
>
> Well I think (perhaps to your surprise) the current text is actually
> correct.
>
>
>
> See the overall idea of section 2.4 is not to define the real source of
> the candidate path. That is done in section 2.5 The idea here is to keep
> multiple *paths or versions* of the candidate paths in the local system
> uniquely.
>
>
>
> See if you continue reading section 2.6 demystifies the real objective:
>
>
>
>    The tuple <Protocol-Origin, originator, discriminator> uniquely
>
>    identifies a candidate path.
>
>
>
> So the real originator is encoded in discriminator and here it just means=
 the peer candidate path was
>
> received from. And if you read on this entire exercise only servers best =
path selection as described in section 2.9.
>
>
>
> .... the following order until only one valid best path is selected:
>
>
>
>    1.  Higher value of Protocol-Origin is selected.
>
>
>
>    2.  If specified by configuration, prefer the existing installed
>
>        path.
>
>
>
>    3.  Lower value of originator is selected.
>
>
>
>    4.  Finally, the higher value of discriminator is selected.
>
>
>
> +
>
>       The originator allows an operator to have multiple redundant
>
>       controllers and still maintain a deterministic behaviour over
>
>       which of them are preferred even if they are providing the same
>
>       candidate paths for the same SR policies to the headend.
>
>
>
> Thx,
> R.
>
>
>
> On Thu, Apr 30, 2020 at 10:46 AM Ketan Talaulikar (ketant) <ketant=3D
> 40cisco.com@dmarc.ietf.org> wrote:
>
> Hi Cheng,
>
>
>
> I assume you are recommending the use of Route Origin Extended Community =
(
> https://tools.ietf.org/html/rfc4360#section-5) for conveying the =E2=80=
=9C
> Originator=E2=80=9D when the SR Policy update is propagated over eBGP ses=
sions
> via other eBGP/iBGP sessions instead of direct peering with the headend.
>
>
>
> I believe it does address the scenario you describe given that it is
> expected that SR Policy propagation via BGP is happening within a single
> administrative domain even if it comprises of multiple ASes.
>
>
>
> Also copying the IDR WG for inputs since this would likely need to be
> updated in draft-ietf-idr-segment-routing-te-policy.
>
>
>
> Thanks,
>
> Ketan
>
>
>
> *From:* spring <spring-bounces@ietf.org> *On Behalf Of *Chengli (Cheng Li=
)
> *Sent:* 30 April 2020 07:34
> *To:* draft-ietf-spring-segment-routing-policy@ietf.org
> *Cc:* SPRING WG <spring@ietf.org>; huruizhao <huruizhao@huawei.com>;
> Fangsheng <fangsheng@huawei.com>
> *Subject:* [spring] Comments: Route Origin Community in SR
> Policy(draft-ietf-spring-segment-routing-policy)
>
>
>
> Hi authors,
>
>
>
> In section 2.4 of [draft-ietf-spring-segment-routing-policy-06],
> introduced how the node-address of "Originator of CP(Candidate Path)" is
> generated when the Protocol-Origin is BGP. It says:
>
>     =E2=80=9CProtocol-Origin is BGP SR Policy, it is provided by the BGP
> component on the headend and is:
>
>      o  the BGP Router ID and ASN of the node/controller signalling the
> candidate path when it has a BGP session to the headend, OR
>
>      o  the BGP Router ID of the eBGP peer signalling the candidate path
> along with ASN of origin when the signalling is done via one or  more
> intermediate eBGP routers, OR
>
>      o  the BGP Originator ID [RFC4456] and the ASN of the
> node/controller  when the signalling is done via one or more
> route-reflectors over  iBGP session.=E2=80=9D
>
>
>
> In the operator's network, in order to reduce the number of  BGP sessions
> in controller and achieve scalability, the controller only establishes eB=
GP
> peer with the RR. And the RR establishes iBGP peers with the headends.. A=
s
> mentioned in the draft, the headend will use the RR's Router ID as the CP=
's
> node-address (the signaling is done via route transmission from RR to the
> headend instead of route reflection).  The headend needs to carry the CP'=
s
> key when reporting the SR Policy status to the controller through BGP-LS.
> And there is a problem that the controller may not recognize the key
> because the node-address is generated by the RR node.
>
>
>
> For network robustness, two or more RRs are usually deployed. This will
> introduce another problem.. When the same CP advertised by the controller
> is delivered to the headend through different RRs, the headend cannot
> distinguish whether it is the same CP because the node-address in the CPs=
'
> key  comes from different RRs.
>
>
>
> To solve these problems,  We recommend carrying the Route Origin Communit=
y
> (defined in RFC 4360) directly when the controller advertises BGP routes.
> In this way, the key  of the CP is determined by the controller and will
> not change during the advertisement of BGP routes.
>
>
>
> Thanks,
>
> Cheng
>
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
> --
>
> <http://www.verizon.com/>
>
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
>
> *Gyan Mishra*
>
> *Network Solutions Architect *
>
>
>
> *M 301 502-1347 13101 Columbia Pike
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
> *Silver Spring, MD
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
>
>
>
--=20

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--00000000000017bea605a705d56b
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div><br></div><div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">On Thu, May 28, 2020 at 6:32 AM Ketan Talaulikar (ketant) &=
lt;<a href=3D"mailto:ketant@cisco.com">ketant@cisco.com</a>&gt; wrote:<br><=
/div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bo=
rder-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-co=
lor:rgb(204,204,204)">





<div lang=3D"EN-IN" link=3D"blue" vlink=3D"purple">
<div class=3D"m_5722347963350161467WordSection1">
<p class=3D"MsoNormal"><span>Hi Gyan,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span>Could I refer you to the examples in
</span><a href=3D"https://tools.ietf.org/html/draft-filsfils-spring-sr-poli=
cy-considerations-05#section-4" target=3D"_blank">https://tools.ietf.org/ht=
ml/draft-filsfils-spring-sr-policy-considerations-05#section-4</a> as that =
might clarify the various options for signalling redundant
 information (both as different BGP NLRI, via redundant BGP paths, or via m=
ultiple protocol sources).<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0Gyan&gt; Thanks Ketan.=C2=A0 So this sc=
enario would be example 2 recommended with =E2=80=9Cauto RD=E2=80=9D type 1=
 unique by loopback so both paths are installed in BGP sent to SR-TE for in=
stantiation which now picks greater candidate path number as Active path. =
=C2=A0<u></u></p>
<p class=3D"MsoNormal">Thanks,<u></u><u></u></p>
<p class=3D"MsoNormal">Ketan<span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Gyan Mishra &lt;<a href=3D"mailto:hayabusagsm@gmail.com" target=
=3D"_blank">hayabusagsm@gmail.com</a>&gt;
<br></span></p></div></div><div lang=3D"EN-IN" link=3D"blue" vlink=3D"purpl=
e"><div class=3D"m_5722347963350161467WordSection1"><p class=3D"MsoNormal">=
<span lang=3D"EN-US">
<b>Sent:</b> 22 May 2020 00:48<br>
<b>To:</b> Robert Raszuk &lt;<a href=3D"mailto:robert@raszuk.net" target=3D=
"_blank">robert@raszuk.net</a>&gt;<br>
<b>Cc:</b> Chengli (Cheng Li) &lt;<a href=3D"mailto:c.l@huawei.com" target=
=3D"_blank">c.l@huawei.com</a>&gt;; Fangsheng &lt;<a href=3D"mailto:fangshe=
ng@huawei.com" target=3D"_blank">fangsheng@huawei.com</a>&gt;; Ketan Talaul=
ikar (ketant) &lt;<a href=3D"mailto:ketant@cisco.com" target=3D"_blank">ket=
ant@cisco.com</a>&gt;; SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" tar=
get=3D"_blank">spring@ietf.org</a>&gt;; Yangang &lt;<a href=3D"mailto:yanga=
ng@huawei.com" target=3D"_blank">yangang@huawei.com</a>&gt;; <a href=3D"mai=
lto:draft-ietf-spring-segment-routing-policy@ietf.org" target=3D"_blank">dr=
aft-ietf-spring-segment-routing-policy@ietf.org</a>; idr wg &lt;<a href=3D"=
mailto:idr@ietf.org" target=3D"_blank">idr@ietf.org</a>&gt;;
 stefano previdi &lt;<a href=3D"mailto:stefano@previdi.net" target=3D"_blan=
k">stefano@previdi.net</a>&gt;<br>
<b>Subject:</b> Re: [spring] [Idr] Comments: Route Origin Community in SR P=
olicy(draft-ietf-spring-segment-routing-policy)<u></u><u></u></span></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<div>
<p class=3D"MsoNormal">On Wed, May 20, 2020 at 8:59 AM Robert Raszuk &lt;<a=
 href=3D"mailto:robert@raszuk.net" target=3D"_blank">robert@raszuk.net</a>&=
gt; wrote:<u></u><u></u></p>
</div>
<div>
<blockquote style=3D"border-style:none none none solid;border-left-width:1p=
t;padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm;border-left-co=
lor:rgb(204,204,204)">
<div>
<p class=3D"MsoNormal">Hi,<u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">&gt; the node-address is generated by CSG1=C2=A0=C2=
=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">I don&#39;t think CSG1 needs to &quot;generate&quot;=
 anything. Peers which send you particular policy are well known at CSG1.=
=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">&gt; The process described above will result in a wa=
ste of redundant candidate paths on CSG1,=C2=A0=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Well what you call &quot;waste&quot; I call redundan=
cy. Sure keeping extra paths requires some cost, but building redundancy in=
 control plane pays off.=C2=A0<u></u><u></u></p>
</div>
</div>
</blockquote>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0 =C2=A0 Gyan&gt; I agree with Robert that the =
additional candidate path sent by the RR could be used for redundancy. =C2=
=A0 However, I think the context of =C2=A0SR TE is that each candidate path=
 is a single path option not multiple as the redundancy is
 provided by different candidate paths.=C2=A0 That is the issue I am guessi=
ng.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<blockquote style=3D"border-style:none none none solid;border-left-width:1p=
t;padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm;border-left-co=
lor:rgb(204,204,204)">
<div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Thx,<br>
R.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal">On Wed, May 20, 2020 at 2:32 PM Fangsheng &lt;<a hre=
f=3D"mailto:fangsheng@huawei.com" target=3D"_blank">fangsheng@huawei.com</a=
>&gt; wrote:<u></u><u></u></p>
</div>
</div>
<div>
<blockquote style=3D"border-style:none none none solid;border-left-width:1p=
t;padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm;border-left-co=
lor:rgb(204,204,204)">
<div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:rgb(31,73,125)">Hi
</span><span>Robert,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>Take the following picture as an example, I th=
ink you can understand our problem more easily.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>The controller needs to notify the headend CSG=
1 through BGP SR Policy to create a candidate path of SR Policy. This BGP S=
R Policy route
 will be advertised to CSG1 through RR1 and RR2.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>According to the definition in draft, the key =
of a candidate path is &lt;Protocol-Origin, originator, discriminator&gt;, =
where originator =3D &lt;ASN,
 node-address&gt;, so a complete candidate path key is &lt;Protocol-Origin,=
 ASN, node-address , discriminator&gt;.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>However, in this specific example, the node-ad=
dress is generated by CSG1, and because CSG1 receives BGP SR Policy routes =
from RR1 and RR2,
 respectively, CSG1 will get two different node-addresses. CSG1 thinks that=
 it is necessary to create two =C2=A0candidate paths, and the controller do=
es not know what the node-address CSG1 will eventually generate. Maybe:<u><=
/u><u></u></span></p>
<p class=3D"MsoNormal"><span>Candidate path 1<span lang=3D"ZH-CN">=E2=80=99=
</span> key:=C2=A0 &lt;<i>BGP,<span style=3D"color:red">RR1</span><span lan=
g=3D"ZH-CN">=E2=80=99</span>s ASN,
<span style=3D"color:red">RR1</span><span lang=3D"ZH-CN">=E2=80=99</span> B=
GP Router ID, discriminator1</i>&gt;<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>Candidate path 2<span lang=3D"ZH-CN">=E2=80=99=
</span> key:=C2=A0 &lt;<i>BGP,<span style=3D"color:red">RR2</span><span lan=
g=3D"ZH-CN">=E2=80=99</span>s ASN,
<span style=3D"color:red">RR2</span><span lang=3D"ZH-CN">=E2=80=99</span> B=
GP Router ID, discriminator2</i>&gt;<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>The process described above will result in a w=
aste of redundant candidate paths on CSG1,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>At the same time, when CSG1 needs to announce =
the SR Policy information to the controller through BGP LS, it needs to car=
ry the keys of
 the candidate path in it, and the controller cannot recognize these keys.<=
u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><img border=3D"0" src=3D"cid:17=
2700ee461ad7999131" style=3D"width: 539px; max-width: 100%;"></span><span><=
u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:rgb(31,73,125)">=C2=A0</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
To solve these problems,=C2=A0 We recommend carrying the Route Origin Commu=
nity (defined in RFC 4360) directly when
 the controller advertises BGP routes.=C2=A0</span><span><u></u><u></u></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
In this way, the key=C2=A0 of the CP is determined by the controller and wi=
ll not change during the advertisement
 of BGP routes.</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:rgb(31,73,125)=
">=C2=A0</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:rgb(31,73,125)">=C2=A0</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:rgb(31,73,125)">=C2=A0</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:rgb(31,73,125)">=C2=A0</span><span><u></u><u></u></span></p>
<div>
<div style=3D"border-style:solid none none;border-top-width:1pt;padding:3pt=
 0cm 0cm;border-top-color:rgb(225,225,225)">
<p class=3D"MsoNormal"><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;M=
icrosoft YaHei&quot;,sans-serif">=E5=8F=91=E4=BB=B6=E4=BA=BA</span></b><b><=
span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,sans-s=
erif">:</span></b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft=
 YaHei&quot;,sans-serif">
 Ketan Talaulikar (ketant) [mailto:<a href=3D"mailto:ketant@cisco.com" targ=
et=3D"_blank" style=3D"font-family:&quot;Microsoft YaHei&quot;,sans-serif">=
ketant@cisco.com</a>]
<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,sans-serif">=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4</span></b><b><span la=
ng=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,sans-serif">:=
</span></b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&=
quot;,sans-serif">
 2020</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,sans-serif">=E5=B9=B4</span><span lang=3D"EN-US" style=3D"font-famil=
y:&quot;Microsoft YaHei&quot;,sans-serif">5</span><span lang=3D"ZH-CN" styl=
e=3D"font-family:&quot;Microsoft YaHei&quot;,sans-serif">=E6=9C=88</span><s=
pan lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,sans-se=
rif">18</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaH=
ei&quot;,sans-serif">=E6=97=A5</span><span lang=3D"EN-US" style=3D"font-fam=
ily:&quot;Microsoft YaHei&quot;,sans-serif">
 20:00<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,sans-serif">=E6=94=B6=E4=BB=B6=E4=BA=BA</span></b><b><span lang=3D"EN-=
US" style=3D"font-family:&quot;Microsoft YaHei&quot;,sans-serif">:</span></=
b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,san=
s-serif">
 Robert Raszuk &lt;<a href=3D"mailto:robert@raszuk.net" target=3D"_blank" s=
tyle=3D"font-family:&quot;Microsoft YaHei&quot;,sans-serif">robert@raszuk.n=
et</a>&gt;<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,sans-serif">=E6=8A=84=E9=80=81</span></b><b><span lang=3D"EN-US" style=
=3D"font-family:&quot;Microsoft YaHei&quot;,sans-serif">:</span></b><span l=
ang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,sans-serif">
 Chengli (Cheng Li) &lt;<a href=3D"mailto:c.l@huawei.com" target=3D"_blank"=
 style=3D"font-family:&quot;Microsoft YaHei&quot;,sans-serif">c.l@huawei.co=
m</a>&gt;;
<a href=3D"mailto:draft-ietf-spring-segment-routing-policy@ietf.org" target=
=3D"_blank" style=3D"font-family:&quot;Microsoft YaHei&quot;,sans-serif">
draft-ietf-spring-segment-routing-policy@ietf.org</a>; idr wg &lt;<a href=
=3D"mailto:idr@ietf.org" target=3D"_blank" style=3D"font-family:&quot;Micro=
soft YaHei&quot;,sans-serif">idr@ietf.org</a>&gt;; SPRING WG &lt;<a href=3D=
"mailto:spring@ietf.org" target=3D"_blank" style=3D"font-family:&quot;Micro=
soft YaHei&quot;,sans-serif">spring@ietf.org</a>&gt;; Fangsheng &lt;<a href=
=3D"mailto:fangsheng@huawei.com" target=3D"_blank" style=3D"font-family:&qu=
ot;Microsoft YaHei&quot;,sans-serif">fangsheng@huawei.com</a>&gt;;
 stefano previdi &lt;<a href=3D"mailto:stefano@previdi.net" target=3D"_blan=
k" style=3D"font-family:&quot;Microsoft YaHei&quot;,sans-serif">stefano@pre=
vidi.net</a>&gt;<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,sans-serif">=E4=B8=BB=E9=A2=98</span></b><b><span lang=3D"EN-US" style=
=3D"font-family:&quot;Microsoft YaHei&quot;,sans-serif">:</span></b><span l=
ang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,sans-serif">
 RE: [Idr] Comments: Route Origin Community in SR Policy(draft-ietf-spring-=
segment-routing-policy)</span><span><u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span><span><u></u><u></=
u></span></p>
<p class=3D"MsoNormal"><span>Hi Robert,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>You are right that the
<span lang=3D"ZH-CN">=E2=80=9C</span>Originator<span lang=3D"ZH-CN">=E2=80=
=9D</span> is not used in BGP best path and is just for a tie-breaking logi=
c in SRTE between paths from different protocols and controllers. I doubt i=
f there is a functional issue here.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>I thought that Chengli was bringing in some ne=
w/different requirement for the
<span lang=3D"ZH-CN">=E2=80=9C</span>Originator<span lang=3D"ZH-CN">=E2=80=
=9D</span> field for some deployment design. I haven<span lang=3D"ZH-CN">=
=E2=80=99</span>t seen a response/clarification from him as yet, and so per=
haps I misunderstood him in which case we are ok here.<u></u><u></u></span>=
</p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>Thanks,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>Ketan<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Robert Raszuk &lt;<a href=3D"mailto:robert@raszuk.net" target=
=3D"_blank">robert@raszuk.net</a>&gt;
<br>
<b>Sent:</b> 30 April 2020 14:46<br>
<b>To:</b> Ketan Talaulikar (ketant) &lt;<a href=3D"mailto:ketant@cisco.com=
" target=3D"_blank">ketant@cisco.com</a>&gt;<br>
<b>Cc:</b> Chengli (Cheng Li) &lt;<a href=3D"mailto:chengli13@huawei.com" t=
arget=3D"_blank">chengli13@huawei.com</a>&gt;;
<a href=3D"mailto:draft-ietf-spring-segment-routing-policy@ietf.org" target=
=3D"_blank">
draft-ietf-spring-segment-routing-policy@ietf.org</a>; idr wg &lt;<a href=
=3D"mailto:idr@ietf.org" target=3D"_blank">idr@ietf.org</a>&gt;; SPRING WG =
&lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a=
>&gt;; Fangsheng &lt;<a href=3D"mailto:fangsheng@huawei.com" target=3D"_bla=
nk">fangsheng@huawei.com</a>&gt;;
 stefano previdi &lt;<a href=3D"mailto:stefano@previdi.net" target=3D"_blan=
k">stefano@previdi.net</a>&gt;<br>
<b>Subject:</b> Re: [Idr] Comments: Route Origin Community in SR Policy(dra=
ft-ietf-spring-segment-routing-policy)</span><span><u></u><u></u></span></p=
>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<div>
<p class=3D"MsoNormal"><span>Hi Chengli and Ketan,<u></u><u></u></span></p>
<div>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span>Well I think (perhaps to your surprise) the cu=
rrent text is actually correct.=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span>See the overall idea of section 2.4 is not to =
define the real source of the candidate path. That is done in section 2.5 T=
he idea here is
 to keep multiple *paths or versions* of the candidate paths in the local s=
ystem uniquely.=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span>See if you continue reading section 2.6 demyst=
ifies the real objective:=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
</div>
<div>
<pre style=3D"break-before:page;font-family:monospace"><span style=3D"font-=
family:monospace;color:black">=C2=A0=C2=A0 The tuple &lt;Protocol-Origin, o=
riginator, discriminator&gt; uniquely</span><span style=3D"font-family:mono=
space"><u style=3D"font-family:monospace"></u><u style=3D"font-family:monos=
pace"></u></span></pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0=C2=A0 identifies a candidate path.</span><span style=3D"=
font-family:monospace"><u style=3D"font-family:monospace"></u><u style=3D"f=
ont-family:monospace"></u></span></pre>
<pre style=3D"break-before:page;font-family:monospace"><span style=3D"font-=
family:monospace;color:black">=C2=A0</span><span style=3D"font-family:monos=
pace"><u style=3D"font-family:monospace"></u><u style=3D"font-family:monosp=
ace"></u></span></pre>
<pre style=3D"break-before:page;font-family:monospace"><span style=3D"font-=
family:Arial,sans-serif;color:black">So the real originator is encoded in d=
iscriminator and here it just means the peer candidate=C2=A0path was </span=
><span style=3D"font-family:monospace"><u style=3D"font-family:monospace"><=
/u><u style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"break-before:page;font-family:monospace"><span style=3D"font-=
family:Arial,sans-serif;color:black">received from. And if you read on this=
 entire exercise only servers best path selection as described in section 2=
.9. </span><span style=3D"font-family:monospace"><u style=3D"font-family:mo=
nospace"></u><u style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"break-before:page;font-family:monospace"><span style=3D"font-=
family:monospace;color:black">=C2=A0</span><span style=3D"font-family:monos=
pace"><u style=3D"font-family:monospace"></u><u style=3D"font-family:monosp=
ace"></u></span></pre>
<pre style=3D"break-before:page;font-family:monospace"><span style=3D"font-=
family:monospace;color:black">.... the following order until only one valid=
 best path is selected:</span><span style=3D"font-family:monospace"><u styl=
e=3D"font-family:monospace"></u><u style=3D"font-family:monospace"></u></sp=
an></pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0</span><span style=3D"font-family:monospace"><u style=3D"=
font-family:monospace"></u><u style=3D"font-family:monospace"></u></span></=
pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0=C2=A0 1.=C2=A0 Higher value of Protocol-Origin is select=
ed.</span><span style=3D"font-family:monospace"><u style=3D"font-family:mon=
ospace"></u><u style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0</span><span style=3D"font-family:monospace"><u style=3D"=
font-family:monospace"></u><u style=3D"font-family:monospace"></u></span></=
pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0=C2=A0 2.=C2=A0 If specified by configuration, prefer the=
 existing installed</span><span style=3D"font-family:monospace"><u style=3D=
"font-family:monospace"></u><u style=3D"font-family:monospace"></u></span><=
/pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 path.</span><span style=3D=
"font-family:monospace"><u style=3D"font-family:monospace"></u><u style=3D"=
font-family:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0</span><span style=3D"font-family:monospace"><u style=3D"=
font-family:monospace"></u><u style=3D"font-family:monospace"></u></span></=
pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0=C2=A0 3.=C2=A0 Lower value of originator is selected.</s=
pan><span style=3D"font-family:monospace"><u style=3D"font-family:monospace=
"></u><u style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0</span><span style=3D"font-family:monospace"><u style=3D"=
font-family:monospace"></u><u style=3D"font-family:monospace"></u></span></=
pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0=C2=A0 4.=C2=A0 Finally, the higher value of discriminato=
r is selected.</span><span style=3D"font-family:monospace"><u style=3D"font=
-family:monospace"></u><u style=3D"font-family:monospace"></u></span></pre>
</div>
<div>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span>+<u></u><u></u></span></p>
</div>
<div>
<pre style=3D"break-before:page;font-family:monospace"><span style=3D"font-=
family:monospace;color:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The originator=
 allows an operator to have multiple redundant</span><span style=3D"font-fa=
mily:monospace"><u style=3D"font-family:monospace"></u><u style=3D"font-fam=
ily:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 controllers and still maintain a=
 deterministic behaviour over</span><span style=3D"font-family:monospace"><=
u style=3D"font-family:monospace"></u><u style=3D"font-family:monospace"></=
u></span></pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 which of them are preferred even=
 if they are providing the same</span><span style=3D"font-family:monospace"=
><u style=3D"font-family:monospace"></u><u style=3D"font-family:monospace">=
</u></span></pre>
<pre style=3D"font-family:monospace"><span style=3D"font-family:monospace;c=
olor:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 candidate paths for the same SR =
policies to the headend.</span><span style=3D"font-family:monospace"><u sty=
le=3D"font-family:monospace"></u><u style=3D"font-family:monospace"></u></s=
pan></pre>
</div>
<div>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span>Thx,<br>
R.<u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
</div>
</div>
</blockquote>
</div>
<div>
<blockquote style=3D"border-style:none none none solid;border-left-width:1p=
t;padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm;border-left-co=
lor:rgb(204,204,204)">
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span>On Thu, Apr 30, 2020 at 10:46 AM Ketan Talauli=
kar (ketant) &lt;ketant=3D<a href=3D"mailto:40cisco.com@dmarc.ietf.org" tar=
get=3D"_blank">40cisco.com@dmarc.ietf.org</a>&gt;
 wrote:<u></u><u></u></span></p>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<div>
<blockquote style=3D"border-style:none none none solid;border-left-width:1p=
t;padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm;border-left-co=
lor:rgb(204,204,204)">
<div>
<div>
<div>
<blockquote style=3D"border-style:none none none solid;border-left-width:1p=
t;padding:0cm 0cm 0cm 6pt;margin:5pt 0cm 5pt 4.8pt;border-left-color:rgb(20=
4,204,204)">
<div>
<div>
<p class=3D"MsoNormal"><span>Hi Cheng,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>I assume you are recommending the use of Route=
 Origin Extended Community (<a href=3D"https://tools.ietf.org/html/rfc4360#=
section-5" target=3D"_blank">https://tools.ietf.org/html/rfc4360#section-5<=
/a>)
 for conveying the <span lang=3D"ZH-CN">=E2=80=9C</span>Originator<span lan=
g=3D"ZH-CN">=E2=80=9D</span> when the SR Policy update is propagated over e=
BGP sessions via other eBGP/iBGP sessions instead of direct peering with th=
e headend.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>I believe it does address the scenario you des=
cribe given that it is expected that SR Policy propagation via BGP is happe=
ning within a single
 administrative domain even if it comprises of multiple ASes.<u></u><u></u>=
</span></p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>Also copying the IDR WG for inputs since this =
would likely need to be updated in draft-ietf-idr-segment-routing-te-policy=
.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>Thanks,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>Ketan<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<div>
<div style=3D"border-style:solid none none;border-top-width:1pt;padding:3pt=
 0cm 0cm;border-top-color:rgb(225,225,225)">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> spring &lt;<a href=3D"mailto:spring-bounces@ietf.org" target=3D=
"_blank">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Chengli (Cheng Li)<br>
<b>Sent:</b> 30 April 2020 07:34<br>
<b>To:</b> <a href=3D"mailto:draft-ietf-spring-segment-routing-policy@ietf.=
org" target=3D"_blank">
draft-ietf-spring-segment-routing-policy@ietf.org</a><br>
<b>Cc:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;; huruizhao &lt;<a href=3D"mailto:huruizhao@huawe=
i.com" target=3D"_blank">huruizhao@huawei.com</a>&gt;; Fangsheng &lt;<a hre=
f=3D"mailto:fangsheng@huawei.com" target=3D"_blank">fangsheng@huawei.com</a=
>&gt;<br>
<b>Subject:</b> [spring] Comments: Route Origin Community in SR Policy(draf=
t-ietf-spring-segment-routing-policy)</span><span><u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
Hi authors,</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
=C2=A0</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
In section 2.4 of [draft-ietf-spring-segment-routing-policy-06], introduced=
 how the node-address of &quot;Originator
 of CP(Candidate Path)&quot; is generated when the Protocol-Origin is BGP. =
It says:</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
=C2=A0 =C2=A0
</span><span lang=3D"ZH-CN" style=3D"color:rgb(31,73,125)">=E2=80=9C</span>=
<span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">Protocol-Origin is BGP =
SR Policy, it is provided by the BGP component on the headend and is:</span=
><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 the BGP Router ID and ASN of the node/cont=
roller signalling the candidate path when it has a BGP session
 to the headend, OR</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 the BGP Router ID of the eBGP peer signall=
ing the candidate path=C2=A0 along with ASN of origin when the signalling
 is done via one or=C2=A0 more intermediate eBGP routers, OR</span><span><u=
></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 the BGP Originator ID [RFC4456] and the AS=
N of the node/controller=C2=A0 when the signalling is done via one
 or more route-reflectors over=C2=A0 iBGP session.</span><span lang=3D"ZH-C=
N" style=3D"color:rgb(31,73,125)">=E2=80=9D</span><span><u></u><u></u></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
=C2=A0=C2=A0
</span><span><u></u><u></u></span></p>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
<div>
<blockquote style=3D"border-style:none none none solid;border-left-width:1p=
t;padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm;border-left-co=
lor:rgb(204,204,204)">
<div>
<div>
<div>
<blockquote style=3D"border-style:none none none solid;border-left-width:1p=
t;padding:0cm 0cm 0cm 6pt;margin:5pt 0cm 5pt 4.8pt;border-left-color:rgb(20=
4,204,204)">
<div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
In the operator&#39;s network, in order to reduce the number of=C2=A0 BGP s=
essions in controller and achieve scalability,
 the controller only establishes eBGP peer with the RR. And the RR establis=
hes iBGP peers with the headends.. As mentioned in the draft, the headend w=
ill use the RR&#39;s Router ID as the CP&#39;s node-address (the signaling =
is done via route transmission from RR to
 the headend instead of route reflection).=C2=A0 The headend needs to carry=
 the CP&#39;s key when reporting the SR Policy status to the controller thr=
ough BGP-LS. And there is a problem that the controller may not recognize t=
he key because the node-address is generated
 by the RR node.</span><span><u></u><u></u></span></p>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
<div>
<blockquote style=3D"border-style:none none none solid;border-left-width:1p=
t;padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm;border-left-co=
lor:rgb(204,204,204)">
<div>
<div>
<div>
<blockquote style=3D"border-style:none none none solid;border-left-width:1p=
t;padding:0cm 0cm 0cm 6pt;margin:5pt 0cm 5pt 4.8pt;border-left-color:rgb(20=
4,204,204)">
<div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
=C2=A0</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
For network robustness, two or more RRs are usually deployed. This will int=
roduce another problem.. When the
 same CP advertised by the controller is delivered to the headend through d=
ifferent RRs, the headend cannot distinguish whether it is the same CP beca=
use the node-address in the CPs&#39; key=C2=A0 comes from different RRs.
</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
=C2=A0</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
To solve these problems,=C2=A0 We recommend carrying the Route Origin Commu=
nity (defined in RFC 4360) directly when
 the controller advertises BGP routes.=C2=A0 In this way, the key=C2=A0 of =
the CP is determined by the controller and will not change during the adver=
tisement of BGP routes.</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span><span><u></u><u></=
u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
Thanks,</span><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
Cheng</span><span><u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span>______________________________________________=
_<br>
Idr mailing list<br>
<a href=3D"mailto:Idr@ietf.org" target=3D"_blank">Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/idr</a><u></u><u></u></span></p>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
<p class=3D"MsoNormal">_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" target=3D"_blank">=
https://www.ietf.org/mailman/listinfo/spring</a><u></u><u></u></p>
</blockquote>
</div>
</div>
<p class=3D"MsoNormal">-- <u></u><u></u></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<p><span style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com/" =
target=3D"_blank"><span style=3D"text-decoration:none;color:rgb(17,85,204)"=
><img border=3D"0" width=3D"81" height=3D"18" style=3D"width: 0.8416in; hei=
ght: 0.1916in;" id=3D"m_5722347963350161467_x0000_i1026" src=3D"http://ss7.=
vzw.com/is/image/VerizonWireless/vz-logo-email"></span></a><u></u><u></u></=
span></p><a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+=
%0D%0A+Silver+Spring,+MD?entry=3Dgmail&amp;source=3Dg">
</a><p style=3D"margin:0cm 0cm 0.0001pt"><b><span style=3D"font-family:Aria=
l,sans-serif;color:black">Gyan Mishra</span></b><span style=3D"font-family:=
Arial,sans-serif;color:black"><u style=3D"font-family:Arial,sans-serif"></u=
><u style=3D"font-family:Arial,sans-serif"></u></span></p>
<p style=3D"margin:0cm 0cm 0.0001pt"><i><span style=3D"font-family:Georgia,=
serif;color:black">Network Solutions Architect=C2=A0</span></i><span style=
=3D"color:rgb(34,34,34)"><u></u><u></u></span></p>
<p style=3D"margin:0cm 0cm 0.0001pt"><i><span style=3D"font-family:Georgia,=
serif;color:black">M 301 502-1347<br>
<a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Si=
lver+Spring,+MD?entry=3Dgmail&amp;source=3Dg" style=3D"font-family:Georgia,=
serif">13101 Columbia Pike</a>=C2=A0<br>
</span></i><span style=3D"color:black"><a href=3D"https://www.google.com/ma=
ps/search/13101+Columbia+Pike+%0D%0A+Silver+Spring,+MD?entry=3Dgmail&amp;so=
urce=3Dg">Silver Spring, MD</a><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>

</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"l=
tr"><div><p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com=
/" style=3D"color:rgb(17,85,204);padding-bottom:1em;display:inline-block" t=
arget=3D"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz=
-logo-email" width=3D"81" height=3D"18" style=3D"height:18px;width:81px"></=
a><br></p><p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NH=
G DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b=
></p><p style=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font fac=
e=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutio=
ns A</i></font><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=
=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px;line-height:13px;=
color:black"><i><font face=3D"georgia, serif">M 301 502-1347<br>13101 Colum=
bia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div></di=
v></div></div></div></div></div></div></div>

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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Mon, 1 Jun 2020 09:47:18 -0400
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To: "Chengli (Cheng Li)" <c.l@huawei.com>
Cc: Fangsheng <fangsheng@huawei.com>, "Ketan Talaulikar (ketant)" <ketant@cisco.com>,  Robert Raszuk <robert@raszuk.net>, SPRING WG <spring@ietf.org>,  "draft-ietf-spring-segment-routing-policy@ietf.org" <draft-ietf-spring-segment-routing-policy@ietf.org>, idr wg <idr@ietf.org>,  stefano previdi <stefano@previdi.net>
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Subject: Re: [spring] [Idr] Comments: Route Origin Community in SR Policy(draft-ietf-spring-segment-routing-policy)
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Ketan

Thanks for sharing this draft.

This draft below is the SR-TE policy itself but the piece I was missing was
the BGP interaction between SR-TE and new SAFI to advertise SR-TE policy
into BGP which is the critical component of the per VRF coloring schema to
steer L3 vpn traffic.

https://datatracker.ietf.org/doc/html/draft-ietf-spring-segment-routing-pol=
icy-07


On Mon, Jun 1, 2020 at 3:25 AM Chengli (Cheng Li) <c.l@huawei.com> wrote:

> Hi Ketan,
>
>
>
> Sorry for my delay, I saw the update, and it has addressed my comments,
> many thanks.
>
>
>
> Best,
> Cheng
>
>
>
>
>
> *From:* Ketan Talaulikar (ketant) [mailto:ketant@cisco.com]
> *Sent:* Monday, May 18, 2020 8:00 PM
> *To:* Robert Raszuk <robert@raszuk.net>
> *Cc:* Chengli (Cheng Li) <c.l@huawei.com>;
> draft-ietf-spring-segment-routing-policy@ietf.org; idr wg <idr@ietf.org>;
> SPRING WG <spring@ietf.org>; Fangsheng <fangsheng@huawei.com>; stefano
> previdi <stefano@previdi.net>
> *Subject:* RE: [Idr] Comments: Route Origin Community in SR
> Policy(draft-ietf-spring-segment-routing-policy)
>
>
>
> Hi Robert,
>
>
>
> You are right that the =E2=80=9COriginator=E2=80=9D is not used in BGP be=
st path and is
> just for a tie-breaking logic in SRTE between paths from different
> protocols and controllers. I doubt if there is a functional issue here.
>
>
>
> I thought that Chengli was bringing in some new/different requirement for
> the =E2=80=9COriginator=E2=80=9D field for some deployment design. I have=
n=E2=80=99t seen a
> response/clarification from him as yet, and so perhaps I misunderstood hi=
m
> in which case we are ok here.
>
>
>
> Thanks,
>
> Ketan
>
>
>
> *From:* Robert Raszuk <robert@raszuk.net>
> *Sent:* 30 April 2020 14:46
> *To:* Ketan Talaulikar (ketant) <ketant@cisco.com>
> *Cc:* Chengli (Cheng Li) <chengli13@huawei.com>;
> draft-ietf-spring-segment-routing-policy@ietf.org; idr wg <idr@ietf.org>;
> SPRING WG <spring@ietf.org>; Fangsheng <fangsheng@huawei.com>; stefano
> previdi <stefano@previdi.net>
> *Subject:* Re: [Idr] Comments: Route Origin Community in SR
> Policy(draft-ietf-spring-segment-routing-policy)
>
>
>
> Hi Chengli and Ketan,
>
>
>
> Well I think (perhaps to your surprise) the current text is actually
> correct.
>
>
>
> See the overall idea of section 2.4 is not to define the real source of
> the candidate path. That is done in section 2.5 The idea here is to keep
> multiple *paths or versions* of the candidate paths in the local system
> uniquely.
>
>
>
> See if you continue reading section 2.6 demystifies the real objective:
>
>
>
>    The tuple <Protocol-Origin, originator, discriminator> uniquely
>
>    identifies a candidate path.
>
>
>
> So the real originator is encoded in discriminator and here it just means=
 the peer candidate path was
>
> received from. And if you read on this entire exercise only servers best =
path selection as described in section 2.9.
>
>
>
> .... the following order until only one valid best path is selected:
>
>
>
>    1.  Higher value of Protocol-Origin is selected.
>
>
>
>    2.  If specified by configuration, prefer the existing installed
>
>        path.
>
>
>
>    3.  Lower value of originator is selected.
>
>
>
>    4.  Finally, the higher value of discriminator is selected.
>
>
>
> +
>
>       The originator allows an operator to have multiple redundant
>
>       controllers and still maintain a deterministic behaviour over
>
>       which of them are preferred even if they are providing the same
>
>       candidate paths for the same SR policies to the headend.
>
>
>
> Thx,
> R.
>
>
>
> On Thu, Apr 30, 2020 at 10:46 AM Ketan Talaulikar (ketant) <ketant=3D
> 40cisco.com@dmarc.ietf.org> wrote:
>
> Hi Cheng,
>
>
>
> I assume you are recommending the use of Route Origin Extended Community =
(
> https://tools.ietf.org/html/rfc4360#section-5) for conveying the
> =E2=80=9COriginator=E2=80=9D when the SR Policy update is propagated over=
 eBGP sessions via
> other eBGP/iBGP sessions instead of direct peering with the headend.
>
>
>
> I believe it does address the scenario you describe given that it is
> expected that SR Policy propagation via BGP is happening within a single
> administrative domain even if it comprises of multiple ASes.
>
>
>
> Also copying the IDR WG for inputs since this would likely need to be
> updated in draft-ietf-idr-segment-routing-te-policy.
>
>
>
> Thanks,
>
> Ketan
>
>
>
> *From:* spring <spring-bounces@ietf.org> *On Behalf Of *Chengli (Cheng Li=
)
> *Sent:* 30 April 2020 07:34
> *To:* draft-ietf-spring-segment-routing-policy@ietf.org
> *Cc:* SPRING WG <spring@ietf.org>; huruizhao <huruizhao@huawei.com>;
> Fangsheng <fangsheng@huawei.com>
> *Subject:* [spring] Comments: Route Origin Community in SR
> Policy(draft-ietf-spring-segment-routing-policy)
>
>
>
> Hi authors,
>
>
>
> In section 2.4 of [draft-ietf-spring-segment-routing-policy-06],
> introduced how the node-address of "Originator of CP(Candidate Path)" is
> generated when the Protocol-Origin is BGP. It says:
>
>     =E2=80=9CProtocol-Origin is BGP SR Policy, it is provided by the BGP =
component
> on the headend and is:
>
>      o  the BGP Router ID and ASN of the node/controller signalling the
> candidate path when it has a BGP session to the headend, OR
>
>      o  the BGP Router ID of the eBGP peer signalling the candidate path
> along with ASN of origin when the signalling is done via one or  more
> intermediate eBGP routers, OR
>
>      o  the BGP Originator ID [RFC4456] and the ASN of the
> node/controller  when the signalling is done via one or more
> route-reflectors over  iBGP session.=E2=80=9D
>
>
>
> In the operator's network, in order to reduce the number of  BGP sessions
> in controller and achieve scalability, the controller only establishes eB=
GP
> peer with the RR. And the RR establishes iBGP peers with the headends. As
> mentioned in the draft, the headend will use the RR's Router ID as the CP=
's
> node-address (the signaling is done via route transmission from RR to the
> headend instead of route reflection).  The headend needs to carry the CP'=
s
> key when reporting the SR Policy status to the controller through BGP-LS.
> And there is a problem that the controller may not recognize the key
> because the node-address is generated by the RR node.
>
>
>
> For network robustness, two or more RRs are usually deployed. This will
> introduce another problem.. When the same CP advertised by the controller
> is delivered to the headend through different RRs, the headend cannot
> distinguish whether it is the same CP because the node-address in the CPs=
'
> key  comes from different RRs.
>
>
>
> To solve these problems,  We recommend carrying the Route Origin Communit=
y
> (defined in RFC 4360) directly when the controller advertises BGP routes.
> In this way, the key  of the CP is determined by the controller and will
> not change during the advertisement of BGP routes.
>
>
>
> Thanks,
>
> Cheng
>
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
--=20

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--00000000000030db9605a70609fb
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div><br></div><div><div dir=3D"auto">Ketan</div><div dir=3D"auto"><br></di=
v><div dir=3D"auto">Thanks for sharing this draft. =C2=A0</div><div dir=3D"=
auto"><br></div><div dir=3D"auto">This draft below is the SR-TE policy itse=
lf but the piece I was missing was the BGP interaction between SR-TE and ne=
w SAFI to advertise SR-TE policy into BGP which is the critical component o=
f the per VRF coloring schema to steer L3 vpn traffic.</div><div dir=3D"aut=
o"><br></div><div dir=3D"auto"><div><a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ietf-spring-segment-routing-policy-07">https://datatracker.=
ietf.org/doc/html/draft-ietf-spring-segment-routing-policy-07</a></div><br>=
</div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">=
On Mon, Jun 1, 2020 at 3:25 AM Chengli (Cheng Li) &lt;<a href=3D"mailto:c.l=
@huawei.com">c.l@huawei.com</a>&gt; wrote:<br></div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-l=
eft-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">





<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"m_-53849345505862534WordSection1">
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">Hi Ketan,<u></u=
><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)"><u></u>=C2=A0<u=
></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">Sorry for my de=
lay, I saw the update, and it has addressed my comments, many thanks.<u></u=
><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)"><u></u>=C2=A0<u=
></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">Best,<br>
Cheng<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)"><u></u>=C2=A0<u=
></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)"><u></u>=C2=A0<u=
></u></span></p>
<div>
<div style=3D"border-style:solid none none;border-top-width:1pt;padding:3pt=
 0cm 0cm;border-top-color:rgb(225,225,225)">
<p class=3D"MsoNormal"></p></div></div></div></div><div lang=3D"EN-US" link=
=3D"blue" vlink=3D"purple"><div class=3D"m_-53849345505862534WordSection1">=
<div><div style=3D"border-style:solid none none;border-top-width:1pt;paddin=
g:3pt 0cm 0cm;border-top-color:rgb(225,225,225)"><p class=3D"MsoNormal"><b>=
From:</b> Ketan Talaulikar (ketant) [mailto:<a href=3D"mailto:ketant@cisco.=
com" target=3D"_blank">ketant@cisco.com</a>]
<br>
<b>Sent:</b> Monday, May 18, 2020 8:00 PM<br>
<b>To:</b> Robert Raszuk &lt;<a href=3D"mailto:robert@raszuk.net" target=3D=
"_blank">robert@raszuk.net</a>&gt;<br>
<b>Cc:</b> Chengli (Cheng Li) &lt;<a href=3D"mailto:c.l@huawei.com" target=
=3D"_blank">c.l@huawei.com</a>&gt;; <a href=3D"mailto:draft-ietf-spring-seg=
ment-routing-policy@ietf.org" target=3D"_blank">draft-ietf-spring-segment-r=
outing-policy@ietf.org</a>; idr wg &lt;<a href=3D"mailto:idr@ietf.org" targ=
et=3D"_blank">idr@ietf.org</a>&gt;; SPRING WG &lt;<a href=3D"mailto:spring@=
ietf.org" target=3D"_blank">spring@ietf.org</a>&gt;; Fangsheng &lt;<a href=
=3D"mailto:fangsheng@huawei.com" target=3D"_blank">fangsheng@huawei.com</a>=
&gt;; stefano previdi &lt;<a href=3D"mailto:stefano@previdi.net" target=3D"=
_blank">stefano@previdi.net</a>&gt;<br>
<b>Subject:</b> RE: [Idr] Comments: Route Origin Community in SR Policy(dra=
ft-ietf-spring-segment-routing-policy)<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Hi Robert,<u></u><u></u></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">You are right that the =E2=80=
=9COriginator=E2=80=9D is not used in BGP best path and is just for a tie-b=
reaking logic in SRTE between paths from different protocols and controller=
s. I doubt if there
 is a functional issue here.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">I thought that Chengli was brin=
ging in some new/different requirement for the =E2=80=9COriginator=E2=80=9D=
 field for some deployment design. I haven=E2=80=99t seen a response/clarif=
ication from him as yet,
 and so perhaps I misunderstood him in which case we are ok here.<u></u><u>=
</u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Thanks,<u></u><u></u></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Ketan<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><b>From:</b> Robert Raszuk &lt;<a href=3D"mailto:rob=
ert@raszuk.net" target=3D"_blank">robert@raszuk.net</a>&gt;
<br>
<b>Sent:</b> 30 April 2020 14:46<br>
<b>To:</b> Ketan Talaulikar (ketant) &lt;<a href=3D"mailto:ketant@cisco.com=
" target=3D"_blank">ketant@cisco.com</a>&gt;<br>
<b>Cc:</b> Chengli (Cheng Li) &lt;<a href=3D"mailto:chengli13@huawei.com" t=
arget=3D"_blank">chengli13@huawei.com</a>&gt;;
<a href=3D"mailto:draft-ietf-spring-segment-routing-policy@ietf.org" target=
=3D"_blank">draft-ietf-spring-segment-routing-policy@ietf.org</a>; idr wg &=
lt;<a href=3D"mailto:idr@ietf.org" target=3D"_blank">idr@ietf.org</a>&gt;; =
SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@i=
etf.org</a>&gt;; Fangsheng &lt;<a href=3D"mailto:fangsheng@huawei.com" targ=
et=3D"_blank">fangsheng@huawei.com</a>&gt;;
 stefano previdi &lt;<a href=3D"mailto:stefano@previdi.net" target=3D"_blan=
k">stefano@previdi.net</a>&gt;<br>
<b>Subject:</b> Re: [Idr] Comments: Route Origin Community in SR Policy(dra=
ft-ietf-spring-segment-routing-policy)<u></u><u></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=C2=A0<u></u></span></p>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Hi Chengli and Ketan,<u></u><u>=
</u></span></p>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Well I think (perhaps to your s=
urprise) the current text is actually correct.=C2=A0<u></u><u></u></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">See the overall idea of section=
 2.4 is not to define the real source of the candidate path. That is done i=
n section 2.5 The idea here is to keep multiple *paths or versions* of the =
candidate paths in the local system
 uniquely.=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">See if you continue reading sec=
tion 2.6 demystifies the real objective:=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<pre style=3D"break-before:page;font-family:monospace"><span lang=3D"EN-IN"=
 style=3D"font-family:monospace;color:black">=C2=A0=C2=A0 The tuple &lt;Pro=
tocol-Origin, originator, discriminator&gt; uniquely<u style=3D"font-family=
:monospace"></u><u style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black">=C2=A0=C2=A0 identifies a candidate path.<u styl=
e=3D"font-family:monospace"></u><u style=3D"font-family:monospace"></u></sp=
an></pre>
<pre style=3D"break-before:page;font-family:monospace"><span lang=3D"EN-IN"=
 style=3D"font-family:monospace;color:black"><u style=3D"font-family:monosp=
ace"></u>=C2=A0<u style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"break-before:page;font-family:monospace"><span lang=3D"EN-IN"=
 style=3D"font-family:Arial,sans-serif;color:black">So the real originator =
is encoded in discriminator and here it just means the peer candidate=C2=A0=
path was </span><span lang=3D"EN-IN" style=3D"font-family:monospace;color:b=
lack"><u style=3D"font-family:monospace"></u><u style=3D"font-family:monosp=
ace"></u></span></pre>
<pre style=3D"break-before:page;font-family:monospace"><span lang=3D"EN-IN"=
 style=3D"font-family:Arial,sans-serif;color:black">received from. And if y=
ou read on this entire exercise only servers best path selection as describ=
ed in section 2.9. </span><span lang=3D"EN-IN" style=3D"font-family:monospa=
ce;color:black"><u style=3D"font-family:monospace"></u><u style=3D"font-fam=
ily:monospace"></u></span></pre>
<pre style=3D"break-before:page;font-family:monospace"><span lang=3D"EN-IN"=
 style=3D"font-family:monospace;color:black"><u style=3D"font-family:monosp=
ace"></u>=C2=A0<u style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"break-before:page;font-family:monospace"><span lang=3D"EN-IN"=
 style=3D"font-family:monospace;color:black">.... the following order until=
 only one valid best path is selected:<u style=3D"font-family:monospace"></=
u><u style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black"><u style=3D"font-family:monospace"></u>=C2=A0<u =
style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black">=C2=A0=C2=A0 1.=C2=A0 Higher value of Protocol-O=
rigin is selected.<u style=3D"font-family:monospace"></u><u style=3D"font-f=
amily:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black"><u style=3D"font-family:monospace"></u>=C2=A0<u =
style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black">=C2=A0=C2=A0 2.=C2=A0 If specified by configurat=
ion, prefer the existing installed<u style=3D"font-family:monospace"></u><u=
 style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 path.<u sty=
le=3D"font-family:monospace"></u><u style=3D"font-family:monospace"></u></s=
pan></pre>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black"><u style=3D"font-family:monospace"></u>=C2=A0<u =
style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black">=C2=A0=C2=A0 3.=C2=A0 Lower value of originator =
is selected.<u style=3D"font-family:monospace"></u><u style=3D"font-family:=
monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black"><u style=3D"font-family:monospace"></u>=C2=A0<u =
style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black">=C2=A0=C2=A0 4.=C2=A0 Finally, the higher value =
of discriminator is selected.<u style=3D"font-family:monospace"></u><u styl=
e=3D"font-family:monospace"></u></span></pre>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">+<u></u><u></u></span></p>
</div>
<div>
<pre style=3D"break-before:page;font-family:monospace"><span lang=3D"EN-IN"=
 style=3D"font-family:monospace;color:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
 The originator allows an operator to have multiple redundant<u style=3D"fo=
nt-family:monospace"></u><u style=3D"font-family:monospace"></u></span></pr=
e>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 controllers and s=
till maintain a deterministic behaviour over<u style=3D"font-family:monospa=
ce"></u><u style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 which of them are=
 preferred even if they are providing the same<u style=3D"font-family:monos=
pace"></u><u style=3D"font-family:monospace"></u></span></pre>
<pre style=3D"font-family:monospace"><span lang=3D"EN-IN" style=3D"font-fam=
ily:monospace;color:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 candidate paths f=
or the same SR policies to the headend.<u style=3D"font-family:monospace"><=
/u><u style=3D"font-family:monospace"></u></span></pre>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Thx,<br>
R.<u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=C2=A0<u></u></span></p>
<div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">On Thu, Apr 30, 2020 at 10:46 A=
M Ketan Talaulikar (ketant) &lt;ketant=3D</span><a href=3D"mailto:40cisco.c=
om@dmarc.ietf.org" target=3D"_blank"><span lang=3D"EN-IN">40cisco.com@dmarc=
.ietf.org</span></a><span lang=3D"EN-IN">&gt; wrote:<u></u><u></u></span></=
p>
</div>
<blockquote style=3D"border-style:none none none solid;border-left-width:1p=
t;padding:0cm 0cm 0cm 6pt;margin:5pt 0cm 5pt 4.8pt;border-left-color:rgb(20=
4,204,204)">
<div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Hi Cheng,<u></u><u></u></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">I assume you are recommending t=
he use of Route Origin Extended Community (</span><a href=3D"https://tools.=
ietf.org/html/rfc4360#section-5" target=3D"_blank"><span lang=3D"EN-IN">htt=
ps://tools.ietf.org/html/rfc4360#section-5</span></a><span lang=3D"EN-IN">)
 for conveying the =E2=80=9COriginator=E2=80=9D when the SR Policy update i=
s propagated over eBGP sessions via other eBGP/iBGP sessions instead of dir=
ect peering with the headend.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">I believe it does address the s=
cenario you describe given that it is expected that SR Policy propagation v=
ia BGP is happening within a single administrative domain
 even if it comprises of multiple ASes.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Also copying the IDR WG for inp=
uts since this would likely need to be updated in draft-ietf-idr-segment-ro=
uting-te-policy.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Thanks,<u></u><u></u></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Ketan<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">=C2=A0<u></u><u></u></span></p>
<div>
<div style=3D"border-style:solid none none;border-top-width:1pt;padding:3pt=
 0cm 0cm;border-top-color:rgb(225,225,225)">
<p class=3D"MsoNormal"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bou=
nces@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Chengli (Cheng Li)<br>
<b>Sent:</b> 30 April 2020 07:34<br>
<b>To:</b> <a href=3D"mailto:draft-ietf-spring-segment-routing-policy@ietf.=
org" target=3D"_blank">
draft-ietf-spring-segment-routing-policy@ietf.org</a><br>
<b>Cc:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;; huruizhao &lt;<a href=3D"mailto:huruizhao@huawe=
i.com" target=3D"_blank">huruizhao@huawei.com</a>&gt;; Fangsheng &lt;<a hre=
f=3D"mailto:fangsheng@huawei.com" target=3D"_blank">fangsheng@huawei.com</a=
>&gt;<br>
<b>Subject:</b> [spring] Comments: Route Origin Community in SR Policy(draf=
t-ietf-spring-segment-routing-policy)<span lang=3D"EN-IN"><u></u><u></u></s=
pan></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">Hi authors,</sp=
an><span lang=3D"EN-IN"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">=C2=A0</span><s=
pan lang=3D"EN-IN"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">In section 2.4 =
of [draft-ietf-spring-segment-routing-policy-06], introduced how the node-a=
ddress of &quot;Originator of CP(Candidate Path)&quot; is generated when
 the Protocol-Origin is BGP. It says:</span><span lang=3D"EN-IN"><u></u><u>=
</u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">=C2=A0 =C2=A0 =
=E2=80=9CProtocol-Origin is BGP SR Policy, it is provided by the BGP compon=
ent on the headend and is:</span><span lang=3D"EN-IN"><u></u><u></u></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">=C2=A0=C2=A0=C2=
=A0=C2=A0 o=C2=A0 the BGP Router ID and ASN of the node/controller signalli=
ng the candidate path when it has a BGP session to the headend, OR</span><s=
pan lang=3D"EN-IN"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">=C2=A0=C2=A0=C2=
=A0=C2=A0 o=C2=A0 the BGP Router ID of the eBGP peer signalling the candida=
te path=C2=A0 along with ASN of origin when the signalling is done via one =
or=C2=A0 more intermediate
 eBGP routers, OR</span><span lang=3D"EN-IN"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">=C2=A0=C2=A0=C2=
=A0=C2=A0 o=C2=A0 the BGP Originator ID [RFC4456] and the ASN of the node/c=
ontroller=C2=A0 when the signalling is done via one or more route-reflector=
s over=C2=A0 iBGP session.=E2=80=9D</span><span lang=3D"EN-IN"><u></u><u></=
u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">=C2=A0=C2=A0
</span><span lang=3D"EN-IN"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">In the operator=
&#39;s network, in order to reduce the number of=C2=A0 BGP sessions in cont=
roller and achieve scalability, the controller only establishes eBGP
 peer with the RR. And the RR establishes iBGP peers with the headends. As =
mentioned in the draft, the headend will use the RR&#39;s Router ID as the =
CP&#39;s node-address (the signaling is done via route transmission from RR=
 to the headend instead of route reflection).=C2=A0
 The headend needs to carry the CP&#39;s key when reporting the SR Policy s=
tatus to the controller through BGP-LS. And there is a problem that the con=
troller may not recognize the key because the node-address is generated by =
the RR node.</span><span lang=3D"EN-IN"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">=C2=A0</span><s=
pan lang=3D"EN-IN"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">For network rob=
ustness, two or more RRs are usually deployed. This will introduce another =
problem.. When the same CP advertised by the controller is
 delivered to the headend through different RRs, the headend cannot disting=
uish whether it is the same CP because the node-address in the CPs&#39; key=
=C2=A0 comes from different RRs.
</span><span lang=3D"EN-IN"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">=C2=A0</span><s=
pan lang=3D"EN-IN"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">To solve these =
problems,=C2=A0 We recommend carrying the Route Origin Community (defined i=
n RFC 4360) directly when the controller advertises BGP routes.=C2=A0
 In this way, the key=C2=A0 of the CP is determined by the controller and w=
ill not change during the advertisement of BGP routes.</span><span lang=3D"=
EN-IN"><u></u><u></u></span></p>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-IN"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">Thanks,</span><=
span lang=3D"EN-IN"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125)">Cheng</span><sp=
an lang=3D"EN-IN"><u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">_______________________________=
________________<br>
Idr mailing list<br>
</span><a href=3D"mailto:Idr@ietf.org" target=3D"_blank"><span lang=3D"EN-I=
N">Idr@ietf.org</span></a><span lang=3D"EN-IN"><br>
</span><a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_bla=
nk"><span lang=3D"EN-IN">https://www.ietf.org/mailman/listinfo/idr</span></=
a><span lang=3D"EN-IN"><u></u><u></u></span></p>
</blockquote>
</div>
</div>
</div>

_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/listinfo/spring</a><br>
</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"l=
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a><br></p><p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NH=
G DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b=
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e=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutio=
ns A</i></font><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=
=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px;line-height:13px;=
color:black"><i><font face=3D"georgia, serif">M 301 502-1347<br>13101 Colum=
bia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div></di=
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From: "Ketan Talaulikar (ketant)" <ketant@cisco.com>
To: Gyan Mishra <hayabusagsm@gmail.com>
CC: "Chengli (Cheng Li)" <c.l@huawei.com>, Fangsheng <fangsheng@huawei.com>, Robert Raszuk <robert@raszuk.net>, SPRING WG <spring@ietf.org>, Yangang <yangang@huawei.com>, "draft-ietf-spring-segment-routing-policy@ietf.org" <draft-ietf-spring-segment-routing-policy@ietf.org>, idr wg <idr@ietf.org>, stefano previdi <stefano@previdi.net>
Thread-Topic: [spring] [Idr] Comments: Route Origin Community in SR Policy(draft-ietf-spring-segment-routing-policy)
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From: "Ketan Talaulikar (ketant)" <ketant@cisco.com>
To: Gyan Mishra <hayabusagsm@gmail.com>, "Chengli (Cheng Li)" <c.l@huawei.com>
CC: Fangsheng <fangsheng@huawei.com>, Robert Raszuk <robert@raszuk.net>, SPRING WG <spring@ietf.org>, "draft-ietf-spring-segment-routing-policy@ietf.org" <draft-ietf-spring-segment-routing-policy@ietf.org>, idr wg <idr@ietf.org>, stefano previdi <stefano@previdi.net>
Thread-Topic: [spring] [Idr] Comments: Route Origin Community in SR Policy(draft-ietf-spring-segment-routing-policy)
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Subject: Re: [spring] [Idr] Comments: Route Origin Community in SR Policy(draft-ietf-spring-segment-routing-policy)
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From nobody Mon Jun  1 10:01:53 2020
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Subject: [spring] I-D Action: draft-voyer-spring-sr-replication-segment-03.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Source Packet Routing in Networking WG of the IETF.

        Title           : SR Replication Segment for Multi-point Service Delivery
        Authors         : Daniel Voyer
                          Clarence Filsfils
                          Rishabh Parekh
                          Hooman Bidgoli
                          Zhaohui Zhang
	Filename        : draft-voyer-spring-sr-replication-segment-03.txt
	Pages           : 8
	Date            : 2020-06-01

Abstract:
   This document describes the SR Replication segment for Multi-point
   service delivery.  A SR Replication segment allows a packet to be
   replicated from a replication node to downstream nodes.



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-voyer-spring-sr-replication-segment/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment-03
https://datatracker.ietf.org/doc/html/draft-voyer-spring-sr-replication-segment-03

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-voyer-spring-sr-replication-segment-03


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/



From nobody Mon Jun  1 14:28:40 2020
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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Mon, 1 Jun 2020 17:28:18 -0400
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To: "Ketan Talaulikar (ketant)" <ketant@cisco.com>
Cc: "Chengli (Cheng Li)" <c.l@huawei.com>, Fangsheng <fangsheng@huawei.com>,  Robert Raszuk <robert@raszuk.net>, SPRING WG <spring@ietf.org>,  "draft-ietf-spring-segment-routing-policy@ietf.org" <draft-ietf-spring-segment-routing-policy@ietf.org>, idr wg <idr@ietf.org>,  stefano previdi <stefano@previdi.net>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/ECTGHLrweUyqWcuUaGQc7-lyzYQ>
Subject: Re: [spring] [Idr] Comments: Route Origin Community in SR Policy(draft-ietf-spring-segment-routing-policy)
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--000000000000dc985d05a70c79cf
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Hi Ketan

Thank you for the response.  I believe that does answer the general
questions from a draft specification perspective.   I had not read all the
way through the draft so missed that section.  I do have some Cisco
specific SR-TE questions that I will ping you off list.

Kind regards

Gyan

On Mon, Jun 1, 2020 at 10:59 AM Ketan Talaulikar (ketant) <ketant@cisco.com=
>
wrote:

> Hi Gyan,
>
>
>
> Your question is a bit orthogonal to the thread and my apologies if I did
> not get it right.
>
>
>
> Could you please check whether the following section clarifies what you
> were looking for?
>
>
>
>
> https://datatracker.ietf.org/doc/html/draft-ietf-spring-segment-routing-p=
olicy-07#section-8.4
>
>
>
> The draft does not talk about the application of a specific Color Extende=
d
> Community attribute to all routes belonging to a specific VRF since that =
is
> more of a local policy or implementation matter.
>
>
>
> Thanks,
>
> Ketan
>
>
>
> *From:* Gyan Mishra <hayabusagsm@gmail.com>
> *Sent:* 01 June 2020 19:17
> *To:* Chengli (Cheng Li) <c.l@huawei.com>
> *Cc:* Fangsheng <fangsheng@huawei.com>; Ketan Talaulikar (ketant) <
> ketant@cisco.com>; Robert Raszuk <robert@raszuk.net>; SPRING WG <
> spring@ietf.org>; draft-ietf-spring-segment-routing-policy@ietf.org; idr
> wg <idr@ietf.org>; stefano previdi <stefano@previdi.net>
> *Subject:* Re: [spring] [Idr] Comments: Route Origin Community in SR
> Policy(draft-ietf-spring-segment-routing-policy)
>
>
>
>
>
> Ketan
>
>
>
> Thanks for sharing this draft.
>
>
>
> This draft below is the SR-TE policy itself but the piece I was missing
> was the BGP interaction between SR-TE and new SAFI to advertise SR-TE
> policy into BGP which is the critical component of the per VRF coloring
> schema to steer L3 vpn traffic.
>
>
>
>
> https://datatracker.ietf.org/doc/html/draft-ietf-spring-segment-routing-p=
olicy-07
>
>
>
>
>
> On Mon, Jun 1, 2020 at 3:25 AM Chengli (Cheng Li) <c.l@huawei.com> wrote:
>
> Hi Ketan,
>
>
>
> Sorry for my delay, I saw the update, and it has addressed my comments,
> many thanks.
>
>
>
> Best,
> Cheng
>
>
>
>
>
> *From:* Ketan Talaulikar (ketant) [mailto:ketant@cisco.com]
> *Sent:* Monday, May 18, 2020 8:00 PM
> *To:* Robert Raszuk <robert@raszuk.net>
> *Cc:* Chengli (Cheng Li) <c.l@huawei.com>;
> draft-ietf-spring-segment-routing-policy@ietf.org; idr wg <idr@ietf.org>;
> SPRING WG <spring@ietf.org>; Fangsheng <fangsheng@huawei.com>; stefano
> previdi <stefano@previdi.net>
> *Subject:* RE: [Idr] Comments: Route Origin Community in SR
> Policy(draft-ietf-spring-segment-routing-policy)
>
>
>
> Hi Robert,
>
>
>
> You are right that the =E2=80=9COriginator=E2=80=9D is not used in BGP be=
st path and is
> just for a tie-breaking logic in SRTE between paths from different
> protocols and controllers. I doubt if there is a functional issue here.
>
>
>
> I thought that Chengli was bringing in some new/different requirement for
> the =E2=80=9COriginator=E2=80=9D field for some deployment design. I have=
n=E2=80=99t seen a
> response/clarification from him as yet, and so perhaps I misunderstood hi=
m
> in which case we are ok here.
>
>
>
> Thanks,
>
> Ketan
>
>
>
> *From:* Robert Raszuk <robert@raszuk.net>
> *Sent:* 30 April 2020 14:46
> *To:* Ketan Talaulikar (ketant) <ketant@cisco.com>
> *Cc:* Chengli (Cheng Li) <chengli13@huawei.com>;
> draft-ietf-spring-segment-routing-policy@ietf.org; idr wg <idr@ietf.org>;
> SPRING WG <spring@ietf.org>; Fangsheng <fangsheng@huawei.com>; stefano
> previdi <stefano@previdi.net>
> *Subject:* Re: [Idr] Comments: Route Origin Community in SR
> Policy(draft-ietf-spring-segment-routing-policy)
>
>
>
> Hi Chengli and Ketan,
>
>
>
> Well I think (perhaps to your surprise) the current text is actually
> correct.
>
>
>
> See the overall idea of section 2.4 is not to define the real source of
> the candidate path. That is done in section 2.5 The idea here is to keep
> multiple *paths or versions* of the candidate paths in the local system
> uniquely.
>
>
>
> See if you continue reading section 2.6 demystifies the real objective:
>
>
>
>    The tuple <Protocol-Origin, originator, discriminator> uniquely
>
>    identifies a candidate path.
>
>
>
> So the real originator is encoded in discriminator and here it just means=
 the peer candidate path was
>
> received from. And if you read on this entire exercise only servers best =
path selection as described in section 2.9.
>
>
>
> .... the following order until only one valid best path is selected:
>
>
>
>    1.  Higher value of Protocol-Origin is selected.
>
>
>
>    2.  If specified by configuration, prefer the existing installed
>
>        path.
>
>
>
>    3.  Lower value of originator is selected.
>
>
>
>    4.  Finally, the higher value of discriminator is selected.
>
>
>
> +
>
>       The originator allows an operator to have multiple redundant
>
>       controllers and still maintain a deterministic behaviour over
>
>       which of them are preferred even if they are providing the same
>
>       candidate paths for the same SR policies to the headend.
>
>
>
> Thx,
> R.
>
>
>
> On Thu, Apr 30, 2020 at 10:46 AM Ketan Talaulikar (ketant) <ketant=3D
> 40cisco.com@dmarc.ietf.org> wrote:
>
> Hi Cheng,
>
>
>
> I assume you are recommending the use of Route Origin Extended Community =
(
> https://tools.ietf.org/html/rfc4360#section-5) for conveying the
> =E2=80=9COriginator=E2=80=9D when the SR Policy update is propagated over=
 eBGP sessions via
> other eBGP/iBGP sessions instead of direct peering with the headend.
>
>
>
> I believe it does address the scenario you describe given that it is
> expected that SR Policy propagation via BGP is happening within a single
> administrative domain even if it comprises of multiple ASes.
>
>
>
> Also copying the IDR WG for inputs since this would likely need to be
> updated in draft-ietf-idr-segment-routing-te-policy.
>
>
>
> Thanks,
>
> Ketan
>
>
>
> *From:* spring <spring-bounces@ietf.org> *On Behalf Of *Chengli (Cheng Li=
)
> *Sent:* 30 April 2020 07:34
> *To:* draft-ietf-spring-segment-routing-policy@ietf.org
> *Cc:* SPRING WG <spring@ietf.org>; huruizhao <huruizhao@huawei.com>;
> Fangsheng <fangsheng@huawei.com>
> *Subject:* [spring] Comments: Route Origin Community in SR
> Policy(draft-ietf-spring-segment-routing-policy)
>
>
>
> Hi authors,
>
>
>
> In section 2.4 of [draft-ietf-spring-segment-routing-policy-06],
> introduced how the node-address of "Originator of CP(Candidate Path)" is
> generated when the Protocol-Origin is BGP. It says:
>
>     =E2=80=9CProtocol-Origin is BGP SR Policy, it is provided by the BGP =
component
> on the headend and is:
>
>      o  the BGP Router ID and ASN of the node/controller signalling the
> candidate path when it has a BGP session to the headend, OR
>
>      o  the BGP Router ID of the eBGP peer signalling the candidate path
> along with ASN of origin when the signalling is done via one or  more
> intermediate eBGP routers, OR
>
>      o  the BGP Originator ID [RFC4456] and the ASN of the
> node/controller  when the signalling is done via one or more
> route-reflectors over  iBGP session.=E2=80=9D
>
>
>
> In the operator's network, in order to reduce the number of  BGP sessions
> in controller and achieve scalability, the controller only establishes eB=
GP
> peer with the RR. And the RR establishes iBGP peers with the headends. As
> mentioned in the draft, the headend will use the RR's Router ID as the CP=
's
> node-address (the signaling is done via route transmission from RR to the
> headend instead of route reflection).  The headend needs to carry the CP'=
s
> key when reporting the SR Policy status to the controller through BGP-LS.
> And there is a problem that the controller may not recognize the key
> because the node-address is generated by the RR node.
>
>
>
> For network robustness, two or more RRs are usually deployed. This will
> introduce another problem.. When the same CP advertised by the controller
> is delivered to the headend through different RRs, the headend cannot
> distinguish whether it is the same CP because the node-address in the CPs=
'
> key  comes from different RRs.
>
>
>
> To solve these problems,  We recommend carrying the Route Origin Communit=
y
> (defined in RFC 4360) directly when the controller advertises BGP routes.
> In this way, the key  of the CP is determined by the controller and will
> not change during the advertisement of BGP routes.
>
>
>
> Thanks,
>
> Cheng
>
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
> --
>
> <http://www.verizon.com/>
>
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
>
> *Gyan Mishra*
>
> *Network Solutions Architect *
>
>
>
> *M 301 502-1347 13101 Columbia Pike
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
> *Silver Spring, MD
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
>
>
>
--=20

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--000000000000dc985d05a70c79cf
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div><br></div><div><div dir=3D"auto">Hi Ketan=C2=A0</div><div dir=3D"auto"=
><br></div><div dir=3D"auto">Thank you for the response.=C2=A0 I believe th=
at does answer the general questions from a draft specification perspective=
. =C2=A0 I had not read all the way through the draft so missed that sectio=
n.=C2=A0 I do have some Cisco specific SR-TE questions that I will ping you=
 off list.</div><div dir=3D"auto"><br></div><div dir=3D"auto">Kind regards=
=C2=A0</div><div dir=3D"auto"><br></div><div dir=3D"auto">Gyan</div><br><di=
v class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Jun 1=
, 2020 at 10:59 AM Ketan Talaulikar (ketant) &lt;<a href=3D"mailto:ketant@c=
isco.com">ketant@cisco.com</a>&gt; wrote:<br></div><blockquote class=3D"gma=
il_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-lef=
t:1ex">





<div lang=3D"EN-IN" link=3D"blue" vlink=3D"purple">
<div class=3D"m_7132538022394705190WordSection1">
<p class=3D"MsoNormal"><span>Hi Gyan,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span>Your question is a bit orthogonal to the threa=
d and my apologies if I did not get it right.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span>Could you please check whether the following s=
ection clarifies what you were looking for?<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><a href=3D"https://datatracker.ietf.org/doc/html/dra=
ft-ietf-spring-segment-routing-policy-07#section-8.4" target=3D"_blank">htt=
ps://datatracker.ietf.org/doc/html/draft-ietf-spring-segment-routing-policy=
-07#section-8.4</a><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span>The draft does not talk about the application =
of a specific Color Extended Community attribute to all routes belonging to=
 a specific VRF since that is more of a local policy or implementation matt=
er.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span>Thanks,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>Ketan<u></u><u></u></span></p></div></div><div=
 lang=3D"EN-IN" link=3D"blue" vlink=3D"purple"><div class=3D"m_713253802239=
4705190WordSection1">
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Gyan Mishra &lt;<a href=3D"mailto:hayabusagsm@gmail.com" target=
=3D"_blank">hayabusagsm@gmail.com</a>&gt;
<br>
<b>Sent:</b> 01 June 2020 19:17<br>
<b>To:</b> Chengli (Cheng Li) &lt;<a href=3D"mailto:c.l@huawei.com" target=
=3D"_blank">c.l@huawei.com</a>&gt;<br>
<b>Cc:</b> Fangsheng &lt;<a href=3D"mailto:fangsheng@huawei.com" target=3D"=
_blank">fangsheng@huawei.com</a>&gt;; Ketan Talaulikar (ketant) &lt;<a href=
=3D"mailto:ketant@cisco.com" target=3D"_blank">ketant@cisco.com</a>&gt;; Ro=
bert Raszuk &lt;<a href=3D"mailto:robert@raszuk.net" target=3D"_blank">robe=
rt@raszuk.net</a>&gt;; SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" tar=
get=3D"_blank">spring@ietf.org</a>&gt;; <a href=3D"mailto:draft-ietf-spring=
-segment-routing-policy@ietf.org" target=3D"_blank">draft-ietf-spring-segme=
nt-routing-policy@ietf.org</a>; idr wg &lt;<a href=3D"mailto:idr@ietf.org" =
target=3D"_blank">idr@ietf.org</a>&gt;; stefano previdi &lt;<a href=3D"mail=
to:stefano@previdi.net" target=3D"_blank">stefano@previdi.net</a>&gt;<br>
<b>Subject:</b> Re: [spring] [Idr] Comments: Route Origin Community in SR P=
olicy(draft-ietf-spring-segment-routing-policy)<u></u><u></u></span></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<div>
<p class=3D"MsoNormal">Ketan<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks for sharing this draft. =C2=A0<u></u><u></u><=
/p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">This draft below is the SR-TE policy itself but the =
piece I was missing was the BGP interaction between SR-TE and new SAFI to a=
dvertise SR-TE policy into BGP which is the critical component of the per V=
RF coloring schema to steer L3 vpn
 traffic.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><a href=3D"https://datatracker.ietf.org/doc/html/dra=
ft-ietf-spring-segment-routing-policy-07" target=3D"_blank">https://datatra=
cker.ietf.org/doc/html/draft-ietf-spring-segment-routing-policy-07</a><u></=
u><u></u></p>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal">On Mon, Jun 1, 2020 at 3:25 AM Chengli (Cheng Li) &l=
t;<a href=3D"mailto:c.l@huawei.com" target=3D"_blank">c.l@huawei.com</a>&gt=
; wrote:<u></u><u></u></p>
</div>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0c=
m 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">Hi Keta=
n,</span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">=C2=A0<=
/span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">Sorry f=
or my delay, I saw the update, and it has addressed my comments, many thank=
s.</span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">=C2=A0<=
/span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">Best,<b=
r>
Cheng</span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">=C2=A0<=
/span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">=C2=A0<=
/span><span lang=3D"EN-US"><u></u><u></u></span></p>
</div>
</div>
<div>
<div>
<div>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Ketan Talaulikar (ketant) [mailto:<a href=3D"mailto:ketant@cisc=
o.com" target=3D"_blank">ketant@cisco.com</a>]
<br>
<b>Sent:</b> Monday, May 18, 2020 8:00 PM<br>
<b>To:</b> Robert Raszuk &lt;<a href=3D"mailto:robert@raszuk.net" target=3D=
"_blank">robert@raszuk.net</a>&gt;<br>
<b>Cc:</b> Chengli (Cheng Li) &lt;<a href=3D"mailto:c.l@huawei.com" target=
=3D"_blank">c.l@huawei.com</a>&gt;;
<a href=3D"mailto:draft-ietf-spring-segment-routing-policy@ietf.org" target=
=3D"_blank">
draft-ietf-spring-segment-routing-policy@ietf.org</a>; idr wg &lt;<a href=
=3D"mailto:idr@ietf.org" target=3D"_blank">idr@ietf.org</a>&gt;; SPRING WG =
&lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a=
>&gt;; Fangsheng &lt;<a href=3D"mailto:fangsheng@huawei.com" target=3D"_bla=
nk">fangsheng@huawei.com</a>&gt;;
 stefano previdi &lt;<a href=3D"mailto:stefano@previdi.net" target=3D"_blan=
k">stefano@previdi.net</a>&gt;<br>
<b>Subject:</b> RE: [Idr] Comments: Route Origin Community in SR Policy(dra=
ft-ietf-spring-segment-routing-policy)<u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal">Hi Robert,<span lang=3D"EN-US"><u></u><u></u></span>=
</p>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">You are right that the =E2=80=9COriginator=E2=80=9D =
is not used in BGP best path and is just for a tie-breaking logic in SRTE b=
etween paths from different protocols and controllers. I doubt if
 there is a functional issue here.<span lang=3D"EN-US"><u></u><u></u></span=
></p>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">I thought that Chengli was bringing in some new/diff=
erent requirement for the =E2=80=9COriginator=E2=80=9D field for some deplo=
yment design. I haven=E2=80=99t seen a response/clarification from him as
 yet, and so perhaps I misunderstood him in which case we are ok here.<span=
 lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">Thanks,<span lang=3D"EN-US"><u></u><u></u></span></p=
>
<p class=3D"MsoNormal">Ketan<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Robert Raszuk &lt;<a href=3D"mailto:robert@raszuk.net" target=
=3D"_blank">robert@raszuk.net</a>&gt;
<br>
<b>Sent:</b> 30 April 2020 14:46<br>
<b>To:</b> Ketan Talaulikar (ketant) &lt;<a href=3D"mailto:ketant@cisco.com=
" target=3D"_blank">ketant@cisco.com</a>&gt;<br>
<b>Cc:</b> Chengli (Cheng Li) &lt;<a href=3D"mailto:chengli13@huawei.com" t=
arget=3D"_blank">chengli13@huawei.com</a>&gt;;
<a href=3D"mailto:draft-ietf-spring-segment-routing-policy@ietf.org" target=
=3D"_blank">
draft-ietf-spring-segment-routing-policy@ietf.org</a>; idr wg &lt;<a href=
=3D"mailto:idr@ietf.org" target=3D"_blank">idr@ietf.org</a>&gt;; SPRING WG =
&lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a=
>&gt;; Fangsheng &lt;<a href=3D"mailto:fangsheng@huawei.com" target=3D"_bla=
nk">fangsheng@huawei.com</a>&gt;;
 stefano previdi &lt;<a href=3D"mailto:stefano@previdi.net" target=3D"_blan=
k">stefano@previdi.net</a>&gt;<br>
<b>Subject:</b> Re: [Idr] Comments: Route Origin Community in SR Policy(dra=
ft-ietf-spring-segment-routing-policy)<u></u><u></u></span></p>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
<div>
<p class=3D"MsoNormal">Hi Chengli and Ketan,<span lang=3D"EN-US"><u></u><u>=
</u></span></p>
<div>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal">Well I think (perhaps to your surprise) the current =
text is actually correct.=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></=
p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal">See the overall idea of section 2.4 is not to define=
 the real source of the candidate path. That is done in section 2.5 The ide=
a here is to keep multiple *paths or versions* of
 the candidate paths in the local system uniquely.=C2=A0<span lang=3D"EN-US=
"><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal">See if you continue reading section 2.6 demystifies =
the real objective:=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
</div>
<div>
<pre style=3D"break-before:page"><span style=3D"color:black">=C2=A0=C2=A0 T=
he tuple &lt;Protocol-Origin, originator, discriminator&gt; uniquely</span>=
<span lang=3D"EN-US"><u></u><u></u></span></pre>
<pre><span style=3D"color:black">=C2=A0=C2=A0 identifies a candidate path.<=
/span><span lang=3D"EN-US"><u></u><u></u></span></pre>
<pre style=3D"break-before:page"><span style=3D"color:black">=C2=A0</span><=
span lang=3D"EN-US"><u></u><u></u></span></pre>
<pre style=3D"break-before:page"><span style=3D"font-family:&quot;Arial&quo=
t;,sans-serif;color:black">So the real originator is encoded in discriminat=
or and here it just means the peer candidate=C2=A0path was </span><span lan=
g=3D"EN-US"><u></u><u></u></span></pre>
<pre style=3D"break-before:page"><span style=3D"font-family:&quot;Arial&quo=
t;,sans-serif;color:black">received from. And if you read on this entire ex=
ercise only servers best path selection as described in section 2.9. </span=
><span lang=3D"EN-US"><u></u><u></u></span></pre>
<pre style=3D"break-before:page"><span style=3D"color:black">=C2=A0</span><=
span lang=3D"EN-US"><u></u><u></u></span></pre>
<pre style=3D"break-before:page"><span style=3D"color:black">.... the follo=
wing order until only one valid best path is selected:</span><span lang=3D"=
EN-US"><u></u><u></u></span></pre>
<pre><span style=3D"color:black">=C2=A0</span><span lang=3D"EN-US"><u></u><=
u></u></span></pre>
<pre><span style=3D"color:black">=C2=A0=C2=A0 1.=C2=A0 Higher value of Prot=
ocol-Origin is selected.</span><span lang=3D"EN-US"><u></u><u></u></span></=
pre>
<pre><span style=3D"color:black">=C2=A0</span><span lang=3D"EN-US"><u></u><=
u></u></span></pre>
<pre><span style=3D"color:black">=C2=A0=C2=A0 2.=C2=A0 If specified by conf=
iguration, prefer the existing installed</span><span lang=3D"EN-US"><u></u>=
<u></u></span></pre>
<pre><span style=3D"color:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 path.=
</span><span lang=3D"EN-US"><u></u><u></u></span></pre>
<pre><span style=3D"color:black">=C2=A0</span><span lang=3D"EN-US"><u></u><=
u></u></span></pre>
<pre><span style=3D"color:black">=C2=A0=C2=A0 3.=C2=A0 Lower value of origi=
nator is selected.</span><span lang=3D"EN-US"><u></u><u></u></span></pre>
<pre><span style=3D"color:black">=C2=A0</span><span lang=3D"EN-US"><u></u><=
u></u></span></pre>
<pre><span style=3D"color:black">=C2=A0=C2=A0 4.=C2=A0 Finally, the higher =
value of discriminator is selected.</span><span lang=3D"EN-US"><u></u><u></=
u></span></pre>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal">+<span lang=3D"EN-US"><u></u><u></u></span></p>
</div>
<div>
<pre style=3D"break-before:page"><span style=3D"color:black">=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 The originator allows an operator to have multiple redun=
dant</span><span lang=3D"EN-US"><u></u><u></u></span></pre>
<pre><span style=3D"color:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 controllers=
 and still maintain a deterministic behaviour over</span><span lang=3D"EN-U=
S"><u></u><u></u></span></pre>
<pre><span style=3D"color:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 which of th=
em are preferred even if they are providing the same</span><span lang=3D"EN=
-US"><u></u><u></u></span></pre>
<pre><span style=3D"color:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 candidate p=
aths for the same SR policies to the headend.</span><span lang=3D"EN-US"><u=
></u><u></u></span></pre>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal">Thx,<br>
R.<span lang=3D"EN-US"><u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
<div>
<div>
<p class=3D"MsoNormal">On Thu, Apr 30, 2020 at 10:46 AM Ketan Talaulikar (k=
etant) &lt;ketant=3D<span lang=3D"EN-US"><a href=3D"mailto:40cisco.com@dmar=
c.ietf.org" target=3D"_blank"><span lang=3D"EN-IN">40cisco.com@dmarc.ietf.o=
rg</span></a></span>&gt;
 wrote:<span lang=3D"EN-US"><u></u><u></u></span></p>
</div>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0c=
m 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-=
bottom:5.0pt">
<div>
<div>
<p class=3D"MsoNormal">Hi Cheng,<span lang=3D"EN-US"><u></u><u></u></span><=
/p>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">I assume you are recommending the use of Route Origi=
n Extended Community (<span lang=3D"EN-US"><a href=3D"https://tools.ietf.or=
g/html/rfc4360#section-5" target=3D"_blank"><span lang=3D"EN-IN">https://to=
ols.ietf.org/html/rfc4360#section-5</span></a></span>)
 for conveying the =E2=80=9COriginator=E2=80=9D when the SR Policy update i=
s propagated over eBGP sessions via other eBGP/iBGP sessions instead of dir=
ect peering with the headend.<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">I believe it does address the scenario you describe =
given that it is expected that SR Policy propagation via BGP is happening w=
ithin a single administrative domain even if it comprises
 of multiple ASes.<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">Also copying the IDR WG for inputs since this would =
likely need to be updated in draft-ietf-idr-segment-routing-te-policy.<span=
 lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">Thanks,<span lang=3D"EN-US"><u></u><u></u></span></p=
>
<p class=3D"MsoNormal">Ketan<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
<div>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> spring &lt;<a href=3D"mailto:spring-bounces@ietf.org" target=3D=
"_blank">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Chengli (Cheng Li)<br>
<b>Sent:</b> 30 April 2020 07:34<br>
<b>To:</b> <a href=3D"mailto:draft-ietf-spring-segment-routing-policy@ietf.=
org" target=3D"_blank">
draft-ietf-spring-segment-routing-policy@ietf.org</a><br>
<b>Cc:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;; huruizhao &lt;<a href=3D"mailto:huruizhao@huawe=
i.com" target=3D"_blank">huruizhao@huawei.com</a>&gt;; Fangsheng &lt;<a hre=
f=3D"mailto:fangsheng@huawei.com" target=3D"_blank">fangsheng@huawei.com</a=
>&gt;<br>
<b>Subject:</b> [spring] Comments: Route Origin Community in SR Policy(draf=
t-ietf-spring-segment-routing-policy)<u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal">=C2=A0<span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">Hi auth=
ors,</span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">=C2=A0<=
/span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">In sect=
ion 2.4 of [draft-ietf-spring-segment-routing-policy-06], introduced how th=
e node-address of &quot;Originator of CP(Candidate Path)&quot; is
 generated when the Protocol-Origin is BGP. It says:</span><span lang=3D"EN=
-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">=C2=A0 =
=C2=A0 =E2=80=9CProtocol-Origin is BGP SR Policy, it is provided by the BGP=
 component on the headend and is:</span><span lang=3D"EN-US"><u></u><u></u>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">=C2=A0=
=C2=A0=C2=A0=C2=A0 o=C2=A0 the BGP Router ID and ASN of the node/controller=
 signalling the candidate path when it has a BGP session to the headend, OR=
</span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">=C2=A0=
=C2=A0=C2=A0=C2=A0 o=C2=A0 the BGP Router ID of the eBGP peer signalling th=
e candidate path=C2=A0 along with ASN of origin when the signalling is done=
 via one or=C2=A0
 more intermediate eBGP routers, OR</span><span lang=3D"EN-US"><u></u><u></=
u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">=C2=A0=
=C2=A0=C2=A0=C2=A0 o=C2=A0 the BGP Originator ID [RFC4456] and the ASN of t=
he node/controller=C2=A0 when the signalling is done via one or more route-=
reflectors
 over=C2=A0 iBGP session.=E2=80=9D</span><span lang=3D"EN-US"><u></u><u></u=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">=C2=A0=
=C2=A0
</span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">In the =
operator&#39;s network, in order to reduce the number of=C2=A0 BGP sessions=
 in controller and achieve scalability, the controller only establishes
 eBGP peer with the RR. And the RR establishes iBGP peers with the headends=
. As mentioned in the draft, the headend will use the RR&#39;s Router ID as=
 the CP&#39;s node-address (the signaling is done via route transmission fr=
om RR to the headend instead of route reflection).=C2=A0
 The headend needs to carry the CP&#39;s key when reporting the SR Policy s=
tatus to the controller through BGP-LS. And there is a problem that the con=
troller may not recognize the key because the node-address is generated by =
the RR node.</span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">=C2=A0<=
/span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">For net=
work robustness, two or more RRs are usually deployed. This will introduce =
another problem.. When the same CP advertised by the controller
 is delivered to the headend through different RRs, the headend cannot dist=
inguish whether it is the same CP because the node-address in the CPs&#39; =
key=C2=A0 comes from different RRs.
</span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">=C2=A0<=
/span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">To solv=
e these problems,=C2=A0 We recommend carrying the Route Origin Community (d=
efined in RFC 4360) directly when the controller advertises
 BGP routes.=C2=A0 In this way, the key=C2=A0 of the CP is determined by th=
e controller and will not change during the advertisement of BGP routes.</s=
pan><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">Thanks,=
</span><span lang=3D"EN-US"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1f497d">Cheng</=
span><span lang=3D"EN-US"><u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal">_______________________________________________<br>
Idr mailing list<br>
<span lang=3D"EN-US"><a href=3D"mailto:Idr@ietf.org" target=3D"_blank"><spa=
n lang=3D"EN-IN">Idr@ietf.org</span></a></span><br>
<span lang=3D"EN-US"><a href=3D"https://www.ietf.org/mailman/listinfo/idr" =
target=3D"_blank"><span lang=3D"EN-IN">https://www.ietf.org/mailman/listinf=
o/idr</span></a><u></u><u></u></span></p>
</blockquote>
</div>
</div>
</div>
<p class=3D"MsoNormal">_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" target=3D"_blank">=
https://www.ietf.org/mailman/listinfo/spring</a><u></u><u></u></p>
</blockquote>
</div>
</div>
<p class=3D"MsoNormal">-- <u></u><u></u></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<p><span style=3D"color:#222222"><a href=3D"http://www.verizon.com/" target=
=3D"_blank"><span style=3D"color:#1155cc;text-decoration:none"><img border=
=3D"0" width=3D"81" height=3D"18" style=3D"width:.8416in;height:.1916in" id=
=3D"m_7132538022394705190_x0000_i1025" src=3D"http://ss7.vzw.com/is/image/V=
erizonWireless/vz-logo-email"></span></a><u></u><u></u></span></p><a href=
=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Sp=
ring,+MD?entry=3Dgmail&amp;source=3Dg">
</a><p style=3D"margin:0cm;margin-bottom:.0001pt"><b><span style=3D"font-fa=
mily:&quot;Arial&quot;,sans-serif;color:black">Gyan Mishra</span></b><span =
style=3D"font-family:&quot;Arial&quot;,sans-serif;color:black"><u></u><u></=
u></span></p>
<p style=3D"margin:0cm;margin-bottom:.0001pt"><i><span style=3D"font-family=
:&quot;Georgia&quot;,serif;color:black">Network Solutions Architect=C2=A0</=
span></i><span style=3D"color:#222222"><u></u><u></u></span></p>
<p style=3D"margin:0cm;margin-bottom:.0001pt"><i><span style=3D"font-family=
:&quot;Georgia&quot;,serif;color:black">M 301 502-1347<br>
<a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Si=
lver+Spring,+MD?entry=3Dgmail&amp;source=3Dg">13101 Columbia Pike</a>=C2=A0=
<br>
</span></i><span style=3D"color:black"><a href=3D"https://www.google.com/ma=
ps/search/13101+Columbia+Pike+%0D%0A+Silver+Spring,+MD?entry=3Dgmail&amp;so=
urce=3Dg">Silver Spring, MD</a><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>

</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"l=
tr"><div><p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com=
/" style=3D"color:rgb(17,85,204);padding-bottom:1em;display:inline-block" t=
arget=3D"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz=
-logo-email" width=3D"81" height=3D"18" style=3D"height:18px;width:81px"></=
a><br></p><p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NH=
G DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b=
></p><p style=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font fac=
e=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutio=
ns A</i></font><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=
=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px;line-height:13px;=
color:black"><i><font face=3D"georgia, serif">M 301 502-1347<br>13101 Colum=
bia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div></di=
v></div></div></div></div></div></div></div>

--000000000000dc985d05a70c79cf--


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Dear Fernando, Andrew, and Sander:

The IESG has reviewed your appeal to the declaration of WG consensus to =
progress draft-ietf-spring-srv6-network-programming.  Based on our =
review of the technical and process-related points presented, we do not =
believe there is a basis for returning the document to the SPRING WG for =
a second working group last call.  In drawing this conclusion we =
reviewed the discussions about this document and related technical =
issues that have taken place in the SPRING WG and in the 6MAN WG.

While we do not believe the document needs to be returned to the SPRING =
WG, there are some actions that we consider necessary to address some of =
the concerns you have raised.  These actions are detailed later on.

Martin Vigoureux was not involved in processing this appeal.

As detailed in RFC 2418 (IETF Working Group Guidelines and Procedures) =
[RFC 2418], working groups have a good amount of flexibility, including =
operational aspects related to how last calls are handled, up to and =
including whether a working group last call is needed or not.  It is =
common for documents that change as a result of reviews at different =
stages of the process to continue on the publication path without =
further rigorous discussion and approval by the whole WG.  This point is =
especially true when the changes are in line with previously identified =
WG consensus.

Furthermore, the ability for a working group to reach consensus is not =
dependent on an absolute level of knowledge about relevant =
implementations or deployment details. Working groups come to =
conclusions based on the knowledge available in the group. The full IETF =
document publication process, including IETF Last Call and IESG =
Evaluation, aims to provide thorough review across all aspects of a =
protocol, its usage, and deployment.

In relation to procedural concern 1, our understanding of the process =
that occurred is that Martin Vigoureux, as Responsible AD, evaluated the =
WG last call consensus on this document because one co-chair was =
unavailable and the other co-chair is listed in the document as a =
contributor. Ideally every working group would be chaired by multiple =
chairs who are not also involved with active documents in the working =
group, or other documents related to them, but given the IETF=E2=80=99s =
voluntary participation this is not always feasible. The particularly =
contentious debates in the SPRING WG have made it extremely difficult to =
identify participants to fill chair and shepherd roles who are free of =
potential perceived conflicts and willing to manage the consensus =
process. Having the Responsible AD make the consensus call in the WG =
does not violate the IETF process and was a reasonable choice under the =
circumstances.

Having said that, a named contributor handling the WG process can be =
perceived as a potential conflict of interest.  As was discussed in the =
mailing list following the original query [COI], the contentious nature =
of this document has made the situation much more apparent.  =20

In relation to procedural concern 2, related to the WG not having enough =
time to review the changes included in =
draft-ietf-spring-srv6-network-programming-11, it is unfortunate that =
this version was published just hours before the consensus call =
[WGLC-O2].  Upon examination of the changes [diff-10-11], it is clear =
that the additional text is in line with the expressed rough consensus, =
and that it tries to address some of the technical issues pointed out in =
your appeal (more details below).  The further changes up to the current =
version [diff-11-15] also address the same topic.  There are no changes =
that impact the consensus of the WG related to the normative behavior =
that the document specifies. =20

In relation to procedural concern 3, about the contents of the =
Shepherd's Writeup, we first want to reinforce that the objective of =
such writeup [RFC 4858] is to inform the Responsible Area Director, and =
the rest of the IESG, of any issues that they should be aware of prior =
to IESG Evaluation.  As such, the Writeup can change over time.   We =
note that the current version [WRITEUP] talks about the rough nature of =
the discussion and does cover most of the technical points presented in =
this appeal.

In relation to technical point 1, the justification for the need of PSP, =
we have observed several attempts at explanation in the WG discussions. =
To pick just one example, the =E2=80=9CSRv6 PSP use case=E2=80=9D thread =
[PSP-USE-CASE] begins a discussion with an explanation of IP-tunnel =
capable nodes on the edge of an SR domain.  The 3rd paragraph of Section =
4.16.1 in the latest version of the document captures some of when PSP =
might be used.

In relation to technical points 2 and 3, the claim that the PSP behavior =
(in Section 4.16.1 of the document) violates RFC 8200 is clearly the =
most significant issue presented.  The charter of the SPRING WG states =
it should avoid modification to existing data planes.  A strict literal =
reading of the text in RFC 8200 does not forbid the kind of extension =
header manipulation described in Section 4.16.1, and the latest version =
includes a statement to this effect.  To be specific, the text from RFC =
8200 that the draft relies upon is the explicit differentiation between =
a Destination Address and the =E2=80=9Cultimate recipient=E2=80=9D =
described in Section 3, and the use in Section 4 of the phrase =
=E2=80=9Cidentified in the Destination Address field of the IPv6 =
header=E2=80=9C.  This text in RFC 8200 has been discussed in the 6man =
WG multiple times, including at the most recent 6man interim =
[6MAN-MINUTES].  The draft-ietf-6man-rfc2460bis consensus process =
resulted in the text in RFC 8200; contentious as interpretations of this =
text may yet be, the draft in question is not inconsistent with a strict =
literal reading, as noted by Suresh Krishnan (INT AD at the time) in the =
3 mail archive links Martin Vigoureux included in his call of WG =
consensus [WGLC-02].   Martin Vigoureux evaluated the working group=E2=80=99=
s consensus on whether to use this reading [WGLC-8200], and no change to =
RFC 8200 was under discussion.  Any change to RFC 8200 would require a =
consensus document from the 6man WG.

In relation to technical point 4, a more prescriptive SID format, the =
request [SID] was replied to on a different thread [SID-R].  However, =
some points remain unaddressed by the document and therefore need some =
discussion and clarification including the nature and extent of any =
restrictions on IPv6 addresses that may be SIDs under the format =
described in Section 3.1 (the LOC, FUNCT, and ARG portions of the IPv6 =
address). Somewhat surprising to the casual reader, the SRv6 Endpoint =
Behaviors registry set up in section 9.2 states that these values are =
not necessarily related to the FUNCT portion of the address. An =
editorial clarification, including one or more illustrative examples, is =
required.

In relation to technical point 5, the deployability of SIDs as related =
to their address size, the document does not list any requirement nor =
make general recommendation for the LOC prefix sizes that may be used by =
operators.  There is no example showing the use of a /40 LOC prefix.  =
One example provided in Section 3.2 shows two 128-bit SIDs, with up to =
63 LOC prefix bits in common, and discusses routing in the network based =
on /64s.  Some discussion or, at a minimum, illustrative examples are =
needed.

While we do not believe the document needs to be returned to the SPRING =
WG, there are some actions that we consider necessary to address some of =
the concerns you have raised.

Once a document leaves a WG it becomes the AD's responsibility. To =
manage the actions detailed below and guide the document through the =
rest of the process, in line with RFC 4858 [RFC 4858], we are asking =
Martin Vigoureux, as Responsible AD, to assign a new Document Shepherd.

Specifically, related to technical points 4 and 5 of your appeal, the =
Shepherd is asked to work with the authors to add clarifying text =
related to the SID format and corresponding deployment recommendations, =
including examples and any requirements related to the address-space =
needed.   These topics were raised on the WG=E2=80=99s mailing list, but =
some of the answers and discussions are not reflected in the document. =
These clarifications will be helpful as the document progresses.

In relation to technical point 1, the 3rd paragraph of Section 4.16.1 in =
the latest version of the document provides some description of when PSP =
might be used.  The appointed Shepherd is asked to work with the authors =
to provide additional justification, guidelines for its use, and/or =
further clarify the existing text.  This topic was discussed on the =
WG=E2=80=99s mailing list, but it is not reflected in the document.

The document Shepherd is asked to confirm that SID format and deployment =
concerns have been adequately addressed. While the deployment aspects =
may be explored in depth in separate documents a high level summary or =
cursory example might suffice for this document.

The IESG expects the actions mentioned above for the Shepherd, including =
guiding any relevant discussions, to be carried out before the IETF Last =
Call of this document starts.  All of these actions are intended to =
clarify the contents of the document, in line with the existing WG =
consensus.

This note represents the consensus of the IESG related to the appeal =
presented, and not a thorough review of the document in question, nor an =
implicit endorsement.  As the document moves forward, the community and =
the IESG are expected to provide their usual level of review.=20

Thank you!

The IESG


[[ References ]]

[6MAN-MINUTES] =
https://datatracker.ietf.org/doc/minutes-interim-2020-6man-02-202005051500=
/

[COI]
=
https://mailarchive.ietf.org/arch/msg/spring/VK75j1TlsEA1zFcQ_IjC0_g86Og/

[diff-10-11] =
https://www.ietf.org/rfcdiff?url1=3Ddraft-ietf-spring-srv6-network-program=
ming-10&url2=3Ddraft-ietf-spring-srv6-network-programming-11

[diff-11-15] =
https://www.ietf.org/rfcdiff?url1=3Ddraft-ietf-spring-srv6-network-program=
ming-11&url2=3Ddraft-ietf-spring-srv6-network-programming-15

[PSP-USE-CASE] =
https://mailarchive.ietf.org/arch/msg/spring/UBvebWMkDTj7QDBkkGOflrT1t4o/

[RFC 2418]
https://tools.ietf.org/html/rfc2418

[RFC 4858]
https://tools.ietf.org/html/rfc4858=20

[SID]
=
https://mailarchive.ietf.org/arch/msg/spring/2ApHpreqPTS689pAEyhiZEdTf7k/

[SID-R]
https://mailarchive.ietf.org/arch/msg/spring/
Dhtemt1hHArvlMy_ibGE4am05dw/=20

[WGLC-O2]
=
https://mailarchive.ietf.org/arch/msg/spring/VxWwLVXBD0gRbUb4nD_NY6lE-MI/=20=


[WGLC-8200]
=
https://mailarchive.ietf.org/arch/msg/spring/CmT-8nSZs8O8i9N9dD8gHd6uHAo/

[WRITEUP]
=
https://datatracker.ietf.org/doc/draft-ietf-spring-srv6-network-programmin=
g/shepherdwriteup/=20


> On Apr 22, 2020, at 10:26 PM, Fernando Gont <fgont@si6networks.com> =
wrote:
>=20
> IESG,
>=20
> As we had promised to the 6man WG and the Spring WG, we are contacting =
you to formally appeal the declaration of WG consensus to progress =
draft-ietf-spring-srv6-network-programming.
> (we are cc'ing the 6man WG, the Spring WG, and the general IETF list =
for the sake of transparency and openness).
>=20
> * Appellants:
>=20
> Fernando Gont <fgont@si6networks.com>
> Andrew Alston <Andrew.Alston@liquidtelecom.com>
> Sander Steffann <sander@steffann.nl>
>=20
>=20
> * Description of the Dispute
>=20
> Recently, Spring WG consensus to progress =
draft-ietf-spring-srv6-network-programming was declared. However, we =
believe that major concerns raised as part of the WGLC of this document =
remained unaddressed at the time WG consensus was declared. =
Additionally, we believe that the WGLC process has not been handled with =
appropriate transparency.
>=20
> A Working Group Last Call (WGLC) was initiated on December 15, 2019 =
for the document draft-ietf-spring-srv6-network-programming [WGLC], by =
one of Spring WG co-chairs, Bruno Decraene.
>=20
> During the WGLC process, a number of concerns were raised on the =
document. While there have been ongoing discussions on some of these =
concerns, they remained unaddressed at the time consensus was declared, =
and it is unclear if the version of the document that has been shipped =
for publication has successfully addressed them, since the working group =
has not been given the chance to review the document that was shipped to =
the IESG for publication, with adequate time to comment. Among others, =
the aforementioned concerns include:
>=20
> 1) Participants requested a justification for the need of PSP
>   (Penultimate Segment Pop). [PSP-R]
>=20
>   Essentially, there is no general understanding on why PSP is needed.
>   Additionally, there have been concerns that PSP may be harmful.
>   Therefore, more analysis is needed both to justify the
>   specification of PSP, and to identify possible drawbacks associated
>   with it.
>=20
> 2) Participants have argued that PSP violates RFC8200 [IPV6-V]
>=20
>   Many participants have argued that, while the wording in RFC8200 is
>   far from perfect, the intent of RFC8200 has been to forbid en-route
>   header insertion/removal; as such, PSP is in violation of RFC8200.
>   At the very least, draft-ietf-spring-srv6-network-programming should
>   note that it is employing one very specific interpretation of =
RFC8200
>   for the WG and the IETF community as a whole to have the necessary
>   elements to make a decision on this document when reviewing it as
>   part of the standardization process.
>=20
> 3) Participants noted that PSP violates the specification of routing =
headers [SR-V]
>=20
>   PSP implies that the penultimate segment firstly processes a routing
>   header (as implied by RFC8200 and specified by RFC8754) and that,
>   if the penultimate segment finds that Segments Left =3D=3D 0, the =
segment
>   routing header be removed. This later behaviour deviates from =
RFC8200
>   and RFC8754. As such, the working group should decide whether such
>   documents should be updated by a separate effort in the relevant
>   working group (6man). We believe that
>   draft-ietf-spring-srv6-network-programming cannot proceed specifying
>   PSP before this issue has been resolved.
>=20
> 4) Participants requested a more prescriptive SID format [SID]
>=20
>   Since SIDs are eventually employed as IPv6 addresses in the
>   forwarding plane, it may be necessary to specify SIDs in a more
>   prescriptive way. Namely, require that SIDs result in IPv6
>   Unicast Addresses, and that conflicts with e.g. IPv6 reserved
>   addresses be avoided.
>=20
> 5) Participants questioned whether the SID format is deployable
>=20
>   The draft specifies a SID format, which is automatically an IPv6
>   prefix format. Concerns have been raised both on-list and at
>   an IETF meeting about the required address space needed to deploy
>   the technology described in the draft. Especially because a
>   presented example uses a /40, which is more than many networks have.
>   While discussing the document early on at an IETF meeting [SIZE-V],
>   better data on this was promised, but never delivered. While
>   restricting the used prefix sizes is not appropriate in this draft,
>   the authors, chair and responsible AD have consistently ignored
>   requests for real-life examples that demonstrate that the draft is
>   deployable with the current RIR policies, or that cooperation with
>   RIRs is necessary to make it deployable in the future. This issue =
was
>   noted yet once again before WGLC consensus was declared [SIZE-L].
>=20
>=20
> The request for justification of PSP was dismissed by Bruno Decraene, =
noting that
>=20
>  "I don't think that the SPRING WG can really evaluate this point
>   (lack of hardware knowledge, lack of detailed information on the
>   hardwares). The fact that this has been implemented by some =
platforms
>   and deployed by some operators, is, to me, an indication that it is
>   useful for those cases." [WGLC-O].
>=20
> We note that the same group that allegedly does not have the necessary =
skills or information for evaluating the need for PSP is the same group =
that has theoretically reached consensus to proceed with moving =
draft-ietf-spring-srv6-network-programming forward on the =
standardization process.
>=20
> The concern that this document violates RFC8200 was dismissed =
[WGLC-O], noting that an associated erratum (#5933) on RFC8200 [ERRATA] =
"has not been accepted by the responsible AD". However, at the time WG =
consensus was declared (February 28, 2020), the erratum had not yet been =
processed by the responsible AD (the associated erratum was processed on =
March 2, 2020).
>=20
> The concerns about whether the SID format is deployable was also =
discussed off-list with the responsible AD [SID-S]. At first, the AD =
seemed to be under the impression that enterprises (that often only have =
a /48 available) do not use technologies such as EVPN, L3VPN and network =
programming=10. This misjudgement of the AD has been made clear based on =
real life examples. However, further requests for better examples for =
the WG to be able to determine if this technology is deployable have =
been ignored.
>=20
> The rest of the concerns were dismissed without further comments =
(please see e.g. [SID-O]).
>=20
>=20
> In addition to the aforementioned technical issues, a number of =
procedural concerns have been raised as a result of the WGLC of this =
document, including:
>=20
> 1) Concerns [COI] about the conflict of interest represented by the =
WGLC
>   being handled by a Contributor (Bruno Decrane) of
>   draft-ietf-spring-srv6-network-programming.
>=20
>   In this respect, Bruno Decraene started the WGLC of this document
>   [WGLC], and eventually declared the outcome of the WGLC (noting that
>   he had handled the WGLC process [WGLC-O] because his co-chair was
>   unavailable), and that the responsible AD (Martin Vigoureux) would
>   make the formal decision to send the document to the next level.
>   Later on, the responsible AD (Martin Vigoureux) sent a more terse
>   notification to the Spring mailing-list [WGLC-O2] declaring WG
>   consensus to progress the document, while noting that he had
>   performed the evaluation of the WGLC process himself.
>=20
> 2) There was not enough time for the working group to review the draft
>   version on which consensus was declared. [REVIEW]
>=20
>   WG consensus [WGLC-O2] was declared for a second time (this time by
>   Martin Vigoureux, on March 2, 2020, at 18:53 UTC), on version
>   draft-ietf-spring-srv6-network-programming-11 of the document,
>   which had been announced on the Spring mailing-list [DRAFT-A] on
>   March 2, 2020, at 16:47 UTC.
>=20
> 3) The shepherd writeup for this document [WRITEUP] seems to be =
omitting
>   information and misrepresenting the process that took place in the
>   working group. At the time consensus was declared on the document
>   [WGLC-O] [WGLC-O2], all of the concerns listed above remained
>   unaddressed (e.g., please see [PSP-U] and [IPv6-U]). It took over =
one
>   month for the status of the document to be reflected on the
>   Datatracker. During this period of time, multiple requests were
>   publicly made about the status of the document [STATUS-1][STATUS-2]
>   [STATUS-3]. On March 11, 2020, the document shepherd claimed to be
>   preparing the shepherd's writeup [WRITEUP-2]. Since then, multiple
>   revisions of the document were published (-11 through -15),
>   apparently to address some of the concerns that seemed to have been
>   dismissed during the WGLC and when consensus to move the document
>   forward was declared. The resulting changes were not publicly
>   discussed on the mailing-list. When the status of the document was
>   finally updated in the Datatracker, the responsible AD noted
>   [WGLC-POST] that revisions published since WG consensus had been
>   declared addressed objections that had been raised during the WGLC =
of
>   the document. However, it is unclear if the version of the document
>   that has been shipped from the WG has successfully addressed them --
>   particularly when some of the aforementioned concerns had been =
raised
>   by multiple participants, and the corresponding document updates =
have
>   never been subject to discussion on the working group mailing-list.
>=20
> While these issues might have simply been the result of mistakes while =
handling the WGLC of this document, they have been unfortunate in terms =
of transparency of the process and credibility of the outcome of such =
process (see e.g. [PROC] and [REVIEW]).
>=20
>=20
> * Requested Action
>=20
> We request that the document be returned to the SPRING Working Group, =
such that the aforementioned technical concerns are addressed (and the =
WG has the chance to confirm they have been addressed), and that, =
subsequently, a second Working Group Last Call (WGLC) be initiated on =
the document. Additionally, we request that measures be taken such that =
possible conflicts of interest are avoided when evaluating this second =
WGLC.
>=20
>=20
> * References
>=20
> [COI] =
https://mailarchive.ietf.org/arch/msg/spring/VK75j1TlsEA1zFcQ_IjC0_g86Og/
>=20
> [DRAFT-A] =
https://mailarchive.ietf.org/arch/msg/spring/5W_t--Ns12g9zNhItaVe-sglwwY/
>=20
> [ERRATA] https://www.rfc-editor.org/errata/eid5933
>=20
> [IPV6-U] =
https://mailarchive.ietf.org/arch/msg/spring/zJvAkj4joRypuJ6ibBJFFoxXDD4/
>=20
> [IPV6-V] =
https://mailarchive.ietf.org/arch/msg/spring/XZ_D_cfPNNzXpi4_ZbuTidMTo4k/
>=20
> [IPV6-V2] =
https://mailarchive.ietf.org/arch/msg/spring/Xrcclo0s4pnug9upG9rUinYMv1I/
>=20
> [PROC] =
https://mailarchive.ietf.org/arch/msg/spring/fXdr3-uAFSYGZN2vOGSwC7IJ8Ow/
>=20
> [PSP-R] =
https://mailarchive.ietf.org/arch/msg/spring/eSP4xVYVgjtCmAMGMkqHedv80jU/
>=20
> [PSP-U] =
https://mailarchive.ietf.org/arch/msg/spring/EuJwUeIyyXonE0aGHCqwT2fd5G8/
>=20
> [REVIEW] =
https://mailarchive.ietf.org/arch/msg/spring/1kPMfQIRhf7EoOqA_3jtmo6dbt4/
>=20
> [SID] =
https://mailarchive.ietf.org/arch/msg/spring/2ApHpreqPTS689pAEyhiZEdTf7k/
>=20
> [SID-O] =
https://mailarchive.ietf.org/arch/msg/spring/BhIpH8b_Z-08NSq7wre36qAtqPY/
>=20
> [SID-S] Steffann, Sander, private communication. Please contact Sander =
Steffan at <sander@steffann.nl> for further details.
>=20
> [SIZE-L] =
https://mailarchive.ietf.org/arch/msg/spring/_SYsvWXQo9t4o2KbJuEiVS-75B4/
>=20
> [SIZE-V] Colitti, L. Spring wg meeting, IETF 105. =
https://youtu.be/WuoJWecyATQ?t=3D1241
>=20
> [SR-V] =
https://mailarchive.ietf.org/arch/msg/spring/Xrcclo0s4pnug9upG9rUinYMv1I/
>=20
> [STATUS-1] =
https://mailarchive.ietf.org/arch/msg/spring/odkMyhc1LUd-h6uHp9yNlDgnCTg/
>=20
> [STATUS-2] =
https://mailarchive.ietf.org/arch/msg/spring/klH4StuD4E8DhVVrgGEBIFUf0sE/
>=20
> [STATUS-3] =
https://mailarchive.ietf.org/arch/msg/spring/tLL_XuqUNPHzHuzhwL4-AUtVTEQ/
>=20
> [WGLC] =
https://mailarchive.ietf.org/arch/msg/spring/tFJ742P88QYh9Ns8N97gC8BPWA4/
>=20
> [WGLC-O] =
https://mailarchive.ietf.org/arch/msg/spring/or8086G4iYfee5_Icw4PnhkPLBo/
>=20
> [WGLC-O2] =
https://mailarchive.ietf.org/arch/msg/spring/VxWwLVXBD0gRbUb4nD_NY6lE-MI/
>=20
> [WGLC-POST] =
https://mailarchive.ietf.org/arch/msg/spring/egaddcV_LVAnJwHFEy98crx9LFg/
>=20
> [WRITEUP] =
https://datatracker.ietf.org/doc/draft-ietf-spring-srv6-network-programmin=
g/shepherdwriteup/
>=20
> [WRITEUP-2] =
https://mailarchive.ietf.org/arch/msg/spring/tSWyFOVaKDz2OyLzzckjWhvxE5U/
>=20
>=20
> Yours faithfully,
> --=20
> Fernando Gont
> SI6 Networks
> e-mail: fgont@si6networks.com
> PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492
>=20
>=20
>=20
>=20


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To: IETF Chair <chair@ietf.org>, Andrew Alston <Andrew.Alston@liquidtelecom.com>, Sander Steffann <sander@steffann.nl>
Cc: "spring@ietf.org" <spring@ietf.org>, "6man@ietf.org" <6man@ietf.org>, IESG <iesg@ietf.org>, "ietf@ietf.org" <ietf@ietf.org>
References: <66655d5e-0a81-3b9c-0cd6-127ccc371aca@si6networks.com> <CA577112-6A87-42E6-99C2-CF662E8CB9E9@ietf.org>
From: Fernando Gont <fgont@si6networks.com>
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Date: Wed, 3 Jun 2020 02:16:10 -0300
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Subject: Re: [spring] Appeal to the IESG re WGLC of draft-ietf-spring-srv6-network-programming
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Dear IESG,

Please find my responses in-line....

On 2/6/20 21:44, IETF Chair wrote:
> Dear Fernando, Andrew, and Sander:
> 
> The IESG has reviewed your appeal to the declaration of WG consensus
> to progress draft-ietf-spring-srv6-network-programming.  Based on our
> review of the technical and process-related points presented, we do
> not believe there is a basis for returning the document to the SPRING
> WG for a second working group last call. 

To be quite honest, if the process with which this document has passed 
WGLC does not warrant that the document be returned to the WG, I must 
admit I have no idea whatsoever the conditions under which a document 
would be returned to a working group.

Specifically, the issues raised during WGLC were dismissed, WGLC 
consensus was declared, and WG participants were contacted off-list in 
the hopes of making them happy with the document. That, together with 
the Shepherd's write-up omitting virtually all such issues make for a 
perfect example of lack of transparency in the process.



> As detailed in RFC 2418 (IETF Working Group Guidelines and
> Procedures) [RFC 2418], working groups have a good amount of
> flexibility, including operational aspects related to how last calls
> are handled, up to and including whether a working group last call is
> needed or not.  It is common for documents that change as a result of
> reviews at different stages of the process to continue on the
> publication path without further rigorous discussion and approval by
> the whole WG.  This point is especially true when the changes are in
> line with previously identified WG consensus.

The consensus declared on Spring WG literally dismissed  the technical 
concerns raised on the appeal. So I'm not sure how you could possibly 
argue that the changes applied to the document are the result of WG 
consensus, when in fact it is evident that the raised issues were 
dismissed while judging WG consensus.



> Furthermore, the ability for a working group to reach consensus is
> not dependent on an absolute level of knowledge about relevant
> implementations or deployment details. Working groups come to
> conclusions based on the knowledge available in the group. The full
> IETF document publication process, including IETF Last Call and IESG
> Evaluation, aims to provide thorough review across all aspects of a
> protocol, its usage, and deployment.

I'm curious of how precious IETF cycles are spent when a WG decides to 
ship a document specifying a behavior (PSP) for which the authors 
rejected to provide a rationale.

Ironically, PSP seems to aim at nodes that are not able to ignore 
packets that contain a RH with a SegmentsLeft == 0, when RFC8200 itself 
requires that nodes be able to do so.



> In relation to procedural concern 1, our understanding of the process
> that occurred is that Martin Vigoureux, as Responsible AD, evaluated
> the WG last call consensus on this document because one co-chair was
> unavailable and the other co-chair is listed in the document as a
> contributor. Ideally every working group would be chaired by multiple
> chairs who are not also involved with active documents in the working
> group, or other documents related to them, but given the IETF’s
> voluntary participation this is not always feasible.

Did they ever try? I haven't seen a single email on the spring, 6man, or 
ietf@ lists asking for volunteers. -- other groups do so when in the 
need for such volunteers.



> The particularly
> contentious debates in the SPRING WG have made it extremely difficult
> to identify participants to fill chair and shepherd roles who are
> free of potential perceived conflicts and willing to manage the
> consensus process. Having the Responsible AD make the consensus call
> in the WG does not violate the IETF process and was a reasonable
> choice under the circumstances.

As noted in the Appeal, one of Spring WG co-chairs was the first to 
declare WG consensus to progress the document. Then consensus was later 
declared (again) by the AD.

The process doesn't seem to have enjoyed the most minimum sign of 
transparency.



> In relation to procedural concern 2, related to the WG not having
> enough time to review the changes included in
> draft-ietf-spring-srv6-network-programming-11, it is unfortunate that
> this version was published just hours before the consensus call
> [WGLC-O2].  Upon examination of the changes [diff-10-11], it is clear
> that the additional text is in line with the expressed rough
> consensus, and that it tries to address some of the technical issues
> pointed out in your appeal (more details below).

Is the established process that first comments are dismissed, then 
consensus is declared, and when it's clear that an Appeal is coming, the 
AD contacts folks that raised objections to try to make them happy with 
the I-D?

This seems to be backwards, to be honest.



> In relation to procedural concern 3, about the contents of the
> Shepherd's Writeup, we first want to reinforce that the objective of
> such writeup [RFC 4858] is to inform the Responsible Area Director,
> and the rest of the IESG, of any issues that they should be aware of
> prior to IESG Evaluation.  As such, the Writeup can change over time.
> We note that the current version [WRITEUP] talks about the rough
> nature of the discussion and does cover most of the technical points
> presented in this appeal.

The [WRITEUP] literally omits most of the major objections raised 
against this document.

Once again, that doesn't talk very well about the transparency of the 
process.




> In relation to technical point 1, the justification for the need of
> PSP, we have observed several attempts at explanation in the WG
> discussions. To pick just one example, the “SRv6 PSP use case” thread
> [PSP-USE-CASE] begins a discussion with an explanation of IP-tunnel
> capable nodes on the edge of an SR domain. 

A use-case is not a justification regarding why the behavior is needed 
in the first place.



> The 3rd paragraph of
> Section 4.16.1 in the latest version of the document captures some of
> when PSP might be used.

Ironically, the request for such clarification was dismissed by the 
co-chair when declaring WG Consensus. Yet, the text you mentioned was 
added, which does *not* justify the need for PSP, since nodes are 
required by RFC8200 to ignore RHs with a SegmentsLeft == 0.




> In relation to technical points 2 and 3, the claim that the PSP
> behavior (in Section 4.16.1 of the document) violates RFC 8200 is
> clearly the most significant issue presented.  The charter of the
> SPRING WG states it should avoid modification to existing data
> planes.  A strict literal reading of the text in RFC 8200 does not
> forbid the kind of extension header manipulation described in Section
> 4.16.1, and the latest version includes a statement to this effect.
> To be specific, the text from RFC 8200 that the draft relies upon is
> the explicit differentiation between a Destination Address and the
> “ultimate recipient” described in Section 3, and the use in Section 4
> of the phrase “identified in the Destination Address field of the
> IPv6 header“.  This text in RFC 8200 has been discussed in the 6man
> WG multiple times, including at the most recent 6man interim
> [6MAN-MINUTES].  The draft-ietf-6man-rfc2460bis consensus process
> resulted in the text in RFC 8200; contentious as interpretations of
> this text may yet be, the draft in question is not inconsistent with
> a strict literal reading, as noted by Suresh Krishnan (INT AD at the
> time) in the 3 mail archive links Martin Vigoureux included in his
> call of WG consensus [WGLC-02]. 

Do you think it talks about transparency of the process to dismiss this 
objection *before* the relevant erratum was formally processed by the 
INT AD?




> In relation to technical point 4, a more prescriptive SID format, the
> request [SID] was replied to on a different thread [SID-R].  However,
> some points remain unaddressed by the document and therefore need
> some discussion and clarification including the nature and extent of
> any restrictions on IPv6 addresses that may be SIDs under the format
> described in Section 3.1 (the LOC, FUNCT, and ARG portions of the
> IPv6 address).

Not just that. It would seem to me this document violates the IPv6 
addressing architecture itself (RFC4291).



[....]
> In relation to technical point 5, the deployability of SIDs as
> related to their address size, the document does not list any
> requirement nor make general recommendation for the LOC prefix sizes
> that may be used by operators.  There is no example showing the use
> of a /40 LOC prefix.  One example provided in Section 3.2 shows two
> 128-bit SIDs, with up to 63 LOC prefix bits in common, and discusses
> routing in the network based on /64s.  Some discussion or, at a
> minimum, illustrative examples are needed.

I'm curious how a WG can ship a document without this basic analysis 
that is crucial for the deployability of this specification.




> In relation to technical point 1, the 3rd paragraph of Section 4.16.1
> in the latest version of the document provides some description of
> when PSP might be used. 

A description of when something could be used is not a justification for 
specifying the behavior.

Apparently, the motivation for PSP is to accommodate nodes that 
deliberately violate RFC8200 by being unable to skip RHs with 
SegmentsLeft == 0.


Note: I fail to see your analysis regarding technical objection #3: Your 
analysis focuses on RFC8200 (the focus of technical objection #2), but 
doesn't even mention RFC8754 (the relevant RFC for technical objection #3).

For the sake of transparency, while I haven't talked to my fellow 
Appellants about your response, I for one plan to Appeal to the IAB to 
resolve this issue. That said, I'd appreciate your response to the 
comments made above.

Thanks,
-- 
Fernando Gont
SI6 Networks
e-mail: fgont@si6networks.com
PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492





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To: Fernando Gont <fgont@si6networks.com>
Cc: "ietf@ietf.org" <ietf@ietf.org>, "6man@ietf.org" <6man@ietf.org>, IESG <iesg@ietf.org>,  "spring@ietf.org" <spring@ietf.org>, IETF Chair <chair@ietf.org>, Sander Steffann <sander@steffann.nl>,  Andrew Alston <andrew.alston@liquidtelecom.com>
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Subject: Re: [spring] Appeal to the IESG re WGLC of draft-ietf-spring-srv6-network-programming
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On June 3, 2020 at 1:16:48 AM, Fernando Gont wrote:


Fernando:

Hi! =C2=A0How are you?


...
> Note: I fail to see your analysis regarding technical objection #3: Your
> analysis focuses on RFC8200 (the focus of technical objection #2), but
> doesn't even mention RFC8754 (the relevant RFC for technical objection #3=
).

In relation to technical point 3, the concern you pointed at [SR-V]
was resolved in draft-ietf-spring-srv6-network-programming-12
[diff11-12] with text suggested by Brian Carpenter [SR-VA] on the same
thread. =C2=A0Given that the resolution is also related to the
interpretation of RFC 8200 we decided to group the responses. =C2=A0We
should have mentioned this fact before.


> For the sake of transparency, while I haven't talked to my fellow
> Appellants about your response, I for one plan to Appeal to the IAB to
> resolve this issue. That said, I'd appreciate your response to the
> comments made above.

Except for the clarification above, it is not the intent of the IESG
to reply to your other comments at this time. We have already provided
carefully considered responses to all points raised in your appeal. We
do not believe that continuing the discussion will be conducive to a
faster resolution or lead to a different outcome.


Take care!

Alvaro - for the IESG



[SR-V] https://mailarchive.ietf.org/arch/msg/spring/Xrcclo0s4pnug9upG9rUinY=
Mv1I/

[diff11-12] https://www.ietf.org/rfcdiff?url1=3Ddraft-ietf-spring-srv6-netw=
ork-programming-11&url2=3Ddraft-ietf-spring-srv6-network-programming-12

[SR-VA] https://mailarchive.ietf.org/arch/msg/spring/QVcsNS_XfRA927S3piCJ4S=
DYY3k/


From nobody Wed Jun  3 21:33:56 2020
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To: Alvaro Retana <aretana.ietf@gmail.com>
Cc: "ietf@ietf.org" <ietf@ietf.org>, "6man@ietf.org" <6man@ietf.org>, IESG <iesg@ietf.org>, "spring@ietf.org" <spring@ietf.org>, IETF Chair <chair@ietf.org>, Sander Steffann <sander@steffann.nl>, Andrew Alston <andrew.alston@liquidtelecom.com>
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From: Fernando Gont <fgont@si6networks.com>
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Subject: Re: [spring] Appeal to the IESG re WGLC of draft-ietf-spring-srv6-network-programming
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Hello, Alvaro,

On 3/6/20 15:29, Alvaro Retana wrote:
> On June 3, 2020 at 1:16:48 AM, Fernando Gont wrote:
[....]> ...
>> Note: I fail to see your analysis regarding technical objection #3: Your
>> analysis focuses on RFC8200 (the focus of technical objection #2), but
>> doesn't even mention RFC8754 (the relevant RFC for technical objection #3).
> 
> In relation to technical point 3, the concern you pointed at [SR-V]
> was resolved in draft-ietf-spring-srv6-network-programming-12
> [diff11-12] with text suggested by Brian Carpenter [SR-VA] on the same
> thread.  Given that the resolution is also related to the
> interpretation of RFC 8200 we decided to group the responses.  We
> should have mentioned this fact before.

I disagree. Technical point #2 is a different concern than technical 
point #3. That's the reason why they have been presented to you as two 
different technical points.

So, I don't think your response to technical point #2 answers the 
concerns in technical point #3.



>> For the sake of transparency, while I haven't talked to my fellow
>> Appellants about your response, I for one plan to Appeal to the IAB to
>> resolve this issue. That said, I'd appreciate your response to the
>> comments made above.
> 
> Except for the clarification above, it is not the intent of the IESG
> to reply to your other comments at this time. We have already provided
> carefully considered responses to all points raised in your appeal. 

FWIW, my take is that many of them have just been ignored. But so be it.

Thanks for your time,
-- 
Fernando Gont
SI6 Networks
e-mail: fgont@si6networks.com
PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492





From nobody Thu Jun  4 07:12:58 2020
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From: Alexander Vainshtein <Alexander.Vainshtein@ecitele.com>
To: "rtg-dir@ietf.org" <rtg-dir@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "lsr@ietf.org" <lsr@ietf.org>, "bess@ietf.org" <bess@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>, "rtg-bfd@ietf.org" <rtg-bfd@ietf.org>, "CCAMP@ietf.org" <CCAMP@ietf.org>, "teas@ietf.org" <teas@ietf.org>, "bier@ietf.org" <bier@ietf.org>, "lsr@ietf.org" <lsr@ietf.org>, "pals@ietf.org" <pals@ietf.org>, "detnet@ietf.org" <detnet@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>, "nvo3@ietf.org" <nvo3@ietf.org>
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--_000_AM0PR03MB4499A03C46A28A22693EAA439D890AM0PR03MB4499eurp_
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Dear colleagues,
Following the acquisition of my employer - ECI Telecom, by Ribbon, startin=
g from 09-Jun-20 all the mails I will send to IETF will use alexander.vain=
shtein@rbbn.com<mailto:alexander.vainshtein@rbbn.com> as my address.

I will still be receiving emails addressed to alexander.vainshtein@ecitele=
.com<mailto:alexander.vainshtein@ecitele.com> (at least for the time being=
).

I will re-subscribe to all the IETF mailing lists using my new email once =
it becomes operational.

Regards, and apologies for possible inconvenience,
Sasha

Office: +972-39266302
Cell:      +972-549266302
Email:   Alexander.Vainshtein@ecitele.com


__________________________________________________________________________=
_

This e-mail message is intended for the recipient only and contains inform=
ation which is=20
CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have rece=
ived this=20
transmission in error, please inform us by e-mail, phone or fax, and then =
delete the original=20
and all copies thereof.
__________________________________________________________________________=
_
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<p class=3D"MsoNormal">Dear colleagues,<o:p></o:p></p>
<p class=3D"MsoNormal">Following the acquisition of my employer &#8211; EC=
I Telecom, by Ribbon, starting from 09-Jun-20 all the mails I will send to=
 IETF will use
<a href=3D"mailto:alexander.vainshtein@rbbn.com">alexander.vainshtein@rbbn=
.com</a> as my address.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I will still be receiving emails addressed to <a hr=
ef=3D"mailto:alexander.vainshtein@ecitele.com">
alexander.vainshtein@ecitele.com</a> (at least for the time being).<o:p></=
o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I will re-subscribe to all the IETF mailing lists u=
sing my new email once it becomes operational.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Regards, and apologies for possible inconvenience,<=
o:p></o:p></p>
<p class=3D"MsoNormal">Sasha <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Office: &#43;972-39266302<o:p></o:p></p>
<p class=3D"MsoNormal">Cell:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#43;972-549266=
302<o:p></o:p></p>
<p class=3D"MsoNormal">Email:&nbsp;&nbsp; Alexander.Vainshtein@ecitele.com=
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<br clear=3D"both">
__________________________________________________________________________=
_<BR>
<BR>
This e-mail message is intended for the recipient only and contains inform=
ation which is <BR>
CONFIDENTIAL and which may be proprietary to ECI Telecom. If you have rece=
ived this <BR>
transmission in error, please inform us by e-mail, phone or fax, and then =
delete the original <BR>
and all copies thereof.<BR>
__________________________________________________________________________=
_<BR>
</body>
</html>

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Date: Fri, 12 Jun 2020 09:59:34 -0700
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Subject: [spring] spring - New Meeting Session Request for IETF 108
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A new meeting session request has just been submitted by Bruno Decraene, a Chair of the spring working group.


---------------------------------------------------------
Working Group Name: Source Packet Routing in Networking
Area Name: Routing Area
Session Requester: Bruno Decraene


Number of Sessions: 1
Length of Session(s):  100 Minutes
Number of Attendees: 140
Conflicts to Avoid: 
 Chair Conflict: sfc lisp
 Technology Overlap: 6man mpls lsr idr pce rtgwg teas
 Key Participant Conflict: v6ops opsec





People who must be present:
  Bruno Decraene
  Martin Vigoureux

Resources Requested:

Special Requests:
  
---------------------------------------------------------



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To: "Zafar Ali (zali)" <zali=40cisco.com@dmarc.ietf.org>, 6man <6man@ietf.org>
Cc: "spring@ietf.org" <spring@ietf.org>
References: <159197922210.4807.2193188335198215906@ietfa.amsl.com> <7BD229A7-FB1D-43D5-B285-0B32FAFD029D@cisco.com>
From: "Joel M. Halpern" <jmh@joelhalpern.com>
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Date: Fri, 12 Jun 2020 13:13:14 -0400
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Subject: Re: [spring] FW: New Version Notification for draft-ietf-6man-spring-srv6-oam-05.txt
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Thank you Zafar.  As we discussed, these changes address my concerns.
Yours,
Joel

On 6/12/2020 12:35 PM, Zafar Ali (zali) wrote:
> Dear WG:
> 
> We have just posted 
> https://www.ietf.org/internet-drafts/draft-ietf-6man-spring-srv6-oam-05.txt. 
> 
> 
> This version addresses comments received during the interim meeting and 
> all outstanding comments.
> 
> Since the interim meeting:
> 
>   * The authors had WebEx calls with Joel M. Halpern and Bob Hinden.
>   * The authors also had a WebEx with Greg Mirsky.
>   * During these calls, the author went over their comments and walked
>     over how the proposed diffs address their feedback. 
> 
> The authors thank Joel, Greg, Loa, Bob and the WG for all the comments.
> 
> The authors believe that the diffs address their and other outstanding 
> comments from the WG.
> 
> How the diffs address the comments is detailed in the following:
> 
>   * Joel Halpern comment from the interim meeting,
>     https://datatracker.ietf.org/doc/minutes-interim-2020-6man-01-202003310730/.
>     Specifically, "Joel Halpern: You said you added illustrations to
>     address my comments. You did add illustrations, but the description
>     does not address my comment. The document needs to address what the
>     router actually has to do when the O bit is set. The text does not
>     describe this."
>       o Section 2.1.1. O-flag Processing has been enhanced to address
>         Joel's comments. It has been reviewed with Joel and Bob during
>         the WebEx meeting with them. The author believes the changes
>         address Joel's comments. 
>   * Greg Mirsky's comment from the interim meeting,
>     https://datatracker.ietf.org/doc/minutes-interim-2020-6man-01-202003310730/.
>     Specifically, "Greg Mirsky: I did not read the latest version, so I
>     haven't seen the latest changes. I think your interpretation of RFC
>     7799 is incorrect. O-bit, according to the definition or active,
>     passive, and "in-between." OAM would be an example of the hybrid OAM
>     method. I also think what you are trying to achieve with O-bit is
>     achievable with current iOAM (in-situ OAM). "
>       o The terminology now uses the hybrid OAM mechanism. Section
>         2.1.1. (O-flag Processing) Section 3.3 (A Controller-Based
>         Hybrid OAM Using O-flag) has been enhanced to address Greg's
>         comments. The diffs have been discussed with Greg during the
>         WebEx meeting with them. The author believes the changes address
>         Greg's comments. 
>   * There was an outstanding comment from Greg in
>     https://mailarchive.ietf.org/arch/msg/ipv6/esi3EWdjWMEu9zSP-pjzxI2gEmw/.
>     Specifically, Greg asked: Isn't using assigned by IANA port number
>     sufficient to identify active IP OAM packets? Wouldn't the same be
>     applicable in SRv6 OAM? Removed END.OP SID and the associated
>     changes in the illustration section to address this comment.
>   * The new version addresses pending comments from Loa Anderson by a
>     rewrite of the introduction and abstract. All other comments from
>     https://mailarchive.ietf.org/arch/msg/ipv6/LKsWbnA0aWYem4AbHWrUURNd-3c/ has
>     been already addressed.
>   * Migrated addresses used for illustration to IPv6 addresses reserved
>     for documentation.
>   * Fixed .xml file, as per Bob’s comment.
>   * Fixed IDnit issues.
>   * Misc. editorial changes including illustration enhancement in 3.4
>     (Monitoring of SRv6 Paths)
> 
> Thanks
> 
> Regards … Zafar (on behalf of the co-authors and contributors)
> 
> *From: *"internet-drafts@ietf.org" <internet-drafts@ietf.org>
> *Date: *Friday, June 12, 2020 at 12:27 PM
> *To: *Daniel Voyer <daniel.voyer@bell.ca>, Mach Chen 
> <mach.chen@huawei.com>, "Clarence Filsfils (cfilsfil)" 
> <cfilsfil@cisco.com>, Satoru Matsushima 
> <satoru.matsushima@g.softbank.co.jp>, "Zafar Ali (zali)" <zali@cisco.com>
> *Subject: *New Version Notification for 
> draft-ietf-6man-spring-srv6-oam-05.txt
> 
> A new version of I-D, draft-ietf-6man-spring-srv6-oam-05.txt
> 
> has been successfully submitted by Zafar Ali and posted to the
> 
> IETF repository.
> 
> Name:draft-ietf-6man-spring-srv6-oam
> 
> Revision:05
> 
> Title:Operations, Administration, and Maintenance (OAM) in Segment 
> Routing Networks with IPv6 Data plane (SRv6)
> 
> Document date:2020-06-12
> 
> Group:6man
> 
> Pages:20
> 
> URL: 
> https://www.ietf.org/internet-drafts/draft-ietf-6man-spring-srv6-oam-05.txt
> 
> Status: https://datatracker.ietf.org/doc/draft-ietf-6man-spring-srv6-oam/
> 
> Htmlized: https://tools.ietf.org/html/draft-ietf-6man-spring-srv6-oam-05
> 
> Htmlized: 
> https://datatracker.ietf.org/doc/html/draft-ietf-6man-spring-srv6-oam
> 
> Diff: https://www.ietf.org/rfcdiff?url2=draft-ietf-6man-spring-srv6-oam-05
> 
> Abstract:
> 
>     This document describes how the existing IPv6 OAM mechanisms can be
> 
>     used in an SRv6 network.  The document also introduces enhancements
> 
>     for controller-based OAM mechanisms for SRv6 networks.
> 
> Please note that it may take a couple of minutes from the time of submission
> 
> until the htmlized version and diff are available at tools.ietf.org.
> 
> The IETF Secretariat
> 
> 
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
> 


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WG,

Rob had decided to step down as chair some time ago. There hasn't been 
any formal communication on that so I'd like, first, to thank Rob for 
his work and dedication to the group. Thank you very much Rob.

Since that time, I have been actively looking for one (or two) person(s) 
to replace him. This has proven to be a very challenging endeavour!

But it has finally came to an end.

I am pleased to inform you that I have appointed Jim Guichard and Joel 
Halpern as co-chairs of SPRING WG, alongside Bruno.
Thank you Jim, Thank you Joel, and thank you Bruno.


Martin
as AD for SPRING


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From: Ron Bonica <rbonica@juniper.net>
To: Martin Vigoureux <martin.vigoureux@nokia.com>, "spring@ietf.org" <spring@ietf.org>
CC: "6man@ietf.org" <6man@ietf.org>, "int-ads@ietf.org" <int-ads@ietf.org>, "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "<rtg-ads@ietf.org>" <rtg-ads@ietf.org>, Rob Shakir <robjs@google.com>, James Guichard <james.n.guichard@futurewei.com>, "Joel M. Halpern" <jmh@joelhalpern.com>
Thread-Topic: [spring] Leadership change
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Date: Sun, 14 Jun 2020 20:33:08 +0000
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Subject: Re: [spring] Leadership change
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Congratulations to Jim and Joel. And thanks to Rob for his service.

                                                                  Ron



Juniper Business Use Only

-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of Martin Vigoureux
Sent: Sunday, June 14, 2020 4:25 PM
To: spring@ietf.org
Cc: 6man@ietf.org; int-ads@ietf.org; bruno.decraene@orange.com; <rtg-ads@ie=
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james.n.guichard@futurewei.com>; Joel M. Halpern <jmh@joelhalpern.com>
Subject: [spring] Leadership change

[External Email. Be cautious of content]


WG,

Rob had decided to step down as chair some time ago. There hasn't been any =
formal communication on that so I'd like, first, to thank Rob for his work =
and dedication to the group. Thank you very much Rob.

Since that time, I have been actively looking for one (or two) person(s) to=
 replace him. This has proven to be a very challenging endeavour!

But it has finally came to an end.

I am pleased to inform you that I have appointed Jim Guichard and Joel Halp=
ern as co-chairs of SPRING WG, alongside Bruno.
Thank you Jim, Thank you Joel, and thank you Bruno.


Martin
as AD for SPRING

_______________________________________________
spring mailing list
spring@ietf.org
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Date: Sun, 14 Jun 2020 14:00:05 -0700
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: "=?utf-8?Q?spring=40ietf.org?=" <spring@ietf.org>, Martin Vigoureux <martin.vigoureux@nokia.com>
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Thanks Rob!
Welcome Jim and Joel!

Cheers,
Jeff
On Jun 14, 2020, 1:25 PM -0700, Martin Vigoureux <martin.vigoureux@nokia.com>, wrote:
> WG,
>
> Rob had decided to step down as chair some time ago. There hasn't been
> any formal communication on that so I'd like, first, to thank Rob for
> his work and dedication to the group. Thank you very much Rob.
>
> Since that time, I have been actively looking for one (or two) person(s)
> to replace him. This has proven to be a very challenging endeavour!
>
> But it has finally came to an end.
>
> I am pleased to inform you that I have appointed Jim Guichard and Joel
> Halpern as co-chairs of SPRING WG, alongside Bruno.
> Thank you Jim, Thank you Joel, and thank you Bruno.
>
>
> Martin
> as AD for SPRING
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring

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<html xmlns=3D=22http://www.w3.org/1999/xhtml=22>
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<title></title>
</head>
<body>
<div name=3D=22messageBodySection=22>
<div dir=3D=22auto=22>Thanks Rob=21<br />
Welcome Jim and Joel=21</div>
</div>
<div name=3D=22messageSignatureSection=22><br />
<div class=3D=22match=46ont=22>Cheers,
<div>Jeff</div>
</div>
</div>
<div name=3D=22messageReplySection=22>On Jun 14, 2020, 1:25 PM -0700, Mar=
tin Vigoureux &lt;martin.vigoureux=40nokia.com&gt;, wrote:<br />
<blockquote type=3D=22cite=22 style=3D=22border-left-color: grey; border-=
left-width: thin; border-left-style: solid; margin: 5px 5px;padding-left:=
 10px;=22>WG,<br />
<br />
Rob had decided to step down as chair some time ago. There hasn't been<br=
 />
any formal communication on that so I'd like, first, to thank Rob for<br =
/>
his work and dedication to the group. Thank you very much Rob.<br />
<br />
Since that time, I have been actively looking for one (or two) person(s)<=
br />
to replace him. This has proven to be a very challenging endeavour=21<br =
/>
<br />
But it has finally came to an end.<br />
<br />
I am pleased to inform you that I have appointed Jim Guichard and Joel<br=
 />
Halpern as co-chairs of SPRING WG, alongside Bruno.<br />
Thank you Jim, Thank you Joel, and thank you Bruno.<br />
<br />
<br />
Martin<br />
as AD for SPRING<br />
<br />
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
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spring mailing list<br />
spring=40ietf.org<br />
https://www.ietf.org/mailman/listinfo/spring<br /></blockquote>
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From: Victor Kuarsingh <victor@jvknet.com>
Date: Sun, 14 Jun 2020 17:24:40 -0400
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To: Martin Vigoureux <martin.vigoureux@nokia.com>
Cc: James Guichard <james.n.guichard@futurewei.com>, "Joel M. Halpern" <jmh@joelhalpern.com>, Rob Shakir <robjs@google.com>, "bruno.decraene@orange.com" <bruno.decraene@orange.com>,  "spring@ietf.org" <spring@ietf.org>
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Congrats and thank you.

Regards,

Victor K

On Sun, Jun 14, 2020 at 16:25 Martin Vigoureux <martin.vigoureux@nokia.com>
wrote:

> WG,
>
> Rob had decided to step down as chair some time ago. There hasn't been
> any formal communication on that so I'd like, first, to thank Rob for
> his work and dedication to the group. Thank you very much Rob.
>
> Since that time, I have been actively looking for one (or two) person(s)
> to replace him. This has proven to be a very challenging endeavour!
>
> But it has finally came to an end.
>
> I am pleased to inform you that I have appointed Jim Guichard and Joel
> Halpern as co-chairs of SPRING WG, alongside Bruno.
> Thank you Jim, Thank you Joel, and thank you Bruno.
>
>
> Martin
> as AD for SPRING
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>

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<div><div dir=3D"auto">Congrats and thank you.</div></div><div dir=3D"auto"=
><br></div><div dir=3D"auto">Regards,</div><div dir=3D"auto"><br></div><div=
 dir=3D"auto">Victor K</div><div><br><div class=3D"gmail_quote"><div dir=3D=
"ltr" class=3D"gmail_attr">On Sun, Jun 14, 2020 at 16:25 Martin Vigoureux &=
lt;<a href=3D"mailto:martin.vigoureux@nokia.com">martin.vigoureux@nokia.com=
</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:=
0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">WG,<br>
<br>
Rob had decided to step down as chair some time ago. There hasn&#39;t been =
<br>
any formal communication on that so I&#39;d like, first, to thank Rob for <=
br>
his work and dedication to the group. Thank you very much Rob.<br>
<br>
Since that time, I have been actively looking for one (or two) person(s) <b=
r>
to replace him. This has proven to be a very challenging endeavour!<br>
<br>
But it has finally came to an end.<br>
<br>
I am pleased to inform you that I have appointed Jim Guichard and Joel <br>
Halpern as co-chairs of SPRING WG, alongside Bruno.<br>
Thank you Jim, Thank you Joel, and thank you Bruno.<br>
<br>
<br>
Martin<br>
as AD for SPRING<br>
<br>
_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/listinfo/spring</a><br>
</blockquote></div></div>

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From: Tianran Zhou <zhoutianran@huawei.com>
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Welcome Jim and Joel!

Cheers,
Tianran

-----Original Message-----
From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of Ron Bonica
Sent: Monday, June 15, 2020 4:33 AM
To: Martin Vigoureux <martin.vigoureux@nokia.com>; spring@ietf.org
Cc: 6man@ietf.org; int-ads@ietf.org; <rtg-ads@ietf.org> <rtg-ads@ietf.org>;=
 Rob Shakir <robjs@google.com>
Subject: RE: [spring] Leadership change

Congratulations to Jim and Joel. And thanks to Rob for his service.

                                                                  Ron



Juniper Business Use Only

-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of Martin Vigoureux
Sent: Sunday, June 14, 2020 4:25 PM
To: spring@ietf.org
Cc: 6man@ietf.org; int-ads@ietf.org; bruno.decraene@orange.com; <rtg-ads@ie=
tf.org> <rtg-ads@ietf.org>; Rob Shakir <robjs@google.com>; James Guichard <=
james.n.guichard@futurewei.com>; Joel M. Halpern <jmh@joelhalpern.com>
Subject: [spring] Leadership change

[External Email. Be cautious of content]


WG,

Rob had decided to step down as chair some time ago. There hasn't been any =
formal communication on that so I'd like, first, to thank Rob for his work =
and dedication to the group. Thank you very much Rob.

Since that time, I have been actively looking for one (or two) person(s) to=
 replace him. This has proven to be a very challenging endeavour!

But it has finally came to an end.

I am pleased to inform you that I have appointed Jim Guichard and Joel Halp=
ern as co-chairs of SPRING WG, alongside Bruno.
Thank you Jim, Thank you Joel, and thank you Bruno.


Martin
as AD for SPRING

_______________________________________________
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Thank you, Martin!

Thank you very much for your service, Rob!=20

Welcome Jim and Joel! Congrats!=20

Best Regards,
Shuping


-----Original Message-----
From: spring [mailto:spring-bounces@ietf.org] On Behalf Of Martin Vigoureux
Sent: Monday, June 15, 2020 4:25 AM
To: spring@ietf.org
Cc: 6man@ietf.org; int-ads@ietf.org; bruno.decraene@orange.com; <rtg-ads@ie=
tf.org> <rtg-ads@ietf.org>; Rob Shakir <robjs@google.com>; James Guichard <=
james.n.guichard@futurewei.com>; Joel M. Halpern <jmh@joelhalpern.com>
Subject: [spring] Leadership change

WG,

Rob had decided to step down as chair some time ago. There hasn't been any =
formal communication on that so I'd like, first, to thank Rob for his work =
and dedication to the group. Thank you very much Rob.

Since that time, I have been actively looking for one (or two) person(s) to=
 replace him. This has proven to be a very challenging endeavour!

But it has finally came to an end.

I am pleased to inform you that I have appointed Jim Guichard and Joel Halp=
ern as co-chairs of SPRING WG, alongside Bruno.
Thank you Jim, Thank you Joel, and thank you Bruno.


Martin
as AD for SPRING

_______________________________________________
spring mailing list
spring@ietf.org
https://www.ietf.org/mailman/listinfo/spring


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From: "Chengli (Cheng Li)" <c.l@huawei.com>
To: Martin Vigoureux <martin.vigoureux@nokia.com>, "spring@ietf.org" <spring@ietf.org>
CC: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, Rob Shakir <robjs@google.com>, James Guichard <james.n.guichard@futurewei.com>, "Joel M. Halpern" <jmh@joelhalpern.com>
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Good news to have two  new co-chairs, since there are so many works in SPRI=
NG.

Welcome Jim and Joel!  Also, many thanks to Rob for your work and contribut=
ions!

Respect!
Cheng





-----Original Message-----
From: spring [mailto:spring-bounces@ietf.org] On Behalf Of Martin Vigoureux
Sent: Monday, June 15, 2020 4:25 AM
To: spring@ietf.org
Cc: 6man@ietf.org; int-ads@ietf.org; bruno.decraene@orange.com; <rtg-ads@ie=
tf.org> <rtg-ads@ietf.org>; Rob Shakir <robjs@google.com>; James Guichard <=
james.n.guichard@futurewei.com>; Joel M. Halpern <jmh@joelhalpern.com>
Subject: [spring] Leadership change

WG,

Rob had decided to step down as chair some time ago. There hasn't been any =
formal communication on that so I'd like, first, to thank Rob for his work =
and dedication to the group. Thank you very much Rob.

Since that time, I have been actively looking for one (or two) person(s) to=
 replace him. This has proven to be a very challenging endeavour!

But it has finally came to an end.

I am pleased to inform you that I have appointed Jim Guichard and Joel Halp=
ern as co-chairs of SPRING WG, alongside Bruno.
Thank you Jim, Thank you Joel, and thank you Bruno.


Martin
as AD for SPRING

_______________________________________________
spring mailing list
spring@ietf.org
https://www.ietf.org/mailman/listinfo/spring


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From: "Aijun Wang" <wangaj3@chinatelecom.cn>
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Subject: [spring] About the upper layer header processing in RFC8754(SRH)
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Hi, Folks:

RFC8754(SRH) section
4.3.1.2(https://tools.ietf.org/html/rfc8754#section-4.3.1.2) describes the
process of upper layer header as the followings:

IF (Upper-layer Header is IPv4 or IPv6) and

       local configuration permits {

     Perform IPv6 decapsulation

     Resubmit the decapsulated packet to the IPv4 or IPv6 module

   }

   ELSE {

   ..

}

And in network programming draft section
9.1(https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-pro
gramming-15#section-9.1), one new Ethernet Next Header Type(143) is
proposed.

 

Although the detail process of this new next header are described in the
network program draft,  does it need to update the section 4.3.1.2 of
RFC8754 to reflect the process of new header type(143)? 

 

Best Regards

 

Aijun Wang

China Telecom

 


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<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DZH-CN =
link=3D"#0563C1" vlink=3D"#954F72" =
style=3D'text-justify-trim:punctuation'><div class=3DWordSection1><p =
class=3DMsoNormal><span lang=3DEN-US>Hi, Folks:<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US>RFC8754(SRH) section 4.3.1.2(<a =
href=3D"https://tools.ietf.org/html/rfc8754#section-4.3.1.2">https://tool=
s.ietf.org/html/rfc8754#section-4.3.1.2</a>) describes the process of =
upper layer header as the followings:<o:p></o:p></span></p><p =
class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>IF =
(Upper-layer Header is IPv4 or IPv6) and<o:p></o:p></span></p><p =
class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; local configuration permits =
{<o:p></o:p></span></p><p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&nbsp;&nbsp;&nb=
sp;&nbsp; Perform IPv6 decapsulation<o:p></o:p></span></p><p =
class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&nbsp;&nbsp;&nb=
sp;&nbsp; Resubmit the decapsulated packet to the IPv4 or IPv6 =
module<o:p></o:p></span></p><p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&nbsp;&nbsp; =
}<o:p></o:p></span></p><p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&nbsp;&nbsp; =
ELSE {<o:p></o:p></span></p><p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&nbsp;&nbsp; =
&#8230;&#8230;<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-indent:42.0pt'><span =
lang=3DEN-US>}<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>And in network programming draft section 9.1(<a =
href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-netw=
ork-programming-15#section-9.1">https://datatracker.ietf.org/doc/html/dra=
ft-ietf-spring-srv6-network-programming-15#section-9.1</a>), one new =
Ethernet Next Header Type(143) is proposed.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US>Although the detail process of this =
new next header are described in the network program draft, &nbsp;does =
it need to update the section 4.3.1.2 of RFC8754 to reflect the process =
of new header type(143)? <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US>Best =
Regards<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>Aijun Wang<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>China Telecom<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p></div></body></html>
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Hi, Folks:

 

RFC8754(SRH) section
4.3.1.2(https://tools.ietf.org/html/rfc8754#section-4.3.1.2) describes the
process of upper layer header as the followings:

IF (Upper-layer Header is IPv4 or IPv6) and

       local configuration permits {

     Perform IPv6 decapsulation

     Resubmit the decapsulated packet to the IPv4 or IPv6 module

   }

   ELSE {

   ..

}

And in network programming draft section
9.1(https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-pro
gramming-15#section-9.1), one new Ethernet Next Header Type(143) is
proposed.

 

Although the detail process of this new next header are described in the
network program draft,  does it need to update the section 4.3.1.2 of
RFC8754 to reflect the process of new header type(143)? 

 

Best Regards

 

Aijun Wang

China Telecom

 


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link=3D"#0563C1" vlink=3D"#954F72" =
style=3D'text-justify-trim:punctuation'><div class=3DWordSection1><p =
class=3DMsoNormal><span lang=3DEN-US>Hi, Folks:<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US>RFC8754(SRH) section 4.3.1.2(<a =
href=3D"https://tools.ietf.org/html/rfc8754#section-4.3.1.2">https://tool=
s.ietf.org/html/rfc8754#section-4.3.1.2</a>) describes the process of =
upper layer header as the followings:<o:p></o:p></span></p><p =
class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>IF =
(Upper-layer Header is IPv4 or IPv6) and<o:p></o:p></span></p><p =
class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; local configuration permits =
{<o:p></o:p></span></p><p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&nbsp;&nbsp;&nb=
sp;&nbsp; Perform IPv6 decapsulation<o:p></o:p></span></p><p =
class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&nbsp;&nbsp;&nb=
sp;&nbsp; Resubmit the decapsulated packet to the IPv4 or IPv6 =
module<o:p></o:p></span></p><p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&nbsp;&nbsp; =
}<o:p></o:p></span></p><p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&nbsp;&nbsp; =
ELSE {<o:p></o:p></span></p><p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&nbsp;&nbsp; =
</span><span =
style=3D'font-size:10.0pt;font-family:SimSun;color:black'>&#8230;&#8230;<=
span lang=3DEN-US><o:p></o:p></span></span></p><p class=3DMsoNormal =
style=3D'text-indent:42.0pt'><span =
lang=3DEN-US>}<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>And in network programming draft section 9.1(<a =
href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-netw=
ork-programming-15#section-9.1">https://datatracker.ietf.org/doc/html/dra=
ft-ietf-spring-srv6-network-programming-15#section-9.1</a>), one new =
Ethernet Next Header Type(143) is proposed.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US>Although the detail process of this =
new next header are described in the network program draft, &nbsp;does =
it need to update the section 4.3.1.2 of RFC8754 to reflect the process =
of new header type(143)? <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US>Best =
Regards<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>Aijun Wang<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>China Telecom<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p></div></body></html>
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Sun, 14 Jun 2020 19:18:27 -0700
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To: Martin Vigoureux <martin.vigoureux@nokia.com>
Cc: "spring@ietf.org" <spring@ietf.org>, "6man@ietf.org" <6man@ietf.org>,  "int-ads@ietf.org" <int-ads@ietf.org>, "bruno.decraene@orange.com" <bruno.decraene@orange.com>,  "<rtg-ads@ietf.org>" <rtg-ads@ietf.org>, Rob Shakir <robjs@google.com>,  James Guichard <james.n.guichard@futurewei.com>, "Joel M. Halpern" <jmh@joelhalpern.com>
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Thank you, Rob,
Thanks to Jim and Joel for taking on the additional work and
responsibilities.
Thanks to Bruno for his continued commitment to the WG.

Regards,
Greg

On Sun, Jun 14, 2020 at 1:25 PM Martin Vigoureux <martin.vigoureux@nokia.com>
wrote:

> WG,
>
> Rob had decided to step down as chair some time ago. There hasn't been
> any formal communication on that so I'd like, first, to thank Rob for
> his work and dedication to the group. Thank you very much Rob.
>
> Since that time, I have been actively looking for one (or two) person(s)
> to replace him. This has proven to be a very challenging endeavour!
>
> But it has finally came to an end.
>
> I am pleased to inform you that I have appointed Jim Guichard and Joel
> Halpern as co-chairs of SPRING WG, alongside Bruno.
> Thank you Jim, Thank you Joel, and thank you Bruno.
>
>
> Martin
> as AD for SPRING
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>

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<div dir=3D"ltr">Thank you, Rob,<div>Thanks to Jim and Joel for taking on t=
he additional work and responsibilities.</div><div>Thanks to Bruno for his =
continued commitment to the WG.</div><div><br></div><div>Regards,</div><div=
>Greg</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"g=
mail_attr">On Sun, Jun 14, 2020 at 1:25 PM Martin Vigoureux &lt;<a href=3D"=
mailto:martin.vigoureux@nokia.com">martin.vigoureux@nokia.com</a>&gt; wrote=
:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.=
8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">WG,<br>
<br>
Rob had decided to step down as chair some time ago. There hasn&#39;t been =
<br>
any formal communication on that so I&#39;d like, first, to thank Rob for <=
br>
his work and dedication to the group. Thank you very much Rob.<br>
<br>
Since that time, I have been actively looking for one (or two) person(s) <b=
r>
to replace him. This has proven to be a very challenging endeavour!<br>
<br>
But it has finally came to an end.<br>
<br>
I am pleased to inform you that I have appointed Jim Guichard and Joel <br>
Halpern as co-chairs of SPRING WG, alongside Bruno.<br>
Thank you Jim, Thank you Joel, and thank you Bruno.<br>
<br>
<br>
Martin<br>
as AD for SPRING<br>
<br>
_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/listinfo/spring</a><br>
</blockquote></div>

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To: Aijun Wang <wangaj3@chinatelecom.cn>, "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: About the upper layer header processing in RFC8754(SRH)
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Hi Aijun,
Very good catch!
I think the 4.3.1.2 need to be updated !
I would like to propose some text (maybe later today) for RFC8754 4.3.1.2, =
as well as some other text in SRv6-PGM section 4.1 (and some related sectio=
ns) I have observed  about the Upper-layer processing for further discussio=
n.

Thanks
Jingrong


From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of Aijun Wang
Sent: Monday, June 15, 2020 10:14 AM
To: ipv6@ietf.org; spring@ietf.org
Subject: About the upper layer header processing in RFC8754(SRH)

Hi, Folks:
RFC8754(SRH) section 4.3.1.2(https://tools.ietf.org/html/rfc8754#section-4.=
3.1.2) describes the process of upper layer header as the followings:
IF (Upper-layer Header is IPv4 or IPv6) and
       local configuration permits {
     Perform IPv6 decapsulation
     Resubmit the decapsulated packet to the IPv4 or IPv6 module
   }
   ELSE {
   ......
}
And in network programming draft section 9.1(https://datatracker.ietf.org/d=
oc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1), one new=
 Ethernet Next Header Type(143) is proposed.

Although the detail process of this new next header are described in the ne=
twork program draft,  does it need to update the section 4.3.1.2 of RFC8754=
 to reflect the process of new header type(143)?

Best Regards

Aijun Wang
China Telecom


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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Hi Aijun,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Very good catch!
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">I think the 4.3.1.2 need to be updated =
!
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">I would like to propose some text (mayb=
e later today) for RFC8754 4.3.1.2, as well as some other text in SRv6-PGM =
section 4.1 (and some related sections) I have observed
 &nbsp;about the Upper-layer processing for further discussion.<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Thanks<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Jingrong<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span la=
ng=3D"EN-US" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans=
-serif">From:</span></b><span lang=3D"EN-US" style=3D"font-size:11.0pt;font=
-family:&quot;Calibri&quot;,sans-serif"> ipv6 [mailto:ipv6-bounces@ietf.org=
]
<b>On Behalf Of </b>Aijun Wang<br>
<b>Sent:</b> Monday, June 15, 2020 10:14 AM<br>
<b>To:</b> ipv6@ietf.org; spring@ietf.org<br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH)<o:p=
></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Hi, Folks:<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-US">RFC8754(SRH) section 4.3.1.2(<a=
 href=3D"https://tools.ietf.org/html/rfc8754#section-4.3.1.2">https://tools=
.ietf.org/html/rfc8754#section-4.3.1.2</a>) describes the process of upper =
layer header as the followings:<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">IF (Up=
per-layer Header is IPv4 or IPv6) and<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local configuration permits {<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp;&nbsp;&nbsp; Perform IPv6 decapsulation<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp;&nbsp;&nbsp; Resubmit the decapsulated packet to the IPv4 or IPv6 mod=
ule<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp; }<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp; ELSE {<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp;
</span><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&#82=
30;&#8230;<span lang=3D"EN-US"><o:p></o:p></span></span></p>
<p class=3D"MsoNormal" style=3D"text-indent:42.0pt"><span lang=3D"EN-US">}<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">And in network programming draf=
t section 9.1(<a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-s=
pring-srv6-network-programming-15#section-9.1">https://datatracker.ietf.org=
/doc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Although the detail process of =
this new next header are described in the network program draft, &nbsp;does=
 it need to update the section 4.3.1.2 of RFC8754 to reflect the process of=
 new header type(143)?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Best Regards<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Aijun Wang<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-US">China Telecom<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
</div>
</body>
</html>

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From nobody Mon Jun 15 01:02:50 2020
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From: Martin Horneffer <maho@lab.dtag.de>
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Thank you Martin, Rob, Jim and Joel!
Apparently chairing this wg is not an easy job. I greatly appreciate 
that you support/did/do it!

Best regards, Martin


Am 14.06.20 um 22:25 schrieb Martin Vigoureux:
> WG,
>
> Rob had decided to step down as chair some time ago. There hasn't been 
> any formal communication on that so I'd like, first, to thank Rob for 
> his work and dedication to the group. Thank you very much Rob.
>
> Since that time, I have been actively looking for one (or two) 
> person(s) to replace him. This has proven to be a very challenging 
> endeavour!
>
> But it has finally came to an end.
>
> I am pleased to inform you that I have appointed Jim Guichard and Joel 
> Halpern as co-chairs of SPRING WG, alongside Bruno.
> Thank you Jim, Thank you Joel, and thank you Bruno.
>
>
> Martin
> as AD for SPRING
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring


From nobody Mon Jun 15 04:47:23 2020
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From: <bruno.decraene@orange.com>
To: James Guichard <james.n.guichard@futurewei.com>, "Joel M. Halpern" <jmh@joelhalpern.com>, Rob Shakir <robjs@google.com>
CC: "6man@ietf.org" <6man@ietf.org>, "int-ads@ietf.org" <int-ads@ietf.org>, "<rtg-ads@ietf.org>" <rtg-ads@ietf.org>, Martin Vigoureux <martin.vigoureux@nokia.com>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: Leadership change
Thread-Index: AQHWQon19pfF01O3l0e66QqCJ/Ll8ajZj4WA
Date: Mon, 15 Jun 2020 11:47:17 +0000
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From: Ron Bonica <rbonica@juniper.net>
To: "Xiejingrong (Jingrong)" <xiejingrong@huawei.com>, Aijun Wang <wangaj3@chinatelecom.cn>, "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: About the upper layer header processing in RFC8754(SRH)
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Date: Mon, 15 Jun 2020 13:54:23 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/Fc5xo0ISWBbqSar9iDnLTsoN2EQ>
Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Aijun, Jingrong,

Could the upper-layer header also be ICMP, as in a ICMP Echo message?

                                                    Ron




Juniper Business Use Only
From: ipv6 <ipv6-bounces@ietf.org> On Behalf Of Xiejingrong (Jingrong)
Sent: Sunday, June 14, 2020 10:29 PM
To: Aijun Wang <wangaj3@chinatelecom.cn>; ipv6@ietf.org; spring@ietf.org
Subject: RE: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hi Aijun,
Very good catch!
I think the 4.3.1.2 need to be updated !
I would like to propose some text (maybe later today) for RFC8754 4.3.1.2, =
as well as some other text in SRv6-PGM section 4.1 (and some related sectio=
ns) I have observed  about the Upper-layer processing for further discussio=
n.

Thanks
Jingrong


From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of Aijun Wang
Sent: Monday, June 15, 2020 10:14 AM
To: ipv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf=
.org>
Subject: About the upper layer header processing in RFC8754(SRH)

Hi, Folks:
RFC8754(SRH) section 4.3.1.2(https://tools..ietf.org/html/rfc8754#section-4=
.3.1.2<https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*secti=
on-4.3.1.2__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0skSC1Qbp_vkkYT77iE2zA_6hLItZq=
r8eZxbW1IoKhFgaBkD$>) describes the process of upper layer header as the fo=
llowings:
IF (Upper-layer Header is IPv4 or IPv6) and
       local configuration permits {
     Perform IPv6 decapsulation
     Resubmit the decapsulated packet to the IPv4 or IPv6 module
   }
   ELSE {
   ......
}
And in network programming draft section 9.1(https://datatracker.ietf.org/d=
oc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1<https://u=
rldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-ietf-spring-s=
rv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0s=
kSC1Qbp_vkkYT77iE2zA_6hLItZqr8eZxbW1IoKiVOq5HR$>), one new Ethernet Next He=
ader Type(143) is proposed.

Although the detail process of this new next header are described in the ne=
twork program draft,  does it need to update the section 4.3.1.2 of RFC8754=
 to reflect the process of new header type(143)?

Best Regards

Aijun Wang
China Telecom


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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif">Aijun, Jingrong,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif">Could the upper-layer header also be ICMP, as in a =
ICMP Echo message?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron<o:p></o:p></span></p>
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libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
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<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
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ns-serif"> ipv6 &lt;ipv6-bounces@ietf.org&gt;
<b>On Behalf Of </b>Xiejingrong (Jingrong)<br>
<b>Sent:</b> Sunday, June 14, 2020 10:29 PM<br>
<b>To:</b> Aijun Wang &lt;wangaj3@chinatelecom.cn&gt;; ipv6@ietf.org; sprin=
g@ietf.org<br>
<b>Subject:</b> RE: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><o:p>&nbsp;=
</o:p></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left;line-height:=
12.0pt;background:#FFEB9C">
<b><span style=3D"font-family:&quot;Lato&quot;,sans-serif;color:black;mso-f=
areast-language:ZH-CN">[External Email. Be cautious of content]<o:p></o:p><=
/span></b></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
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<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Hi Aijun,<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Very good catch!
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">I think the 4.3.1.2 need to=
 be updated !
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">I would like to propose som=
e text (maybe later today) for RFC8754 4.3.1.2, as well as some other text =
in SRv6-PGM section 4.1 (and some related sections)
 I have observed &nbsp;about the Upper-layer processing for further discuss=
ion.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Thanks<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Jingrong<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span st=
yle=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fare=
ast-language:ZH-CN">From:</span></b><span style=3D"font-size:11.0pt;font-fa=
mily:&quot;Calibri&quot;,sans-serif;mso-fareast-language:ZH-CN">
 ipv6 [<a href=3D"mailto:ipv6-bounces@ietf.org">mailto:ipv6-bounces@ietf.or=
g</a>] <b>
On Behalf Of </b>Aijun Wang<br>
<b>Sent:</b> Monday, June 15, 2020 10:14 AM<br>
<b>To:</b> <a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"m=
ailto:spring@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH)<o:p=
></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">Hi, Folks=
:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">RFC8754(S=
RH) section 4.3.1.2(<a href=3D"https://urldefense.com/v3/__https:/tools.iet=
f.org/html/rfc8754*section-4.3.1.2__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0skSC1=
Qbp_vkkYT77iE2zA_6hLItZqr8eZxbW1IoKhFgaBkD$">https://tools..ietf.org/html/r=
fc8754#section-4.3.1.2</a>)
 describes the process of upper layer header as the followings:<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">IF (Upper-layer Header is IPv4 or IPv6) and<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local configuration permits {<o:p=
></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp; Perform IPv6 decapsulation<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp; Resubmit the decapsulated packet to the IPv4 =
or IPv6 module<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp; }<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp; ELSE {<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;
<span lang=3D"ZH-CN">&#8230;&#8230;</span><o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-indent:42.0pt"><span style=3D"mso-fare=
ast-language:ZH-CN">}<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">And in ne=
twork programming draft section 9.1(<a href=3D"https://urldefense.com/v3/__=
https:/datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-program=
ming-15*section-9.1__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0skSC1Qbp_vkkYT77iE2z=
A_6hLItZqr8eZxbW1IoKiVOq5HR$">https://datatracker.ietf.org/doc/html/draft-i=
etf-spring-srv6-network-programming-15#section-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">Although =
the detail process of this new next header are described in the network pro=
gram draft, &nbsp;does it need to update the section 4.3.1.2 of RFC8754 to =
reflect the process of new header type(143)?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">Best Rega=
rds<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">Aijun Wan=
g<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">China Tel=
ecom<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
</div>
</div>
</body>
</html>

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From: "Xiejingrong (Jingrong)" <xiejingrong@huawei.com>
To: Aijun Wang <wangaj3@chinatelecom.cn>, "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: Proposed text for discussion//RE: About the upper layer header processing in RFC8754(SRH)
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Subject: [spring] Proposed text for discussion//RE: About the upper layer header processing in RFC8754(SRH)
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Hi, WGs,
****Following is the Proposed text for updating Section 4.3.1.2 of RFC8754.=
 ****

   The next header in the packet in S03 of section 4.3.1.1 of the
  document could be an IPv6 extension header or an IPv6 Upper-layer
   header.  Herein named Following-header for short in this section.

   If the Following-header is a designated upper-layer header(DULH) of
   the SRv6 SID, the packet should be forwarded according to the
   Designated-Forwarding Method (DFM) of the SRv6 SID.  The designated
   upper-layer header of an SRv6 SID should be specified by each type of
   SRv6 SID.  An SRv6 SID MAY has zero, one, or more than one designated
   upper-layer headers.  For example:

   1) an SRv6 SID may expect IPv4 header as its designated upper-layer
   header.

   2) an SRv6 SID may expect either IPv6 header or IPv4 header as its
   designated upper-layer header.

   3) an SRv6 SID may expect Ethernet header as its designated upper-
   layer header.

   4) an SRv6 SID may not expect any header as its designated upper-
   layer header.

   The Designated-Forwarding method of the SRv6 SID should be specified
   by each type of SRv6 SID if the designated upper-layer header of the
   SRv6 SID is not NULL.

   If the Following-header is not the designated upper-layer header of
   the SRv6 SID, and the Following-header is allowed by local
   configuration (e.g.  ICMPv6), then process the upper-layer header.

   If the Following-header is not the designated upper-layer header of
   the SRv6 SID, and the Following-header is not allowed by local
   configuration (e.g.  Default), then the packet should be discarded,
   and an ICMPv6 error message should be sent to the Source Address of
   the packet.  The ICMPv6 error message has an Error code (4) "SR
   Upper-layer Header Error", pointer set to the offset of the upper-
   layer header.

   The following pseudocode illustrates the above process:

      IF (Following-header is the DULH of the SRv6 SID) {
        Execute the Designated-Forwarding Method of the SRv6 SID.
      }
      ELSE IF (Following-header is allowed by local configuration) {
        Process the Upper-layer header.
      }
      ELSE {
        Send an ICMP parameter problem message to the Source Address and
        discard the packet.  Error code (4) "SR Upper-layer
        Header Error", pointer set to the offset of the upper-layer
        header.
      }

**** End of the proposed text ****

Your thoughts?

Thanks
Jingrong

From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of Xiejingrong (Jingron=
g)
Sent: Monday, June 15, 2020 10:29 AM
To: Aijun Wang <wangaj3@chinatelecom.cn>; ipv6@ietf.org; spring@ietf.org
Subject: RE: About the upper layer header processing in RFC8754(SRH)

Hi Aijun,
Very good catch!
I think the 4.3.1.2 need to be updated !
I would like to propose some text (maybe later today) for RFC8754 4.3.1.2, =
as well as some other text in SRv6-PGM section 4.1 (and some related sectio=
ns) I have observed  about the Upper-layer processing for further discussio=
n.

Thanks
Jingrong


From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of Aijun Wang
Sent: Monday, June 15, 2020 10:14 AM
To: ipv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf=
.org>
Subject: About the upper layer header processing in RFC8754(SRH)

Hi, Folks:
RFC8754(SRH) section 4.3.1.2(https://tools..ietf.org/html/rfc8754#section-4=
.3.1.2<https://tools.ietf.org/html/rfc8754#section-4.3.1.2>) describes the =
process of upper layer header as the followings:
IF (Upper-layer Header is IPv4 or IPv6) and
       local configuration permits {
     Perform IPv6 decapsulation
     Resubmit the decapsulated packet to the IPv4 or IPv6 module
   }
   ELSE {
   ......
}
And in network programming draft section 9.1(https://datatracker.ietf.org/d=
oc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1), one new=
 Ethernet Next Header Type(143) is proposed.

Although the detail process of this new next header are described in the ne=
twork program draft,  does it need to update the section 4.3.1.2 of RFC8754=
 to reflect the process of new header type(143)?

Best Regards

Aijun Wang
China Telecom


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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Hi, WGs,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">****Following is the Proposed text for =
updating Section 4.3.1.2 of RFC8754. ****<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; The next header in the pac=
ket in S03 of section 4.3.1.1 of the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;document could be an IPv6 e=
xtension header or an IPv6 Upper-layer<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; header.&nbsp; Herein named=
 Following-header for short in this section.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; If the Following-header is=
 a designated upper-layer header(DULH) of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; the SRv6 SID, the packet s=
hould be forwarded according to the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; Designated-Forwarding Meth=
od (DFM) of the SRv6 SID.&nbsp; The designated<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; upper-layer header of an S=
Rv6 SID should be specified by each type of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; SRv6 SID.&nbsp; An SRv6 SI=
D MAY has zero, one, or more than one designated<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; upper-layer headers.&nbsp;=
 For example:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; 1) an SRv6 SID may expect =
IPv4 header as its designated upper-layer<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; header.<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; 2) an SRv6 SID may expect =
either IPv6 header or IPv4 header as its<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; designated upper-layer hea=
der.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; 3) an SRv6 SID may expect =
Ethernet header as its designated upper-<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; layer header.<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; 4) an SRv6 SID may not exp=
ect any header as its designated upper-<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; layer header.<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; The Designated-Forwarding =
method of the SRv6 SID should be specified<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; by each type of SRv6 SID i=
f the designated upper-layer header of the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; SRv6 SID is not NULL.<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; If the Following-header is=
 not the designated upper-layer header of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; the SRv6 SID, and the Foll=
owing-header is allowed by local<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; configuration (e.g.&nbsp; =
ICMPv6), then process the upper-layer header.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; If the Following-header is=
 not the designated upper-layer header of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; the SRv6 SID, and the Foll=
owing-header is not allowed by local<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; configuration (e.g.&nbsp; =
Default), then the packet should be discarded,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; and an ICMPv6 error messag=
e should be sent to the Source Address of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; the packet.&nbsp; The ICMP=
v6 error message has an Error code (4) &quot;SR<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; Upper-layer Header Error&q=
uot;, pointer set to the offset of the upper-<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; layer header.<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp; The following pseudocode i=
llustrates the above process:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; IF (Foll=
owing-header is the DULH of the SRv6 SID) {<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp; Execute the Designated-Forwarding Method of the SRv6 SID.<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ELSE IF =
(Following-header is allowed by local configuration) {<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp; Process the Upper-layer header.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ELSE {<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp; Send an ICMP parameter problem message to the Source Address and<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp; discard the packet. &nbsp;Error code (4) &quot;SR Upper-layer<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp; Header Error&quot;, pointer set to the offset of the upper-layer<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp; header.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">**** End of the proposed text ****<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Your thoughts?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Thanks<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Jingrong<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span la=
ng=3D"EN-US" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans=
-serif">From:</span></b><span lang=3D"EN-US" style=3D"font-size:11.0pt;font=
-family:&quot;Calibri&quot;,sans-serif"> ipv6 [mailto:ipv6-bounces@ietf.org=
]
<b>On Behalf Of </b>Xiejingrong (Jingrong)<br>
<b>Sent:</b> Monday, June 15, 2020 10:29 AM<br>
<b>To:</b> Aijun Wang &lt;wangaj3@chinatelecom.cn&gt;; ipv6@ietf.org; sprin=
g@ietf.org<br>
<b>Subject:</b> RE: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Hi Aijun,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Very good catch!
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">I think the 4.3.1.2 need to be updated =
!
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">I would like to propose some text (mayb=
e later today) for RFC8754 4.3.1.2, as well as some other text in SRv6-PGM =
section 4.1 (and some related sections) I have observed
 &nbsp;about the Upper-layer processing for further discussion.<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Thanks<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Jingrong<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span la=
ng=3D"EN-US" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans=
-serif">From:</span></b><span lang=3D"EN-US" style=3D"font-size:11.0pt;font=
-family:&quot;Calibri&quot;,sans-serif"> ipv6 [<a href=3D"mailto:ipv6-bounc=
es@ietf.org">mailto:ipv6-bounces@ietf.org</a>]
<b>On Behalf Of </b>Aijun Wang<br>
<b>Sent:</b> Monday, June 15, 2020 10:14 AM<br>
<b>To:</b> <a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"m=
ailto:spring@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH)<o:p=
></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Hi, Folks:<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-US">RFC8754(SRH) section 4.3.1.2(<a=
 href=3D"https://tools.ietf.org/html/rfc8754#section-4.3.1.2">https://tools=
..ietf.org/html/rfc8754#section-4.3.1.2</a>) describes the process of upper=
 layer header as the followings:<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">IF (Up=
per-layer Header is IPv4 or IPv6) and<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local configuration permits {<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp;&nbsp;&nbsp; Perform IPv6 decapsulation<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp;&nbsp;&nbsp; Resubmit the decapsulated packet to the IPv4 or IPv6 mod=
ule<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp; }<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp; ELSE {<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp;
</span><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&#82=
30;&#8230;<span lang=3D"EN-US"><o:p></o:p></span></span></p>
<p class=3D"MsoNormal" style=3D"text-indent:42.0pt"><span lang=3D"EN-US">}<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">And in network programming draf=
t section 9.1(<a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-s=
pring-srv6-network-programming-15#section-9.1">https://datatracker.ietf.org=
/doc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Although the detail process of =
this new next header are described in the network program draft, &nbsp;does=
 it need to update the section 4.3.1.2 of RFC8754 to reflect the process of=
 new header type(143)?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Best Regards<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Aijun Wang<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-US">China Telecom<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
</div>
</body>
</html>

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From: "Xiejingrong (Jingrong)" <xiejingrong@huawei.com>
To: Ron Bonica <rbonica@juniper.net>, Aijun Wang <wangaj3@chinatelecom.cn>, "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: About the upper layer header processing in RFC8754(SRH)
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Date: Mon, 15 Jun 2020 15:10:21 +0000
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Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Hi Ron,
Agreed ICMP is an upper-layer header that should be consistent with the SRv=
6-OAM draft [1], and I guess you may have also noticed the same.
Please see the proposed text I have just posted.

Regards,
Jingrong

[1] https://tools.ietf.org/html/draft-ietf-6man-spring-srv6-oam-05


From: Ron Bonica [mailto:rbonica@juniper.net]
Sent: Monday, June 15, 2020 9:54 PM
To: Xiejingrong (Jingrong) <xiejingrong@huawei.com>; Aijun Wang <wangaj3@ch=
inatelecom.cn>; ipv6@ietf.org; spring@ietf.org
Subject: RE: About the upper layer header processing in RFC8754(SRH)

Aijun, Jingrong,

Could the upper-layer header also be ICMP, as in a ICMP Echo message?

                                                    Ron




Juniper Business Use Only
From: ipv6 <ipv6-bounces@ietf.org<mailto:ipv6-bounces@ietf.org>> On Behalf =
Of Xiejingrong (Jingrong)
Sent: Sunday, June 14, 2020 10:29 PM
To: Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>; i=
pv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf.org>
Subject: RE: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hi Aijun,
Very good catch!
I think the 4.3.1.2 need to be updated !
I would like to propose some text (maybe later today) for RFC8754 4.3.1.2, =
as well as some other text in SRv6-PGM section 4.1 (and some related sectio=
ns) I have observed  about the Upper-layer processing for further discussio=
n.

Thanks
Jingrong


From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of Aijun Wang
Sent: Monday, June 15, 2020 10:14 AM
To: ipv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf=
.org>
Subject: About the upper layer header processing in RFC8754(SRH)

Hi, Folks:
RFC8754(SRH) section 4.3.1.2(https://tools..ietf.org/html/rfc8754#section-4=
.3.1.2<https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*secti=
on-4.3.1.2__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0skSC1Qbp_vkkYT77iE2zA_6hLItZq=
r8eZxbW1IoKhFgaBkD$>) describes the process of upper layer header as the fo=
llowings:
IF (Upper-layer Header is IPv4 or IPv6) and
       local configuration permits {
     Perform IPv6 decapsulation
     Resubmit the decapsulated packet to the IPv4 or IPv6 module
   }
   ELSE {
   ......
}
And in network programming draft section 9.1(https://datatracker.ietf.org/d=
oc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1<https://u=
rldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-ietf-spring-s=
rv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0s=
kSC1Qbp_vkkYT77iE2zA_6hLItZqr8eZxbW1IoKiVOq5HR$>), one new Ethernet Next He=
ader Type(143) is proposed.

Although the detail process of this new next header are described in the ne=
twork program draft,  does it need to update the section 4.3.1.2 of RFC8754=
 to reflect the process of new header type(143)?

Best Regards

Aijun Wang
China Telecom


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</head>
<body lang=3D"ZH-CN" link=3D"#0563C1" vlink=3D"#954F72" style=3D"text-justi=
fy-trim:punctuation">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Hi Ron,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Agreed ICMP is an upper-layer header th=
at should be consistent with the SRv6-OAM draft [1], and I guess you may ha=
ve also noticed the same.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Please see the proposed text I have jus=
t posted.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Jingrong<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">[1]</span><span lang=3D"EN-US">
</span><span lang=3D"EN-US" style=3D"font-family:&quot;Calibri&quot;,sans-s=
erif;color:#1F497D">https://tools.ietf.org/html/draft-ietf-6man-spring-srv6=
-oam-05<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span la=
ng=3D"EN-US" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans=
-serif">From:</span></b><span lang=3D"EN-US" style=3D"font-size:11.0pt;font=
-family:&quot;Calibri&quot;,sans-serif"> Ron Bonica [mailto:rbonica@juniper=
.net]
<br>
<b>Sent:</b> Monday, June 15, 2020 9:54 PM<br>
<b>To:</b> Xiejingrong (Jingrong) &lt;xiejingrong@huawei.com&gt;; Aijun Wan=
g &lt;wangaj3@chinatelecom.cn&gt;; ipv6@ietf.org; spring@ietf.org<br>
<b>Subject:</b> RE: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif">Aijun, Jingrong,<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif">Could the upper-layer header also be=
 ICMP, as in a ICMP Echo message?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-s=
erif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0cm;margin=
-bottom:.0001pt;text-align:center">
<span lang=3D"EN-US" style=3D"font-size:7.0pt;color:black">Juniper Business=
 Use Only</span><span lang=3D"EN-US"><o:p></o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span la=
ng=3D"EN-US" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans=
-serif">From:</span></b><span lang=3D"EN-US" style=3D"font-size:11.0pt;font=
-family:&quot;Calibri&quot;,sans-serif"> ipv6 &lt;<a href=3D"mailto:ipv6-bo=
unces@ietf.org">ipv6-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Xiejingrong (Jingrong)<br>
<b>Sent:</b> Sunday, June 14, 2020 10:29 PM<br>
<b>To:</b> Aijun Wang &lt;<a href=3D"mailto:wangaj3@chinatelecom.cn">wangaj=
3@chinatelecom.cn</a>&gt;;
<a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"mailto:sprin=
g@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> RE: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left;line-height:=
12.0pt;background:#FFEB9C">
<b><span lang=3D"EN-US" style=3D"font-family:Lato;color:black">[External Em=
ail. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-s=
erif"><o:p>&nbsp;</o:p></span></p>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Hi Aijun,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Very good catch!
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">I think the 4.3.1.2 need to be updated =
!
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">I would like to propose some text (mayb=
e later today) for RFC8754 4.3.1.2, as well as some other text in SRv6-PGM =
section 4.1 (and some related sections) I have observed
 &nbsp;about the Upper-layer processing for further discussion.<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Thanks<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D">Jingrong<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;Cali=
bri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span la=
ng=3D"EN-US" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans=
-serif">From:</span></b><span lang=3D"EN-US" style=3D"font-size:11.0pt;font=
-family:&quot;Calibri&quot;,sans-serif"> ipv6 [<a href=3D"mailto:ipv6-bounc=
es@ietf.org">mailto:ipv6-bounces@ietf.org</a>]
<b>On Behalf Of </b>Aijun Wang<br>
<b>Sent:</b> Monday, June 15, 2020 10:14 AM<br>
<b>To:</b> <a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"m=
ailto:spring@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH)<o:p=
></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Hi, Folks:<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-US">RFC8754(SRH) section 4.3.1.2(<a=
 href=3D"https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*sec=
tion-4.3.1.2__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0skSC1Qbp_vkkYT77iE2zA_6hLIt=
Zqr8eZxbW1IoKhFgaBkD$">https://tools..ietf.org/html/rfc8754#section-4.3.1.2=
</a>)
 describes the process of upper layer header as the followings:<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">IF (Up=
per-layer Header is IPv4 or IPv6) and<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local configuration permits {<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp;&nbsp;&nbsp; Perform IPv6 decapsulation<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp;&nbsp;&nbsp; Resubmit the decapsulated packet to the IPv4 or IPv6 mod=
ule<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp; }<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp; ELSE {<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;=
&nbsp;
</span><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&#82=
30;&#8230;<span lang=3D"EN-US"><o:p></o:p></span></span></p>
<p class=3D"MsoNormal" style=3D"text-indent:42.0pt"><span lang=3D"EN-US">}<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">And in network programming draf=
t section 9.1(<a href=3D"https://urldefense.com/v3/__https:/datatracker.iet=
f.org/doc/html/draft-ietf-spring-srv6-network-programming-15*section-9.1__;=
Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0skSC1Qbp_vkkYT77iE2zA_6hLItZqr8eZxbW1IoKiV=
Oq5HR$">https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-networ=
k-programming-15#section-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Although the detail process of =
this new next header are described in the network program draft, &nbsp;does=
 it need to update the section 4.3.1.2 of RFC8754 to reflect the process of=
 new header type(143)?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Best Regards<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Aijun Wang<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-US">China Telecom<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
</div>
</div>
</body>
</html>

--_000_07be633a867a4db2b8a47477bb5f84cfhuaweicom_--


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From: Ron Bonica <rbonica@juniper.net>
To: "Xiejingrong (Jingrong)" <xiejingrong@huawei.com>, Aijun Wang <wangaj3@chinatelecom.cn>, "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: About the upper layer header processing in RFC8754(SRH)
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/af941WEsikyDiySR0gTfel2aLlY>
Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Content-Type: text/plain; charset="us-ascii"
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Hi Jingrong,

Where did you post the text?

                             Ron




Juniper Business Use Only
From: Xiejingrong (Jingrong) <xiejingrong@huawei.com>
Sent: Monday, June 15, 2020 11:10 AM
To: Ron Bonica <rbonica@juniper.net>; Aijun Wang <wangaj3@chinatelecom.cn>;=
 ipv6@ietf.org; spring@ietf.org
Subject: RE: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hi Ron,
Agreed ICMP is an upper-layer header that should be consistent with the SRv=
6-OAM draft [1], and I guess you may have also noticed the same.
Please see the proposed text I have just posted.

Regards,
Jingrong

[1] https://tools.ietf.org/html/draft-ietf-6man-spring-srv6-oam-05


From: Ron Bonica [mailto:rbonica@juniper.net]
Sent: Monday, June 15, 2020 9:54 PM
To: Xiejingrong (Jingrong) <xiejingrong@huawei.com<mailto:xiejingrong@huawe=
i.com>>; Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn=
>>; ipv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf=
.org>
Subject: RE: About the upper layer header processing in RFC8754(SRH)

Aijun, Jingrong,

Could the upper-layer header also be ICMP, as in a ICMP Echo message?

                                                    Ron




Juniper Business Use Only
From: ipv6 <ipv6-bounces@ietf.org<mailto:ipv6-bounces@ietf.org>> On Behalf =
Of Xiejingrong (Jingrong)
Sent: Sunday, June 14, 2020 10:29 PM
To: Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>; i=
pv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf.org>
Subject: RE: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hi Aijun,
Very good catch!
I think the 4.3.1.2 need to be updated !
I would like to propose some text (maybe later today) for RFC8754 4.3.1.2, =
as well as some other text in SRv6-PGM section 4.1 (and some related sectio=
ns) I have observed  about the Upper-layer processing for further discussio=
n.

Thanks
Jingrong


From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of Aijun Wang
Sent: Monday, June 15, 2020 10:14 AM
To: ipv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf=
.org>
Subject: About the upper layer header processing in RFC8754(SRH)

Hi, Folks:
RFC8754(SRH) section 4.3.1.2(https://tools..ietf.org/html/rfc8754#section-4=
.3.1.2<https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*secti=
on-4.3.1.2__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0skSC1Qbp_vkkYT77iE2zA_6hLItZq=
r8eZxbW1IoKhFgaBkD$>) describes the process of upper layer header as the fo=
llowings:
IF (Upper-layer Header is IPv4 or IPv6) and
       local configuration permits {
     Perform IPv6 decapsulation
     Resubmit the decapsulated packet to the IPv4 or IPv6 module
   }
   ELSE {
   ......
}
And in network programming draft section 9.1(https://datatracker.ietf.org/d=
oc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1<https://u=
rldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-ietf-spring-s=
rv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0s=
kSC1Qbp_vkkYT77iE2zA_6hLItZqr8eZxbW1IoKiVOq5HR$>), one new Ethernet Next He=
ader Type(143) is proposed.

Although the detail process of this new next header are described in the ne=
twork program draft,  does it need to update the section 4.3.1.2 of RFC8754=
 to reflect the process of new header type(143)?

Best Regards

Aijun Wang
China Telecom


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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif">Hi Jingrong,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif">Where did you post the text?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span st=
yle=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif">From:</=
span></b><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sa=
ns-serif"> Xiejingrong (Jingrong) &lt;xiejingrong@huawei.com&gt;
<br>
<b>Sent:</b> Monday, June 15, 2020 11:10 AM<br>
<b>To:</b> Ron Bonica &lt;rbonica@juniper.net&gt;; Aijun Wang &lt;wangaj3@c=
hinatelecom.cn&gt;; ipv6@ietf.org; spring@ietf.org<br>
<b>Subject:</b> RE: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><o:p>&nbsp;=
</o:p></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left;line-height:=
12.0pt;background:#FFEB9C">
<b><span style=3D"font-family:&quot;Lato&quot;,sans-serif;color:black;mso-f=
areast-language:ZH-CN">[External Email. Be cautious of content]<o:p></o:p><=
/span></b></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fareast=
-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Hi Ron,<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Agreed ICMP is an upper-lay=
er header that should be consistent with the SRv6-OAM draft [1], and I gues=
s you may have also noticed the same.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Please see the proposed tex=
t I have just posted.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Regards,<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Jingrong<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">[1]</span><span style=3D"ms=
o-fareast-language:ZH-CN">
</span><span style=3D"font-family:&quot;Calibri&quot;,sans-serif;color:#1F4=
97D;mso-fareast-language:ZH-CN"><a href=3D"https://tools.ietf.org/html/draf=
t-ietf-6man-spring-srv6-oam-05">https://tools.ietf.org/html/draft-ietf-6man=
-spring-srv6-oam-05</a><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span st=
yle=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fare=
ast-language:ZH-CN">From:</span></b><span style=3D"font-size:11.0pt;font-fa=
mily:&quot;Calibri&quot;,sans-serif;mso-fareast-language:ZH-CN">
 Ron Bonica [<a href=3D"mailto:rbonica@juniper.net">mailto:rbonica@juniper.=
net</a>]
<br>
<b>Sent:</b> Monday, June 15, 2020 9:54 PM<br>
<b>To:</b> Xiejingrong (Jingrong) &lt;<a href=3D"mailto:xiejingrong@huawei.=
com">xiejingrong@huawei.com</a>&gt;; Aijun Wang &lt;<a href=3D"mailto:wanga=
j3@chinatelecom.cn">wangaj3@chinatelecom.cn</a>&gt;;
<a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"mailto:sprin=
g@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> RE: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN">Aijun, Jingrong,<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN">Could the upper-layer he=
ader also be ICMP, as in a ICMP Echo message?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN">&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fareast=
-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black;mso-fareast-language:ZH-CN">Juni=
per Business Use Only</span><span style=3D"mso-fareast-language:ZH-CN"><o:p=
></o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span st=
yle=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fare=
ast-language:ZH-CN">From:</span></b><span style=3D"font-size:11.0pt;font-fa=
mily:&quot;Calibri&quot;,sans-serif;mso-fareast-language:ZH-CN">
 ipv6 &lt;<a href=3D"mailto:ipv6-bounces@ietf.org">ipv6-bounces@ietf.org</a=
>&gt; <b>On Behalf Of
</b>Xiejingrong (Jingrong)<br>
<b>Sent:</b> Sunday, June 14, 2020 10:29 PM<br>
<b>To:</b> Aijun Wang &lt;<a href=3D"mailto:wangaj3@chinatelecom.cn">wangaj=
3@chinatelecom.cn</a>&gt;;
<a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"mailto:sprin=
g@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> RE: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left;line-height:=
12.0pt;background:#FFEB9C">
<b><span style=3D"font-family:&quot;Lato&quot;,sans-serif;color:black;mso-f=
areast-language:ZH-CN">[External Email. Be cautious of content]<o:p></o:p><=
/span></b></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fareast=
-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Hi Aijun,<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Very good catch!
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">I think the 4.3.1.2 need to=
 be updated !
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">I would like to propose som=
e text (maybe later today) for RFC8754 4.3.1.2, as well as some other text =
in SRv6-PGM section 4.1 (and some related sections)
 I have observed &nbsp;about the Upper-layer processing for further discuss=
ion.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Thanks<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Jingrong<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span st=
yle=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fare=
ast-language:ZH-CN">From:</span></b><span style=3D"font-size:11.0pt;font-fa=
mily:&quot;Calibri&quot;,sans-serif;mso-fareast-language:ZH-CN">
 ipv6 [<a href=3D"mailto:ipv6-bounces@ietf.org">mailto:ipv6-bounces@ietf.or=
g</a>] <b>
On Behalf Of </b>Aijun Wang<br>
<b>Sent:</b> Monday, June 15, 2020 10:14 AM<br>
<b>To:</b> <a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"m=
ailto:spring@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH)<o:p=
></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">Hi, Folks=
:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">RFC8754(S=
RH) section 4.3.1.2(<a href=3D"https://urldefense.com/v3/__https:/tools.iet=
f.org/html/rfc8754*section-4.3.1.2__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0skSC1=
Qbp_vkkYT77iE2zA_6hLItZqr8eZxbW1IoKhFgaBkD$">https://tools..ietf.org/html/r=
fc8754#section-4.3.1.2</a>)
 describes the process of upper layer header as the followings:<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">IF (Upper-layer Header is IPv4 or IPv6) and<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local configuration permits {<o:p=
></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp; Perform IPv6 decapsulation<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp; Resubmit the decapsulated packet to the IPv4 =
or IPv6 module<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp; }<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp; ELSE {<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;
<span lang=3D"ZH-CN">&#8230;&#8230;</span><o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-indent:42.0pt"><span style=3D"mso-fare=
ast-language:ZH-CN">}<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">And in ne=
twork programming draft section 9.1(<a href=3D"https://urldefense.com/v3/__=
https:/datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-program=
ming-15*section-9.1__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0skSC1Qbp_vkkYT77iE2z=
A_6hLItZqr8eZxbW1IoKiVOq5HR$">https://datatracker.ietf.org/doc/html/draft-i=
etf-spring-srv6-network-programming-15#section-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">Although =
the detail process of this new next header are described in the network pro=
gram draft, &nbsp;does it need to update the section 4.3.1.2 of RFC8754 to =
reflect the process of new header type(143)?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">Best Rega=
rds<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">Aijun Wan=
g<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">China Tel=
ecom<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
</div>
</div>
</div>
</body>
</html>

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From: Ron Bonica <rbonica@juniper.net>
To: "Xiejingrong (Jingrong)" <xiejingrong@huawei.com>, Aijun Wang <wangaj3@chinatelecom.cn>, "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/N-y_kWK_b6n6INLQzcIaotoULBo>
Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Content-Type: text/plain; charset="us-ascii"
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Hi Jingrong,

I have found the text. (It was in my SPRING mailbox).

A much shorter update may suffice. Does the following work for you?

OLD>
IF (Upper-layer Header is IPv4 or IPv6) and
       local configuration permits {
     Perform IPv6 decapsulation
     Resubmit the decapsulated packet to the IPv4 or IPv6 module
   }
   ELSE {
   ......
}

<OLD

NEW> IF (Upper-layer Header is IPv4 or IPv6 or Ethernet or ICMP) and
       local configuration permits {
     Perform IPv6 decapsulation
     Submit the newly exposed payload to the appropriate processing module
   }
   ELSE {
   ......
}

<NEW




Juniper Business Use Only
From: Xiejingrong (Jingrong) <xiejingrong@huawei.com>
Sent: Monday, June 15, 2020 11:10 AM
To: Ron Bonica <rbonica@juniper.net>; Aijun Wang <wangaj3@chinatelecom.cn>;=
 ipv6@ietf.org; spring@ietf.org
Subject: RE: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hi Ron,
Agreed ICMP is an upper-layer header that should be consistent with the SRv=
6-OAM draft [1], and I guess you may have also noticed the same.
Please see the proposed text I have just posted.

Regards,
Jingrong

[1] https://tools.ietf.org/html/draft-ietf-6man-spring-srv6-oam-05


From: Ron Bonica [mailto:rbonica@juniper.net]
Sent: Monday, June 15, 2020 9:54 PM
To: Xiejingrong (Jingrong) <xiejingrong@huawei.com<mailto:xiejingrong@huawe=
i.com>>; Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn=
>>; ipv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf=
.org>
Subject: RE: About the upper layer header processing in RFC8754(SRH)

Aijun, Jingrong,

Could the upper-layer header also be ICMP, as in a ICMP Echo message?

                                                    Ron




Juniper Business Use Only
From: ipv6 <ipv6-bounces@ietf.org<mailto:ipv6-bounces@ietf.org>> On Behalf =
Of Xiejingrong (Jingrong)
Sent: Sunday, June 14, 2020 10:29 PM
To: Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>; i=
pv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf.org>
Subject: RE: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hi Aijun,
Very good catch!
I think the 4.3.1.2 need to be updated !
I would like to propose some text (maybe later today) for RFC8754 4.3.1.2, =
as well as some other text in SRv6-PGM section 4.1 (and some related sectio=
ns) I have observed  about the Upper-layer processing for further discussio=
n.

Thanks
Jingrong


From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of Aijun Wang
Sent: Monday, June 15, 2020 10:14 AM
To: ipv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf=
.org>
Subject: About the upper layer header processing in RFC8754(SRH)

Hi, Folks:
RFC8754(SRH) section 4.3.1.2(https://tools..ietf.org/html/rfc8754#section-4=
.3.1.2<https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*secti=
on-4.3.1.2__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0skSC1Qbp_vkkYT77iE2zA_6hLItZq=
r8eZxbW1IoKhFgaBkD$>) describes the process of upper layer header as the fo=
llowings:
IF (Upper-layer Header is IPv4 or IPv6) and
       local configuration permits {
     Perform IPv6 decapsulation
     Resubmit the decapsulated packet to the IPv4 or IPv6 module
   }
   ELSE {
   ......
}
And in network programming draft section 9.1(https://datatracker.ietf.org/d=
oc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1<https://u=
rldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-ietf-spring-s=
rv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0s=
kSC1Qbp_vkkYT77iE2zA_6hLItZqr8eZxbW1IoKiVOq5HR$>), one new Ethernet Next He=
ader Type(143) is proposed.

Although the detail process of this new next header are described in the ne=
twork program draft,  does it need to update the section 4.3.1.2 of RFC8754=
 to reflect the process of new header type(143)?

Best Regards

Aijun Wang
China Telecom


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<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
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</head>
<body lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72" style=3D"text-justi=
fy-trim:punctuation">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif">Hi Jingrong,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif">I have found the text. (It was in my SPRING mailbox=
).<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif">A much shorter update may suffice. Does the followi=
ng work for you?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif">OLD&gt;<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">IF (Upper-layer Header is IPv4 or IPv6) and<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local configuration permits {<o:p=
></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp; Perform IPv6 decapsulation<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp; Resubmit the decapsulated packet to the IPv4 =
or IPv6 module<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp; }<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp; ELSE {<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;
<span lang=3D"ZH-CN">&#8230;&#8230;</span><o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-indent:42.0pt"><span style=3D"mso-fare=
ast-language:ZH-CN">}<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif">&lt;OLD<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif">NEW&gt;</s=
pan><span style=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fare=
ast-language:ZH-CN"> IF (Upper-layer Header is IPv4 or
 IPv6 or Ethernet or ICMP) and<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local configuration permits {<o:p=
></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp; Perform IPv6 decapsulation<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp; Submit the newly exposed payload to the appro=
priate processing module<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp; }<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp; ELSE {<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;
<span lang=3D"ZH-CN">&#8230;&#8230;</span><o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-indent:42.0pt"><span style=3D"mso-fare=
ast-language:ZH-CN">}<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif">&lt;NEW<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span st=
yle=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif">From:</=
span></b><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sa=
ns-serif"> Xiejingrong (Jingrong) &lt;xiejingrong@huawei.com&gt;
<br>
<b>Sent:</b> Monday, June 15, 2020 11:10 AM<br>
<b>To:</b> Ron Bonica &lt;rbonica@juniper.net&gt;; Aijun Wang &lt;wangaj3@c=
hinatelecom.cn&gt;; ipv6@ietf.org; spring@ietf.org<br>
<b>Subject:</b> RE: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><o:p>&nbsp;=
</o:p></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left;line-height:=
12.0pt;background:#FFEB9C">
<b><span style=3D"font-family:&quot;Lato&quot;,sans-serif;color:black;mso-f=
areast-language:ZH-CN">[External Email. Be cautious of content]<o:p></o:p><=
/span></b></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fareast=
-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Hi Ron,<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Agreed ICMP is an upper-lay=
er header that should be consistent with the SRv6-OAM draft [1], and I gues=
s you may have also noticed the same.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Please see the proposed tex=
t I have just posted.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Regards,<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Jingrong<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">[1]</span><span style=3D"ms=
o-fareast-language:ZH-CN">
</span><span style=3D"font-family:&quot;Calibri&quot;,sans-serif;color:#1F4=
97D;mso-fareast-language:ZH-CN"><a href=3D"https://tools.ietf.org/html/draf=
t-ietf-6man-spring-srv6-oam-05">https://tools.ietf.org/html/draft-ietf-6man=
-spring-srv6-oam-05</a><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span st=
yle=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fare=
ast-language:ZH-CN">From:</span></b><span style=3D"font-size:11.0pt;font-fa=
mily:&quot;Calibri&quot;,sans-serif;mso-fareast-language:ZH-CN">
 Ron Bonica [<a href=3D"mailto:rbonica@juniper.net">mailto:rbonica@juniper.=
net</a>]
<br>
<b>Sent:</b> Monday, June 15, 2020 9:54 PM<br>
<b>To:</b> Xiejingrong (Jingrong) &lt;<a href=3D"mailto:xiejingrong@huawei.=
com">xiejingrong@huawei.com</a>&gt;; Aijun Wang &lt;<a href=3D"mailto:wanga=
j3@chinatelecom.cn">wangaj3@chinatelecom.cn</a>&gt;;
<a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"mailto:sprin=
g@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> RE: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN">Aijun, Jingrong,<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN">Could the upper-layer he=
ader also be ICMP, as in a ICMP Echo message?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN">&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fareast=
-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black;mso-fareast-language:ZH-CN">Juni=
per Business Use Only</span><span style=3D"mso-fareast-language:ZH-CN"><o:p=
></o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span st=
yle=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fare=
ast-language:ZH-CN">From:</span></b><span style=3D"font-size:11.0pt;font-fa=
mily:&quot;Calibri&quot;,sans-serif;mso-fareast-language:ZH-CN">
 ipv6 &lt;<a href=3D"mailto:ipv6-bounces@ietf.org">ipv6-bounces@ietf.org</a=
>&gt; <b>On Behalf Of
</b>Xiejingrong (Jingrong)<br>
<b>Sent:</b> Sunday, June 14, 2020 10:29 PM<br>
<b>To:</b> Aijun Wang &lt;<a href=3D"mailto:wangaj3@chinatelecom.cn">wangaj=
3@chinatelecom.cn</a>&gt;;
<a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"mailto:sprin=
g@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> RE: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left;line-height:=
12.0pt;background:#FFEB9C">
<b><span style=3D"font-family:&quot;Lato&quot;,sans-serif;color:black;mso-f=
areast-language:ZH-CN">[External Email. Be cautious of content]<o:p></o:p><=
/span></b></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fareast=
-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Hi Aijun,<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Very good catch!
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">I think the 4.3.1.2 need to=
 be updated !
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">I would like to propose som=
e text (maybe later today) for RFC8754 4.3.1.2, as well as some other text =
in SRv6-PGM section 4.1 (and some related sections)
 I have observed &nbsp;about the Upper-layer processing for further discuss=
ion.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Thanks<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN">Jingrong<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,sans-=
serif;color:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p=
>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span st=
yle=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fare=
ast-language:ZH-CN">From:</span></b><span style=3D"font-size:11.0pt;font-fa=
mily:&quot;Calibri&quot;,sans-serif;mso-fareast-language:ZH-CN">
 ipv6 [<a href=3D"mailto:ipv6-bounces@ietf.org">mailto:ipv6-bounces@ietf.or=
g</a>] <b>
On Behalf Of </b>Aijun Wang<br>
<b>Sent:</b> Monday, June 15, 2020 10:14 AM<br>
<b>To:</b> <a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"m=
ailto:spring@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH)<o:p=
></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">Hi, Folks=
:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">RFC8754(S=
RH) section 4.3.1.2(<a href=3D"https://urldefense.com/v3/__https:/tools.iet=
f.org/html/rfc8754*section-4.3.1.2__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0skSC1=
Qbp_vkkYT77iE2zA_6hLItZqr8eZxbW1IoKhFgaBkD$">https://tools..ietf.org/html/r=
fc8754#section-4.3.1.2</a>)
 describes the process of upper layer header as the followings:<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">IF (Upper-layer Header is IPv4 or IPv6) and<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local configuration permits {<o:p=
></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp; Perform IPv6 decapsulation<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;&nbsp;&nbsp; Resubmit the decapsulated packet to the IPv4 =
or IPv6 module<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp; }<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp; ELSE {<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black;mso-fareast-language:ZH=
-CN">&nbsp;&nbsp;
<span lang=3D"ZH-CN">&#8230;&#8230;</span><o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-indent:42.0pt"><span style=3D"mso-fare=
ast-language:ZH-CN">}<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">And in ne=
twork programming draft section 9.1(<a href=3D"https://urldefense.com/v3/__=
https:/datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-program=
ming-15*section-9.1__;Iw!!NEt6yMaO-gk!TQj3lWlbJi1xnhmD0skSC1Qbp_vkkYT77iE2z=
A_6hLItZqr8eZxbW1IoKiVOq5HR$">https://datatracker.ietf.org/doc/html/draft-i=
etf-spring-srv6-network-programming-15#section-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">Although =
the detail process of this new next header are described in the network pro=
gram draft, &nbsp;does it need to update the section 4.3.1.2 of RFC8754 to =
reflect the process of new header type(143)?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">Best Rega=
rds<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">Aijun Wan=
g<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">China Tel=
ecom<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
</div>
</div>
</div>
</body>
</html>

--_000_DM6PR05MB6348465C5549EA7E8A129C75AE9C0DM6PR05MB6348namp_--


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From: "Ketan Talaulikar (ketant)" <ketant@cisco.com>
To: Martin Vigoureux <martin.vigoureux@nokia.com>, "spring@ietf.org" <spring@ietf.org>
CC: "6man@ietf.org" <6man@ietf.org>, "int-ads@ietf.org" <int-ads@ietf.org>, "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "<rtg-ads@ietf.org>" <rtg-ads@ietf.org>, Rob Shakir <robjs@google.com>, James Guichard <james.n.guichard@futurewei.com>, "Joel M. Halpern" <jmh@joelhalpern.com>
Thread-Topic: [spring] Leadership change
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/v23aPeK8cJg3FdPWb6-c0WYffHg>
Subject: Re: [spring] Leadership change
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Thanks Rob for your help and support. Thanks as well to Bruno for his conti=
nued help.

Welcome Joel and Jim in your new roles.

Thanks,
Ketan

-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of Martin Vigoureux
Sent: 15 June 2020 01:55
To: spring@ietf.org
Cc: 6man@ietf.org; int-ads@ietf.org; bruno.decraene@orange.com; <rtg-ads@ie=
tf.org> <rtg-ads@ietf.org>; Rob Shakir <robjs@google.com>; James Guichard <=
james.n.guichard@futurewei.com>; Joel M. Halpern <jmh@joelhalpern.com>
Subject: [spring] Leadership change

WG,

Rob had decided to step down as chair some time ago. There hasn't been any =
formal communication on that so I'd like, first, to thank Rob for his work =
and dedication to the group. Thank you very much Rob.

Since that time, I have been actively looking for one (or two) person(s) to=
 replace him. This has proven to be a very challenging endeavour!

But it has finally came to an end.

I am pleased to inform you that I have appointed Jim Guichard and Joel Halp=
ern as co-chairs of SPRING WG, alongside Bruno.
Thank you Jim, Thank you Joel, and thank you Bruno.


Martin
as AD for SPRING

_______________________________________________
spring mailing list
spring@ietf.org
https://www.ietf.org/mailman/listinfo/spring


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From: "Darren Dukes (ddukes)" <ddukes@cisco.com>
To: Aijun Wang <wangaj3@chinatelecom.cn>, "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: About the upper layer header processing in RFC8754(SRH)
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Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Hello Aijun.

No update to rfc8754 is necessary. Rfc8754 was written so new sids can be d=
efined in other documents independently.

section 4.3.1 says:

This document and section define a single SRv6 SID.  Future documents
   may define additional SRv6 SIDs.  In such a case, the entire content
   of this section will be defined in that document.


Thanks
  Darren
  (Written on mobile)

________________________________
From: ipv6 <ipv6-bounces@ietf.org> on behalf of Aijun Wang <wangaj3@chinate=
lecom.cn>
Sent: Sunday, June 14, 2020 10:15 PM
To: ipv6@ietf.org; spring@ietf.org
Subject: About the upper layer header processing in RFC8754(SRH)

Hi, Folks:
RFC8754(SRH) section 4.3.1.2(https://tools.ietf.org/html/rfc8754#section-4.=
3.1.2) describes the process of upper layer header as the followings:
IF (Upper-layer Header is IPv4 or IPv6) and
       local configuration permits {
     Perform IPv6 decapsulation
     Resubmit the decapsulated packet to the IPv4 or IPv6 module
   }
   ELSE {
   =85=85
}
And in network programming draft section 9.1(https://datatracker.ietf.org/d=
oc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1), one new=
 Ethernet Next Header Type(143) is proposed.

Although the detail process of this new next header are described in the ne=
twork program draft,  does it need to update the section 4.3.1.2 of RFC8754=
 to reflect the process of new header type(143)?

Best Regards

Aijun Wang
China Telecom


--_000_BN6PR11MB408100AFE4F435FED0F6F229C89C0BN6PR11MB4081namp_
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<div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
Hello Aijun.&nbsp;</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
<br>
</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
No update to rfc8754 is necessary. Rfc8754 was written so new sids can be d=
efined in other documents independently.&nbsp;</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
<br>
</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
<span>section 4.3.1 says:</span><br>
</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
<pre style=3D"font-size: 1em; margin-top: 0px; margin-bottom: 0px">This doc=
ument and section define a single SRv6 SID.  Future documents=0A=
   may define additional SRv6 SIDs.  In such a case, the entire content=0A=
   of this section will be defined in that document.</pre>
</div>
<br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr">Thanks</div>
<div dir=3D"ltr">&nbsp; Darren</div>
<div dir=3D"ltr">&nbsp; (Written on mobile)</div>
<div><br>
</div>
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<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif"><b=
>From:</b> ipv6 &lt;ipv6-bounces@ietf.org&gt; on behalf of Aijun Wang &lt;w=
angaj3@chinatelecom.cn&gt;<br>
<b>Sent:</b> Sunday, June 14, 2020 10:15 PM<br>
<b>To:</b> ipv6@ietf.org; spring@ietf.org<br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH)
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<p class=3D"MsoNormal"><span lang=3D"EN-US">Hi, Folks:</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">RFC8754(SRH) section 4.3.1.2(<a=
 href=3D"https://tools.ietf.org/html/rfc8754#section-4.3.1.2">https://tools=
.ietf.org/html/rfc8754#section-4.3.1.2</a>) describes the process of upper =
layer header as the followings:</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt; font-family:SimSun; color:black">IF (=
Upper-layer Header is IPv4 or IPv6) and</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt; font-family:SimSun; color:black">&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local configuration permits {</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt; font-family:SimSun; color:black">&nbs=
p;&nbsp;&nbsp;&nbsp; Perform IPv6 decapsulation</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt; font-family:SimSun; color:black">&nbs=
p;&nbsp;&nbsp;&nbsp; Resubmit the decapsulated packet to the IPv4 or IPv6 m=
odule</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt; font-family:SimSun; color:black">&nbs=
p;&nbsp; }</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt; font-family:SimSun; color:black">&nbs=
p;&nbsp; ELSE {</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10.0pt; font-family:SimSun; color:black">&nbs=
p;&nbsp; =85=85</span></p>
<p class=3D"MsoNormal" style=3D"text-indent:42.0pt"><span lang=3D"EN-US">}<=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">And in network programming draf=
t section 9.1(<a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-s=
pring-srv6-network-programming-15#section-9.1">https://datatracker.ietf.org=
/doc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Although the detail process of =
this new next header are described in the network program draft, &nbsp;does=
 it need to update the section 4.3.1.2 of RFC8754 to reflect the process of=
 new header type(143)?
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Best Regards</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Aijun Wang</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">China Telecom</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;</span></p>
</div>
</div>
</div>
</body>
</html>

--_000_BN6PR11MB408100AFE4F435FED0F6F229C89C0BN6PR11MB4081namp_--


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From: Rob Shakir <robjs@google.com>
Date: Mon, 15 Jun 2020 10:52:55 -0700
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To: Martin Vigoureux <martin.vigoureux@nokia.com>
Cc: "spring@ietf.org" <spring@ietf.org>, "6man@ietf.org" <6man@ietf.org>,  "int-ads@ietf.org" <int-ads@ietf.org>, "<rtg-ads@ietf.org>" <rtg-ads@ietf.org>, James Guichard <james.n.guichard@futurewei.com>, "Joel M. Halpern" <jmh@joelhalpern.com>,  "bruno.decraene@orange.com" <bruno.decraene@orange.com>
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--00000000000068e58905a8231927
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Thanks Martin.

I'm glad that we managed to get the SR-MPLS cluster standardised during my
time chairing the WG. Thanks to everyone for all the work on that.

As Martin mentioned, in November of last year I stepped back as
unfortunately my workload and personal circumstances are such that I am not
able to effectively dedicate time to SPRING. Thanks to Joel and Jim for
taking on this commitment.

Cheers,
r.



On Sun, Jun 14, 2020 at 1:25 PM Martin Vigoureux <martin.vigoureux@nokia.com>
wrote:

> WG,
>
> Rob had decided to step down as chair some time ago. There hasn't been
> any formal communication on that so I'd like, first, to thank Rob for
> his work and dedication to the group. Thank you very much Rob.
>
> Since that time, I have been actively looking for one (or two) person(s)
> to replace him. This has proven to be a very challenging endeavour!
>
> But it has finally came to an end.
>
> I am pleased to inform you that I have appointed Jim Guichard and Joel
> Halpern as co-chairs of SPRING WG, alongside Bruno.
> Thank you Jim, Thank you Joel, and thank you Bruno.
>
>
> Martin
> as AD for SPRING
>

--00000000000068e58905a8231927
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:arial,he=
lvetica,sans-serif">Thanks Martin.</div><div class=3D"gmail_default" style=
=3D"font-family:arial,helvetica,sans-serif"><br></div><div class=3D"gmail_d=
efault" style=3D"font-family:arial,helvetica,sans-serif">I&#39;m glad that =
we managed to get the SR-MPLS cluster standardised during my time chairing =
the WG. Thanks to everyone for all the work on that.</div><div class=3D"gma=
il_default" style=3D"font-family:arial,helvetica,sans-serif"><br></div><div=
 class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif">A=
s Martin mentioned, in November=C2=A0of last year I stepped back as unfortu=
nately my workload and personal circumstances are such that I am not able t=
o effectively dedicate time to SPRING. Thanks to Joel and Jim for taking on=
 this commitment.</div><div class=3D"gmail_default" style=3D"font-family:ar=
ial,helvetica,sans-serif"><br></div><div class=3D"gmail_default" style=3D"f=
ont-family:arial,helvetica,sans-serif">Cheers,</div><div class=3D"gmail_def=
ault" style=3D"font-family:arial,helvetica,sans-serif">r.</div><div class=
=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif"><br></d=
iv><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-s=
erif"><br></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">On Sun, Jun 14, 2020 at 1:25 PM Martin Vigoureux &lt;<a hre=
f=3D"mailto:martin.vigoureux@nokia.com">martin.vigoureux@nokia.com</a>&gt; =
wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0=
px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">WG,<br>
<br>
Rob had decided to step down as chair some time ago. There hasn&#39;t been =
<br>
any formal communication on that so I&#39;d like, first, to thank Rob for <=
br>
his work and dedication to the group. Thank you very much Rob.<br>
<br>
Since that time, I have been actively looking for one (or two) person(s) <b=
r>
to replace him. This has proven to be a very challenging endeavour!<br>
<br>
But it has finally came to an end.<br>
<br>
I am pleased to inform you that I have appointed Jim Guichard and Joel <br>
Halpern as co-chairs of SPRING WG, alongside Bruno.<br>
Thank you Jim, Thank you Joel, and thank you Bruno.<br>
<br>
<br>
Martin<br>
as AD for SPRING<br>
</blockquote></div>

--00000000000068e58905a8231927--


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From: "Voyer, Daniel" <daniel.voyer@bell.ca>
To: Martin Vigoureux <martin.vigoureux@nokia.com>, "spring@ietf.org" <spring@ietf.org>
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From: Ron Bonica <rbonica@juniper.net>
To: "Darren Dukes (ddukes)" <ddukes=40cisco.com@dmarc.ietf.org>, Aijun Wang <wangaj3@chinatelecom.cn>, "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: About the upper layer header processing in RFC8754(SRH)
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/uytbmBwz3Ln_oHMGQ_XSR3Gnlrs>
Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Darren,

Does the SID described in RFC 8754 represent any of the SIDs in the Network=
 Programming Draft? In any other document?

                                                                           =
   Ron



Juniper Business Use Only
From: ipv6 <ipv6-bounces@ietf.org> On Behalf Of Darren Dukes (ddukes)
Sent: Monday, June 15, 2020 12:21 PM
To: Aijun Wang <wangaj3@chinatelecom.cn>; ipv6@ietf.org; spring@ietf.org
Subject: Re: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hello Aijun.

No update to rfc8754 is necessary. Rfc8754 was written so new sids can be d=
efined in other documents independently.

section 4.3.1 says:

This document and section define a single SRv6 SID.  Future documents

   may define additional SRv6 SIDs.  In such a case, the entire content

   of this section will be defined in that document.


Thanks
  Darren
  (Written on mobile)

________________________________
From: ipv6 <ipv6-bounces@ietf.org<mailto:ipv6-bounces@ietf.org>> on behalf =
of Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>
Sent: Sunday, June 14, 2020 10:15 PM
To: ipv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf=
.org>
Subject: About the upper layer header processing in RFC8754(SRH)

Hi, Folks:
RFC8754(SRH) section 4.3.1.2(https://tools..ietf.org/html/rfc8754#section-4=
.3.1.2<https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*secti=
on-4.3.1.2__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5=
j3jjAVQJYjvxKIgrBz$>) describes the process of upper layer header as the fo=
llowings:
IF (Upper-layer Header is IPv4 or IPv6) and
       local configuration permits {
     Perform IPv6 decapsulation
     Resubmit the decapsulated packet to the IPv4 or IPv6 module
   }
   ELSE {
   ......
}
And in network programming draft section 9.1(https://datatracker.ietf.org/d=
oc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1<https://u=
rldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-ietf-spring-s=
rv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08=
UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$>), one new Ethernet Next He=
ader Type(143) is proposed.

Although the detail process of this new next header are described in the ne=
twork program draft,  does it need to update the section 4.3.1.2 of RFC8754=
 to reflect the process of new header type(143)?

Best Regards

Aijun Wang
China Telecom


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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif">Does the SID described in RFC 8754 represent any of=
 the SIDs in the Network Programming Draft? In any other document?<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
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sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
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sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron<o:p></o:p></span></p>
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0in 0in">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span st=
yle=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif">From:</=
span></b><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sa=
ns-serif"> ipv6 &lt;ipv6-bounces@ietf.org&gt;
<b>On Behalf Of </b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Monday, June 15, 2020 12:21 PM<br>
<b>To:</b> Aijun Wang &lt;wangaj3@chinatelecom.cn&gt;; ipv6@ietf.org; sprin=
g@ietf.org<br>
<b>Subject:</b> Re: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><o:p>&nbsp;=
</o:p></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b><=
span style=3D"font-family:&quot;Lato&quot;,sans-serif;color:black">[Externa=
l Email. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<div>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">Hello Aijun.&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">No update to rfc8754 is necessary. Rfc8754 was written so new sids =
can be defined in other documents independently.&nbsp;<o:p></o:p></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">section 4.3.1 says:<o:p></o:p></span></p>
</div>
<div>
<pre><span style=3D"font-size:11.0pt">This document and section define a si=
ngle SRv6 SID.&nbsp; Future documents<o:p></o:p></span></pre>
<pre><span style=3D"font-size:11.0pt">&nbsp;&nbsp; may define additional SR=
v6 SIDs.&nbsp; In such a case, the entire content<o:p></o:p></span></pre>
<pre><span style=3D"font-size:11.0pt">&nbsp;&nbsp; of this section will be =
defined in that document.</span><span style=3D"font-size:11.0pt;font-family=
:&quot;Courier New&quot;"><o:p></o:p></span></pre>
</div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt"><o:p>&nbsp;</o:p></=
span></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">&nbsp; Darren<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">&nbsp; (Written on mobile)<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
<div id=3D"id-c605c1dd-d42c-45cb-94c1-68ec305cf8dc">
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" noshade=3D"" style=3D"color:black" align=3D"ce=
nter">
</div>
<div id=3D"divRplyFwdMsg">
<p class=3D"MsoNormal"><b>From:</b> ipv6 &lt;<a href=3D"mailto:ipv6-bounces=
@ietf.org">ipv6-bounces@ietf.org</a>&gt; on behalf of Aijun Wang &lt;<a hre=
f=3D"mailto:wangaj3@chinatelecom.cn">wangaj3@chinatelecom.cn</a>&gt;<br>
<b>Sent:</b> Sunday, June 14, 2020 10:15 PM<br>
<b>To:</b> <a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"m=
ailto:spring@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH) <o:=
p></o:p></p>
<div>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<p class=3D"MsoNormal">Hi, Folks:<o:p></o:p></p>
<p class=3D"MsoNormal">RFC8754(SRH) section 4.3.1.2(<a href=3D"https://urld=
efense.com/v3/__https:/tools.ietf.org/html/rfc8754*section-4.3.1.2__;Iw!!NE=
t6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjvxKIgrBz$=
">https://tools..ietf.org/html/rfc8754#section-4.3.1.2</a>)
 describes the process of upper layer header as the followings:<o:p></o:p><=
/p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black">IF (Upper-layer Header=
 is IPv4 or IPv6) and</span><o:p></o:p></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp; local configuration permits {</span><o:p></o:p></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;&nbsp;&nbsp;&nbs=
p; Perform IPv6 decapsulation</span><o:p></o:p></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;&nbsp;&nbsp;&nbs=
p; Resubmit the decapsulated packet to the IPv4 or IPv6 module</span><o:p><=
/o:p></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;&nbsp; }</span><=
o:p></o:p></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;&nbsp; ELSE {</s=
pan><o:p></o:p></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;&nbsp; &#8230;&#=
8230;</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"text-indent:42.0pt">}<o:p></o:p></p>
<p class=3D"MsoNormal">And in network programming draft section 9.1(<a href=
=3D"https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-=
ietf-spring-srv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_Zb=
J6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$">https://datat=
racker.ietf.org/doc/html/draft-ietf-spring-srv6-network-programming-15#sect=
ion-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal">Although the detail process of this new next header =
are described in the network program draft, &nbsp;does it need to update th=
e section 4.3.1.2 of RFC8754 to reflect the process of new header type(143)=
?
<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal">Best Regards<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal">Aijun Wang<o:p></o:p></p>
<p class=3D"MsoNormal">China Telecom<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</body>
</html>

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From: Robert Raszuk <robert@raszuk.net>
Date: Mon, 15 Jun 2020 21:32:45 +0200
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To: Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>
Cc: "Darren Dukes (ddukes)" <ddukes=40cisco.com@dmarc.ietf.org>, Aijun Wang <wangaj3@chinatelecom.cn>,  "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
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Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Hi Ron,

I think this is not the question of RFC 8754.

To me (and trust me I am not alone) this is much more of the question what
IPv6 address means. How flexible we can use all bits regardless if we are
talking SRv6 or not.

Do we think that https://tools.ietf.org/html/rfc4291 section 2.5 still
holds ? Do we need to keep stretching notion of interface to logical
interfaces mapped to functions ?

Then take projects completely unrelated to segment routing ... don't we see
evident that we can encode a lot of useful information in the lowest
significant bits of the IPv6 address without each time proposing new RH ?

Best,
R.



On Mon, Jun 15, 2020 at 9:08 PM Ron Bonica <rbonica=3D
40juniper.net@dmarc.ietf.org> wrote:

> Darren,
>
>
>
> Does the SID described in RFC 8754 represent any of the SIDs in the
> Network Programming Draft? In any other document?
>
>
>
>
> Ron
>
>
>
>
>
> Juniper Business Use Only
>
> *From:* ipv6 <ipv6-bounces@ietf.org> *On Behalf Of *Darren Dukes (ddukes)
> *Sent:* Monday, June 15, 2020 12:21 PM
> *To:* Aijun Wang <wangaj3@chinatelecom.cn>; ipv6@ietf.org; spring@ietf.or=
g
> *Subject:* Re: About the upper layer header processing in RFC8754(SRH)
>
>
>
> *[External Email. Be cautious of content]*
>
>
>
> Hello Aijun.
>
>
>
> No update to rfc8754 is necessary. Rfc8754 was written so new sids can be
> defined in other documents independently.
>
>
>
> section 4.3.1 says:
>
> This document and section define a single SRv6 SID.  Future documents
>
>    may define additional SRv6 SIDs.  In such a case, the entire content
>
>    of this section will be defined in that document.
>
>
>
>
>
> Thanks
>
>   Darren
>
>   (Written on mobile)
>
>
> ------------------------------
>
> *From:* ipv6 <ipv6-bounces@ietf.org> on behalf of Aijun Wang <
> wangaj3@chinatelecom.cn>
> *Sent:* Sunday, June 14, 2020 10:15 PM
> *To:* ipv6@ietf.org; spring@ietf.org
> *Subject:* About the upper layer header processing in RFC8754(SRH)
>
>
>
> Hi, Folks:
>
> RFC8754(SRH) section 4.3.1.2(
> https://tools..ietf.org/html/rfc8754#section-4.3.1.2
> <https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*section-4=
.3.1.2__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jj=
AVQJYjvxKIgrBz$>)
> describes the process of upper layer header as the followings:
>
> IF (Upper-layer Header is IPv4 or IPv6) and
>
>        local configuration permits {
>
>      Perform IPv6 decapsulation
>
>      Resubmit the decapsulated packet to the IPv4 or IPv6 module
>
>    }
>
>    ELSE {
>
>    =E2=80=A6=E2=80=A6
>
> }
>
> And in network programming draft section 9.1(
> https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-prog=
ramming-15#section-9.1
> <https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-i=
etf-spring-srv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_ZbJ=
6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$>),
> one new Ethernet Next Header Type(143) is proposed.
>
>
>
> Although the detail process of this new next header are described in the
> network program draft,  does it need to update the section 4.3.1.2 of
> RFC8754 to reflect the process of new header type(143)?
>
>
>
> Best Regards
>
>
>
> Aijun Wang
>
> China Telecom
>
>
> --------------------------------------------------------------------
> IETF IPv6 working group mailing list
> ipv6@ietf.org
> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> --------------------------------------------------------------------
>

--0000000000004ed4f005a8247e9c
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Ron,<div><br></div><div>I think this is not the questio=
n of RFC 8754.=C2=A0</div><div><br></div><div>To me (and trust me I am not =
alone) this is much more of the question what IPv6 address means. How flexi=
ble we can use all bits regardless if we are talking SRv6 or not.=C2=A0</di=
v><div><br></div><div>Do we think that=C2=A0<a href=3D"https://tools.ietf.o=
rg/html/rfc4291">https://tools.ietf.org/html/rfc4291</a>=C2=A0section 2.5 s=
till holds ? Do we need to keep stretching notion of interface to logical i=
nterfaces mapped to functions ?=C2=A0</div><div><br></div><div>Then take pr=
ojects completely unrelated to segment=C2=A0routing ... don&#39;t we see ev=
ident that we can encode a lot of useful information in the lowest signific=
ant bits of the IPv6 address without each time proposing new RH ?=C2=A0</di=
v><div><br></div><div>Best,</div><div>R.</div><div><br></div><div><br></div=
></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr"=
>On Mon, Jun 15, 2020 at 9:08 PM Ron Bonica &lt;rbonica=3D<a href=3D"mailto=
:40juniper.net@dmarc.ietf.org">40juniper.net@dmarc.ietf.org</a>&gt; wrote:<=
br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8e=
x;border-left:1px solid rgb(204,204,204);padding-left:1ex">





<div lang=3D"EN-US">
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif">Darren,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif">Does the SID described in RFC 8754 represent any of the SIDs in t=
he Network Programming Draft? In any other document?<u></u><u></u></span></=
p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 Ron<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:11pt;font-family:Calibri,sans-serif"><u></u>=C2=A0<u></u></sp=
an></p>
<p align=3D"center" style=3D"margin:0in 0in 0.0001pt;text-align:center">
<span style=3D"font-size:7pt;color:black">Juniper Business Use Only</span><=
u></u><u></u></p>
<div>
<div style=3D"border-right:none;border-bottom:none;border-left:none;border-=
top:1pt solid rgb(225,225,225);padding:3pt 0in 0in">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span st=
yle=3D"font-size:11pt;font-family:Calibri,sans-serif">From:</span></b><span=
 style=3D"font-size:11pt;font-family:Calibri,sans-serif"> ipv6 &lt;<a href=
=3D"mailto:ipv6-bounces@ietf.org" target=3D"_blank">ipv6-bounces@ietf.org</=
a>&gt;
<b>On Behalf Of </b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Monday, June 15, 2020 12:21 PM<br>
<b>To:</b> Aijun Wang &lt;<a href=3D"mailto:wangaj3@chinatelecom.cn" target=
=3D"_blank">wangaj3@chinatelecom.cn</a>&gt;; <a href=3D"mailto:ipv6@ietf.or=
g" target=3D"_blank">ipv6@ietf.org</a>; <a href=3D"mailto:spring@ietf.org" =
target=3D"_blank">spring@ietf.org</a><br>
<b>Subject:</b> Re: About the upper layer header processing in RFC8754(SRH)=
<u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><u></u>=C2=
=A0<u></u></p>
<p class=3D"MsoNormal" style=3D"line-height:12pt;background:rgb(255,235,156=
)"><b><span style=3D"font-family:Lato,sans-serif;color:black">[External Ema=
il. Be cautious of content]<u></u><u></u></span></b></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif"><u></u>=C2=A0<u></u></span></p>
<div>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue,serif">Hell=
o Aijun.=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue,serif"><u><=
/u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue,serif">No u=
pdate to rfc8754 is necessary. Rfc8754 was written so new sids can be defin=
ed in other documents independently.=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue,serif"><u><=
/u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue,serif">sect=
ion 4.3.1 says:<u></u><u></u></span></p>
</div>
<div>
<pre><span style=3D"font-size:11pt">This document and section define a sing=
le SRv6 SID.=C2=A0 Future documents<u></u><u></u></span></pre>
<pre><span style=3D"font-size:11pt">=C2=A0=C2=A0 may define additional SRv6=
 SIDs.=C2=A0 In such a case, the entire content<u></u><u></u></span></pre>
<pre><span style=3D"font-size:11pt">=C2=A0=C2=A0 of this section will be de=
fined in that document.</span><span style=3D"font-size:11pt;font-family:&qu=
ot;Courier New&quot;"><u></u><u></u></span></pre>
</div>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt"><u></u>=C2=A0<u></u><=
/span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0 Darren<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0 (Written on mobile)<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
<div id=3D"gmail-m_569078935103441464id-c605c1dd-d42c-45cb-94c1-68ec305cf8d=
c">
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" noshade style=3D"color:black" align=3D"center"=
>
</div>
<div id=3D"gmail-m_569078935103441464divRplyFwdMsg">
<p class=3D"MsoNormal"><b>From:</b> ipv6 &lt;<a href=3D"mailto:ipv6-bounces=
@ietf.org" target=3D"_blank">ipv6-bounces@ietf.org</a>&gt; on behalf of Aij=
un Wang &lt;<a href=3D"mailto:wangaj3@chinatelecom.cn" target=3D"_blank">wa=
ngaj3@chinatelecom.cn</a>&gt;<br>
<b>Sent:</b> Sunday, June 14, 2020 10:15 PM<br>
<b>To:</b> <a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org=
</a>; <a href=3D"mailto:spring@ietf.org" target=3D"_blank">
spring@ietf.org</a><br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH) <u>=
</u><u></u></p>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
</div>
<div>
<p class=3D"MsoNormal">Hi, Folks:<u></u><u></u></p>
<p class=3D"MsoNormal">RFC8754(SRH) section 4.3.1.2(<a href=3D"https://urld=
efense.com/v3/__https:/tools.ietf.org/html/rfc8754*section-4.3.1.2__;Iw!!NE=
t6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjvxKIgrBz$=
" target=3D"_blank">https://tools..ietf.org/html/rfc8754#section-4.3.1.2</a=
>)
 describes the process of upper layer header as the followings:<u></u><u></=
u></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10pt;font-family:SimSun;color:black">IF (Upper-layer Header i=
s IPv4 or IPv6) and</span><u></u><u></u></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 local configuration permits {</span><u></u><u></u></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=C2=A0=C2=A0=C2=A0=
 Perform IPv6 decapsulation</span><u></u><u></u></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=C2=A0=C2=A0=C2=A0=
 Resubmit the decapsulated packet to the IPv4 or IPv6 module</span><u></u><=
u></u></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=C2=A0 }</span><u>=
</u><u></u></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=C2=A0 ELSE {</spa=
n><u></u><u></u></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span style=
=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=C2=A0 =E2=80=A6=
=E2=80=A6</span><u></u><u></u></p>
<p class=3D"MsoNormal" style=3D"text-indent:42pt">}<u></u><u></u></p>
<p class=3D"MsoNormal">And in network programming draft section 9.1(<a href=
=3D"https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-=
ietf-spring-srv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_Zb=
J6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$" target=3D"_bl=
ank">https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-p=
rogramming-15#section-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Although the detail process of this new next header =
are described in the network program draft, =C2=A0does it need to update th=
e section 4.3.1.2 of RFC8754 to reflect the process of new header type(143)=
?
<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Best Regards<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Aijun Wang<u></u><u></u></p>
<p class=3D"MsoNormal">China Telecom<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>

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Administrative Requests: <a href=3D"https://www.ietf.org/mailman/listinfo/i=
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info/ipv6</a><br>
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</blockquote></div>

--0000000000004ed4f005a8247e9c--


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From: Ron Bonica <rbonica@juniper.net>
To: Robert Raszuk <robert@raszuk.net>
CC: "Darren Dukes (ddukes)" <ddukes@cisco.com>, Aijun Wang <wangaj3@chinatelecom.cn>, "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: About the upper layer header processing in RFC8754(SRH)
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Date: Mon, 15 Jun 2020 21:26:35 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/MQ7HhYTMleTL5NLgbT6SHRGkK7M>
Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Robert,

While this is an interesting question, it is orthogonal to the question tha=
t I posed to Darren.

                                                                   Ron




Juniper Business Use Only
From: Robert Raszuk <robert@raszuk.net>
Sent: Monday, June 15, 2020 3:33 PM
To: Ron Bonica <rbonica@juniper.net>
Cc: Darren Dukes (ddukes) <ddukes@cisco.com>; Aijun Wang <wangaj3@chinatele=
com.cn>; ipv6@ietf.org; spring@ietf.org
Subject: Re: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hi Ron,

I think this is not the question of RFC 8754.

To me (and trust me I am not alone) this is much more of the question what =
IPv6 address means. How flexible we can use all bits regardless if we are t=
alking SRv6 or not.

Do we think that https://tools.ietf.org/html/rfc4291<https://urldefense.com=
/v3/__https:/tools.ietf.org/html/rfc4291__;!!NEt6yMaO-gk!VpA2yHsqImwMGaAtR4=
SPjzF6Ek2NKqm6gF4497TQ2fOFK-RBSZLDVLBl5ltmCnmb$> section 2.5 still holds ? =
Do we need to keep stretching notion of interface to logical interfaces map=
ped to functions ?

Then take projects completely unrelated to segment routing ... don't we see=
 evident that we can encode a lot of useful information in the lowest signi=
ficant bits of the IPv6 address without each time proposing new RH ?

Best,
R.



On Mon, Jun 15, 2020 at 9:08 PM Ron Bonica <rbonica=3D40juniper.net@dmarc.i=
etf.org<mailto:40juniper.net@dmarc.ietf.org>> wrote:
Darren,

Does the SID described in RFC 8754 represent any of the SIDs in the Network=
 Programming Draft? In any other document?

                                                                           =
   Ron



Juniper Business Use Only
From: ipv6 <ipv6-bounces@ietf.org<mailto:ipv6-bounces@ietf.org>> On Behalf =
Of Darren Dukes (ddukes)
Sent: Monday, June 15, 2020 12:21 PM
To: Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>; i=
pv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf.org>
Subject: Re: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hello Aijun.

No update to rfc8754 is necessary. Rfc8754 was written so new sids can be d=
efined in other documents independently.

section 4.3.1 says:

This document and section define a single SRv6 SID.  Future documents

   may define additional SRv6 SIDs.  In such a case, the entire content

   of this section will be defined in that document.


Thanks
  Darren
  (Written on mobile)

________________________________
From: ipv6 <ipv6-bounces@ietf.org<mailto:ipv6-bounces@ietf.org>> on behalf =
of Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>
Sent: Sunday, June 14, 2020 10:15 PM
To: ipv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf=
.org>
Subject: About the upper layer header processing in RFC8754(SRH)

Hi, Folks:
RFC8754(SRH) section 4.3.1.2(https://tools..ietf.org/html/rfc8754#section-4=
.3.1.2<https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*secti=
on-4.3.1.2__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5=
j3jjAVQJYjvxKIgrBz$>) describes the process of upper layer header as the fo=
llowings:
IF (Upper-layer Header is IPv4 or IPv6) and
       local configuration permits {
     Perform IPv6 decapsulation
     Resubmit the decapsulated packet to the IPv4 or IPv6 module
   }
   ELSE {
   ......
}
And in network programming draft section 9.1(https://datatracker.ietf.org/d=
oc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1<https://u=
rldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-ietf-spring-s=
rv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08=
UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$>), one new Ethernet Next He=
ader Type(143) is proposed.

Although the detail process of this new next header are described in the ne=
twork program draft,  does it need to update the section 4.3.1.2 of RFC8754=
 to reflect the process of new header type(143)?

Best Regards

Aijun Wang
China Telecom

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<div class=3D"WordSection1">
<p class=3D"MsoNormal">Robert,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">While this is an interesting question, it is orthogo=
nal to the question that I posed to Darren.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ron<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> Robert Raszuk &lt;robert@raszuk.net&gt;=
 <br>
<b>Sent:</b> Monday, June 15, 2020 3:33 PM<br>
<b>To:</b> Ron Bonica &lt;rbonica@juniper.net&gt;<br>
<b>Cc:</b> Darren Dukes (ddukes) &lt;ddukes@cisco.com&gt;; Aijun Wang &lt;w=
angaj3@chinatelecom.cn&gt;; ipv6@ietf.org; spring@ietf.org<br>
<b>Subject:</b> Re: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b><=
span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;colo=
r:black">[External Email. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<p class=3D"MsoNormal">Hi Ron, <o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">I think this is not the question of RFC 8754.&nbsp;<=
o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">To me (and trust me I am not alone) this is much mor=
e of the question what IPv6 address means. How flexible we can use all bits=
 regardless if we are talking SRv6 or not.&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Do we think that&nbsp;<a href=3D"https://urldefense.=
com/v3/__https:/tools.ietf.org/html/rfc4291__;!!NEt6yMaO-gk!VpA2yHsqImwMGaA=
tR4SPjzF6Ek2NKqm6gF4497TQ2fOFK-RBSZLDVLBl5ltmCnmb$">https://tools.ietf.org/=
html/rfc4291</a>&nbsp;section 2.5 still holds
 ? Do we need to keep stretching notion of interface to logical interfaces =
mapped to functions ?&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Then take projects completely unrelated to segment&n=
bsp;routing ... don't we see evident that we can encode a lot of useful inf=
ormation in the lowest significant bits of the IPv6 address without each ti=
me proposing new RH ?&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Best,<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">R.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<p class=3D"MsoNormal">On Mon, Jun 15, 2020 at 9:08 PM Ron Bonica &lt;rboni=
ca=3D<a href=3D"mailto:40juniper.net@dmarc.ietf.org">40juniper.net@dmarc.ie=
tf.org</a>&gt; wrote:<o:p></o:p></p>
</div>
<blockquote style=3D"border:none;border-left:solid #CCCCCC 1.0pt;padding:0i=
n 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-=
bottom:5.0pt">
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Darren,<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Does the SID described in RFC 8754 represent any of the SIDs in th=
e Network Programming Draft? In any other document?<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; Ron<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p align=3D"center" style=3D"margin:0in;margin-bottom:.0001pt;text-align:ce=
nter"><span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only=
</span><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><b>From:</b> ipv6 &lt;<a href=3D"mailto:ipv6-bounces@ietf.org" tar=
get=3D"_blank">ipv6-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Monday, June 15, 2020 12:21 PM<br>
<b>To:</b> Aijun Wang &lt;<a href=3D"mailto:wangaj3@chinatelecom.cn" target=
=3D"_blank">wangaj3@chinatelecom.cn</a>&gt;;
<a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org</a>; <a hr=
ef=3D"mailto:spring@ietf.org" target=3D"_blank">
spring@ietf.org</a><br>
<b>Subject:</b> Re: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;line-height:12.0pt;background:#FFEB9C">
<b><span style=3D"font-family:&quot;Lato&quot;,sans-serif;color:black">[Ext=
ernal Email. Be cautious of content]</span></b><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<div>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;HelveticaNeue&quot;,serif">Hello =
Aijun.&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;HelveticaNeue&quot;,serif">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;HelveticaNeue&quot;,serif">No upd=
ate to rfc8754 is necessary. Rfc8754 was written so new sids can be defined=
 in other documents independently.&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;HelveticaNeue&quot;,serif">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;HelveticaNeue&quot;,serif">sectio=
n 4.3.1 says:</span><o:p></o:p></p>
</div>
<div>
<pre><span style=3D"font-size:11.0pt">This document and section define a si=
ngle SRv6 SID.&nbsp; Future documents</span><o:p></o:p></pre>
<pre><span style=3D"font-size:11.0pt">&nbsp;&nbsp; may define additional SR=
v6 SIDs.&nbsp; In such a case, the entire content</span><o:p></o:p></pre>
<pre><span style=3D"font-size:11.0pt">&nbsp;&nbsp; of this section will be =
defined in that document.</span><o:p></o:p></pre>
</div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Thanks<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp; Darren<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp; (Written on mobile)<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
</div>
<div id=3D"gmail-m_569078935103441464id-c605c1dd-d42c-45cb-94c1-68ec305cf8d=
c">
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" noshade=3D"" style=3D"color:black" align=3D"ce=
nter">
</div>
<div id=3D"gmail-m_569078935103441464divRplyFwdMsg">
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><b>From:</b> ipv6 &lt;<a href=3D"mailto:ipv6-bounces@ietf.org" tar=
get=3D"_blank">ipv6-bounces@ietf.org</a>&gt; on behalf of Aijun Wang &lt;<a=
 href=3D"mailto:wangaj3@chinatelecom.cn" target=3D"_blank">wangaj3@chinatel=
ecom.cn</a>&gt;<br>
<b>Sent:</b> Sunday, June 14, 2020 10:15 PM<br>
<b>To:</b> <a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org=
</a>; <a href=3D"mailto:spring@ietf.org" target=3D"_blank">
spring@ietf.org</a><br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH) <o:=
p></o:p></p>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Hi, Folks:<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">RFC8754(SRH) section 4.3.1.2(<a href=3D"https://urldefense.com/v3/=
__https:/tools.ietf.org/html/rfc8754*section-4.3.1.2__;Iw!!NEt6yMaO-gk!W4_Z=
bJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjvxKIgrBz$" target=3D"_b=
lank">https://tools..ietf.org/html/rfc8754#section-4.3.1.2</a>)
 describes the process of upper layer header as the followings:<o:p></o:p><=
/p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">IF=
 (Upper-layer Header is IPv4 or IPv6) and</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local configuration permits {</span><o:p=
></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&n=
bsp;&nbsp;&nbsp;&nbsp; Perform IPv6 decapsulation</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&n=
bsp;&nbsp;&nbsp;&nbsp; Resubmit the decapsulated packet to the IPv4 or IPv6=
 module</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&n=
bsp;&nbsp; }</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&n=
bsp;&nbsp; ELSE {</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&n=
bsp;&nbsp; &#8230;&#8230;</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;text-indent:42.0pt">
}<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">And in network programming draft section 9.1(<a href=3D"https://ur=
ldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-ietf-spring-sr=
v6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08U=
Yd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$" target=3D"_blank">https://d=
atatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-programming-15#=
section-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Although the detail process of this new next header are described =
in the network program draft, &nbsp;does it need to update the section 4.3.=
1.2 of RFC8754 to reflect the process of
 new header type(143)? <o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Best Regards<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Aijun Wang<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">China Telecom<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
<p class=3D"MsoNormal">----------------------------------------------------=
----------------<br>
IETF IPv6 working group mailing list<br>
<a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org</a><br>
Administrative Requests: <a href=3D"https://urldefense.com/v3/__https:/www.=
ietf.org/mailman/listinfo/ipv6__;!!NEt6yMaO-gk!VpA2yHsqImwMGaAtR4SPjzF6Ek2N=
Kqm6gF4497TQ2fOFK-RBSZLDVLBl5gomzxK4$" target=3D"_blank">
https://www.ietf.org/mailman/listinfo/ipv6</a><br>
--------------------------------------------------------------------<o:p></=
o:p></p>
</blockquote>
</div>
</div>
</div>
</body>
</html>

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From: Robert Raszuk <robert@raszuk.net>
Date: Mon, 15 Jun 2020 23:30:32 +0200
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To: Ron Bonica <rbonica@juniper.net>
Cc: "Darren Dukes (ddukes)" <ddukes@cisco.com>, Aijun Wang <wangaj3@chinatelecom.cn>,  "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
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Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Hi Ron,

True !

But pls do not take my response as an attempt to derail your shot. It was
rather a delicate attempt to put it on the right tracks towards the truth
target.

Best,
Robert.

On Mon, Jun 15, 2020 at 11:26 PM Ron Bonica <rbonica@juniper.net> wrote:

> Robert,
>
>
>
> While this is an interesting question, it is orthogonal to the question
> that I posed to Darren.
>
>
>
>                                                                    Ron
>
>
>
>
>
>
>
> Juniper Business Use Only
>
> *From:* Robert Raszuk <robert@raszuk.net>
> *Sent:* Monday, June 15, 2020 3:33 PM
> *To:* Ron Bonica <rbonica@juniper.net>
> *Cc:* Darren Dukes (ddukes) <ddukes@cisco.com>; Aijun Wang <
> wangaj3@chinatelecom.cn>; ipv6@ietf.org; spring@ietf.org
> *Subject:* Re: About the upper layer header processing in RFC8754(SRH)
>
>
>
> *[External Email. Be cautious of content]*
>
>
>
> Hi Ron,
>
>
>
> I think this is not the question of RFC 8754.
>
>
>
> To me (and trust me I am not alone) this is much more of the question wha=
t
> IPv6 address means. How flexible we can use all bits regardless if we are
> talking SRv6 or not.
>
>
>
> Do we think that https://tools.ietf.org/html/rfc4291
> <https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc4291__;!!NEt6y=
MaO-gk!VpA2yHsqImwMGaAtR4SPjzF6Ek2NKqm6gF4497TQ2fOFK-RBSZLDVLBl5ltmCnmb$> s=
ection
> 2.5 still holds ? Do we need to keep stretching notion of interface to
> logical interfaces mapped to functions ?
>
>
>
> Then take projects completely unrelated to segment routing ... don't we
> see evident that we can encode a lot of useful information in the lowest
> significant bits of the IPv6 address without each time proposing new RH ?
>
>
>
> Best,
>
> R.
>
>
>
>
>
>
>
> On Mon, Jun 15, 2020 at 9:08 PM Ron Bonica <rbonica=3D
> 40juniper.net@dmarc.ietf.org> wrote:
>
> Darren,
>
>
>
> Does the SID described in RFC 8754 represent any of the SIDs in the
> Network Programming Draft? In any other document?
>
>
>
>
> Ron
>
>
>
>
>
> Juniper Business Use Only
>
> *From:* ipv6 <ipv6-bounces@ietf.org> *On Behalf Of *Darren Dukes (ddukes)
> *Sent:* Monday, June 15, 2020 12:21 PM
> *To:* Aijun Wang <wangaj3@chinatelecom.cn>; ipv6@ietf.org; spring@ietf.or=
g
> *Subject:* Re: About the upper layer header processing in RFC8754(SRH)
>
>
>
> *[External Email. Be cautious of content]*
>
>
>
> Hello Aijun.
>
>
>
> No update to rfc8754 is necessary. Rfc8754 was written so new sids can be
> defined in other documents independently.
>
>
>
> section 4.3.1 says:
>
> This document and section define a single SRv6 SID.  Future documents
>
>    may define additional SRv6 SIDs.  In such a case, the entire content
>
>    of this section will be defined in that document.
>
>
>
>
>
> Thanks
>
>   Darren
>
>   (Written on mobile)
>
>
> ------------------------------
>
> *From:* ipv6 <ipv6-bounces@ietf.org> on behalf of Aijun Wang <
> wangaj3@chinatelecom.cn>
> *Sent:* Sunday, June 14, 2020 10:15 PM
> *To:* ipv6@ietf.org; spring@ietf.org
> *Subject:* About the upper layer header processing in RFC8754(SRH)
>
>
>
> Hi, Folks:
>
> RFC8754(SRH) section 4.3.1.2(
> https://tools..ietf.org/html/rfc8754#section-4.3.1.2
> <https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*section-4=
.3.1.2__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jj=
AVQJYjvxKIgrBz$>)
> describes the process of upper layer header as the followings:
>
> IF (Upper-layer Header is IPv4 or IPv6) and
>
>        local configuration permits {
>
>      Perform IPv6 decapsulation
>
>      Resubmit the decapsulated packet to the IPv4 or IPv6 module
>
>    }
>
>    ELSE {
>
>    =E2=80=A6=E2=80=A6
>
> }
>
> And in network programming draft section 9.1(
> https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-prog=
ramming-15#section-9.1
> <https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-i=
etf-spring-srv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_ZbJ=
6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$>),
> one new Ethernet Next Header Type(143) is proposed.
>
>
>
> Although the detail process of this new next header are described in the
> network program draft,  does it need to update the section 4.3.1.2 of
> RFC8754 to reflect the process of new header type(143)?
>
>
>
> Best Regards
>
>
>
> Aijun Wang
>
> China Telecom
>
>
>
> --------------------------------------------------------------------
> IETF IPv6 working group mailing list
> ipv6@ietf.org
> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> <https://urldefense.com/v3/__https:/www.ietf.org/mailman/listinfo/ipv6__;=
!!NEt6yMaO-gk!VpA2yHsqImwMGaAtR4SPjzF6Ek2NKqm6gF4497TQ2fOFK-RBSZLDVLBl5gomz=
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> --------------------------------------------------------------------
>
>

--0000000000009cb72805a8262384
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Ron,<div><br></div><div>True !=C2=A0</div><div><br></di=
v><div>But pls do not take my response as an attempt to derail your shot. I=
t was rather a delicate attempt to put it on the right tracks towards the t=
ruth target.=C2=A0</div><div><br></div><div>Best,</div><div>Robert.</div></=
div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On=
 Mon, Jun 15, 2020 at 11:26 PM Ron Bonica &lt;<a href=3D"mailto:rbonica@jun=
iper.net">rbonica@juniper.net</a>&gt; wrote:<br></div><blockquote class=3D"=
gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(20=
4,204,204);padding-left:1ex">





<div lang=3D"EN-US">
<div class=3D"gmail-m_8273008625074508598WordSection1">
<p class=3D"MsoNormal">Robert,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">While this is an interesting question, it is orthogo=
nal to the question that I posed to Darren.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Ron<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"gmail-m_8273008625074508598msipfooter30b3d538" align=3D"center"=
 style=3D"margin:0in 0in 0.0001pt;text-align:center">
<span style=3D"font-size:7pt;color:black">Juniper Business Use Only</span><=
u></u><u></u></p>
<div>
<div style=3D"border-right:none;border-bottom:none;border-left:none;border-=
top:1pt solid rgb(225,225,225);padding:3pt 0in 0in">
<p class=3D"MsoNormal"><b>From:</b> Robert Raszuk &lt;<a href=3D"mailto:rob=
ert@raszuk.net" target=3D"_blank">robert@raszuk.net</a>&gt; <br>
<b>Sent:</b> Monday, June 15, 2020 3:33 PM<br>
<b>To:</b> Ron Bonica &lt;<a href=3D"mailto:rbonica@juniper.net" target=3D"=
_blank">rbonica@juniper.net</a>&gt;<br>
<b>Cc:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com" ta=
rget=3D"_blank">ddukes@cisco.com</a>&gt;; Aijun Wang &lt;<a href=3D"mailto:=
wangaj3@chinatelecom.cn" target=3D"_blank">wangaj3@chinatelecom.cn</a>&gt;;=
 <a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org</a>; <a h=
ref=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br>
<b>Subject:</b> Re: About the upper layer header processing in RFC8754(SRH)=
<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal" style=3D"line-height:12pt;background:rgb(255,235,156=
)"><b><span style=3D"font-size:10.5pt;font-family:Lato,sans-serif;color:bla=
ck">[External Email. Be cautious of content]<u></u><u></u></span></b></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal">Hi Ron, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">I think this is not the question of RFC 8754.=C2=A0<=
u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">To me (and trust me I am not alone) this is much mor=
e of the question what IPv6 address means. How flexible we can use all bits=
 regardless if we are talking SRv6 or not.=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Do we think that=C2=A0<a href=3D"https://urldefense.=
com/v3/__https:/tools.ietf.org/html/rfc4291__;!!NEt6yMaO-gk!VpA2yHsqImwMGaA=
tR4SPjzF6Ek2NKqm6gF4497TQ2fOFK-RBSZLDVLBl5ltmCnmb$" target=3D"_blank">https=
://tools.ietf.org/html/rfc4291</a>=C2=A0section 2.5 still holds
 ? Do we need to keep stretching notion of interface to logical interfaces =
mapped to functions ?=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Then take projects completely unrelated to segment=
=C2=A0routing ... don&#39;t we see evident that we can encode a lot of usef=
ul information in the lowest significant bits of the IPv6 address without e=
ach time proposing new RH ?=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Best,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">R.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal">On Mon, Jun 15, 2020 at 9:08 PM Ron Bonica &lt;rboni=
ca=3D<a href=3D"mailto:40juniper.net@dmarc.ietf.org" target=3D"_blank">40ju=
niper.net@dmarc.ietf.org</a>&gt; wrote:<u></u><u></u></p>
</div>
<blockquote style=3D"border-top:none;border-right:none;border-bottom:none;b=
order-left:1pt solid rgb(204,204,204);padding:0in 0in 0in 6pt;margin:5pt 0i=
n 5pt 4.8pt">
<div>
<div>
<p class=3D"MsoNormal">Darren,<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Does the SID described in RFC 8754 represent any of =
the SIDs in the Network Programming Draft? In any other document?<u></u><u>=
</u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Ron<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p align=3D"center" style=3D"margin:0in 0in 0.0001pt;text-align:center"><sp=
an style=3D"font-size:7pt;color:black">Juniper Business Use Only</span><u><=
/u><u></u></p>
<div>
<div style=3D"border-right:none;border-bottom:none;border-left:none;border-=
top:1pt solid rgb(225,225,225);padding:3pt 0in 0in">
<p class=3D"MsoNormal"><b>From:</b> ipv6 &lt;<a href=3D"mailto:ipv6-bounces=
@ietf.org" target=3D"_blank">ipv6-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Monday, June 15, 2020 12:21 PM<br>
<b>To:</b> Aijun Wang &lt;<a href=3D"mailto:wangaj3@chinatelecom.cn" target=
=3D"_blank">wangaj3@chinatelecom.cn</a>&gt;;
<a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org</a>; <a hr=
ef=3D"mailto:spring@ietf.org" target=3D"_blank">
spring@ietf.org</a><br>
<b>Subject:</b> Re: About the upper layer header processing in RFC8754(SRH)=
<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal" style=3D"line-height:12pt;background:rgb(255,235,156=
)">
<b><span style=3D"font-family:Lato,sans-serif;color:black">[External Email.=
 Be cautious of content]</span></b><u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<div>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue,serif">Hell=
o Aijun.=C2=A0</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue,serif">=C2=
=A0</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue,serif">No u=
pdate to rfc8754 is necessary. Rfc8754 was written so new sids can be defin=
ed in other documents independently.=C2=A0</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue,serif">=C2=
=A0</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue,serif">sect=
ion 4.3.1 says:</span><u></u><u></u></p>
</div>
<div>
<pre><span style=3D"font-size:11pt">This document and section define a sing=
le SRv6 SID.=C2=A0 Future documents</span><u></u><u></u></pre>
<pre><span style=3D"font-size:11pt">=C2=A0=C2=A0 may define additional SRv6=
 SIDs.=C2=A0 In such a case, the entire content</span><u></u><u></u></pre>
<pre><span style=3D"font-size:11pt">=C2=A0=C2=A0 of this section will be de=
fined in that document.</span><u></u><u></u></pre>
</div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0 Darren<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0 (Written on mobile)<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
</div>
<div id=3D"gmail-m_8273008625074508598gmail-m_569078935103441464id-c605c1dd=
-d42c-45cb-94c1-68ec305cf8dc">
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" noshade style=3D"color:black" align=3D"center"=
>
</div>
<div id=3D"gmail-m_8273008625074508598gmail-m_569078935103441464divRplyFwdM=
sg">
<p class=3D"MsoNormal"><b>From:</b> ipv6 &lt;<a href=3D"mailto:ipv6-bounces=
@ietf.org" target=3D"_blank">ipv6-bounces@ietf.org</a>&gt; on behalf of Aij=
un Wang &lt;<a href=3D"mailto:wangaj3@chinatelecom.cn" target=3D"_blank">wa=
ngaj3@chinatelecom.cn</a>&gt;<br>
<b>Sent:</b> Sunday, June 14, 2020 10:15 PM<br>
<b>To:</b> <a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org=
</a>; <a href=3D"mailto:spring@ietf.org" target=3D"_blank">
spring@ietf.org</a><br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH) <u>=
</u><u></u></p>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
</div>
<div>
<p class=3D"MsoNormal">Hi, Folks:<u></u><u></u></p>
<p class=3D"MsoNormal">RFC8754(SRH) section 4.3.1.2(<a href=3D"https://urld=
efense.com/v3/__https:/tools.ietf.org/html/rfc8754*section-4.3.1.2__;Iw!!NE=
t6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjvxKIgrBz$=
" target=3D"_blank">https://tools..ietf.org/html/rfc8754#section-4.3.1.2</a=
>)
 describes the process of upper layer header as the followings:<u></u><u></=
u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:SimSun;col=
or:black">IF (Upper-layer Header is IPv4 or IPv6) and</span><u></u><u></u><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:SimSun;col=
or:black">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 local configuration permits =
{</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:SimSun;col=
or:black">=C2=A0=C2=A0=C2=A0=C2=A0 Perform IPv6 decapsulation</span><u></u>=
<u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:SimSun;col=
or:black">=C2=A0=C2=A0=C2=A0=C2=A0 Resubmit the decapsulated packet to the =
IPv4 or IPv6 module</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:SimSun;col=
or:black">=C2=A0=C2=A0 }</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:SimSun;col=
or:black">=C2=A0=C2=A0 ELSE {</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:SimSun;col=
or:black">=C2=A0=C2=A0 =E2=80=A6=E2=80=A6</span><u></u><u></u></p>
<p class=3D"MsoNormal" style=3D"text-indent:42pt">
}<u></u><u></u></p>
<p class=3D"MsoNormal">And in network programming draft section 9.1(<a href=
=3D"https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-=
ietf-spring-srv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_Zb=
J6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$" target=3D"_bl=
ank">https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-p=
rogramming-15#section-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Although the detail process of this new next header =
are described in the network program draft, =C2=A0does it need to update th=
e section 4.3.1.2 of RFC8754 to reflect the process of
 new header type(143)? <u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Best Regards<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Aijun Wang<u></u><u></u></p>
<p class=3D"MsoNormal">China Telecom<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
<p class=3D"MsoNormal">----------------------------------------------------=
----------------<br>
IETF IPv6 working group mailing list<br>
<a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org</a><br>
Administrative Requests: <a href=3D"https://urldefense.com/v3/__https:/www.=
ietf.org/mailman/listinfo/ipv6__;!!NEt6yMaO-gk!VpA2yHsqImwMGaAtR4SPjzF6Ek2N=
Kqm6gF4497TQ2fOFK-RBSZLDVLBl5gomzxK4$" target=3D"_blank">
https://www.ietf.org/mailman/listinfo/ipv6</a><br>
--------------------------------------------------------------------<u></u>=
<u></u></p>
</blockquote>
</div>
</div>
</div>
</div>

</blockquote></div>

--0000000000009cb72805a8262384--


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From: Mark Smith <markzzzsmith@gmail.com>
Date: Tue, 16 Jun 2020 07:51:41 +1000
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To: Robert Raszuk <robert@raszuk.net>
Cc: Ron Bonica <rbonica@juniper.net>, Aijun Wang <wangaj3@chinatelecom.cn>,  "spring@ietf.org" <spring@ietf.org>, "ipv6@ietf.org" <ipv6@ietf.org>
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Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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On Tue, 16 Jun 2020 at 07:31, Robert Raszuk <robert@raszuk.net> wrote:
>
> Hi Ron,
>
> True !
>
> But pls do not take my response as an attempt to derail your shot. It was=
 rather a delicate attempt to put it on the right tracks towards the truth =
target.
>

The IPv6 addressing model is 25 years old, going by the publication
date of RFC 1881 (1995).

IPv6 is like a 25 year old house. The purpose of some rooms is
flexible or somewhat flexible - a bedroom can be turned into a study,
or, depending on where it is located, a lounge room can be used as a
bedroom.

Other rooms in the house are fixed purpose and either are impossible
to change, or cannot be changed without a massive expense. It is
almost impossible to effectively change a kitchen into a bedroom, or a
bathroom into a kitchen.

At some point the house can't effectively be changed, and it is better
to design a new house. IPv6 isn't a house that is on the drawing board
any more, or is a house that is early in its construction such that
rooms' functions can be easily changed with minimal consequences.

If SPRING want a new forwarding architecture and a new addressing
architecture, then a new house needs to be designed.

Regards,
Mark.

> Best,
> Robert.
>
> On Mon, Jun 15, 2020 at 11:26 PM Ron Bonica <rbonica@juniper.net> wrote:
>>
>> Robert,
>>
>>
>>
>> While this is an interesting question, it is orthogonal to the question =
that I posed to Darren.
>>
>>
>>
>>                                                                    Ron
>>
>>
>>
>>
>>
>>
>>
>> Juniper Business Use Only
>>
>> From: Robert Raszuk <robert@raszuk.net>
>> Sent: Monday, June 15, 2020 3:33 PM
>> To: Ron Bonica <rbonica@juniper.net>
>> Cc: Darren Dukes (ddukes) <ddukes@cisco.com>; Aijun Wang <wangaj3@chinat=
elecom.cn>; ipv6@ietf.org; spring@ietf.org
>> Subject: Re: About the upper layer header processing in RFC8754(SRH)
>>
>>
>>
>> [External Email. Be cautious of content]
>>
>>
>>
>> Hi Ron,
>>
>>
>>
>> I think this is not the question of RFC 8754.
>>
>>
>>
>> To me (and trust me I am not alone) this is much more of the question wh=
at IPv6 address means. How flexible we can use all bits regardless if we ar=
e talking SRv6 or not.
>>
>>
>>
>> Do we think that https://tools.ietf.org/html/rfc4291 section 2.5 still h=
olds ? Do we need to keep stretching notion of interface to logical interfa=
ces mapped to functions ?
>>
>>
>>
>> Then take projects completely unrelated to segment routing ... don't we =
see evident that we can encode a lot of useful information in the lowest si=
gnificant bits of the IPv6 address without each time proposing new RH ?
>>
>>
>>
>> Best,
>>
>> R.
>>
>>
>>
>>
>>
>>
>>
>> On Mon, Jun 15, 2020 at 9:08 PM Ron Bonica <rbonica=3D40juniper.net@dmar=
c.ietf.org> wrote:
>>
>> Darren,
>>
>>
>>
>> Does the SID described in RFC 8754 represent any of the SIDs in the Netw=
ork Programming Draft? In any other document?
>>
>>
>>
>>                                                                         =
      Ron
>>
>>
>>
>>
>>
>> Juniper Business Use Only
>>
>> From: ipv6 <ipv6-bounces@ietf.org> On Behalf Of Darren Dukes (ddukes)
>> Sent: Monday, June 15, 2020 12:21 PM
>> To: Aijun Wang <wangaj3@chinatelecom.cn>; ipv6@ietf.org; spring@ietf.org
>> Subject: Re: About the upper layer header processing in RFC8754(SRH)
>>
>>
>>
>> [External Email. Be cautious of content]
>>
>>
>>
>> Hello Aijun.
>>
>>
>>
>> No update to rfc8754 is necessary. Rfc8754 was written so new sids can b=
e defined in other documents independently.
>>
>>
>>
>> section 4.3.1 says:
>>
>> This document and section define a single SRv6 SID.  Future documents
>>
>>    may define additional SRv6 SIDs.  In such a case, the entire content
>>
>>    of this section will be defined in that document.
>>
>>
>>
>>
>>
>> Thanks
>>
>>   Darren
>>
>>   (Written on mobile)
>>
>>
>>
>> ________________________________
>>
>> From: ipv6 <ipv6-bounces@ietf.org> on behalf of Aijun Wang <wangaj3@chin=
atelecom.cn>
>> Sent: Sunday, June 14, 2020 10:15 PM
>> To: ipv6@ietf.org; spring@ietf.org
>> Subject: About the upper layer header processing in RFC8754(SRH)
>>
>>
>>
>> Hi, Folks:
>>
>> RFC8754(SRH) section 4.3.1.2(https://tools..ietf.org/html/rfc8754#sectio=
n-4.3.1.2) describes the process of upper layer header as the followings:
>>
>> IF (Upper-layer Header is IPv4 or IPv6) and
>>
>>        local configuration permits {
>>
>>      Perform IPv6 decapsulation
>>
>>      Resubmit the decapsulated packet to the IPv4 or IPv6 module
>>
>>    }
>>
>>    ELSE {
>>
>>    =E2=80=A6=E2=80=A6
>>
>> }
>>
>> And in network programming draft section 9.1(https://datatracker.ietf.or=
g/doc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1), one =
new Ethernet Next Header Type(143) is proposed.
>>
>>
>>
>> Although the detail process of this new next header are described in the=
 network program draft,  does it need to update the section 4.3.1.2 of RFC8=
754 to reflect the process of new header type(143)?
>>
>>
>>
>> Best Regards
>>
>>
>>
>> Aijun Wang
>>
>> China Telecom
>>
>>
>>
>> --------------------------------------------------------------------
>> IETF IPv6 working group mailing list
>> ipv6@ietf.org
>> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
>> --------------------------------------------------------------------
>
> --------------------------------------------------------------------
> IETF IPv6 working group mailing list
> ipv6@ietf.org
> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> --------------------------------------------------------------------


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From: Robert Raszuk <robert@raszuk.net>
Date: Tue, 16 Jun 2020 00:03:32 +0200
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To: Mark Smith <markzzzsmith@gmail.com>
Cc: Ron Bonica <rbonica@juniper.net>, Aijun Wang <wangaj3@chinatelecom.cn>,  "spring@ietf.org" <spring@ietf.org>, "ipv6@ietf.org" <ipv6@ietf.org>
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Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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--0000000000009873f005a8269918
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Hey Mark,

Thank you for presenting your house architectural perspective.

Mine is much simpler ... I compare IPv6 128 bits of address to a train.

First 64 bits is a locomotive and undercarriage which we better leave
alone.

However what goes into the remaining 64 bits are passengers travelling
along. As such some may be just tourists, some may be monks having
completely different missions in life. Yet another set may be gold miners
etc ... I really do not see a need to redo the train in general just to
accommodate different types of passengers to travel along. IMHO there is a
room there for all of the above.

Sure changing ethertype and designing new tracks is a very attractive
option. So is shortening the train engine to reduce the overhead - and I do
like those (in fact proposed some of this already both publicly and
privately), but Ron's mail is a bit shooting in between.

Anyhow I will leave it at that here,

Best,
R.

On Mon, Jun 15, 2020 at 11:52 PM Mark Smith <markzzzsmith@gmail.com> wrote:

> On Tue, 16 Jun 2020 at 07:31, Robert Raszuk <robert@raszuk.net> wrote:
> >
> > Hi Ron,
> >
> > True !
> >
> > But pls do not take my response as an attempt to derail your shot. It
> was rather a delicate attempt to put it on the right tracks towards the
> truth target.
> >
>
> The IPv6 addressing model is 25 years old, going by the publication
> date of RFC 1881 (1995).
>
> IPv6 is like a 25 year old house. The purpose of some rooms is
> flexible or somewhat flexible - a bedroom can be turned into a study,
> or, depending on where it is located, a lounge room can be used as a
> bedroom.
>
> Other rooms in the house are fixed purpose and either are impossible
> to change, or cannot be changed without a massive expense. It is
> almost impossible to effectively change a kitchen into a bedroom, or a
> bathroom into a kitchen.
>
> At some point the house can't effectively be changed, and it is better
> to design a new house. IPv6 isn't a house that is on the drawing board
> any more, or is a house that is early in its construction such that
> rooms' functions can be easily changed with minimal consequences.
>
> If SPRING want a new forwarding architecture and a new addressing
> architecture, then a new house needs to be designed.
>
> Regards,
> Mark.
>
> > Best,
> > Robert.
> >
> > On Mon, Jun 15, 2020 at 11:26 PM Ron Bonica <rbonica@juniper.net> wrote=
:
> >>
> >> Robert,
> >>
> >>
> >>
> >> While this is an interesting question, it is orthogonal to the questio=
n
> that I posed to Darren.
> >>
> >>
> >>
> >>                                                                    Ron
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> Juniper Business Use Only
> >>
> >> From: Robert Raszuk <robert@raszuk.net>
> >> Sent: Monday, June 15, 2020 3:33 PM
> >> To: Ron Bonica <rbonica@juniper.net>
> >> Cc: Darren Dukes (ddukes) <ddukes@cisco.com>; Aijun Wang <
> wangaj3@chinatelecom.cn>; ipv6@ietf.org; spring@ietf.org
> >> Subject: Re: About the upper layer header processing in RFC8754(SRH)
> >>
> >>
> >>
> >> [External Email. Be cautious of content]
> >>
> >>
> >>
> >> Hi Ron,
> >>
> >>
> >>
> >> I think this is not the question of RFC 8754.
> >>
> >>
> >>
> >> To me (and trust me I am not alone) this is much more of the question
> what IPv6 address means. How flexible we can use all bits regardless if w=
e
> are talking SRv6 or not.
> >>
> >>
> >>
> >> Do we think that https://tools.ietf.org/html/rfc4291 section 2.5 still
> holds ? Do we need to keep stretching notion of interface to logical
> interfaces mapped to functions ?
> >>
> >>
> >>
> >> Then take projects completely unrelated to segment routing ... don't w=
e
> see evident that we can encode a lot of useful information in the lowest
> significant bits of the IPv6 address without each time proposing new RH ?
> >>
> >>
> >>
> >> Best,
> >>
> >> R.
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> On Mon, Jun 15, 2020 at 9:08 PM Ron Bonica <rbonica=3D
> 40juniper.net@dmarc.ietf.org> wrote:
> >>
> >> Darren,
> >>
> >>
> >>
> >> Does the SID described in RFC 8754 represent any of the SIDs in the
> Network Programming Draft? In any other document?
> >>
> >>
> >>
> >>
>        Ron
> >>
> >>
> >>
> >>
> >>
> >> Juniper Business Use Only
> >>
> >> From: ipv6 <ipv6-bounces@ietf.org> On Behalf Of Darren Dukes (ddukes)
> >> Sent: Monday, June 15, 2020 12:21 PM
> >> To: Aijun Wang <wangaj3@chinatelecom.cn>; ipv6@ietf.org;
> spring@ietf.org
> >> Subject: Re: About the upper layer header processing in RFC8754(SRH)
> >>
> >>
> >>
> >> [External Email. Be cautious of content]
> >>
> >>
> >>
> >> Hello Aijun.
> >>
> >>
> >>
> >> No update to rfc8754 is necessary. Rfc8754 was written so new sids can
> be defined in other documents independently.
> >>
> >>
> >>
> >> section 4.3.1 says:
> >>
> >> This document and section define a single SRv6 SID.  Future documents
> >>
> >>    may define additional SRv6 SIDs.  In such a case, the entire conten=
t
> >>
> >>    of this section will be defined in that document.
> >>
> >>
> >>
> >>
> >>
> >> Thanks
> >>
> >>   Darren
> >>
> >>   (Written on mobile)
> >>
> >>
> >>
> >> ________________________________
> >>
> >> From: ipv6 <ipv6-bounces@ietf.org> on behalf of Aijun Wang <
> wangaj3@chinatelecom.cn>
> >> Sent: Sunday, June 14, 2020 10:15 PM
> >> To: ipv6@ietf.org; spring@ietf.org
> >> Subject: About the upper layer header processing in RFC8754(SRH)
> >>
> >>
> >>
> >> Hi, Folks:
> >>
> >> RFC8754(SRH) section 4.3.1.2(https://tools..
> ietf.org/html/rfc8754#section-4.3.1.2) describes the process of upper
> layer header as the followings:
> >>
> >> IF (Upper-layer Header is IPv4 or IPv6) and
> >>
> >>        local configuration permits {
> >>
> >>      Perform IPv6 decapsulation
> >>
> >>      Resubmit the decapsulated packet to the IPv4 or IPv6 module
> >>
> >>    }
> >>
> >>    ELSE {
> >>
> >>    =E2=80=A6=E2=80=A6
> >>
> >> }
> >>
> >> And in network programming draft section 9.1(
> https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-prog=
ramming-15#section-9.1),
> one new Ethernet Next Header Type(143) is proposed.
> >>
> >>
> >>
> >> Although the detail process of this new next header are described in
> the network program draft,  does it need to update the section 4.3.1.2 of
> RFC8754 to reflect the process of new header type(143)?
> >>
> >>
> >>
> >> Best Regards
> >>
> >>
> >>
> >> Aijun Wang
> >>
> >> China Telecom
> >>
> >>
> >>
> >> --------------------------------------------------------------------
> >> IETF IPv6 working group mailing list
> >> ipv6@ietf.org
> >> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> >> --------------------------------------------------------------------
> >
> > --------------------------------------------------------------------
> > IETF IPv6 working group mailing list
> > ipv6@ietf.org
> > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> > --------------------------------------------------------------------
>

--0000000000009873f005a8269918
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hey Mark,<div><br></div><div>Thank you for presenting your=
 house architectural perspective.=C2=A0</div><div><br></div><div>Mine is mu=
ch simpler ... I compare IPv6 128 bits of address to a train.=C2=A0</div><d=
iv><br></div><div>First 64 bits is a locomotive and undercarriage which we =
better leave alone.=C2=A0</div><div><br></div><div>However what goes into t=
he remaining 64 bits are passengers travelling along. As such some may be j=
ust tourists, some may be monks having completely different missions in lif=
e. Yet another set may be gold miners etc ... I really do not see a need to=
 redo the train in general just to accommodate=C2=A0different=C2=A0types of=
 passengers to travel along. IMHO there is a room there for all of the abov=
e.</div><div><br></div><div>Sure changing ethertype and designing new track=
s is a very attractive option. So is shortening the train engine to reduce =
the=C2=A0overhead - and I do like those (in fact proposed some of this alre=
ady both publicly and privately), but Ron&#39;s mail is a bit shooting in b=
etween.=C2=A0</div><div><br></div><div>Anyhow I will leave it at that here,=
=C2=A0</div><div><br></div><div>Best,<br>R.</div></div><br><div class=3D"gm=
ail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Jun 15, 2020 at 11=
:52 PM Mark Smith &lt;<a href=3D"mailto:markzzzsmith@gmail.com">markzzzsmit=
h@gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding=
-left:1ex">On Tue, 16 Jun 2020 at 07:31, Robert Raszuk &lt;<a href=3D"mailt=
o:robert@raszuk.net" target=3D"_blank">robert@raszuk.net</a>&gt; wrote:<br>
&gt;<br>
&gt; Hi Ron,<br>
&gt;<br>
&gt; True !<br>
&gt;<br>
&gt; But pls do not take my response as an attempt to derail your shot. It =
was rather a delicate attempt to put it on the right tracks towards the tru=
th target.<br>
&gt;<br>
<br>
The IPv6 addressing model is 25 years old, going by the publication<br>
date of RFC 1881 (1995).<br>
<br>
IPv6 is like a 25 year old house. The purpose of some rooms is<br>
flexible or somewhat flexible - a bedroom can be turned into a study,<br>
or, depending on where it is located, a lounge room can be used as a<br>
bedroom.<br>
<br>
Other rooms in the house are fixed purpose and either are impossible<br>
to change, or cannot be changed without a massive expense. It is<br>
almost impossible to effectively change a kitchen into a bedroom, or a<br>
bathroom into a kitchen.<br>
<br>
At some point the house can&#39;t effectively be changed, and it is better<=
br>
to design a new house. IPv6 isn&#39;t a house that is on the drawing board<=
br>
any more, or is a house that is early in its construction such that<br>
rooms&#39; functions can be easily changed with minimal consequences.<br>
<br>
If SPRING want a new forwarding architecture and a new addressing<br>
architecture, then a new house needs to be designed.<br>
<br>
Regards,<br>
Mark.<br>
<br>
&gt; Best,<br>
&gt; Robert.<br>
&gt;<br>
&gt; On Mon, Jun 15, 2020 at 11:26 PM Ron Bonica &lt;<a href=3D"mailto:rbon=
ica@juniper.net" target=3D"_blank">rbonica@juniper.net</a>&gt; wrote:<br>
&gt;&gt;<br>
&gt;&gt; Robert,<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; While this is an interesting question, it is orthogonal to the que=
stion that I posed to Darren.<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 Ron<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Juniper Business Use Only<br>
&gt;&gt;<br>
&gt;&gt; From: Robert Raszuk &lt;<a href=3D"mailto:robert@raszuk.net" targe=
t=3D"_blank">robert@raszuk.net</a>&gt;<br>
&gt;&gt; Sent: Monday, June 15, 2020 3:33 PM<br>
&gt;&gt; To: Ron Bonica &lt;<a href=3D"mailto:rbonica@juniper.net" target=
=3D"_blank">rbonica@juniper.net</a>&gt;<br>
&gt;&gt; Cc: Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com" =
target=3D"_blank">ddukes@cisco.com</a>&gt;; Aijun Wang &lt;<a href=3D"mailt=
o:wangaj3@chinatelecom.cn" target=3D"_blank">wangaj3@chinatelecom.cn</a>&gt=
;; <a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org</a>; <a=
 href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br>
&gt;&gt; Subject: Re: About the upper layer header processing in RFC8754(SR=
H)<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; [External Email. Be cautious of content]<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Hi Ron,<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; I think this is not the question of RFC 8754.<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; To me (and trust me I am not alone) this is much more of the quest=
ion what IPv6 address means. How flexible we can use all bits regardless if=
 we are talking SRv6 or not.<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Do we think that <a href=3D"https://tools.ietf.org/html/rfc4291" r=
el=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html/rfc4291</a>=
 section 2.5 still holds ? Do we need to keep stretching notion of interfac=
e to logical interfaces mapped to functions ?<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Then take projects completely unrelated to segment routing ... don=
&#39;t we see evident that we can encode a lot of useful information in the=
 lowest significant bits of the IPv6 address without each time proposing ne=
w RH ?<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Best,<br>
&gt;&gt;<br>
&gt;&gt; R.<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; On Mon, Jun 15, 2020 at 9:08 PM Ron Bonica &lt;rbonica=3D<a href=
=3D"mailto:40juniper.net@dmarc.ietf.org" target=3D"_blank">40juniper.net@dm=
arc.ietf.org</a>&gt; wrote:<br>
&gt;&gt;<br>
&gt;&gt; Darren,<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Does the SID described in RFC 8754 represent any of the SIDs in th=
e Network Programming Draft? In any other document?<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Ron<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Juniper Business Use Only<br>
&gt;&gt;<br>
&gt;&gt; From: ipv6 &lt;<a href=3D"mailto:ipv6-bounces@ietf.org" target=3D"=
_blank">ipv6-bounces@ietf.org</a>&gt; On Behalf Of Darren Dukes (ddukes)<br=
>
&gt;&gt; Sent: Monday, June 15, 2020 12:21 PM<br>
&gt;&gt; To: Aijun Wang &lt;<a href=3D"mailto:wangaj3@chinatelecom.cn" targ=
et=3D"_blank">wangaj3@chinatelecom.cn</a>&gt;; <a href=3D"mailto:ipv6@ietf.=
org" target=3D"_blank">ipv6@ietf.org</a>; <a href=3D"mailto:spring@ietf.org=
" target=3D"_blank">spring@ietf.org</a><br>
&gt;&gt; Subject: Re: About the upper layer header processing in RFC8754(SR=
H)<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; [External Email. Be cautious of content]<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Hello Aijun.<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; No update to rfc8754 is necessary. Rfc8754 was written so new sids=
 can be defined in other documents independently.<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; section 4.3.1 says:<br>
&gt;&gt;<br>
&gt;&gt; This document and section define a single SRv6 SID.=C2=A0 Future d=
ocuments<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 may define additional SRv6 SIDs.=C2=A0 In such a case=
, the entire content<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 of this section will be defined in that document.<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Thanks<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0Darren<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0(Written on mobile)<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; ________________________________<br>
&gt;&gt;<br>
&gt;&gt; From: ipv6 &lt;<a href=3D"mailto:ipv6-bounces@ietf.org" target=3D"=
_blank">ipv6-bounces@ietf.org</a>&gt; on behalf of Aijun Wang &lt;<a href=
=3D"mailto:wangaj3@chinatelecom.cn" target=3D"_blank">wangaj3@chinatelecom.=
cn</a>&gt;<br>
&gt;&gt; Sent: Sunday, June 14, 2020 10:15 PM<br>
&gt;&gt; To: <a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.o=
rg</a>; <a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.or=
g</a><br>
&gt;&gt; Subject: About the upper layer header processing in RFC8754(SRH)<b=
r>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Hi, Folks:<br>
&gt;&gt;<br>
&gt;&gt; RFC8754(SRH) section 4.3.1.2(<a href=3D"https://tools." rel=3D"nor=
eferrer" target=3D"_blank">https://tools.</a>.<a href=3D"http://ietf.org/ht=
ml/rfc8754#section-4.3.1.2" rel=3D"noreferrer" target=3D"_blank">ietf.org/h=
tml/rfc8754#section-4.3.1.2</a>) describes the process of upper layer heade=
r as the followings:<br>
&gt;&gt;<br>
&gt;&gt; IF (Upper-layer Header is IPv4 or IPv6) and<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 local configuration permits {<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 Perform IPv6 decapsulation<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 Resubmit the decapsulated packet to the IPv4 o=
r IPv6 module<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 }<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 ELSE {<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =E2=80=A6=E2=80=A6<br>
&gt;&gt;<br>
&gt;&gt; }<br>
&gt;&gt;<br>
&gt;&gt; And in network programming draft section 9.1(<a href=3D"https://da=
tatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-programming-15#s=
ection-9.1" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.o=
rg/doc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1</a>),=
 one new Ethernet Next Header Type(143) is proposed.<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Although the detail process of this new next header are described =
in the network program draft,=C2=A0 does it need to update the section 4.3.=
1.2 of RFC8754 to reflect the process of new header type(143)?<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Best Regards<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Aijun Wang<br>
&gt;&gt;<br>
&gt;&gt; China Telecom<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; ------------------------------------------------------------------=
--<br>
&gt;&gt; IETF IPv6 working group mailing list<br>
&gt;&gt; <a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org</=
a><br>
&gt;&gt; Administrative Requests: <a href=3D"https://www.ietf.org/mailman/l=
istinfo/ipv6" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mai=
lman/listinfo/ipv6</a><br>
&gt;&gt; ------------------------------------------------------------------=
--<br>
&gt;<br>
&gt; --------------------------------------------------------------------<b=
r>
&gt; IETF IPv6 working group mailing list<br>
&gt; <a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org</a><b=
r>
&gt; Administrative Requests: <a href=3D"https://www.ietf.org/mailman/listi=
nfo/ipv6" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman=
/listinfo/ipv6</a><br>
&gt; --------------------------------------------------------------------<b=
r>
</blockquote></div>

--0000000000009873f005a8269918--


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Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Hi Jingrong and Arjun

I believe what Daren is pointing out is that section 4.3.1 is referencing
RFC 8200 for next header processing.  Since that is stated in the beginning
of section 4 and pertains to all sub sections I believe  that would
suffice.  For SRv6 PGM draft I agree section 4 needs updating.  I think
that got clipped in Darens post.


4.3.1 <https://tools.ietf.org/html/rfc8754#section-4.3.1>.  FIB Entry
Is a Locally Instantiated SRv6 SID

   This document and section define a single SRv6 SID.  Future documents
   may define additional SRv6 SIDs.  In such a case, the entire content
   of this section will be defined in that document.

   If the FIB entry represents a locally instantiated SRv6 SID, process
   the next header chain of the IPv6 header as defined in Section 4 of
   [RFC8200] <https://tools.ietf.org/html/rfc8200#section-4>.  Section
4.3.1.1 <https://tools.ietf.org/html/rfc8754#section-4.3.1.1>
describes how to process an SRH;
   Section 4.3.1.2
<https://tools.ietf.org/html/rfc8754#section-4.3.1.2> describes how to
process an upper-layer header or the
   absence of a Next Header.


Kind Regards

Gyan

On Mon, Jun 15, 2020 at 12:21 PM Darren Dukes (ddukes) <ddukes=3D
40cisco.com@dmarc.ietf.org> wrote:

> Hello Aijun.
>
> No update to rfc8754 is necessary. Rfc8754 was written so new sids can be
> defined in other documents independently.
>
> section 4.3.1 says:
>
> This document and section define a single SRv6 SID.  Future documents
>    may define additional SRv6 SIDs.  In such a case, the entire content
>    of this section will be defined in that document.
>
>
>
> Thanks
>   Darren
>   (Written on mobile)
>
> ------------------------------
> *From:* ipv6 <ipv6-bounces@ietf.org> on behalf of Aijun Wang <
> wangaj3@chinatelecom.cn>
> *Sent:* Sunday, June 14, 2020 10:15 PM
> *To:* ipv6@ietf.org; spring@ietf.org
> *Subject:* About the upper layer header processing in RFC8754(SRH)
>
>
> Hi, Folks:
>
> RFC8754(SRH) section 4.3.1.2(
> https://tools..ietf.org/html/rfc8754#section-4.3.1.2
> <https://tools.ietf.org/html/rfc8754#section-4.3.1.2>) describes the
> process of upper layer header as the followings:
>
> IF (Upper-layer Header is IPv4 or IPv6) and
>
>        local configuration permits {
>
>      Perform IPv6 decapsulation
>
>      Resubmit the decapsulated packet to the IPv4 or IPv6 module
>
>    }
>
>    ELSE {
>
>    =E2=80=A6=E2=80=A6
>
> }
>
> And in network programming draft section 9.1(
> https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-prog=
ramming-15#section-9.1),
> one new Ethernet Next Header Type(143) is proposed.
>
>
>
> Although the detail process of this new next header are described in the
> network program draft,  does it need to update the section 4.3.1.2 of
> RFC8754 to reflect the process of new header type(143)?
>
>
>
> Best Regards
>
>
>
> Aijun Wang
>
> China Telecom
>
>
> --------------------------------------------------------------------
> IETF IPv6 working group mailing list
> ipv6@ietf.org
> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> --------------------------------------------------------------------
>
--=20

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--0000000000008d25ae05a82750a7
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<div><div dir=3D"auto">Hi Jingrong and Arjun</div></div><div dir=3D"auto"><=
br></div><div dir=3D"auto">I believe what Daren is pointing out is that sec=
tion 4.3.1 is referencing RFC 8200 for next header processing.=C2=A0 Since =
that is stated in the beginning of section 4 and pertains to all sub sectio=
ns I believe =C2=A0that would suffice.=C2=A0 For SRv6 PGM draft I agree sec=
tion 4 needs updating.=C2=A0 I think that got clipped in Darens post.</div>=
<div dir=3D"auto"><br></div><div dir=3D"auto"><br></div><div dir=3D"auto"><=
pre style=3D"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:mon=
ospace"><span class=3D"h4" style=3D"display:inline;font-size:1em;font-weigh=
t:bold;font-family:monospace"><h4 style=3D"display:inline;font-size:1em;fon=
t-family:monospace"><a class=3D"selflink" name=3D"section-4.3.1" href=3D"ht=
tps://tools.ietf.org/html/rfc8754#section-4.3.1" style=3D"text-decoration:n=
one;font-family:monospace;color:black">4.3.1</a>.  FIB Entry Is a Locally I=
nstantiated SRv6 SID</h4></span>

   This document and section define a single SRv6 SID.  Future documents
   may define additional SRv6 SIDs.  In such a case, the entire content
   of this section will be defined in that document.

   If the FIB entry represents a locally instantiated SRv6 SID, process
   the next header chain of the IPv6 header as defined in <a href=3D"https:=
//tools.ietf.org/html/rfc8200#section-4" style=3D"font-family:monospace">Se=
ction=C2=A04 of
   [RFC8200]</a>.  <a href=3D"https://tools.ietf.org/html/rfc8754#section-4=
.3.1.1" style=3D"font-family:monospace">Section 4.3.1.1</a> describes how t=
o process an SRH;
   <a href=3D"https://tools.ietf.org/html/rfc8754#section-4.3.1.2" style=3D=
"font-family:monospace">Section 4.3.1.2</a> describes how to process an upp=
er-layer header or the
   absence of a Next Header.</pre></div><div dir=3D"auto"><br></div><div di=
r=3D"auto">Kind Regards=C2=A0</div><div dir=3D"auto"><br></div><div dir=3D"=
auto">Gyan</div><div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">On Mon, Jun 15, 2020 at 12:21 PM Darren Dukes (ddukes) &lt;=
ddukes=3D<a href=3D"mailto:40cisco.com@dmarc.ietf.org">40cisco.com@dmarc.ie=
tf.org</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"m=
argin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;paddi=
ng-left:1ex;border-left-color:rgb(204,204,204)">



<div>
<div dir=3D"ltr">
<div></div>
<div>
<div>
<div dir=3D"ltr">
Hello Aijun.=C2=A0</div>
<div dir=3D"ltr">
<br>
</div>
<div dir=3D"ltr">
No update to rfc8754 is necessary. Rfc8754 was written so new sids can be d=
efined in other documents independently.=C2=A0</div>
<div dir=3D"ltr">
<br>
</div>
<div dir=3D"ltr">
<span>section 4.3.1 says:</span><br>
</div>
<div dir=3D"ltr">
<pre style=3D"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:mo=
nospace">This document and section define a single SRv6 SID.  Future docume=
nts
   may define additional SRv6 SIDs.  In such a case, the entire content
   of this section will be defined in that document.</pre>
</div>
<br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr">Thanks</div>
<div dir=3D"ltr">=C2=A0 Darren</div>
<div dir=3D"ltr">=C2=A0 (Written on mobile)</div>
<div><br>
</div>
<div></div>
</div>
<div id=3D"m_-1002759348568167263id-c605c1dd-d42c-45cb-94c1-68ec305cf8dc">
<hr style=3D"display:inline-block;width:98%;font-family:-webkit-standard;fo=
nt-size:12pt;color:rgb(0,0,0)">
<div id=3D"m_-1002759348568167263divRplyFwdMsg" dir=3D"ltr"><font face=3D"C=
alibri, sans-serif" style=3D"font-family:Calibri,sans-serif;color:rgb(0,0,0=
)"><b style=3D"font-family:Calibri,sans-serif">From:</b> ipv6 &lt;<a href=
=3D"mailto:ipv6-bounces@ietf.org" target=3D"_blank" style=3D"font-family:Ca=
libri,sans-serif">ipv6-bounces@ietf.org</a>&gt; on behalf of Aijun Wang &lt=
;<a href=3D"mailto:wangaj3@chinatelecom.cn" target=3D"_blank" style=3D"font=
-family:Calibri,sans-serif">wangaj3@chinatelecom.cn</a>&gt;<br>
<b style=3D"font-family:Calibri,sans-serif">Sent:</b> Sunday, June 14, 2020=
 10:15 PM<br>
<b style=3D"font-family:Calibri,sans-serif">To:</b> <a href=3D"mailto:ipv6@=
ietf.org" target=3D"_blank" style=3D"font-family:Calibri,sans-serif">ipv6@i=
etf.org</a>; <a href=3D"mailto:spring@ietf.org" target=3D"_blank" style=3D"=
font-family:Calibri,sans-serif">spring@ietf.org</a><br>
<b style=3D"font-family:Calibri,sans-serif">Subject:</b> About the upper la=
yer header processing in RFC8754(SRH)
<div style=3D"font-family:Calibri,sans-serif">=C2=A0</div>
</font></div>



<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Hi, Folks:</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">RFC8754(SRH) section 4.3.1.2(<a=
 href=3D"https://tools.ietf.org/html/rfc8754#section-4.3.1.2" target=3D"_bl=
ank">https://tools..ietf.org/html/rfc8754#section-4.3.1.2</a>) describes th=
e process of upper layer header as the followings:</span></p></div></div></=
div></div><div><div dir=3D"ltr"><div id=3D"m_-1002759348568167263id-c605c1d=
d-d42c-45cb-94c1-68ec305cf8dc"><div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">IF (Uppe=
r-layer Header is IPv4 or IPv6) and</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 local configuration permits {</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=
=C2=A0=C2=A0=C2=A0 Perform IPv6 decapsulation</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=
=C2=A0=C2=A0=C2=A0 Resubmit the decapsulated packet to the IPv4 or IPv6 mod=
ule</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=
=C2=A0 }</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=
=C2=A0 ELSE {</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=
=C2=A0 =E2=80=A6=E2=80=A6</span></p>
<p class=3D"MsoNormal" style=3D"text-indent:42pt"><span lang=3D"EN-US">}</s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">And in network programming draf=
t section 9.1(<a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-s=
pring-srv6-network-programming-15#section-9.1" target=3D"_blank">https://da=
tatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-programming-15#s=
ection-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Although the detail process of =
this new next header are described in the network program draft, =C2=A0does=
 it need to update the section 4.3.1.2 of RFC8754 to reflect the process of=
 new header type(143)?
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Best Regards</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Aijun Wang</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">China Telecom</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
</div>
</div>
</div>
</div>

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</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
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tr"><div><p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com=
/" style=3D"color:rgb(17,85,204);padding-bottom:1em;display:inline-block" t=
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a><br></p><p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NH=
G DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b=
></p><p style=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font fac=
e=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutio=
ns A</i></font><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=
=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px;line-height:13px;=
color:black"><i><font face=3D"georgia, serif">M 301 502-1347<br>13101 Colum=
bia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div></di=
v></div></div></div></div></div></div></div>

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Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Question regarding the IANA request for ethernet protocol number for SRV6.

https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml


143 Ethernet Ethernet (TEMPORARY - registered 2020-01-31, expires
2021-01-31)

The ethernet protocol number request does seem odd as the protocol number
or next header is usually the upper layer protocol and not lower link
layer.

Is this for the 6in6 encapsulation that occurs on the SR source node ?

The next header would be IPv6 not ethernet I would think.


Gyan





On Mon, Jun 15, 2020 at 6:54 PM Gyan Mishra <hayabusagsm@gmail.com> wrote:

> Hi Jingrong and Arjun
>
> I believe what Daren is pointing out is that section 4.3.1 is referencing
> RFC 8200 for next header processing.  Since that is stated in the beginni=
ng
> of section 4 and pertains to all sub sections I believe  that would
> suffice.  For SRv6 PGM draft I agree section 4 needs updating.  I think
> that got clipped in Darens post.
>
>
> 4.3.1 <https://tools.ietf.org/html/rfc8754#section-4.3.1>.  FIB Entry Is =
a Locally Instantiated SRv6 SID
>
>    This document and section define a single SRv6 SID.  Future documents
>    may define additional SRv6 SIDs.  In such a case, the entire content
>    of this section will be defined in that document.
>
>    If the FIB entry represents a locally instantiated SRv6 SID, process
>    the next header chain of the IPv6 header as defined in Section 4 of
>    [RFC8200] <https://tools.ietf.org/html/rfc8200#section-4>.  Section 4.=
3.1.1 <https://tools.ietf.org/html/rfc8754#section-4.3.1.1> describes how t=
o process an SRH;
>    Section 4.3.1.2 <https://tools.ietf.org/html/rfc8754#section-4.3.1.2> =
describes how to process an upper-layer header or the
>    absence of a Next Header.
>
>
> Kind Regards
>
> Gyan
>
> On Mon, Jun 15, 2020 at 12:21 PM Darren Dukes (ddukes) <ddukes=3D
> 40cisco.com@dmarc.ietf.org> wrote:
>
>> Hello Aijun.
>>
>> No update to rfc8754 is necessary. Rfc8754 was written so new sids can b=
e
>> defined in other documents independently.
>>
>> section 4.3.1 says:
>>
>> This document and section define a single SRv6 SID.  Future documents
>>    may define additional SRv6 SIDs.  In such a case, the entire content
>>    of this section will be defined in that document.
>>
>>
>>
>> Thanks
>>   Darren
>>   (Written on mobile)
>>
>> ------------------------------
>> *From:* ipv6 <ipv6-bounces@ietf.org> on behalf of Aijun Wang <
>> wangaj3@chinatelecom.cn>
>> *Sent:* Sunday, June 14, 2020 10:15 PM
>> *To:* ipv6@ietf.org; spring@ietf.org
>> *Subject:* About the upper layer header processing in RFC8754(SRH)
>>
>>
>> Hi, Folks:
>>
>> RFC8754(SRH) section 4.3.1.2(
>> https://tools..ietf.org/html/rfc8754#section-4.3.1.2
>> <https://tools.ietf.org/html/rfc8754#section-4.3.1.2>) describes the
>> process of upper layer header as the followings:
>>
>> IF (Upper-layer Header is IPv4 or IPv6) and
>>
>>        local configuration permits {
>>
>>      Perform IPv6 decapsulation
>>
>>      Resubmit the decapsulated packet to the IPv4 or IPv6 module
>>
>>    }
>>
>>    ELSE {
>>
>>    =E2=80=A6=E2=80=A6
>>
>> }
>>
>> And in network programming draft section 9.1(
>> https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-pro=
gramming-15#section-9.1),
>> one new Ethernet Next Header Type(143) is proposed.
>>
>>
>>
>> Although the detail process of this new next header are described in the
>> network program draft,  does it need to update the section 4.3.1.2 of
>> RFC8754 to reflect the process of new header type(143)?
>>
>>
>>
>> Best Regards
>>
>>
>>
>> Aijun Wang
>>
>> China Telecom
>>
>>
>> --------------------------------------------------------------------
>> IETF IPv6 working group mailing list
>> ipv6@ietf.org
>> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
>> --------------------------------------------------------------------
>>
> --
>
> <http://www.verizon.com/>
>
> *Gyan Mishra*
>
> *Network Solutions A**rchitect *
>
>
>
> *M 301 502-134713101 Columbia Pike *Silver Spring, MD
>
> --

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--0000000000001d3ccd05a8278377
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div><br></div><div><div dir=3D"auto">Question regarding the IANA request f=
or ethernet protocol number for SRV6.</div><div dir=3D"auto"><br></div><div=
 dir=3D"auto"><div><a href=3D"https://www.iana.org/assignments/protocol-num=
bers/protocol-numbers.xhtml">https://www.iana.org/assignments/protocol-numb=
ers/protocol-numbers.xhtml</a></div><br></div><div dir=3D"auto"><br></div><=
div dir=3D"auto"><table id=3D"table-protocol-numbers-1" class=3D"sortable" =
style=3D"border-collapse:collapse;border:0px;margin:1em 0px;font-family:&qu=
ot;Open Sans&quot;,&quot;Helvetica Neue&quot;,Helvetica,sans-serif;font-siz=
e:13.333333015441895px"><tbody style=3D"font-family:&quot;Open Sans&quot;,&=
quot;Helvetica Neue&quot;,Helvetica,sans-serif"><tr style=3D"border-top-wid=
th:1px;border-top-style:solid;font-family:&quot;Open Sans&quot;,&quot;Helve=
tica Neue&quot;,Helvetica,sans-serif;border-top-color:rgb(236,239,248)"><td=
 align=3D"center" style=3D"padding-left:0.5em;padding-right:0.5em;vertical-=
align:top;font-family:&quot;Open Sans&quot;,&quot;Helvetica Neue&quot;,Helv=
etica,sans-serif">143</td><td style=3D"padding-left:0.5em;padding-right:0.5=
em;vertical-align:top;font-family:&quot;Open Sans&quot;,&quot;Helvetica Neu=
e&quot;,Helvetica,sans-serif">Ethernet</td><td style=3D"padding-left:0.5em;=
padding-right:0.5em;vertical-align:top;font-family:&quot;Open Sans&quot;,&q=
uot;Helvetica Neue&quot;,Helvetica,sans-serif">Ethernet (TEMPORARY - regist=
ered 2020-01-31, expires 2021-01-31)</td></tr></tbody></table></div><div di=
r=3D"auto"><br></div><div dir=3D"auto">The ethernet protocol number request=
 does seem odd as the protocol number or next header is usually the upper l=
ayer protocol and not lower link layer.=C2=A0</div><div dir=3D"auto"><br></=
div><div dir=3D"auto">Is this for the 6in6 encapsulation that occurs on the=
 SR source node ? =C2=A0</div><div dir=3D"auto"><br></div><div dir=3D"auto"=
>The next header would be IPv6 not ethernet I would think.=C2=A0</div><div =
dir=3D"auto"><br></div><div dir=3D"auto"><br></div><div dir=3D"auto">Gyan</=
div><div dir=3D"auto"><br></div><div dir=3D"auto"><br></div><div dir=3D"aut=
o"><br></div><div dir=3D"auto"><br></div><br><div class=3D"gmail_quote"><di=
v dir=3D"ltr" class=3D"gmail_attr">On Mon, Jun 15, 2020 at 6:54 PM Gyan Mis=
hra &lt;<a href=3D"mailto:hayabusagsm@gmail.com">hayabusagsm@gmail.com</a>&=
gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0=
px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex=
;border-left-color:rgb(204,204,204)"><div><div dir=3D"auto">Hi Jingrong and=
 Arjun</div></div><div dir=3D"auto"><br></div><div dir=3D"auto">I believe w=
hat Daren is pointing out is that section 4.3.1 is referencing RFC 8200 for=
 next header processing.=C2=A0 Since that is stated in the beginning of sec=
tion 4 and pertains to all sub sections I believe =C2=A0that would suffice.=
=C2=A0 For SRv6 PGM draft I agree section 4 needs updating.=C2=A0 I think t=
hat got clipped in Darens post.</div><div dir=3D"auto"><br></div><div dir=
=3D"auto"><br></div><div dir=3D"auto"><pre style=3D"font-size:1em;margin-to=
p:0px;margin-bottom:0px;font-family:monospace"><span style=3D"display:inlin=
e;font-size:1em;font-weight:bold;font-family:monospace"><h4 style=3D"displa=
y:inline;font-size:1em;font-family:monospace"><a name=3D"m_-856305308079073=
2859_section-4.3.1" href=3D"https://tools.ietf.org/html/rfc8754#section-4.3=
.1" style=3D"text-decoration:none;font-family:monospace;color:black" target=
=3D"_blank">4.3.1</a>.  FIB Entry Is a Locally Instantiated SRv6 SID</h4></=
span>

   This document and section define a single SRv6 SID.  Future documents
   may define additional SRv6 SIDs.  In such a case, the entire content
   of this section will be defined in that document.

   If the FIB entry represents a locally instantiated SRv6 SID, process
   the next header chain of the IPv6 header as defined in <a href=3D"https:=
//tools.ietf.org/html/rfc8200#section-4" style=3D"font-family:monospace" ta=
rget=3D"_blank">Section=C2=A04 of
   [RFC8200]</a>.  <a href=3D"https://tools.ietf.org/html/rfc8754#section-4=
.3.1.1" style=3D"font-family:monospace" target=3D"_blank">Section 4.3.1.1</=
a> describes how to process an SRH;
   <a href=3D"https://tools.ietf.org/html/rfc8754#section-4.3.1.2" style=3D=
"font-family:monospace" target=3D"_blank">Section 4.3.1.2</a> describes how=
 to process an upper-layer header or the
   absence of a Next Header.</pre></div><div dir=3D"auto"><br></div><div di=
r=3D"auto">Kind Regards=C2=A0</div><div dir=3D"auto"><br></div><div dir=3D"=
auto">Gyan</div><div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">On Mon, Jun 15, 2020 at 12:21 PM Darren Dukes (ddukes) &lt;=
ddukes=3D<a href=3D"mailto:40cisco.com@dmarc.ietf.org" target=3D"_blank">40=
cisco.com@dmarc.ietf.org</a>&gt; wrote:<br></div><blockquote class=3D"gmail=
_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left=
-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">



<div>
<div dir=3D"ltr">
<div></div>
<div>
<div>
<div dir=3D"ltr">
Hello Aijun.=C2=A0</div>
<div dir=3D"ltr">
<br>
</div>
<div dir=3D"ltr">
No update to rfc8754 is necessary. Rfc8754 was written so new sids can be d=
efined in other documents independently.=C2=A0</div>
<div dir=3D"ltr">
<br>
</div>
<div dir=3D"ltr">
<span>section 4.3.1 says:</span><br>
</div>
<div dir=3D"ltr">
<pre style=3D"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:mo=
nospace">This document and section define a single SRv6 SID.  Future docume=
nts
   may define additional SRv6 SIDs.  In such a case, the entire content
   of this section will be defined in that document.</pre>
</div>
<br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr">Thanks</div>
<div dir=3D"ltr">=C2=A0 Darren</div>
<div dir=3D"ltr">=C2=A0 (Written on mobile)</div>
<div><br>
</div>
<div></div>
</div>
<div id=3D"m_-8563053080790732859m_-1002759348568167263id-c605c1dd-d42c-45c=
b-94c1-68ec305cf8dc">
<hr style=3D"display:inline-block;width:98%;font-family:-webkit-standard;fo=
nt-size:12pt;color:rgb(0,0,0)">
<div id=3D"m_-8563053080790732859m_-1002759348568167263divRplyFwdMsg" dir=
=3D"ltr"><font face=3D"Calibri, sans-serif" style=3D"font-family:Calibri,sa=
ns-serif;color:rgb(0,0,0)"><b style=3D"font-family:Calibri,sans-serif">From=
:</b> ipv6 &lt;<a href=3D"mailto:ipv6-bounces@ietf.org" style=3D"font-famil=
y:Calibri,sans-serif" target=3D"_blank">ipv6-bounces@ietf.org</a>&gt; on be=
half of Aijun Wang &lt;<a href=3D"mailto:wangaj3@chinatelecom.cn" style=3D"=
font-family:Calibri,sans-serif" target=3D"_blank">wangaj3@chinatelecom.cn</=
a>&gt;<br>
<b style=3D"font-family:Calibri,sans-serif">Sent:</b> Sunday, June 14, 2020=
 10:15 PM<br>
<b style=3D"font-family:Calibri,sans-serif">To:</b> <a href=3D"mailto:ipv6@=
ietf.org" style=3D"font-family:Calibri,sans-serif" target=3D"_blank">ipv6@i=
etf.org</a>; <a href=3D"mailto:spring@ietf.org" style=3D"font-family:Calibr=
i,sans-serif" target=3D"_blank">spring@ietf.org</a><br>
<b style=3D"font-family:Calibri,sans-serif">Subject:</b> About the upper la=
yer header processing in RFC8754(SRH)
<div style=3D"font-family:Calibri,sans-serif">=C2=A0</div>
</font></div>



<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Hi, Folks:</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">RFC8754(SRH) section 4.3.1.2(<a=
 href=3D"https://tools.ietf.org/html/rfc8754#section-4.3.1.2" target=3D"_bl=
ank">https://tools..ietf.org/html/rfc8754#section-4.3.1.2</a>) describes th=
e process of upper layer header as the followings:</span></p></div></div></=
div></div><div><div dir=3D"ltr"><div id=3D"m_-8563053080790732859m_-1002759=
348568167263id-c605c1dd-d42c-45cb-94c1-68ec305cf8dc"><div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">IF (Uppe=
r-layer Header is IPv4 or IPv6) and</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 local configuration permits {</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=
=C2=A0=C2=A0=C2=A0 Perform IPv6 decapsulation</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=
=C2=A0=C2=A0=C2=A0 Resubmit the decapsulated packet to the IPv4 or IPv6 mod=
ule</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=
=C2=A0 }</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=
=C2=A0 ELSE {</span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:10pt;font-family:SimSun;color:black">=C2=A0=
=C2=A0 =E2=80=A6=E2=80=A6</span></p>
<p class=3D"MsoNormal" style=3D"text-indent:42pt"><span lang=3D"EN-US">}</s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">And in network programming draf=
t section 9.1(<a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-s=
pring-srv6-network-programming-15#section-9.1" target=3D"_blank">https://da=
tatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-programming-15#s=
ection-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Although the detail process of =
this new next header are described in the network program draft, =C2=A0does=
 it need to update the section 4.3.1.2 of RFC8754 to reflect the process of=
 new header type(143)?
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Best Regards</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Aijun Wang</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">China Telecom</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
</div>
</div>
</div>
</div>

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Administrative Requests: <a href=3D"https://www.ietf.org/mailman/listinfo/i=
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info/ipv6</a><br>
--------------------------------------------------------------------<br>
</blockquote></div></div>-- <br><div dir=3D"ltr" data-smartmail=3D"gmail_si=
gnature"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr=
"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div><p style=3D"color=
:rgb(34,34,34)"><a href=3D"http://www.verizon.com/" style=3D"padding-bottom=
:1em;display:inline-block;color:rgb(17,85,204)" target=3D"_blank"><img src=
=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz-logo-email" width=3D"81"=
 height=3D"18" style=3D"height: 18px; width: 81px;"></a><br></p><p style=3D=
"font-size:1em;margin:0px;font-family:&quot;Verizon NHG DS&quot;,Arial,sans=
-serif;line-height:13px;color:black"><b style=3D"font-family:&quot;Verizon =
NHG DS&quot;,Arial,sans-serif">Gyan Mishra</b></p><p style=3D"margin:0px;li=
ne-height:13px;color:rgb(34,34,34)"><font face=3D"georgia, serif" style=3D"=
font-size:1em;font-family:georgia,serif;color:black"><i style=3D"font-famil=
y:georgia,serif">Network Solutions A</i></font><font face=3D"georgia, serif=
" style=3D"font-family:georgia,serif;color:rgb(0,0,0)"><i style=3D"font-fam=
ily:georgia,serif">rchitect=C2=A0</i></font></p><p style=3D"font-size:1em;m=
argin:0px;line-height:13px;color:black"><i><font face=3D"georgia, serif" st=
yle=3D"font-family:georgia,serif;color:rgb(0,0,0)">M 301 502-1347<br>13101 =
Columbia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div=
></div></div></div></div></div></div></div></div>
</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"l=
tr"><div><p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com=
/" style=3D"color:rgb(17,85,204);padding-bottom:1em;display:inline-block" t=
arget=3D"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz=
-logo-email" width=3D"81" height=3D"18" style=3D"height:18px;width:81px"></=
a><br></p><p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NH=
G DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b=
></p><p style=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font fac=
e=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutio=
ns A</i></font><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=
=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px;line-height:13px;=
color:black"><i><font face=3D"georgia, serif">M 301 502-1347<br>13101 Colum=
bia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div></di=
v></div></div></div></div></div></div></div>

--0000000000001d3ccd05a8278377--


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From: Ron Bonica <rbonica@juniper.net>
To: Robert Raszuk <robert@raszuk.net>
CC: "Darren Dukes (ddukes)" <ddukes@cisco.com>, Aijun Wang <wangaj3@chinatelecom.cn>, "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: About the upper layer header processing in RFC8754(SRH)
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/1KmT6HhQq0iBUbIs9CzlmtUBmvk>
Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Robert,

I wasn't aware that I was shooting. But, since it is 19:39 in my time zone,=
 I might take a shot of Fernet Branca.

                                                          Ron





Juniper Business Use Only
From: Robert Raszuk <robert@raszuk.net>
Sent: Monday, June 15, 2020 5:31 PM
To: Ron Bonica <rbonica@juniper.net>
Cc: Darren Dukes (ddukes) <ddukes@cisco.com>; Aijun Wang <wangaj3@chinatele=
com.cn>; ipv6@ietf.org; spring@ietf.org
Subject: Re: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hi Ron,

True !

But pls do not take my response as an attempt to derail your shot. It was r=
ather a delicate attempt to put it on the right tracks towards the truth ta=
rget.

Best,
Robert.

On Mon, Jun 15, 2020 at 11:26 PM Ron Bonica <rbonica@juniper.net<mailto:rbo=
nica@juniper.net>> wrote:
Robert,

While this is an interesting question, it is orthogonal to the question tha=
t I posed to Darren.

                                                                   Ron




Juniper Business Use Only
From: Robert Raszuk <robert@raszuk.net<mailto:robert@raszuk.net>>
Sent: Monday, June 15, 2020 3:33 PM
To: Ron Bonica <rbonica@juniper.net<mailto:rbonica@juniper.net>>
Cc: Darren Dukes (ddukes) <ddukes@cisco.com<mailto:ddukes@cisco.com>>; Aiju=
n Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>; ipv6@ietf=
.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf.org>
Subject: Re: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hi Ron,

I think this is not the question of RFC 8754.

To me (and trust me I am not alone) this is much more of the question what =
IPv6 address means. How flexible we can use all bits regardless if we are t=
alking SRv6 or not.

Do we think that https://tools.ietf.org/html/rfc4291<https://urldefense.com=
/v3/__https:/tools.ietf.org/html/rfc4291__;!!NEt6yMaO-gk!VpA2yHsqImwMGaAtR4=
SPjzF6Ek2NKqm6gF4497TQ2fOFK-RBSZLDVLBl5ltmCnmb$> section 2.5 still holds ? =
Do we need to keep stretching notion of interface to logical interfaces map=
ped to functions ?

Then take projects completely unrelated to segment routing ... don't we see=
 evident that we can encode a lot of useful information in the lowest signi=
ficant bits of the IPv6 address without each time proposing new RH ?

Best,
R.



On Mon, Jun 15, 2020 at 9:08 PM Ron Bonica <rbonica=3D40juniper.net@dmarc.i=
etf.org<mailto:40juniper.net@dmarc.ietf.org>> wrote:
Darren,

Does the SID described in RFC 8754 represent any of the SIDs in the Network=
 Programming Draft? In any other document?

                                                                           =
   Ron



Juniper Business Use Only
From: ipv6 <ipv6-bounces@ietf.org<mailto:ipv6-bounces@ietf.org>> On Behalf =
Of Darren Dukes (ddukes)
Sent: Monday, June 15, 2020 12:21 PM
To: Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>; i=
pv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf.org>
Subject: Re: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hello Aijun.

No update to rfc8754 is necessary. Rfc8754 was written so new sids can be d=
efined in other documents independently.

section 4.3.1 says:

This document and section define a single SRv6 SID.  Future documents

   may define additional SRv6 SIDs.  In such a case, the entire content

   of this section will be defined in that document.


Thanks
  Darren
  (Written on mobile)

________________________________
From: ipv6 <ipv6-bounces@ietf.org<mailto:ipv6-bounces@ietf.org>> on behalf =
of Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>
Sent: Sunday, June 14, 2020 10:15 PM
To: ipv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf=
.org>
Subject: About the upper layer header processing in RFC8754(SRH)

Hi, Folks:
RFC8754(SRH) section 4.3.1.2(https://tools..ietf.org/html/rfc8754#section-4=
.3.1.2<https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*secti=
on-4.3.1.2__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5=
j3jjAVQJYjvxKIgrBz$>) describes the process of upper layer header as the fo=
llowings:
IF (Upper-layer Header is IPv4 or IPv6) and
       local configuration permits {
     Perform IPv6 decapsulation
     Resubmit the decapsulated packet to the IPv4 or IPv6 module
   }
   ELSE {
   ......
}
And in network programming draft section 9.1(https://datatracker.ietf.org/d=
oc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1<https://u=
rldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-ietf-spring-s=
rv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08=
UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$>), one new Ethernet Next He=
ader Type(143) is proposed.

Although the detail process of this new next header are described in the ne=
twork program draft,  does it need to update the section 4.3.1.2 of RFC8754=
 to reflect the process of new header type(143)?

Best Regards

Aijun Wang
China Telecom

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</head>
<body lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">Robert,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I wasn&#8217;t aware that I was shooting. But, since=
 it is 19:39 in my time zone, I might take a shot of Fernet Branca.<o:p></o=
:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> Robert Raszuk &lt;robert@raszuk.net&gt;=
 <br>
<b>Sent:</b> Monday, June 15, 2020 5:31 PM<br>
<b>To:</b> Ron Bonica &lt;rbonica@juniper.net&gt;<br>
<b>Cc:</b> Darren Dukes (ddukes) &lt;ddukes@cisco.com&gt;; Aijun Wang &lt;w=
angaj3@chinatelecom.cn&gt;; ipv6@ietf.org; spring@ietf.org<br>
<b>Subject:</b> Re: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b><=
span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;colo=
r:black">[External Email. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<p class=3D"MsoNormal">Hi Ron, <o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">True !&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">But pls do not take my response as an attempt to der=
ail your shot. It was rather a delicate attempt to put it on the right trac=
ks towards the truth target.&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Best,<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Robert.<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<p class=3D"MsoNormal">On Mon, Jun 15, 2020 at 11:26 PM Ron Bonica &lt;<a h=
ref=3D"mailto:rbonica@juniper.net">rbonica@juniper.net</a>&gt; wrote:<o:p><=
/o:p></p>
</div>
<blockquote style=3D"border:none;border-left:solid #CCCCCC 1.0pt;padding:0i=
n 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-=
bottom:5.0pt">
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Robert,<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">While this is an interesting question, it is orthogonal to the que=
stion that I posed to Darren.<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ron<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"gmail-m8273008625074508598msipfooter30b3d538" align=3D"center" =
style=3D"margin:0in;margin-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><b>From:</b> Robert Raszuk &lt;<a href=3D"mailto:robert@raszuk.net=
" target=3D"_blank">robert@raszuk.net</a>&gt;
<br>
<b>Sent:</b> Monday, June 15, 2020 3:33 PM<br>
<b>To:</b> Ron Bonica &lt;<a href=3D"mailto:rbonica@juniper.net" target=3D"=
_blank">rbonica@juniper.net</a>&gt;<br>
<b>Cc:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com" ta=
rget=3D"_blank">ddukes@cisco.com</a>&gt;; Aijun Wang &lt;<a href=3D"mailto:=
wangaj3@chinatelecom.cn" target=3D"_blank">wangaj3@chinatelecom.cn</a>&gt;;
<a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org</a>; <a hr=
ef=3D"mailto:spring@ietf.org" target=3D"_blank">
spring@ietf.org</a><br>
<b>Subject:</b> Re: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;line-height:12.0pt;background:#FFEB9C">
<b><span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;=
color:black">[External Email. Be cautious of content]</span></b><o:p></o:p>=
</p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Hi Ron,
<o:p></o:p></p>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">I think this is not the question of RFC 8754.&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">To me (and trust me I am not alone) this is much more of the quest=
ion what IPv6 address means. How flexible we can use all bits regardless if=
 we are talking SRv6 or not.&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Do we think that&nbsp;<a href=3D"https://urldefense.com/v3/__https=
:/tools.ietf.org/html/rfc4291__;!!NEt6yMaO-gk!VpA2yHsqImwMGaAtR4SPjzF6Ek2NK=
qm6gF4497TQ2fOFK-RBSZLDVLBl5ltmCnmb$" target=3D"_blank">https://tools.ietf.=
org/html/rfc4291</a>&nbsp;section
 2.5 still holds ? Do we need to keep stretching notion of interface to log=
ical interfaces mapped to functions ?&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Then take projects completely unrelated to segment&nbsp;routing ..=
. don't we see evident that we can encode a lot of useful information in th=
e lowest significant bits of the IPv6 address
 without each time proposing new RH ?&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Best,<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">R.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">On Mon, Jun 15, 2020 at 9:08 PM Ron Bonica &lt;rbonica=3D<a href=
=3D"mailto:40juniper.net@dmarc.ietf.org" target=3D"_blank">40juniper.net@dm=
arc.ietf.org</a>&gt; wrote:<o:p></o:p></p>
</div>
<blockquote style=3D"border:none;border-left:solid #CCCCCC 1.0pt;padding:0i=
n 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-=
bottom:5.0pt">
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Darren,<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Does the SID described in RFC 8754 represent any of the SIDs in th=
e Network Programming Draft? In any other document?<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; Ron<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p align=3D"center" style=3D"margin:0in;margin-bottom:.0001pt;text-align:ce=
nter"><span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only=
</span><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><b>From:</b> ipv6 &lt;<a href=3D"mailto:ipv6-bounces@ietf.org" tar=
get=3D"_blank">ipv6-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Monday, June 15, 2020 12:21 PM<br>
<b>To:</b> Aijun Wang &lt;<a href=3D"mailto:wangaj3@chinatelecom.cn" target=
=3D"_blank">wangaj3@chinatelecom.cn</a>&gt;;
<a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org</a>; <a hr=
ef=3D"mailto:spring@ietf.org" target=3D"_blank">
spring@ietf.org</a><br>
<b>Subject:</b> Re: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;line-height:12.0pt;background:#FFEB9C">
<b><span style=3D"font-family:&quot;Lato&quot;,sans-serif;color:black">[Ext=
ernal Email. Be cautious of content]</span></b><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<div>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;HelveticaNeue&quot;,serif">Hello =
Aijun.&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;HelveticaNeue&quot;,serif">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;HelveticaNeue&quot;,serif">No upd=
ate to rfc8754 is necessary. Rfc8754 was written so new sids can be defined=
 in other documents independently.&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;HelveticaNeue&quot;,serif">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;HelveticaNeue&quot;,serif">sectio=
n 4.3.1 says:</span><o:p></o:p></p>
</div>
<div>
<pre><span style=3D"font-size:11.0pt">This document and section define a si=
ngle SRv6 SID.&nbsp; Future documents</span><o:p></o:p></pre>
<pre><span style=3D"font-size:11.0pt">&nbsp;&nbsp; may define additional SR=
v6 SIDs.&nbsp; In such a case, the entire content</span><o:p></o:p></pre>
<pre><span style=3D"font-size:11.0pt">&nbsp;&nbsp; of this section will be =
defined in that document.</span><o:p></o:p></pre>
</div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Thanks<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp; Darren<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp; (Written on mobile)<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
</div>
<div id=3D"gmail-m_8273008625074508598gmail-m_569078935103441464id-c605c1dd=
-d42c-45cb-94c1-68ec305cf8dc">
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" noshade=3D"" style=3D"color:black" align=3D"ce=
nter">
</div>
<div id=3D"gmail-m_8273008625074508598gmail-m_569078935103441464divRplyFwdM=
sg">
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><b>From:</b> ipv6 &lt;<a href=3D"mailto:ipv6-bounces@ietf.org" tar=
get=3D"_blank">ipv6-bounces@ietf.org</a>&gt; on behalf of Aijun Wang &lt;<a=
 href=3D"mailto:wangaj3@chinatelecom.cn" target=3D"_blank">wangaj3@chinatel=
ecom.cn</a>&gt;<br>
<b>Sent:</b> Sunday, June 14, 2020 10:15 PM<br>
<b>To:</b> <a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org=
</a>; <a href=3D"mailto:spring@ietf.org" target=3D"_blank">
spring@ietf.org</a><br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH) <o:=
p></o:p></p>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Hi, Folks:<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">RFC8754(SRH) section 4.3.1.2(<a href=3D"https://urldefense.com/v3/=
__https:/tools.ietf.org/html/rfc8754*section-4.3.1.2__;Iw!!NEt6yMaO-gk!W4_Z=
bJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjvxKIgrBz$" target=3D"_b=
lank">https://tools..ietf.org/html/rfc8754#section-4.3.1.2</a>)
 describes the process of upper layer header as the followings:<o:p></o:p><=
/p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">IF=
 (Upper-layer Header is IPv4 or IPv6) and</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local configuration permits {</span><o:p=
></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&n=
bsp;&nbsp;&nbsp;&nbsp; Perform IPv6 decapsulation</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&n=
bsp;&nbsp;&nbsp;&nbsp; Resubmit the decapsulated packet to the IPv4 or IPv6=
 module</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&n=
bsp;&nbsp; }</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&n=
bsp;&nbsp; ELSE {</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:SimSun;color:black">&n=
bsp;&nbsp; &#8230;&#8230;</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;text-indent:42.0pt">
}<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">And in network programming draft section 9.1(<a href=3D"https://ur=
ldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-ietf-spring-sr=
v6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08U=
Yd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$" target=3D"_blank">https://d=
atatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-programming-15#=
section-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Although the detail process of this new next header are described =
in the network program draft, &nbsp;does it need to update the section 4.3.=
1.2 of RFC8754 to reflect the process of
 new header type(143)? <o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Best Regards<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Aijun Wang<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">China Telecom<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">------------------------------------------------------------------=
--<br>
IETF IPv6 working group mailing list<br>
<a href=3D"mailto:ipv6@ietf.org" target=3D"_blank">ipv6@ietf.org</a><br>
Administrative Requests: <a href=3D"https://urldefense.com/v3/__https:/www.=
ietf.org/mailman/listinfo/ipv6__;!!NEt6yMaO-gk!VpA2yHsqImwMGaAtR4SPjzF6Ek2N=
Kqm6gF4497TQ2fOFK-RBSZLDVLBl5gomzxK4$" target=3D"_blank">
https://www.ietf.org/mailman/listinfo/ipv6</a><br>
--------------------------------------------------------------------<o:p></=
o:p></p>
</blockquote>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</body>
</html>

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From: Ron Bonica <rbonica@juniper.net>
To: Robert Raszuk <robert@raszuk.net>, Mark Smith <markzzzsmith@gmail.com>
CC: Aijun Wang <wangaj3@chinatelecom.cn>, "spring@ietf.org" <spring@ietf.org>,  "ipv6@ietf.org" <ipv6@ietf.org>
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From: Lizhenbin <lizhenbin@huawei.com>
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From: "Darren Dukes (ddukes)" <ddukes@cisco.com>
To: Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>, Aijun Wang <wangaj3@chinatelecom.cn>, "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: About the upper layer header processing in RFC8754(SRH)
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/XMFwsfLWwpAMcNKdaa8RtnjVfLg>
Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Hi Ron.

The SID described in RFC8754 is fully described there.

The SIDs in draft-ietf-spring-SRv6-network-programming are fully defined in=
 that document.

Darren

________________________________
From: Ron Bonica <rbonica=3D40juniper.net@dmarc.ietf.org>
Sent: Monday, June 15, 2020 3:08:12 PM
To: Darren Dukes (ddukes) <ddukes@cisco.com>; Aijun Wang <wangaj3@chinatele=
com.cn>; ipv6@ietf.org <ipv6@ietf.org>; spring@ietf.org <spring@ietf.org>
Subject: RE: About the upper layer header processing in RFC8754(SRH)


Darren,



Does the SID described in RFC 8754 represent any of the SIDs in the Network=
 Programming Draft? In any other document?



                                                                           =
   Ron





Juniper Business Use Only

From: ipv6 <ipv6-bounces@ietf.org> On Behalf Of Darren Dukes (ddukes)
Sent: Monday, June 15, 2020 12:21 PM
To: Aijun Wang <wangaj3@chinatelecom.cn>; ipv6@ietf.org; spring@ietf.org
Subject: Re: About the upper layer header processing in RFC8754(SRH)



[External Email. Be cautious of content]



Hello Aijun.



No update to rfc8754 is necessary. Rfc8754 was written so new sids can be d=
efined in other documents independently.



section 4.3.1 says:

This document and section define a single SRv6 SID.  Future documents

   may define additional SRv6 SIDs.  In such a case, the entire content

   of this section will be defined in that document.





Thanks

  Darren

  (Written on mobile)



________________________________

From: ipv6 <ipv6-bounces@ietf.org<mailto:ipv6-bounces@ietf.org>> on behalf =
of Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>
Sent: Sunday, June 14, 2020 10:15 PM
To: ipv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf=
.org>
Subject: About the upper layer header processing in RFC8754(SRH)



Hi, Folks:

RFC8754(SRH) section 4.3.1.2(https://tools..ietf.org/html/rfc8754#section-4=
.3.1.2<https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*secti=
on-4.3.1.2__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5=
j3jjAVQJYjvxKIgrBz$>) describes the process of upper layer header as the fo=
llowings:

IF (Upper-layer Header is IPv4 or IPv6) and

       local configuration permits {

     Perform IPv6 decapsulation

     Resubmit the decapsulated packet to the IPv4 or IPv6 module

   }

   ELSE {

   =85=85

}

And in network programming draft section 9.1(https://datatracker.ietf.org/d=
oc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1<https://u=
rldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-ietf-spring-s=
rv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08=
UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$>), one new Ethernet Next He=
ader Type(143) is proposed.



Although the detail process of this new next header are described in the ne=
twork program draft,  does it need to update the section 4.3.1.2 of RFC8754=
 to reflect the process of new header type(143)?



Best Regards



Aijun Wang

China Telecom



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252">
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<div dir=3D"ltr">
<div></div>
<div>
<div><span>Hi Ron.<br>
</span>
<div dir=3D"ltr"><br>
</div>
<div>The SID described in RFC8754 is fully described there. &nbsp;<br>
</div>
<div dir=3D"ltr"><br>
</div>
<div>The SIDs in draft-ietf-spring-SRv6-network-programming are fully defin=
ed in that document.
<br>
</div>
<div dir=3D"ltr"><br>
</div>
<span>Darren</span><br>
</div>
<div><br>
</div>
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<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st=
yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Ron Bonica &lt;rbonic=
a=3D40juniper.net@dmarc.ietf.org&gt;<br>
<b>Sent:</b> Monday, June 15, 2020 3:08:12 PM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;ddukes@cisco.com&gt;; Aijun Wang &lt;w=
angaj3@chinatelecom.cn&gt;; ipv6@ietf.org &lt;ipv6@ietf.org&gt;; spring@iet=
f.org &lt;spring@ietf.org&gt;<br>
<b>Subject:</b> RE: About the upper layer header processing in RFC8754(SRH)=
</font>
<div>&nbsp;</div>
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<p class=3D"x_MsoNormal"><span style=3D"font-size:11.0pt; font-family:&quot=
;Calibri&quot;,sans-serif">Darren,</span></p>
<p class=3D"x_MsoNormal"><span style=3D"font-size:11.0pt; font-family:&quot=
;Calibri&quot;,sans-serif">&nbsp;</span></p>
<p class=3D"x_MsoNormal"><span style=3D"font-size:11.0pt; font-family:&quot=
;Calibri&quot;,sans-serif">Does the SID described in RFC 8754 represent any=
 of the SIDs in the Network Programming Draft? In any other document?</span=
></p>
<p class=3D"x_MsoNormal"><span style=3D"font-size:11.0pt; font-family:&quot=
;Calibri&quot;,sans-serif">&nbsp;</span></p>
<p class=3D"x_MsoNormal"><span style=3D"font-size:11.0pt; font-family:&quot=
;Calibri&quot;,sans-serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron</span></p>
<p class=3D"x_MsoNormal"><span style=3D"font-size:11.0pt; font-family:&quot=
;Calibri&quot;,sans-serif">&nbsp;</span></p>
<p class=3D"x_MsoNormal" align=3D"left" style=3D"text-align:left"><span sty=
le=3D"font-size:11.0pt; font-family:&quot;Calibri&quot;,sans-serif">&nbsp;<=
/span></p>
<p class=3D"x_msipfooter30b3d538" align=3D"center" style=3D"margin:0in; mar=
gin-bottom:.0001pt; text-align:center">
<span style=3D"font-size:7.0pt; color:black">Juniper Business Use Only</spa=
n></p>
<div>
<div style=3D"border:none; border-top:solid #E1E1E1 1.0pt; padding:3.0pt 0i=
n 0in 0in">
<p class=3D"x_MsoNormal" align=3D"left" style=3D"text-align:left"><b><span =
style=3D"font-size:11.0pt; font-family:&quot;Calibri&quot;,sans-serif">From=
:</span></b><span style=3D"font-size:11.0pt; font-family:&quot;Calibri&quot=
;,sans-serif"> ipv6 &lt;ipv6-bounces@ietf.org&gt;
<b>On Behalf Of </b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Monday, June 15, 2020 12:21 PM<br>
<b>To:</b> Aijun Wang &lt;wangaj3@chinatelecom.cn&gt;; ipv6@ietf.org; sprin=
g@ietf.org<br>
<b>Subject:</b> Re: About the upper layer header processing in RFC8754(SRH)=
</span></p>
</div>
</div>
<p class=3D"x_MsoNormal" align=3D"left" style=3D"text-align:left">&nbsp;</p=
>
<p class=3D"x_MsoNormal" style=3D"line-height:12.0pt; background:#FFEB9C"><=
b><span style=3D"font-family:&quot;Lato&quot;,sans-serif; color:black">[Ext=
ernal Email. Be cautious of content]</span></b></p>
<p class=3D"x_MsoNormal"><span style=3D"font-size:11.0pt; font-family:&quot=
;Calibri&quot;,sans-serif">&nbsp;</span></p>
<div>
<div>
<div>
<div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quo=
t;,serif">Hello Aijun.&nbsp;</span></p>
</div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quo=
t;,serif">&nbsp;</span></p>
</div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quo=
t;,serif">No update to rfc8754 is necessary. Rfc8754 was written so new sid=
s can be defined in other documents independently.&nbsp;</span></p>
</div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quo=
t;,serif">&nbsp;</span></p>
</div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quo=
t;,serif">section 4.3.1 says:</span></p>
</div>
<div>
<pre><span style=3D"font-size:11.0pt">This document and section define a si=
ngle SRv6 SID.&nbsp; Future documents</span></pre>
<pre><span style=3D"font-size:11.0pt">&nbsp;&nbsp; may define additional SR=
v6 SIDs.&nbsp; In such a case, the entire content</span></pre>
<pre><span style=3D"font-size:11.0pt">&nbsp;&nbsp; of this section will be =
defined in that document.</span><span style=3D"font-size:11.0pt; font-famil=
y:&quot;Courier New&quot;"></span></pre>
</div>
<p class=3D"x_MsoNormal"><span style=3D"font-size:11.0pt">&nbsp;</span></p>
</div>
<div>
<p class=3D"x_MsoNormal">&nbsp;</p>
</div>
<div>
<p class=3D"x_MsoNormal">Thanks</p>
</div>
<div>
<p class=3D"x_MsoNormal">&nbsp; Darren</p>
</div>
<div>
<p class=3D"x_MsoNormal">&nbsp; (Written on mobile)</p>
</div>
<div>
<p class=3D"x_MsoNormal">&nbsp;</p>
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<div id=3D"x_divRplyFwdMsg">
<p class=3D"x_MsoNormal"><b>From:</b> ipv6 &lt;<a href=3D"mailto:ipv6-bounc=
es@ietf.org">ipv6-bounces@ietf.org</a>&gt; on behalf of Aijun Wang &lt;<a h=
ref=3D"mailto:wangaj3@chinatelecom.cn">wangaj3@chinatelecom.cn</a>&gt;<br>
<b>Sent:</b> Sunday, June 14, 2020 10:15 PM<br>
<b>To:</b> <a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"m=
ailto:spring@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH) </p=
>
<div>
<p class=3D"x_MsoNormal">&nbsp;</p>
</div>
</div>
<div>
<p class=3D"x_MsoNormal">Hi, Folks:</p>
<p class=3D"x_MsoNormal">RFC8754(SRH) section 4.3.1.2(<a href=3D"https://ur=
ldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*section-4.3.1.2__;Iw!!=
NEt6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjvxKIgrB=
z$">https://tools..ietf.org/html/rfc8754#section-4.3.1.2</a>)
 describes the process of upper layer header as the followings:</p>
<p class=3D"x_MsoNormal" align=3D"left" style=3D"text-align:left"><span sty=
le=3D"font-size:10.0pt; font-family:SimSun; color:black">IF (Upper-layer He=
ader is IPv4 or IPv6) and</span></p>
<p class=3D"x_MsoNormal" align=3D"left" style=3D"text-align:left"><span sty=
le=3D"font-size:10.0pt; font-family:SimSun; color:black">&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp; local configuration permits {</span></p>
<p class=3D"x_MsoNormal" align=3D"left" style=3D"text-align:left"><span sty=
le=3D"font-size:10.0pt; font-family:SimSun; color:black">&nbsp;&nbsp;&nbsp;=
&nbsp; Perform IPv6 decapsulation</span></p>
<p class=3D"x_MsoNormal" align=3D"left" style=3D"text-align:left"><span sty=
le=3D"font-size:10.0pt; font-family:SimSun; color:black">&nbsp;&nbsp;&nbsp;=
&nbsp; Resubmit the decapsulated packet to the IPv4 or IPv6 module</span></=
p>
<p class=3D"x_MsoNormal" align=3D"left" style=3D"text-align:left"><span sty=
le=3D"font-size:10.0pt; font-family:SimSun; color:black">&nbsp;&nbsp; }</sp=
an></p>
<p class=3D"x_MsoNormal" align=3D"left" style=3D"text-align:left"><span sty=
le=3D"font-size:10.0pt; font-family:SimSun; color:black">&nbsp;&nbsp; ELSE =
{</span></p>
<p class=3D"x_MsoNormal" align=3D"left" style=3D"text-align:left"><span sty=
le=3D"font-size:10.0pt; font-family:SimSun; color:black">&nbsp;&nbsp; =85=
=85</span></p>
<p class=3D"x_MsoNormal" style=3D"text-indent:42.0pt">}</p>
<p class=3D"x_MsoNormal">And in network programming draft section 9.1(<a hr=
ef=3D"https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draf=
t-ietf-spring-srv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_=
ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$">https://dat=
atracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-programming-15#se=
ction-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal">Although the detail process of this new next heade=
r are described in the network program draft, &nbsp;does it need to update =
the section 4.3.1.2 of RFC8754 to reflect the process of new header type(14=
3)?
</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal">Best Regards</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal">Aijun Wang</p>
<p class=3D"x_MsoNormal">China Telecom</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>

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From: "Zafar Ali (zali)" <zali@cisco.com>
To: Martin Vigoureux <martin.vigoureux@nokia.com>, "spring@ietf.org" <spring@ietf.org>
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From nobody Mon Jun 15 23:02:52 2020
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To: Martin Vigoureux <martin.vigoureux@nokia.com>, "spring@ietf.org" <spring@ietf.org>
Cc: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, Rob Shakir <robjs@google.com>, James Guichard <james.n.guichard@futurewei.com>, "Joel M. Halpern" <jmh@joelhalpern.com>
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From: Loa Andersson <loa@pi.nu>
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Subject: Re: [spring] Leadership change
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Rob,

Thanks all the work done.

Jim and Joel,

Thanks for taking this on! Welcome"

Bruno, Jim and Joel,

Let us continue the the good cooperation between mpls and spring wg's.


/Loa


On 15/06/2020 04:25, Martin Vigoureux wrote:
> WG,
> 
> Rob had decided to step down as chair some time ago. There hasn't been 
> any formal communication on that so I'd like, first, to thank Rob for 
> his work and dedication to the group. Thank you very much Rob.
> 
> Since that time, I have been actively looking for one (or two) person(s) 
> to replace him. This has proven to be a very challenging endeavour!
> 
> But it has finally came to an end.
> 
> I am pleased to inform you that I have appointed Jim Guichard and Joel 
> Halpern as co-chairs of SPRING WG, alongside Bruno.
> Thank you Jim, Thank you Joel, and thank you Bruno.
> 
> 
> Martin
> as AD for SPRING
> 
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring

-- 

Loa Andersson                        email: loa@pi.nu
Senior MPLS Expert                          loa.pi.nu@gmail
Bronze Dragon Consulting             phone: +46 739 81 21 64


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Hi, Darren:

=20

RFC8754 should defines the general processing rule for the SRH, not =
defining
any kind of SID.=20

Different kinds of SID behavior should be defined in other documents, =
for
example, the network programming draft etc.

=20

I think https://tools.ietf.org/html/rfc8754#section-4.3.1.1( for SRH) =
covers
all the processing rules that defined in
https://tools.ietf.org/html/draft-ietf-spring-srv6-network-programming-14=
.=20

The description in  https://tools.ietf.org/html/rfc8754#section-4.3.1.2
(for Upper Layer)should also cover all the situations that defined in
https://tools.ietf.org/html/draft-ietf-spring-srv6-network-programming-14=
,
and the situations defined in any other related drafts.

=20

And, if your statement is true, what kind of SID behavior is defined in =
this
section then? What is its relationship with the different SID behaviors
described in the network program draft?

=20

=20

Best Regards

=20

Aijun Wang

China Telecom

=20

=B7=A2=BC=FE=C8=CB: ipv6-bounces@ietf.org [mailto:ipv6-bounces@ietf.org] =
=B4=FA=B1=ED Darren
Dukes (ddukes)
=B7=A2=CB=CD=CA=B1=BC=E4: 2020=C4=EA6=D4=C216=C8=D5 10:17
=CA=D5=BC=FE=C8=CB: Ron Bonica <rbonica=3D40juniper.net@dmarc.ietf.org>; =
Aijun Wang
<wangaj3@chinatelecom.cn>; ipv6@ietf.org; spring@ietf.org
=D6=F7=CC=E2: Re: About the upper layer header processing in =
RFC8754(SRH)

=20

Hi Ron.

=20

The SID described in RFC8754 is fully described there. =20

=20

The SIDs in draft-ietf-spring-SRv6-network-programming are fully defined =
in
that document.=20

=20

Darren

=20

  _____ =20

From: Ron Bonica <rbonica=3D40juniper.net@dmarc.ietf.org
<mailto:rbonica=3D40juniper.net@dmarc.ietf.org> >
Sent: Monday, June 15, 2020 3:08:12 PM
To: Darren Dukes (ddukes) <ddukes@cisco.com <mailto:ddukes@cisco.com> >;
Aijun Wang <wangaj3@chinatelecom.cn <mailto:wangaj3@chinatelecom.cn> >;
ipv6@ietf.org <mailto:ipv6@ietf.org>  <ipv6@ietf.org =
<mailto:ipv6@ietf.org>
>; spring@ietf.org <mailto:spring@ietf.org>  <spring@ietf.org
<mailto:spring@ietf.org> >
Subject: RE: About the upper layer header processing in RFC8754(SRH)=20

=20

Darren,

=20

Does the SID described in RFC 8754 represent any of the SIDs in the =
Network
Programming Draft? In any other document?

=20

=20
Ron

=20

=20

Juniper Business Use Only

From: ipv6 <ipv6-bounces@ietf.org <mailto:ipv6-bounces@ietf.org> > On =
Behalf
Of Darren Dukes (ddukes)
Sent: Monday, June 15, 2020 12:21 PM
To: Aijun Wang <wangaj3@chinatelecom.cn <mailto:wangaj3@chinatelecom.cn> =
>;
ipv6@ietf.org <mailto:ipv6@ietf.org> ; spring@ietf.org
<mailto:spring@ietf.org>=20
Subject: Re: About the upper layer header processing in RFC8754(SRH)

=20

[External Email. Be cautious of content]

=20

Hello Aijun.=20

=20

No update to rfc8754 is necessary. Rfc8754 was written so new sids can =
be
defined in other documents independently.=20

=20

section 4.3.1 says:

This document and section define a single SRv6 SID.  Future documents
   may define additional SRv6 SIDs.  In such a case, the entire content
   of this section will be defined in that document.

=20

=20

Thanks

  Darren

  (Written on mobile)

=20

  _____ =20

From: ipv6 <ipv6-bounces@ietf.org <mailto:ipv6-bounces@ietf.org> > on =
behalf
of Aijun Wang <wangaj3@chinatelecom.cn <mailto:wangaj3@chinatelecom.cn> =
>
Sent: Sunday, June 14, 2020 10:15 PM
To: ipv6@ietf.org <mailto:ipv6@ietf.org> ; spring@ietf.org
<mailto:spring@ietf.org>=20
Subject: About the upper layer header processing in RFC8754(SRH)=20

=20

Hi, Folks:

RFC8754(SRH) section =
4.3.1.2(https://tools..ietf.org/html/rfc8754#section-4.
3.1.2
<https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*section-4=
.3.
1.2__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjA=
VQJ
YjvxKIgrBz$> ) describes the process of upper layer header as the
followings:

IF (Upper-layer Header is IPv4 or IPv6) and

       local configuration permits {

     Perform IPv6 decapsulation

     Resubmit the decapsulated packet to the IPv4 or IPv6 module

   }

   ELSE {

   =A1=AD=A1=AD

}

And in network programming draft section
9.1(https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-=
pro
gramming-15#section-9.1
<https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-i=
etf
-spring-srv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_ZbJ6=
Iap
hycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$> ), one new =
Ethernet
Next Header Type(143) is proposed.

=20

Although the detail process of this new next header are described in the
network program draft,  does it need to update the section 4.3.1.2 of
RFC8754 to reflect the process of new header type(143)?=20

=20

Best Regards

=20

Aijun Wang

China Telecom

=20


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</o:shapelayout></xml><![endif]--></head><body lang=3DZH-CN =
link=3D"#0563C1" vlink=3Dpurple><div class=3DWordSection1><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'>Hi, =
Darren:<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'><o:p>&n=
bsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'>RFC8754=
 should defines the general processing rule for the SRH, not defining =
any kind of SID. <o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'>Differe=
nt kinds of SID behavior should be defined in other documents, for =
example, the network programming draft etc.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'><o:p>&n=
bsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'>I =
think </span><span lang=3DEN-US><a =
href=3D"https://tools.ietf.org/html/rfc8754#section-4.3.1.1">https://tool=
s.ietf.org/html/rfc8754#section-4.3.1.1</a></span><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'>( for =
SRH) covers all the processing rules that defined in </span><span =
lang=3DEN-US><a =
href=3D"https://tools.ietf.org/html/draft-ietf-spring-srv6-network-progra=
mming-14">https://tools.ietf.org/html/draft-ietf-spring-srv6-network-prog=
ramming-14</a>. <o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'>The =
description in &nbsp;</span><span lang=3DEN-US><a =
href=3D"https://tools.ietf.org/html/rfc8754#section-4.3.1.2">https://tool=
s.ietf.org/html/rfc8754#section-4.3.1.2</a> &nbsp;(</span><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'>for =
Upper Layer)should also cover all the situations that defined in =
</span><span lang=3DEN-US><a =
href=3D"https://tools.ietf.org/html/draft-ietf-spring-srv6-network-progra=
mming-14">https://tools.ietf.org/html/draft-ietf-spring-srv6-network-prog=
ramming-14</a>, </span><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'>and =
the situations defined in any other related =
drafts.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'><o:p>&n=
bsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'>And, =
if your statement is true, what kind of SID behavior is defined in this =
section then? What is its relationship with the different SID behaviors =
described in the network program draft?<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'><o:p>&n=
bsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'><o:p>&n=
bsp;</o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'>Best =
Regards<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'><o:p>&n=
bsp;</o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'>Aijun =
Wang<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'>China =
Telecom</span><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'><o:p></=
o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF;color:#1F497D'><o:p>&n=
bsp;</o:p></span></p><div style=3D'border:none;border-left:solid blue =
1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span =
style=3D'font-size:11.0pt;font-family:=B5=C8=CF=DF'>=B7=A2=BC=FE=C8=CB<sp=
an lang=3DEN-US>:</span></span></b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:=B5=C8=CF=DF'> =
ipv6-bounces@ietf.org [mailto:ipv6-bounces@ietf.org] </span><b><span =
style=3D'font-size:11.0pt;font-family:=B5=C8=CF=DF'>=B4=FA=B1=ED =
</span></b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:=B5=C8=CF=DF'>Darren Dukes =
(ddukes)<br></span><b><span =
style=3D'font-size:11.0pt;font-family:=B5=C8=CF=DF'>=B7=A2=CB=CD=CA=B1=BC=
=E4<span lang=3DEN-US>:</span></span></b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:=B5=C8=CF=DF'> 2020</span><span =
style=3D'font-size:11.0pt;font-family:=B5=C8=CF=DF'>=C4=EA<span =
lang=3DEN-US>6</span>=D4=C2<span lang=3DEN-US>16</span>=C8=D5<span =
lang=3DEN-US> 10:17<br></span><b>=CA=D5=BC=FE=C8=CB<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> Ron Bonica =
&lt;rbonica=3D40juniper.net@dmarc.ietf.org&gt;; Aijun Wang =
&lt;wangaj3@chinatelecom.cn&gt;; ipv6@ietf.org; =
spring@ietf.org<br></span><b>=D6=F7=CC=E2<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> Re: About the upper layer =
header processing in =
RFC8754(SRH)<o:p></o:p></span></span></p></div></div><p =
class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><div><div><div><p =
class=3DMsoNormal><span lang=3DEN-US>Hi =
Ron.<o:p></o:p></span></p><div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US>The SID described in RFC8754 is =
fully described there. &nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US>The SIDs in =
draft-ietf-spring-SRv6-network-programming are fully defined in that =
document. <o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p></div><p =
class=3DMsoNormal><span =
lang=3DEN-US>Darren<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p></div></div></div><div =
class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><span =
lang=3DEN-US><hr size=3D3 width=3D"98%" align=3Dcenter></span></div><div =
id=3DdivRplyFwdMsg><p class=3DMsoNormal><b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black'>F=
rom:</span></b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black'> =
Ron Bonica &lt;<a =
href=3D"mailto:rbonica=3D40juniper.net@dmarc.ietf.org">rbonica=3D40junipe=
r.net@dmarc.ietf.org</a>&gt;<br><b>Sent:</b> Monday, June 15, 2020 =
3:08:12 PM<br><b>To:</b> Darren Dukes (ddukes) &lt;<a =
href=3D"mailto:ddukes@cisco.com">ddukes@cisco.com</a>&gt;; Aijun Wang =
&lt;<a =
href=3D"mailto:wangaj3@chinatelecom.cn">wangaj3@chinatelecom.cn</a>&gt;; =
<a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a> &lt;<a =
href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>&gt;; <a =
href=3D"mailto:spring@ietf.org">spring@ietf.org</a> &lt;<a =
href=3D"mailto:spring@ietf.org">spring@ietf.org</a>&gt;<br><b>Subject:</b=
> RE: About the upper layer header processing in =
RFC8754(SRH)</span><span lang=3DEN-US> <o:p></o:p></span></p><div><p =
class=3DMsoNormal><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p></div></div><div><div><p =
class=3Dxmsonormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Darren,</span=
><span lang=3DEN-US><o:p></o:p></span></p><p class=3Dxmsonormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>&nbsp;</span>=
<span lang=3DEN-US><o:p></o:p></span></p><p class=3Dxmsonormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Does the SID =
described in RFC 8754 represent any of the SIDs in the Network =
Programming Draft? In any other document?</span><span =
lang=3DEN-US><o:p></o:p></span></p><p class=3Dxmsonormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>&nbsp;</span>=
<span lang=3DEN-US><o:p></o:p></span></p><p class=3Dxmsonormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; Ron</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3Dxmsonormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>&nbsp;</span>=
<span lang=3DEN-US><o:p></o:p></span></p><p class=3Dxmsonormal =
align=3Dleft style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>&nbsp;</span>=
<span lang=3DEN-US><o:p></o:p></span></p><p class=3Dxmsipfooter30b3d538 =
align=3Dcenter =
style=3D'margin:0cm;margin-bottom:.0001pt;text-align:center'><span =
lang=3DEN-US style=3D'font-size:7.0pt;color:black'>Juniper Business Use =
Only</span><span lang=3DEN-US><o:p></o:p></span></p><div><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3Dxmsonormal align=3Dleft =
style=3D'text-align:left'><b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> ipv6 &lt;<a =
href=3D"mailto:ipv6-bounces@ietf.org">ipv6-bounces@ietf.org</a>&gt; =
<b>On Behalf Of </b>Darren Dukes (ddukes)<br><b>Sent:</b> Monday, June =
15, 2020 12:21 PM<br><b>To:</b> Aijun Wang &lt;<a =
href=3D"mailto:wangaj3@chinatelecom.cn">wangaj3@chinatelecom.cn</a>&gt;; =
<a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a =
href=3D"mailto:spring@ietf.org">spring@ietf.org</a><br><b>Subject:</b> =
Re: About the upper layer header processing in RFC8754(SRH)</span><span =
lang=3DEN-US><o:p></o:p></span></p></div></div><p class=3Dxmsonormal =
align=3Dleft style=3D'text-align:left'><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p><p class=3Dxmsonormal =
style=3D'line-height:12.0pt;background:#FFEB9C'><b><span lang=3DEN-US =
style=3D'font-family:Lato;color:black'>[External Email. Be cautious of =
content]</span></b><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3Dxmsonormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>&nbsp;</span>=
<span lang=3DEN-US><o:p></o:p></span></p><div><div><div><div><div><p =
class=3Dxmsonormal><span lang=3DEN-US =
style=3D'font-family:HelveticaNeue'>Hello Aijun.&nbsp;</span><span =
lang=3DEN-US><o:p></o:p></span></p></div><div><p =
class=3Dxmsonormal><span lang=3DEN-US =
style=3D'font-family:HelveticaNeue'>&nbsp;</span><span =
lang=3DEN-US><o:p></o:p></span></p></div><div><p =
class=3Dxmsonormal><span lang=3DEN-US =
style=3D'font-family:HelveticaNeue'>No update to rfc8754 is necessary. =
Rfc8754 was written so new sids can be defined in other documents =
independently.&nbsp;</span><span =
lang=3DEN-US><o:p></o:p></span></p></div><div><p =
class=3Dxmsonormal><span lang=3DEN-US =
style=3D'font-family:HelveticaNeue'>&nbsp;</span><span =
lang=3DEN-US><o:p></o:p></span></p></div><div><p =
class=3Dxmsonormal><span lang=3DEN-US =
style=3D'font-family:HelveticaNeue'>section 4.3.1 says:</span><span =
lang=3DEN-US><o:p></o:p></span></p></div><div><pre><span lang=3DEN-US =
style=3D'font-size:11.0pt'>This document and section define a single =
SRv6 SID.&nbsp; Future documents</span><span =
lang=3DEN-US><o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'font-size:11.0pt'>&nbsp;&nbsp; may define additional SRv6 =
SIDs.&nbsp; In such a case, the entire content</span><span =
lang=3DEN-US><o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'font-size:11.0pt'>&nbsp;&nbsp; of this section will be defined =
in that document.</span><span =
lang=3DEN-US><o:p></o:p></span></pre></div><p class=3Dxmsonormal><span =
lang=3DEN-US style=3D'font-size:11.0pt'>&nbsp;</span><span =
lang=3DEN-US><o:p></o:p></span></p></div><div><p =
class=3Dxmsonormal><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3Dxmsonormal><span =
lang=3DEN-US>Thanks<o:p></o:p></span></p></div><div><p =
class=3Dxmsonormal><span lang=3DEN-US>&nbsp; =
Darren<o:p></o:p></span></p></div><div><p class=3Dxmsonormal><span =
lang=3DEN-US>&nbsp; (Written on =
mobile)<o:p></o:p></span></p></div><div><p class=3Dxmsonormal><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p></div></div><div =
id=3D"x_id-c605c1dd-d42c-45cb-94c1-68ec305cf8dc"><div class=3DMsoNormal =
align=3Dcenter style=3D'text-align:center'><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:=B5=C8=CF=DF'><hr size=3D2 =
width=3D"98%" noshade style=3D'color:black' =
align=3Dcenter></span></div><div id=3D"x_divRplyFwdMsg"><p =
class=3Dxmsonormal><b><span lang=3DEN-US>From:</span></b><span =
lang=3DEN-US> ipv6 &lt;<a =
href=3D"mailto:ipv6-bounces@ietf.org">ipv6-bounces@ietf.org</a>&gt; on =
behalf of Aijun Wang &lt;<a =
href=3D"mailto:wangaj3@chinatelecom.cn">wangaj3@chinatelecom.cn</a>&gt;<b=
r><b>Sent:</b> Sunday, June 14, 2020 10:15 PM<br><b>To:</b> <a =
href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a =
href=3D"mailto:spring@ietf.org">spring@ietf.org</a><br><b>Subject:</b> =
About the upper layer header processing in RFC8754(SRH) =
<o:p></o:p></span></p><div><p class=3Dxmsonormal><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p></div></div><div><p =
class=3Dxmsonormal><span lang=3DEN-US>Hi, Folks:<o:p></o:p></span></p><p =
class=3Dxmsonormal><span lang=3DEN-US>RFC8754(SRH) section 4.3.1.2(<a =
href=3D"https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*se=
ction-4.3.1.2__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDy=
ifP-5j3jjAVQJYjvxKIgrBz$">https://tools..ietf.org/html/rfc8754#section-4.=
3.1.2</a>) describes the process of upper layer header as the =
followings:<o:p></o:p></span></p><p class=3Dxmsonormal align=3Dleft =
style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;color:black'>IF =
(Upper-layer Header is IPv4 or IPv6) and</span><span =
lang=3DEN-US><o:p></o:p></span></p><p class=3Dxmsonormal align=3Dleft =
style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;color:black'>&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp; local configuration permits {</span><span =
lang=3DEN-US><o:p></o:p></span></p><p class=3Dxmsonormal align=3Dleft =
style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;color:black'>&nbsp;&nb=
sp;&nbsp;&nbsp; Perform IPv6 decapsulation</span><span =
lang=3DEN-US><o:p></o:p></span></p><p class=3Dxmsonormal align=3Dleft =
style=3D'text-align:left'><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;color:black'>&nbsp;&nb=
sp;&nbsp;&nbsp; Resubmit the decapsulated packet to the IPv4 or IPv6 =
module</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3Dxmsonormal align=3Dleft style=3D'text-align:left'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;color:black'>&nbsp;&nb=
sp; }</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3Dxmsonormal align=3Dleft style=3D'text-align:left'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;color:black'>&nbsp;&nb=
sp; ELSE {</span><span lang=3DEN-US><o:p></o:p></span></p><p =
class=3Dxmsonormal align=3Dleft style=3D'text-align:left'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;color:black'>&nbsp;&nb=
sp; </span><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;color:black'>=A1=AD=A1=
=AD</span><span lang=3DEN-US><o:p></o:p></span></p><p class=3Dxmsonormal =
style=3D'text-indent:42.0pt'><span =
lang=3DEN-US>}<o:p></o:p></span></p><p class=3Dxmsonormal><span =
lang=3DEN-US>And in network programming draft section 9.1(<a =
href=3D"https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/=
draft-ietf-spring-srv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-=
gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$">htt=
ps://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-program=
ming-15#section-9.1</a>), one new Ethernet Next Header Type(143) is =
proposed.<o:p></o:p></span></p><p class=3Dxmsonormal><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p><p class=3Dxmsonormal><span =
lang=3DEN-US>Although the detail process of this new next header are =
described in the network program draft, &nbsp;does it need to update the =
section 4.3.1.2 of RFC8754 to reflect the process of new header =
type(143)? <o:p></o:p></span></p><p class=3Dxmsonormal><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p><p class=3Dxmsonormal><span =
lang=3DEN-US>Best Regards<o:p></o:p></span></p><p =
class=3Dxmsonormal><span lang=3DEN-US>&nbsp;<o:p></o:p></span></p><p =
class=3Dxmsonormal><span lang=3DEN-US>Aijun Wang<o:p></o:p></span></p><p =
class=3Dxmsonormal><span lang=3DEN-US>China =
Telecom<o:p></o:p></span></p><p class=3Dxmsonormal><span =
lang=3DEN-US>&nbsp;<o:p></o:p></span></p></div></div></div></div></div></=
div></div></div></body></html>
------=_NextPart_000_003F_01D643F4.60A33C00--


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From: Ron Bonica <rbonica@juniper.net>
To: "Darren Dukes (ddukes)" <ddukes=40cisco.com@dmarc.ietf.org>, Aijun Wang <wangaj3@chinatelecom.cn>, "ipv6@ietf.org" <ipv6@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: About the upper layer header processing in RFC8754(SRH)
Thread-Index: AdZCuMJHBVRRTak/QdaJrs+4Mzv0gAAd/7b+AAXz+bAADuDxmQAj8rww
Date: Tue, 16 Jun 2020 19:22:47 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/NhWsfENb9eQ606xU-5rtVga8VLo>
Subject: Re: [spring] About the upper layer header processing in RFC8754(SRH)
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Darren,

Will the SID defined in RFC 8754 appear in the IANA SRv6 Endpoint Behavior =
Sub-registry? If not, can it be implemented?

                                                                           =
                        Ron




Juniper Business Use Only
From: Darren Dukes (ddukes) <ddukes=3D40cisco.com@dmarc.ietf.org>
Sent: Monday, June 15, 2020 10:17 PM
To: Ron Bonica <rbonica@juniper.net>; Aijun Wang <wangaj3@chinatelecom.cn>;=
 ipv6@ietf.org; spring@ietf.org
Subject: Re: About the upper layer header processing in RFC8754(SRH)

[External Email. Be cautious of content]

Hi Ron.

The SID described in RFC8754 is fully described there.

The SIDs in draft-ietf-spring-SRv6-network-programming are fully defined in=
 that document.

Darren

________________________________
From: Ron Bonica <rbonica=3D40juniper.net@dmarc.ietf.org<mailto:rbonica=3D4=
0juniper.net@dmarc.ietf.org>>
Sent: Monday, June 15, 2020 3:08:12 PM
To: Darren Dukes (ddukes) <ddukes@cisco.com<mailto:ddukes@cisco.com>>; Aiju=
n Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>; ipv6@ietf=
.org<mailto:ipv6@ietf.org> <ipv6@ietf.org<mailto:ipv6@ietf.org>>; spring@ie=
tf.org<mailto:spring@ietf.org> <spring@ietf.org<mailto:spring@ietf.org>>
Subject: RE: About the upper layer header processing in RFC8754(SRH)


Darren,



Does the SID described in RFC 8754 represent any of the SIDs in the Network=
 Programming Draft? In any other document?



                                                                           =
   Ron





Juniper Business Use Only

From: ipv6 <ipv6-bounces@ietf.org<mailto:ipv6-bounces@ietf.org>> On Behalf =
Of Darren Dukes (ddukes)
Sent: Monday, June 15, 2020 12:21 PM
To: Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>; i=
pv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf.org>
Subject: Re: About the upper layer header processing in RFC8754(SRH)



[External Email. Be cautious of content]



Hello Aijun.



No update to rfc8754 is necessary. Rfc8754 was written so new sids can be d=
efined in other documents independently.



section 4.3.1 says:

This document and section define a single SRv6 SID.  Future documents

   may define additional SRv6 SIDs.  In such a case, the entire content

   of this section will be defined in that document.





Thanks

  Darren

  (Written on mobile)



________________________________

From: ipv6 <ipv6-bounces@ietf.org<mailto:ipv6-bounces@ietf.org>> on behalf =
of Aijun Wang <wangaj3@chinatelecom.cn<mailto:wangaj3@chinatelecom.cn>>
Sent: Sunday, June 14, 2020 10:15 PM
To: ipv6@ietf.org<mailto:ipv6@ietf.org>; spring@ietf.org<mailto:spring@ietf=
.org>
Subject: About the upper layer header processing in RFC8754(SRH)



Hi, Folks:

RFC8754(SRH) section 4.3.1.2(https://tools..ietf.org/html/rfc8754#section-4=
.3.1.2<https://urldefense.com/v3/__https:/tools.ietf.org/html/rfc8754*secti=
on-4.3.1.2__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5=
j3jjAVQJYjvxKIgrBz$>) describes the process of upper layer header as the fo=
llowings:

IF (Upper-layer Header is IPv4 or IPv6) and

       local configuration permits {

     Perform IPv6 decapsulation

     Resubmit the decapsulated packet to the IPv4 or IPv6 module

   }

   ELSE {

   ......

}

And in network programming draft section 9.1(https://datatracker.ietf.org/d=
oc/html/draft-ietf-spring-srv6-network-programming-15#section-9.1<https://u=
rldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-ietf-spring-s=
rv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_ZbJ6IaphycWPj08=
UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$>), one new Ethernet Next He=
ader Type(143) is proposed.



Although the detail process of this new next header are described in the ne=
twork program draft,  does it need to update the section 4.3.1.2 of RFC8754=
 to reflect the process of new header type(143)?



Best Regards



Aijun Wang

China Telecom



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<p class=3D"MsoNormal">Darren,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Will the SID defined in RFC 8754 appear in the IANA =
SRv6 Endpoint Behavior Sub-registry? If not, can it be implemented?<br>
<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron<o:p></o=
:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
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<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
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<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> Darren Dukes (ddukes) &lt;ddukes=3D40ci=
sco.com@dmarc.ietf.org&gt;
<br>
<b>Sent:</b> Monday, June 15, 2020 10:17 PM<br>
<b>To:</b> Ron Bonica &lt;rbonica@juniper.net&gt;; Aijun Wang &lt;wangaj3@c=
hinatelecom.cn&gt;; ipv6@ietf.org; spring@ietf.org<br>
<b>Subject:</b> Re: About the upper layer header processing in RFC8754(SRH)=
<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b><=
span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;colo=
r:black">[External Email. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal">Hi Ron.<o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">The SID described in RFC8754 is fully described ther=
e. &nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">The SIDs in draft-ietf-spring-SRv6-network-programmi=
ng are fully defined in that document.
<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<p class=3D"MsoNormal">Darren<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
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<div id=3D"divRplyFwdMsg">
<p class=3D"MsoNormal"><b><span style=3D"color:black">From:</span></b><span=
 style=3D"color:black"> Ron Bonica &lt;<a href=3D"mailto:rbonica=3D40junipe=
r.net@dmarc.ietf.org">rbonica=3D40juniper.net@dmarc.ietf.org</a>&gt;<br>
<b>Sent:</b> Monday, June 15, 2020 3:08:12 PM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com">dd=
ukes@cisco.com</a>&gt;; Aijun Wang &lt;<a href=3D"mailto:wangaj3@chinatelec=
om.cn">wangaj3@chinatelecom.cn</a>&gt;;
<a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a> &lt;<a href=3D"mailto:ip=
v6@ietf.org">ipv6@ietf.org</a>&gt;;
<a href=3D"mailto:spring@ietf.org">spring@ietf.org</a> &lt;<a href=3D"mailt=
o:spring@ietf.org">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> RE: About the upper layer header processing in RFC8754(SRH)=
</span>
<o:p></o:p></p>
<div>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:11.0pt;font-family:&quot;C=
alibri&quot;,sans-serif">Darren,</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span style=3D"font-size:11.0pt;font-family:&quot;C=
alibri&quot;,sans-serif">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span style=3D"font-size:11.0pt;font-family:&quot;C=
alibri&quot;,sans-serif">Does the SID described in RFC 8754 represent any o=
f the SIDs in the Network Programming Draft? In any other document?</span><=
o:p></o:p></p>
<p class=3D"xmsonormal"><span style=3D"font-size:11.0pt;font-family:&quot;C=
alibri&quot;,sans-serif">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span style=3D"font-size:11.0pt;font-family:&quot;C=
alibri&quot;,sans-serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span style=3D"font-size:11.0pt;font-family:&quot;C=
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<p class=3D"xmsipfooter30b3d538" align=3D"center" style=3D"margin:0in;margi=
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<p class=3D"xmsonormal" align=3D"left" style=3D"text-align:left"><b><span s=
tyle=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif">From:<=
/span></b><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,s=
ans-serif"> ipv6 &lt;<a href=3D"mailto:ipv6-bounces@ietf.org">ipv6-bounces@=
ietf.org</a>&gt;
<b>On Behalf Of </b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Monday, June 15, 2020 12:21 PM<br>
<b>To:</b> Aijun Wang &lt;<a href=3D"mailto:wangaj3@chinatelecom.cn">wangaj=
3@chinatelecom.cn</a>&gt;;
<a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"mailto:sprin=
g@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> Re: About the upper layer header processing in RFC8754(SRH)=
</span><o:p></o:p></p>
</div>
</div>
<p class=3D"xmsonormal" align=3D"left" style=3D"text-align:left"><span styl=
e=3D"font-family:&quot;Calibri&quot;,sans-serif">&nbsp;</span><o:p></o:p></=
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<p class=3D"xmsonormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b>=
<span style=3D"font-family:&quot;Lato&quot;,sans-serif;color:black">[Extern=
al Email. Be cautious of content]</span></b><o:p></o:p></p>
<p class=3D"xmsonormal"><span style=3D"font-size:11.0pt;font-family:&quot;C=
alibri&quot;,sans-serif">&nbsp;</span><o:p></o:p></p>
<div>
<div>
<div>
<div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-family:HelveticaNeue">Hello Aij=
un.&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-family:HelveticaNeue">&nbsp;</s=
pan><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-family:HelveticaNeue">No update=
 to rfc8754 is necessary. Rfc8754 was written so new sids can be defined in=
 other documents independently.&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-family:HelveticaNeue">&nbsp;</s=
pan><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-family:HelveticaNeue">section 4=
.3.1 says:</span><o:p></o:p></p>
</div>
<div>
<pre><span style=3D"font-size:11.0pt">This document and section define a si=
ngle SRv6 SID.&nbsp; Future documents</span><o:p></o:p></pre>
<pre><span style=3D"font-size:11.0pt">&nbsp;&nbsp; may define additional SR=
v6 SIDs.&nbsp; In such a case, the entire content</span><o:p></o:p></pre>
<pre><span style=3D"font-size:11.0pt">&nbsp;&nbsp; of this section will be =
defined in that document.</span><o:p></o:p></pre>
</div>
<p class=3D"xmsonormal"><span style=3D"font-size:11.0pt;font-family:&quot;C=
alibri&quot;,sans-serif">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-family:&quot;Calibri&quot;,sans=
-serif">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal">Thanks<o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-family:&quot;Calibri&quot;,sans=
-serif">&nbsp;</span> Darren<o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-family:&quot;Calibri&quot;,sans=
-serif">&nbsp;</span> (Written on mobile)<o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-family:&quot;Calibri&quot;,sans=
-serif">&nbsp;</span><o:p></o:p></p>
</div>
</div>
<div id=3D"x_id-c605c1dd-d42c-45cb-94c1-68ec305cf8dc">
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center"><span=
 style=3D"font-size:10.5pt;font-family:DengXian">
<hr size=3D"2" width=3D"98%" noshade=3D"" style=3D"color:black" align=3D"ce=
nter">
</span></div>
<div id=3D"x_divRplyFwdMsg">
<p class=3D"xmsonormal"><b>From:</b> ipv6 &lt;<a href=3D"mailto:ipv6-bounce=
s@ietf.org">ipv6-bounces@ietf.org</a>&gt; on behalf of Aijun Wang &lt;<a hr=
ef=3D"mailto:wangaj3@chinatelecom.cn">wangaj3@chinatelecom.cn</a>&gt;<br>
<b>Sent:</b> Sunday, June 14, 2020 10:15 PM<br>
<b>To:</b> <a href=3D"mailto:ipv6@ietf.org">ipv6@ietf.org</a>; <a href=3D"m=
ailto:spring@ietf.org">
spring@ietf.org</a><br>
<b>Subject:</b> About the upper layer header processing in RFC8754(SRH) <o:=
p></o:p></p>
<div>
<p class=3D"xmsonormal"><span style=3D"font-family:&quot;Calibri&quot;,sans=
-serif">&nbsp;</span><o:p></o:p></p>
</div>
</div>
<div>
<p class=3D"xmsonormal">Hi, Folks:<o:p></o:p></p>
<p class=3D"xmsonormal">RFC8754(SRH) section 4.3.1.2(<a href=3D"https://url=
defense.com/v3/__https:/tools.ietf.org/html/rfc8754*section-4.3.1.2__;Iw!!N=
Et6yMaO-gk!W4_ZbJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjvxKIgrBz=
$">https://tools..ietf.org/html/rfc8754#section-4.3.1.2</a>)
 describes the process of upper layer header as the followings:<o:p></o:p><=
/p>
<p class=3D"xmsonormal" align=3D"left" style=3D"text-align:left"><span styl=
e=3D"font-size:10.0pt;font-family:SimSun;color:black">IF (Upper-layer Heade=
r is IPv4 or IPv6) and</span><o:p></o:p></p>
<p class=3D"xmsonormal" align=3D"left" style=3D"text-align:left"><span styl=
e=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp; local configuration permits {</span><o:p></o:p></p>
<p class=3D"xmsonormal" align=3D"left" style=3D"text-align:left"><span styl=
e=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;&nbsp;&nbsp;&nb=
sp; Perform IPv6 decapsulation</span><o:p></o:p></p>
<p class=3D"xmsonormal" align=3D"left" style=3D"text-align:left"><span styl=
e=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;&nbsp;&nbsp;&nb=
sp; Resubmit the decapsulated packet to the IPv4 or IPv6 module</span><o:p>=
</o:p></p>
<p class=3D"xmsonormal" align=3D"left" style=3D"text-align:left"><span styl=
e=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;&nbsp; }</span>=
<o:p></o:p></p>
<p class=3D"xmsonormal" align=3D"left" style=3D"text-align:left"><span styl=
e=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;&nbsp; ELSE {</=
span><o:p></o:p></p>
<p class=3D"xmsonormal" align=3D"left" style=3D"text-align:left"><span styl=
e=3D"font-size:10.0pt;font-family:SimSun;color:black">&nbsp;&nbsp; &#8230;&=
#8230;</span><o:p></o:p></p>
<p class=3D"xmsonormal" style=3D"text-indent:42.0pt">}<o:p></o:p></p>
<p class=3D"xmsonormal">And in network programming draft section 9.1(<a hre=
f=3D"https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft=
-ietf-spring-srv6-network-programming-15*section-9.1__;Iw!!NEt6yMaO-gk!W4_Z=
bJ6IaphycWPj08UYd8k9IPlcBP_h6HEasypDyifP-5j3jjAVQJYjv0iiulaO$">https://data=
tracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-programming-15#sec=
tion-9.1</a>),
 one new Ethernet Next Header Type(143) is proposed.<o:p></o:p></p>
<p class=3D"xmsonormal"><span style=3D"font-family:&quot;Calibri&quot;,sans=
-serif">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal">Although the detail process of this new next header=
 are described in the network program draft,
<span style=3D"font-family:&quot;Calibri&quot;,sans-serif">&nbsp;</span>doe=
s it need to update the section 4.3.1.2 of RFC8754 to reflect the process o=
f new header type(143)?
<o:p></o:p></p>
<p class=3D"xmsonormal"><span style=3D"font-family:&quot;Calibri&quot;,sans=
-serif">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal">Best Regards<o:p></o:p></p>
<p class=3D"xmsonormal"><span style=3D"font-family:&quot;Calibri&quot;,sans=
-serif">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal">Aijun Wang<o:p></o:p></p>
<p class=3D"xmsonormal">China Telecom<o:p></o:p></p>
<p class=3D"xmsonormal"><span style=3D"font-family:&quot;Calibri&quot;,sans=
-serif">&nbsp;</span><o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>

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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: 'SPRING WG' <spring@ietf.org>
Thread-Topic: Progressing draft-dong-spring-sr-for-enhanced-vpn to enable SR with resource management
Thread-Index: AdYtyUjIii3UkAvgR0enXZkdrDOJSAWx5p7w
Date: Wed, 17 Jun 2020 11:32:33 +0000
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Subject: Re: [spring] Progressing draft-dong-spring-sr-for-enhanced-vpn to enable SR with resource management
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--_000_7948b50a4870431bb6b634ee125deab0huaweicom_
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Hi all,

Thanks a lot for the mail discussion on this document in the past month. I =
summarized the comments received so far, please let me know if I miss anyth=
ing:

1. Several operators shows their interests in introducing resource reservat=
ion/identification capability in SR.

2. There was comments that the meaning of isolation in this draft needs to =
be further clarified.

3. There was some discussion about whether resource reservation is necessar=
y comparing to Diffserv QoS with centralized resource management. The initi=
al conclusion from the discussion is that both diffserv and resource reserv=
ation based mechanisms are tools developed by IETF to meet the customers an=
d operators' requirement, and each can have its application scenarios. Oper=
ators can choose to use either one for specific service/customer in their n=
etwork.

4. There was question about whether per-VPN state will be introduced to SR =
network, this has been clarified and the brief answer is "no".

5. There was also discussion about whether this document should be informat=
ional or standard track, the authors are open to the document type, and wou=
ld like to leave this for the WG to decide during the progress of adoption.

The next step for the authors is to provide a new revision of the draft bas=
ed on these received comments. Thanks.

Best regards,
Jie

From: spring [mailto:spring-bounces@ietf.org] On Behalf Of Dongjie (Jimmy)
Sent: Tuesday, May 19, 2020 6:38 PM
To: SPRING WG <spring@ietf.org>
Cc: draft-dong-spring-sr-for-enhanced-vpn@ietf.org
Subject: [spring] Progressing draft-dong-spring-sr-for-enhanced-vpn to enab=
le SR with resource management

Hi all,

The latest version of draft-dong-spring-sr-for-enhanced-vpn was uploaded in=
 March, which describes a generic enhancement to SR to support resource rep=
resentation and identification, by introducing the resource semantics to SR=
 SIDs. With such enhancement, SR could be used not only for explicit path s=
teering, but could also be used to build resource guaranteed paths or virtu=
al networks. Such SR based resource guaranteed paths or virtual networks ca=
n be used as the underlay to support different VPN services. The mechanism =
introduced in this document is complementary to the existing SR functionali=
ties, and helps to complete the tool set of segment routing.

Based on the discussion on mail list and the presentations on previous IETF=
 meetings, this draft has been revised several times, all the comments rece=
ived so far has been resolved and reflected in the current version. To move=
 forward, the authors would like to know if there are further comments on t=
his document, and people's opinion on whether it is in the right direction.

Comments and feedbacks are welcome.

Best regards,
Jie

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<body lang=3D"ZH-CN" link=3D"#0563C1" vlink=3D"#954F72" style=3D"text-justi=
fy-trim:punctuation">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D">Hi all,=
 <o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D"><o:p>&n=
bsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D">Thanks =
a lot for the mail discussion on this document in the past month. I summari=
zed the comments received so far, please let me know if I miss anything:<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D"><o:p>&n=
bsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D">1. Seve=
ral operators shows their interests in introducing resource reservation/ide=
ntification capability in SR.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D"><o:p>&n=
bsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D">2. Ther=
e was comments that the meaning of isolation in this draft needs to be furt=
her clarified.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D"><o:p>&n=
bsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D">3. Ther=
e was some discussion about whether resource reservation is necessary compa=
ring to Diffserv QoS with centralized resource management. The initial conc=
lusion from the discussion is that both
 diffserv and resource reservation based mechanisms are tools developed by =
IETF to meet the customers and operators&#8217; requirement, and each can h=
ave its application scenarios. Operators can choose to use either one for s=
pecific service/customer in their network.&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D"><o:p>&n=
bsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D">4. Ther=
e was question about whether per-VPN state will be introduced to SR network=
, this has been clarified and the brief answer is &quot;no&quot;.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D"><o:p>&n=
bsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D">5. Ther=
e was also discussion about whether this document should be informational o=
r standard track, the authors are open to the document type, and would like=
 to leave this for the WG to decide during
 the progress of adoption.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D"><o:p>&n=
bsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D">The nex=
t step for the authors is to provide a new revision of the draft based on t=
hese received comments. Thanks.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D"><o:p>&n=
bsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D">Best re=
gards,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D">Jie<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#1F497D"><o:p>&n=
bsp;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><b><span la=
ng=3D"EN-US" style=3D"font-size:11.0pt">From:</span></b><span lang=3D"EN-US=
" style=3D"font-size:11.0pt"> spring [mailto:spring-bounces@ietf.org]
<b>On Behalf Of </b>Dongjie (Jimmy)<br>
<b>Sent:</b> Tuesday, May 19, 2020 6:38 PM<br>
<b>To:</b> SPRING WG &lt;spring@ietf.org&gt;<br>
<b>Cc:</b> draft-dong-spring-sr-for-enhanced-vpn@ietf.org<br>
<b>Subject:</b> [spring] Progressing draft-dong-spring-sr-for-enhanced-vpn =
to enable SR with resource management<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Hi all,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The latest version of draft-don=
g-spring-sr-for-enhanced-vpn was uploaded in March, which describes a gener=
ic enhancement to SR to support resource representation and identification,=
 by introducing the resource semantics
 to SR SIDs. With such enhancement, SR could be used not only for explicit =
path steering, but could also be used to build resource guaranteed paths or=
 virtual networks. Such SR based resource guaranteed paths or virtual netwo=
rks can be used as the underlay
 to support different VPN services. The mechanism introduced in this docume=
nt is complementary to the existing SR functionalities, and helps to comple=
te the tool set of segment routing.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Based on the discussion on mail=
 list and the presentations on previous IETF meetings, this draft has been =
revised several times, all the comments received so far has been resolved a=
nd reflected in the current version.
 To move forward, the authors would like to know if there are further comme=
nts on this document, and people&#8217;s opinion on whether it is in the ri=
ght direction.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Comments and feedbacks are welc=
ome.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Best regards,<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Jie<o:p></o:p></span></p>
</div>
</div>
</body>
</html>

--_000_7948b50a4870431bb6b634ee125deab0huaweicom_--


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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: Martin Vigoureux <martin.vigoureux@nokia.com>, "spring@ietf.org" <spring@ietf.org>
CC: "6man@ietf.org" <6man@ietf.org>, "int-ads@ietf.org" <int-ads@ietf.org>, "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "<rtg-ads@ietf.org>" <rtg-ads@ietf.org>, Rob Shakir <robjs@google.com>, James Guichard <james.n.guichard@futurewei.com>, "Joel M. Halpern" <jmh@joelhalpern.com>
Thread-Topic: [spring] Leadership change
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Date: Thu, 18 Jun 2020 06:12:02 +0000
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Thanks to Rob for your hard work, thanks to Bruno for your continued suppor=
t, and welcome Jim and Joel.=20

Look forward to more achievements in SPRING.=20

Best regards,
Jie

> -----Original Message-----
> From: spring [mailto:spring-bounces@ietf.org] On Behalf Of Martin
> Vigoureux
> Sent: Monday, June 15, 2020 4:25 AM
> To: spring@ietf.org
> Cc: 6man@ietf.org; int-ads@ietf.org; bruno.decraene@orange.com;
> <rtg-ads@ietf.org> <rtg-ads@ietf.org>; Rob Shakir <robjs@google.com>;
> James Guichard <james.n.guichard@futurewei.com>; Joel M. Halpern
> <jmh@joelhalpern.com>
> Subject: [spring] Leadership change
>=20
> WG,
>=20
> Rob had decided to step down as chair some time ago. There hasn't been an=
y
> formal communication on that so I'd like, first, to thank Rob for his wor=
k and
> dedication to the group. Thank you very much Rob.
>=20
> Since that time, I have been actively looking for one (or two) person(s) =
to
> replace him. This has proven to be a very challenging endeavour!
>=20
> But it has finally came to an end.
>=20
> I am pleased to inform you that I have appointed Jim Guichard and Joel
> Halpern as co-chairs of SPRING WG, alongside Bruno.
> Thank you Jim, Thank you Joel, and thank you Bruno.
>=20
>=20
> Martin
> as AD for SPRING
>=20
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring


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From: <bruno.decraene@orange.com>
To: "spring@ietf.org" <spring@ietf.org>
Thread-Topic: WG adoption call for draft-voyer-spring-sr-replication-segment
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Date: Mon, 22 Jun 2020 14:45:51 +0000
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Hi SPRING WG,

Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG =
adoption.

Please indicate your support, comments, or objection, for adopting this dra=
ft as a working group item by July 6th 2020.

Could those who are willing to work on this document, please notify the lis=
t. That gives us an indication of the energy level in the working group to =
work on this.

As a reminder, the call for IPR has been done last November. [2]

Thanks,
Regards,
Bruno, Jim, Joel

[1] https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
[2] https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3=
k/


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From: Ron Bonica <rbonica@juniper.net>
To: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: WG adoption call for draft-voyer-spring-sr-replication-segment
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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Support.

I would be willing to work on the draft.

                          Ron



Juniper Business Use Only

-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of bruno.decraene@orange.c=
om
Sent: Monday, June 22, 2020 10:46 AM
To: spring@ietf.org
Subject: [spring] WG adoption call for draft-voyer-spring-sr-replication-se=
gment

[External Email. Be cautious of content]


Hi SPRING WG,

Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG =
adoption.

Please indicate your support, comments, or objection, for adopting this dra=
ft as a working group item by July 6th 2020.

Could those who are willing to work on this document, please notify the lis=
t. That gives us an indication of the energy level in the working group to =
work on this.

As a reminder, the call for IPR has been done last November. [2]

Thanks,
Regards,
Bruno, Jim, Joel

[1] https://urldefense.com/v3/__https://tools.ietf.org/html/draft-voyer-spr=
ing-sr-replication-segment__;!!NEt6yMaO-gk!Rnz-sCXB_TD-L853wHkZ8EFy-OUaViue=
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From: "Gillis, Kurtis" <kurtis.gillis@bell.ca>
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To: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: [EXT][spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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To: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "spring@ietf.org" <spring@ietf.org>, "spring-bounces@ietf.org" <spring-bounces@ietf.org>
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From: "Stone, Andrew (Nokia - CA/Ottawa)" <andrew.stone@nokia.com>
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Date: Mon, 22 Jun 2020 11:48:27 -0700
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: bruno.decraene@orange.com, SPRING WG List <spring@ietf.org>
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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Support the adoption, willing to work on this document as well as on IDR/PCE related ones.

Cheers,
Jeff
On Jun 22, 2020, 10:46 AM -0700, bruno.decraene@orange.com, wrote:
>
> Hi SPRING WG,
>
> Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG adoption.
>
> Please indicate your support, comments, or objection, for adopting this draft as a working group item by July 6th 2020.
>
> Could those who are willing to work on this document, please notify the list. That gives us an indication of the energy level in the working group to work on this.
>
> As a reminder, the call for IPR has been done last November. [2]
>
> Thanks,
> Regards,
> Bruno, Jim, Joel
>
> [1] tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
> [2] mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3k/
>
>
> _________________________________________________________________________________________________________________________
>
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<head>
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</head>
<body>
<div name=3D=22messageBodySection=22>
<div dir=3D=22auto=22>Support the adoption, willing to work on this docum=
ent as well as on IDR/PCE related ones.</div>
</div>
<div name=3D=22messageSignatureSection=22><br />
<div class=3D=22match=46ont=22>Cheers,
<div>Jeff</div>
</div>
</div>
<div name=3D=22messageReplySection=22>On Jun 22, 2020, 10:46 AM -0700, br=
uno.decraene=40orange.com, wrote:<br />
<blockquote type=3D=22cite=22 style=3D=22border-left-color: grey; border-=
left-width: thin; border-left-style: solid; margin: 5px 5px;padding-left:=
 10px;=22><br />
<div>Hi SPRING WG,<br />
<br />
Authors of draft-voyer-spring-sr-replication-segment =5B1=5D have asked f=
or WG adoption.<br />
<br />
Please indicate your support, comments, or objection, for adopting this d=
raft as a working group item by July 6th 2020.<br />
<br />
Could those who are willing to work on this document, please notify the l=
ist. That gives us an indication of the energy level in the working group=
 to work on this.<br />
<br />
As a reminder, the call for IPR has been done last November. =5B2=5D<br /=
>
<br />
Thanks,<br />
Regards,<br />
Bruno, Jim, Joel<br />
<br />
=5B1=5D <a href=3D'https://tools.ietf.org/html/draft-voyer-spring-sr-repl=
ication-segment'>tools.ietf.org/html/draft-voyer-spring-sr-replication-se=
gment</a><br />
=5B2=5D <a href=3D'https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7Qz=
Cw3ZBb=46D0Dl7Eszd3k/'>mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3Z=
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<br />
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<br />
Ce message et ses pieces jointes peuvent contenir des informations confid=
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cu ce message par erreur, veuillez le signaler<br />
a l&amp;apos;expediteur et le detruire ainsi que les pieces jointes. Les =
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Orange decline toute responsabilite si ce message a ete altere, deforme o=
u falsifie. Merci.<br />
<br />
This message and its attachments may contain confidential or privileged i=
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/>
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=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F<br />
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<a href=3D'https://www.ietf.org/mailman/listinfo/spring'>www.ietf.org/mai=
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From: "Bernier, Daniel" <daniel.bernier@bell.ca>
To: Martin Vigoureux <martin.vigoureux@nokia.com>, "spring@ietf.org" <spring@ietf.org>
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Date: Mon, 22 Jun 2020 20:01:39 +0000
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From: "Henderickx, Wim (Nokia - BE/Antwerp)" <wim.henderickx@nokia.com>
To: "Stone, Andrew (Nokia - CA/Ottawa)" <andrew.stone@nokia.com>, "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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From: Rishabh Parekh <rishabhp@gmail.com>
Date: Mon, 22 Jun 2020 14:20:40 -0700
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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Support as co-author.

-Rishabh

On Mon, Jun 22, 2020 at 7:46 AM <bruno.decraene@orange.com> wrote:
>
> Hi SPRING WG,
>
> Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG adoption.
>
> Please indicate your support, comments, or objection, for adopting this draft as a working group item by July 6th 2020.
>
> Could those who are willing to work on this document, please notify the list. That gives us an indication of the energy level in the working group to work on this.
>
> As a reminder, the call for IPR has been done last November. [2]
>
> Thanks,
> Regards,
> Bruno, Jim, Joel
>
> [1] https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
> [2] https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3k/
>
>
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From: "Voyer, Daniel" <daniel.voyer@bell.ca>
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Thread-Topic: [EXT][spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Support.

Regards,
Jakob.

-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of bruno.decraene@orange.c=
om
Sent: Monday, June 22, 2020 7:46 AM
To: spring@ietf.org
Subject: [spring] WG adoption call for draft-voyer-spring-sr-replication-se=
gment

Hi SPRING WG,

Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG =
adoption.

Please indicate your support, comments, or objection, for adopting this dra=
ft as a working group item by July 6th 2020.

Could those who are willing to work on this document, please notify the lis=
t. That gives us an indication of the energy level in the working group to =
work on this.

As a reminder, the call for IPR has been done last November. [2]

Thanks,
Regards,
Bruno, Jim, Joel

[1] https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
[2] https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3=
k/


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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Support adoption.

Thx,
R.

On Mon, Jun 22, 2020 at 4:46 PM <bruno.decraene@orange.com> wrote:

> Hi SPRING WG,
>
> Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG
> adoption.
>
> Please indicate your support, comments, or objection, for adopting this
> draft as a working group item by July 6th 2020.
>
> Could those who are willing to work on this document, please notify the
> list. That gives us an indication of the energy level in the working group
> to work on this.
>
> As a reminder, the call for IPR has been done last November. [2]
>
> Thanks,
> Regards,
> Bruno, Jim, Joel
>
> [1] https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
> [2]
> https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3k/
>
>
>
> _________________________________________________________________________________________________________________________
>
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> confidentielles ou privilegiees et ne doivent donc
> pas etre diffuses, exploites ou copies sans autorisation. Si vous avez
> recu ce message par erreur, veuillez le signaler
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> electroniques etant susceptibles d'alteration,
> Orange decline toute responsabilite si ce message a ete altere, deforme ou
> falsifie. Merci.
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<div dir=3D"ltr">Support adoption.=C2=A0<div><br></div><div>Thx,</div><div>=
R.</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmai=
l_attr">On Mon, Jun 22, 2020 at 4:46 PM &lt;<a href=3D"mailto:bruno.decraen=
e@orange.com">bruno.decraene@orange.com</a>&gt; wrote:<br></div><blockquote=
 class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px so=
lid rgb(204,204,204);padding-left:1ex">Hi SPRING WG,<br>
<br>
Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG =
adoption.<br>
<br>
Please indicate your support, comments, or objection, for adopting this dra=
ft as a working group item by July 6th 2020.<br>
<br>
Could those who are willing to work on this document, please notify the lis=
t. That gives us an indication of the energy level in the working group to =
work on this.<br>
<br>
As a reminder, the call for IPR has been done last November. [2]<br>
<br>
Thanks,<br>
Regards,<br>
Bruno, Jim, Joel<br>
<br>
[1] <a href=3D"https://tools.ietf.org/html/draft-voyer-spring-sr-replicatio=
n-segment" rel=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html=
/draft-voyer-spring-sr-replication-segment</a><br>
[2] <a href=3D"https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBb=
FD0Dl7Eszd3k/" rel=3D"noreferrer" target=3D"_blank">https://mailarchive.iet=
f.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3k/</a><br>
<br>
<br>
___________________________________________________________________________=
______________________________________________<br>
<br>
Ce message et ses pieces jointes peuvent contenir des informations confiden=
tielles ou privilegiees et ne doivent donc<br>
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu=
 ce message par erreur, veuillez le signaler<br>
a l&#39;expediteur et le detruire ainsi que les pieces jointes. Les message=
s electroniques etant susceptibles d&#39;alteration,<br>
Orange decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.<br>
<br>
This message and its attachments may contain confidential or privileged inf=
ormation that may be protected by law;<br>
they should not be distributed, used or copied without authorisation.<br>
If you have received this email in error, please notify the sender and dele=
te this message and its attachments.<br>
As emails may be altered, Orange is not liable for messages that have been =
modified, changed or falsified.<br>
Thank you.<br>
<br>
_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/listinfo/spring</a><br>
</blockquote></div>

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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/dZkriELeXKmuwvzICmPFTlKZ9P0>
Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Hi WG,
I support the adoption.=20

Thanks,
Tanmoy

-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of bruno.decraene@orange.c=
om
Sent: Monday, June 22, 2020 7:46 AM
To: spring@ietf.org
Subject: [spring] WG adoption call for draft-voyer-spring-sr-replication-se=
gment

Hi SPRING WG,

Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG =
adoption.

Please indicate your support, comments, or objection, for adopting this dra=
ft as a working group item by July 6th 2020.

Could those who are willing to work on this document, please notify the lis=
t. That gives us an indication of the energy level in the working group to =
work on this.

As a reminder, the call for IPR has been done last November. [2]

Thanks,
Regards,
Bruno, Jim, Joel

[1] https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
[2] https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3=
k/


___________________________________________________________________________=
______________________________________________

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ute responsabilite si ce message a ete altere, deforme ou falsifie. Merci.

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 or copied without authorisation.
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modified, changed or falsified.
Thank you.

_______________________________________________
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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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From: Thierry Couture <thierry@arabrab.com>
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To: bruno.decraene@orange.com
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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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I support adoption.

Thierry Couture.

> On Jun 22, 2020, at 10:45, bruno.decraene@orange.com wrote:
>=20
> Hi SPRING WG,
>=20
> Authors of draft-voyer-spring-sr-replication-segment [1] have asked =
for WG adoption.
>=20
> Please indicate your support, comments, or objection, for adopting =
this draft as a working group item by July 6th 2020.
>=20
> Could those who are willing to work on this document, please notify =
the list. That gives us an indication of the energy level in the working =
group to work on this.
>=20
> As a reminder, the call for IPR has been done last November. [2]
>=20
> Thanks,
> Regards,
> Bruno, Jim, Joel
>=20
> [1] =
https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
> [2] =
https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3k/
>=20
>=20
> =
__________________________________________________________________________=
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>=20
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>=20
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From: "Richard Vallee (rvallee)" <rvallee@cisco.com>
To: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "spring@ietf.org" <spring@ietf.org>
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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
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From nobody Mon Jun 22 20:44:12 2020
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To: "Dongjie (Jimmy)" <jie.dong@huawei.com>, 'SPRING WG' <spring@ietf.org>
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From: "Joel M. Halpern" <jmh@joelhalpern.com>
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Subject: Re: [spring] FW: New Version Notification for draft-dong-spring-sr-for-enhanced-vpn-08.txt
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Thank you for the work and improvements in thsi draft.

I have one thought, as an individual participant, with regard to one 
small part of this draft.  The bullet list in section 4 seems to 
duplicate / overlap with the work being done in the TEAS network slicing 
design team, which does not yet have working group rough consensus even 
for adoption.  It will be challenging for this work to carefully track 
that document.  Would it damage the overall message of this document if 
the 6 bullets were removed?

Thank you,
Joel

On 6/22/2020 11:17 PM, Dongjie (Jimmy) wrote:
> Hi all,
> 
> FYI we have uploaded a new revision of draft-dong-spring-sr-for-enhanced-vpn to resolve the comments received recently. Please take a look and let us know if your comments have been addressed. Thanks.
> 
> Best regards,
> Jie
> 
> -----Original Message-----
> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]
> Sent: Monday, June 22, 2020 5:22 PM
> To: Dongjie (Jimmy) <jie.dong@huawei.com>; Yongqing Zhu <zhuyq8@chinatelecom.cn>; Takuya Miyasaka <ta-miyasaka@kddi.com>; Fengwei Qin <qinfengwei@chinamobile.com>; Stewart Bryant <stewart.bryant@gmail.com>; Zhenqiang Li <li_zhenqiang@hotmail.com>
> Subject: New Version Notification for draft-dong-spring-sr-for-enhanced-vpn-08.txt
> 
> 
> A new version of I-D, draft-dong-spring-sr-for-enhanced-vpn-08.txt
> has been successfully submitted by Jie Dong and posted to the IETF repository.
> 
> Name:		draft-dong-spring-sr-for-enhanced-vpn
> Revision:	08
> Title:		Segment Routing for Resource Guaranteed Virtual Networks
> Document date:	2020-06-22
> Group:		Individual Submission
> Pages:		18
> URL:            https://www.ietf.org/internet-drafts/draft-dong-spring-sr-for-enhanced-vpn-08.txt
> Status:         https://datatracker.ietf.org/doc/draft-dong-spring-sr-for-enhanced-vpn/
> Htmlized:       https://tools.ietf.org/html/draft-dong-spring-sr-for-enhanced-vpn-08
> Htmlized:       https://datatracker.ietf.org/doc/html/draft-dong-spring-sr-for-enhanced-vpn
> Diff:           https://www.ietf.org/rfcdiff?url2=draft-dong-spring-sr-for-enhanced-vpn-08
> 
> Abstract:
>     This document describes the mechanism to associate Segment Routing
>     Identifiers (SIDs) with network resource attributes.  The resource-
>     aware SIDs retain their original functionality, with the additional
>     semantics of identifying the set of network resources available for
>     the packet processing action.  These SIDs can be used to build SR
>     paths with reserved network resources.  In addition, these SID can
>     also be used to build SR based virtual networks, which provide the
>     network topology and resource attributes required by particular
>     services.  The proposed mechanism is applicable to both segment
>     routing with MPLS data plane (SR-MPLS) and segment routing with IPv6
>     data plane (SRv6).
> 
> 
>                                                                                    
> 
> 
> Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org.
> 
> The IETF Secretariat
> 
> 
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
> 


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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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I support the adoption of this document and would be willing to work on its=
 progression through Spring WG as well it's related protocol extensions in =
other routing WGs.

Thanks,
Ketan=20

-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of bruno.decraene@orange.c=
om
Sent: 22 June 2020 20:16
To: spring@ietf.org
Subject: [spring] WG adoption call for draft-voyer-spring-sr-replication-se=
gment

Hi SPRING WG,

Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG =
adoption.

Please indicate your support, comments, or objection, for adopting this dra=
ft as a working group item by July 6th 2020.

Could those who are willing to work on this document, please notify the lis=
t. That gives us an indication of the energy level in the working group to =
work on this.

As a reminder, the call for IPR has been done last November. [2]

Thanks,
Regards,
Bruno, Jim, Joel

[1] https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
[2] https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3=
k/


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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Tue, 23 Jun 2020 02:15:07 -0400
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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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--0000000000008ade6805a8ba4802
Content-Type: text/plain; charset="UTF-8"

I support WG adoption of this draft.  I am very interested In development
of this draft from a protocol specification standpoint as well as
progressing the draft through Spring WG.  I am also interested in related
 protocol extension development in other WGs.

As a member of PIM and MBONED and lifetime advocate of all multicast
related technologies and technical SME in the multicast area, I believe
this draft is critical for SR development for native multicast p-tree to
come to fruition.

Kind Regards

Gyan

On Tue, Jun 23, 2020 at 1:48 AM Ketan Talaulikar (ketant) <ketant=
40cisco.com@dmarc.ietf.org> wrote:

> I support the adoption of this document and would be willing to work on
> its progression through Spring WG as well it's related protocol extensions
> in other routing WGs.
>
> Thanks,
> Ketan
>
> -----Original Message-----
> From: spring <spring-bounces@ietf.org> On Behalf Of
> bruno.decraene@orange.com
> Sent: 22 June 2020 20:16
> To: spring@ietf.org
> Subject: [spring] WG adoption call for
> draft-voyer-spring-sr-replication-segment
>
> Hi SPRING WG,
>
> Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG
> adoption.
>
> Please indicate your support, comments, or objection, for adopting this
> draft as a working group item by July 6th 2020.
>
> Could those who are willing to work on this document, please notify the
> list. That gives us an indication of the energy level in the working group
> to work on this.
>
> As a reminder, the call for IPR has been done last November. [2]
>
> Thanks,
> Regards,
> Bruno, Jim, Joel
>
> [1] https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
> [2]
> https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3k/
>
>
>
> _________________________________________________________________________________________________________________________
>
> Ce message et ses pieces jointes peuvent contenir des informations
> confidentielles ou privilegiees et ne doivent donc pas etre diffuses,
> exploites ou copies sans autorisation. Si vous avez recu ce message par
> erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les
> pieces jointes. Les messages electroniques etant susceptibles d'alteration,
> Orange decline toute responsabilite si ce message a ete altere, deforme ou
> falsifie. Merci.
>
> This message and its attachments may contain confidential or privileged
> information that may be protected by law; they should not be distributed,
> used or copied without authorisation.
> If you have received this email in error, please notify the sender and
> delete this message and its attachments.
> As emails may be altered, Orange is not liable for messages that have been
> modified, changed or falsified.
> Thank you.
>
> _______________________________________________
> spring mailing list
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> https://www.ietf.org/mailman/listinfo/spring
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
-- 

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--0000000000008ade6805a8ba4802
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<div><br></div><div dir=3D"auto">I support WG adoption of this draft.=C2=A0=
 I am very interested In development of this draft from a protocol specific=
ation standpoint as well as progressing the draft through Spring WG.=C2=A0 =
I am also interested in related =C2=A0protocol extension development in oth=
er WGs.</div><div dir=3D"auto"><br></div><div dir=3D"auto">As a member of P=
IM and MBONED and lifetime advocate of all multicast related technologies a=
nd technical SME in the multicast area, I believe this draft is critical fo=
r SR development for native multicast p-tree to come to fruition.</div><div=
 dir=3D"auto"><br></div><div dir=3D"auto">Kind Regards=C2=A0</div><div dir=
=3D"auto"><br></div><div dir=3D"auto">Gyan</div><div><br><div class=3D"gmai=
l_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Jun 23, 2020 at 1:48=
 AM Ketan Talaulikar (ketant) &lt;ketant=3D<a href=3D"mailto:40cisco.com@dm=
arc.ietf.org">40cisco.com@dmarc.ietf.org</a>&gt; wrote:<br></div><blockquot=
e class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width=
:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204=
,204)">I support the adoption of this document and would be willing to work=
 on its progression through Spring WG as well it&#39;s related protocol ext=
ensions in other routing WGs.<br>
<br>
Thanks,<br>
Ketan <br>
<br>
-----Original Message-----<br>
From: spring &lt;<a href=3D"mailto:spring-bounces@ietf.org" target=3D"_blan=
k">spring-bounces@ietf.org</a>&gt; On Behalf Of <a href=3D"mailto:bruno.dec=
raene@orange.com" target=3D"_blank">bruno.decraene@orange.com</a><br>
Sent: 22 June 2020 20:16<br>
To: <a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a=
><br>
Subject: [spring] WG adoption call for draft-voyer-spring-sr-replication-se=
gment<br>
<br>
Hi SPRING WG,<br>
<br>
Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG =
adoption.<br>
<br>
Please indicate your support, comments, or objection, for adopting this dra=
ft as a working group item by July 6th 2020.<br>
<br>
Could those who are willing to work on this document, please notify the lis=
t. That gives us an indication of the energy level in the working group to =
work on this.<br>
<br>
As a reminder, the call for IPR has been done last November. [2]<br>
<br>
Thanks,<br>
Regards,<br>
Bruno, Jim, Joel<br>
<br>
[1] <a href=3D"https://tools.ietf.org/html/draft-voyer-spring-sr-replicatio=
n-segment" rel=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html=
/draft-voyer-spring-sr-replication-segment</a><br>
[2] <a href=3D"https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBb=
FD0Dl7Eszd3k/" rel=3D"noreferrer" target=3D"_blank">https://mailarchive.iet=
f.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3k/</a><br>
<br>
<br>
___________________________________________________________________________=
______________________________________________<br>
<br>
Ce message et ses pieces jointes peuvent contenir des informations confiden=
tielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou =
copies sans autorisation. Si vous avez recu ce message par erreur, veuillez=
 le signaler a l&#39;expediteur et le detruire ainsi que les pieces jointes=
. Les messages electroniques etant susceptibles d&#39;alteration, Orange de=
cline toute responsabilite si ce message a ete altere, deforme ou falsifie.=
 Merci.<br>
<br>
This message and its attachments may contain confidential or privileged inf=
ormation that may be protected by law; they should not be distributed, used=
 or copied without authorisation.<br>
If you have received this email in error, please notify the sender and dele=
te this message and its attachments.<br>
As emails may be altered, Orange is not liable for messages that have been =
modified, changed or falsified.<br>
Thank you.<br>
<br>
_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/listinfo/spring</a><br>
<br>
_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/listinfo/spring</a><br>
</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"l=
tr"><div><p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com=
/" style=3D"color:rgb(17,85,204);padding-bottom:1em;display:inline-block" t=
arget=3D"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz=
-logo-email" width=3D"81" height=3D"18" style=3D"height:18px;width:81px"></=
a><br></p><p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NH=
G DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b=
></p><p style=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font fac=
e=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutio=
ns A</i></font><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=
=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px;line-height:13px;=
color:black"><i><font face=3D"georgia, serif">M 301 502-1347<br>13101 Colum=
bia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div></di=
v></div></div></div></div></div></div></div>

--0000000000008ade6805a8ba4802--


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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: "Joel M. Halpern" <jmh@joelhalpern.com>, 'SPRING WG' <spring@ietf.org>
Thread-Topic: [spring] FW: New Version Notification for draft-dong-spring-sr-for-enhanced-vpn-08.txt
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To: "Dongjie (Jimmy)" <jie.dong@huawei.com>, "Joel M. Halpern" <jmh@joelhalpern.com>, 'SPRING WG' <spring@ietf.org>
References: <159281769370.6262.7258934308703044171@ietfa.amsl.com> <341f004378d8408097890b0d24ca812e@huawei.com> <46e25914-3a57-ab82-ebcc-7e7348106808@joelhalpern.com> <d32190686915476ea6f5c27f0e127390@huawei.com>
From: Joel Halpern Direct <jmh.direct@joelhalpern.com>
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Date: Tue, 23 Jun 2020 08:46:36 -0400
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Subject: Re: [spring] FW: New Version Notification for draft-dong-spring-sr-for-enhanced-vpn-08.txt
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Thank you Jie.  Yes, I think it would help to do what you describe, 
reducing those discussions in this document.

Yours,
Joel

On 6/23/2020 3:08 AM, Dongjie (Jimmy) wrote:
> Hi Joel,
> 
> Thanks for your reply and comment.
> 
> The bullet list in section 4 was introduced before the TEAS NS design team, while I understand that it is related to the topic under discussion in the design team. Perhaps we could reduce such description in this document and leave the details for the design team. Does this solve your comment?
> 
> Best regards,
> Jie
> 
>> -----Original Message-----
>> From: Joel M. Halpern [mailto:jmh@joelhalpern.com]
>> Sent: Tuesday, June 23, 2020 11:44 AM
>> To: Dongjie (Jimmy) <jie.dong@huawei.com>; 'SPRING WG' <spring@ietf.org>
>> Subject: Re: [spring] FW: New Version Notification for
>> draft-dong-spring-sr-for-enhanced-vpn-08.txt
>>
>> Thank you for the work and improvements in thsi draft.
>>
>> I have one thought, as an individual participant, with regard to one small part
>> of this draft.  The bullet list in section 4 seems to duplicate / overlap with
>> the work being done in the TEAS network slicing design team, which does not
>> yet have working group rough consensus even for adoption.  It will be
>> challenging for this work to carefully track that document.  Would it damage
>> the overall message of this document if the 6 bullets were removed?
>>
>> Thank you,
>> Joel
>>
>> On 6/22/2020 11:17 PM, Dongjie (Jimmy) wrote:
>>> Hi all,
>>>
>>> FYI we have uploaded a new revision of
>> draft-dong-spring-sr-for-enhanced-vpn to resolve the comments received
>> recently. Please take a look and let us know if your comments have been
>> addressed. Thanks.
>>>
>>> Best regards,
>>> Jie
>>>
>>> -----Original Message-----
>>> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]
>>> Sent: Monday, June 22, 2020 5:22 PM
>>> To: Dongjie (Jimmy) <jie.dong@huawei.com>; Yongqing Zhu
>>> <zhuyq8@chinatelecom.cn>; Takuya Miyasaka <ta-miyasaka@kddi.com>;
>>> Fengwei Qin <qinfengwei@chinamobile.com>; Stewart Bryant
>>> <stewart.bryant@gmail.com>; Zhenqiang Li <li_zhenqiang@hotmail.com>
>>> Subject: New Version Notification for
>>> draft-dong-spring-sr-for-enhanced-vpn-08.txt
>>>
>>>
>>> A new version of I-D, draft-dong-spring-sr-for-enhanced-vpn-08.txt
>>> has been successfully submitted by Jie Dong and posted to the IETF
>> repository.
>>>
>>> Name:		draft-dong-spring-sr-for-enhanced-vpn
>>> Revision:	08
>>> Title:		Segment Routing for Resource Guaranteed Virtual Networks
>>> Document date:	2020-06-22
>>> Group:		Individual Submission
>>> Pages:		18
>>> URL:
>> https://www.ietf.org/internet-drafts/draft-dong-spring-sr-for-enhanced-vpn-
>> 08.txt
>>> Status:
>> https://datatracker.ietf.org/doc/draft-dong-spring-sr-for-enhanced-vpn/
>>> Htmlized:
>> https://tools.ietf.org/html/draft-dong-spring-sr-for-enhanced-vpn-08
>>> Htmlized:
>> https://datatracker.ietf.org/doc/html/draft-dong-spring-sr-for-enhanced-vpn
>>> Diff:
>> https://www.ietf.org/rfcdiff?url2=draft-dong-spring-sr-for-enhanced-vpn-08
>>>
>>> Abstract:
>>>      This document describes the mechanism to associate Segment
>> Routing
>>>      Identifiers (SIDs) with network resource attributes.  The resource-
>>>      aware SIDs retain their original functionality, with the additional
>>>      semantics of identifying the set of network resources available for
>>>      the packet processing action.  These SIDs can be used to build SR
>>>      paths with reserved network resources.  In addition, these SID can
>>>      also be used to build SR based virtual networks, which provide the
>>>      network topology and resource attributes required by particular
>>>      services.  The proposed mechanism is applicable to both segment
>>>      routing with MPLS data plane (SR-MPLS) and segment routing with
>> IPv6
>>>      data plane (SRv6).
>>>
>>>
>>>
>>>
>>>
>>> Please note that it may take a couple of minutes from the time of
>> submission until the htmlized version and diff are available at tools.ietf.org.
>>>
>>> The IETF Secretariat
>>>
>>>
>>> _______________________________________________
>>> spring mailing list
>>> spring@ietf.org
>>> https://www.ietf.org/mailman/listinfo/spring
>>>


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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Support

Gaurav

Sent from my iPhone

> On Jun 22, 2020, at 7:46 AM, bruno.decraene@orange.com wrote:
>=20
> =EF=BB=BFHi SPRING WG,
>=20
> Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG=
 adoption.
>=20
> Please indicate your support, comments, or objection, for adopting this dr=
aft as a working group item by July 6th 2020.
>=20
> Could those who are willing to work on this document, please notify the li=
st. That gives us an indication of the energy level in the working group to w=
ork on this.
>=20
> As a reminder, the call for IPR has been done last November. [2]
>=20
> Thanks,
> Regards,
> Bruno, Jim, Joel
>=20
> [1] https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
> [2] https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd=
3k/
>=20
>=20
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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Tue, 23 Jun 2020 13:20:00 -0400
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Subject: [spring] Spring SR question??
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--0000000000005cb41705a8c39247
Content-Type: text/plain; charset="UTF-8"
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All

SR-MPLS utilizes IPv4 data plane and and can service v4 v6 edges  6to4
softwire mesh framework from the VPN overlay aspect.

Can SR-MPLS use IPV6 data plane?

Reason why I am asking is that it is very simple to get from LDPv4 core to
SR-MPLS core.

However if you have an existing brown field SP core and your end goal is to
get to SRv6 - how can you easily get there.

So my thoughts are you can use SR-MPLS as a stepping stone so to speak to
get to SRv6.

To that end you could use Greg Mirsky draft of tunneling SR-MPLS in SRV6
interoperability and use other inter operability drafts.

But let=E2=80=99s say you prefer to get from point A go point B seamlessly =
and
native naturally without any translation.

An analogy would be migratory to IPV6 instead of using translation
technology tunnels you dual stand the entire network and use ds-lite or LSN
or 6RD to close the gap.

So my thoughts on getting to the =E2=80=9Cend state=E2=80=9D SRv6 are we fo=
llows:

MPLS LDPv4

MPLS LDPv6

SR-MPLS v6

Once you have a v6 core and you have decommissioned LDPv6 you now have the
v6 data plan ready to go to get to SRv6

SRv6

Only caveat with this idea is I am not sure if SR-MPLS supports IPv6 data
plane v6 label binding.


Kind Regards

Gyan

--=20

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--0000000000005cb41705a8c39247
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Content-Transfer-Encoding: quoted-printable

<div dir=3D"auto"><br></div><div dir=3D"auto">All</div><div dir=3D"auto"><b=
r></div><div dir=3D"auto">SR-MPLS utilizes IPv4 data plane and and can serv=
ice v4 v6 edges =C2=A06to4 softwire mesh framework from the VPN overlay asp=
ect.</div><div dir=3D"auto"><br></div><div dir=3D"auto">Can SR-MPLS use IPV=
6 data plane?</div><div dir=3D"auto"><br></div><div dir=3D"auto">Reason why=
 I am asking is that it is very simple to get from LDPv4 core to SR-MPLS co=
re.</div><div dir=3D"auto"><br></div><div dir=3D"auto">However if you have =
an existing brown field SP core and your end goal is to get to SRv6 - how c=
an you easily get there.</div><div dir=3D"auto"><br></div><div dir=3D"auto"=
>So my thoughts are you can use SR-MPLS as a stepping stone so to speak to =
get to SRv6.</div><div dir=3D"auto"><br></div><div dir=3D"auto">To that end=
 you could use Greg Mirsky draft of tunneling SR-MPLS in SRV6 interoperabil=
ity and use other inter operability drafts. =C2=A0</div><div dir=3D"auto"><=
br></div><div dir=3D"auto">But let=E2=80=99s say you prefer to get from poi=
nt A go point B seamlessly and native naturally without any translation.</d=
iv><div dir=3D"auto"><br></div><div dir=3D"auto">An analogy would be migrat=
ory to IPV6 instead of using translation technology tunnels you dual stand =
the entire network and use ds-lite or LSN or 6RD to close the gap.</div><di=
v dir=3D"auto"><br></div><div dir=3D"auto">So my thoughts on getting to the=
 =E2=80=9Cend state=E2=80=9D SRv6 are we follows:</div><div dir=3D"auto"><b=
r></div><div dir=3D"auto">MPLS LDPv4=C2=A0</div><div dir=3D"auto"><br></div=
><div dir=3D"auto">MPLS LDPv6=C2=A0</div><div dir=3D"auto"><br></div><div d=
ir=3D"auto">SR-MPLS v6=C2=A0</div><div dir=3D"auto"><br></div><div dir=3D"a=
uto">Once you have a v6 core and you have decommissioned LDPv6 you now have=
 the v6 data plan ready to go to get to SRv6</div><div dir=3D"auto"><br></d=
iv><div dir=3D"auto">SRv6</div><div dir=3D"auto"><br></div><div dir=3D"auto=
">Only caveat with this idea is I am not sure if SR-MPLS supports IPv6 data=
 plane v6 label binding.</div><div dir=3D"auto"><br></div><div dir=3D"auto"=
><br></div><div dir=3D"auto">Kind Regards=C2=A0</div><div dir=3D"auto"><br>=
</div><div dir=3D"auto">Gyan</div><div dir=3D"auto"><br></div>-- <br><div d=
ir=3D"ltr" class=3D"gmail_signature" data-smartmail=3D"gmail_signature"><di=
v dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=
=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div><p style=3D"color:rgb(34,34=
,34)"><a href=3D"http://www.verizon.com/" style=3D"color:rgb(17,85,204);pad=
ding-bottom:1em;display:inline-block" target=3D"_blank"><img src=3D"http://=
ss7.vzw.com/is/image/VerizonWireless/vz-logo-email" width=3D"81" height=3D"=
18" style=3D"height:18px;width:81px"></a><br></p><p style=3D"font-size:1em;=
margin:0px;font-family:&quot;Verizon NHG DS&quot;,Arial,sans-serif;line-hei=
ght:13px;color:black"><b>Gyan Mishra</b></p><p style=3D"color:rgb(34,34,34)=
;margin:0px;line-height:13px"><font face=3D"georgia, serif" style=3D"color:=
black;font-size:1em"><i>Network Solutions A</i></font><font color=3D"#00000=
0" face=3D"georgia, serif"><i>rchitect=C2=A0</i></font></p><p style=3D"font=
-size:1em;margin:0px;line-height:13px;color:black"><i><font face=3D"georgia=
, serif">M 301 502-1347<br>13101 Columbia Pike=C2=A0<br></font></i>Silver S=
pring, MD</p></div><div><br></div></div></div></div></div></div></div></div=
></div>

--0000000000005cb41705a8c39247--


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Support the adoption.=20

Best,
Ehsan

> On Jun 22, 2020, at 7:45 AM, bruno.decraene@orange.com wrote:
>=20
> Hi SPRING WG,
>=20
> Authors of draft-voyer-spring-sr-replication-segment [1] have asked for W=
G adoption.
>=20
> Please indicate your support, comments, or objection, for adopting this d=
raft as a working group item by July 6th 2020.
>=20
> Could those who are willing to work on this document, please notify the l=
ist. That gives us an indication of the energy level in the working group t=
o work on this.
>=20
> As a reminder, the call for IPR has been done last November. [2]
>=20
> Thanks,
> Regards,
> Bruno, Jim, Joel
>=20
> [1] https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
> [2] https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Esz=
d3k/
>=20
>=20
> _________________________________________________________________________=
________________________________________________
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>=20
> _______________________________________________
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> spring@ietf.org
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Dear SPRING WG:

This email starts a two week WG LC for https://datatracker.ietf.org/doc/dra=
ft-ietf-spring-sr-yang/.

Substantive comments should be directed to the mailing list no later than J=
uly 7th. Editorial suggestions can be sent to the authors.

Thanks!

Jim, Joel & Bruno


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<p class=3D"MsoNormal">This email starts a two week WG LC for <a href=3D"ht=
tps://datatracker.ietf.org/doc/draft-ietf-spring-sr-yang/">
<span style=3D"color:blue">https://datatracker.ietf.org/doc/draft-ietf-spri=
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<o:p></o:p></p>
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th. Editorial suggestions can be sent to the authors.</span><o:p></o:p></p>
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<p class=3D"MsoNormal">Thanks!<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Jim, Joel &amp; Bruno<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
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Date: Tue, 23 Jun 2020 11:00:45 -0700
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: "=?utf-8?Q?spring=40ietf.org?=" <spring@ietf.org>, James Guichard <james.n.guichard@futurewei.com>
Cc: "=?utf-8?Q?spring-chairs=40ietf.org?=" <spring-chairs@ietf.org>
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Subject: Re: [spring] WG LC https://datatracker.ietf.org/doc/draft-ietf-spring-sr-yang/
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Support as co-author

Cheers,
Jeff
On Jun 23, 2020, 10:59 AM -0700, James Guichard <james.n.guichard@futurewei.com>, wrote:
> Dear SPRING WG:
>
> This email starts a two week WG LC for https://datatracker.ietf.org/doc/draft-ietf-spring-sr-yang/.
>
> Substantive comments should be directed to the mailing list no later than July 7th. Editorial suggestions can be sent to the authors.
>
> Thanks!
>
> Jim, Joel & Bruno
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring

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<div dir=3D=22auto=22>Support as co-author</div>
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<div name=3D=22messageSignatureSection=22><br />
<div class=3D=22match=46ont=22>Cheers,
<div>Jeff</div>
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<div name=3D=22messageReplySection=22>On Jun 23, 2020, 10:59 AM -0700, Ja=
mes Guichard &lt;james.n.guichard=40futurewei.com&gt;, wrote:<br />
<blockquote type=3D=22cite=22 style=3D=22border-left-color: grey; border-=
left-width: thin; border-left-style: solid; margin: 5px 5px;padding-left:=
 10px;=22>
<div class=3D=22WordSection1=22>
<p class=3D=22MsoNormal=22>Dear SPRING WG:</p>
<p class=3D=22MsoNormal=22>&=23160;</p>
<p class=3D=22MsoNormal=22>This email starts a two week WG LC for <a href=
=3D=22https://datatracker.ietf.org/doc/draft-ietf-spring-sr-yang/=22><spa=
n style=3D=22color:blue=22>https://datatracker.ietf.org/doc/draft-ietf-sp=
ring-sr-yang/</span></a>.</p>
<p class=3D=22MsoNormal=22>&=23160;</p>
<p class=3D=22MsoNormal=22><span style=3D=22color:=23212529;background:wh=
ite=22>Substantive comments should be directed to the mailing list no lat=
er than July 7th. Editorial suggestions can be sent to the authors.</span=
></p>
<p class=3D=22MsoNormal=22>&=23160;</p>
<p class=3D=22MsoNormal=22>Thanks=21</p>
<p class=3D=22MsoNormal=22>&=23160;</p>
<p class=3D=22MsoNormal=22>Jim, Joel &amp; Bruno</p>
<p class=3D=22MsoNormal=22>&=23160;</p>
</div>
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
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spring=40ietf.org<br />
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From: Ron Bonica <rbonica@juniper.net>
To: Gyan Mishra <hayabusagsm@gmail.com>, SPRING WG <spring@ietf.org>
Thread-Topic: [spring] Spring SR question??
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Subject: Re: [spring] Spring SR question??
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Gyan,

You can signal SR-MPLS over a network that has IPv6 enabled, but does not h=
ave IPv4 enabled.

                                                   Ron




Juniper Business Use Only
From: spring <spring-bounces@ietf.org> On Behalf Of Gyan Mishra
Sent: Tuesday, June 23, 2020 1:20 PM
To: SPRING WG <spring@ietf.org>
Subject: [spring] Spring SR question??

[External Email. Be cautious of content]


All

SR-MPLS utilizes IPv4 data plane and and can service v4 v6 edges  6to4 soft=
wire mesh framework from the VPN overlay aspect.

Can SR-MPLS use IPV6 data plane?

Reason why I am asking is that it is very simple to get from LDPv4 core to =
SR-MPLS core.

However if you have an existing brown field SP core and your end goal is to=
 get to SRv6 - how can you easily get there.

So my thoughts are you can use SR-MPLS as a stepping stone so to speak to g=
et to SRv6.

To that end you could use Greg Mirsky draft of tunneling SR-MPLS in SRV6 in=
teroperability and use other inter operability drafts.

But let's say you prefer to get from point A go point B seamlessly and nati=
ve naturally without any translation.

An analogy would be migratory to IPV6 instead of using translation technolo=
gy tunnels you dual stand the entire network and use ds-lite or LSN or 6RD =
to close the gap.

So my thoughts on getting to the "end state" SRv6 are we follows:

MPLS LDPv4

MPLS LDPv6

SR-MPLS v6

Once you have a v6 core and you have decommissioned LDPv6 you now have the =
v6 data plan ready to go to get to SRv6

SRv6

Only caveat with this idea is I am not sure if SR-MPLS supports IPv6 data p=
lane v6 label binding.


Kind Regards

Gyan

--

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Gyan Mishra

Network Solutions Architect

M 301 502-1347
13101 Columbia Pike
Silver Spring, MD


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<p class=3D"MsoNormal">Gyan,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">You can signal SR-MPLS over a network that has IPv6 =
enabled, but does not have IPv4 enabled.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp; Ron<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> spring &lt;spring-bounces@ietf.org&gt; =
<b>On Behalf Of
</b>Gyan Mishra<br>
<b>Sent:</b> Tuesday, June 23, 2020 1:20 PM<br>
<b>To:</b> SPRING WG &lt;spring@ietf.org&gt;<br>
<b>Subject:</b> [spring] Spring SR question??<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b><=
span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;colo=
r:black">[External Email. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">All<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">SR-MPLS utilizes IPv4 data plane and and can service=
 v4 v6 edges &nbsp;6to4 softwire mesh framework from the VPN overlay aspect=
.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Can SR-MPLS use IPV6 data plane?<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Reason why I am asking is that it is very simple to =
get from LDPv4 core to SR-MPLS core.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">However if you have an existing brown field SP core =
and your end goal is to get to SRv6 - how can you easily get there.<o:p></o=
:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">So my thoughts are you can use SR-MPLS as a stepping=
 stone so to speak to get to SRv6.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">To that end you could use Greg Mirsky draft of tunne=
ling SR-MPLS in SRV6 interoperability and use other inter operability draft=
s. &nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">But let&#8217;s say you prefer to get from point A g=
o point B seamlessly and native naturally without any translation.<o:p></o:=
p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">An analogy would be migratory to IPV6 instead of usi=
ng translation technology tunnels you dual stand the entire network and use=
 ds-lite or LSN or 6RD to close the gap.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">So my thoughts on getting to the &#8220;end state&#8=
221; SRv6 are we follows:<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">MPLS LDPv4&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">MPLS LDPv6&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">SR-MPLS v6&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Once you have a v6 core and you have decommissioned =
LDPv6 you now have the v6 data plan ready to go to get to SRv6<o:p></o:p></=
p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">SRv6<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Only caveat with this idea is I am not sure if SR-MP=
LS supports IPv6 data plane v6 label binding.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Kind Regards&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Gyan<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<p class=3D"MsoNormal">-- <o:p></o:p></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<p><a href=3D"https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yM=
aO-gk!Q4s7bsLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz45wy2DnuOsEl42h$" ta=
rget=3D"_blank"><span style=3D"color:#1155CC;text-decoration:none"><img bor=
der=3D"0" width=3D"81" height=3D"18" style=3D"width:.8437in;height:.1875in"=
 id=3D"_x0000_i1025" src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz-=
logo-email"></span></a><span style=3D"color:#222222"><o:p></o:p></span></p>
<p style=3D"margin:0in;margin-bottom:.0001pt;mso-line-height-alt:9.75pt"><b=
><span style=3D"font-family:&quot;Arial&quot;,sans-serif;color:black">Gyan =
Mishra</span></b><span style=3D"font-family:&quot;Arial&quot;,sans-serif;co=
lor:black"><o:p></o:p></span></p>
<p style=3D"margin:0in;margin-bottom:.0001pt;mso-line-height-alt:9.75pt"><i=
><span style=3D"font-family:&quot;Georgia&quot;,serif;color:black">Network =
Solutions Architect&nbsp;</span></i><span style=3D"color:#222222"><o:p></o:=
p></span></p>
<p style=3D"margin:0in;margin-bottom:.0001pt;mso-line-height-alt:9.75pt"><i=
><span style=3D"font-family:&quot;Georgia&quot;,serif;color:black">M 301 50=
2-1347<br>
13101 Columbia Pike&nbsp;<br>
</span></i><span style=3D"color:black">Silver Spring, MD<o:p></o:p></span><=
/p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>

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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Tue, 23 Jun 2020 16:52:14 -0400
Message-ID: <CABNhwV2gqcuTU57r8SE0nAM6+FgdFo3vRi4AiyESrc71ab0dgg@mail.gmail.com>
To: Ron Bonica <rbonica@juniper.net>
Cc: SPRING WG <spring@ietf.org>
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Subject: Re: [spring] Spring SR question??
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Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Thanks Ron!

Gyan

On Tue, Jun 23, 2020 at 3:51 PM Ron Bonica <rbonica@juniper.net> wrote:

> Gyan,
>
>
>
> You can signal SR-MPLS over a network that has IPv6 enabled, but does not
> have IPv4 enabled.
>
>
>
>                                                    Ron
>
>
>
>
>
>
>
> Juniper Business Use Only
>
> *From:* spring <spring-bounces@ietf.org> *On Behalf Of *Gyan Mishra
> *Sent:* Tuesday, June 23, 2020 1:20 PM
> *To:* SPRING WG <spring@ietf.org>
> *Subject:* [spring] Spring SR question??
>
>
>
> *[External Email. Be cautious of content]*
>
>
>
>
>
> All
>
>
>
> SR-MPLS utilizes IPv4 data plane and and can service v4 v6 edges  6to4
> softwire mesh framework from the VPN overlay aspect.
>
>
>
> Can SR-MPLS use IPV6 data plane?
>
>
>
> Reason why I am asking is that it is very simple to get from LDPv4 core t=
o
> SR-MPLS core.
>
>
>
> However if you have an existing brown field SP core and your end goal is
> to get to SRv6 - how can you easily get there.
>
>
>
> So my thoughts are you can use SR-MPLS as a stepping stone so to speak to
> get to SRv6.
>
>
>
> To that end you could use Greg Mirsky draft of tunneling SR-MPLS in SRV6
> interoperability and use other inter operability drafts.
>
>
>
> But let=E2=80=99s say you prefer to get from point A go point B seamlessl=
y and
> native naturally without any translation.
>
>
>
> An analogy would be migratory to IPV6 instead of using translation
> technology tunnels you dual stand the entire network and use ds-lite or L=
SN
> or 6RD to close the gap.
>
>
>
> So my thoughts on getting to the =E2=80=9Cend state=E2=80=9D SRv6 are we =
follows:
>
>
>
> MPLS LDPv4
>
>
>
> MPLS LDPv6
>
>
>
> SR-MPLS v6
>
>
>
> Once you have a v6 core and you have decommissioned LDPv6 you now have th=
e
> v6 data plan ready to go to get to SRv6
>
>
>
> SRv6
>
>
>
> Only caveat with this idea is I am not sure if SR-MPLS supports IPv6 data
> plane v6 label binding.
>
>
>
>
>
> Kind Regards
>
>
>
> Gyan
>
>
>
> --
>
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
>
>
> <https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yMaO-gk!Q4s7b=
sLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz45wy2DnuOsEl42h$>
>
> *Gyan Mishra*
>
> *Network Solutions Architect *
>
>
>
> *M 301 502-1347 13101 Columbia Pike
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
> *Silver Spring, MD
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
>
>
>
--=20

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--000000000000648e3a05a8c6898c
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div><br></div><div dir=3D"auto"><br></div><div dir=3D"auto">Thanks Ron!</d=
iv><div dir=3D"auto"><br></div><div dir=3D"auto">Gyan</div><div dir=3D"auto=
"><br></div><div><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail=
_attr">On Tue, Jun 23, 2020 at 3:51 PM Ron Bonica &lt;<a href=3D"mailto:rbo=
nica@juniper.net">rbonica@juniper.net</a>&gt; wrote:<br></div><blockquote c=
lass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;=
padding-left:1ex">





<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"m_4982824257615022543WordSection1">
<p class=3D"MsoNormal">Gyan,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">You can signal SR-MPLS over a network that has IPv6 =
enabled, but does not have IPv4 enabled.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 Ron<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"m_4982824257615022543msipfooter30b3d538" align=3D"center" style=
=3D"margin:0in;margin-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><u></u><u></u></p>
<div>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bou=
nces@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt; <b>On Beha=
lf Of
</b>Gyan Mishra<br>
<b>Sent:</b> Tuesday, June 23, 2020 1:20 PM<br>
<b>To:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> [spring] Spring SR question??<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#ffeb9c"><b><=
span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;colo=
r:black">[External Email. Be cautious of content]<u></u><u></u></span></b><=
/p></div></div><div lang=3D"EN-US" link=3D"blue" vlink=3D"purple"><div clas=
s=3D"m_4982824257615022543WordSection1">
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">All<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SR-MPLS utilizes IPv4 data plane and and can service=
 v4 v6 edges =C2=A06to4 softwire mesh framework from the VPN overlay aspect=
.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Can SR-MPLS use IPV6 data plane?<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Reason why I am asking is that it is very simple to =
get from LDPv4 core to SR-MPLS core.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">However if you have an existing brown field SP core =
and your end goal is to get to SRv6 - how can you easily get there.<u></u><=
u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">So my thoughts are you can use SR-MPLS as a stepping=
 stone so to speak to get to SRv6.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">To that end you could use Greg Mirsky draft of tunne=
ling SR-MPLS in SRV6 interoperability and use other inter operability draft=
s. =C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">But let=E2=80=99s say you prefer to get from point A=
 go point B seamlessly and native naturally without any translation.<u></u>=
<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">An analogy would be migratory to IPV6 instead of usi=
ng translation technology tunnels you dual stand the entire network and use=
 ds-lite or LSN or 6RD to close the gap.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">So my thoughts on getting to the =E2=80=9Cend state=
=E2=80=9D SRv6 are we follows:<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">MPLS LDPv4=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">MPLS LDPv6=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SR-MPLS v6=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Once you have a v6 core and you have decommissioned =
LDPv6 you now have the v6 data plan ready to go to get to SRv6<u></u><u></u=
></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SRv6<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Only caveat with this idea is I am not sure if SR-MP=
LS supports IPv6 data plane v6 label binding.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Kind Regards=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Gyan<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<p class=3D"MsoNormal">-- <u></u><u></u></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div><a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%=
0A+Silver+Spring,+MD?entry=3Dgmail&amp;source=3Dg">
</a><div>
<div>
<p><a href=3D"https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yM=
aO-gk!Q4s7bsLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz45wy2DnuOsEl42h$" ta=
rget=3D"_blank"><span style=3D"color:#1155cc;text-decoration:none"><img bor=
der=3D"0" width=3D"81" height=3D"18" style=3D"width:.8437in;height:.1875in"=
 id=3D"m_4982824257615022543_x0000_i1025" src=3D"http://ss7.vzw.com/is/imag=
e/VerizonWireless/vz-logo-email"></span></a><span style=3D"color:#222222"><=
u></u><u></u></span></p>
<p style=3D"margin:0in;margin-bottom:.0001pt"><b><span style=3D"font-family=
:&quot;Arial&quot;,sans-serif;color:black">Gyan Mishra</span></b><span styl=
e=3D"font-family:&quot;Arial&quot;,sans-serif;color:black"><u></u><u></u></=
span></p>
<p style=3D"margin:0in;margin-bottom:.0001pt"><i><span style=3D"font-family=
:&quot;Georgia&quot;,serif;color:black">Network Solutions Architect=C2=A0</=
span></i><span style=3D"color:#222222"><u></u><u></u></span></p>
<p style=3D"margin:0in;margin-bottom:.0001pt"><i><span style=3D"font-family=
:&quot;Georgia&quot;,serif;color:black">M 301 502-1347<br>
<a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Si=
lver+Spring,+MD?entry=3Dgmail&amp;source=3Dg">13101 Columbia Pike</a>=C2=A0=
<br>
</span></i><span style=3D"color:black"><a href=3D"https://www.google.com/ma=
ps/search/13101+Columbia+Pike+%0D%0A+Silver+Spring,+MD?entry=3Dgmail&amp;so=
urce=3Dg">Silver Spring, MD</a><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>

</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"l=
tr"><div><p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com=
/" style=3D"color:rgb(17,85,204);padding-bottom:1em;display:inline-block" t=
arget=3D"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz=
-logo-email" width=3D"81" height=3D"18" style=3D"height:18px;width:81px"></=
a><br></p><p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NH=
G DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b=
></p><p style=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font fac=
e=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutio=
ns A</i></font><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=
=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px;line-height:13px;=
color:black"><i><font face=3D"georgia, serif">M 301 502-1347<br>13101 Colum=
bia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div></di=
v></div></div></div></div></div></div></div>

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Date: Tue, 23 Jun 2020 16:29:57 -0700
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: Ron Bonica <rbonica@juniper.net>, Gyan Mishra <hayabusagsm@gmail.com>
Cc: SPRING WG <spring@ietf.org>
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Subject: Re: [spring] Spring SR question??
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--5ef2907a_29b0e9a8_178
Content-Type: text/plain; charset="utf-8"
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Gyan,

In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)
If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, then =
data-plane is that of outer encapsulation - rfc8663 as the best example, =
e.g outer header would be IPv4/IPv6+UDP
Since bindings (SIDs) need to be distributed, you=E2=80=99d need a label =
distribution protocol, with IPv6 that would be IS-IS, OSP=46v3 or BGP (or=
=C2=A0=C2=A0controller based).
Vendor support for that is rather limited, I don=E2=80=99t recall any.
Other option to distribute label bindings over IPv6 would be LDPv6 + v6 I=
GP, I recall Junos implementation, there could be more.
There=E2=80=99s quite interesting discussion on NANOG - https://mailman.n=
anog.org/pipermail/nanog/2020-June/208111.html

Hope this helps

Cheers,
Jeff
On Jun 23, 2020, 1:52 PM -0700, Gyan Mishra <hayabusagsm=40gmail.com>, wr=
ote:
>
>
> Thanks Ron=21
>
> Gyan
>
> > On Tue, Jun 23, 2020 at 3:51 PM Ron Bonica <rbonica=40juniper.net> wr=
ote:
> > > Gyan,
> > >
> > > You can signal SR-MPLS over a network that has IPv6 enabled, but do=
es not have IPv4 enabled.
> > >
> > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0 Ron
> > >
> > >
> > >
> > > Juniper Business Use Only
> > > =46rom: spring <spring-bounces=40ietf.org> On Behalf Of Gyan Mishra=

> > > Sent: Tuesday, June 23, 2020 1:20 PM
> > > To: SPRING WG <spring=40ietf.org>
> > > Subject: =5Bspring=5D Spring SR question=3F=3F
> > >
> > > =5BExternal Email. Be cautious of content=5D
> > >
> > >
> > > All
> > >
> > > SR-MPLS utilizes IPv4 data plane and and can service v4 v6 edges =C2=
=A06to4 softwire mesh framework from the VPN overlay aspect..
> > >
> > > Can SR-MPLS use IPV6 data plane=3F
> > >
> > > Reason why I am asking is that it is very simple to get from LDPv4 =
core to SR-MPLS core.
> > >
> > > However if you have an existing brown field SP core and your end go=
al is to get to SRv6 - how can you easily get there.
> > >
> > > So my thoughts are you can use SR-MPLS as a stepping stone so to sp=
eak to get to SRv6.
> > >
> > > To that end you could use Greg Mirsky draft of tunneling SR-MPLS in=
 SRV6 interoperability and use other inter operability drafts.
> > >
> > > But let=E2=80=99s say you prefer to get from point A go point B sea=
mlessly and native naturally without any translation.
> > >
> > > An analogy would be migratory to IPV6 instead of using translation =
technology tunnels you dual stand the entire network and use ds-lite or L=
SN or 6RD to close the gap.
> > >
> > > So my thoughts on getting to the =E2=80=9Cend state=E2=80=9D SRv6 a=
re we follows:
> > >
> > > MPLS LDPv4
> > >
> > > MPLS LDPv6
> > >
> > > SR-MPLS v6
> > >
> > > Once you have a v6 core and you have decommissioned LDPv6 you now h=
ave the v6 data plan ready to go to get to SRv6
> > >
> > > SRv6
> > >
> > > Only caveat with this idea is I am not sure if SR-MPLS supports IPv=
6 data plane v6 label binding.
> > >
> > >
> > > Kind Regards
> > >
> > > Gyan
> > >
> > > --
> > > Gyan Mishra
> > > Network Solutions Architect
> > > M 301 502-1347
> > > 13101 Columbia Pike
> > > Silver Spring, MD
> > >
> --
>
> Gyan Mishra
> Network Solutions Architect
> M 301 502-1347
> 13101 Columbia Pike
> Silver Spring, MD
>
> =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F
> spring mailing list
> spring=40ietf.org
> https://www.ietf.org/mailman/listinfo/spring

--5ef2907a_29b0e9a8_178
Content-Type: text/html; charset="utf-8"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline

<html xmlns=3D=22http://www.w3.org/1999/xhtml=22>
<head>
<title></title>
</head>
<body>
<div name=3D=22messageBodySection=22>
<div dir=3D=22auto=22>Gyan,<br />
<br />
In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)&=23=
160;<br />
If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, then =
data-plane is that of outer encapsulation - rfc8663 as the best example, =
e.g outer header would be IPv4/IPv6+UDP<br />
Since bindings (SIDs) need to be distributed, you=E2=80=99d need a label =
distribution protocol, with IPv6 that would be IS-IS, OSP=46v3 or BGP (or=
&=23160;&=23160;controller based).<br />
Vendor support for that is rather limited, I don=E2=80=99t recall any.<br=
 />
Other option to distribute label bindings over IPv6 would be LDPv6 + v6 I=
GP, I recall Junos implementation, there could be more.<br />
There=E2=80=99s quite interesting discussion on NANOG - https://mailman.n=
anog.org/pipermail/nanog/2020-June/208111.html<br />
&=23160;<br />
Hope this helps</div>
</div>
<div name=3D=22messageSignatureSection=22><br />
<div class=3D=22match=46ont=22>Cheers,
<div>Jeff</div>
</div>
</div>
<div name=3D=22messageReplySection=22>On Jun 23, 2020, 1:52 PM -0700, Gya=
n Mishra &lt;hayabusagsm=40gmail.com&gt;, wrote:<br />
<blockquote type=3D=22cite=22 style=3D=22border-left-color: grey; border-=
left-width: thin; border-left-style: solid; margin: 5px 5px;padding-left:=
 10px;=22>
<div><br /></div>
<div dir=3D=22auto=22><br /></div>
<div dir=3D=22auto=22>Thanks Ron=21</div>
<div dir=3D=22auto=22><br /></div>
<div dir=3D=22auto=22>Gyan</div>
<div dir=3D=22auto=22><br /></div>
<div>
<div class=3D=22gmail=5Fquote=22>
<div dir=3D=22ltr=22 class=3D=22gmail=5Fattr=22>On Tue, Jun 23, 2020 at 3=
:51 PM Ron Bonica &lt;<a href=3D=22mailto:rbonica=40juniper.net=22>rbonic=
a=40juniper.net</a>&gt; wrote:<br /></div>
<blockquote class=3D=22gmail=5Fquote=22 style=3D=22margin:0 0 0 .8ex;bord=
er-left:1px =23ccc solid;padding-left:1ex=22>
<div lang=3D=22EN-US=22 link=3D=22blue=22 vlink=3D=22purple=22 xml:lang=3D=
=22EN-US=22>
<div class=3D=22m=5F4982824257615022543WordSection1=22>
<p class=3D=22MsoNormal=22>Gyan,<u></u><u></u></p>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
<p class=3D=22MsoNormal=22>You can signal SR-MPLS over a network that has=
 IPv6 enabled, but does not have IPv4 enabled.<u></u><u></u></p>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
<p class=3D=22MsoNormal=22>&=23160;&=23160;&=23160;&=23160;&=23160;&=2316=
0;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160=
;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;=
&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=
=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23=
160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160;&=23160; Ron<u></u><u=
></u></p>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
<p class=3D=22m=5F4982824257615022543msipfooter30b3d538=22 align=3D=22cen=
ter=22 style=3D=22margin:0in;margin-bottom:.0001pt;text-align:center=22><=
span style=3D=22font-size:7.0pt;color:black=22>Juniper Business Use Only<=
/span><u></u><u></u></p>
<div>
<div style=3D=22border:none;border-top:solid =23e1e1e1 1.0pt;padding:3.0p=
t 0in 0in 0in=22>
<p class=3D=22MsoNormal=22><b>=46rom:</b> spring &lt;<a href=3D=22mailto:=
spring-bounces=40ietf.org=22 target=3D=22=5Fblank=22>spring-bounces=40iet=
f.org</a>&gt; <b>On Behalf Of</b> Gyan Mishra<br />
<b>Sent:</b> Tuesday, June 23, 2020 1:20 PM<br />
<b>To:</b> SPRING WG &lt;<a href=3D=22mailto:spring=40ietf.org=22 target=3D=
=22=5Fblank=22>spring=40ietf.org</a>&gt;<br />
<b>Subject:</b> =5Bspring=5D Spring SR question=3F=3F<u></u><u></u></p>
</div>
</div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
<p class=3D=22MsoNormal=22 style=3D=22line-height:12.0pt;background:=23ff=
eb9c=22><b><span style=3D=22font-size:10.5pt;font-family:&quot;Lato&quot;=
,sans-serif;color:black=22>=5BExternal Email. Be cautious of content=5D<u=
></u><u></u></span></b></p>
</div>
</div>
<div lang=3D=22EN-US=22 link=3D=22blue=22 vlink=3D=22purple=22 xml:lang=3D=
=22EN-US=22>
<div class=3D=22m=5F4982824257615022543WordSection1=22>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
<div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>All<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>SR-MPLS utilizes IPv4 data plane and and can s=
ervice v4 v6 edges &=23160;6to4 softwire mesh framework from the VPN over=
lay aspect..<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>Can SR-MPLS use IPV6 data plane=3F<u></u><u></=
u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>Reason why I am asking is that it is very simp=
le to get from LDPv4 core to SR-MPLS core.<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>However if you have an existing brown field SP=
 core and your end goal is to get to SRv6 - how can you easily get there.=
<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>So my thoughts are you can use SR-MPLS as a st=
epping stone so to speak to get to SRv6.<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>To that end you could use Greg Mirsky draft of=
 tunneling SR-MPLS in SRV6 interoperability and use other inter operabili=
ty drafts. &=23160;<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>But let=E2=80=99s say you prefer to get from p=
oint A go point B seamlessly and native naturally without any translation=
.<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>An analogy would be migratory to IPV6 instead =
of using translation technology tunnels you dual stand the entire network=
 and use ds-lite or LSN or 6RD to close the gap.<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>So my thoughts on getting to the =E2=80=9Cend =
state=E2=80=9D SRv6 are we follows:<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>MPLS LDPv4&=23160;<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>MPLS LDPv6&=23160;<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>SR-MPLS v6&=23160;<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>Once you have a v6 core and you have decommiss=
ioned LDPv6 you now have the v6 data plan ready to go to get to SRv6<u></=
u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>SRv6<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>Only caveat with this idea is I am not sure if=
 SR-MPLS supports IPv6 data plane v6 label binding.<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>Kind Regards&=23160;<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22>Gyan<u></u><u></u></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
<p class=3D=22MsoNormal=22>-- <u></u><u></u></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div><a href=3D=22https://www.google.com/maps/search/13101+Columbia+Pike+=
%0D%0A+Silver+Spring,+MD=3Fentry=3Dgmail&amp;source=3Dg=22></a>
<div>
<div>
<p><a href=3D=22https://urldefense.com/v3/=5F=5Fhttp:/www.verizon.com/=5F=
=5F;=21=21NEt6yMaO-gk=21Q4s7bsLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz=
45wy2DnuOsEl42h=24=22 target=3D=22=5Fblank=22><span style=3D=22color:=231=
155cc;text-decoration:none=22><img border=3D=220=22 width=3D=2281=22 heig=
ht=3D=2218=22 style=3D=22width:.8437in;height:.1875in=22 id=3D=22m=5F4982=
824257615022543=5Fx0000=5Fi1025=22 src=3D=22http://ss7.vzw.com/is/image/V=
erizonWireless/vz-logo-email=22 /></span></a><span style=3D=22color:=2322=
2222=22><u></u><u></u></span></p>
<p style=3D=22margin:0in;margin-bottom:.0001pt=22><b><span style=3D=22fon=
t-family:&quot;Arial&quot;,sans-serif;color:black=22>Gyan Mishra</span></=
b><span style=3D=22font-family:&quot;Arial&quot;,sans-serif;color:black=22=
><u></u><u></u></span></p>
<p style=3D=22margin:0in;margin-bottom:.0001pt=22><i><span style=3D=22fon=
t-family:&quot;Georgia&quot;,serif;color:black=22>Network Solutions Archi=
tect&=23160;</span></i><span style=3D=22color:=23222222=22><u></u><u></u>=
</span></p>
<p style=3D=22margin:0in;margin-bottom:.0001pt=22><i><span style=3D=22fon=
t-family:&quot;Georgia&quot;,serif;color:black=22>M 301 502-1347<br />
<a href=3D=22https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0=
A+Silver+Spring,+MD=3Fentry=3Dgmail&amp;source=3Dg=22>13101 Columbia Pike=
</a>&=23160;<br /></span></i> <span style=3D=22color:black=22><a href=3D=22=
https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spri=
ng,+MD=3Fentry=3Dgmail&amp;source=3Dg=22>Silver Spring, MD</a><u></u><u><=
/u></span></p>
</div>
<div>
<p class=3D=22MsoNormal=22><u></u>&=23160;<u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
--<br />
<div dir=3D=22ltr=22 class=3D=22gmail=5Fsignature=22 data-smartmail=3D=22=
gmail=5Fsignature=22>
<div dir=3D=22ltr=22>
<div dir=3D=22ltr=22>
<div dir=3D=22ltr=22>
<div dir=3D=22ltr=22>
<div dir=3D=22ltr=22>
<div dir=3D=22ltr=22>
<div dir=3D=22ltr=22>
<div>
<p style=3D=22color:rgb(34,34,34)=22><a href=3D=22http://www.verizon.com/=
=22 style=3D=22color:rgb(17,85,204);padding-bottom:1em;display:inline-blo=
ck=22 target=3D=22=5Fblank=22><img src=3D=22http://ss7.vzw.com/is/image/V=
erizonWireless/vz-logo-email=22 width=3D=2281=22 height=3D=2218=22 style=3D=
=22height:18px;width:81px=22 /></a><br /></p>
<p style=3D=22font-size:1em;margin:0px;font-family:&quot;Verizon NHG DS&q=
uot;,Arial,sans-serif;line-height:13px;color:black=22><b>Gyan Mishra</b><=
/p>
<p style=3D=22color:rgb(34,34,34);margin:0px;line-height:13px=22><font fa=
ce=3D=22georgia, serif=22 style=3D=22color:black;font-size:1em=22><i>Netw=
ork Solutions A</i></font><font color=3D=22=23000000=22 face=3D=22georgia=
, serif=22><i>rchitect&=23160;</i></font></p>
<p style=3D=22font-size:1em;margin:0px;line-height:13px;color:black=22><i=
><font face=3D=22georgia, serif=22>M 301 502-1347<br />
13101 Columbia Pike&=23160;<br /></font></i>Silver Spring, MD</p>
</div>
<div><br /></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F<br />
spring mailing list<br />
spring=40ietf.org<br />
https://www.ietf.org/mailman/listinfo/spring<br /></blockquote>
</div>
</body>
</html>

--5ef2907a_29b0e9a8_178--


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From: Lizhenbin <lizhenbin@huawei.com>
To: "spring@ietf.org" <spring@ietf.org>, James Guichard <james.n.guichard@futurewei.com>
CC: "spring-chairs@ietf.org" <spring-chairs@ietf.org>
Thread-Topic: [spring] WG LC https://datatracker.ietf.org/doc/draft-ietf-spring-sr-yang/
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<p>support.</p>
<p>&nbsp;</p>
<p>Best Regards,</p>
<p>Zhenbin (Robin)</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>Dear SPRING WG:</p>
<div style=3D"FONT-SIZE: 16px; FONT-FAMILY: Times New Roman; COLOR: #000000=
">
<div>
<div name=3D"messageReplySection">
<blockquote style=3D"PADDING-LEFT: 10px; BORDER-LEFT: grey thin solid; MARG=
IN: 5px" type=3D"cite">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">&nbsp;</p>
<p class=3D"MsoNormal">This email starts a two week WG LC for <a href=3D"ht=
tps://datatracker.ietf.org/doc/draft-ietf-spring-sr-yang/" rel=3D"noopener =
noreferrer" target=3D"_blank">
<span style=3D"COLOR: blue">https://datatracker.ietf.org/doc/draft-ietf-spr=
ing-sr-yang/</span></a>.</p>
<p class=3D"MsoNormal">&nbsp;</p>
<p class=3D"MsoNormal"><span style=3D"BACKGROUND: white; COLOR: #212529">Su=
bstantive comments should be directed to the mailing list no later than Jul=
y 7th. Editorial suggestions can be sent to the authors.</span></p>
<p class=3D"MsoNormal">&nbsp;</p>
<p class=3D"MsoNormal">Thanks!</p>
<p class=3D"MsoNormal">&nbsp;</p>
<p class=3D"MsoNormal">Jim, Joel &amp; Bruno</p>
<p class=3D"MsoNormal">&nbsp;</p>
</div>
_______________________________________________<br>
spring mailing list<br>
spring@ietf.org<br>
https://www.ietf.org/mailman/listinfo/spring<br>
</blockquote>
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From: Zhuangshunwan <zhuangshunwan@huawei.com>
To: James Guichard <james.n.guichard@futurewei.com>, "spring@ietf.org" <spring@ietf.org>
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Support.



Best Regards,

Shunwan

From: spring [mailto:spring-bounces@ietf.org] On Behalf Of James Guichard
Sent: Wednesday, June 24, 2020 1:59 AM
To: spring@ietf.org
Cc: spring-chairs@ietf.org
Subject: [spring] WG LC https://datatracker.ietf.org/doc/draft-ietf-spring-=
sr-yang/

Dear SPRING WG:

This email starts a two week WG LC for https://datatracker.ietf.org/doc/dra=
ft-ietf-spring-sr-yang/.

Substantive comments should be directed to the mailing list no later than J=
uly 7th. Editorial suggestions can be sent to the authors.

Thanks!

Jim, Joel & Bruno


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<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&=
quot;,sans-serif;color:black">Support.<o:p></o:p></span></p>
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&=
quot;,sans-serif;color:black">&nbsp;<o:p></o:p></span></p>
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&=
quot;,sans-serif;color:black">Best Regards,<o:p></o:p></span></p>
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&=
quot;,sans-serif;color:black">Shunwan</span><span lang=3D"EN-US" style=3D"f=
ont-size:10.5pt;font-family:&quot;Calibri&quot;,sans-serif;color:#1F497D"><=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
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<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> spring [mailto:spring-bounces@ietf.org]
<b>On Behalf Of </b>James Guichard<br>
<b>Sent:</b> Wednesday, June 24, 2020 1:59 AM<br>
<b>To:</b> spring@ietf.org<br>
<b>Cc:</b> spring-chairs@ietf.org<br>
<b>Subject:</b> [spring] WG LC https://datatracker.ietf.org/doc/draft-ietf-=
spring-sr-yang/<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Dear SPRING WG:<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">This email starts a two week WG=
 LC for <a href=3D"https://datatracker.ietf.org/doc/draft-ietf-spring-sr-ya=
ng/">
<span style=3D"color:blue">https://datatracker.ietf.org/doc/draft-ietf-spri=
ng-sr-yang/</span></a>.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#212529;backgrou=
nd:white">Substantive comments should be directed to the mailing list no la=
ter than July 7th. Editorial suggestions can be sent to the authors.</span>=
<span lang=3D"EN-US"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Thanks!<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Jim, Joel &amp; Bruno<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
</div>
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From: Ron Bonica <rbonica@juniper.net>
To: Jeff Tantsura <jefftant.ietf@gmail.com>, Gyan Mishra <hayabusagsm@gmail.com>
CC: SPRING WG <spring@ietf.org>
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Subject: Re: [spring] Spring SR question??
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Jeff,

I'm not sure that is what Gyan was asking. He can clarify.

I think Gyan was asking about an environment where:


  *   SR-MPLS runs directly over ethernet. SR-MPLS is not encapsulated in I=
P or UDP over IP
  *   The SR-MPLS signaling protocol (IS-IS or OSPFv3) does not required IP=
v4 to be enabled on the network.

                                                                       Ron




Juniper Business Use Only
From: Jeff Tantsura <jefftant.ietf@gmail.com>
Sent: Tuesday, June 23, 2020 7:30 PM
To: Ron Bonica <rbonica@juniper.net>; Gyan Mishra <hayabusagsm@gmail.com>
Cc: SPRING WG <spring@ietf.org>
Subject: Re: [spring] Spring SR question??

[External Email. Be cautious of content]

Gyan,

In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)
If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, then da=
ta-plane is that of outer encapsulation - rfc8663 as the best example, e.g =
outer header would be IPv4/IPv6+UDP
Since bindings (SIDs) need to be distributed, you'd need a label distributi=
on protocol, with IPv6 that would be IS-IS, OSPFv3 or BGP (or  controller b=
ased).
Vendor support for that is rather limited, I don't recall any.
Other option to distribute label bindings over IPv6 would be LDPv6 + v6 IGP=
, I recall Junos implementation, there could be more.
There's quite interesting discussion on NANOG - https://mailman.nanog.org/p=
ipermail/nanog/2020-June/208111.html

Hope this helps

Cheers,
Jeff
On Jun 23, 2020, 1:52 PM -0700, Gyan Mishra <hayabusagsm@gmail.com<mailto:h=
ayabusagsm@gmail.com>>, wrote:


Thanks Ron!

Gyan

On Tue, Jun 23, 2020 at 3:51 PM Ron Bonica <rbonica@juniper.net<mailto:rbon=
ica@juniper.net>> wrote:
Gyan,

You can signal SR-MPLS over a network that has IPv6 enabled, but does not h=
ave IPv4 enabled.

                                                   Ron




Juniper Business Use Only
From: spring <spring-bounces@ietf.org<mailto:spring-bounces@ietf.org>> On B=
ehalf Of Gyan Mishra
Sent: Tuesday, June 23, 2020 1:20 PM
To: SPRING WG <spring@ietf.org<mailto:spring@ietf.org>>
Subject: [spring] Spring SR question??

[External Email. Be cautious of content]


All

SR-MPLS utilizes IPv4 data plane and and can service v4 v6 edges  6to4 soft=
wire mesh framework from the VPN overlay aspect..

Can SR-MPLS use IPV6 data plane?

Reason why I am asking is that it is very simple to get from LDPv4 core to =
SR-MPLS core.

However if you have an existing brown field SP core and your end goal is to=
 get to SRv6 - how can you easily get there.

So my thoughts are you can use SR-MPLS as a stepping stone so to speak to g=
et to SRv6.

To that end you could use Greg Mirsky draft of tunneling SR-MPLS in SRV6 in=
teroperability and use other inter operability drafts.

But let's say you prefer to get from point A go point B seamlessly and nati=
ve naturally without any translation.

An analogy would be migratory to IPV6 instead of using translation technolo=
gy tunnels you dual stand the entire network and use ds-lite or LSN or 6RD =
to close the gap.

So my thoughts on getting to the "end state" SRv6 are we follows:

MPLS LDPv4

MPLS LDPv6

SR-MPLS v6

Once you have a v6 core and you have decommissioned LDPv6 you now have the =
v6 data plan ready to go to get to SRv6

SRv6

Only caveat with this idea is I am not sure if SR-MPLS supports IPv6 data p=
lane v6 label binding.


Kind Regards

Gyan

--

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Gyan Mishra

Network Solutions Architect

M 301 502-1347
13101 Columbia Pike<https://urldefense.com/v3/__https:/www.google.com/maps/=
search/13101*Columbia*Pike**A0D*0A*Silver*Spring,*MD?entry=3Dgmail&source=
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XVzPc_t4OTWIy4o8f$>

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[http://ss7.vzw.com/is/image/VerizonWireless/vz-logo-email]<https://urldefe=
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YfYGIoIdLPnbcZXH6p4R9FplXVzPc_t4OTV_RjKzI$>

Gyan Mishra

Network Solutions Architect

M 301 502-1347
13101 Columbia Pike
Silver Spring, MD

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<div class=3D"WordSection1">
<p class=3D"MsoNormal">Jeff,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I&#8217;m not sure that is what Gyan was asking. He =
can clarify.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I think Gyan was asking about an environment where:<=
o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l0 level1 =
lfo3">SR-MPLS runs directly over ethernet. SR-MPLS is not encapsulated in I=
P or UDP over IP<o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"mar=
gin-left:0in;mso-list:l0 level1 lfo3">The SR-MPLS signaling protocol (IS-IS=
 or OSPFv3) does not required IPv4 to be enabled on the network.<o:p></o:p>=
</li></ul>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron<o:=
p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> Jeff Tantsura &lt;jefftant.ietf@gmail.c=
om&gt; <br>
<b>Sent:</b> Tuesday, June 23, 2020 7:30 PM<br>
<b>To:</b> Ron Bonica &lt;rbonica@juniper.net&gt;; Gyan Mishra &lt;hayabusa=
gsm@gmail.com&gt;<br>
<b>Cc:</b> SPRING WG &lt;spring@ietf.org&gt;<br>
<b>Subject:</b> Re: [spring] Spring SR question??<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b><=
span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;colo=
r:black">[External Email. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div name=3D"messageBodySection">
<div>
<p class=3D"MsoNormal">Gyan,<br>
<br>
In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)&nbsp;=
<br>
If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, then da=
ta-plane is that of outer encapsulation - rfc8663 as the best example, e.g =
outer header would be IPv4/IPv6&#43;UDP<br>
Since bindings (SIDs) need to be distributed, you&#8217;d need a label dist=
ribution protocol, with IPv6 that would be IS-IS, OSPFv3 or BGP (or&nbsp;&n=
bsp;controller based).<br>
Vendor support for that is rather limited, I don&#8217;t recall any.<br>
Other option to distribute label bindings over IPv6 would be LDPv6 &#43; v6=
 IGP, I recall Junos implementation, there could be more.<br>
There&#8217;s quite interesting discussion on NANOG - <a href=3D"https://ma=
ilman.nanog.org/pipermail/nanog/2020-June/208111.html">
https://mailman.nanog.org/pipermail/nanog/2020-June/208111.html</a><br>
&nbsp;<br>
Hope this helps<o:p></o:p></p>
</div>
</div>
<div name=3D"messageSignatureSection">
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal">Cheers, <o:p></o:p></p>
<div>
<p class=3D"MsoNormal">Jeff<o:p></o:p></p>
</div>
</div>
</div>
<div name=3D"messageReplySection">
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt">On Jun 23, 2020, 1:52=
 PM -0700, Gyan Mishra &lt;<a href=3D"mailto:hayabusagsm@gmail.com">hayabus=
agsm@gmail.com</a>&gt;, wrote:<o:p></o:p></p>
<blockquote style=3D"border:none;border-left:solid windowtext 1.0pt;padding=
:0in 0in 0in 8.0pt;margin-left:3.75pt;margin-top:3.75pt;margin-right:3.75pt=
;margin-bottom:3.75pt">
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks Ron!<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Gyan<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<div>
<div>
<p class=3D"MsoNormal">On Tue, Jun 23, 2020 at 3:51 PM Ron Bonica &lt;<a hr=
ef=3D"mailto:rbonica@juniper.net">rbonica@juniper.net</a>&gt; wrote:<o:p></=
o:p></p>
</div>
<blockquote style=3D"border:none;border-left:solid #CCCCCC 1.0pt;padding:0i=
n 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-=
bottom:5.0pt">
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Gyan,<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">You can signal SR-MPLS over a network that has IPv6 enabled, but d=
oes not have IPv4 enabled.<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp; Ron<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"m4982824257615022543msipfooter30b3d538" align=3D"center" style=
=3D"margin:0in;margin-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bounces@ietf.org"=
 target=3D"_blank">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of</b> Gyan Mishra<br>
<b>Sent:</b> Tuesday, June 23, 2020 1:20 PM<br>
<b>To:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> [spring] Spring SR question??<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto;line-height:12.0pt;background:#FFEB9C">
<b><span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;=
color:black">[External Email. Be cautious of content]</span></b><o:p></o:p>=
</p>
</div>
</div>
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">All<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">SR-MPLS utilizes IPv4 data plane and and can service v4 v6 edges &=
nbsp;6to4 softwire mesh framework from the VPN overlay aspect..<o:p></o:p><=
/p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Can SR-MPLS use IPV6 data plane?<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Reason why I am asking is that it is very simple to get from LDPv4=
 core to SR-MPLS core.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">However if you have an existing brown field SP core and your end g=
oal is to get to SRv6 - how can you easily get there.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">So my thoughts are you can use SR-MPLS as a stepping stone so to s=
peak to get to SRv6.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">To that end you could use Greg Mirsky draft of tunneling SR-MPLS i=
n SRV6 interoperability and use other inter operability drafts. &nbsp;<o:p>=
</o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">But let&#8217;s say you prefer to get from point A go point B seam=
lessly and native naturally without any translation.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">An analogy would be migratory to IPV6 instead of using translation=
 technology tunnels you dual stand the entire network and use ds-lite or LS=
N or 6RD to close the gap.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">So my thoughts on getting to the &#8220;end state&#8221; SRv6 are =
we follows:<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">MPLS LDPv4&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">MPLS LDPv6&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">SR-MPLS v6&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Once you have a v6 core and you have decommissioned LDPv6 you now =
have the v6 data plan ready to go to get to SRv6<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">SRv6<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Only caveat with this idea is I am not sure if SR-MPLS supports IP=
v6 data plane v6 label binding.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Kind Regards&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Gyan<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">--
<o:p></o:p></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<p><a href=3D"https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yM=
aO-gk!Q4s7bsLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz45wy2DnuOsEl42h$" ta=
rget=3D"_blank"><span style=3D"color:#1155CC;text-decoration:none"><img bor=
der=3D"0" width=3D"81" height=3D"18" style=3D"width:.8437in;height:.1875in"=
 id=3D"_x0000_i1026" src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz-=
logo-email"></span></a><o:p></o:p></p>
<p style=3D"margin:0in;margin-bottom:.0001pt"><b><span style=3D"font-family=
:&quot;Arial&quot;,sans-serif;color:black">Gyan Mishra</span></b><o:p></o:p=
></p>
<p style=3D"margin:0in;margin-bottom:.0001pt"><i><span style=3D"font-family=
:&quot;Georgia&quot;,serif;color:black">Network Solutions Architect&nbsp;</=
span></i><o:p></o:p></p>
<p style=3D"margin:0in;margin-bottom:.0001pt"><i><span style=3D"font-family=
:&quot;Georgia&quot;,serif;color:black">M 301 502-1347<br>
<a href=3D"https://urldefense.com/v3/__https:/www.google.com/maps/search/13=
101*Columbia*Pike**A0D*0A*Silver*Spring,*MD?entry=3Dgmail&amp;source=3Dg__;=
KysrJSUrKys!!NEt6yMaO-gk!SHgdOi2pmbJVCHxRRVvni6kYfYGIoIdLPnbcZXH6p4R9FplXVz=
Pc_t4OTWIy4o8f$">13101 Columbia Pike</a>&nbsp;<br>
</span></i><span style=3D"color:black"><a href=3D"https://urldefense.com/v3=
/__https:/www.google.com/maps/search/13101*Columbia*Pike**A0D*0A*Silver*Spr=
ing,*MD?entry=3Dgmail&amp;source=3Dg__;KysrJSUrKys!!NEt6yMaO-gk!SHgdOi2pmbJ=
VCHxRRVvni6kYfYGIoIdLPnbcZXH6p4R9FplXVzPc_t4OTWIy4o8f$">Silver
 Spring, MD</a></span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
<p class=3D"MsoNormal">--<o:p></o:p></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<p><a href=3D"https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yM=
aO-gk!SHgdOi2pmbJVCHxRRVvni6kYfYGIoIdLPnbcZXH6p4R9FplXVzPc_t4OTV_RjKzI$" ta=
rget=3D"_blank"><span style=3D"color:#1155CC;text-decoration:none"><img bor=
der=3D"0" width=3D"81" height=3D"18" style=3D"width:.8437in;height:.1875in"=
 id=3D"_x0000_i1025" src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz-=
logo-email"></span></a><span style=3D"color:#222222"><o:p></o:p></span></p>
<p style=3D"margin:0in;margin-bottom:.0001pt;mso-line-height-alt:9.75pt"><b=
><span style=3D"font-family:&quot;Arial&quot;,sans-serif;color:black">Gyan =
Mishra</span></b><span style=3D"font-family:&quot;Arial&quot;,sans-serif;co=
lor:black"><o:p></o:p></span></p>
<p style=3D"margin:0in;margin-bottom:.0001pt;mso-line-height-alt:9.75pt"><i=
><span style=3D"font-family:&quot;Georgia&quot;,serif;color:black">Network =
Solutions Architect&nbsp;</span></i><span style=3D"color:#222222"><o:p></o:=
p></span></p>
<p style=3D"margin:0in;margin-bottom:.0001pt;mso-line-height-alt:9.75pt"><i=
><span style=3D"font-family:&quot;Georgia&quot;,serif;color:black">M 301 50=
2-1347<br>
13101 Columbia Pike&nbsp;<br>
</span></i><span style=3D"color:black">Silver Spring, MD<o:p></o:p></span><=
/p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<p class=3D"MsoNormal">_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org">spring@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring">https://www.ietf.o=
rg/mailman/listinfo/spring</a><o:p></o:p></p>
</blockquote>
</div>
</div>
</div>
</body>
</html>

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--=====_001_next=====--


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From: "Pengshuping (Peng Shuping)" <pengshuping@huawei.com>
To: James Guichard <james.n.guichard@futurewei.com>, "spring@ietf.org" <spring@ietf.org>
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I support the adoption.

Best regards,
Shuping


From: James Guichard [mailto:james.n.guichard@futurewei.com]
Sent: Wednesday, June 24, 2020 1:59 AM
To: spring@ietf.org
Cc: spring-chairs@ietf.org
Subject: WG LC https://datatracker.ietf.org/doc/draft-ietf-spring-sr-yang/

Dear SPRING WG:

This email starts a two week WG LC for https://datatracker.ietf.org/doc/dra=
ft-ietf-spring-sr-yang/.

Substantive comments should be directed to the mailing list no later than J=
uly 7th. Editorial suggestions can be sent to the authors.

Thanks!

Jim, Joel & Bruno


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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">I support the adoption.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">Best regards,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">Shuping
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
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0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> James Guichard [mailto:james.n.guichard@futurewei.com]
<br>
<b>Sent:</b> Wednesday, June 24, 2020 1:59 AM<br>
<b>To:</b> spring@ietf.org<br>
<b>Cc:</b> spring-chairs@ietf.org<br>
<b>Subject:</b> WG LC https://datatracker.ietf.org/doc/draft-ietf-spring-sr=
-yang/<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Dear SPRING WG:<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">This email starts a two week WG=
 LC for <a href=3D"https://datatracker.ietf.org/doc/draft-ietf-spring-sr-ya=
ng/">
<span style=3D"color:blue">https://datatracker.ietf.org/doc/draft-ietf-spri=
ng-sr-yang/</span></a>.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#212529;backgrou=
nd:white">Substantive comments should be directed to the mailing list no la=
ter than July 7th. Editorial suggestions can be sent to the authors.</span>=
<span lang=3D"EN-US"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Thanks!<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Jim, Joel &amp; Bruno<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
</div>
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From: "Gengxuesong (Geng Xuesong)" <gengxuesong@huawei.com>
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Yes, support.

Best Regards
Xuesong

From: spring [mailto:spring-bounces@ietf.org] On Behalf Of James Guichard
Sent: Wednesday, June 24, 2020 1:59 AM
To: spring@ietf.org
Cc: spring-chairs@ietf.org
Subject: [spring] WG LC https://datatracker.ietf.org/doc/draft-ietf-spring-=
sr-yang/

Dear SPRING WG:

This email starts a two week WG LC for https://datatracker.ietf.org/doc/dra=
ft-ietf-spring-sr-yang/.

Substantive comments should be directed to the mailing list no later than J=
uly 7th. Editorial suggestions can be sent to the authors.

Thanks!

Jim, Joel & Bruno


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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">Yes, support.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">Best Regards<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">Xuesong<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
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4.0pt">
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0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> spring [mailto:spring-bounces@ietf.org]
<b>On Behalf Of </b>James Guichard<br>
<b>Sent:</b> Wednesday, June 24, 2020 1:59 AM<br>
<b>To:</b> spring@ietf.org<br>
<b>Cc:</b> spring-chairs@ietf.org<br>
<b>Subject:</b> [spring] WG LC https://datatracker.ietf.org/doc/draft-ietf-=
spring-sr-yang/<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Dear SPRING WG:<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">This email starts a two week WG=
 LC for <a href=3D"https://datatracker.ietf.org/doc/draft-ietf-spring-sr-ya=
ng/">
<span style=3D"color:blue">https://datatracker.ietf.org/doc/draft-ietf-spri=
ng-sr-yang/</span></a>.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#212529;backgrou=
nd:white">Substantive comments should be directed to the mailing list no la=
ter than July 7th. Editorial suggestions can be sent to the authors.</span>=
<span lang=3D"EN-US"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Thanks!<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Jim, Joel &amp; Bruno<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
</div>
</div>
</body>
</html>

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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/CF_yemtpdzgFXp4klJdkDR8_p74>
Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Support! We are anxious to begin working on the related p2mp-policy draft o=
ver in pim.

mike

-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of bruno.decraene@orange.c=
om
Sent: Monday, June 22, 2020 7:46 AM
To: spring@ietf.org
Subject: [spring] WG adoption call for draft-voyer-spring-sr-replication-se=
gment

Hi SPRING WG,

Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG =
adoption.

Please indicate your support, comments, or objection, for adopting this dra=
ft as a working group item by July 6th 2020.

Could those who are willing to work on this document, please notify the lis=
t. That gives us an indication of the energy level in the working group to =
work on this.

As a reminder, the call for IPR has been done last November. [2]

Thanks,
Regards,
Bruno, Jim, Joel

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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: James Guichard <james.n.guichard@futurewei.com>, "spring@ietf.org" <spring@ietf.org>
CC: "spring-chairs@ietf.org" <spring-chairs@ietf.org>
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Yes, support.

Best regards,
Jie

From: spring [mailto:spring-bounces@ietf.org] On Behalf Of James Guichard
Sent: Wednesday, June 24, 2020 1:59 AM
To: spring@ietf.org
Cc: spring-chairs@ietf.org
Subject: [spring] WG LC https://datatracker.ietf.org/doc/draft-ietf-spring-=
sr-yang/

Dear SPRING WG:

This email starts a two week WG LC for https://datatracker.ietf.org/doc/dra=
ft-ietf-spring-sr-yang/.

Substantive comments should be directed to the mailing list no later than J=
uly 7th. Editorial suggestions can be sent to the authors.

Thanks!

Jim, Joel & Bruno


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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">Jie<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
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<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> spring [mailto:spring-bounces@ietf.org]
<b>On Behalf Of </b>James Guichard<br>
<b>Sent:</b> Wednesday, June 24, 2020 1:59 AM<br>
<b>To:</b> spring@ietf.org<br>
<b>Cc:</b> spring-chairs@ietf.org<br>
<b>Subject:</b> [spring] WG LC https://datatracker.ietf.org/doc/draft-ietf-=
spring-sr-yang/<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Dear SPRING WG:<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">This email starts a two week WG=
 LC for <a href=3D"https://datatracker.ietf.org/doc/draft-ietf-spring-sr-ya=
ng/">
<span style=3D"color:blue">https://datatracker.ietf.org/doc/draft-ietf-spri=
ng-sr-yang/</span></a>.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:#212529;backgrou=
nd:white">Substantive comments should be directed to the mailing list no la=
ter than July 7th. Editorial suggestions can be sent to the authors.</span>=
<span lang=3D"EN-US"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Thanks!<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Jim, Joel &amp; Bruno<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Wed, 24 Jun 2020 02:55:58 -0400
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Thanks Jeff

I was looking for just vanilla SR-MPLS support natively using IPV6 data
plane.

After reading a bit I confirmed below that both address families IPv4 and
IPv6 data planes are supported with SR-MPLS.

That is exactly what I was looking for.


When reading RFC 8402 Segment Routing Architecture specification it talks
about the two flavors SR-MPLS reuse of MPLS LDPv4 data plane and with SRv6
use of IPv6 data plane.  So I was under the impression that it was not
supported.

When I first read through RFC 8660 I skipped over the critical section
 2.5.1 which goes into discussion about FEC encoding assuming that it was
mentioned that both v4 and v6 data planes are supported.

 It would have been nice if that were more clearly stated explicitly then
just assumed that IPv6 data plane is supported with SR-MPLS.

So in RFC 8660 it does talk about IPv6 only in section 2.5.1  FEC encoding
below:

The address family is represented by 8 bits, where IPv4 is
         encoded as 100, and IPv6 is encoded as 110.  These numerical
         values are mentioned to guide implementations.  If other
         numerical values are used, then the numerical value of IPv4
         MUST be less than the numerical value for IPv6.

      -  All addresses are represented in 128 bits as follows:

         o  The IPv6 address is encoded natively.

         o  The IPv4 address is encoded in the most significant bits,
            and the remaining bits are set to zero.

      -  All prefixes are represented by (8 + 128) bits.

         o  A prefix is encoded in the most significant bits, and the
            remaining bits are set to zero.

         o  The prefix length is encoded before the prefix in an 8-bit
            field.



As far as the SR-MPLS / SRv6 interworking that is something to
definitely dig into on a separate discussion on interesting use cases
which there are few specifications  on namely the one mentioned RFC
8663 SR-MPLS over IP using RFC 4023 MPLSoGRE removing GRE and using
IPv6.  There are also some controller based interworking options as
well.


Thanks for the reference to the nanog link on SR interworking.


Gyan


On Tue, Jun 23, 2020 at 7:30 PM Jeff Tantsura <jefftant.ietf@gmail.com>
wrote:

> Gyan,
>
> In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)
> If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, then
> data-plane is that of outer encapsulation - rfc8663 as the best example,
> e.g outer header would be IPv4/IPv6+UDP
> Since bindings (SIDs) need to be distributed, you=E2=80=99d need a label
> distribution protocol, with IPv6 that would be IS-IS, OSPFv3 or BGP
> (or  controller based).
> Vendor support for that is rather limited, I don=E2=80=99t recall any.
> Other option to distribute label bindings over IPv6 would be LDPv6 + v6
> IGP, I recall Junos implementation, there could be more.
> There=E2=80=99s quite interesting discussion on NANOG -
> https://mailman.nanog.org/pipermail/nanog/2020-June/208111.html
>
> Hope this helps
>
> Cheers,
> Jeff
> On Jun 23, 2020, 1:52 PM -0700, Gyan Mishra <hayabusagsm@gmail.com>,
> wrote:
>
>
>
> Thanks Ron!
>
> Gyan
>
> On Tue, Jun 23, 2020 at 3:51 PM Ron Bonica <rbonica@juniper.net> wrote:
>
>> Gyan,
>>
>>
>>
>> You can signal SR-MPLS over a network that has IPv6 enabled, but does no=
t
>> have IPv4 enabled.
>>
>>
>>
>>                                                    Ron
>>
>>
>>
>>
>>
>>
>>
>> Juniper Business Use Only
>>
>> *From:* spring <spring-bounces@ietf.org> *On Behalf Of* Gyan Mishra
>> *Sent:* Tuesday, June 23, 2020 1:20 PM
>> *To:* SPRING WG <spring@ietf.org>
>> *Subject:* [spring] Spring SR question??
>>
>>
>>
>> *[External Email. Be cautious of content]*
>>
>>
>>
>>
>>
>> All
>>
>>
>>
>> SR-MPLS utilizes IPv4 data plane and and can service v4 v6 edges  6to4
>> softwire mesh framework from the VPN overlay aspect..
>>
>
>>
>> Can SR-MPLS use IPV6 data plane?
>>
>>
>>
>> Reason why I am asking is that it is very simple to get from LDPv4 core
>> to SR-MPLS core.
>>
>>
>>
>> However if you have an existing brown field SP core and your end goal is
>> to get to SRv6 - how can you easily get there.
>>
>>
>>
>> So my thoughts are you can use SR-MPLS as a stepping stone so to speak t=
o
>> get to SRv6.
>>
>>
>>
>> To that end you could use Greg Mirsky draft of tunneling SR-MPLS in SRV6
>> interoperability and use other inter operability drafts.
>>
>>
>>
>> But let=E2=80=99s say you prefer to get from point A go point B seamless=
ly and
>> native naturally without any translation.
>>
>>
>>
>> An analogy would be migratory to IPV6 instead of using translation
>> technology tunnels you dual stand the entire network and use ds-lite or =
LSN
>> or 6RD to close the gap.
>>
>>
>>
>> So my thoughts on getting to the =E2=80=9Cend state=E2=80=9D SRv6 are we=
 follows:
>>
>>
>>
>> MPLS LDPv4
>>
>>
>>
>> MPLS LDPv6
>>
>>
>>
>> SR-MPLS v6
>>
>>
>>
>> Once you have a v6 core and you have decommissioned LDPv6 you now have
>> the v6 data plan ready to go to get to SRv6
>>
>>
>>
>> SRv6
>>
>>
>>
>> Only caveat with this idea is I am not sure if SR-MPLS supports IPv6 dat=
a
>> plane v6 label binding.
>>
>>
>>
>>
>>
>> Kind Regards
>>
>>
>>
>> Gyan
>>
>>
>>
>> --
>>
>> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Sp=
ring,+MD?entry=3Dgmail&source=3Dg>
>>
>>
>> <https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yMaO-gk!Q4s7=
bsLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz45wy2DnuOsEl42h$>
>>
>> *Gyan Mishra*
>>
>> *Network Solutions Architect *
>>
>>
>>
>> *M 301 502-1347 13101 Columbia Pike
>> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Sp=
ring,+MD?entry=3Dgmail&source=3Dg> * Silver
>> Spring, MD
>> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Sp=
ring,+MD?entry=3Dgmail&source=3Dg>
>>
>>
>>
> --
>
> <http://www.verizon.com/>
>
> *Gyan Mishra*
>
> *Network Solutions A**rchitect *
>
>
>
> *M 301 502-1347 13101 Columbia Pike
> <https://www.google.com/maps/search/13101+Columbia+Pike+Silver+Spring,+MD=
?entry=3Dgmail&source=3Dg> *Silver
> Spring, MD
> <https://www.google.com/maps/search/13101+Columbia+Pike+Silver+Spring,+MD=
?entry=3Dgmail&source=3Dg>
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
> --

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--00000000000084170305a8cef8de
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div><br></div><div dir=3D"auto">Thanks Jeff=C2=A0</div><div dir=3D"auto"><=
br></div><div dir=3D"auto">I was looking for just vanilla SR-MPLS support n=
atively using IPV6 data plane.</div><div dir=3D"auto"><br></div><div dir=3D=
"auto">After reading a bit I confirmed below that both address families IPv=
4 and IPv6 data planes are supported with SR-MPLS. =C2=A0</div><div dir=3D"=
auto"><br></div><div dir=3D"auto">That is exactly what I was looking for.</=
div><div dir=3D"auto"><br></div><div dir=3D"auto"><br></div><div dir=3D"aut=
o">When reading RFC 8402 Segment Routing Architecture specification it talk=
s about the two flavors SR-MPLS reuse of MPLS LDPv4 data plane and with SRv=
6 use of IPv6 data plane.=C2=A0 So I was under the impression that it was n=
ot supported.</div><div dir=3D"auto"><br></div><div dir=3D"auto">When I fir=
st read through RFC 8660 I skipped over the critical section =C2=A02.5.1 wh=
ich goes into discussion about FEC encoding assuming that it was mentioned =
that both v4 and v6 data planes are supported.=C2=A0</div><div dir=3D"auto"=
><br></div><div dir=3D"auto">=C2=A0It would have been nice if that were mor=
e clearly stated explicitly then just assumed that IPv6 data plane is suppo=
rted with SR-MPLS.</div><div dir=3D"auto"><br></div><div dir=3D"auto">So in=
 RFC 8660 it does talk about IPv6 only in section 2.5.1 =C2=A0FEC encoding =
below:</div><div dir=3D"auto"><br></div><div dir=3D"auto"><pre style=3D"fon=
t-size:1em;margin-top:0px;margin-bottom:0px;font-family:monospace">The addr=
ess family is represented by 8 bits, where IPv4 is
         encoded as 100, and IPv6 is encoded as 110.  These numerical
         values are mentioned to guide implementations.  If other
         numerical values are used, then the numerical value of IPv4
         MUST be less than the numerical value for IPv6.

      -  All addresses are represented in 128 bits as follows:

         o  The IPv6 address is encoded natively.

         o  The IPv4 address is encoded in the most significant bits,
            and the remaining bits are set to zero.

      -  All prefixes are represented by (8 + 128) bits.

         o  A prefix is encoded in the most significant bits, and the
            remaining bits are set to zero.

         o  The prefix length is encoded before the prefix in an 8-bit
            field.</pre><pre style=3D"font-size:1em;margin-top:0px;margin-b=
ottom:0px;font-family:monospace"><br></pre><pre style=3D"font-size:1em;marg=
in-top:0px;margin-bottom:0px;font-family:monospace"><br></pre><pre style=3D=
"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:monospace">As f=
ar as the SR-MPLS / SRv6 interworking that is something to definitely dig i=
nto on a separate discussion on interesting use cases  which there are few =
specifications  on namely the one mentioned RFC 8663 SR-MPLS over IP using =
RFC 4023 MPLSoGRE removing GRE and using IPv6.  There are also some control=
ler based interworking options as well.</pre><pre style=3D"font-size:1em;ma=
rgin-top:0px;margin-bottom:0px;font-family:monospace"><br></pre><pre style=
=3D"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:monospace">T=
hanks for the reference to the nanog link on SR interworking.</pre><pre sty=
le=3D"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:monospace"=
><br></pre><pre style=3D"font-size:1em;margin-top:0px;margin-bottom:0px;fon=
t-family:monospace">Gyan </pre></div><div><br><div class=3D"gmail_quote"><d=
iv dir=3D"ltr" class=3D"gmail_attr">On Tue, Jun 23, 2020 at 7:30 PM Jeff Ta=
ntsura &lt;<a href=3D"mailto:jefftant.ietf@gmail.com">jefftant.ietf@gmail.c=
om</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margi=
n:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-l=
eft:1ex;border-left-color:rgb(204,204,204)">



<div>
<div name=3D"messageBodySection">
<div dir=3D"auto">Gyan,<br>
<br>
In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)=C2=A0=
<br>
If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, then da=
ta-plane is that of outer encapsulation - rfc8663 as the best example, e.g =
outer header would be IPv4/IPv6+UDP<br>
Since bindings (SIDs) need to be distributed, you=E2=80=99d need a label di=
stribution protocol, with IPv6 that would be IS-IS, OSPFv3 or BGP (or=C2=A0=
=C2=A0controller based).<br>
Vendor support for that is rather limited, I don=E2=80=99t recall any.<br>
Other option to distribute label bindings over IPv6 would be LDPv6 + v6 IGP=
, I recall Junos implementation, there could be more.<br>
There=E2=80=99s quite interesting discussion on NANOG - <a href=3D"https://=
mailman.nanog.org/pipermail/nanog/2020-June/208111.html" target=3D"_blank">=
https://mailman.nanog.org/pipermail/nanog/2020-June/208111.html</a><br>
=C2=A0<br>
Hope this helps</div>
</div>
<div name=3D"messageSignatureSection"><br>
<div>Cheers,
<div>Jeff</div>
</div>
</div>
<div name=3D"messageReplySection">On Jun 23, 2020, 1:52 PM -0700, Gyan Mish=
ra &lt;<a href=3D"mailto:hayabusagsm@gmail.com" target=3D"_blank">hayabusag=
sm@gmail.com</a>&gt;, wrote:<br>
<blockquote type=3D"cite" style=3D"border-left-width:thin;border-left-style=
:solid;margin:5px;padding-left:10px;border-left-color:grey">
<div><br></div>
<div dir=3D"auto"><br></div>
<div dir=3D"auto">Thanks Ron!</div>
<div dir=3D"auto"><br></div>
<div dir=3D"auto">Gyan</div>
<div dir=3D"auto"><br></div>
<div>
<div class=3D"gmail_quote">
<div dir=3D"ltr" class=3D"gmail_attr">On Tue, Jun 23, 2020 at 3:51 PM Ron B=
onica &lt;<a href=3D"mailto:rbonica@juniper.net" target=3D"_blank">rbonica@=
juniper.net</a>&gt; wrote:<br></div>
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:r=
gb(204,204,204)">
<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div>
<p class=3D"MsoNormal">Gyan,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">You can signal SR-MPLS over a network that has IPv6 =
enabled, but does not have IPv4 enabled.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 Ron<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p align=3D"center" style=3D"margin:0in 0in 0.0001pt;text-align:center"><sp=
an style=3D"font-size:7pt;color:black">Juniper Business Use Only</span><u><=
/u><u></u></p>
<div>
<div style=3D"border-style:solid none none;border-top-width:1pt;padding:3pt=
 0in 0in;border-top-color:rgb(225,225,225)">
<p class=3D"MsoNormal"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bou=
nces@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt; <b>On Beha=
lf Of</b> Gyan Mishra<br>
<b>Sent:</b> Tuesday, June 23, 2020 1:20 PM<br>
<b>To:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> [spring] Spring SR question??<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal" style=3D"line-height:12pt;background-color:rgb(255,2=
35,156)"><b><span style=3D"font-size:10.5pt;font-family:Lato,sans-serif;col=
or:black">[External Email. Be cautious of content]<u style=3D"font-family:L=
ato,sans-serif"></u><u style=3D"font-family:Lato,sans-serif"></u></span></b=
></p>
</div>
</div>
<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">All<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SR-MPLS utilizes IPv4 data plane and and can service=
 v4 v6 edges =C2=A06to4 softwire mesh framework from the VPN overlay aspect=
..<u></u><u></u></p>
</div></div></div></div></blockquote></div></div></blockquote></div></div><=
div><div name=3D"messageReplySection"><blockquote type=3D"cite" style=3D"bo=
rder-left-width:thin;border-left-style:solid;margin:5px;padding-left:10px;b=
order-left-color:grey"><div><div class=3D"gmail_quote"><blockquote class=3D=
"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;borde=
r-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><di=
v lang=3D"EN-US" link=3D"blue" vlink=3D"purple"><div><div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Can SR-MPLS use IPV6 data plane?<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Reason why I am asking is that it is very simple to =
get from LDPv4 core to SR-MPLS core.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">However if you have an existing brown field SP core =
and your end goal is to get to SRv6 - how can you easily get there.<u></u><=
u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">So my thoughts are you can use SR-MPLS as a stepping=
 stone so to speak to get to SRv6.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">To that end you could use Greg Mirsky draft of tunne=
ling SR-MPLS in SRV6 interoperability and use other inter operability draft=
s. =C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">But let=E2=80=99s say you prefer to get from point A=
 go point B seamlessly and native naturally without any translation.<u></u>=
<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">An analogy would be migratory to IPV6 instead of usi=
ng translation technology tunnels you dual stand the entire network and use=
 ds-lite or LSN or 6RD to close the gap.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">So my thoughts on getting to the =E2=80=9Cend state=
=E2=80=9D SRv6 are we follows:<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">MPLS LDPv4=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">MPLS LDPv6=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SR-MPLS v6=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Once you have a v6 core and you have decommissioned =
LDPv6 you now have the v6 data plan ready to go to get to SRv6<u></u><u></u=
></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SRv6<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Only caveat with this idea is I am not sure if SR-MP=
LS supports IPv6 data plane v6 label binding.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Kind Regards=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Gyan<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<p class=3D"MsoNormal">-- <u></u><u></u></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div><a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%=
0A+Silver+Spring,+MD?entry=3Dgmail&amp;source=3Dg" target=3D"_blank"></a>
<div>
<div>
<p><a href=3D"https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yM=
aO-gk!Q4s7bsLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz45wy2DnuOsEl42h$" ta=
rget=3D"_blank"><span style=3D"text-decoration:none;color:rgb(17,85,204)"><=
img border=3D"0" width=3D"81" height=3D"18" style=3D"width: 0.8437in; heigh=
t: 0.1875in;" id=3D"m_7880224842593265945m_4982824257615022543_x0000_i1025"=
 src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz-logo-email"></span><=
/a><span style=3D"color:rgb(34,34,34)"><u></u><u></u></span></p>
<p style=3D"margin:0in 0in 0.0001pt"><b><span style=3D"font-family:Arial,sa=
ns-serif;color:black">Gyan Mishra</span></b><span style=3D"font-family:Aria=
l,sans-serif;color:black"><u style=3D"font-family:Arial,sans-serif"></u><u =
style=3D"font-family:Arial,sans-serif"></u></span></p>
<p style=3D"margin:0in 0in 0.0001pt"><i><span style=3D"font-family:Georgia,=
serif;color:black">Network Solutions Architect=C2=A0</span></i><span style=
=3D"color:rgb(34,34,34)"><u></u><u></u></span></p>
<p style=3D"margin:0in 0in 0.0001pt"><i><span style=3D"font-family:Georgia,=
serif;color:black">M 301 502-1347<br>
<a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Si=
lver+Spring,+MD?entry=3Dgmail&amp;source=3Dg" target=3D"_blank" style=3D"fo=
nt-family:Georgia,serif">13101 Columbia Pike</a>=C2=A0<br></span></i> <span=
 style=3D"color:black"><a href=3D"https://www.google.com/maps/search/13101+=
Columbia+Pike+%0D%0A+Silver+Spring,+MD?entry=3Dgmail&amp;source=3Dg" target=
=3D"_blank">Silver Spring, MD</a><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div></div></div></blockquote></div></div></blockquote></div></div><div><d=
iv name=3D"messageReplySection"><blockquote type=3D"cite" style=3D"border-l=
eft-width:thin;border-left-style:solid;margin:5px;padding-left:10px;border-=
left-color:grey"><div><div class=3D"gmail_quote"><blockquote class=3D"gmail=
_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left=
-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div lang=
=3D"EN-US" link=3D"blue" vlink=3D"purple"><div><div></div>
</div>
</div>
</blockquote>
</div>
</div></blockquote></div></div><div><div name=3D"messageReplySection"><bloc=
kquote type=3D"cite" style=3D"border-left-width:thin;border-left-style:soli=
d;margin:5px;padding-left:10px;border-left-color:grey">
--<br>
<div dir=3D"ltr" data-smartmail=3D"gmail_signature">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div>
<p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com/" style=
=3D"padding-bottom:1em;display:inline-block;color:rgb(17,85,204)" target=3D=
"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz-logo-em=
ail" width=3D"81" height=3D"18" style=3D"height: 18px; width: 81px;"></a><b=
r></p>
<p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NHG DS&quot;=
,Arial,sans-serif;line-height:13px;color:black"><b style=3D"font-family:&qu=
ot;Verizon NHG DS&quot;,Arial,sans-serif">Gyan Mishra</b></p>
<p style=3D"margin:0px;line-height:13px;color:rgb(34,34,34)"><font face=3D"=
georgia, serif" style=3D"font-size:1em;font-family:georgia,serif;color:blac=
k"><i style=3D"font-family:georgia,serif">Network Solutions A</i></font><fo=
nt face=3D"georgia, serif" style=3D"font-family:georgia,serif;color:rgb(0,0=
,0)"><i style=3D"font-family:georgia,serif">rchitect=C2=A0</i></font></p>
<p style=3D"font-size:1em;margin:0px;line-height:13px;color:black"><i><font=
 face=3D"georgia, serif" style=3D"font-family:georgia,serif;color:rgb(0,0,0=
)">M 301 502-1347<br>
<a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+Silver+Sp=
ring,+MD?entry=3Dgmail&amp;source=3Dg" style=3D"font-family:georgia,serif">=
13101 Columbia Pike</a>=C2=A0<br></font></i><a href=3D"https://www.google.c=
om/maps/search/13101+Columbia+Pike+Silver+Spring,+MD?entry=3Dgmail&amp;sour=
ce=3Dg">Silver Spring, MD</a></p>
</div>
<div><br></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div></blockquote></div></div><div><div name=3D"messageReplySection"><bloc=
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</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
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G DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b=
></p><p style=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font fac=
e=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutio=
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=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px;line-height:13px;=
color:black"><i><font face=3D"georgia, serif">M 301 502-1347<br>13101 Colum=
bia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div></di=
v></div></div></div></div></div></div></div>

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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Wed, 24 Jun 2020 02:59:14 -0400
Message-ID: <CABNhwV09SoHzZJ8vKvMyCdPbi764eefU1sddSfCT8i7=dOYNiw@mail.gmail.com>
To: Ron Bonica <rbonica@juniper.net>
Cc: Jeff Tantsura <jefftant.ietf@gmail.com>, SPRING WG <spring@ietf.org>
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Subject: Re: [spring] Spring SR question??
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--0000000000002d701e05a8cf046b
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Thanks Ron for helping explain what I was looking for.

According to RFC 8660 SR-MPLS specification both v4 and v6 data planes are
supported. Took a bit to dig and find in the RFC.  I wish that was more
clearly stated.

All in all this is Good news!!

On Tue, Jun 23, 2020 at 9:23 PM Ron Bonica <rbonica@juniper.net> wrote:

> Jeff,
>
>
>
> I=E2=80=99m not sure that is what Gyan was asking. He can clarify.
>
>
>
> I think Gyan was asking about an environment where:
>
>
>
>    - SR-MPLS runs directly over ethernet. SR-MPLS is not encapsulated in
>    IP or UDP over IP
>    - The SR-MPLS signaling protocol (IS-IS or OSPFv3) does not required
>    IPv4 to be enabled on the network.
>
>
>
>                                                                        Ro=
n
>
>
>
>
>
>
>
> Juniper Business Use Only
>
> *From:* Jeff Tantsura <jefftant.ietf@gmail.com>
> *Sent:* Tuesday, June 23, 2020 7:30 PM
> *To:* Ron Bonica <rbonica@juniper.net>; Gyan Mishra <hayabusagsm@gmail.co=
m
> >
> *Cc:* SPRING WG <spring@ietf.org>
> *Subject:* Re: [spring] Spring SR question??
>
>
>
> *[External Email. Be cautious of content]*
>
>
>
> Gyan,
>
> In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)
> If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, then
> data-plane is that of outer encapsulation - rfc8663 as the best example,
> e.g outer header would be IPv4/IPv6+UDP
> Since bindings (SIDs) need to be distributed, you=E2=80=99d need a label
> distribution protocol, with IPv6 that would be IS-IS, OSPFv3 or BGP
> (or  controller based).
> Vendor support for that is rather limited, I don=E2=80=99t recall any.
> Other option to distribute label bindings over IPv6 would be LDPv6 + v6
> IGP, I recall Junos implementation, there could be more.
> There=E2=80=99s quite interesting discussion on NANOG -
> https://mailman.nanog.org/pipermail/nanog/2020-June/208111.html
>
> Hope this helps
>
>
>
> Cheers,
>
> Jeff
>
> On Jun 23, 2020, 1:52 PM -0700, Gyan Mishra <hayabusagsm@gmail.com>,
> wrote:
>
>
>
>
>
> Thanks Ron!
>
>
>
> Gyan
>
>
>
> On Tue, Jun 23, 2020 at 3:51 PM Ron Bonica <rbonica@juniper.net> wrote:
>
> Gyan,
>
>
>
> You can signal SR-MPLS over a network that has IPv6 enabled, but does not
> have IPv4 enabled.
>
>
>
>                                                    Ron
>
>
>
>
>
>
>
> Juniper Business Use Only
>
> *From:* spring <spring-bounces@ietf.org> *On Behalf Of* Gyan Mishra
> *Sent:* Tuesday, June 23, 2020 1:20 PM
> *To:* SPRING WG <spring@ietf.org>
> *Subject:* [spring] Spring SR question??
>
>
>
> *[External Email. Be cautious of content]*
>
>
>
>
>
> All
>
>
>
> SR-MPLS utilizes IPv4 data plane and and can service v4 v6 edges  6to4
> softwire mesh framework from the VPN overlay aspect..
>
>
>
> Can SR-MPLS use IPV6 data plane?
>
>
>
> Reason why I am asking is that it is very simple to get from LDPv4 core t=
o
> SR-MPLS core.
>
>
>
> However if you have an existing brown field SP core and your end goal is
> to get to SRv6 - how can you easily get there.
>
>
>
> So my thoughts are you can use SR-MPLS as a stepping stone so to speak to
> get to SRv6.
>
>
>
> To that end you could use Greg Mirsky draft of tunneling SR-MPLS in SRV6
> interoperability and use other inter operability drafts.
>
>
>
> But let=E2=80=99s say you prefer to get from point A go point B seamlessl=
y and
> native naturally without any translation.
>
>
>
> An analogy would be migratory to IPV6 instead of using translation
> technology tunnels you dual stand the entire network and use ds-lite or L=
SN
> or 6RD to close the gap.
>
>
>
> So my thoughts on getting to the =E2=80=9Cend state=E2=80=9D SRv6 are we =
follows:
>
>
>
> MPLS LDPv4
>
>
>
> MPLS LDPv6
>
>
>
> SR-MPLS v6
>
>
>
> Once you have a v6 core and you have decommissioned LDPv6 you now have th=
e
> v6 data plan ready to go to get to SRv6
>
>
>
> SRv6
>
>
>
> Only caveat with this idea is I am not sure if SR-MPLS supports IPv6 data
> plane v6 label binding.
>
>
>
>
>
> Kind Regards
>
>
>
> Gyan
>
>
>
> --
>
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver%0D%=
0A+Spring,+MD?entry=3Dgmail&source=3Dg>
>
>
> <https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yMaO-gk!Q4s7b=
sLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz45wy2DnuOsEl42h$>
>
> *Gyan Mishra*
>
> *Network Solutions Architect *
>
>
>
> *M 301 502-1347 13101 Columbia Pike
> <https://urldefense.com/v3/__https:/www.google.com/maps/search/13101*Colu=
mbia*Pike**A0D*0A*Silver*Spring,*MD?entry=3Dgmail&source=3Dg__;KysrJSUrKys!=
!NEt6yMaO-gk!SHgdOi2pmbJVCHxRRVvni6kYfYGIoIdLPnbcZXH6p4R9FplXVzPc_t4OTWIy4o=
8f$>
> *Silver Spring, MD
> <https://urldefense.com/v3/__https:/www.google.com/maps/search/13101*Colu=
mbia*Pike**A0D*0A*Silver*Spring,*MD?entry=3Dgmail&source=3Dg__;KysrJSUrKys!=
!NEt6yMaO-gk!SHgdOi2pmbJVCHxRRVvni6kYfYGIoIdLPnbcZXH6p4R9FplXVzPc_t4OTWIy4o=
8f$>
>
>
>
> --
>
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
>
>
> <https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yMaO-gk!SHgdO=
i2pmbJVCHxRRVvni6kYfYGIoIdLPnbcZXH6p4R9FplXVzPc_t4OTV_RjKzI$>
>
> *Gyan Mishra*
>
> *Network Solutions Architect *
>
>
>
> *M 301 502-1347 13101 Columbia Pike
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver%0D%=
0A+Spring,+MD?entry=3Dgmail&source=3Dg>
> *Silver Spring, MD
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
>
>
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
> --

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--0000000000002d701e05a8cf046b
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div><div dir=3D"auto">Thanks Ron for helping explain what I was looking fo=
r.</div></div><div dir=3D"auto"><br></div><div dir=3D"auto">According to RF=
C 8660 SR-MPLS specification both v4 and v6 data planes are supported. Took=
 a bit to dig and find in the RFC.=C2=A0 I wish that was more clearly state=
d.</div><div dir=3D"auto"><br></div><div dir=3D"auto">All in all this is Go=
od news!!</div><div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">On Tue, Jun 23, 2020 at 9:23 PM Ron Bonica &lt;<a href=3D"m=
ailto:rbonica@juniper.net">rbonica@juniper.net</a>&gt; wrote:<br></div><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #c=
cc solid;padding-left:1ex">





<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"m_-5393238862092795992WordSection1">
<p class=3D"MsoNormal">Jeff,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">I=E2=80=99m not sure that is what Gyan was asking. H=
e can clarify.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">I think Gyan was asking about an environment where:<=
u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"m_-5393238862092795992MsoListParagraph" style=3D"margin-left:0=
in">SR-MPLS runs directly over ethernet. SR-MPLS is not encapsulated in IP =
or UDP over IP<u></u><u></u></li><li class=3D"m_-5393238862092795992MsoList=
Paragraph" style=3D"margin-left:0in">The SR-MPLS signaling protocol (IS-IS =
or OSPFv3) does not required IPv4 to be enabled on the network.<u></u><u></=
u></li></ul></div></div><div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">=
<div class=3D"m_-5393238862092795992WordSection1">
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Ron<u=
></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"m_-5393238862092795992msipfooter30b3d538" align=3D"center" styl=
e=3D"margin:0in;margin-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><u></u><u></u></p>
<div>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> Jeff Tantsura &lt;<a href=3D"mailto:jef=
ftant.ietf@gmail.com" target=3D"_blank">jefftant.ietf@gmail.com</a>&gt; <br=
>
<b>Sent:</b> Tuesday, June 23, 2020 7:30 PM<br>
<b>To:</b> Ron Bonica &lt;<a href=3D"mailto:rbonica@juniper.net" target=3D"=
_blank">rbonica@juniper.net</a>&gt;; Gyan Mishra &lt;<a href=3D"mailto:haya=
busagsm@gmail.com" target=3D"_blank">hayabusagsm@gmail.com</a>&gt;<br>
<b>Cc:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> Re: [spring] Spring SR question??<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#ffeb9c"><b><=
span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;colo=
r:black">[External Email. Be cautious of content]<u></u><u></u></span></b><=
/p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div name=3D"messageBodySection">
<div>
<p class=3D"MsoNormal">Gyan,<br>
<br>
In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)=C2=A0=
<br>
If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, then da=
ta-plane is that of outer encapsulation - rfc8663 as the best example, e.g =
outer header would be IPv4/IPv6+UDP<br>
Since bindings (SIDs) need to be distributed, you=E2=80=99d need a label di=
stribution protocol, with IPv6 that would be IS-IS, OSPFv3 or BGP (or=C2=A0=
=C2=A0controller based).<br>
Vendor support for that is rather limited, I don=E2=80=99t recall any.<br>
Other option to distribute label bindings over IPv6 would be LDPv6 + v6 IGP=
, I recall Junos implementation, there could be more.<br>
There=E2=80=99s quite interesting discussion on NANOG - <a href=3D"https://=
mailman.nanog.org/pipermail/nanog/2020-June/208111.html" target=3D"_blank">
https://mailman.nanog.org/pipermail/nanog/2020-June/208111.html</a><br>
=C2=A0<br>
Hope this helps<u></u><u></u></p>
</div>
</div>
<div name=3D"messageSignatureSection">
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">Cheers, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal">Jeff<u></u><u></u></p>
</div>
</div>
</div>
<div name=3D"messageReplySection">
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt">On Jun 23, 2020, 1:52=
 PM -0700, Gyan Mishra &lt;<a href=3D"mailto:hayabusagsm@gmail.com" target=
=3D"_blank">hayabusagsm@gmail.com</a>&gt;, wrote:<u></u><u></u></p>
<blockquote style=3D"border:none;border-left:solid windowtext 1.0pt;padding=
:0in 0in 0in 8.0pt;margin-left:3.75pt;margin-top:3.75pt;margin-right:3.75pt=
;margin-bottom:3.75pt">
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks Ron!<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Gyan<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<div>
<div>
<p class=3D"MsoNormal">On Tue, Jun 23, 2020 at 3:51 PM Ron Bonica &lt;<a hr=
ef=3D"mailto:rbonica@juniper.net" target=3D"_blank">rbonica@juniper.net</a>=
&gt; wrote:<u></u><u></u></p>
</div>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0i=
n 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-=
bottom:5.0pt">
<div>
<div>
<p class=3D"MsoNormal">Gyan,<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">You can signal SR-MPLS over a network that has IPv6 =
enabled, but does not have IPv4 enabled.<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 Ron<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"m_-5393238862092795992m4982824257615022543msipfooter30b3d538" a=
lign=3D"center" style=3D"margin:0in;margin-bottom:.0001pt;text-align:center=
">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><u></u><u></u></p>
<div>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bou=
nces@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of</b> Gyan Mishra<br>
<b>Sent:</b> Tuesday, June 23, 2020 1:20 PM<br>
<b>To:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> [spring] Spring SR question??<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#ffeb9c">
<b><span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;=
color:black">[External Email. Be cautious of content]</span></b><u></u><u><=
/u></p>
</div>
</div>
<div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">All<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SR-MPLS utilizes IPv4 data plane and and can service=
 v4 v6 edges =C2=A06to4 softwire mesh framework from the VPN overlay aspect=
..<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Can SR-MPLS use IPV6 data plane?<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Reason why I am asking is that it is very simple to =
get from LDPv4 core to SR-MPLS core.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">However if you have an existing brown field SP core =
and your end goal is to get to SRv6 - how can you easily get there.<u></u><=
u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">So my thoughts are you can use SR-MPLS as a stepping=
 stone so to speak to get to SRv6.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">To that end you could use Greg Mirsky draft of tunne=
ling SR-MPLS in SRV6 interoperability and use other inter operability draft=
s. =C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">But let=E2=80=99s say you prefer to get from point A=
 go point B seamlessly and native naturally without any translation.<u></u>=
<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">An analogy would be migratory to IPV6 instead of usi=
ng translation technology tunnels you dual stand the entire network and use=
 ds-lite or LSN or 6RD to close the gap.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">So my thoughts on getting to the =E2=80=9Cend state=
=E2=80=9D SRv6 are we follows:<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">MPLS LDPv4=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">MPLS LDPv6=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SR-MPLS v6=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Once you have a v6 core and you have decommissioned =
LDPv6 you now have the v6 data plan ready to go to get to SRv6<u></u><u></u=
></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SRv6<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Only caveat with this idea is I am not sure if SR-MP=
LS supports IPv6 data plane v6 label binding.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Kind Regards=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Gyan<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<p class=3D"MsoNormal">--
<u></u><u></u></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div><a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%=
0A+Silver%0D%0A+Spring,+MD?entry=3Dgmail&amp;source=3Dg">
</a><div>
<p><a href=3D"https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yM=
aO-gk!Q4s7bsLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz45wy2DnuOsEl42h$" ta=
rget=3D"_blank"><span style=3D"color:#1155cc;text-decoration:none"><img bor=
der=3D"0" width=3D"81" height=3D"18" style=3D"width:.8437in;height:.1875in"=
 id=3D"m_-5393238862092795992_x0000_i1026" src=3D"http://ss7.vzw.com/is/ima=
ge/VerizonWireless/vz-logo-email"></span></a><u></u><u></u></p>
<p style=3D"margin:0in;margin-bottom:.0001pt"><b><span style=3D"font-family=
:&quot;Arial&quot;,sans-serif;color:black">Gyan Mishra</span></b><u></u><u>=
</u></p>
<p style=3D"margin:0in;margin-bottom:.0001pt"><i><span style=3D"font-family=
:&quot;Georgia&quot;,serif;color:black">Network Solutions Architect=C2=A0</=
span></i><u></u><u></u></p>
<p style=3D"margin:0in;margin-bottom:.0001pt"><i><span style=3D"font-family=
:&quot;Georgia&quot;,serif;color:black">M 301 502-1347<br>
<a href=3D"https://urldefense.com/v3/__https:/www.google.com/maps/search/13=
101*Columbia*Pike**A0D*0A*Silver*Spring,*MD?entry=3Dgmail&amp;source=3Dg__;=
KysrJSUrKys!!NEt6yMaO-gk!SHgdOi2pmbJVCHxRRVvni6kYfYGIoIdLPnbcZXH6p4R9FplXVz=
Pc_t4OTWIy4o8f$" target=3D"_blank">13101 Columbia Pike</a>=C2=A0<br>
</span></i><span style=3D"color:black"><a href=3D"https://urldefense.com/v3=
/__https:/www.google.com/maps/search/13101*Columbia*Pike**A0D*0A*Silver*Spr=
ing,*MD?entry=3Dgmail&amp;source=3Dg__;KysrJSUrKys!!NEt6yMaO-gk!SHgdOi2pmbJ=
VCHxRRVvni6kYfYGIoIdLPnbcZXH6p4R9FplXVzPc_t4OTWIy4o8f$" target=3D"_blank">S=
ilver
 Spring, MD</a></span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
<p class=3D"MsoNormal">--<u></u><u></u></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div><a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%=
0A+Silver+Spring,+MD?entry=3Dgmail&amp;source=3Dg">
</a><p><a href=3D"https://urldefense.com/v3/__http:/www.verizon.com/__;!!NE=
t6yMaO-gk!SHgdOi2pmbJVCHxRRVvni6kYfYGIoIdLPnbcZXH6p4R9FplXVzPc_t4OTV_RjKzI$=
" target=3D"_blank"><span style=3D"color:#1155cc;text-decoration:none"><img=
 border=3D"0" width=3D"81" height=3D"18" style=3D"width:.8437in;height:.187=
5in" id=3D"m_-5393238862092795992_x0000_i1025" src=3D"http://ss7.vzw.com/is=
/image/VerizonWireless/vz-logo-email"></span></a><span style=3D"color:#2222=
22"><u></u><u></u></span></p>
<p style=3D"margin:0in;margin-bottom:.0001pt"><b><span style=3D"font-family=
:&quot;Arial&quot;,sans-serif;color:black">Gyan Mishra</span></b><span styl=
e=3D"font-family:&quot;Arial&quot;,sans-serif;color:black"><u></u><u></u></=
span></p>
<p style=3D"margin:0in;margin-bottom:.0001pt"><i><span style=3D"font-family=
:&quot;Georgia&quot;,serif;color:black">Network Solutions Architect=C2=A0</=
span></i><span style=3D"color:#222222"><u></u><u></u></span></p>
<p style=3D"margin:0in;margin-bottom:.0001pt"><i><span style=3D"font-family=
:&quot;Georgia&quot;,serif;color:black">M 301 502-1347<br>
<a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Si=
lver%0D%0A+Spring,+MD?entry=3Dgmail&amp;source=3Dg">13101 Columbia Pike</a>=
=C2=A0<br>
</span></i><span style=3D"color:black"><a href=3D"https://www.google.com/ma=
ps/search/13101+Columbia+Pike+%0D%0A+Silver+Spring,+MD?entry=3Dgmail&amp;so=
urce=3Dg">Silver Spring, MD</a><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<p class=3D"MsoNormal">_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" target=3D"_blank">=
https://www.ietf.org/mailman/listinfo/spring</a><u></u><u></u></p>
</blockquote>
</div>
</div>
</div>
</div>

</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"l=
tr"><div><p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com=
/" style=3D"color:rgb(17,85,204);padding-bottom:1em;display:inline-block" t=
arget=3D"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz=
-logo-email" width=3D"81" height=3D"18" style=3D"height:18px;width:81px"></=
a><br></p><p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NH=
G DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b=
></p><p style=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font fac=
e=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutio=
ns A</i></font><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=
=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px;line-height:13px;=
color:black"><i><font face=3D"georgia, serif">M 301 502-1347<br>13101 Colum=
bia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div></di=
v></div></div></div></div></div></div></div>

--0000000000002d701e05a8cf046b--


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From: Robert Raszuk <robert@raszuk.net>
Date: Wed, 24 Jun 2020 11:24:24 +0200
Message-ID: <CAOj+MME7Dxu+zB9QNujEDQTU9_ZgeiGybHmXPP3rgsRbZNTzBw@mail.gmail.com>
To: Gyan Mishra <hayabusagsm@gmail.com>
Cc: Jeff Tantsura <jefftant.ietf@gmail.com>, Ron Bonica <rbonica@juniper.net>,  SPRING WG <spring@ietf.org>
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Subject: Re: [spring] Spring SR question??
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Gyan,

> I was looking for just vanilla SR-MPLS support natively using IPV6 data
plane.

MPLS is a data plane. There is no SR-MPLS using IPv6 data plane (with
exceptions of encap).

Your choice of data planes are:

IPv4
IPv6
MPLS

SR-MPLS uses MPLS data plane (with exceptions of encap) not IPv6 data
plane.

You can use any control plane to distribute SR-MPLS SIDs (or indexes for
that matter) and match it against SPT computed against your IGP topology
... no problem here.

But let's make sure we do not create more confusion here.

Last if your ultimate goal is to migrate LDPv4 to SRv6 I find it strange
that you would even consider transition via SR-MPLS. IMHO no need.

Cheers,
R.





On Wed, Jun 24, 2020 at 8:56 AM Gyan Mishra <hayabusagsm@gmail.com> wrote:

>
> Thanks Jeff
>
> I was looking for just vanilla SR-MPLS support natively using IPV6 data
> plane.
>
> After reading a bit I confirmed below that both address families IPv4 and
> IPv6 data planes are supported with SR-MPLS.
>
> That is exactly what I was looking for.
>
>
> When reading RFC 8402 Segment Routing Architecture specification it talks
> about the two flavors SR-MPLS reuse of MPLS LDPv4 data plane and with SRv=
6
> use of IPv6 data plane.  So I was under the impression that it was not
> supported.
>
> When I first read through RFC 8660 I skipped over the critical section
>  2.5.1 which goes into discussion about FEC encoding assuming that it was
> mentioned that both v4 and v6 data planes are supported.
>
>  It would have been nice if that were more clearly stated explicitly then
> just assumed that IPv6 data plane is supported with SR-MPLS.
>
> So in RFC 8660 it does talk about IPv6 only in section 2.5.1  FEC encodin=
g
> below:
>
> The address family is represented by 8 bits, where IPv4 is
>          encoded as 100, and IPv6 is encoded as 110.  These numerical
>          values are mentioned to guide implementations.  If other
>          numerical values are used, then the numerical value of IPv4
>          MUST be less than the numerical value for IPv6.
>
>       -  All addresses are represented in 128 bits as follows:
>
>          o  The IPv6 address is encoded natively.
>
>          o  The IPv4 address is encoded in the most significant bits,
>             and the remaining bits are set to zero.
>
>       -  All prefixes are represented by (8 + 128) bits.
>
>          o  A prefix is encoded in the most significant bits, and the
>             remaining bits are set to zero.
>
>          o  The prefix length is encoded before the prefix in an 8-bit
>             field.
>
>
>
> As far as the SR-MPLS / SRv6 interworking that is something to definitely=
 dig into on a separate discussion on interesting use cases  which there ar=
e few specifications  on namely the one mentioned RFC 8663 SR-MPLS over IP =
using RFC 4023 MPLSoGRE removing GRE and using IPv6.  There are also some c=
ontroller based interworking options as well.
>
>
> Thanks for the reference to the nanog link on SR interworking.
>
>
> Gyan
>
>
> On Tue, Jun 23, 2020 at 7:30 PM Jeff Tantsura <jefftant.ietf@gmail.com>
> wrote:
>
>> Gyan,
>>
>> In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)
>> If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, then
>> data-plane is that of outer encapsulation - rfc8663 as the best example,
>> e.g outer header would be IPv4/IPv6+UDP
>> Since bindings (SIDs) need to be distributed, you=E2=80=99d need a label
>> distribution protocol, with IPv6 that would be IS-IS, OSPFv3 or BGP
>> (or  controller based).
>> Vendor support for that is rather limited, I don=E2=80=99t recall any.
>> Other option to distribute label bindings over IPv6 would be LDPv6 + v6
>> IGP, I recall Junos implementation, there could be more.
>> There=E2=80=99s quite interesting discussion on NANOG -
>> https://mailman.nanog.org/pipermail/nanog/2020-June/208111.html
>>
>> Hope this helps
>>
>> Cheers,
>> Jeff
>> On Jun 23, 2020, 1:52 PM -0700, Gyan Mishra <hayabusagsm@gmail.com>,
>> wrote:
>>
>>
>>
>> Thanks Ron!
>>
>> Gyan
>>
>> On Tue, Jun 23, 2020 at 3:51 PM Ron Bonica <rbonica@juniper.net> wrote:
>>
>>> Gyan,
>>>
>>>
>>>
>>> You can signal SR-MPLS over a network that has IPv6 enabled, but does
>>> not have IPv4 enabled.
>>>
>>>
>>>
>>>                                                    Ron
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Juniper Business Use Only
>>>
>>> *From:* spring <spring-bounces@ietf.org> *On Behalf Of* Gyan Mishra
>>> *Sent:* Tuesday, June 23, 2020 1:20 PM
>>> *To:* SPRING WG <spring@ietf.org>
>>> *Subject:* [spring] Spring SR question??
>>>
>>>
>>>
>>> *[External Email. Be cautious of content]*
>>>
>>>
>>>
>>>
>>>
>>> All
>>>
>>>
>>>
>>> SR-MPLS utilizes IPv4 data plane and and can service v4 v6 edges  6to4
>>> softwire mesh framework from the VPN overlay aspect...
>>>
>>
>>>
>>> Can SR-MPLS use IPV6 data plane?
>>>
>>>
>>>
>>> Reason why I am asking is that it is very simple to get from LDPv4 core
>>> to SR-MPLS core.
>>>
>>>
>>>
>>> However if you have an existing brown field SP core and your end goal i=
s
>>> to get to SRv6 - how can you easily get there.
>>>
>>>
>>>
>>> So my thoughts are you can use SR-MPLS as a stepping stone so to speak
>>> to get to SRv6.
>>>
>>>
>>>
>>> To that end you could use Greg Mirsky draft of tunneling SR-MPLS in SRV=
6
>>> interoperability and use other inter operability drafts.
>>>
>>>
>>>
>>> But let=E2=80=99s say you prefer to get from point A go point B seamles=
sly and
>>> native naturally without any translation.
>>>
>>>
>>>
>>> An analogy would be migratory to IPV6 instead of using translation
>>> technology tunnels you dual stand the entire network and use ds-lite or=
 LSN
>>> or 6RD to close the gap.
>>>
>>>
>>>
>>> So my thoughts on getting to the =E2=80=9Cend state=E2=80=9D SRv6 are w=
e follows:
>>>
>>>
>>>
>>> MPLS LDPv4
>>>
>>>
>>>
>>> MPLS LDPv6
>>>
>>>
>>>
>>> SR-MPLS v6
>>>
>>>
>>>
>>> Once you have a v6 core and you have decommissioned LDPv6 you now have
>>> the v6 data plan ready to go to get to SRv6
>>>
>>>
>>>
>>> SRv6
>>>
>>>
>>>
>>> Only caveat with this idea is I am not sure if SR-MPLS supports IPv6
>>> data plane v6 label binding.
>>>
>>>
>>>
>>>
>>>
>>> Kind Regards
>>>
>>>
>>>
>>> Gyan
>>>
>>>
>>>
>>> --
>>>
>>> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+S=
pring,+MD?entry=3Dgmail&source=3Dg>
>>>
>>>
>>> <https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yMaO-gk!Q4s=
7bsLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz45wy2DnuOsEl42h$>
>>>
>>> *Gyan Mishra*
>>>
>>> *Network Solutions Architect *
>>>
>>>
>>>
>>> *M 301 502-1347 13101 Columbia Pike
>>> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+S=
pring,+MD?entry=3Dgmail&source=3Dg> * Silver
>>> Spring, MD
>>> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+S=
pring,+MD?entry=3Dgmail&source=3Dg>
>>>
>>>
>>>
>> --
>>
>> <http://www.verizon.com/>
>>
>> *Gyan Mishra*
>>
>> *Network Solutions A**rchitect *
>>
>>
>>
>> *M 301 502-1347 13101 Columbia Pike
>> <https://www.google.com/maps/search/13101+Columbia+Pike+Silver+Spring,+M=
D?entry=3Dgmail&source=3Dg> *Silver
>> Spring, MD
>> <https://www.google.com/maps/search/13101+Columbia+Pike+Silver+Spring,+M=
D?entry=3Dgmail&source=3Dg>
>>
>> _______________________________________________
>> spring mailing list
>> spring@ietf.org
>> https://www.ietf.org/mailman/listinfo/spring
>>
>> --
>
> <http://www.verizon.com/>
>
> *Gyan Mishra*
>
> *Network Solutions A**rchitect *
>
>
>
> *M 301 502-134713101 Columbia Pike *Silver Spring, MD
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>

--00000000000052a4e205a8d10be7
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Gyan,<div><br></div><div>&gt; I was looking for just vanil=
la SR-MPLS support natively using IPV6 data plane.=C2=A0=C2=A0<br></div><di=
v><br></div><div>MPLS is a data plane. There is no SR-MPLS using IPv6 data =
plane=20

(with exceptions of encap).=C2=A0</div><div><br></div><div>Your choice of d=
ata planes are:=C2=A0</div><div><br></div><div>IPv4</div><div>IPv6=C2=A0</d=
iv><div>MPLS</div><div><br></div><div>SR-MPLS uses MPLS data plane (with ex=
ceptions of encap) not IPv6 data plane.=C2=A0</div><div><br></div><div>You =
can use any control plane to distribute SR-MPLS SIDs (or indexes for that m=
atter) and match it against SPT computed against your IGP topology ... no p=
roblem here.=C2=A0</div><div><br></div><div>But let&#39;s make sure we do n=
ot create more confusion here.=C2=A0</div><div><br></div><div>Last if your =
ultimate goal is to migrate LDPv4 to SRv6 I find it strange that you would =
even consider transition via SR-MPLS. IMHO no need.=C2=A0</div><div><br></d=
iv><div>Cheers,</div><div>R.</div><div><br></div><div><br></div><div><br></=
div><div><br></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" cl=
ass=3D"gmail_attr">On Wed, Jun 24, 2020 at 8:56 AM Gyan Mishra &lt;<a href=
=3D"mailto:hayabusagsm@gmail.com">hayabusagsm@gmail.com</a>&gt; wrote:<br><=
/div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bo=
rder-left:1px solid rgb(204,204,204);padding-left:1ex"><div><br></div><div =
dir=3D"auto">Thanks Jeff=C2=A0</div><div dir=3D"auto"><br></div><div dir=3D=
"auto">I was looking for just vanilla SR-MPLS support natively using IPV6 d=
ata plane.</div><div dir=3D"auto"><br></div><div dir=3D"auto">After reading=
 a bit I confirmed below that both address families IPv4 and IPv6 data plan=
es are supported with SR-MPLS. =C2=A0</div><div dir=3D"auto"><br></div><div=
 dir=3D"auto">That is exactly what I was looking for.</div><div dir=3D"auto=
"><br></div><div dir=3D"auto"><br></div><div dir=3D"auto">When reading RFC =
8402 Segment Routing Architecture specification it talks about the two flav=
ors SR-MPLS reuse of MPLS LDPv4 data plane and with SRv6 use of IPv6 data p=
lane.=C2=A0 So I was under the impression that it was not supported.</div><=
div dir=3D"auto"><br></div><div dir=3D"auto">When I first read through RFC =
8660 I skipped over the critical section =C2=A02.5.1 which goes into discus=
sion about FEC encoding assuming that it was mentioned that both v4 and v6 =
data planes are supported.=C2=A0</div><div dir=3D"auto"><br></div><div dir=
=3D"auto">=C2=A0It would have been nice if that were more clearly stated ex=
plicitly then just assumed that IPv6 data plane is supported with SR-MPLS.<=
/div><div dir=3D"auto"><br></div><div dir=3D"auto">So in RFC 8660 it does t=
alk about IPv6 only in section 2.5.1 =C2=A0FEC encoding below:</div><div di=
r=3D"auto"><br></div><div dir=3D"auto"><pre style=3D"font-size:1em;margin-t=
op:0px;margin-bottom:0px;font-family:monospace">The address family is repre=
sented by 8 bits, where IPv4 is
         encoded as 100, and IPv6 is encoded as 110.  These numerical
         values are mentioned to guide implementations.  If other
         numerical values are used, then the numerical value of IPv4
         MUST be less than the numerical value for IPv6.

      -  All addresses are represented in 128 bits as follows:

         o  The IPv6 address is encoded natively.

         o  The IPv4 address is encoded in the most significant bits,
            and the remaining bits are set to zero.

      -  All prefixes are represented by (8 + 128) bits.

         o  A prefix is encoded in the most significant bits, and the
            remaining bits are set to zero.

         o  The prefix length is encoded before the prefix in an 8-bit
            field.</pre><pre style=3D"font-size:1em;margin-top:0px;margin-b=
ottom:0px;font-family:monospace"><br></pre><pre style=3D"font-size:1em;marg=
in-top:0px;margin-bottom:0px;font-family:monospace"><br></pre><pre style=3D=
"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:monospace">As f=
ar as the SR-MPLS / SRv6 interworking that is something to definitely dig i=
nto on a separate discussion on interesting use cases  which there are few =
specifications  on namely the one mentioned RFC 8663 SR-MPLS over IP using =
RFC 4023 MPLSoGRE removing GRE and using IPv6.  There are also some control=
ler based interworking options as well.</pre><pre style=3D"font-size:1em;ma=
rgin-top:0px;margin-bottom:0px;font-family:monospace"><br></pre><pre style=
=3D"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:monospace">T=
hanks for the reference to the nanog link on SR interworking.</pre><pre sty=
le=3D"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:monospace"=
><br></pre><pre style=3D"font-size:1em;margin-top:0px;margin-bottom:0px;fon=
t-family:monospace">Gyan </pre></div><div><br><div class=3D"gmail_quote"><d=
iv dir=3D"ltr" class=3D"gmail_attr">On Tue, Jun 23, 2020 at 7:30 PM Jeff Ta=
ntsura &lt;<a href=3D"mailto:jefftant.ietf@gmail.com" target=3D"_blank">jef=
ftant.ietf@gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quo=
te" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204=
);padding-left:1ex">



<div>
<div name=3D"messageBodySection">
<div dir=3D"auto">Gyan,<br>
<br>
In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)=C2=A0=
<br>
If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, then da=
ta-plane is that of outer encapsulation - rfc8663 as the best example, e.g =
outer header would be IPv4/IPv6+UDP<br>
Since bindings (SIDs) need to be distributed, you=E2=80=99d need a label di=
stribution protocol, with IPv6 that would be IS-IS, OSPFv3 or BGP (or=C2=A0=
=C2=A0controller based).<br>
Vendor support for that is rather limited, I don=E2=80=99t recall any.<br>
Other option to distribute label bindings over IPv6 would be LDPv6 + v6 IGP=
, I recall Junos implementation, there could be more.<br>
There=E2=80=99s quite interesting discussion on NANOG - <a href=3D"https://=
mailman.nanog.org/pipermail/nanog/2020-June/208111.html" target=3D"_blank">=
https://mailman.nanog.org/pipermail/nanog/2020-June/208111.html</a><br>
=C2=A0<br>
Hope this helps</div>
</div>
<div name=3D"messageSignatureSection"><br>
<div>Cheers,
<div>Jeff</div>
</div>
</div>
<div name=3D"messageReplySection">On Jun 23, 2020, 1:52 PM -0700, Gyan Mish=
ra &lt;<a href=3D"mailto:hayabusagsm@gmail.com" target=3D"_blank">hayabusag=
sm@gmail.com</a>&gt;, wrote:<br>
<blockquote type=3D"cite" style=3D"border-left:thin solid grey;margin:5px;p=
adding-left:10px">
<div><br></div>
<div dir=3D"auto"><br></div>
<div dir=3D"auto">Thanks Ron!</div>
<div dir=3D"auto"><br></div>
<div dir=3D"auto">Gyan</div>
<div dir=3D"auto"><br></div>
<div>
<div class=3D"gmail_quote">
<div dir=3D"ltr" class=3D"gmail_attr">On Tue, Jun 23, 2020 at 3:51 PM Ron B=
onica &lt;<a href=3D"mailto:rbonica@juniper.net" target=3D"_blank">rbonica@=
juniper.net</a>&gt; wrote:<br></div>
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex">
<div lang=3D"EN-US">
<div>
<p class=3D"MsoNormal">Gyan,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">You can signal SR-MPLS over a network that has IPv6 =
enabled, but does not have IPv4 enabled.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 Ron<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p align=3D"center" style=3D"margin:0in 0in 0.0001pt;text-align:center"><sp=
an style=3D"font-size:7pt;color:black">Juniper Business Use Only</span><u><=
/u><u></u></p>
<div>
<div style=3D"border-style:solid none none;border-top-width:1pt;padding:3pt=
 0in 0in;border-top-color:rgb(225,225,225)">
<p class=3D"MsoNormal"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bou=
nces@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt; <b>On Beha=
lf Of</b> Gyan Mishra<br>
<b>Sent:</b> Tuesday, June 23, 2020 1:20 PM<br>
<b>To:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> [spring] Spring SR question??<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal" style=3D"line-height:12pt;background-color:rgb(255,2=
35,156)"><b><span style=3D"font-size:10.5pt;font-family:Lato,sans-serif;col=
or:black">[External Email. Be cautious of content]<u style=3D"font-family:L=
ato,sans-serif"></u><u style=3D"font-family:Lato,sans-serif"></u></span></b=
></p>
</div>
</div>
<div lang=3D"EN-US">
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">All<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SR-MPLS utilizes IPv4 data plane and and can service=
 v4 v6 edges =C2=A06to4 softwire mesh framework from the VPN overlay aspect=
...<u></u><u></u></p>
</div></div></div></div></blockquote></div></div></blockquote></div></div><=
div><div name=3D"messageReplySection"><blockquote type=3D"cite" style=3D"bo=
rder-left:thin solid grey;margin:5px;padding-left:10px"><div><div class=3D"=
gmail_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px =
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang=3D=
"EN-US"><div><div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Can SR-MPLS use IPV6 data plane?<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Reason why I am asking is that it is very simple to =
get from LDPv4 core to SR-MPLS core.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">However if you have an existing brown field SP core =
and your end goal is to get to SRv6 - how can you easily get there.<u></u><=
u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">So my thoughts are you can use SR-MPLS as a stepping=
 stone so to speak to get to SRv6.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">To that end you could use Greg Mirsky draft of tunne=
ling SR-MPLS in SRV6 interoperability and use other inter operability draft=
s. =C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">But let=E2=80=99s say you prefer to get from point A=
 go point B seamlessly and native naturally without any translation.<u></u>=
<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">An analogy would be migratory to IPV6 instead of usi=
ng translation technology tunnels you dual stand the entire network and use=
 ds-lite or LSN or 6RD to close the gap.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">So my thoughts on getting to the =E2=80=9Cend state=
=E2=80=9D SRv6 are we follows:<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">MPLS LDPv4=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">MPLS LDPv6=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SR-MPLS v6=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Once you have a v6 core and you have decommissioned =
LDPv6 you now have the v6 data plan ready to go to get to SRv6<u></u><u></u=
></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SRv6<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Only caveat with this idea is I am not sure if SR-MP=
LS supports IPv6 data plane v6 label binding.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Kind Regards=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Gyan<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<p class=3D"MsoNormal">-- <u></u><u></u></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div><a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%=
0A+Silver+Spring,+MD?entry=3Dgmail&amp;source=3Dg" target=3D"_blank"></a>
<div>
<div>
<p><a href=3D"https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yM=
aO-gk!Q4s7bsLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz45wy2DnuOsEl42h$" ta=
rget=3D"_blank"><span style=3D"text-decoration:none;color:rgb(17,85,204)"><=
img border=3D"0" width=3D"81" height=3D"18" style=3D"width: 0.8437in; heigh=
t: 0.1875in;" id=3D"gmail-m_-1059350545875781007m_7880224842593265945m_4982=
824257615022543_x0000_i1025" src=3D"http://ss7.vzw.com/is/image/VerizonWire=
less/vz-logo-email"></span></a><span style=3D"color:rgb(34,34,34)"><u></u><=
u></u></span></p>
<p style=3D"margin:0in 0in 0.0001pt"><b><span style=3D"font-family:Arial,sa=
ns-serif;color:black">Gyan Mishra</span></b><span style=3D"font-family:Aria=
l,sans-serif;color:black"><u style=3D"font-family:Arial,sans-serif"></u><u =
style=3D"font-family:Arial,sans-serif"></u></span></p>
<p style=3D"margin:0in 0in 0.0001pt"><i><span style=3D"font-family:Georgia,=
serif;color:black">Network Solutions Architect=C2=A0</span></i><span style=
=3D"color:rgb(34,34,34)"><u></u><u></u></span></p>
<p style=3D"margin:0in 0in 0.0001pt"><i><span style=3D"font-family:Georgia,=
serif;color:black">M 301 502-1347<br>
<a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Si=
lver+Spring,+MD?entry=3Dgmail&amp;source=3Dg" style=3D"font-family:Georgia,=
serif" target=3D"_blank">13101 Columbia Pike</a>=C2=A0<br></span></i> <span=
 style=3D"color:black"><a href=3D"https://www.google.com/maps/search/13101+=
Columbia+Pike+%0D%0A+Silver+Spring,+MD?entry=3Dgmail&amp;source=3Dg" target=
=3D"_blank">Silver Spring, MD</a><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div></div></div></blockquote></div></div></blockquote></div></div><div><d=
iv name=3D"messageReplySection"><blockquote type=3D"cite" style=3D"border-l=
eft:thin solid grey;margin:5px;padding-left:10px"><div><div class=3D"gmail_=
quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;=
border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang=3D"EN-US=
"><div><div></div>
</div>
</div>
</blockquote>
</div>
</div></blockquote></div></div><div><div name=3D"messageReplySection"><bloc=
kquote type=3D"cite" style=3D"border-left:thin solid grey;margin:5px;paddin=
g-left:10px">
--<br>
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div>
<p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com/" style=
=3D"padding-bottom:1em;display:inline-block;color:rgb(17,85,204)" target=3D=
"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz-logo-em=
ail" width=3D"81" height=3D"18" style=3D"height: 18px; width: 81px;"></a><b=
r></p>
<p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NHG DS&quot;=
,Arial,sans-serif;line-height:13px;color:black"><b style=3D"font-family:&qu=
ot;Verizon NHG DS&quot;,Arial,sans-serif">Gyan Mishra</b></p>
<p style=3D"margin:0px;line-height:13px;color:rgb(34,34,34)"><font face=3D"=
georgia, serif" style=3D"font-size:1em;font-family:georgia,serif;color:blac=
k"><i style=3D"font-family:georgia,serif">Network Solutions A</i></font><fo=
nt face=3D"georgia, serif" style=3D"font-family:georgia,serif;color:rgb(0,0=
,0)"><i style=3D"font-family:georgia,serif">rchitect=C2=A0</i></font></p>
<p style=3D"font-size:1em;margin:0px;line-height:13px;color:black"><i><font=
 face=3D"georgia, serif" style=3D"font-family:georgia,serif;color:rgb(0,0,0=
)">M 301 502-1347<br>
<a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+Silver+Sp=
ring,+MD?entry=3Dgmail&amp;source=3Dg" style=3D"font-family:georgia,serif" =
target=3D"_blank">13101 Columbia Pike</a>=C2=A0<br></font></i><a href=3D"ht=
tps://www.google.com/maps/search/13101+Columbia+Pike+Silver+Spring,+MD?entr=
y=3Dgmail&amp;source=3Dg" target=3D"_blank">Silver Spring, MD</a></p>
</div>
<div><br></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div></blockquote></div></div><div><div name=3D"messageReplySection"><bloc=
kquote type=3D"cite" style=3D"border-left:thin solid grey;margin:5px;paddin=
g-left:10px">
_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" target=3D"_blank">=
https://www.ietf.org/mailman/listinfo/spring</a><br></blockquote>
</div>
</div>

</blockquote></div></div>-- <br><div dir=3D"ltr"><div dir=3D"ltr"><div dir=
=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr=
"><div dir=3D"ltr"><div><p style=3D"color:rgb(34,34,34)"><a href=3D"http://=
www.verizon.com/" style=3D"color:rgb(17,85,204);padding-bottom:1em;display:=
inline-block" target=3D"_blank"><img src=3D"http://ss7.vzw.com/is/image/Ver=
izonWireless/vz-logo-email" width=3D"81" height=3D"18" style=3D"height: 18p=
x; width: 81px;"></a><br></p><p style=3D"font-size:1em;margin:0px;font-fami=
ly:&quot;Verizon NHG DS&quot;,Arial,sans-serif;line-height:13px;color:black=
"><b>Gyan Mishra</b></p><p style=3D"color:rgb(34,34,34);margin:0px;line-hei=
ght:13px"><font face=3D"georgia, serif" style=3D"color:black;font-size:1em"=
><i>Network Solutions A</i></font><font color=3D"#000000" face=3D"georgia, =
serif"><i>rchitect=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px=
;line-height:13px;color:black"><i><font face=3D"georgia, serif">M 301 502-1=
347<br>13101 Columbia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><=
div><br></div></div></div></div></div></div></div></div></div>
_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/listinfo/spring</a><br>
</blockquote></div>

--00000000000052a4e205a8d10be7--


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From: Linda Dunbar <linda.dunbar@futurewei.com>
To: Michael McBride <michael.mcbride@futurewei.com>, "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: WG adoption call for draft-voyer-spring-sr-replication-segment
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/r3cce7cnDJWwZXTVTjiQJt7n9Ys>
Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Support.=20
Linda Dunbar


-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of bruno.decraene@orange.c=
om
Sent: Monday, June 22, 2020 7:46 AM
To: spring@ietf.org
Subject: [spring] WG adoption call for draft-voyer-spring-sr-replication-se=
gment

Hi SPRING WG,

Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG =
adoption.

Please indicate your support, comments, or objection, for adopting this dra=
ft as a working group item by July 6th 2020.

Could those who are willing to work on this document, please notify the lis=
t. That gives us an indication of the energy level in the working group to =
work on this.

As a reminder, the call for IPR has been done last November. [2]

Thanks,
Regards,
Bruno, Jim, Joel

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From: Linda Dunbar <linda.dunbar@futurewei.com>
To: "spring@ietf.org" <spring@ietf.org>, James Guichard <james.n.guichard@futurewei.com>
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</head>
<body lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif"><o:p>&nbsp;</o:p></span></p>
<div>
<p><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,sans-seri=
f">Support, <o:p></o:p></span></p>
<p><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-ser=
if"><o:p>&nbsp;</o:p></span></p>
<p><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-ser=
if">Linda Dunbar<o:p></o:p></span></p>
<p><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,sans-seri=
f;color:black">&nbsp;<o:p></o:p></span></p>
<p><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,sans-seri=
f;color:black">&nbsp;<o:p></o:p></span></p>
<p><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,sans-seri=
f;color:black">&nbsp;</span><span style=3D"font-size:10.0pt;font-family:&qu=
ot;Tahoma&quot;,sans-serif">------------------------------<span style=3D"co=
lor:black"><o:p></o:p></span></span></p>
<p><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,sans-seri=
f;color:black">&nbsp;<o:p></o:p></span></p>
<p><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,sans-seri=
f;color:black">&nbsp;<o:p></o:p></span></p>
<p><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,sans-seri=
f;color:black">&nbsp;<o:p></o:p></span></p>
<p><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,sans-seri=
f;color:black">&nbsp;<o:p></o:p></span></p>
<p><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,sans-seri=
f;color:black">Dear SPRING WG:<o:p></o:p></span></p>
<div>
<div>
<div name=3D"messageReplySection">
<blockquote style=3D"margin-left:3.75pt;margin-top:3.75pt;margin-right:3.75=
pt;margin-bottom:3.75pt">
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;Times New Roman&quot;,serif;color=
:black">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;Times New Roman&quot;,serif;color=
:black">This email starts a two week WG LC for
<a href=3D"https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2=
F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-ietf-spring-sr-yang%2F&amp;data=3D02=
%7C01%7Clinda.dunbar%40futurewei.com%7C7dcc1881197c462b6d9f08d817d9938a%7C0=
fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637285570558970388&amp;sdata=3D3e=
a4CXetcwbZqg8pDS6mvqmrJEeYfmelPk95m3JI1RU%3D&amp;reserved=3D0" target=3D"_b=
lank">
https://datatracker.ietf.org/doc/draft-ietf-spring-sr-yang/</a>.<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;Times New Roman&quot;,serif;color=
:black">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;Times New Roman&quot;,serif;color=
:#212529;background:white">Substantive comments should be directed to the m=
ailing list no later than July 7th. Editorial suggestions
 can be sent to the authors.</span><span style=3D"font-family:&quot;Times N=
ew Roman&quot;,serif;color:black"><o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;Times New Roman&quot;,serif;color=
:black">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;Times New Roman&quot;,serif;color=
:black">Thanks!<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;Times New Roman&quot;,serif;color=
:black">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;Times New Roman&quot;,serif;color=
:black">Jim, Joel &amp; Bruno<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-family:&quot;Times New Roman&quot;,serif;color=
:black">&nbsp;<o:p></o:p></span></p>
</div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Times New Roman&quo=
t;,serif;color:black">_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org">spring@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring">https://www.ietf.o=
rg/mailman/listinfo/spring</a><o:p></o:p></span></p>
</blockquote>
</div>
</div>
</div>
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From: "Reshad Rahman (rrahman)" <rrahman@cisco.com>
To: James Guichard <james.n.guichard@futurewei.com>, "spring@ietf.org" <spring@ietf.org>
CC: "spring-chairs@ietf.org" <spring-chairs@ietf.org>
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From: "Zafar Ali (zali)" <zali@cisco.com>
To: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "spring@ietf.org" <spring@ietf.org>
CC: "Zafar Ali (zali)" <zali@cisco.com>
Thread-Topic: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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From: "Zafar Ali (zali)" <zali@cisco.com>
To: James Guichard <james.n.guichard@futurewei.com>, "spring@ietf.org" <spring@ietf.org>
CC: "spring-chairs@ietf.org" <spring-chairs@ietf.org>, "Zafar Ali (zali)" <zali@cisco.com>
Thread-Topic: [spring] WG LC https://datatracker.ietf.org/doc/draft-ietf-spring-sr-yang/
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Date: Thu, 25 Jun 2020 14:12:10 +0000
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Subject: Re: [spring] Spring SR question??
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Robert

Understood.

This is for brown field existing LDPv6 core.

The thought was migration from LDPv6 fo SRV6.

So with LDPv6 it=E2=80=99s simple to go to SR-MPLS v6  as you are reusing t=
he MPLS
data plane. So I was thinking of using that a simple stepping stone to get
to SRv6 end state.  We would  stay at SR-MPLSv6 phase and don=E2=80=99t hav=
e to
rush to SRv6 as we now gain all the SR benefits of SR-TE  per vrf coloring
features, Ti-LFA FRR and flex algo etc.

As SRv6 matures with the variety of SRH compression techniques to overcome
MSD issues and those get flushed out and also with PPR-Preferred Path
Routing etc all become standards we can then migrate to SRv6.

Kind Regards

Gyan


On Wed, Jun 24, 2020 at 5:24 AM Robert Raszuk <robert@raszuk.net> wrote:

> Gyan,
>
> > I was looking for just vanilla SR-MPLS support natively using IPV6 data
> plane.
>
> MPLS is a data plane. There is no SR-MPLS using IPv6 data plane (with
> exceptions of encap).
>
> Your choice of data planes are:
>
> IPv4
> IPv6
> MPLS
>
> SR-MPLS uses MPLS data plane (with exceptions of encap) not IPv6 data
> plane.
>
> You can use any control plane to distribute SR-MPLS SIDs (or indexes for
> that matter) and match it against SPT computed against your IGP topology
> ... no problem here.
>
> But let's make sure we do not create more confusion here.
>
> Last if your ultimate goal is to migrate LDPv4 to SRv6 I find it strange
> that you would even consider transition via SR-MPLS. IMHO no need.
>
> Cheers,
> R.
>
>
>
>
>
> On Wed, Jun 24, 2020 at 8:56 AM Gyan Mishra <hayabusagsm@gmail.com> wrote=
:
>
>>
>> Thanks Jeff
>>
>> I was looking for just vanilla SR-MPLS support natively using IPV6 data
>> plane.
>>
>> After reading a bit I confirmed below that both address families IPv4 an=
d
>> IPv6 data planes are supported with SR-MPLS.
>>
>> That is exactly what I was looking for.
>>
>>
>> When reading RFC 8402 Segment Routing Architecture specification it talk=
s
>> about the two flavors SR-MPLS reuse of MPLS LDPv4 data plane and with SR=
v6
>> use of IPv6 data plane.  So I was under the impression that it was not
>> supported.
>>
>> When I first read through RFC 8660 I skipped over the critical section
>>  2.5.1 which goes into discussion about FEC encoding assuming that it wa=
s
>> mentioned that both v4 and v6 data planes are supported.
>>
>>  It would have been nice if that were more clearly stated explicitly the=
n
>> just assumed that IPv6 data plane is supported with SR-MPLS.
>>
>> So in RFC 8660 it does talk about IPv6 only in section 2.5.1  FEC
>> encoding below:
>>
>> The address family is represented by 8 bits, where IPv4 is
>>          encoded as 100, and IPv6 is encoded as 110.  These numerical
>>          values are mentioned to guide implementations.  If other
>>          numerical values are used, then the numerical value of IPv4
>>          MUST be less than the numerical value for IPv6.
>>
>>       -  All addresses are represented in 128 bits as follows:
>>
>>          o  The IPv6 address is encoded natively.
>>
>>          o  The IPv4 address is encoded in the most significant bits,
>>             and the remaining bits are set to zero.
>>
>>       -  All prefixes are represented by (8 + 128) bits.
>>
>>          o  A prefix is encoded in the most significant bits, and the
>>             remaining bits are set to zero.
>>
>>          o  The prefix length is encoded before the prefix in an 8-bit
>>             field.
>>
>>
>>
>> As far as the SR-MPLS / SRv6 interworking that is something to definitel=
y dig into on a separate discussion on interesting use cases  which there a=
re few specifications  on namely the one mentioned RFC 8663 SR-MPLS over IP=
 using RFC 4023 MPLSoGRE removing GRE and using IPv6.  There are also some =
controller based interworking options as well.
>>
>>
>> Thanks for the reference to the nanog link on SR interworking.
>>
>>
>> Gyan
>>
>>
>> On Tue, Jun 23, 2020 at 7:30 PM Jeff Tantsura <jefftant.ietf@gmail.com>
>> wrote:
>>
> Gyan,
>>>
>>> In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)
>>> If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, the=
n
>>> data-plane is that of outer encapsulation - rfc8663 as the best example=
,
>>> e.g outer header would be IPv4/IPv6+UDP
>>> Since bindings (SIDs) need to be distributed, you=E2=80=99d need a labe=
l
>>> distribution protocol, with IPv6 that would be IS-IS, OSPFv3 or BGP
>>> (or  controller based).
>>> Vendor support for that is rather limited, I don=E2=80=99t recall any.
>>> Other option to distribute label bindings over IPv6 would be LDPv6 + v6
>>> IGP, I recall Junos implementation, there could be more.
>>> There=E2=80=99s quite interesting discussion on NANOG -
>>> https://mailman.nanog.org/pipermail/nanog/2020-June/208111.html
>>>
>>> Hope this helps
>>>
>>> Cheers,
>>> Jeff
>>>
>> On Jun 23, 2020, 1:52 PM -0700, Gyan Mishra <hayabusagsm@gmail.com>,
>>> wrote:
>>>
>>
>>>
>>> Thanks Ron!
>>>
>>> Gyan
>>>
>>> On Tue, Jun 23, 2020 at 3:51 PM Ron Bonica <rbonica@juniper.net> wrote:
>>>
>>> Gyan,
>>>>
>>>>
>>>>
>>>> You can signal SR-MPLS over a network that has IPv6 enabled, but does
>>>> not have IPv4 enabled.
>>>>
>>>>
>>>>
>>>>                                                    Ron
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Juniper Business Use Only
>>>>
>>>> *From:* spring <spring-bounces@ietf.org> *On Behalf Of* Gyan Mishra
>>>> *Sent:* Tuesday, June 23, 2020 1:20 PM
>>>> *To:* SPRING WG <spring@ietf.org>
>>>> *Subject:* [spring] Spring SR question??
>>>>
>>>>
>>>>
>>>> *[External Email. Be cautious of content]*
>>>>
>>>
>>>>
>>>>
>>>>
>>>> All
>>>>
>>>>
>>>>
>>>> SR-MPLS utilizes IPv4 data plane and and can service v4 v6 edges  6to4
>>>> softwire mesh framework from the VPN overlay aspect...
>>>>
>>>
>>>>
>>>> Can SR-MPLS use IPV6 data plane?
>>>>
>>>>
>>>>
>>>> Reason why I am asking is that it is very simple to get from LDPv4 cor=
e
>>>> to SR-MPLS core.
>>>>
>>>>
>>>>
>>>> However if you have an existing brown field SP core and your end goal
>>>> is to get to SRv6 - how can you easily get there.
>>>>
>>>>
>>>>
>>>> So my thoughts are you can use SR-MPLS as a stepping stone so to speak
>>>> to get to SRv6.
>>>>
>>>>
>>>>
>>>> To that end you could use Greg Mirsky draft of tunneling SR-MPLS in
>>>> SRV6 interoperability and use other inter operability drafts.
>>>>
>>>>
>>>>
>>>> But let=E2=80=99s say you prefer to get from point A go point B seamle=
ssly and
>>>> native naturally without any translation.
>>>>
>>>>
>>>>
>>>> An analogy would be migratory to IPV6 instead of using translation
>>>> technology tunnels you dual stand the entire network and use ds-lite o=
r LSN
>>>> or 6RD to close the gap.
>>>>
>>>>
>>>>
>>>> So my thoughts on getting to the =E2=80=9Cend state=E2=80=9D SRv6 are =
we follows:
>>>>
>>>>
>>>>
>>>> MPLS LDPv4
>>>>
>>>>
>>>>
>>>> MPLS LDPv6
>>>>
>>>>
>>>>
>>>> SR-MPLS v6
>>>>
>>>>
>>>>
>>>> Once you have a v6 core and you have decommissioned LDPv6 you now have
>>>> the v6 data plan ready to go to get to SRv6
>>>>
>>>>
>>>>
>>>> SRv6
>>>>
>>>>
>>>>
>>>> Only caveat with this idea is I am not sure if SR-MPLS supports IPv6
>>>> data plane v6 label binding.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Kind Regards
>>>>
>>>>
>>>>
>>>> Gyan
>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+=
Spring,+MD?entry=3Dgmail&source=3Dg>
>>>>
>>>>
>>>> <https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yMaO-gk!Q4=
s7bsLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz45wy2DnuOsEl42h$>
>>>>
>>>> *Gyan Mishra*
>>>>
>>>> *Network Solutions Architect *
>>>>
>>>>
>>>>
>>>> *M 301 502-1347 13101 Columbia Pike
>>>> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+=
Spring,+MD?entry=3Dgmail&source=3Dg>
>>>> <https://www.google.com/maps/search/13101+Columbia+Pike+%C2%A0+Silver+=
Spring,+MD?entry=3Dgmail&source=3Dg>* Silver
>>>> Spring, MD
>>>> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+=
Spring,+MD?entry=3Dgmail&source=3Dg>
>>>>
>>>>
>>>>
>>> --
>>>
>>> <http://www.verizon.com/>
>>>
>>> *Gyan Mishra*
>>>
>>> *Network Solutions A**rchitect *
>>>
>>>
>>>
>>> *M 301 502-1347 13101 Columbia Pike
>>> <https://www.google.com/maps/search/13101+Columbia+Pike+Silver+Spring,+=
MD?entry=3Dgmail&source=3Dg>
>>> <https://www.google.com/maps/search/13101+Columbia+Pike+%C2%A0+Silver+S=
pring,+MD?entry=3Dgmail&source=3Dg>*Silver
>>> Spring, MD
>>> <https://www.google.com/maps/search/13101+Columbia+Pike+Silver+Spring,+=
MD?entry=3Dgmail&source=3Dg>
>>>
>>> _______________________________________________
>>> spring mailing list
>>> spring@ietf.org
>>> https://www.ietf.org/mailman/listinfo/spring
>>>
>>> --
>>
>> <http://www.verizon.com/>
>>
>> *Gyan Mishra*
>>
>> *Network Solutions A**rchitect *
>>
>>
>>
>> *M 301 502-134713101 Columbia Pike
>> <https://www.google.com/maps/search/13101+Columbia+Pike+%C2%A0+Silver+Sp=
ring,+MD?entry=3Dgmail&source=3Dg> *Silver
>> Spring, MD
>> <https://www.google.com/maps/search/13101+Columbia+Pike+%C2%A0+Silver+Sp=
ring,+MD?entry=3Dgmail&source=3Dg>
>>
>> _______________________________________________
>> spring mailing list
>> spring@ietf.org
>> https://www.ietf.org/mailman/listinfo/spring
>>
> --

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

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<div><br></div><div><div dir=3D"auto">Robert=C2=A0</div><div dir=3D"auto"><=
br></div><div dir=3D"auto">Understood.</div><div dir=3D"auto"><br></div><di=
v dir=3D"auto">This is for brown field existing LDPv6 core.</div><div dir=
=3D"auto"><br></div><div dir=3D"auto">The thought was migration from LDPv6 =
fo SRV6.</div><div dir=3D"auto"><br></div><div dir=3D"auto">So with LDPv6 i=
t=E2=80=99s simple to go to SR-MPLS v6 =C2=A0as you are reusing the MPLS da=
ta plane. So I was thinking of using that a simple stepping stone to get to=
 SRv6 end state.=C2=A0 We would =C2=A0stay at SR-MPLSv6 phase and don=E2=80=
=99t have to rush to SRv6 as we now gain all the SR benefits of SR-TE =C2=
=A0per vrf coloring features, Ti-LFA FRR and flex algo etc. =C2=A0</div><di=
v dir=3D"auto"><br></div><div dir=3D"auto">As SRv6 matures with the variety=
 of SRH compression techniques to overcome MSD issues and those get flushed=
 out and also with PPR-Preferred Path Routing etc all become standards we c=
an then migrate to SRv6.</div><div dir=3D"auto"><br></div><div dir=3D"auto"=
>Kind Regards=C2=A0</div><div dir=3D"auto"><br></div><div dir=3D"auto">Gyan=
</div><div dir=3D"auto">=C2=A0</div><br><div class=3D"gmail_quote"><div dir=
=3D"ltr" class=3D"gmail_attr">On Wed, Jun 24, 2020 at 5:24 AM Robert Raszuk=
 &lt;<a href=3D"mailto:robert@raszuk.net">robert@raszuk.net</a>&gt; wrote:<=
br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;borde=
r-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">Gyan,<div><br></di=
v><div>&gt; I was looking for just vanilla SR-MPLS support natively using I=
PV6 data plane.=C2=A0=C2=A0<br></div><div><br></div><div>MPLS is a data pla=
ne. There is no SR-MPLS using IPv6 data plane=20

(with exceptions of encap).=C2=A0</div><div><br></div><div>Your choice of d=
ata planes are:=C2=A0</div><div><br></div><div>IPv4</div><div>IPv6=C2=A0</d=
iv><div>MPLS</div><div><br></div><div>SR-MPLS uses MPLS data plane (with ex=
ceptions of encap) not IPv6 data plane.=C2=A0</div><div><br></div><div>You =
can use any control plane to distribute SR-MPLS SIDs (or indexes for that m=
atter) and match it against SPT computed against your IGP topology ... no p=
roblem here.=C2=A0</div><div><br></div><div>But let&#39;s make sure we do n=
ot create more confusion here.=C2=A0</div><div><br></div><div>Last if your =
ultimate goal is to migrate LDPv4 to SRv6 I find it strange that you would =
even consider transition via SR-MPLS. IMHO no need.=C2=A0</div><div><br></d=
iv><div>Cheers,</div><div>R.</div><div><br></div><div><br></div><div><br></=
div><div><br></div></div><br><div class=3D"gmail_quote"></div><div class=3D=
"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Jun 24, 2020 at=
 8:56 AM Gyan Mishra &lt;<a href=3D"mailto:hayabusagsm@gmail.com" target=3D=
"_blank">hayabusagsm@gmail.com</a>&gt; wrote:<br></div></div><div class=3D"=
gmail_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px =
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"></blockquote=
></div><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding=
-left:1ex"><div><br></div><div dir=3D"auto">Thanks Jeff=C2=A0</div><div dir=
=3D"auto"><br></div><div dir=3D"auto">I was looking for just vanilla SR-MPL=
S support natively using IPV6 data plane.</div><div dir=3D"auto"><br></div>=
<div dir=3D"auto">After reading a bit I confirmed below that both address f=
amilies IPv4 and IPv6 data planes are supported with SR-MPLS. =C2=A0</div><=
div dir=3D"auto"><br></div><div dir=3D"auto">That is exactly what I was loo=
king for.</div><div dir=3D"auto"><br></div><div dir=3D"auto"><br></div><div=
 dir=3D"auto">When reading RFC 8402 Segment Routing Architecture specificat=
ion it talks about the two flavors SR-MPLS reuse of MPLS LDPv4 data plane a=
nd with SRv6 use of IPv6 data plane.=C2=A0 So I was under the impression th=
at it was not supported.</div><div dir=3D"auto"><br></div><div dir=3D"auto"=
>When I first read through RFC 8660 I skipped over the critical section =C2=
=A02.5.1 which goes into discussion about FEC encoding assuming that it was=
 mentioned that both v4 and v6 data planes are supported.=C2=A0</div><div d=
ir=3D"auto"><br></div><div dir=3D"auto">=C2=A0It would have been nice if th=
at were more clearly stated explicitly then just assumed that IPv6 data pla=
ne is supported with SR-MPLS.</div><div dir=3D"auto"><br></div><div dir=3D"=
auto">So in RFC 8660 it does talk about IPv6 only in section 2.5.1 =C2=A0FE=
C encoding below:</div><div dir=3D"auto"><br></div><div dir=3D"auto"><pre s=
tyle=3D"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:monospac=
e">The address family is represented by 8 bits, where IPv4 is
         encoded as 100, and IPv6 is encoded as 110.  These numerical
         values are mentioned to guide implementations.  If other
         numerical values are used, then the numerical value of IPv4
         MUST be less than the numerical value for IPv6.

      -  All addresses are represented in 128 bits as follows:

         o  The IPv6 address is encoded natively.

         o  The IPv4 address is encoded in the most significant bits,
            and the remaining bits are set to zero.

      -  All prefixes are represented by (8 + 128) bits.

         o  A prefix is encoded in the most significant bits, and the
            remaining bits are set to zero.

         o  The prefix length is encoded before the prefix in an 8-bit
            field.</pre><pre style=3D"font-size:1em;margin-top:0px;margin-b=
ottom:0px;font-family:monospace"><br></pre><pre style=3D"font-size:1em;marg=
in-top:0px;margin-bottom:0px;font-family:monospace"><br></pre><pre style=3D=
"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:monospace">As f=
ar as the SR-MPLS / SRv6 interworking that is something to definitely dig i=
nto on a separate discussion on interesting use cases  which there are few =
specifications  on namely the one mentioned RFC 8663 SR-MPLS over IP using =
RFC 4023 MPLSoGRE removing GRE and using IPv6.  There are also some control=
ler based interworking options as well.</pre><pre style=3D"font-size:1em;ma=
rgin-top:0px;margin-bottom:0px;font-family:monospace"><br></pre><pre style=
=3D"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:monospace">T=
hanks for the reference to the nanog link on SR interworking.</pre><pre sty=
le=3D"font-size:1em;margin-top:0px;margin-bottom:0px;font-family:monospace"=
><br></pre><pre style=3D"font-size:1em;margin-top:0px;margin-bottom:0px;fon=
t-family:monospace">Gyan </pre></div></blockquote></div><div class=3D"gmail=
_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><br><div cla=
ss=3D"gmail_quote"></div></div></blockquote></div><div class=3D"gmail_quote=
"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;borde=
r-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div class=3D"gmai=
l_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Jun 23, 2020 at 7:30=
 PM Jeff Tantsura &lt;<a href=3D"mailto:jefftant.ietf@gmail.com" target=3D"=
_blank">jefftant.ietf@gmail.com</a>&gt; wrote:<br></div></div></div></block=
quote></div><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" st=
yle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padd=
ing-left:1ex"><div><div class=3D"gmail_quote"><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,20=
4);padding-left:1ex">



<div></div></blockquote></div></div></blockquote></div><div class=3D"gmail_=
quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;=
border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div class=3D=
"gmail_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px=
 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>
<div name=3D"messageBodySection">
<div dir=3D"auto">Gyan,<br>
<br>
In SR-MPLS, either over IPv4 or IPv6 the data-plane is MPLS (rfc8660)=C2=A0=
<br>
If MPLS is tunneled over IP, e.g MPLS over GRE, MPLS over UDP, etc, then da=
ta-plane is that of outer encapsulation - rfc8663 as the best example, e.g =
outer header would be IPv4/IPv6+UDP<br>
Since bindings (SIDs) need to be distributed, you=E2=80=99d need a label di=
stribution protocol, with IPv6 that would be IS-IS, OSPFv3 or BGP (or=C2=A0=
=C2=A0controller based).<br>
Vendor support for that is rather limited, I don=E2=80=99t recall any.<br>
Other option to distribute label bindings over IPv6 would be LDPv6 + v6 IGP=
, I recall Junos implementation, there could be more.<br>
There=E2=80=99s quite interesting discussion on NANOG - <a href=3D"https://=
mailman.nanog.org/pipermail/nanog/2020-June/208111.html" target=3D"_blank">=
https://mailman.nanog.org/pipermail/nanog/2020-June/208111.html</a><br>
=C2=A0<br>
Hope this helps</div>
</div>
<div name=3D"messageSignatureSection"><br>
<div>Cheers,
<div>Jeff</div>
</div>
</div>
</div></blockquote></div></div></blockquote></div><div class=3D"gmail_quote=
"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;borde=
r-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div class=3D"gmai=
l_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8e=
x;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div name=
=3D"messageReplySection"></div></div></blockquote></div></div></blockquote>=
</div><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" style=3D=
"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-le=
ft:1ex"><div><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);pad=
ding-left:1ex"><div><div name=3D"messageReplySection">On Jun 23, 2020, 1:52=
 PM -0700, Gyan Mishra &lt;<a href=3D"mailto:hayabusagsm@gmail.com" target=
=3D"_blank">hayabusagsm@gmail.com</a>&gt;, wrote:<br>
</div></div></blockquote></div></div></blockquote></div><div class=3D"gmail=
_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div class=
=3D"gmail_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px =
0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><di=
v name=3D"messageReplySection"><blockquote type=3D"cite" style=3D"border-le=
ft:thin solid grey;margin:5px;padding-left:10px">
<div><br></div>
<div dir=3D"auto"><br></div>
<div dir=3D"auto">Thanks Ron!</div>
<div dir=3D"auto"><br></div>
<div dir=3D"auto">Gyan</div>
<div dir=3D"auto"><br></div>
<div>
<div class=3D"gmail_quote"></div></div></blockquote></div></div></blockquot=
e></div></div></blockquote></div><div class=3D"gmail_quote"><blockquote cla=
ss=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid =
rgb(204,204,204);padding-left:1ex"><div><div class=3D"gmail_quote"><blockqu=
ote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px=
 solid rgb(204,204,204);padding-left:1ex"><div><div name=3D"messageReplySec=
tion"><blockquote type=3D"cite" style=3D"border-left:thin solid grey;margin=
:5px;padding-left:10px"><div><div class=3D"gmail_quote">
<div dir=3D"ltr" class=3D"gmail_attr">On Tue, Jun 23, 2020 at 3:51 PM Ron B=
onica &lt;<a href=3D"mailto:rbonica@juniper.net" target=3D"_blank">rbonica@=
juniper.net</a>&gt; wrote:<br></div>
</div></div></blockquote></div></div></blockquote></div></div></blockquote>=
</div><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" style=3D=
"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-le=
ft:1ex"><div><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);pad=
ding-left:1ex"><div><div name=3D"messageReplySection"><blockquote type=3D"c=
ite" style=3D"border-left:thin solid grey;margin:5px;padding-left:10px"><di=
v><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" style=3D"mar=
gin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1=
ex"></blockquote></div></div></blockquote></div></div></blockquote></div></=
div></blockquote></div><div class=3D"gmail_quote"><blockquote class=3D"gmai=
l_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,20=
4,204);padding-left:1ex"><div><div class=3D"gmail_quote"><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rg=
b(204,204,204);padding-left:1ex"><div><div name=3D"messageReplySection"><bl=
ockquote type=3D"cite" style=3D"border-left:thin solid grey;margin:5px;padd=
ing-left:10px"><div><div class=3D"gmail_quote"><blockquote class=3D"gmail_q=
uote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,2=
04);padding-left:1ex">
<div lang=3D"EN-US">
<div>
<p class=3D"MsoNormal">Gyan,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">You can signal SR-MPLS over a network that has IPv6 =
enabled, but does not have IPv4 enabled.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 Ron<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p align=3D"center" style=3D"margin:0in 0in 0.0001pt;text-align:center"><sp=
an style=3D"font-size:7pt;color:black">Juniper Business Use Only</span><u><=
/u><u></u></p>
<div>
<div style=3D"border-style:solid none none;border-top-width:1pt;padding:3pt=
 0in 0in;border-top-color:rgb(225,225,225)">
<p class=3D"MsoNormal"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bou=
nces@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt; <b>On Beha=
lf Of</b> Gyan Mishra<br>
<b>Sent:</b> Tuesday, June 23, 2020 1:20 PM<br>
<b>To:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> [spring] Spring SR question??<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal" style=3D"line-height:12pt;background-color:rgb(255,2=
35,156)"><b><span style=3D"font-size:10.5pt;font-family:Lato,sans-serif;col=
or:black">[External Email. Be cautious of content]<u style=3D"font-family:L=
ato,sans-serif"></u><u style=3D"font-family:Lato,sans-serif"></u></span></b=
></p>
</div>
</div>
</blockquote></div></div></blockquote></div></div></blockquote></div></div>=
</blockquote></div><div class=3D"gmail_quote"><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,20=
4);padding-left:1ex"><div><div class=3D"gmail_quote"><blockquote class=3D"g=
mail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex"><div><div name=3D"messageReplySection"><blockqu=
ote type=3D"cite" style=3D"border-left:thin solid grey;margin:5px;padding-l=
eft:10px"><div><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote"=
 style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);p=
adding-left:1ex"><div lang=3D"EN-US">
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">All<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SR-MPLS utilizes IPv4 data plane and and can service=
 v4 v6 edges =C2=A06to4 softwire mesh framework from the VPN overlay aspect=
...<u></u><u></u></p>
</div></div></div></div></blockquote></div></div></blockquote></div></div><=
/blockquote></div></div></blockquote></div><div class=3D"gmail_quote"><bloc=
kquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:=
1px solid rgb(204,204,204);padding-left:1ex"><div><div class=3D"gmail_quote=
"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;borde=
r-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div name=3D"messa=
geReplySection"><blockquote type=3D"cite" style=3D"border-left:thin solid g=
rey;margin:5px;padding-left:10px"><div><div class=3D"gmail_quote"><blockquo=
te class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px =
solid rgb(204,204,204);padding-left:1ex"><div lang=3D"EN-US"><div><div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Can SR-MPLS use IPV6 data plane?<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Reason why I am asking is that it is very simple to =
get from LDPv4 core to SR-MPLS core.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">However if you have an existing brown field SP core =
and your end goal is to get to SRv6 - how can you easily get there.<u></u><=
u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">So my thoughts are you can use SR-MPLS as a stepping=
 stone so to speak to get to SRv6.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">To that end you could use Greg Mirsky draft of tunne=
ling SR-MPLS in SRV6 interoperability and use other inter operability draft=
s. =C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">But let=E2=80=99s say you prefer to get from point A=
 go point B seamlessly and native naturally without any translation.<u></u>=
<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">An analogy would be migratory to IPV6 instead of usi=
ng translation technology tunnels you dual stand the entire network and use=
 ds-lite or LSN or 6RD to close the gap.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">So my thoughts on getting to the =E2=80=9Cend state=
=E2=80=9D SRv6 are we follows:<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">MPLS LDPv4=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">MPLS LDPv6=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SR-MPLS v6=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Once you have a v6 core and you have decommissioned =
LDPv6 you now have the v6 data plan ready to go to get to SRv6<u></u><u></u=
></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">SRv6<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Only caveat with this idea is I am not sure if SR-MP=
LS supports IPv6 data plane v6 label binding.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Kind Regards=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Gyan<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<p class=3D"MsoNormal">-- <u></u><u></u></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div><a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%=
0A+Silver+Spring,+MD?entry=3Dgmail&amp;source=3Dg" target=3D"_blank"></a>
<div>
<div>
<p><a href=3D"https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yM=
aO-gk!Q4s7bsLfxzuPcWXIRDIeAIPQEmMceA3IXDq3kMe-U3ICOTolz45wy2DnuOsEl42h$" ta=
rget=3D"_blank"><span style=3D"text-decoration:none;color:rgb(17,85,204)"><=
img border=3D"0" width=3D"81" height=3D"18" style=3D"width:0.8437in;height:=
0.1875in" id=3D"m_-7793824321782174365gmail-m_-1059350545875781007m_7880224=
842593265945m_4982824257615022543_x0000_i1025" src=3D"http://ss7.vzw.com/is=
/image/VerizonWireless/vz-logo-email"></span></a><span style=3D"color:rgb(3=
4,34,34)"><u></u><u></u></span></p>
<p style=3D"margin:0in 0in 0.0001pt"><b><span style=3D"font-family:Arial,sa=
ns-serif;color:black">Gyan Mishra</span></b><span style=3D"font-family:Aria=
l,sans-serif;color:black"><u style=3D"font-family:Arial,sans-serif"></u><u =
style=3D"font-family:Arial,sans-serif"></u></span></p>
<p style=3D"margin:0in 0in 0.0001pt"><i><span style=3D"font-family:Georgia,=
serif;color:black">Network Solutions Architect=C2=A0</span></i><span style=
=3D"color:rgb(34,34,34)"><u></u><u></u></span></p>
<p style=3D"margin:0in 0in 0.0001pt"><i><span style=3D"font-family:Georgia,=
serif;color:black">M 301 502-1347<br>
<a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Si=
lver+Spring,+MD?entry=3Dgmail&amp;source=3Dg" style=3D"font-family:Georgia,=
serif" target=3D"_blank">13101 Columbia Pike</a><a href=3D"https://www.goog=
le.com/maps/search/13101+Columbia+Pike+%C2%A0+Silver+Spring,+MD?entry=3Dgma=
il&amp;source=3Dg">=C2=A0</a><br></span></i> <span style=3D"color:black"><a=
 href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silv=
er+Spring,+MD?entry=3Dgmail&amp;source=3Dg" target=3D"_blank">Silver Spring=
, MD</a><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div></div></div></blockquote></div></div></blockquote></div></div><div><d=
iv name=3D"messageReplySection"><blockquote type=3D"cite" style=3D"border-l=
eft:thin solid grey;margin:5px;padding-left:10px"><div><div class=3D"gmail_=
quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;=
border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang=3D"EN-US=
"><div><div></div>
</div>
</div>
</blockquote>
</div>
</div></blockquote></div></div><div><div name=3D"messageReplySection"><bloc=
kquote type=3D"cite" style=3D"border-left:thin solid grey;margin:5px;paddin=
g-left:10px">
--<br>
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div>
<p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com/" style=
=3D"padding-bottom:1em;display:inline-block;color:rgb(17,85,204)" target=3D=
"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz-logo-em=
ail" width=3D"81" height=3D"18" style=3D"height:18px;width:81px"></a><br></=
p>
<p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NHG DS&quot;=
,Arial,sans-serif;line-height:13px;color:black"><b style=3D"font-family:&qu=
ot;Verizon NHG DS&quot;,Arial,sans-serif">Gyan Mishra</b></p>
<p style=3D"margin:0px;line-height:13px;color:rgb(34,34,34)"><font face=3D"=
georgia, serif" style=3D"font-size:1em;font-family:georgia,serif;color:blac=
k"><i style=3D"font-family:georgia,serif">Network Solutions A</i></font><fo=
nt face=3D"georgia, serif" style=3D"font-family:georgia,serif;color:rgb(0,0=
,0)"><i style=3D"font-family:georgia,serif">rchitect=C2=A0</i></font></p>
<p style=3D"font-size:1em;margin:0px;line-height:13px;color:black"><i><font=
 face=3D"georgia, serif" style=3D"font-family:georgia,serif;color:rgb(0,0,0=
)">M 301 502-1347<br>
<a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+Silver+Sp=
ring,+MD?entry=3Dgmail&amp;source=3Dg" style=3D"font-family:georgia,serif" =
target=3D"_blank">13101 Columbia Pike</a><a href=3D"https://www.google.com/=
maps/search/13101+Columbia+Pike+%C2%A0+Silver+Spring,+MD?entry=3Dgmail&amp;=
source=3Dg">=C2=A0</a><br></font></i><a href=3D"https://www.google.com/maps=
/search/13101+Columbia+Pike+Silver+Spring,+MD?entry=3Dgmail&amp;source=3Dg"=
 target=3D"_blank">Silver Spring, MD</a></p>
</div>
<div><br></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div></blockquote></div></div><div><div name=3D"messageReplySection"><bloc=
kquote type=3D"cite" style=3D"border-left:thin solid grey;margin:5px;paddin=
g-left:10px">
_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" target=3D"_blank">=
https://www.ietf.org/mailman/listinfo/spring</a><br></blockquote>
</div>
</div>

</blockquote></div></div>-- <br><div dir=3D"ltr"><div dir=3D"ltr"><div dir=
=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr=
"><div dir=3D"ltr"><div><p style=3D"color:rgb(34,34,34)"><a href=3D"http://=
www.verizon.com/" style=3D"color:rgb(17,85,204);padding-bottom:1em;display:=
inline-block" target=3D"_blank"><img src=3D"http://ss7.vzw.com/is/image/Ver=
izonWireless/vz-logo-email" width=3D"81" height=3D"18" style=3D"height:18px=
;width:81px"></a><br></p><p style=3D"font-size:1em;margin:0px;font-family:&=
quot;Verizon NHG DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b=
>Gyan Mishra</b></p><p style=3D"color:rgb(34,34,34);margin:0px;line-height:=
13px"><font face=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>=
Network Solutions A</i></font><font color=3D"#000000" face=3D"georgia, seri=
f"><i>rchitect=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px;lin=
e-height:13px;color:black"><i><font face=3D"georgia, serif">M 301 502-1347<=
br><a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%C2%A0=
+Silver+Spring,+MD?entry=3Dgmail&amp;source=3Dg">13101 Columbia Pike</a>=C2=
=A0<br></font></i><a href=3D"https://www.google.com/maps/search/13101+Colum=
bia+Pike+%C2%A0+Silver+Spring,+MD?entry=3Dgmail&amp;source=3Dg">Silver Spri=
ng, MD</a></p></div><div><br></div></div></div></div></div></div></div></di=
v></div>
_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/listinfo/spring</a><br>
</blockquote></div>
</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"l=
tr"><div><p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com=
/" style=3D"color:rgb(17,85,204);padding-bottom:1em;display:inline-block" t=
arget=3D"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz=
-logo-email" width=3D"81" height=3D"18" style=3D"height:18px;width:81px"></=
a><br></p><p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NH=
G DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b=
></p><p style=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font fac=
e=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutio=
ns A</i></font><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=
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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Support.

Thanks,
Mike.

-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of bruno.decraene@orange.c=
om
Sent: Monday, June 22, 2020 10:46 AM
To: spring@ietf.org
Subject: [spring] WG adoption call for draft-voyer-spring-sr-replication-se=
gment

Hi SPRING WG,

Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG =
adoption.

Please indicate your support, comments, or objection, for adopting this dra=
ft as a working group item by July 6th 2020.

Could those who are willing to work on this document, please notify the lis=
t. That gives us an indication of the energy level in the working group to =
work on this.

As a reminder, the call for IPR has been done last November. [2]

Thanks,
Regards,
Bruno, Jim, Joel

[1] https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
[2] https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3=
k/


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From: "Jeffrey (Zhaohui) Zhang" <zzhang@juniper.net>
To: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: WG adoption call for draft-voyer-spring-sr-replication-segment
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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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As co-author I support the adoption, and commit to continuing the work to p=
rogress it.

Thanks.
Jeffrey


Juniper Business Use Only

-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of bruno.decraene@orange.c=
om
Sent: Monday, June 22, 2020 7:46 AM
To: spring@ietf.org
Subject: [spring] WG adoption call for draft-voyer-spring-sr-replication-se=
gment

Hi SPRING WG,

Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG =
adoption.

Please indicate your support, comments, or objection, for adopting this dra=
ft as a working group item by July 6th 2020.

Could those who are willing to work on this document, please notify the lis=
t. That gives us an indication of the energy level in the working group to =
work on this.

As a reminder, the call for IPR has been done last November. [2]

Thanks,
Regards,
Bruno, Jim, Joel

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From: Ahmed Bashandy <abashandy.ietf@gmail.com>
Date: Thu, 25 Jun 2020 15:15:03 -0700
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Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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--0000000000004ccca805a8efed1e
Content-Type: text/plain; charset="UTF-8"

Support

Ahmed

On Mon, Jun 22, 2020, 7:46 AM <bruno.decraene@orange.com> wrote:

> Hi SPRING WG,
>
> Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG
> adoption.
>
> Please indicate your support, comments, or objection, for adopting this
> draft as a working group item by July 6th 2020.
>
> Could those who are willing to work on this document, please notify the
> list. That gives us an indication of the energy level in the working group
> to work on this.
>
> As a reminder, the call for IPR has been done last November. [2]
>
> Thanks,
> Regards,
> Bruno, Jim, Joel
>
> [1] https://tools.ietf.org/html/draft-voyer-spring-sr-replication-segment
> [2]
> https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3k/
>
>
>
> _________________________________________________________________________________________________________________________
>
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> electroniques etant susceptibles d'alteration,
> Orange decline toute responsabilite si ce message a ete altere, deforme ou
> falsifie. Merci.
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--0000000000004ccca805a8efed1e
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<div dir=3D"auto"><div><br>Support</div><div dir=3D"auto"><br></div><div di=
r=3D"auto">Ahmed</div><div dir=3D"auto"><br><div class=3D"gmail_quote" dir=
=3D"auto"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Jun 22, 2020, 7:46 =
AM  &lt;<a href=3D"mailto:bruno.decraene@orange.com">bruno.decraene@orange.=
com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"marg=
in:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi SPRING WG,<br=
>
<br>
Authors of draft-voyer-spring-sr-replication-segment [1] have asked for WG =
adoption.<br>
<br>
Please indicate your support, comments, or objection, for adopting this dra=
ft as a working group item by July 6th 2020.<br>
<br>
Could those who are willing to work on this document, please notify the lis=
t. That gives us an indication of the energy level in the working group to =
work on this.<br>
<br>
As a reminder, the call for IPR has been done last November. [2]<br>
<br>
Thanks,<br>
Regards,<br>
Bruno, Jim, Joel<br>
<br>
[1] <a href=3D"https://tools.ietf.org/html/draft-voyer-spring-sr-replicatio=
n-segment" rel=3D"noreferrer noreferrer" target=3D"_blank">https://tools.ie=
tf.org/html/draft-voyer-spring-sr-replication-segment</a><br>
[2] <a href=3D"https://mailarchive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBb=
FD0Dl7Eszd3k/" rel=3D"noreferrer noreferrer" target=3D"_blank">https://mail=
archive.ietf.org/arch/msg/spring/tW-HHK7QzCw3ZBbFD0Dl7Eszd3k/</a><br>
<br>
<br>
___________________________________________________________________________=
______________________________________________<br>
<br>
Ce message et ses pieces jointes peuvent contenir des informations confiden=
tielles ou privilegiees et ne doivent donc<br>
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu=
 ce message par erreur, veuillez le signaler<br>
a l&#39;expediteur et le detruire ainsi que les pieces jointes. Les message=
s electroniques etant susceptibles d&#39;alteration,<br>
Orange decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.<br>
<br>
This message and its attachments may contain confidential or privileged inf=
ormation that may be protected by law;<br>
they should not be distributed, used or copied without authorisation.<br>
If you have received this email in error, please notify the sender and dele=
te this message and its attachments.<br>
As emails may be altered, Orange is not liable for messages that have been =
modified, changed or falsified.<br>
Thank you.<br>
<br>
_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank" rel=3D"noreferrer">spr=
ing@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" rel=3D"noreferrer =
noreferrer" target=3D"_blank">https://www.ietf.org/mailman/listinfo/spring<=
/a><br>
</blockquote></div></div></div>

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From: "Darren Dukes (ddukes)" <ddukes@cisco.com>
To: SPRING WG <spring@ietf.org>
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Subject: [spring] Fw: New Version Notification for draft-dukes-spring-srv6-overhead-analysis-00.txt
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Hello SPRING working group

There has been lots of work done in SPRING to develop, combine and refine m=
ethods of reducing the overhead of the SRv6 SRH.  We have some good submiss=
ions of requirements, framework analysis but no direct comparisons of diffe=
rent methods.

This draft kicks off that conversation with a simple analysis comparing SRv=
6 native compression available via draft-filsfilscheng-spring-srv6-srh-comp=
-sl-enc vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.


Thanks
  Darren



________________________________
From: internet-drafts@ietf.org <internet-drafts@ietf.org>
Sent: Saturday, June 27, 2020 1:00 AM
To: Darren Dukes (ddukes) <ddukes@cisco.com>
Subject: New Version Notification for draft-dukes-spring-srv6-overhead-anal=
ysis-00.txt


A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt
has been successfully submitted by Darren Dukes and posted to the
IETF repository.

Name:           draft-dukes-spring-srv6-overhead-analysis
Revision:       00
Title:          SRv6 Network Programming Overhead Analysis
Document date:  2020-06-27
Group:          Individual Submission
Pages:          9
URL:            https://www.ietf.org/internet-drafts/draft-dukes-spring-srv=
6-overhead-analysis-00.txt
Status:         https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-ov=
erhead-analysis/
Htmlized:       https://tools.ietf.org/html/draft-dukes-spring-srv6-overhea=
d-analysis-00
Htmlized:       https://datatracker.ietf.org/doc/html/draft-dukes-spring-sr=
v6-overhead-analysis


Abstract:
   SRv6 network programming provides the framework for the best
   compression of an IPv6 header within an SR domain.  This document
   provides the analysis to illustrate this fact.


The IETF Secretariat



--_000_BN6PR11MB40810ED7A162DA4F19BC9FEAC8900BN6PR11MB4081namp_
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if; font-size: 12pt">
Hello SPRING working group</div>
<div style=3D"margin: 0px; font-family: Calibri, Arial, Helvetica, sans-ser=
if; font-size: 12pt">
<br>
</div>
<div style=3D"margin: 0px; font-family: Calibri, Arial, Helvetica, sans-ser=
if; font-size: 12pt">
There has been lots of work done in SPRING to develop, combine and refine m=
ethods of reducing the overhead of the SRv6 SRH. &nbsp;We have some good su=
bmissions of requirements, framework analysis but no direct comparisons of =
different methods.</div>
<div style=3D"margin: 0px; font-family: Calibri, Arial, Helvetica, sans-ser=
if; font-size: 12pt">
<br>
</div>
<div style=3D"margin: 0px; font-family: Calibri, Arial, Helvetica, sans-ser=
if; font-size: 12pt">
This draft kicks off that conversation with a simple analysis comparing SRv=
6 native compression available via draft-filsfilscheng-spring-srv6-srh-comp=
-sl-enc&nbsp;vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.=
</div>
<div style=3D"margin: 0px; font-family: Calibri, Arial, Helvetica, sans-ser=
if; font-size: 12pt">
<br>
</div>
<div style=3D"margin: 0px; font-family: Calibri, Arial, Helvetica, sans-ser=
if; font-size: 12pt">
<br>
</div>
<div style=3D"margin: 0px; font-family: Calibri, Arial, Helvetica, sans-ser=
if; font-size: 12pt">
Thanks</div>
<div style=3D"margin: 0px; font-family: Calibri, Arial, Helvetica, sans-ser=
if; font-size: 12pt">
&nbsp; Darren</div>
<br>
<br>
</div>
<div>
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div id=3D"appendonsend"></div>
<hr tabindex=3D"-1" style=3D"display:inline-block; width:98%">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" co=
lor=3D"#000000" style=3D"font-size:11pt"><b>From:</b> internet-drafts@ietf.=
org &lt;internet-drafts@ietf.org&gt;<br>
<b>Sent:</b> Saturday, June 27, 2020 1:00 AM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;ddukes@cisco.com&gt;<br>
<b>Subject:</b> New Version Notification for draft-dukes-spring-srv6-overhe=
ad-analysis-00.txt</font>
<div>&nbsp;</div>
</div>
<div class=3D"BodyFragment"><font size=3D"2"><span style=3D"font-size:11pt"=
>
<div class=3D"PlainText"><br>
A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt<br>
has been successfully submitted by Darren Dukes and posted to the<br>
IETF repository.<br>
<br>
Name:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; draft-duk=
es-spring-srv6-overhead-analysis<br>
Revision:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 00<br>
Title:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; SRv6 Network P=
rogramming Overhead Analysis<br>
Document date:&nbsp; 2020-06-27<br>
Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Individual Sub=
mission<br>
Pages:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9<br>
URL:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a h=
ref=3D"https://www.ietf.org/internet-drafts/draft-dukes-spring-srv6-overhea=
d-analysis-00.txt">
https://www.ietf.org/internet-drafts/draft-dukes-spring-srv6-overhead-analy=
sis-00.txt</a><br>
Status:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://=
datatracker.ietf.org/doc/draft-dukes-spring-srv6-overhead-analysis/">
https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-overhead-analysis/=
</a><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://tools.ietf=
.org/html/draft-dukes-spring-srv6-overhead-analysis-00">
https://tools.ietf.org/html/draft-dukes-spring-srv6-overhead-analysis-00</a=
><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://datatracke=
r.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-analysis">
https://datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-anal=
ysis</a><br>
<br>
<br>
Abstract:<br>
&nbsp;&nbsp; SRv6 network programming provides the framework for the best<b=
r>
&nbsp;&nbsp; compression of an IPv6 header within an SR domain.&nbsp; This =
document<br>
&nbsp;&nbsp; provides the analysis to illustrate this fact.<br>
<br>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>
The IETF Secretariat<br>
<br>
<br>
</div>
</span></font></div>
</div>
</body>
</html>

--_000_BN6PR11MB40810ED7A162DA4F19BC9FEAC8900BN6PR11MB4081namp_--


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Subject: [spring] I-D Action: draft-ietf-spring-srv6-network-programming-16.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Source Packet Routing in Networking WG of the IETF.

        Title           : SRv6 Network Programming
        Authors         : Clarence Filsfils
                          Pablo Camarillo Garvia
                          John Leddy
                          Daniel Voyer
                          Satoru Matsushima
                          Zhenbin Li
	Filename        : draft-ietf-spring-srv6-network-programming-16.txt
	Pages           : 42
	Date            : 2020-06-27

Abstract:
   The SRv6 Network Programming framework enables a network operator or
   an application to specify a packet processing program by encoding a
   sequence of instructions in the IPv6 packet header.

   Each instruction is implemented on one or several nodes in the
   network and identified by an SRv6 Segment Identifier in the packet.

   This document defines the SRv6 Network Programming concept and
   specifies the base set of SRv6 behaviors that enables the creation of
   interoperable overlays with underlay optimization (Service Level
   Agreements).


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-spring-srv6-network-programming/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-spring-srv6-network-programming-16
https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-programming-16

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-spring-srv6-network-programming-16


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/



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Subject: Re: [spring] I-D Action: draft-ietf-spring-srv6-network-programming-16.txt
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Hi all,

We have just submitted draft-ietf-spring-srv6-network-programming-16.
The authors have been working with the new document shepherd to address the=
 comments raised by the IESG.=20
Particularly we have:
- Restructured the PSP section
- Added addressing space considerations=20
- Clarified SID FUNCT vs Behavior
- Fixed typos in pseudocodes=20
- Added the SID behavior defined in RFC8754 to the IANA registry in section=
 9.2
- Added reference to RFC8214

I would like to thank Joel for his review and comments.

Thanks,
Pablo.


-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of internet-drafts@ietf.or=
g
Sent: s=E1bado, 27 de junio de 2020 18:40
To: i-d-announce@ietf.org
Cc: spring@ietf.org
Subject: [spring] I-D Action: draft-ietf-spring-srv6-network-programming-16=
.txt


A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
This draft is a work item of the Source Packet Routing in Networking WG of =
the IETF.

        Title           : SRv6 Network Programming
        Authors         : Clarence Filsfils
                          Pablo Camarillo Garvia
                          John Leddy
                          Daniel Voyer
                          Satoru Matsushima
                          Zhenbin Li
	Filename        : draft-ietf-spring-srv6-network-programming-16.txt
	Pages           : 42
	Date            : 2020-06-27

Abstract:
   The SRv6 Network Programming framework enables a network operator or
   an application to specify a packet processing program by encoding a
   sequence of instructions in the IPv6 packet header.

   Each instruction is implemented on one or several nodes in the
   network and identified by an SRv6 Segment Identifier in the packet.

   This document defines the SRv6 Network Programming concept and
   specifies the base set of SRv6 behaviors that enables the creation of
   interoperable overlays with underlay optimization (Service Level
   Agreements).


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-spring-srv6-network-programming=
/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-spring-srv6-network-programming-16
https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-network-progra=
mming-16

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-spring-srv6-network-programm=
ing-16


Please note that it may take a couple of minutes from the time of submissio=
n until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


_______________________________________________
spring mailing list
spring@ietf.org
https://www.ietf.org/mailman/listinfo/spring


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To: "Darren Dukes (ddukes)" <ddukes=40cisco.com@dmarc.ietf.org>, SPRING WG <spring@ietf.org>
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Subject: Re: [spring] New Version Notification for draft-dukes-spring-srv6-overhead-analysis-00.txt
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Darren,

Your draft purports to be an "SRv6 Network Programming Overhead Analysis". =
 As such, it should address overhead analysis and avoid:


  *   Topics that are orthogonal to overhead analysis
  *   The appearance of attempting to position one compression strategy ove=
r another for reasons other than overhead

So, I recommend that you make the following changes to Section 5:


  *   The sentence "The mapping proposal, [I-D.bonica-spring-sr-mapped-six]=
, does not bring any compression benefit compared to SRv6-native compressio=
n methods [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]" gives the appear=
ance of author bias. Please replaces it with a neutral sentence like, "The =
two  proposals [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc] [I-D.bonica-=
spring-sr-mapped-six] provide similar compression.
  *   You say that " The SRm6 proposal does have several deficiencies howev=
er, including:".... None of these have anything to do with overhead analysi=
s. They don't belong in this document.
  *   Also, many of the things that you say in that bullet list are blatant=
ly false. For example, SRm6 does not introduce a new data plane. In is extr=
emely orthodox IPv6.

                                                                           =
                                             Ron





Juniper Business Use Only
From: spring <spring-bounces@ietf.org> On Behalf Of Darren Dukes (ddukes)
Sent: Saturday, June 27, 2020 1:22 AM
To: SPRING WG <spring@ietf.org>
Subject: [spring] Fw: New Version Notification for draft-dukes-spring-srv6-=
overhead-analysis-00.txt

[External Email. Be cautious of content]

Hello SPRING working group

There has been lots of work done in SPRING to develop, combine and refine m=
ethods of reducing the overhead of the SRv6 SRH.  We have some good submiss=
ions of requirements, framework analysis but no direct comparisons of diffe=
rent methods.

This draft kicks off that conversation with a simple analysis comparing SRv=
6 native compression available via draft-filsfilscheng-spring-srv6-srh-comp=
-sl-enc vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.


Thanks
  Darren


________________________________
From: internet-drafts@ietf.org<mailto:internet-drafts@ietf.org> <internet-d=
rafts@ietf.org<mailto:internet-drafts@ietf.org>>
Sent: Saturday, June 27, 2020 1:00 AM
To: Darren Dukes (ddukes) <ddukes@cisco.com<mailto:ddukes@cisco.com>>
Subject: New Version Notification for draft-dukes-spring-srv6-overhead-anal=
ysis-00.txt


A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt
has been successfully submitted by Darren Dukes and posted to the
IETF repository.

Name:           draft-dukes-spring-srv6-overhead-analysis
Revision:       00
Title:          SRv6 Network Programming Overhead Analysis
Document date:  2020-06-27
Group:          Individual Submission
Pages:          9
URL:            https://www.ietf.org/internet-drafts/draft-dukes-spring-srv=
6-overhead-analysis-00.txt<https://urldefense.com/v3/__https:/www.ietf.org/=
internet-drafts/draft-dukes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yM=
aO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$>
Status:         https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-ov=
erhead-analysis/<https://urldefense.com/v3/__https:/datatracker.ietf.org/do=
c/draft-dukes-spring-srv6-overhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8=
ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjOMg93gm$>
Htmlized:       https://tools.ietf.org/html/draft-dukes-spring-srv6-overhea=
d-analysis-00<https://urldefense.com/v3/__https:/tools.ietf..org/html/draft=
-dukes-spring-srv6-overhead-analysis-00__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlk=
NqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjH9AbgoR$>
Htmlized:       https://datatracker.ietf.org/doc/html/draft-dukes-spring-sr=
v6-overhead-analysis<https://urldefense.com/v3/__https:/datatracker.ietf.or=
g/doc/html/draft-dukes-spring-srv6-overhead-analysis__;!!NEt6yMaO-gk!XQ30Nx=
g22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjOjtZl8r$>


Abstract:
   SRv6 network programming provides the framework for the best
   compression of an IPv6 header within an SR domain.  This document
   provides the analysis to illustrate this fact.


The IETF Secretariat

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</head>
<body lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">Darren,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Your draft purports to be an &#8220;SRv6 Network Pro=
gramming Overhead Analysis&#8221;. &nbsp;As such, it should address overhea=
d analysis and avoid:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l0 level1 =
lfo3">Topics that are orthogonal to overhead analysis<o:p></o:p></li><li cl=
ass=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l0 level1 lfo3">=
The appearance of attempting to position one compression strategy over anot=
her for reasons other than overhead<o:p></o:p></li></ul>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">So, I recommend that you make the following changes =
to Section 5:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l0 level1 =
lfo3">The sentence &#8220;The mapping proposal, [I-D.bonica-spring-sr-mappe=
d-six], does not bring any compression benefit compared to SRv6-native comp=
ression methods [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]&#8221;
 gives the appearance of author bias. Please replaces it with a neutral sen=
tence like, &#8220;The two &nbsp;proposals [I-D.filsfilscheng-spring-srv6-s=
rh-comp-sl-enc] [I-D.bonica-spring-sr-mapped-six] provide similar compressi=
on.<o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"margin-left:0in;=
mso-list:l0 level1 lfo3">You say that &#8221; The SRm6 proposal does have s=
everal deficiencies however, including:&#8221;&#8230;. None of these have a=
nything to do with overhead analysis. They don&#8217;t belong in this docum=
ent.<o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"margin-left:0in=
;mso-list:l0 level1 lfo3">Also, many of the things that you say in that bul=
let list are blatantly false. For example, SRm6 does not introduce a new da=
ta plane. In is extremely orthodox IPv6.
<o:p></o:p></li></ul>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ron<o:p></o:=
p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> spring &lt;spring-bounces@ietf.org&gt; =
<b>On Behalf Of
</b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Saturday, June 27, 2020 1:22 AM<br>
<b>To:</b> SPRING WG &lt;spring@ietf.org&gt;<br>
<b>Subject:</b> [spring] Fw: New Version Notification for draft-dukes-sprin=
g-srv6-overhead-analysis-00.txt<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b><=
span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;colo=
r:black">[External Email. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Hello S=
PRING working group<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">There h=
as been lots of work done in SPRING to develop, combine and refine methods =
of reducing the overhead of the SRv6 SRH. &nbsp;We have some good submissio=
ns of requirements, framework analysis but
 no direct comparisons of different methods.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">This dr=
aft kicks off that conversation with a simple analysis comparing SRv6 nativ=
e compression available via draft-filsfilscheng-spring-srv6-srh-comp-sl-enc=
&nbsp;vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.<o:p></=
o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Thanks<=
o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">&nbsp; =
Darren<o:p></o:p></span></p>
</div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><span style=3D"font-s=
ize:12.0pt;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"divRplyFwdMsg">
<p class=3D"MsoNormal"><b><span style=3D"color:black">From:</span></b><span=
 style=3D"color:black">
<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a> &l=
t;<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a>&=
gt;<br>
<b>Sent:</b> Saturday, June 27, 2020 1:00 AM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com">dd=
ukes@cisco.com</a>&gt;<br>
<b>Subject:</b> New Version Notification for draft-dukes-spring-srv6-overhe=
ad-analysis-00.txt</span>
<o:p></o:p></p>
<div>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><br>
A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt<br>
has been successfully submitted by Darren Dukes and posted to the<br>
IETF repository.<br>
<br>
Name:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; draft-duk=
es-spring-srv6-overhead-analysis<br>
Revision:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 00<br>
Title:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; SRv6 Network P=
rogramming Overhead Analysis<br>
Document date:&nbsp; 2020-06-27<br>
Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Individual Sub=
mission<br>
Pages:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9<br>
URL:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a h=
ref=3D"https://urldefense.com/v3/__https:/www.ietf.org/internet-drafts/draf=
t-dukes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8=
ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$">
https://www.ietf.org/internet-drafts/draft-dukes-spring-srv6-overhead-analy=
sis-00.txt</a><br>
Status:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://=
urldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-dukes-spring-srv6=
-overhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYk=
MVwpqxc8PEt_xKQSRjOMg93gm$">
https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-overhead-analysis/=
</a><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://urldefense=
.com/v3/__https:/tools.ietf..org/html/draft-dukes-spring-srv6-overhead-anal=
ysis-00__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_=
xKQSRjH9AbgoR$">
https://tools.ietf.org/html/draft-dukes-spring-srv6-overhead-analysis-00</a=
><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://urldefense=
.com/v3/__https:/datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-over=
head-analysis__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqx=
c8PEt_xKQSRjOjtZl8r$">
https://datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-anal=
ysis</a><br>
<br>
<br>
Abstract:<br>
&nbsp;&nbsp; SRv6 network programming provides the framework for the best<b=
r>
&nbsp;&nbsp; compression of an IPv6 header within an SR domain.&nbsp; This =
document<br>
&nbsp;&nbsp; provides the analysis to illustrate this fact.<br>
<br>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>
The IETF Secretariat<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</body>
</html>

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To: Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>
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Daren=20

As SRv6 has its inherent MSD issues right out of the gate and requires use o=
f a myriad of compression techniques to make SRv6 viable for long SR-TE stri=
ct paths.

Ref: List of competing solutions in SPRING
[1] https://datatracker.ietf.org/doc/draft-cl-spring-generalized-srv6-np/?in=
clude_text=3D1
[2] https://datatracker.ietf.org/doc/draft-li-spring-compressed-srv6-np/?inc=
lude_text=3D1
[3] https://datatracker.ietf.org/doc/draft-mirsky-6man-unified-id-sr/?includ=
e_text=3D1
[4] https://datatracker.ietf.org/doc/draft-decraene-spring-srv6-vlsid/
[5] https://datatracker.ietf.org/doc/draft-filsfils-spring-net-pgm-extension=
-srv6-usid/?include_text=3D1

In recent May timeframe an email came out below came claiming yet another ve=
rsion which takes two of the drafts above and generates a new version to hel=
p address the MSD pitfalls of SRv6 that failed to start right out of the gat=
e. =20

My thoughts are as an operator it would be good to have a draft that compare=
s and contrasts all of the SRv6 compression techniques and why this new one p=
roposed now is better then any of the others.

I am working on a draft that does exactly that as well as comparing the SRv6=
 compression techniques, it also digs into the weeds and compare from and de=
cision tree perspective pros and cons of Segment Routing flavors SR-MPLS, SR=
v6 and SRM6 and which makes sense for Greenfield  and Brownfield deployments=
. =20

Once I have the draft published I will be polling all the authors of the SRv=
6 compression drafts to dig into the detailed comparison of compression tech=
niques and why one should chosen over another.

Excerpt from email to Spring WG May timeframe:

Dear SPRING,

The authors of draft-filsfils-spring-net-pgm-extension-srv6-usid and draft-c=
l-spring-generalized-srv6-for-cmpr have been working together on a joint doc=
ument that describes how compressed SRv6 Segment-List encoding in the SRH ca=
n be achieved without any change to the SRv6 data plane or control plane. Th=
e new draft link is as follows:

https://www.ietf.org/internet-drafts/draft-filsfilscheng-spring-srv6-srh-com=
p-sl-enc-01.txt

In this draft, we leverage the notions of SIDfunction and argument defined i=
n draft-ietf-spring-srv6-network-programming to compress the SRv6Segment Lis=
t encoding in the SRH. The compressed encoding is achieved through two new f=
lavors of the base Network Programming behaviors (End, End.X and End.T), nam=
ed NEXT-C-SID and REPLACE-C-SID.

Sent from my iPhone

> On Jun 27, 2020, at 7:45 PM, Ron Bonica <rbonica=3D40juniper.net@dmarc.iet=
f.org> wrote:
>=20
> =EF=BB=BF
> Darren,
> =20
> Your draft purports to be an =E2=80=9CSRv6 Network Programming Overhead An=
alysis=E2=80=9D.  As such, it should address overhead analysis and avoid:
> =20
> Topics that are orthogonal to overhead analysis
> The appearance of attempting to position one compression strategy over ano=
ther for reasons other than overhead
> =20
> So, I recommend that you make the following changes to Section 5:
> =20
> The sentence =E2=80=9CThe mapping proposal, [I-D.bonica-spring-sr-mapped-s=
ix], does not bring any compression benefit compared to SRv6-native compress=
ion methods [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]=E2=80=9D gives t=
he appearance of author bias. Please replaces it with a neutral sentence lik=
e, =E2=80=9CThe two  proposals [I-D.filsfilscheng-spring-srv6-srh-comp-sl-en=
c] [I-D.bonica-spring-sr-mapped-six] provide similar compression.
> You say that =E2=80=9D The SRm6 proposal does have several deficiencies ho=
wever, including:=E2=80=9D=E2=80=A6. None of these have anything to do with o=
verhead analysis. They don=E2=80=99t belong in this document.
> Also, many of the things that you say in that bullet list are blatantly fa=
lse. For example, SRm6 does not introduce a new data plane. In is extremely o=
rthodox IPv6.
> =20
>                                                                           =
                                              Ron
> =20
> =20
> =20
> =20
> Juniper Business Use Only
> From: spring <spring-bounces@ietf.org> On Behalf Of Darren Dukes (ddukes)
> Sent: Saturday, June 27, 2020 1:22 AM
> To: SPRING WG <spring@ietf.org>
> Subject: [spring] Fw: New Version Notification for draft-dukes-spring-srv6=
-overhead-analysis-00.txt
> =20
> [External Email. Be cautious of content]
> =20
> Hello SPRING working group
> =20
> There has been lots of work done in SPRING to develop, combine and refine m=
ethods of reducing the overhead of the SRv6 SRH.  We have some good submissi=
ons of requirements, framework analysis but no direct comparisons of differe=
nt methods.
> =20
> This draft kicks off that conversation with a simple analysis comparing SR=
v6 native compression available via draft-filsfilscheng-spring-srv6-srh-comp=
-sl-enc vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.
> =20
> =20
> Thanks
>   Darren
> =20
>=20
> =20
> From: internet-drafts@ietf.org <internet-drafts@ietf.org>
> Sent: Saturday, June 27, 2020 1:00 AM
> To: Darren Dukes (ddukes) <ddukes@cisco.com>
> Subject: New Version Notification for draft-dukes-spring-srv6-overhead-ana=
lysis-00.txt
> =20
>=20
> A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt
> has been successfully submitted by Darren Dukes and posted to the
> IETF repository.
>=20
> Name:           draft-dukes-spring-srv6-overhead-analysis
> Revision:       00
> Title:          SRv6 Network Programming Overhead Analysis
> Document date:  2020-06-27
> Group:          Individual Submission
> Pages:          9
> URL:            https://www.ietf.org/internet-drafts/draft-dukes-spring-sr=
v6-overhead-analysis-00.txt
> Status:         https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-o=
verhead-analysis/
> Htmlized:       https://tools.ietf.org/html/draft-dukes-spring-srv6-overhe=
ad-analysis-00
> Htmlized:       https://datatracker.ietf.org/doc/html/draft-dukes-spring-s=
rv6-overhead-analysis
>=20
>=20
> Abstract:
>    SRv6 network programming provides the framework for the best
>    compression of an IPv6 header within an SR domain.  This document
>    provides the analysis to illustrate this fact.
>=20
>                                                                           =
     =20
> The IETF Secretariat
>=20
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div><br></div>Daren&nbsp;<div><br></div><d=
iv>As SRv6 has its inherent MSD issues right out of the gate and requires us=
e of a myriad of compression techniques to make SRv6 viable for long SR-TE s=
trict paths.</div><div><br></div><div><p class=3D"MsoNormal" style=3D"font-s=
ize: 16px; -webkit-text-size-adjust: auto; caret-color: rgb(49, 49, 49); wor=
d-spacing: 1px; font-family: -apple-system, HelveticaNeue; border-color: rgb=
(49, 49, 49); color: rgb(49, 49, 49);"><b data-originalfontsize=3D"1rem" dat=
a-originalcomputedfontsize=3D"16" style=3D"font-size: 1rem; border-color: rg=
b(49, 49, 49);">Ref: List of competing solutions in SPRING<u style=3D"border=
-color: rgb(49, 49, 49);"></u><u style=3D"border-color: rgb(49, 49, 49);"></=
u></b></p><p class=3D"MsoNormal" data-originalfontsize=3D"1rem" data-origina=
lcomputedfontsize=3D"16" style=3D"font-size: 1rem; -webkit-text-size-adjust:=
 auto; caret-color: rgb(49, 49, 49); word-spacing: 1px; font-family: -apple-=
system, HelveticaNeue; border-color: rgb(49, 49, 49); color: rgb(49, 49, 49)=
;">[1]&nbsp;<a href=3D"https://datatracker.ietf.org/doc/draft-cl-spring-gene=
ralized-srv6-np/?include_text=3D1" target=3D"_blank" data-saferedirecturl=3D=
"https://www.google.com/url?q=3Dhttps://datatracker.ietf.org/doc/draft-cl-sp=
ring-generalized-srv6-np/?include_text%3D1&amp;source=3Dgmail&amp;ust=3D1593=
392211134000&amp;usg=3DAFQjCNEAsyZXT0Pv29lPHO0oYch24wX2uA" data-originalfont=
size=3D"1rem" data-originalcomputedfontsize=3D"16" style=3D"font-size: 1rem;=
 border-color: rgb(66, 133, 244); color: rgb(66, 133, 244);">https://datatra=
cker.ietf.<wbr style=3D"border-color: rgb(66, 133, 244);">org/doc/<span clas=
s=3D"term-highlighted" style=3D"background-color: rgba(253, 239, 193, 0.5);"=
>draft</span>-cl-spring-<wbr style=3D"border-color: rgb(66, 133, 244);">gene=
ralized-<span class=3D"term-highlighted" style=3D"background-color: rgba(253=
, 239, 193, 0.5);">srv6</span>-np/?include_<wbr style=3D"border-color: rgb(6=
6, 133, 244);">text=3D1</a><u style=3D"border-color: rgb(49, 49, 49);"></u><=
u style=3D"border-color: rgb(49, 49, 49);"></u></p><p class=3D"MsoNormal" da=
ta-originalfontsize=3D"1rem" data-originalcomputedfontsize=3D"16" style=3D"f=
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; word-spacing: 1px; font-family: -apple-system, HelveticaNeue; border-color=
: rgb(49, 49, 49); color: rgb(49, 49, 49);">[2]&nbsp;<a href=3D"https://data=
tracker.ietf.org/doc/draft-li-spring-compressed-srv6-np/?include_text=3D1" t=
arget=3D"_blank" data-saferedirecturl=3D"https://www.google.com/url?q=3Dhttp=
s://datatracker.ietf.org/doc/draft-li-spring-compressed-srv6-np/?include_tex=
t%3D1&amp;source=3Dgmail&amp;ust=3D1593392211134000&amp;usg=3DAFQjCNGXva3YD8=
soFQ483oVYP4htFqORSg" data-originalfontsize=3D"1rem" data-originalcomputedfo=
ntsize=3D"16" style=3D"font-size: 1rem; border-color: rgb(66, 133, 244); col=
or: rgb(66, 133, 244);">https://datatracker.ietf.<wbr style=3D"border-color:=
 rgb(66, 133, 244);">org/doc/<span class=3D"term-highlighted" style=3D"backg=
round-color: rgba(253, 239, 193, 0.5);">draft</span>-li-spring-<wbr style=3D=
"border-color: rgb(66, 133, 244);"><span class=3D"term-highlighted" style=3D=
"background-color: rgba(253, 239, 193, 0.5);">compressed</span>-<span class=3D=
"term-highlighted" style=3D"background-color: rgba(253, 239, 193, 0.5);">srv=
6</span>-np/?include_<wbr style=3D"border-color: rgb(66, 133, 244);">text=3D=
1</a><u style=3D"border-color: rgb(49, 49, 49);"></u><u style=3D"border-colo=
r: rgb(49, 49, 49);"></u></p><p class=3D"MsoNormal" data-originalfontsize=3D=
"1rem" data-originalcomputedfontsize=3D"16" style=3D"font-size: 1rem; -webki=
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ont-family: -apple-system, HelveticaNeue; border-color: rgb(49, 49, 49); col=
or: rgb(49, 49, 49);">[3]&nbsp;<a href=3D"https://datatracker.ietf.org/doc/d=
raft-mirsky-6man-unified-id-sr/?include_text=3D1" target=3D"_blank" data-saf=
eredirecturl=3D"https://www.google.com/url?q=3Dhttps://datatracker.ietf.org/=
doc/draft-mirsky-6man-unified-id-sr/?include_text%3D1&amp;source=3Dgmail&amp=
;ust=3D1593392211134000&amp;usg=3DAFQjCNF9VQY286lvsnpM5rVexOj3I97JyQ" data-o=
riginalfontsize=3D"1rem" data-originalcomputedfontsize=3D"16" style=3D"font-=
size: 1rem; border-color: rgb(66, 133, 244); color: rgb(66, 133, 244);">http=
s://datatracker.ietf.<wbr style=3D"border-color: rgb(66, 133, 244);">org/doc=
/<span class=3D"term-highlighted" style=3D"background-color: rgba(253, 239, 1=
93, 0.5);">draft</span>-mirsky-6man-<wbr style=3D"border-color: rgb(66, 133,=
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gb(49, 49, 49); word-spacing: 1px; font-family: -apple-system, HelveticaNeue=
; border-color: rgb(49, 49, 49); color: rgb(49, 49, 49);">[4]&nbsp;<a href=3D=
"https://datatracker.ietf.org/doc/draft-decraene-spring-srv6-vlsid/" target=3D=
"_blank" data-saferedirecturl=3D"https://www.google.com/url?q=3Dhttps://data=
tracker.ietf.org/doc/draft-decraene-spring-srv6-vlsid/&amp;source=3Dgmail&am=
p;ust=3D1593392211134000&amp;usg=3DAFQjCNEMgerjX6OvImzLbazCb8kYl24SBg" data-=
originalfontsize=3D"1rem" data-originalcomputedfontsize=3D"16" style=3D"font=
-size: 1rem; border-color: rgb(66, 133, 244); color: rgb(66, 133, 244);">htt=
ps://datatracker.ietf.<wbr style=3D"border-color: rgb(66, 133, 244);">org/do=
c/<span class=3D"term-highlighted" style=3D"background-color: rgba(253, 239,=
 193, 0.5);">draft</span>-decraene-spring-<wbr style=3D"border-color: rgb(66=
, 133, 244);"><span class=3D"term-highlighted" style=3D"background-color: rg=
ba(253, 239, 193, 0.5);">srv6</span>-vlsid/</a><u style=3D"border-color: rgb=
(49, 49, 49);"></u><u style=3D"border-color: rgb(49, 49, 49);"></u></p><p cl=
ass=3D"MsoNormal" data-originalfontsize=3D"1rem" data-originalcomputedfontsi=
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lor: rgb(49, 49, 49); word-spacing: 1px; font-family: -apple-system, Helveti=
caNeue; border-color: rgb(49, 49, 49); color: rgb(49, 49, 49);">[5]&nbsp;<a h=
ref=3D"https://datatracker.ietf.org/doc/draft-filsfils-spring-net-pgm-extens=
ion-srv6-usid/?include_text=3D1" target=3D"_blank" data-saferedirecturl=3D"h=
ttps://www.google.com/url?q=3Dhttps://datatracker.ietf.org/doc/draft-filsfil=
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c/<span class=3D"term-highlighted" style=3D"background-color: rgba(253, 239,=
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t: auto; caret-color: rgb(49, 49, 49); word-spacing: 1px; font-family: -appl=
e-system, HelveticaNeue; border-color: rgb(49, 49, 49); color: rgb(49, 49, 4=
9);"><br></p><p class=3D"MsoNormal" data-originalfontsize=3D"1rem" data-orig=
inalcomputedfontsize=3D"16" style=3D"font-size: 1rem; -webkit-text-size-adju=
st: auto; caret-color: rgb(49, 49, 49); word-spacing: 1px; font-family: -app=
le-system, HelveticaNeue; border-color: rgb(49, 49, 49); color: rgb(49, 49, 4=
9);">In recent May timeframe an email came out below came claiming yet anoth=
er version which takes two of the drafts above and generates a new version t=
o help address the MSD pitfalls of SRv6 that failed to start right out of th=
e gate. &nbsp;</p><p class=3D"MsoNormal" data-originalfontsize=3D"1rem" data=
-originalcomputedfontsize=3D"16" style=3D"font-size: 1rem; -webkit-text-size=
-adjust: auto; caret-color: rgb(49, 49, 49); word-spacing: 1px; font-family:=
 -apple-system, HelveticaNeue; border-color: rgb(49, 49, 49); color: rgb(49,=
 49, 49);"><br></p><p class=3D"MsoNormal" data-originalfontsize=3D"1rem" dat=
a-originalcomputedfontsize=3D"16" style=3D"font-size: 1rem; -webkit-text-siz=
e-adjust: auto; caret-color: rgb(49, 49, 49); word-spacing: 1px; font-family=
: -apple-system, HelveticaNeue; border-color: rgb(49, 49, 49); color: rgb(49=
, 49, 49);">My thoughts are as an operator it would be good to have a draft t=
hat compares and contrasts all of the SRv6 compression techniques and why th=
is new one proposed now is better then any of the others.</p><p class=3D"Mso=
Normal" data-originalfontsize=3D"1rem" data-originalcomputedfontsize=3D"16" s=
tyle=3D"font-size: 1rem; -webkit-text-size-adjust: auto; caret-color: rgb(49=
, 49, 49); word-spacing: 1px; font-family: -apple-system, HelveticaNeue; bor=
der-color: rgb(49, 49, 49); color: rgb(49, 49, 49);"><br></p><p class=3D"Mso=
Normal" data-originalfontsize=3D"1rem" data-originalcomputedfontsize=3D"16" s=
tyle=3D"font-size: 1rem; -webkit-text-size-adjust: auto; caret-color: rgb(49=
, 49, 49); word-spacing: 1px; font-family: -apple-system, HelveticaNeue; bor=
der-color: rgb(49, 49, 49); color: rgb(49, 49, 49);">I am working on a draft=
 that does exactly that as well as comparing the SRv6 compression techniques=
,&nbsp;<span style=3D"font-size: 1rem;">it also digs into the weeds and comp=
are from and decision tree perspective pros and cons of Segment Routing flav=
ors SR-MPLS, SRv6 and SRM6 and which makes sense for Greenfield &nbsp;and Br=
ownfield deployments. &nbsp;</span></p><p class=3D"MsoNormal" data-originalf=
ontsize=3D"1rem" data-originalcomputedfontsize=3D"16" style=3D"font-size: 1r=
em; -webkit-text-size-adjust: auto; caret-color: rgb(49, 49, 49); word-spaci=
ng: 1px; font-family: -apple-system, HelveticaNeue; border-color: rgb(49, 49=
, 49); color: rgb(49, 49, 49);"><span style=3D"font-size: 1rem;"><br></span>=
</p><p class=3D"MsoNormal" data-originalfontsize=3D"1rem" data-originalcompu=
tedfontsize=3D"16" style=3D"font-size: 1rem; -webkit-text-size-adjust: auto;=
 caret-color: rgb(49, 49, 49); word-spacing: 1px; font-family: -apple-system=
, HelveticaNeue; border-color: rgb(49, 49, 49); color: rgb(49, 49, 49);"><sp=
an style=3D"font-size: 1rem;">Once I have the draft published I will be poll=
ing all the authors of the SRv6 compression drafts to dig into the detailed c=
omparison of compression techniques and why one should chosen over another.<=
/span></p><p class=3D"MsoNormal" data-originalfontsize=3D"1rem" data-origina=
lcomputedfontsize=3D"16" style=3D"font-size: 1rem; -webkit-text-size-adjust:=
 auto; caret-color: rgb(49, 49, 49); word-spacing: 1px; font-family: -apple-=
system, HelveticaNeue; border-color: rgb(49, 49, 49); color: rgb(49, 49, 49)=
;"><br></p><p class=3D"MsoNormal" data-originalfontsize=3D"1rem" data-origin=
alcomputedfontsize=3D"16" style=3D"font-size: 1rem; -webkit-text-size-adjust=
: auto; caret-color: rgb(49, 49, 49); word-spacing: 1px; font-family: -apple=
-system, HelveticaNeue; border-color: rgb(49, 49, 49); color: rgb(49, 49, 49=
);">Excerpt from email to Spring WG May timeframe:</p><p class=3D"MsoNormal"=
 data-originalfontsize=3D"1rem" data-originalcomputedfontsize=3D"16" style=3D=
"font-size: 1rem; -webkit-text-size-adjust: auto; caret-color: rgb(49, 49, 4=
9); word-spacing: 1px; font-family: -apple-system, HelveticaNeue; border-col=
or: rgb(49, 49, 49); color: rgb(49, 49, 49);"><br></p><p class=3D"MsoNormal"=
 data-originalfontsize=3D"1rem" data-originalcomputedfontsize=3D"16" style=3D=
"font-size: 1rem; -webkit-text-size-adjust: auto; caret-color: rgb(49, 49, 4=
9); word-spacing: 1px; font-family: -apple-system, HelveticaNeue; border-col=
or: rgb(49, 49, 49); color: rgb(49, 49, 49);"><span data-removefontsize=3D"t=
rue" data-originalcomputedfontsize=3D"16" style=3D"font-size: 1rem; border-c=
olor: rgb(49, 49, 49);">Dear SPRING,</span><br><br><span data-removefontsize=
=3D"true" data-originalcomputedfontsize=3D"16" style=3D"font-size: 1rem; bor=
der-color: rgb(49, 49, 49);">The authors of&nbsp;<span class=3D"term-highlig=
hted" style=3D"background-color: rgba(253, 239, 193, 0.5);">draft</span>-fil=
sfils-spring-net-pgm-</span><span data-removefontsize=3D"true" data-original=
computedfontsize=3D"16" style=3D"font-size: 1rem; border-color: rgb(49, 49, 4=
9);"><wbr style=3D"border-color: rgb(49, 49, 49);">extension-<span class=3D"=
term-highlighted" style=3D"background-color: rgba(253, 239, 193, 0.5);">srv6=
</span>-</span><span data-removefontsize=3D"true" data-originalcomputedfonts=
ize=3D"16" style=3D"font-size: 1rem; background-color: rgba(253, 239, 193, 0=
.5); border-color: rgb(49, 49, 49);">usid</span><span data-removefontsize=3D=
"true" data-originalcomputedfontsize=3D"16" style=3D"font-size: 1rem; border=
-color: rgb(49, 49, 49);">&nbsp;and&nbsp;<span class=3D"term-highlighted" st=
yle=3D"background-color: rgba(253, 239, 193, 0.5);">draft</span>-cl-spring-g=
eneralized-sr</span><span data-removefontsize=3D"true" data-originalcomputed=
fontsize=3D"16" style=3D"font-size: 1rem; border-color: rgb(49, 49, 49);"><w=
br style=3D"border-color: rgb(49, 49, 49);">v6-for-cmpr have been working to=
gether on a joint document that describes how&nbsp;<span class=3D"term-highl=
ighted" style=3D"background-color: rgba(253, 239, 193, 0.5);">compressed</sp=
an>&nbsp;<span class=3D"term-highlighted" style=3D"background-color: rgba(25=
3, 239, 193, 0.5);">SRv6</span>&nbsp;Segment-List encoding in the SRH can be=
 achieved without any change to the&nbsp;<span class=3D"term-highlighted" st=
yle=3D"background-color: rgba(253, 239, 193, 0.5);">SRv6</span>&nbsp;data pl=
ane or control plane. The new&nbsp;<span class=3D"term-highlighted" style=3D=
"background-color: rgba(253, 239, 193, 0.5);">draft</span>&nbsp;link is as f=
ollows:</span><br><br><a href=3D"https://www.ietf.org/internet-drafts/draft-=
filsfilscheng-spring-srv6-srh-comp-sl-enc-01.txt" rel=3D"noreferrer" target=3D=
"_blank" data-saferedirecturl=3D"https://www.google.com/url?q=3Dhttps://www.=
ietf.org/internet-drafts/draft-filsfilscheng-spring-srv6-srh-comp-sl-enc-01.=
txt&amp;source=3Dgmail&amp;ust=3D1593392211140000&amp;usg=3DAFQjCNHKeawjlcLk=
QISguj1IwbJbOm-fng" data-originalfontsize=3D"1rem" data-originalcomputedfont=
size=3D"16" style=3D"font-size: 1rem; border-color: rgb(66, 133, 244); color=
: rgb(66, 133, 244);">https://www.ietf.org/internet-<wbr style=3D"border-col=
or: rgb(66, 133, 244);"><span class=3D"term-highlighted" style=3D"background=
-color: rgba(253, 239, 193, 0.5);">drafts</span>/<span class=3D"term-highlig=
hted" style=3D"background-color: rgba(253, 239, 193, 0.5);">draft</span>-fil=
sfilscheng-<wbr style=3D"border-color: rgb(66, 133, 244);">spring-<span clas=
s=3D"term-highlighted" style=3D"background-color: rgba(253, 239, 193, 0.5);"=
>srv6</span>-srh-comp-sl-enc-<wbr style=3D"border-color: rgb(66, 133, 244);"=
>01.txt</a><br><br><span data-removefontsize=3D"true" data-originalcomputedf=
ontsize=3D"16" style=3D"font-size: 1rem; border-color: rgb(49, 49, 49);">In t=
his&nbsp;<span class=3D"term-highlighted" style=3D"background-color: rgba(25=
3, 239, 193, 0.5);">draft</span>, we leverage the notions of&nbsp;<span clas=
s=3D"term-highlighted" style=3D"background-color: rgba(253, 239, 193, 0.5);"=
>SID</span>function and argument defined in&nbsp;<span class=3D"term-highlig=
hted" style=3D"background-color: rgba(253, 239, 193, 0.5);">draft</span>-iet=
f-spring-<span class=3D"term-highlighted" style=3D"background-color: rgba(25=
3, 239, 193, 0.5);">srv6</span>-network</span><span data-removefontsize=3D"t=
rue" data-originalcomputedfontsize=3D"16" style=3D"font-size: 1rem; border-c=
olor: rgb(49, 49, 49);"><wbr style=3D"border-color: rgb(49, 49, 49);">-progr=
amming to&nbsp;<span class=3D"term-highlighted" style=3D"background-color: r=
gba(253, 239, 193, 0.5);">compress</span>&nbsp;the&nbsp;<span class=3D"term-=
highlighted" style=3D"background-color: rgba(253, 239, 193, 0.5);">SRv6</spa=
n>Segment List encoding in the SRH. The&nbsp;<span class=3D"term-highlighted=
" style=3D"background-color: rgba(253, 239, 193, 0.5);">compressed</span>&nb=
sp;encoding is achieved through two new flavors of the base Network Programm=
ing behaviors (End, End.X and End.T), named NEXT-C-<span class=3D"term-highl=
ighted" style=3D"background-color: rgba(253, 239, 193, 0.5);">SID</span>&nbs=
p;and REPLACE-C-<span class=3D"term-highlighted" style=3D"background-color: r=
gba(253, 239, 193, 0.5);">SID</span>.</span></p><br><div dir=3D"ltr">Sent fr=
om my iPhone</div><div dir=3D"ltr"><br><blockquote type=3D"cite">On Jun 27, 2=
020, at 7:45 PM, Ron Bonica &lt;rbonica=3D40juniper.net@dmarc.ietf.org&gt; w=
rote:<br><br></blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=
=BB=BF

<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii">=

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<div class=3D"WordSection1">
<p class=3D"MsoNormal">Darren,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Your draft purports to be an =E2=80=9CSRv6 Network Pr=
ogramming Overhead Analysis=E2=80=9D. &nbsp;As such, it should address overh=
ead analysis and avoid:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l0 level1 l=
fo3">Topics that are orthogonal to overhead analysis<o:p></o:p></li><li clas=
s=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l0 level1 lfo3">The=
 appearance of attempting to position one compression strategy over another f=
or reasons other than overhead<o:p></o:p></li></ul>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">So, I recommend that you make the following changes t=
o Section 5:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l0 level1 l=
fo3">The sentence =E2=80=9CThe mapping proposal, [I-D.bonica-spring-sr-mappe=
d-six], does not bring any compression benefit compared to SRv6-native compr=
ession methods [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]=E2=80=9D
 gives the appearance of author bias. Please replaces it with a neutral sent=
ence like, =E2=80=9CThe two &nbsp;proposals [I-D.filsfilscheng-spring-srv6-s=
rh-comp-sl-enc] [I-D.bonica-spring-sr-mapped-six] provide similar compressio=
n.<o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"margin-left:0in;ms=
o-list:l0 level1 lfo3">You say that =E2=80=9D The SRm6 proposal does have se=
veral deficiencies however, including:=E2=80=9D=E2=80=A6. None of these have=
 anything to do with overhead analysis. They don=E2=80=99t belong in this do=
cument.<o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"margin-left:0=
in;mso-list:l0 level1 lfo3">Also, many of the things that you say in that bu=
llet list are blatantly false. For example, SRm6 does not introduce a new da=
ta plane. In is extremely orthodox IPv6.
<o:p></o:p></li></ul>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ron<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin-=
bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span>=
<o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0=
in 0in">
<p class=3D"MsoNormal"><b>From:</b> spring &lt;spring-bounces@ietf.org&gt; <=
b>On Behalf Of
</b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Saturday, June 27, 2020 1:22 AM<br>
<b>To:</b> SPRING WG &lt;spring@ietf.org&gt;<br>
<b>Subject:</b> [spring] Fw: New Version Notification for draft-dukes-spring=
-srv6-overhead-analysis-00.txt<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b><s=
pan style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;color:=
black">[External Email. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Hello SP=
RING working group<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&nb=
sp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">There ha=
s been lots of work done in SPRING to develop, combine and refine methods of=
 reducing the overhead of the SRv6 SRH. &nbsp;We have some good submissions o=
f requirements, framework analysis but
 no direct comparisons of different methods.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&nb=
sp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">This dra=
ft kicks off that conversation with a simple analysis comparing SRv6 native c=
ompression available via draft-filsfilscheng-spring-srv6-srh-comp-sl-enc&nbs=
p;vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.<o:p></o:p><=
/span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&nb=
sp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&nb=
sp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Thanks<o=
:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">&nbsp; D=
arren<o:p></o:p></span></p>
</div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><span style=3D"font-si=
ze:12.0pt;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&nb=
sp;</o:p></span></p>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"divRplyFwdMsg">
<p class=3D"MsoNormal"><b><span style=3D"color:black">From:</span></b><span s=
tyle=3D"color:black">
<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a> &lt=
;<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a>&gt=
;<br>
<b>Sent:</b> Saturday, June 27, 2020 1:00 AM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com">ddu=
kes@cisco.com</a>&gt;<br>
<b>Subject:</b> New Version Notification for draft-dukes-spring-srv6-overhea=
d-analysis-00.txt</span>
<o:p></o:p></p>
<div>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><br>
A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt<br>
has been successfully submitted by Darren Dukes and posted to the<br>
IETF repository.<br>
<br>
Name:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; draft-duke=
s-spring-srv6-overhead-analysis<br>
Revision:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 00<br>
Title:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; SRv6 Network Pr=
ogramming Overhead Analysis<br>
Document date:&nbsp; 2020-06-27<br>
Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Individual Subm=
ission<br>
Pages:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9<br>
URL:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a hr=
ef=3D"https://urldefense.com/v3/__https:/www.ietf.org/internet-drafts/draft-=
dukes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikw=
lkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$">
https://www.ietf.org/internet-drafts/draft-dukes-spring-srv6-overhead-analys=
is-00.txt</a><br>
Status:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://u=
rldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-dukes-spring-srv6-o=
verhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVw=
pqxc8PEt_xKQSRjOMg93gm$">
https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-overhead-analysis/<=
/a><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://urldefense.=
.com/v3/__https:/tools.ietf..org/html/draft-dukes-spring-srv6-overhead-analy=
sis-00__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xK=
QSRjH9AbgoR$">
https://tools.ietf.org/html/draft-dukes-spring-srv6-overhead-analysis-00</a>=
<br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://urldefense.=
.com/v3/__https:/datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overh=
ead-analysis__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8=
PEt_xKQSRjOjtZl8r$">
https://datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-analy=
sis</a><br>
<br>
<br>
Abstract:<br>
&nbsp;&nbsp; SRv6 network programming provides the framework for the best<br=
>
&nbsp;&nbsp; compression of an IPv6 header within an SR domain.&nbsp; This d=
ocument<br>
&nbsp;&nbsp; provides the analysis to illustrate this fact.<br>
<br>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>
The IETF Secretariat<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>


<span>_______________________________________________</span><br><span>spring=
 mailing list</span><br><span>spring@ietf.org</span><br><span>https://www.ie=
tf.org/mailman/listinfo/spring</span><br></div></blockquote></div></body></h=
tml>=

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Date: Sat, 27 Jun 2020 21:25:24 -0400
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Cc: "Darren Dukes (ddukes)" <ddukes=40cisco.com@dmarc.ietf.org>, SPRING WG <spring@ietf.org>
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Darren

The SR flavor and SRv6 compression comparison draft I am planning to
publish soon is a from a =E2=80=9Cneutral=E2=80=9D party myself as an opera=
tor versus
vendor bias having vendor affiliation.

I would like this document to gain traction with Spring and WG adoption as
it being =E2=80=9CNeutral=E2=80=9D it benefit all both operators as well as=
 vendors alike.

I would like to get all the nitty gritty meat deep dive behind the
technical merit of each SRv6 compression technique.  This draft I am
proposing as well will help maybe either come to a consensus that one
drafts compression technique is the one Spring WG has decided to back and
has WG concerns over other compression techniques.  And maybe might be the
case that all have their merit and all the compression techniques gain WG
adoption and as they all have their pluses and minuses and at that point we
would let the industry decide which gains traction in a real world
deployments.

Kind Regards

Gyan

On Sat, Jun 27, 2020 at 9:13 PM Gyan Mishra <hayabusagsm@gmail.com> wrote:

>
> Daren
>
> As SRv6 has its inherent MSD issues right out of the gate and requires us=
e
> of a myriad of compression techniques to make SRv6 viable for long SR-TE
> strict paths.
>
> *Ref: List of competing solutions in SPRING*
>
> [1] https://datatracker.ietf.org/doc/draft-cl-spring-generalized-srv6
> -np/?include_text=3D1
>
> [2] https://datatracker.ietf.org/doc/draft-li-spring-compressed-srv6
> -np/?include_text=3D1
>
> [3] https://datatracker.ietf.org/doc/draft
> -mirsky-6man-unified-id-sr/?include_text=3D1
>
> [4] https://datatracker.ietf.org/doc/draft-decraene-spring-srv6-vlsid/
>
> [5] https://datatracker.ietf.org/doc/draft
> -filsfils-spring-net-pgm-extension-srv6-usid/?include_text=3D1
>
>
> In recent May timeframe an email came out below came claiming yet another
> version which takes two of the drafts above and generates a new version t=
o
> help address the MSD pitfalls of SRv6 that failed to start right out of t=
he
> gate.
>
>
> My thoughts are as an operator it would be good to have a draft that
> compares and contrasts all of the SRv6 compression techniques and why thi=
s
> new one proposed now is better then any of the others.
>
>
> I am working on a draft that does exactly that as well as comparing the
> SRv6 compression techniques, it also digs into the weeds and compare from
> and decision tree perspective pros and cons of Segment Routing flavors
> SR-MPLS, SRv6 and SRM6 and which makes sense for Greenfield  and Brownfie=
ld
> deployments.
>
>
> Once I have the draft published I will be polling all the authors of the
> SRv6 compression drafts to dig into the detailed comparison of compressio=
n
> techniques and why one should chosen over another.
>
>
> Excerpt from email to Spring WG May timeframe:
>
>
> Dear SPRING,
>
> The authors of draft-filsfils-spring-net-pgm-extension-srv6-usid and draf=
t
> -cl-spring-generalized-srv6-for-cmpr have been working together on a
> joint document that describes how compressed SRv6 Segment-List encoding
> in the SRH can be achieved without any change to the SRv6 data plane or
> control plane. The new draft link is as follows:
>
> https://www.ietf.org/internet-drafts/draft-filsfilscheng-spring-srv6
> -srh-comp-sl-enc-01.txt
>
> In this draft, we leverage the notions of SIDfunction and argument
> defined in draft-ietf-spring-srv6-network-programming to compress the SRv=
6Segment
> List encoding in the SRH. The compressed encoding is achieved through two
> new flavors of the base Network Programming behaviors (End, End.X and
> End.T), named NEXT-C-SID and REPLACE-C-SID.
>
> Sent from my iPhone
>
> On Jun 27, 2020, at 7:45 PM, Ron Bonica <rbonica=3D
> 40juniper.net@dmarc.ietf.org> wrote:
>
> =EF=BB=BF
>
> Darren,
>
>
>
> Your draft purports to be an =E2=80=9CSRv6 Network Programming Overhead
> Analysis=E2=80=9D.  As such, it should address overhead analysis and avoi=
d:
>
>
>
>    - Topics that are orthogonal to overhead analysis
>    - The appearance of attempting to position one compression strategy
>    over another for reasons other than overhead
>
>
>
> So, I recommend that you make the following changes to Section 5:
>
>
>
>    - The sentence =E2=80=9CThe mapping proposal,
>    [I-D.bonica-spring-sr-mapped-six], does not bring any compression bene=
fit
>    compared to SRv6-native compression methods
>    [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]=E2=80=9D gives the app=
earance of
>    author bias. Please replaces it with a neutral sentence like, =E2=80=
=9CThe two
>     proposals [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]
>    [I-D.bonica-spring-sr-mapped-six] provide similar compression.
>    - You say that =E2=80=9D The SRm6 proposal does have several deficienc=
ies
>    however, including:=E2=80=9D=E2=80=A6. None of these have anything to =
do with overhead
>    analysis. They don=E2=80=99t belong in this document.
>    - Also, many of the things that you say in that bullet list are
>    blatantly false. For example, SRm6 does not introduce a new data plane=
. In
>    is extremely orthodox IPv6.
>
>
>
>
>         Ron
>
>
>
>
>
>
>
>
>
> Juniper Business Use Only
>
> *From:* spring <spring-bounces@ietf.org> *On Behalf Of *Darren Dukes
> (ddukes)
> *Sent:* Saturday, June 27, 2020 1:22 AM
> *To:* SPRING WG <spring@ietf.org>
> *Subject:* [spring] Fw: New Version Notification for
> draft-dukes-spring-srv6-overhead-analysis-00.txt
>
>
>
> *[External Email. Be cautious of content]*
>
>
>
> Hello SPRING working group
>
>
>
> There has been lots of work done in SPRING to develop, combine and refine
> methods of reducing the overhead of the SRv6 SRH.  We have some good
> submissions of requirements, framework analysis but no direct comparisons
> of different methods.
>
>
>
> This draft kicks off that conversation with a simple analysis comparing
> SRv6 native compression available via
> draft-filsfilscheng-spring-srv6-srh-comp-sl-enc vs the mapped SRm6 propos=
al
> draft-bonica-spring-sr-mapped-six.
>
>
>
>
>
> Thanks
>
>   Darren
>
>
>
>
> ------------------------------
>
> *From:* internet-drafts@ietf.org <internet-drafts@ietf.org>
> *Sent:* Saturday, June 27, 2020 1:00 AM
> *To:* Darren Dukes (ddukes) <ddukes@cisco.com>
> *Subject:* New Version Notification for
> draft-dukes-spring-srv6-overhead-analysis-00.txt
>
>
>
>
> A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt
> has been successfully submitted by Darren Dukes and posted to the
> IETF repository.
>
> Name:           draft-dukes-spring-srv6-overhead-analysis
> Revision:       00
> Title:          SRv6 Network Programming Overhead Analysis
> Document date:  2020-06-27
> Group:          Individual Submission
> Pages:          9
> URL:
> https://www.ietf.org/internet-drafts/draft-dukes-spring-srv6-overhead-ana=
lysis-00.txt
> <https://urldefense.com/v3/__https:/www.ietf.org/internet-drafts/draft-du=
kes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwl=
kNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$>
> Status:
> https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-overhead-analysi=
s/
> <https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-dukes-=
spring-srv6-overhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBj=
F4IixztGJYkMVwpqxc8PEt_xKQSRjOMg93gm$>
> Htmlized:
> https://tools.ietf.org/html/draft-dukes-spring-srv6-overhead-analysis-00
> <https://urldefense..com/v3/__https:/tools.ietf..org/html/draft-dukes-spr=
ing-srv6-overhead-analysis-00__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF=
4IixztGJYkMVwpqxc8PEt_xKQSRjH9AbgoR$>
> Htmlized:
> https://datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-an=
alysis
> <https://urldefense..com/v3/__https:/datatracker.ietf.org/doc/html/draft-=
dukes-spring-srv6-overhead-analysis__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwr=
ZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjOjtZl8r$>
>
>
> Abstract:
>    SRv6 network programming provides the framework for the best
>    compression of an IPv6 header within an SR domain.  This document
>    provides the analysis to illustrate this fact.
>
>
>
> The IETF Secretariat
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
> --

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

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Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div><div dir=3D"auto">Darren=C2=A0</div><div dir=3D"auto"><br></div></div>=
<div dir=3D"auto">The SR flavor and SRv6 compression comparison draft I am =
planning to publish soon is a from a =E2=80=9Cneutral=E2=80=9D party myself=
 as an operator versus vendor bias having vendor affiliation.</div><div dir=
=3D"auto"><br></div><div dir=3D"auto">I would like this document to gain tr=
action with Spring and WG adoption as it being =E2=80=9CNeutral=E2=80=9D it=
 benefit all both operators as well as vendors alike.</div><div dir=3D"auto=
"><br></div><div dir=3D"auto">I would like to get all the nitty gritty meat=
 deep dive behind the technical merit of each SRv6 compression technique.=
=C2=A0 This draft I am proposing as well will help maybe either come to a c=
onsensus that one drafts compression technique is the one Spring WG has dec=
ided to back and has WG concerns over other compression techniques.=C2=A0 A=
nd maybe might be the case that all have their merit and all the compressio=
n techniques gain WG adoption and as they all have their pluses and minuses=
 and at that point we would let the industry decide which gains traction in=
 a real world deployments.</div><div dir=3D"auto"><br></div><div dir=3D"aut=
o">Kind Regards</div><div dir=3D"auto"><br></div><div dir=3D"auto">Gyan</di=
v><div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr"=
>On Sat, Jun 27, 2020 at 9:13 PM Gyan Mishra &lt;<a href=3D"mailto:hayabusa=
gsm@gmail.com">hayabusagsm@gmail.com</a>&gt; wrote:<br></div><blockquote cl=
ass=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px=
;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204=
)"><div dir=3D"auto"><div><br></div>Daren=C2=A0<div><br></div><div>As SRv6 =
has its inherent MSD issues right out of the gate and requires use of a myr=
iad of compression techniques to make SRv6 viable for long SR-TE strict pat=
hs.</div><div><br></div><div><p class=3D"MsoNormal" style=3D"font-size:16px=
;word-spacing:1px;border-color:rgb(49,49,49);color:rgb(49,49,49)"><b style=
=3D"font-size:1rem;border-color:rgb(49,49,49)">Ref: List of competing solut=
ions in SPRING<u style=3D"border-color:rgb(49,49,49)"></u><u style=3D"borde=
r-color:rgb(49,49,49)"></u></b></p><p class=3D"MsoNormal" style=3D"font-siz=
e:1rem;word-spacing:1px;border-color:rgb(49,49,49);color:rgb(49,49,49)">[1]=
=C2=A0<a href=3D"https://datatracker.ietf.org/doc/draft-cl-spring-generaliz=
ed-srv6-np/?include_text=3D1" style=3D"font-size:1rem;border-color:rgb(66,1=
33,244);color:rgb(66,133,244)" target=3D"_blank">https://datatracker.ietf.o=
rg/doc/<span style=3D"background-color:rgba(253,239,193,0.5)">draft</span>-=
cl-spring-generalized-<span style=3D"background-color:rgba(253,239,193,0.5)=
">srv6</span>-np/?include_text=3D1</a><u style=3D"border-color:rgb(49,49,49=
)"></u><u style=3D"border-color:rgb(49,49,49)"></u></p><p class=3D"MsoNorma=
l" style=3D"font-size:1rem;word-spacing:1px;border-color:rgb(49,49,49);colo=
r:rgb(49,49,49)">[2]=C2=A0<a href=3D"https://datatracker.ietf.org/doc/draft=
-li-spring-compressed-srv6-np/?include_text=3D1" style=3D"font-size:1rem;bo=
rder-color:rgb(66,133,244);color:rgb(66,133,244)" target=3D"_blank">https:/=
/datatracker.ietf.org/doc/<span style=3D"background-color:rgba(253,239,193,=
0.5)">draft</span>-li-spring-<span style=3D"background-color:rgba(253,239,1=
93,0.5)">compressed</span>-<span style=3D"background-color:rgba(253,239,193=
,0.5)">srv6</span>-np/?include_text=3D1</a><u style=3D"border-color:rgb(49,=
49,49)"></u><u style=3D"border-color:rgb(49,49,49)"></u></p><p class=3D"Mso=
Normal" style=3D"font-size:1rem;word-spacing:1px;border-color:rgb(49,49,49)=
;color:rgb(49,49,49)">[3]=C2=A0<a href=3D"https://datatracker.ietf.org/doc/=
draft-mirsky-6man-unified-id-sr/?include_text=3D1" style=3D"font-size:1rem;=
border-color:rgb(66,133,244);color:rgb(66,133,244)" target=3D"_blank">https=
://datatracker.ietf.org/doc/<span style=3D"background-color:rgba(253,239,19=
3,0.5)">draft</span>-mirsky-6man-unified-id-sr/?include_text=3D1</a><u styl=
e=3D"border-color:rgb(49,49,49)"></u><u style=3D"border-color:rgb(49,49,49)=
"></u></p><p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px;b=
order-color:rgb(49,49,49);color:rgb(49,49,49)">[4]=C2=A0<a href=3D"https://=
datatracker.ietf.org/doc/draft-decraene-spring-srv6-vlsid/" style=3D"font-s=
ize:1rem;border-color:rgb(66,133,244);color:rgb(66,133,244)" target=3D"_bla=
nk">https://datatracker.ietf.org/doc/<span style=3D"background-color:rgba(2=
53,239,193,0.5)">draft</span>-decraene-spring-<span style=3D"background-col=
or:rgba(253,239,193,0.5)">srv6</span>-vlsid/</a><u style=3D"border-color:rg=
b(49,49,49)"></u><u style=3D"border-color:rgb(49,49,49)"></u></p><p class=
=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px;border-color:rgb(49=
,49,49);color:rgb(49,49,49)">[5]=C2=A0<a href=3D"https://datatracker.ietf.o=
rg/doc/draft-filsfils-spring-net-pgm-extension-srv6-usid/?include_text=3D1"=
 style=3D"font-size:1rem;border-color:rgb(66,133,244);color:rgb(66,133,244)=
" target=3D"_blank">https://datatracker.ietf.org/doc/<span style=3D"backgro=
und-color:rgba(253,239,193,0.5)">draft</span>-filsfils-spring-net-pgm-exten=
sion-<span style=3D"background-color:rgba(253,239,193,0.5)">srv6</span>-<sp=
an style=3D"font-size:1rem;background-color:rgba(253,239,193,0.5);border-co=
lor:rgb(66,133,244)">usid</span>/?include_text=3D1</a></p><p class=3D"MsoNo=
rmal" style=3D"font-size:1rem;word-spacing:1px;border-color:rgb(49,49,49);c=
olor:rgb(49,49,49)"><br></p><p class=3D"MsoNormal" style=3D"font-size:1rem;=
word-spacing:1px;border-color:rgb(49,49,49);color:rgb(49,49,49)">In recent =
May timeframe an email came out below came claiming yet another version whi=
ch takes two of the drafts above and generates a new version to help addres=
s the MSD pitfalls of SRv6 that failed to start right out of the gate. =C2=
=A0</p><p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px;bord=
er-color:rgb(49,49,49);color:rgb(49,49,49)"><br></p><p class=3D"MsoNormal" =
style=3D"font-size:1rem;word-spacing:1px;border-color:rgb(49,49,49);color:r=
gb(49,49,49)">My thoughts are as an operator it would be good to have a dra=
ft that compares and contrasts all of the SRv6 compression techniques and w=
hy this new one proposed now is better then any of the others.</p><p class=
=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px;border-color:rgb(49=
,49,49);color:rgb(49,49,49)"><br></p><p class=3D"MsoNormal" style=3D"font-s=
ize:1rem;word-spacing:1px;border-color:rgb(49,49,49);color:rgb(49,49,49)">I=
 am working on a draft that does exactly that as well as comparing the SRv6=
 compression techniques,=C2=A0<span style=3D"font-size:1rem">it also digs i=
nto the weeds and compare from and decision tree perspective pros and cons =
of Segment Routing flavors SR-MPLS, SRv6 and SRM6 and which makes sense for=
 Greenfield =C2=A0and Brownfield deployments. =C2=A0</span></p><p class=3D"=
MsoNormal" style=3D"font-size:1rem;word-spacing:1px;border-color:rgb(49,49,=
49);color:rgb(49,49,49)"><span style=3D"font-size:1rem"><br></span></p><p c=
lass=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px;border-color:rg=
b(49,49,49);color:rgb(49,49,49)"><span style=3D"font-size:1rem">Once I have=
 the draft published I will be polling all the authors of the SRv6 compress=
ion drafts to dig into the detailed comparison of compression techniques an=
d why one should chosen over another.</span></p><p class=3D"MsoNormal" styl=
e=3D"font-size:1rem;word-spacing:1px;border-color:rgb(49,49,49);color:rgb(4=
9,49,49)"><br></p><p class=3D"MsoNormal" style=3D"font-size:1rem;word-spaci=
ng:1px;border-color:rgb(49,49,49);color:rgb(49,49,49)">Excerpt from email t=
o Spring WG May timeframe:</p><p class=3D"MsoNormal" style=3D"font-size:1re=
m;word-spacing:1px;border-color:rgb(49,49,49);color:rgb(49,49,49)"><br></p>=
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px;border-colo=
r:rgb(49,49,49);color:rgb(49,49,49)"><span style=3D"font-size:1rem;border-c=
olor:rgb(49,49,49)">Dear SPRING,</span><br><br><span style=3D"font-size:1re=
m;border-color:rgb(49,49,49)">The authors of=C2=A0<span style=3D"background=
-color:rgba(253,239,193,0.5)">draft</span>-filsfils-spring-net-pgm-</span><=
span style=3D"font-size:1rem;border-color:rgb(49,49,49)">extension-<span st=
yle=3D"background-color:rgba(253,239,193,0.5)">srv6</span>-</span><span sty=
le=3D"font-size:1rem;background-color:rgba(253,239,193,0.5);border-color:rg=
b(49,49,49)">usid</span><span style=3D"font-size:1rem;border-color:rgb(49,4=
9,49)">=C2=A0and=C2=A0<span style=3D"background-color:rgba(253,239,193,0.5)=
">draft</span>-cl-spring-generalized-sr</span><span style=3D"font-size:1rem=
;border-color:rgb(49,49,49)">v6-for-cmpr have been working together on a jo=
int document that describes how=C2=A0<span style=3D"background-color:rgba(2=
53,239,193,0.5)">compressed</span>=C2=A0<span style=3D"background-color:rgb=
a(253,239,193,0.5)">SRv6</span>=C2=A0Segment-List encoding in the SRH can b=
e achieved without any change to the=C2=A0<span style=3D"background-color:r=
gba(253,239,193,0.5)">SRv6</span>=C2=A0data plane or control plane. The new=
=C2=A0<span style=3D"background-color:rgba(253,239,193,0.5)">draft</span>=
=C2=A0link is as follows:</span><br><br><a href=3D"https://www.ietf.org/int=
ernet-drafts/draft-filsfilscheng-spring-srv6-srh-comp-sl-enc-01.txt" rel=3D=
"noreferrer" style=3D"font-size:1rem;border-color:rgb(66,133,244);color:rgb=
(66,133,244)" target=3D"_blank">https://www.ietf.org/internet-<span style=
=3D"background-color:rgba(253,239,193,0.5)">drafts</span>/<span style=3D"ba=
ckground-color:rgba(253,239,193,0.5)">draft</span>-filsfilscheng-spring-<sp=
an style=3D"background-color:rgba(253,239,193,0.5)">srv6</span>-srh-comp-sl=
-enc-01.txt</a><br><br><span style=3D"font-size:1rem;border-color:rgb(49,49=
,49)">In this=C2=A0<span style=3D"background-color:rgba(253,239,193,0.5)">d=
raft</span>, we leverage the notions of=C2=A0<span style=3D"background-colo=
r:rgba(253,239,193,0.5)">SID</span>function and argument defined in=C2=A0<s=
pan style=3D"background-color:rgba(253,239,193,0.5)">draft</span>-ietf-spri=
ng-<span style=3D"background-color:rgba(253,239,193,0.5)">srv6</span>-netwo=
rk</span><span style=3D"font-size:1rem;border-color:rgb(49,49,49)">-program=
ming to=C2=A0<span style=3D"background-color:rgba(253,239,193,0.5)">compres=
s</span>=C2=A0the=C2=A0<span style=3D"background-color:rgba(253,239,193,0.5=
)">SRv6</span>Segment List encoding in the SRH. The=C2=A0<span style=3D"bac=
kground-color:rgba(253,239,193,0.5)">compressed</span>=C2=A0encoding is ach=
ieved through two new flavors of the base Network Programming behaviors (En=
d, End.X and End.T), named NEXT-C-<span style=3D"background-color:rgba(253,=
239,193,0.5)">SID</span>=C2=A0and REPLACE-C-<span style=3D"background-color=
:rgba(253,239,193,0.5)">SID</span>.</span></p><br><div dir=3D"ltr">Sent fro=
m my iPhone</div><div dir=3D"ltr"><br><blockquote type=3D"cite">On Jun 27, =
2020, at 7:45 PM, Ron Bonica &lt;rbonica=3D<a href=3D"mailto:40juniper.net@=
dmarc.ietf.org" target=3D"_blank">40juniper.net@dmarc.ietf.org</a>&gt; wrot=
e:<br><br></blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=
=BB=BF

</div></blockquote></div></div><div dir=3D"auto"><div><blockquote type=3D"c=
ite"><div dir=3D"ltr">




<div>
<p class=3D"MsoNormal">Darren,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Your draft purports to be an =E2=80=9CSRv6 Network P=
rogramming Overhead Analysis=E2=80=9D.=C2=A0 As such, it should address ove=
rhead analysis and avoid:<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li style=3D"margin-left:0in">Topics that are orthogonal to overhead analys=
is<u></u><u></u></li><li style=3D"margin-left:0in">The appearance of attemp=
ting to position one compression strategy over another for reasons other th=
an overhead<u></u><u></u></li></ul>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">So, I recommend that you make the following changes =
to Section 5:<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li style=3D"margin-left:0in">The sentence =E2=80=9CThe mapping proposal, [=
I-D.bonica-spring-sr-mapped-six], does not bring any compression benefit co=
mpared to SRv6-native compression methods [I-D.filsfilscheng-spring-srv6-sr=
h-comp-sl-enc]=E2=80=9D
 gives the appearance of author bias. Please replaces it with a neutral sen=
tence like, =E2=80=9CThe two =C2=A0proposals [I-D.filsfilscheng-spring-srv6=
-srh-comp-sl-enc] [I-D.bonica-spring-sr-mapped-six] provide similar compres=
sion.<u></u><u></u></li><li style=3D"margin-left:0in">You say that =E2=80=
=9D The SRm6 proposal does have several deficiencies however, including:=E2=
=80=9D=E2=80=A6. None of these have anything to do with overhead analysis. =
They don=E2=80=99t belong in this document.<u></u><u></u></li><li style=3D"=
margin-left:0in">Also, many of the things that you say in that bullet list =
are blatantly false. For example, SRm6 does not introduce a new data plane.=
 In is extremely orthodox IPv6.
<u></u><u></u></li></ul>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Ron<u></u><=
u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p align=3D"center" style=3D"margin:0in 0in 0.0001pt;text-align:center">
<span style=3D"font-size:7pt;color:black">Juniper Business Use Only</span><=
u></u><u></u></p>
<div>
<div style=3D"border-style:solid none none;border-top-width:1pt;padding:3pt=
 0in 0in;border-top-color:rgb(225,225,225)">
<p class=3D"MsoNormal"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bou=
nces@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt; <b>On Beha=
lf Of
</b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Saturday, June 27, 2020 1:22 AM<br>
<b>To:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> [spring] Fw: New Version Notification for draft-dukes-sprin=
g-srv6-overhead-analysis-00.txt<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal" style=3D"line-height:12pt;background-color:rgb(255,2=
35,156)"><b><span style=3D"font-size:10.5pt;font-family:Lato,sans-serif;col=
or:black">[External Email. Be cautious of content]<u style=3D"font-family:L=
ato,sans-serif"></u><u style=3D"font-family:Lato,sans-serif"></u></span></b=
></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">Hello SPR=
ING working group<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">There has=
 been lots of work done in SPRING to develop, combine and refine methods of=
 reducing the overhead of the SRv6 SRH.=C2=A0 We have some good submissions=
 of requirements, framework analysis but
 no direct comparisons of different methods.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">This draf=
t kicks off that conversation with a simple analysis comparing SRv6 native =
compression available via draft-filsfilscheng-spring-srv6-srh-comp-sl-enc=
=C2=A0vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.<u></u>=
<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">Thanks<u>=
</u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">=C2=A0 Da=
rren<u></u><u></u></span></p>
</div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt"><span style=3D"font-siz=
e:12pt;color:black"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"m_-7065254237394334895divRplyFwdMsg">
<p class=3D"MsoNormal"><b><span style=3D"color:black">From:</span></b><span=
 style=3D"color:black">
<a href=3D"mailto:internet-drafts@ietf.org" target=3D"_blank">internet-draf=
ts@ietf.org</a> &lt;<a href=3D"mailto:internet-drafts@ietf.org" target=3D"_=
blank">internet-drafts@ietf.org</a>&gt;<br>
<b>Sent:</b> Saturday, June 27, 2020 1:00 AM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com" ta=
rget=3D"_blank">ddukes@cisco.com</a>&gt;<br>
<b>Subject:</b> New Version Notification for draft-dukes-spring-srv6-overhe=
ad-analysis-00.txt</span>
<u></u><u></u></p>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
</div>
<div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt"><br>
A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt<br>
has been successfully submitted by Darren Dukes and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 draft-duk=
es-spring-srv6-overhead-analysis<br>
Revision:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 00<br>
Title:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 SRv6 Network P=
rogramming Overhead Analysis<br>
Document date:=C2=A0 2020-06-27<br>
Group:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Individual Sub=
mission<br>
Pages:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 9<br>
URL:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <a h=
ref=3D"https://urldefense.com/v3/__https:/www.ietf.org/internet-drafts/draf=
t-dukes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8=
ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$" target=3D"_blank">
https://www.ietf.org/internet-drafts/draft-dukes-spring-srv6-overhead-analy=
sis-00.txt</a><br>
Status:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <a href=3D"https://=
urldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-dukes-spring-srv6=
-overhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYk=
MVwpqxc8PEt_xKQSRjOMg93gm$" target=3D"_blank">
https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-overhead-analysis/=
</a><br>
Htmlized:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <a href=3D"https://urldefense=
..com/v3/__https:/tools.ietf..org/html/draft-dukes-spring-srv6-overhead-ana=
lysis-00__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt=
_xKQSRjH9AbgoR$" target=3D"_blank">
https://tools.ietf.org/html/draft-dukes-spring-srv6-overhead-analysis-00</a=
><br>
Htmlized:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <a href=3D"https://urldefense=
..com/v3/__https:/datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-ove=
rhead-analysis__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpq=
xc8PEt_xKQSRjOjtZl8r$" target=3D"_blank">
https://datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-anal=
ysis</a><br>
<br>
<br>
Abstract:<br>
=C2=A0=C2=A0 SRv6 network programming provides the framework for the best<b=
r>
=C2=A0=C2=A0 compression of an IPv6 header within an SR domain.=C2=A0 This =
document<br>
=C2=A0=C2=A0 provides the analysis to illustrate this fact.<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0<br>
The IETF Secretariat<u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>


<span>_______________________________________________</span><br><span>sprin=
g mailing list</span><br><span><a href=3D"mailto:spring@ietf.org" target=3D=
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istinfo/spring</a></span><br></div></blockquote></div></div></blockquote></=
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v dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div><p st=
yle=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com/" style=3D"co=
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tyle=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NHG DS&quot;,Ari=
al,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b></p><p style=
=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font face=3D"georgia,=
 serif" style=3D"color:black;font-size:1em"><i>Network Solutions A</i></fon=
t><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=C2=A0</i></fo=
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From nobody Sun Jun 28 06:56:14 2020
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From: "Pengshuping (Peng Shuping)" <pengshuping@huawei.com>
To: "spring@ietf.org" <spring@ietf.org>
CC: "spring-chairs@ietf.org" <spring-chairs@ietf.org>
Thread-Topic: Presentation slot request in SPRING WG - IETF108
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Subject: [spring] Presentation slot request in SPRING WG - IETF108
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--_000_4278D47A901B3041A737953BAA078ADE190BBE50dggeml512mbxchi_
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Hi all,

We have decided to use Google Form to collect presentation slot requests in=
 the SPRING WG for this IETF108. Please fill in your request in the followi=
ng Form.

https://docs.google.com/forms/d/e/1FAIpQLSeed9WSYsu5qlxNTOIzd49gFeZSlfny9C6=
xmB8ZxQTrERufyw/viewform
If there is any issue for you to access this Form, please send your request=
 directly to spring-chairs@ietf.org<mailto:spring-chairs@ietf.org>.

Thank you!

Best regards,
Shuping

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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US">Hi all,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">We have decided to use Google F=
orm to collect presentation slot requests in the SPRING WG for this IETF108=
. Please fill in your request in the following Form.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><a href=3D"https://docs.google.=
com/forms/d/e/1FAIpQLSeed9WSYsu5qlxNTOIzd49gFeZSlfny9C6xmB8ZxQTrERufyw/view=
form">https://docs.google.com/forms/d/e/1FAIpQLSeed9WSYsu5qlxNTOIzd49gFeZSl=
fny9C6xmB8ZxQTrERufyw/viewform</a><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">If there is any issue for you t=
o access this Form, please send your request directly to
<a href=3D"mailto:spring-chairs@ietf.org">spring-chairs@ietf.org</a>. <o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Thank you!<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Best regards,<o:p></o:p></span>=
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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Mon, 29 Jun 2020 02:46:05 -0400
Message-ID: <CABNhwV2sN6r_SPz4N+RAVK910s2mGyoU8VR_G1BSUraBnCyhSA@mail.gmail.com>
To: James Guichard <james.n.guichard@futurewei.com>
Cc: "Darren Dukes (ddukes)" <ddukes=40cisco.com@dmarc.ietf.org>,  Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>, SPRING WG <spring@ietf.org>
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Subject: Re: [spring] New Version Notification for draft-dukes-spring-srv6-overhead-analysis-00.txt
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Thank you Jim, Joel & Bruno for the update.

I am looking forward to the SRv6 compression work being finalized.  This is
a big step forward for SRv6.

Just an idea I am wondering if the official compression update algorithm
that is being finalized should maybe update the two main documents that
make up the SRv6 specification, RFC 8754 and SRV6 PGM draft.

That would make SRH compression solution part of the original SRv6
specification instead of an add on feature to the specification.   Would
make for seamless integration and deployment of the compression technique.


Kind Regards

Gyan


On Sun, Jun 28, 2020 at 5:32 PM James Guichard <
james.n.guichard@futurewei.com> wrote:

> Hi Gyan, et al.
>
>
>
> Your email is timely.
>
>
>
> This past week the chairs have been working on a set of plans and
> approaches to move the SR IPv6 Compression work ahead expeditiously. We a=
re
> currently finalizing those plans and will make an announcement to the WG
> very shortly.
>
>
>
> Thanks!
>
>
>
> Jim, Joel & Bruno
>
>
>
>
>
>
>
> *From:* spring <spring-bounces@ietf.org> *On Behalf Of *Gyan Mishra
> *Sent:* Saturday, June 27, 2020 9:25 PM
> *To:* Ron Bonica <rbonica=3D40juniper.net@dmarc.ietf.org>
> *Cc:* SPRING WG <spring@ietf.org>; Darren Dukes (ddukes) <ddukes=3D
> 40cisco.com@dmarc.ietf.org>
> *Subject:* Re: [spring] New Version Notification for
> draft-dukes-spring-srv6-overhead-analysis-00.txt
>
>
>
> Darren
>
>
>
> The SR flavor and SRv6 compression comparison draft I am planning to
> publish soon is a from a =E2=80=9Cneutral=E2=80=9D party myself as an ope=
rator versus
> vendor bias having vendor affiliation.
>
>
>
> I would like this document to gain traction with Spring and WG adoption a=
s
> it being =E2=80=9CNeutral=E2=80=9D it benefit all both operators as well =
as vendors alike.
>
>
>
> I would like to get all the nitty gritty meat deep dive behind the
> technical merit of each SRv6 compression technique.  This draft I am
> proposing as well will help maybe either come to a consensus that one
> drafts compression technique is the one Spring WG has decided to back and
> has WG concerns over other compression techniques.  And maybe might be th=
e
> case that all have their merit and all the compression techniques gain WG
> adoption and as they all have their pluses and minuses and at that point =
we
> would let the industry decide which gains traction in a real world
> deployments.
>
>
>
> Kind Regards
>
>
>
> Gyan
>
>
>
> On Sat, Jun 27, 2020 at 9:13 PM Gyan Mishra <hayabusagsm@gmail.com> wrote=
:
>
>
>
> Daren
>
>
>
> As SRv6 has its inherent MSD issues right out of the gate and requires us=
e
> of a myriad of compression techniques to make SRv6 viable for long SR-TE
> strict paths.
>
>
>
> *Ref: List of competing solutions in SPRING*
>
> [1]
> https://datatracker.ietf.org/doc/draft-cl-spring-generalized-srv6-np/?inc=
lude_text=3D1
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdata=
tracker.ietf.org%2Fdoc%2Fdraft-cl-spring-generalized-srv6-np%2F%3Finclude_t=
ext%3D1&data=3D02%7C01%7Cjames.n.guichard%40futurewei.com%7Cc2ddaad6243b42b=
9984a08d81b023111%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637289043518=
555905&sdata=3DGPLglky55ugjXpEwIBjg6jaqz517CFV5eg0x5XSbdgA%3D&reserved=3D0>
>
> [2]
> https://datatracker.ietf.org/doc/draft-li-spring-compressed-srv6-np/?incl=
ude_text=3D1
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdata=
tracker.ietf.org%2Fdoc%2Fdraft-li-spring-compressed-srv6-np%2F%3Finclude_te=
xt%3D1&data=3D02%7C01%7Cjames.n.guichard%40futurewei.com%7Cc2ddaad6243b42b9=
984a08d81b023111%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C6372890435185=
65902&sdata=3DsvmAL2RQma2yEDw1sDnmZJBhQhy9njMLd4qnrEx1REQ%3D&reserved=3D0>
>
> [3]
> https://datatracker.ietf.org/doc/draft-mirsky-6man-unified-id-sr/?include=
_text=3D1
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdata=
tracker.ietf.org%2Fdoc%2Fdraft-mirsky-6man-unified-id-sr%2F%3Finclude_text%=
3D1&data=3D02%7C01%7Cjames.n.guichard%40futurewei.com%7Cc2ddaad6243b42b9984=
a08d81b023111%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C6372890435185659=
02&sdata=3DYSJZStCW8rXd2O7H%2BUPgYjvL1dUdEGOhFNeKg%2Fkf4SI%3D&reserved=3D0>
>
> [4] https://datatracker.ietf.org/doc/draft-decraene-spring-srv6-vlsid/
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdata=
tracker.ietf.org%2Fdoc%2Fdraft-decraene-spring-srv6-vlsid%2F&data=3D02%7C01=
%7Cjames.n.guichard%40futurewei.com%7Cc2ddaad6243b42b9984a08d81b023111%7C0f=
ee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637289043518575894&sdata=3DLDgbOtS=
zBo8T7J%2BPBmHlgbZY2DDCwjulCvZJtJaffYA%3D&reserved=3D0>
>
> [5]
> https://datatracker.ietf.org/doc/draft-filsfils-spring-net-pgm-extension-=
srv6-usid/?include_text=3D1
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdata=
tracker.ietf.org%2Fdoc%2Fdraft-filsfils-spring-net-pgm-extension-srv6-usid%=
2F%3Finclude_text%3D1&data=3D02%7C01%7Cjames.n.guichard%40futurewei.com%7Cc=
2ddaad6243b42b9984a08d81b023111%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%=
7C637289043518575894&sdata=3D0NAQxSVO2LfjH9FuNIHkmA5eh95kPpbURVg%2BDGw5RzU%=
3D&reserved=3D0>
>
>
>
> In recent May timeframe an email came out below came claiming yet another
> version which takes two of the drafts above and generates a new version t=
o
> help address the MSD pitfalls of SRv6 that failed to start right out of t=
he
> gate.
>
>
>
> My thoughts are as an operator it would be good to have a draft that
> compares and contrasts all of the SRv6 compression techniques and why thi=
s
> new one proposed now is better then any of the others.
>
>
>
> I am working on a draft that does exactly that as well as comparing the
> SRv6 compression techniques, it also digs into the weeds and compare from
> and decision tree perspective pros and cons of Segment Routing flavors
> SR-MPLS, SRv6 and SRM6 and which makes sense for Greenfield  and Brownfie=
ld
> deployments.
>
>
>
> Once I have the draft published I will be polling all the authors of the
> SRv6 compression drafts to dig into the detailed comparison of compressio=
n
> techniques and why one should chosen over another.
>
>
>
> Excerpt from email to Spring WG May timeframe:
>
>
>
> Dear SPRING,
>
> The authors
> of draft-filsfils-spring-net-pgm-extension-srv6-usid and draft-cl-spring-=
generalized-srv6-for-cmpr
> have been working together on a joint document that describes
> how compressed SRv6 Segment-List encoding in the SRH can be achieved
> without any change to the SRv6 data plane or control plane. The
> new draft link is as follows:
>
>
> https://www.ietf.org/internet-drafts/draft-filsfilscheng-spring-srv6-srh-=
comp-sl-enc-01.txt
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fwww.=
ietf.org%2Finternet-drafts%2Fdraft-filsfilscheng-spring-srv6-srh-comp-sl-en=
c-01.txt&data=3D02%7C01%7Cjames.n.guichard%40futurewei.com%7Cc2ddaad6243b42=
b9984a08d81b023111%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C63728904351=
8585891&sdata=3DeiWyVoACjJakye5Yc8vFnr6L1DsMVEcEhMSVeQUAGBI%3D&reserved=3D0=
>
>
> In this draft, we leverage the notions of SIDfunction and argument define=
d
> in draft-ietf-spring-srv6-network-programming to compress the SRv6Segment
> List encoding in the SRH. The compressed encoding is achieved through two
> new flavors of the base Network Programming behaviors (End, End.X and
> End.T), named NEXT-C-SID and REPLACE-C-SID.
>
>
>
> Sent from my iPhone
>
>
>
> On Jun 27, 2020, at 7:45 PM, Ron Bonica <rbonica=3D
> 40juniper.net@dmarc.ietf.org> wrote:
>
> =EF=BB=BF
>
> Darren,
>
>
>
> Your draft purports to be an =E2=80=9CSRv6 Network Programming Overhead
> Analysis=E2=80=9D.  As such, it should address overhead analysis and avoi=
d:
>
>
>
>    - Topics that are orthogonal to overhead analysis
>    - The appearance of attempting to position one compression strategy
>    over another for reasons other than overhead
>
>
>
> So, I recommend that you make the following changes to Section 5:
>
>
>
>    - The sentence =E2=80=9CThe mapping proposal,
>    [I-D.bonica-spring-sr-mapped-six], does not bring any compression bene=
fit
>    compared to SRv6-native compression methods
>    [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]=E2=80=9D gives the app=
earance of
>    author bias. Please replaces it with a neutral sentence like, =E2=80=
=9CThe two
>     proposals [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]
>    [I-D.bonica-spring-sr-mapped-six] provide similar compression.
>    - You say that =E2=80=9D The SRm6 proposal does have several deficienc=
ies
>    however, including:=E2=80=9D=E2=80=A6. None of these have anything to =
do with overhead
>    analysis. They don=E2=80=99t belong in this document.
>    - Also, many of the things that you say in that bullet list are
>    blatantly false. For example, SRm6 does not introduce a new data plane=
. In
>    is extremely orthodox IPv6.
>
>
>
>
>         Ron
>
>
>
>
>
>
>
>
>
> Juniper Business Use Only
>
> *From:* spring <spring-bounces@ietf.org> *On Behalf Of *Darren Dukes
> (ddukes)
> *Sent:* Saturday, June 27, 2020 1:22 AM
> *To:* SPRING WG <spring@ietf.org>
> *Subject:* [spring] Fw: New Version Notification for
> draft-dukes-spring-srv6-overhead-analysis-00.txt
>
>
>
> *[External Email. Be cautious of content]*
>
>
>
> Hello SPRING working group
>
>
>
> There has been lots of work done in SPRING to develop, combine and refine
> methods of reducing the overhead of the SRv6 SRH.  We have some good
> submissions of requirements, framework analysis but no direct comparisons
> of different methods.
>
>
>
> This draft kicks off that conversation with a simple analysis comparing
> SRv6 native compression available via
> draft-filsfilscheng-spring-srv6-srh-comp-sl-enc vs the mapped SRm6 propos=
al
> draft-bonica-spring-sr-mapped-six.
>
>
>
>
>
> Thanks
>
>   Darren
>
>
>
>
> ------------------------------
>
> *From:* internet-drafts@ietf.org <internet-drafts@ietf.org>
> *Sent:* Saturday, June 27, 2020 1:00 AM
> *To:* Darren Dukes (ddukes) <ddukes@cisco.com>
> *Subject:* New Version Notification for
> draft-dukes-spring-srv6-overhead-analysis-00.txt
>
>
>
>
> A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt
> has been successfully submitted by Darren Dukes and posted to the
> IETF repository.
>
> Name:           draft-dukes-spring-srv6-overhead-analysis
> Revision:       00
> Title:          SRv6 Network Programming Overhead Analysis
> Document date:  2020-06-27
> Group:          Individual Submission
> Pages:          9
> URL:
> https://www.ietf.org/internet-drafts/draft-dukes-spring-srv6-overhead-ana=
lysis-00.txt
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Furld=
efense.com%2Fv3%2F__https%3A%2Fwww.ietf.org%2Finternet-drafts%2Fdraft-dukes=
-spring-srv6-overhead-analysis-00.txt__%3B!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlk=
NqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4%24&data=3D02%7C01%7Cjames.n.g=
uichard%40futurewei.com%7Cc2ddaad6243b42b9984a08d81b023111%7C0fee8ff2a3b240=
189c753a1d5591fedc%7C1%7C0%7C637289043518585891&sdata=3D4YF%2Bj3nWlM0mf63hQ=
gSmnADiPyv7LP9UhPHVTNcGUFI%3D&reserved=3D0>
> Status:
> https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-overhead-analysi=
s/
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Furld=
efense.com%2Fv3%2F__https%3A%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-dukes-spr=
ing-srv6-overhead-analysis%2F__%3B!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkB=
jF4IixztGJYkMVwpqxc8PEt_xKQSRjOMg93gm%24&data=3D02%7C01%7Cjames.n.guichard%=
40futurewei.com%7Cc2ddaad6243b42b9984a08d81b023111%7C0fee8ff2a3b240189c753a=
1d5591fedc%7C1%7C0%7C637289043518585891&sdata=3DyJNsY1WzDbAEhWkewAmuyfaJxZd=
YitlU%2BQhUyMqyUSI%3D&reserved=3D0>
> Htmlized:
> https://tools.ietf.org/html/draft-dukes-spring-srv6-overhead-analysis-00
> <https://urldefense...com/v3/__https:/tools.ietf..org/html/draft-dukes-sp=
ring-srv6-overhead-analysis-00__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBj=
F4IixztGJYkMVwpqxc8PEt_xKQSRjH9AbgoR$>
> Htmlized:
> https://datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-an=
alysis
> <https://urldefense...com/v3/__https:/datatracker.ietf.org/doc/html/draft=
-dukes-spring-srv6-overhead-analysis__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqw=
rZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjOjtZl8r$>
>
>
> Abstract:
>    SRv6 network programming provides the framework for the best
>    compression of an IPv6 header within an SR domain.  This document
>    provides the analysis to illustrate this fact.
>
>
>
> The IETF Secretariat
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fwww.=
ietf.org%2Fmailman%2Flistinfo%2Fspring&data=3D02%7C01%7Cjames.n.guichard%40=
futurewei.com%7Cc2ddaad6243b42b9984a08d81b023111%7C0fee8ff2a3b240189c753a1d=
5591fedc%7C1%7C0%7C637289043518595889&sdata=3Dwg9dF%2F%2FQbQ6a06DdTYObINRJ3=
BhqkH%2FAeR2ZejyzN54%3D&reserved=3D0>
>
> --
>
> [image: Image removed by sender.]
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttp%3A%2F%2Fwww.v=
erizon.com%2F&data=3D02%7C01%7Cjames.n.guichard%40futurewei.com%7Cc2ddaad62=
43b42b9984a08d81b023111%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637289=
043518595889&sdata=3DZyou1NC%2FYObph6JwHpSO%2BMzFxNfcd1BkgKVufWDjqR0%3D&res=
erved=3D0>
>
> *Gyan Mishra*
>
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
>
> *Network Solutions Architect *
>
>
>
> *M 301 502-1347 13101 Columbia Pike
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
> *Silver Spring, MD
> <https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
>
>
>
--=20

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--0000000000005ee7fd05a9336ae5
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div><br></div><div><div dir=3D"auto">Thank you Jim, Joel &amp; Bruno for t=
he update.</div><div dir=3D"auto"><br></div><div dir=3D"auto">I am looking =
forward to the SRv6 compression work being finalized.=C2=A0 This is a big s=
tep forward for SRv6.</div><div dir=3D"auto"><br></div><div dir=3D"auto">Ju=
st an idea I am wondering if the official compression update algorithm that=
 is being finalized should maybe update the two main documents that make up=
 the SRv6 specification, RFC 8754 and SRV6 PGM draft. =C2=A0</div><div dir=
=3D"auto"><br></div><div dir=3D"auto">That would make SRH compression solut=
ion part of the original SRv6 specification instead of an add on feature to=
 the specification. =C2=A0 Would make for seamless integration and deployme=
nt of the compression technique.</div><div dir=3D"auto"><br></div><div dir=
=3D"auto"><br></div><div dir=3D"auto">Kind Regards=C2=A0</div><div dir=3D"a=
uto"><br></div><div dir=3D"auto">Gyan</div><div dir=3D"auto"><br></div><br>=
<div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Sun, Ju=
n 28, 2020 at 5:32 PM James Guichard &lt;<a href=3D"mailto:james.n.guichard=
@futurewei.com">james.n.guichard@futurewei.com</a>&gt; wrote:<br></div><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left=
-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(2=
04,204,204)">





<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"m_-5233827659612473564WordSection1">
<p class=3D"MsoNormal">Hi Gyan, et al.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Your email is timely. <u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">This past week the chairs have been working on a set=
 of plans and approaches to move the SR IPv6 Compression work ahead expedit=
iously. We are currently finalizing those plans and will make an announceme=
nt to the WG very shortly.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Thanks!<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Jim, Joel &amp; Bruno<u></u><u></u></p></div></div><=
div lang=3D"EN-US" link=3D"blue" vlink=3D"purple"><div class=3D"m_-52338276=
59612473564WordSection1">
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div style=3D"border-style:solid none none;border-top-width:1pt;padding:3pt=
 0in 0in;border-top-color:rgb(225,225,225)">
<p class=3D"MsoNormal"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bou=
nces@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt; <b>On Beha=
lf Of
</b>Gyan Mishra<br>
<b>Sent:</b> Saturday, June 27, 2020 9:25 PM<br>
<b>To:</b> Ron Bonica &lt;rbonica=3D<a href=3D"mailto:40juniper.net@dmarc.i=
etf.org" target=3D"_blank">40juniper.net@dmarc.ietf.org</a>&gt;<br>
<b>Cc:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;; Darren Dukes (ddukes) &lt;ddukes=3D<a href=3D"m=
ailto:40cisco.com@dmarc.ietf.org" target=3D"_blank">40cisco.com@dmarc.ietf.=
org</a>&gt;<br>
<b>Subject:</b> Re: [spring] New Version Notification for draft-dukes-sprin=
g-srv6-overhead-analysis-00.txt<u></u><u></u></p>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal">Darren=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
<div>
<p class=3D"MsoNormal">The SR flavor and SRv6 compression comparison draft =
I am planning to publish soon is a from a =E2=80=9Cneutral=E2=80=9D party m=
yself as an operator versus vendor bias having vendor affiliation.<u></u><u=
></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">I would like this document to gain traction with Spr=
ing and WG adoption as it being =E2=80=9CNeutral=E2=80=9D it benefit all bo=
th operators as well as vendors alike.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">I would like to get all the nitty gritty meat deep d=
ive behind the technical merit of each SRv6 compression technique.=C2=A0 Th=
is draft I am proposing as well will help maybe either come to a consensus =
that one drafts compression technique is
 the one Spring WG has decided to back and has WG concerns over other compr=
ession techniques.=C2=A0 And maybe might be the case that all have their me=
rit and all the compression techniques gain WG adoption and as they all hav=
e their pluses and minuses and at that
 point we would let the industry decide which gains traction in a real worl=
d deployments.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Kind Regards<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Gyan<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal">On Sat, Jun 27, 2020 at 9:13 PM Gyan Mishra &lt;<a h=
ref=3D"mailto:hayabusagsm@gmail.com" target=3D"_blank">hayabusagsm@gmail.co=
m</a>&gt; wrote:<u></u><u></u></p>
</div>
<blockquote style=3D"border-style:none none none solid;border-left-width:1p=
t;padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt;border-left-color:rgb(20=
4,204,204)">
<div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<p class=3D"MsoNormal">Daren=C2=A0<u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">As SRv6 has its inherent MSD issues right out of the=
 gate and requires use of a myriad of compression techniques to make SRv6 v=
iable for long SR-TE strict paths.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"word-spacing:1px">
<b><span style=3D"font-size:12pt;border:1pt none windowtext;padding:0in;col=
or:rgb(49,49,49)">Ref: List of competing solutions in SPRING</span></b><spa=
n style=3D"font-size:12pt;color:rgb(49,49,49)"><u></u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)">[1]=C2=A0</span><a href=3D"https://nam1=
1.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdatatracker.ietf.or=
g%2Fdoc%2Fdraft-cl-spring-generalized-srv6-np%2F%3Finclude_text%3D1&amp;dat=
a=3D02%7C01%7Cjames.n.guichard%40futurewei.com%7Cc2ddaad6243b42b9984a08d81b=
023111%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637289043518555905&amp;=
sdata=3DGPLglky55ugjXpEwIBjg6jaqz517CFV5eg0x5XSbdgA%3D&amp;reserved=3D0" ta=
rget=3D"_blank"><span style=3D"border:1pt none windowtext;padding:0in;color=
:rgb(66,133,244)">https://datatracker.ietf.org/doc/draft-cl-spring-generali=
zed-srv6-np/?include_text=3D1</span></a><span style=3D"color:rgb(49,49,49)"=
><u></u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)">[2]=C2=A0</span><a href=3D"https://nam1=
1.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdatatracker.ietf.or=
g%2Fdoc%2Fdraft-li-spring-compressed-srv6-np%2F%3Finclude_text%3D1&amp;data=
=3D02%7C01%7Cjames.n.guichard%40futurewei.com%7Cc2ddaad6243b42b9984a08d81b0=
23111%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637289043518565902&amp;s=
data=3DsvmAL2RQma2yEDw1sDnmZJBhQhy9njMLd4qnrEx1REQ%3D&amp;reserved=3D0" tar=
get=3D"_blank"><span style=3D"border:1pt none windowtext;padding:0in;color:=
rgb(66,133,244)">https://datatracker.ietf.org/doc/draft-li-spring-compresse=
d-srv6-np/?include_text=3D1</span></a><span style=3D"color:rgb(49,49,49)"><=
u></u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)">[3]=C2=A0</span><a href=3D"https://nam1=
1.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdatatracker.ietf.or=
g%2Fdoc%2Fdraft-mirsky-6man-unified-id-sr%2F%3Finclude_text%3D1&amp;data=3D=
02%7C01%7Cjames.n.guichard%40futurewei.com%7Cc2ddaad6243b42b9984a08d81b0231=
11%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637289043518565902&amp;sdat=
a=3DYSJZStCW8rXd2O7H%2BUPgYjvL1dUdEGOhFNeKg%2Fkf4SI%3D&amp;reserved=3D0" ta=
rget=3D"_blank"><span style=3D"border:1pt none windowtext;padding:0in;color=
:rgb(66,133,244)">https://datatracker.ietf.org/doc/draft-mirsky-6man-unifie=
d-id-sr/?include_text=3D1</span></a><span style=3D"color:rgb(49,49,49)"><u>=
</u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)">[4]=C2=A0</span><a href=3D"https://nam1=
1.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdatatracker.ietf.or=
g%2Fdoc%2Fdraft-decraene-spring-srv6-vlsid%2F&amp;data=3D02%7C01%7Cjames.n.=
guichard%40futurewei.com%7Cc2ddaad6243b42b9984a08d81b023111%7C0fee8ff2a3b24=
0189c753a1d5591fedc%7C1%7C0%7C637289043518575894&amp;sdata=3DLDgbOtSzBo8T7J=
%2BPBmHlgbZY2DDCwjulCvZJtJaffYA%3D&amp;reserved=3D0" target=3D"_blank"><spa=
n style=3D"border:1pt none windowtext;padding:0in;color:rgb(66,133,244)">ht=
tps://datatracker.ietf.org/doc/draft-decraene-spring-srv6-vlsid/</span></a>=
<span style=3D"color:rgb(49,49,49)"><u></u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)">[5]=C2=A0</span><a href=3D"https://nam1=
1.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdatatracker.ietf.or=
g%2Fdoc%2Fdraft-filsfils-spring-net-pgm-extension-srv6-usid%2F%3Finclude_te=
xt%3D1&amp;data=3D02%7C01%7Cjames.n.guichard%40futurewei.com%7Cc2ddaad6243b=
42b9984a08d81b023111%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637289043=
518575894&amp;sdata=3D0NAQxSVO2LfjH9FuNIHkmA5eh95kPpbURVg%2BDGw5RzU%3D&amp;=
reserved=3D0" target=3D"_blank"><span style=3D"border:1pt none windowtext;p=
adding:0in;color:rgb(66,133,244)">https://datatracker.ietf.org/doc/draft-fi=
lsfils-spring-net-pgm-extension-srv6-usid/?include_text=3D1</span></a><span=
 style=3D"color:rgb(49,49,49)"><u></u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)">In recent May timeframe an email came o=
ut below came claiming yet another version which takes two of the drafts ab=
ove and generates a new version to help address the MSD pitfalls of SRv6 th=
at failed to start right out of the gate.
 =C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)">My thoughts are as an operator it would=
 be good to have a draft that compares and contrasts all of the SRv6 compre=
ssion techniques and why this new one proposed now is better then any of th=
e others.<u></u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)">I am working on a draft that does exact=
ly that as well as comparing the SRv6 compression techniques,=C2=A0it also =
digs into the weeds and compare from and decision tree perspective pros and=
 cons of Segment Routing flavors SR-MPLS, SRv6
 and SRM6 and which makes sense for Greenfield =C2=A0and Brownfield deploym=
ents. =C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)">Once I have the draft published I will =
be polling all the authors of the SRv6 compression drafts to dig into the d=
etailed comparison of compression techniques and why one should chosen over=
 another.<u></u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)">Excerpt from email to Spring WG May tim=
eframe:<u></u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"color:rgb(49,49,49)"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal" style=3D"font-size:1rem;word-spacing:1px">
<span style=3D"border:1pt none windowtext;padding:0in;color:rgb(49,49,49)">=
Dear SPRING,</span><span style=3D"color:rgb(49,49,49)"><br>
<br>
<span style=3D"border:1pt none windowtext;padding:0in">The authors of=C2=A0=
draft-filsfils-spring-net-pgm-extension-srv6-usid=C2=A0and=C2=A0draft-cl-sp=
ring-generalized-srv6-for-cmpr have been working together on a joint docume=
nt that describes how=C2=A0compressed=C2=A0SRv6=C2=A0Segment-List
 encoding in the SRH can be achieved without any change to the=C2=A0SRv6=C2=
=A0data plane or control plane. The new=C2=A0draft=C2=A0link is as follows:=
</span><br>
<br>
</span><a href=3D"https://nam11.safelinks.protection.outlook.com/?url=3Dhtt=
ps%3A%2F%2Fwww.ietf.org%2Finternet-drafts%2Fdraft-filsfilscheng-spring-srv6=
-srh-comp-sl-enc-01.txt&amp;data=3D02%7C01%7Cjames.n.guichard%40futurewei.c=
om%7Cc2ddaad6243b42b9984a08d81b023111%7C0fee8ff2a3b240189c753a1d5591fedc%7C=
1%7C0%7C637289043518585891&amp;sdata=3DeiWyVoACjJakye5Yc8vFnr6L1DsMVEcEhMSV=
eQUAGBI%3D&amp;reserved=3D0" target=3D"_blank"><span style=3D"border:1pt no=
ne windowtext;padding:0in;color:rgb(66,133,244)">https://www.ietf.org/inter=
net-drafts/draft-filsfilscheng-spring-srv6-srh-comp-sl-enc-01.txt</span></a=
><span style=3D"color:rgb(49,49,49)"><br>
<br>
<span style=3D"border:1pt none windowtext;padding:0in">In this=C2=A0draft, =
we leverage the notions of=C2=A0SIDfunction and argument defined in=C2=A0dr=
aft-ietf-spring-srv6-network-programming to=C2=A0compress=C2=A0the=C2=A0SRv=
6Segment List encoding in the SRH. The=C2=A0compressed=C2=A0encoding is
 achieved through two new flavors of the base Network Programming behaviors=
 (End, End.X and End.T), named NEXT-C-SID=C2=A0and REPLACE-C-SID.</span><u>=
</u><u></u></span></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">Sent from my iPhone<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><br>
<br>
<u></u><u></u></p>
<blockquote style=3D"margin-top:5pt;margin-bottom:5pt">
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt">On Jun 27, 2020, at 7:4=
5 PM, Ron Bonica &lt;rbonica=3D<a href=3D"mailto:40juniper.net@dmarc.ietf.o=
rg" target=3D"_blank">40juniper.net@dmarc.ietf.org</a>&gt; wrote:<u></u><u>=
</u></p>
</blockquote>
</div>
<blockquote style=3D"margin-top:5pt;margin-bottom:5pt">
<div>
<p class=3D"MsoNormal">=EF=BB=BF <u></u><u></u></p>
</div>
</blockquote>
</div>
</div>
<div>
<div>
<blockquote style=3D"margin-top:5pt;margin-bottom:5pt">
<div>
<div>
<p class=3D"MsoNormal">Darren,<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Your draft purports to be an =E2=80=9CSRv6 Network P=
rogramming Overhead Analysis=E2=80=9D.=C2=A0 As such, it should address ove=
rhead analysis and avoid:<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<ul type=3D"disc">
<li class=3D"MsoNormal">
Topics that are orthogonal to overhead analysis<u></u><u></u></li><li class=
=3D"MsoNormal">
The appearance of attempting to position one compression strategy over anot=
her for reasons other than overhead<u></u><u></u></li></ul>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">So, I recommend that you make the following changes =
to Section 5:<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<ul type=3D"disc">
<li class=3D"MsoNormal">
The sentence =E2=80=9CThe mapping proposal, [I-D.bonica-spring-sr-mapped-si=
x], does not bring any compression benefit compared to SRv6-native compress=
ion methods [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]=E2=80=9D gives =
the appearance of author bias. Please replaces it
 with a neutral sentence like, =E2=80=9CThe two =C2=A0proposals [I-D.filsfi=
lscheng-spring-srv6-srh-comp-sl-enc] [I-D.bonica-spring-sr-mapped-six] prov=
ide similar compression.<u></u><u></u></li><li class=3D"MsoNormal">
You say that =E2=80=9D The SRm6 proposal does have several deficiencies how=
ever, including:=E2=80=9D=E2=80=A6. None of these have anything to do with =
overhead analysis. They don=E2=80=99t belong in this document.<u></u><u></u=
></li><li class=3D"MsoNormal">
Also, many of the things that you say in that bullet list are blatantly fal=
se. For example, SRm6 does not introduce a new data plane. In is extremely =
orthodox IPv6.
<u></u><u></u></li></ul>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Ron<u></u><=
u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p align=3D"center" style=3D"margin:0in 0in 0.0001pt;text-align:center"><sp=
an style=3D"font-size:7pt;color:black">Juniper Business Use Only</span><u><=
/u><u></u></p>
<div>
<div style=3D"border-style:solid none none;border-top-width:1pt;padding:3pt=
 0in 0in;border-top-color:rgb(225,225,225)">
<p class=3D"MsoNormal"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bou=
nces@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Saturday, June 27, 2020 1:22 AM<br>
<b>To:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blan=
k">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> [spring] Fw: New Version Notification for draft-dukes-sprin=
g-srv6-overhead-analysis-00.txt<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal" style=3D"line-height:12pt;background-color:rgb(255,2=
35,156)">
<b><span style=3D"font-size:10.5pt;font-family:Lato;color:black">[External =
Email. Be cautious of content]</span></b><u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">Hello SPR=
ING working group</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">=C2=A0</s=
pan><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">There has=
 been lots of work done in SPRING to develop, combine and refine methods of=
 reducing the overhead of the SRv6 SRH.=C2=A0 We have some
 good submissions of requirements, framework analysis but no direct compari=
sons of different methods.</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">=C2=A0</s=
pan><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">This draf=
t kicks off that conversation with a simple analysis comparing SRv6 native =
compression available via draft-filsfilscheng-spring-srv6-srh-comp-sl-enc=
=C2=A0vs
 the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.</span><u></u><=
u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">=C2=A0</s=
pan><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">=C2=A0</s=
pan><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">Thanks</s=
pan><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">=C2=A0 Da=
rren</span><u></u><u></u></p>
</div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt"><span style=3D"font-siz=
e:12pt;color:black">=C2=A0</span><u></u><u></u></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">=C2=A0</s=
pan><u></u><u></u></p>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"m_-5233827659612473564m_-7065254237394334895divRplyFwdMsg">
<p class=3D"MsoNormal"><b><span style=3D"color:black">From:</span></b><span=
 style=3D"color:black">
</span><a href=3D"mailto:internet-drafts@ietf.org" target=3D"_blank">intern=
et-drafts@ietf.org</a><span style=3D"color:black"> &lt;</span><a href=3D"ma=
ilto:internet-drafts@ietf.org" target=3D"_blank">internet-drafts@ietf.org</=
a><span style=3D"color:black">&gt;<br>
<b>Sent:</b> Saturday, June 27, 2020 1:00 AM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;</span><a href=3D"mailto:ddukes@cisco.=
com" target=3D"_blank">ddukes@cisco.com</a><span style=3D"color:black">&gt;=
<br>
<b>Subject:</b> New Version Notification for draft-dukes-spring-srv6-overhe=
ad-analysis-00.txt</span>
<u></u><u></u></p>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
</div>
<div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt"><br>
A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt<br>
has been successfully submitted by Darren Dukes and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 draft-duk=
es-spring-srv6-overhead-analysis<br>
Revision:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 00<br>
Title:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 SRv6 Network P=
rogramming Overhead Analysis<br>
Document date:=C2=A0 2020-06-27<br>
Group:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Individual Sub=
mission<br>
Pages:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 9<br>
URL:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <a h=
ref=3D"https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2F=
urldefense.com%2Fv3%2F__https%3A%2Fwww.ietf.org%2Finternet-drafts%2Fdraft-d=
ukes-spring-srv6-overhead-analysis-00.txt__%3B!!NEt6yMaO-gk!XQ30Nxg22KtJi8i=
kwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4%24&amp;data=3D02%7C01%7Cj=
ames.n.guichard%40futurewei.com%7Cc2ddaad6243b42b9984a08d81b023111%7C0fee8f=
f2a3b240189c753a1d5591fedc%7C1%7C0%7C637289043518585891&amp;sdata=3D4YF%2Bj=
3nWlM0mf63hQgSmnADiPyv7LP9UhPHVTNcGUFI%3D&amp;reserved=3D0" target=3D"_blan=
k">
https://www.ietf.org/internet-drafts/draft-dukes-spring-srv6-overhead-analy=
sis-00.txt</a><br>
Status:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <a href=3D"https://=
nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Furldefense.com%=
2Fv3%2F__https%3A%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-dukes-spring-srv6-ov=
erhead-analysis%2F__%3B!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJY=
kMVwpqxc8PEt_xKQSRjOMg93gm%24&amp;data=3D02%7C01%7Cjames.n.guichard%40futur=
ewei.com%7Cc2ddaad6243b42b9984a08d81b023111%7C0fee8ff2a3b240189c753a1d5591f=
edc%7C1%7C0%7C637289043518585891&amp;sdata=3DyJNsY1WzDbAEhWkewAmuyfaJxZdYit=
lU%2BQhUyMqyUSI%3D&amp;reserved=3D0" target=3D"_blank">
https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-overhead-analysis/=
</a><br>
Htmlized:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <a href=3D"https://urldefense=
...com/v3/__https:/tools.ietf..org/html/draft-dukes-spring-srv6-overhead-an=
alysis-00__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PE=
t_xKQSRjH9AbgoR$" target=3D"_blank">
https://tools.ietf.org/html/draft-dukes-spring-srv6-overhead-analysis-00</a=
><br>
Htmlized:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <a href=3D"https://urldefense=
...com/v3/__https:/datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-ov=
erhead-analysis__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwp=
qxc8PEt_xKQSRjOjtZl8r$" target=3D"_blank">
https://datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-anal=
ysis</a><br>
<br>
<br>
Abstract:<br>
=C2=A0=C2=A0 SRv6 network programming provides the framework for the best<b=
r>
=C2=A0=C2=A0 compression of an IPv6 header within an SR domain.=C2=A0 This =
document<br>
=C2=A0=C2=A0 provides the analysis to illustrate this fact.<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0<br>
The IETF Secretariat<u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>
<p class=3D"MsoNormal">_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2=
F%2Fwww.ietf.org%2Fmailman%2Flistinfo%2Fspring&amp;data=3D02%7C01%7Cjames.n=
.guichard%40futurewei.com%7Cc2ddaad6243b42b9984a08d81b023111%7C0fee8ff2a3b2=
40189c753a1d5591fedc%7C1%7C0%7C637289043518595889&amp;sdata=3Dwg9dF%2F%2FQb=
Q6a06DdTYObINRJ3BhqkH%2FAeR2ZejyzN54%3D&amp;reserved=3D0" target=3D"_blank"=
>https://www.ietf.org/mailman/listinfo/spring</a><u></u><u></u></p>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>
<p class=3D"MsoNormal">-- <u></u><u></u></p>
</div></div><div lang=3D"EN-US" link=3D"blue" vlink=3D"purple"><div class=
=3D"m_-5233827659612473564WordSection1"><div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<p><a href=3D"https://nam11.safelinks.protection.outlook.com/?url=3Dhttp%3A=
%2F%2Fwww.verizon.com%2F&amp;data=3D02%7C01%7Cjames.n.guichard%40futurewei.=
com%7Cc2ddaad6243b42b9984a08d81b023111%7C0fee8ff2a3b240189c753a1d5591fedc%7=
C1%7C0%7C637289043518595889&amp;sdata=3DZyou1NC%2FYObph6JwHpSO%2BMzFxNfcd1B=
kgKVufWDjqR0%3D&amp;reserved=3D0" target=3D"_blank"><span style=3D"border:1=
pt solid windowtext;padding:0in;text-decoration:none;color:rgb(17,85,204)">=
<img border=3D"0" src=3D"cid:172feca554b4cd34f0f1" alt=3D"Image removed by =
sender." style=3D"width: 81px; max-width: 100%;"></span></a><span style=3D"=
color:rgb(34,34,34)"><u></u><u></u></span></p></div></div></div></div></div=
></div></div></div></div></div></div><div lang=3D"EN-US" link=3D"blue" vlin=
k=3D"purple"><div class=3D"m_-5233827659612473564WordSection1"><div><div><d=
iv><div><div><div><div><div><div>
<p style=3D"margin:0in 0in 0.0001pt"><b><span style=3D"font-family:Arial,sa=
ns-serif;color:black">Gyan Mishra</span></b><span style=3D"font-family:Aria=
l,sans-serif;color:black"><u style=3D"font-family:Arial,sans-serif"></u><u =
style=3D"font-family:Arial,sans-serif"></u></span></p><a href=3D"https://ww=
w.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Silver+Spring,+MD?entry=
=3Dgmail&amp;source=3Dg">
</a><p style=3D"margin:0in 0in 0.0001pt"><i><span style=3D"font-family:Geor=
gia,serif;color:black">Network Solutions Architect=C2=A0</span></i><span st=
yle=3D"color:rgb(34,34,34)"><u></u><u></u></span></p>
<p style=3D"margin:0in 0in 0.0001pt"><i><span style=3D"font-family:Georgia,=
serif;color:black">M 301 502-1347<br>
<a href=3D"https://www.google.com/maps/search/13101+Columbia+Pike+%0D%0A+Si=
lver+Spring,+MD?entry=3Dgmail&amp;source=3Dg" style=3D"font-family:Georgia,=
serif">13101 Columbia Pike</a>=C2=A0<br>
</span></i><span style=3D"color:black"><a href=3D"https://www.google.com/ma=
ps/search/13101+Columbia+Pike+%0D%0A+Silver+Spring,+MD?entry=3Dgmail&amp;so=
urce=3Dg">Silver Spring, MD</a><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>

</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"l=
tr"><div><p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com=
/" style=3D"color:rgb(17,85,204);padding-bottom:1em;display:inline-block" t=
arget=3D"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz=
-logo-email" width=3D"81" height=3D"18" style=3D"height:18px;width:81px"></=
a><br></p><p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NH=
G DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b=
></p><p style=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font fac=
e=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutio=
ns A</i></font><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=
=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px;line-height:13px;=
color:black"><i><font face=3D"georgia, serif">M 301 502-1347<br>13101 Colum=
bia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div></di=
v></div></div></div></div></div></div></div>

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From: "Joel M. Halpern" <jmh@joelhalpern.com>
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Date: Mon, 29 Jun 2020 18:17:36 -0400
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Subject: [spring] Understanding the replication draft
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I asked the authors a version of this question, but apparently my 
request got lost.

For now, this is speaking as an individual.  And I sincerely hope that I 
am merely missing something obvious.

I can not figure out from the current draft how the replication segment 
works in a SID (or label) stack.
Is there an unstated requirement that the segment must be the last one 
in the stack?
If not, how is a global SID after teh replication SID understood?
Or is a replication SID implicitly also a binding SID, replacing the 
rest of the stack no matter where it is in the stack?
    In which case it is implicitly effectively last?
Given taht a replication segment is qualified to a node, what happens if 
there is more than one in a stack?  Is it ignored when it hits a node it 
does not apply to?

Do I believe this can be made to work?  Yes.
But I can not understand how the WG could adopt the work with its 
current lack of clarity.
And this appears to me to be fundamental enough stuff that it can't be 
left to documents in other WGs.  It seems central to the definition and 
processing of replication SIDs.


Yours,
Joel - speaking as a participant


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From: "Darren Dukes (ddukes)" <ddukes@cisco.com>
To: Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>, SPRING WG <spring@ietf.org>
Thread-Topic: New Version Notification for draft-dukes-spring-srv6-overhead-analysis-00.txt
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Subject: Re: [spring] New Version Notification for draft-dukes-spring-srv6-overhead-analysis-00.txt
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--_000_BN6PR11MB40818331A559B946CA6E612CC86F0BN6PR11MB4081namp_
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Hi Ron. Thanks for reading the document.

You say about section 5:
> Also, many of the things that you say in that
> bullet list are blatantly false. For example,
> SRm6 does not introduce a new data plane.
> In is extremely orthodox IPv6.

SRm6 uses IPv6 for transport and it introduces a dataplane that maps 32 or =
16 bit identifiers to a behavior and IPv6 address. Every SRm6 node must use=
 this new dataplane implementation.  This is correct.

I believe the bullets I listed are relevant when holistically considering t=
he proposals.

Sincerely,
  Darren


________________________________
From: Ron Bonica <rbonica=3D40juniper.net@dmarc.ietf.org>
Sent: Saturday, June 27, 2020 7:44:47 PM
To: Darren Dukes (ddukes) <ddukes@cisco.com>; SPRING WG <spring@ietf.org>
Subject: RE: New Version Notification for draft-dukes-spring-srv6-overhead-=
analysis-00.txt


Darren,



Your draft purports to be an =93SRv6 Network Programming Overhead Analysis=
=94.  As such, it should address overhead analysis and avoid:



  *   Topics that are orthogonal to overhead analysis
  *   The appearance of attempting to position one compression strategy ove=
r another for reasons other than overhead



So, I recommend that you make the following changes to Section 5:



  *   The sentence =93The mapping proposal, [I-D.bonica-spring-sr-mapped-si=
x], does not bring any compression benefit compared to SRv6-native compress=
ion methods [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]=94 gives the ap=
pearance of author bias. Please replaces it with a neutral sentence like, =
=93The two  proposals [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc] [I-D.=
bonica-spring-sr-mapped-six] provide similar compression.
  *   You say that =94 The SRm6 proposal does have several deficiencies how=
ever, including:=94=85. None of these have anything to do with overhead ana=
lysis. They don=92t belong in this document.
  *   Also, many of the things that you say in that bullet list are blatant=
ly false. For example, SRm6 does not introduce a new data plane. In is extr=
emely orthodox IPv6.



                                                                           =
                                             Ron









Juniper Business Use Only

From: spring <spring-bounces@ietf.org> On Behalf Of Darren Dukes (ddukes)
Sent: Saturday, June 27, 2020 1:22 AM
To: SPRING WG <spring@ietf.org>
Subject: [spring] Fw: New Version Notification for draft-dukes-spring-srv6-=
overhead-analysis-00.txt



[External Email. Be cautious of content]



Hello SPRING working group



There has been lots of work done in SPRING to develop, combine and refine m=
ethods of reducing the overhead of the SRv6 SRH.  We have some good submiss=
ions of requirements, framework analysis but no direct comparisons of diffe=
rent methods.



This draft kicks off that conversation with a simple analysis comparing SRv=
6 native compression available via draft-filsfilscheng-spring-srv6-srh-comp=
-sl-enc vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.





Thanks

  Darren





________________________________

From: internet-drafts@ietf.org<mailto:internet-drafts@ietf.org> <internet-d=
rafts@ietf.org<mailto:internet-drafts@ietf.org>>
Sent: Saturday, June 27, 2020 1:00 AM
To: Darren Dukes (ddukes) <ddukes@cisco.com<mailto:ddukes@cisco.com>>
Subject: New Version Notification for draft-dukes-spring-srv6-overhead-anal=
ysis-00.txt



A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt
has been successfully submitted by Darren Dukes and posted to the
IETF repository.

Name:           draft-dukes-spring-srv6-overhead-analysis
Revision:       00
Title:          SRv6 Network Programming Overhead Analysis
Document date:  2020-06-27
Group:          Individual Submission
Pages:          9
URL:            https://www.ietf.org/internet-drafts/draft-dukes-spring-srv=
6-overhead-analysis-00.txt<https://urldefense.com/v3/__https:/www.ietf.org/=
internet-drafts/draft-dukes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yM=
aO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$>
Status:         https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-ov=
erhead-analysis/<https://urldefense.com/v3/__https:/datatracker.ietf.org/do=
c/draft-dukes-spring-srv6-overhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8=
ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjOMg93gm$>
Htmlized:       https://tools.ietf.org/html/draft-dukes-spring-srv6-overhea=
d-analysis-00<https://urldefense..com/v3/__https:/tools.ietf..org/html/draf=
t-dukes-spring-srv6-overhead-analysis-00__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwl=
kNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjH9AbgoR$>
Htmlized:       https://datatracker.ietf.org/doc/html/draft-dukes-spring-sr=
v6-overhead-analysis<https://urldefense..com/v3/__https:/datatracker.ietf.o=
rg/doc/html/draft-dukes-spring-srv6-overhead-analysis__;!!NEt6yMaO-gk!XQ30N=
xg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjOjtZl8r$>


Abstract:
   SRv6 network programming provides the framework for the best
   compression of an IPv6 header within an SR domain.  This document
   provides the analysis to illustrate this fact.


The IETF Secretariat

--_000_BN6PR11MB40818331A559B946CA6E612CC86F0BN6PR11MB4081namp_
Content-Type: text/html; charset="Windows-1252"
Content-Transfer-Encoding: quoted-printable

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<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DWindows-1=
252">
</head>
<body>
<div dir=3D"ltr">
<div></div>
<div>
<div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
Hi Ron. Thanks for reading the document.&nbsp;</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
<br>
</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
You say about section 5:</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
&gt; Also, many of the things that you say in that&nbsp;</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
&gt; bullet list are blatantly false. For example,&nbsp;</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
&gt; SRm6 does not introduce a new data plane.&nbsp;</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
&gt; In is extremely orthodox IPv6.<br>
</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
<br>
</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
SRm6 uses IPv6 for transport and it introduces a dataplane that maps 32 or =
16 bit identifiers to a behavior and IPv6 address. Every SRm6 node must use=
 this new dataplane implementation. &nbsp;This is correct.&nbsp;</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
<span style=3D"font-size: inherit;"><br>
</span></div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
<span style=3D"font-size: inherit;">I believe the bullets I listed are rele=
vant when holistically considering the proposals.</span></div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
<br>
</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
Sincerely,</div>
<div dir=3D"ltr" style=3D"caret-color: rgb(0, 0, 0); font-family: -apple-sy=
stem, HelveticaNeue">
&nbsp; Darren</div>
<br>
</div>
<div><br>
</div>
<div class=3D"ms-outlook-ios-signature"></div>
</div>
</div>
<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st=
yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Ron Bonica &lt;rbonic=
a=3D40juniper.net@dmarc.ietf.org&gt;<br>
<b>Sent:</b> Saturday, June 27, 2020 7:44:47 PM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;ddukes@cisco.com&gt;; SPRING WG &lt;sp=
ring@ietf.org&gt;<br>
<b>Subject:</b> RE: New Version Notification for draft-dukes-spring-srv6-ov=
erhead-analysis-00.txt</font>
<div>&nbsp;</div>
</div>
<style>
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<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"x_WordSection1">
<p class=3D"x_MsoNormal">Darren,</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal">Your draft purports to be an =93SRv6 Network Progr=
amming Overhead Analysis=94. &nbsp;As such, it should address overhead anal=
ysis and avoid:</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<ul type=3D"disc" style=3D"margin-top:0in">
<li class=3D"x_MsoListParagraph" style=3D"margin-left:0in; mso-list:l0 leve=
l1 lfo3">Topics that are orthogonal to overhead analysis</li><li class=3D"x=
_MsoListParagraph" style=3D"margin-left:0in; mso-list:l0 level1 lfo3">The a=
ppearance of attempting to position one compression strategy over another f=
or reasons other than overhead</li></ul>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal">So, I recommend that you make the following change=
s to Section 5:</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<ul type=3D"disc" style=3D"margin-top:0in">
<li class=3D"x_MsoListParagraph" style=3D"margin-left:0in; mso-list:l0 leve=
l1 lfo3">The sentence =93The mapping proposal, [I-D.bonica-spring-sr-mapped=
-six], does not bring any compression benefit compared to SRv6-native compr=
ession methods [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]=94
 gives the appearance of author bias. Please replaces it with a neutral sen=
tence like, =93The two &nbsp;proposals [I-D.filsfilscheng-spring-srv6-srh-c=
omp-sl-enc] [I-D.bonica-spring-sr-mapped-six] provide similar compression.<=
/li><li class=3D"x_MsoListParagraph" style=3D"margin-left:0in; mso-list:l0 =
level1 lfo3">You say that =94 The SRm6 proposal does have several deficienc=
ies however, including:=94=85. None of these have anything to do with overh=
ead analysis. They don=92t belong in this document.</li><li class=3D"x_MsoL=
istParagraph" style=3D"margin-left:0in; mso-list:l0 level1 lfo3">Also, many=
 of the things that you say in that bullet list are blatantly false. For ex=
ample, SRm6 does not introduce a new data plane. In is extremely orthodox I=
Pv6.
</li></ul>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ron</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_msipfooter30b3d538" align=3D"center" style=3D"margin:0in; mar=
gin-bottom:.0001pt; text-align:center">
<span style=3D"font-size:7.0pt; color:black">Juniper Business Use Only</spa=
n></p>
<div>
<div style=3D"border:none; border-top:solid #E1E1E1 1.0pt; padding:3.0pt 0i=
n 0in 0in">
<p class=3D"x_MsoNormal"><b>From:</b> spring &lt;spring-bounces@ietf.org&gt=
; <b>On Behalf Of
</b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Saturday, June 27, 2020 1:22 AM<br>
<b>To:</b> SPRING WG &lt;spring@ietf.org&gt;<br>
<b>Subject:</b> [spring] Fw: New Version Notification for draft-dukes-sprin=
g-srv6-overhead-analysis-00.txt</p>
</div>
</div>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal" style=3D"line-height:12.0pt; background:#FFEB9C"><=
b><span style=3D"font-size:10.5pt; font-family:&quot;Lato&quot;,sans-serif;=
 color:black">[External Email. Be cautious of content]</span></b></p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<div>
<div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-size:12.0pt; color:black">Hell=
o SPRING working group</span></p>
</div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-size:12.0pt; color:black">&nbs=
p;</span></p>
</div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-size:12.0pt; color:black">Ther=
e has been lots of work done in SPRING to develop, combine and refine metho=
ds of reducing the overhead of the SRv6 SRH. &nbsp;We have some good submis=
sions of requirements, framework analysis
 but no direct comparisons of different methods.</span></p>
</div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-size:12.0pt; color:black">&nbs=
p;</span></p>
</div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-size:12.0pt; color:black">This=
 draft kicks off that conversation with a simple analysis comparing SRv6 na=
tive compression available via draft-filsfilscheng-spring-srv6-srh-comp-sl-=
enc&nbsp;vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.</sp=
an></p>
</div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-size:12.0pt; color:black">&nbs=
p;</span></p>
</div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-size:12.0pt; color:black">&nbs=
p;</span></p>
</div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-size:12.0pt; color:black">Than=
ks</span></p>
</div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-size:12.0pt; color:black">&nbs=
p; Darren</span></p>
</div>
<p class=3D"x_MsoNormal" style=3D"margin-bottom:12.0pt"><span style=3D"font=
-size:12.0pt; color:black">&nbsp;</span></p>
</div>
<div>
<div>
<p class=3D"x_MsoNormal"><span style=3D"font-size:12.0pt; color:black">&nbs=
p;</span></p>
</div>
<div class=3D"x_MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"x_divRplyFwdMsg">
<p class=3D"x_MsoNormal"><b><span style=3D"color:black">From:</span></b><sp=
an style=3D"color:black">
<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a> &l=
t;<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a>&=
gt;<br>
<b>Sent:</b> Saturday, June 27, 2020 1:00 AM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com">dd=
ukes@cisco.com</a>&gt;<br>
<b>Subject:</b> New Version Notification for draft-dukes-spring-srv6-overhe=
ad-analysis-00.txt</span>
</p>
<div>
<p class=3D"x_MsoNormal">&nbsp;</p>
</div>
</div>
<div>
<div>
<p class=3D"x_MsoNormal" style=3D"margin-bottom:12.0pt"><br>
A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt<br>
has been successfully submitted by Darren Dukes and posted to the<br>
IETF repository.<br>
<br>
Name:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; draft-duk=
es-spring-srv6-overhead-analysis<br>
Revision:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 00<br>
Title:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; SRv6 Network P=
rogramming Overhead Analysis<br>
Document date:&nbsp; 2020-06-27<br>
Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Individual Sub=
mission<br>
Pages:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9<br>
URL:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a h=
ref=3D"https://urldefense.com/v3/__https:/www.ietf.org/internet-drafts/draf=
t-dukes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8=
ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$">
https://www.ietf.org/internet-drafts/draft-dukes-spring-srv6-overhead-analy=
sis-00.txt</a><br>
Status:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://=
urldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-dukes-spring-srv6=
-overhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYk=
MVwpqxc8PEt_xKQSRjOMg93gm$">
https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-overhead-analysis/=
</a><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://urldefense=
..com/v3/__https:/tools.ietf..org/html/draft-dukes-spring-srv6-overhead-ana=
lysis-00__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt=
_xKQSRjH9AbgoR$">
https://tools.ietf.org/html/draft-dukes-spring-srv6-overhead-analysis-00</a=
><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://urldefense=
..com/v3/__https:/datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-ove=
rhead-analysis__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpq=
xc8PEt_xKQSRjOjtZl8r$">
https://datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-anal=
ysis</a><br>
<br>
<br>
Abstract:<br>
&nbsp;&nbsp; SRv6 network programming provides the framework for the best<b=
r>
&nbsp;&nbsp; compression of an IPv6 header within an SR domain.&nbsp; This =
document<br>
&nbsp;&nbsp; provides the analysis to illustrate this fact.<br>
<br>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>
The IETF Secretariat</p>
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From: Ron Bonica <rbonica@juniper.net>
To: "Darren Dukes (ddukes)" <ddukes=40cisco.com@dmarc.ietf.org>, SPRING WG <spring@ietf.org>
Thread-Topic: New Version Notification for draft-dukes-spring-srv6-overhead-analysis-00.txt
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/FDgrxLHLORabqx98Db0y4mWShjw>
Subject: Re: [spring] New Version Notification for draft-dukes-spring-srv6-overhead-analysis-00.txt
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--_000_DM6PR05MB6348F3395AF5E5E22DB5F943AE6F0DM6PR05MB6348namp_
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Darren,

The 6man WG is responsible for exactly one data plane. That is, IPv6.

IPv6 is extensible. So, new Routing headers and Options can be defined  wit=
hout creating a new data plane. That's the whole idea of IPv6 extensibility=
. Do you believe new data planes were created when the following were defin=
ed:


  *   The NIMROD Routing header
  *   They Type 2 Routing header
  *   The RPL Routing header
  *   The Segment Routing Header

Also, the bullets under discussion have little to do with an "SRv6 Network =
Programming Overhead Analysis".

If your real goal is holistic comparison of SRm6 and draft-filfilscheng-srv=
6-srh-comp-sl-eng, I would be glad to work with you on that. But a holistic=
 comparison should probably have representation from both sides. Otherwise,=
 it is mere marketing.

                                                    Ron



Juniper Business Use Only
From: Darren Dukes (ddukes) <ddukes=3D40cisco.com@dmarc.ietf.org>
Sent: Monday, June 29, 2020 9:33 PM
To: Ron Bonica <rbonica@juniper.net>; SPRING WG <spring@ietf.org>
Subject: Re: New Version Notification for draft-dukes-spring-srv6-overhead-=
analysis-00.txt

[External Email. Be cautious of content]

Hi Ron. Thanks for reading the document.

You say about section 5:
> Also, many of the things that you say in that
> bullet list are blatantly false. For example,
> SRm6 does not introduce a new data plane.
> In is extremely orthodox IPv6.

SRm6 uses IPv6 for transport and it introduces a dataplane that maps 32 or =
16 bit identifiers to a behavior and IPv6 address. Every SRm6 node must use=
 this new dataplane implementation.  This is correct.

I believe the bullets I listed are relevant when holistically considering t=
he proposals.

Sincerely,
  Darren


________________________________
From: Ron Bonica <rbonica=3D40juniper.net@dmarc.ietf.org<mailto:rbonica=3D4=
0juniper.net@dmarc.ietf.org>>
Sent: Saturday, June 27, 2020 7:44:47 PM
To: Darren Dukes (ddukes) <ddukes@cisco.com<mailto:ddukes@cisco.com>>; SPRI=
NG WG <spring@ietf.org<mailto:spring@ietf.org>>
Subject: RE: New Version Notification for draft-dukes-spring-srv6-overhead-=
analysis-00.txt


Darren,



Your draft purports to be an "SRv6 Network Programming Overhead Analysis". =
 As such, it should address overhead analysis and avoid:



  *   Topics that are orthogonal to overhead analysis
  *   The appearance of attempting to position one compression strategy ove=
r another for reasons other than overhead



So, I recommend that you make the following changes to Section 5:



  *   The sentence "The mapping proposal, [I-D.bonica-spring-sr-mapped-six]=
, does not bring any compression benefit compared to SRv6-native compressio=
n methods [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]" gives the appear=
ance of author bias. Please replaces it with a neutral sentence like, "The =
two  proposals [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc] [I-D.bonica-=
spring-sr-mapped-six] provide similar compression.
  *   You say that " The SRm6 proposal does have several deficiencies howev=
er, including:".... None of these have anything to do with overhead analysi=
s. They don't belong in this document.
  *   Also, many of the things that you say in that bullet list are blatant=
ly false. For example, SRm6 does not introduce a new data plane. In is extr=
emely orthodox IPv6.



                                                                           =
                                             Ron









Juniper Business Use Only

From: spring <spring-bounces@ietf.org<mailto:spring-bounces@ietf.org>> On B=
ehalf Of Darren Dukes (ddukes)
Sent: Saturday, June 27, 2020 1:22 AM
To: SPRING WG <spring@ietf.org<mailto:spring@ietf.org>>
Subject: [spring] Fw: New Version Notification for draft-dukes-spring-srv6-=
overhead-analysis-00.txt



[External Email. Be cautious of content]



Hello SPRING working group



There has been lots of work done in SPRING to develop, combine and refine m=
ethods of reducing the overhead of the SRv6 SRH.  We have some good submiss=
ions of requirements, framework analysis but no direct comparisons of diffe=
rent methods.



This draft kicks off that conversation with a simple analysis comparing SRv=
6 native compression available via draft-filsfilscheng-spring-srv6-srh-comp=
-sl-enc vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.





Thanks

  Darren





________________________________

From: internet-drafts@ietf.org<mailto:internet-drafts@ietf.org> <internet-d=
rafts@ietf.org<mailto:internet-drafts@ietf.org>>
Sent: Saturday, June 27, 2020 1:00 AM
To: Darren Dukes (ddukes) <ddukes@cisco.com<mailto:ddukes@cisco.com>>
Subject: New Version Notification for draft-dukes-spring-srv6-overhead-anal=
ysis-00.txt



A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt
has been successfully submitted by Darren Dukes and posted to the
IETF repository.

Name:           draft-dukes-spring-srv6-overhead-analysis
Revision:       00
Title:          SRv6 Network Programming Overhead Analysis
Document date:  2020-06-27
Group:          Individual Submission
Pages:          9
URL:            https://www.ietf.org/internet-drafts/draft-dukes-spring-srv=
6-overhead-analysis-00.txt<https://urldefense.com/v3/__https:/www.ietf.org/=
internet-drafts/draft-dukes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yM=
aO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$>
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c/draft-dukes-spring-srv6-overhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8=
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d-analysis-00<https://urldefense.com/v3/__https:/urldefense...com/v3/__http=
s:/tools.ietf..org/html/draft-dukes-spring-srv6-overhead-analysis-00__;!!NE=
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/__https:/datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-an=
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8FX6z6L4BIiAXN2pMyI$>


Abstract:
   SRv6 network programming provides the framework for the best
   compression of an IPv6 header within an SR domain.  This document
   provides the analysis to illustrate this fact.


The IETF Secretariat

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</head>
<body lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">Darren,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">The 6man WG is responsible for exactly one data plan=
e. That is, IPv6.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">IPv6 is extensible. So, new Routing headers and Opti=
ons can be defined &nbsp;without creating a new data plane. That&#8217;s th=
e whole idea of IPv6 extensibility. Do you believe new data planes were cre=
ated when the following were defined:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l2 level1 =
lfo3">The NIMROD Routing header<o:p></o:p></li><li class=3D"MsoListParagrap=
h" style=3D"margin-left:0in;mso-list:l2 level1 lfo3">They Type 2 Routing he=
ader<o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"margin-left:0in=
;mso-list:l2 level1 lfo3">The RPL Routing header<o:p></o:p></li><li class=
=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l2 level1 lfo3">The=
 Segment Routing Header<o:p></o:p></li></ul>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Also, the bullets under discussion have little to do=
 with an &#8220;SRv6 Network Programming Overhead Analysis&#8221;.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">If your real goal is holistic comparison of SRm6 and=
 draft-filfilscheng-srv6-srh-comp-sl-eng, I would be glad to work with you =
on that. But a holistic comparison should probably have representation from=
 both sides. Otherwise, it is mere
 marketing.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> Darren Dukes (ddukes) &lt;ddukes=3D40ci=
sco.com@dmarc.ietf.org&gt;
<br>
<b>Sent:</b> Monday, June 29, 2020 9:33 PM<br>
<b>To:</b> Ron Bonica &lt;rbonica@juniper.net&gt;; SPRING WG &lt;spring@iet=
f.org&gt;<br>
<b>Subject:</b> Re: New Version Notification for draft-dukes-spring-srv6-ov=
erhead-analysis-00.txt<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b><=
span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;colo=
r:black">[External Email. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">Hi Ron. Thanks for reading the document.&nbsp;<o:p></o:p></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">You say about section 5:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">&gt; Also, many of the things that you say in that&nbsp;<o:p></o:p>=
</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">&gt; bullet list are blatantly false. For example,&nbsp;<o:p></o:p>=
</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">&gt; SRm6 does not introduce a new data plane.&nbsp;<o:p></o:p></sp=
an></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">&gt; In is extremely orthodox IPv6.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">SRm6 uses IPv6 for transport and it introduces a dataplane that map=
s 32 or 16 bit identifiers to a behavior and IPv6 address. Every SRm6 node =
must use this new dataplane implementation. &nbsp;This
 is correct.&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><span style=3D"font-f=
amily:&quot;HelveticaNeue&quot;,serif"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">I believe the bullets I listed are relevant when holistically consi=
dering the proposals.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">Sincerely,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">&nbsp; Darren<o:p></o:p></span></p>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"divRplyFwdMsg">
<p class=3D"MsoNormal"><b><span style=3D"color:black">From:</span></b><span=
 style=3D"color:black"> Ron Bonica &lt;<a href=3D"mailto:rbonica=3D40junipe=
r.net@dmarc.ietf.org">rbonica=3D40juniper.net@dmarc.ietf.org</a>&gt;<br>
<b>Sent:</b> Saturday, June 27, 2020 7:44:47 PM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com">dd=
ukes@cisco.com</a>&gt;; SPRING WG &lt;<a href=3D"mailto:spring@ietf.org">sp=
ring@ietf.org</a>&gt;<br>
<b>Subject:</b> RE: New Version Notification for draft-dukes-spring-srv6-ov=
erhead-analysis-00.txt</span>
<o:p></o:p></p>
<div>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=3D"xmsonormal">Darren,<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">Your draft purports to be an &#8220;SRv6 Network Pr=
ogramming Overhead Analysis&#8221;. &nbsp;As such, it should address overhe=
ad analysis and avoid:<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"xmsolistparagraph" style=3D"margin-left:0in;mso-list:l5 level1=
 lfo6">Topics that are orthogonal to overhead analysis<o:p></o:p></li><li c=
lass=3D"xmsolistparagraph" style=3D"margin-left:0in;mso-list:l5 level1 lfo6=
">The appearance of attempting to position one compression strategy over an=
other for reasons other than overhead<o:p></o:p></li></ul>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">So, I recommend that you make the following changes=
 to Section 5:<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"xmsolistparagraph" style=3D"margin-left:0in;mso-list:l3 level1=
 lfo9">The sentence &#8220;The mapping proposal, [I-D.bonica-spring-sr-mapp=
ed-six], does not bring any compression benefit compared to SRv6-native com=
pression methods [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]&#8221;
 gives the appearance of author bias. Please replaces it with a neutral sen=
tence like, &#8220;The two &nbsp;proposals [I-D.filsfilscheng-spring-srv6-s=
rh-comp-sl-enc] [I-D.bonica-spring-sr-mapped-six] provide similar compressi=
on.<o:p></o:p></li><li class=3D"xmsolistparagraph" style=3D"margin-left:0in=
;mso-list:l3 level1 lfo9">You say that &#8221; The SRm6 proposal does have =
several deficiencies however, including:&#8221;&#8230;. None of these have =
anything to do with overhead analysis. They don&#8217;t belong in this docu=
ment.<o:p></o:p></li><li class=3D"xmsolistparagraph" style=3D"margin-left:0=
in;mso-list:l3 level1 lfo9">Also, many of the things that you say in that b=
ullet list are blatantly false. For example, SRm6 does not introduce a new =
data plane. In is extremely orthodox IPv6.
<o:p></o:p></li></ul>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ron<o:p></o=
:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsipfooter30b3d538" align=3D"center" style=3D"margin:0in;margi=
n-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"xmsonormal"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bo=
unces@ietf.org">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Saturday, June 27, 2020 1:22 AM<br>
<b>To:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org">spring@ietf.org=
</a>&gt;<br>
<b>Subject:</b> [spring] Fw: New Version Notification for draft-dukes-sprin=
g-srv6-overhead-analysis-00.txt<o:p></o:p></p>
</div>
</div>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b>=
<span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;col=
or:black">[External Email. Be cautious of content]</span></b><o:p></o:p></p=
>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<div>
<div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">Hello =
SPRING working group</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">There =
has been lots of work done in SPRING to develop, combine and refine methods=
 of reducing the overhead of the SRv6 SRH. &nbsp;We have some good submissi=
ons of requirements, framework analysis but
 no direct comparisons of different methods.</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">This d=
raft kicks off that conversation with a simple analysis comparing SRv6 nati=
ve compression available via draft-filsfilscheng-spring-srv6-srh-comp-sl-en=
c&nbsp;vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.</span=
><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">Thanks=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
 Darren</span><o:p></o:p></p>
</div>
<p class=3D"xmsonormal" style=3D"margin-bottom:12.0pt"><span style=3D"font-=
size:12.0pt;color:black">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"x_divRplyFwdMsg">
<p class=3D"xmsonormal"><b><span style=3D"color:black">From:</span></b><spa=
n style=3D"color:black">
<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a> &l=
t;<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a>&=
gt;<br>
<b>Sent:</b> Saturday, June 27, 2020 1:00 AM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com">dd=
ukes@cisco.com</a>&gt;<br>
<b>Subject:</b> New Version Notification for draft-dukes-spring-srv6-overhe=
ad-analysis-00.txt</span>
<o:p></o:p></p>
<div>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=3D"xmsonormal" style=3D"margin-bottom:12.0pt"><br>
A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt<br>
has been successfully submitted by Darren Dukes and posted to the<br>
IETF repository.<br>
<br>
Name:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; draft-duk=
es-spring-srv6-overhead-analysis<br>
Revision:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 00<br>
Title:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; SRv6 Network P=
rogramming Overhead Analysis<br>
Document date:&nbsp; 2020-06-27<br>
Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Individual Sub=
mission<br>
Pages:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9<br>
URL:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a h=
ref=3D"https://urldefense.com/v3/__https:/www.ietf.org/internet-drafts/draf=
t-dukes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8=
ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$">
https://www.ietf.org/internet-drafts/draft-dukes-spring-srv6-overhead-analy=
sis-00.txt</a><br>
Status:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://=
urldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-dukes-spring-srv6=
-overhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYk=
MVwpqxc8PEt_xKQSRjOMg93gm$">
https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-overhead-analysis/=
</a><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://urldefense=
.com/v3/__https:/urldefense...com/v3/__https:/tools.ietf..org/html/draft-du=
kes-spring-srv6-overhead-analysis-00__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqw=
rZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjH9AbgoR$__;!!NEt6yMaO-gk!QrTNpOov227mx78=
vk0QW9dUiezD-3jNSo7hrwU5wJzCSX8FX6z6L4BIiAYtsAIIb$">
https://tools.ietf.org/html/draft-dukes-spring-srv6-overhead-analysis-00</a=
><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://urldefense=
.com/v3/__https:/urldefense...com/v3/__https:/datatracker.ietf.org/doc/html=
/draft-dukes-spring-srv6-overhead-analysis__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ik=
wlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjOjtZl8r$__;!!NEt6yMaO-gk!QrTNpOov2=
27mx78vk0QW9dUiezD-3jNSo7hrwU5wJzCSX8FX6z6L4BIiAXN2pMyI$">
https://datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-anal=
ysis</a><br>
<br>
<br>
Abstract:<br>
&nbsp;&nbsp; SRv6 network programming provides the framework for the best<b=
r>
&nbsp;&nbsp; compression of an IPv6 header within an SR domain.&nbsp; This =
document<br>
&nbsp;&nbsp; provides the analysis to illustrate this fact.<br>
<br>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>
The IETF Secretariat<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>

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From: Vasilenko Eduard <vasilenko.eduard@huawei.com>
To: Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>, "Darren Dukes (ddukes)" <ddukes=40cisco.com@dmarc.ietf.org>, SPRING WG <spring@ietf.org>
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Hi Guru,
In my humble opinion statement that something compressed is not a new data =
plane could be a little wrong.
Genesis of the solution (all solutions comes from extension capabilities of=
 IPv6) could only permit to tell that it is "the same protocol", or more pr=
ecise "extension of the same protocol".
But if new forwarding table (with shorter labels) should be created in PFE =
- then it is probably new data plane. It occupies separate resources in dat=
a plane.
Eduard
From: spring [mailto:spring-bounces@ietf.org] On Behalf Of Ron Bonica
Sent: 30 =C9=C0=CE=D1 2020 =C7. 5:59
To: Darren Dukes (ddukes) <ddukes=3D40cisco.com@dmarc.ietf.org>; SPRING WG =
<spring@ietf.org>
Subject: Re: [spring] New Version Notification for draft-dukes-spring-srv6-=
overhead-analysis-00.txt

Darren,

The 6man WG is responsible for exactly one data plane. That is, IPv6.

IPv6 is extensible. So, new Routing headers and Options can be defined  wit=
hout creating a new data plane. That's the whole idea of IPv6 extensibility=
. Do you believe new data planes were created when the following were defin=
ed:

-        The NIMROD Routing header
-        They Type 2 Routing header
-        The RPL Routing header
-        The Segment Routing Header

Also, the bullets under discussion have little to do with an "SRv6 Network =
Programming Overhead Analysis".

If your real goal is holistic comparison of SRm6 and draft-filfilscheng-srv=
6-srh-comp-sl-eng, I would be glad to work with you on that. But a holistic=
 comparison should probably have representation from both sides. Otherwise,=
 it is mere marketing.

                                                    Ron



Juniper Business Use Only
From: Darren Dukes (ddukes) <ddukes=3D40cisco.com@dmarc.ietf.org<mailto:ddu=
kes=3D40cisco.com@dmarc.ietf.org>>
Sent: Monday, June 29, 2020 9:33 PM
To: Ron Bonica <rbonica@juniper.net<mailto:rbonica@juniper.net>>; SPRING WG=
 <spring@ietf.org<mailto:spring@ietf.org>>
Subject: Re: New Version Notification for draft-dukes-spring-srv6-overhead-=
analysis-00.txt

[External Email. Be cautious of content]

Hi Ron. Thanks for reading the document.

You say about section 5:
> Also, many of the things that you say in that
> bullet list are blatantly false. For example,
> SRm6 does not introduce a new data plane.
> In is extremely orthodox IPv6.

SRm6 uses IPv6 for transport and it introduces a dataplane that maps 32 or =
16 bit identifiers to a behavior and IPv6 address. Every SRm6 node must use=
 this new dataplane implementation.  This is correct.

I believe the bullets I listed are relevant when holistically considering t=
he proposals.

Sincerely,
  Darren


________________________________
From: Ron Bonica <rbonica=3D40juniper.net@dmarc.ietf.org<mailto:rbonica=3D4=
0juniper.net@dmarc.ietf.org>>
Sent: Saturday, June 27, 2020 7:44:47 PM
To: Darren Dukes (ddukes) <ddukes@cisco.com<mailto:ddukes@cisco.com>>; SPRI=
NG WG <spring@ietf.org<mailto:spring@ietf.org>>
Subject: RE: New Version Notification for draft-dukes-spring-srv6-overhead-=
analysis-00.txt


Darren,



Your draft purports to be an "SRv6 Network Programming Overhead Analysis". =
 As such, it should address overhead analysis and avoid:



=9E        Topics that are orthogonal to overhead analysis

=9E        The appearance of attempting to position one compression strateg=
y over another for reasons other than overhead



So, I recommend that you make the following changes to Section 5:



=9E        The sentence "The mapping proposal, [I-D.bonica-spring-sr-mapped=
-six], does not bring any compression benefit compared to SRv6-native compr=
ession methods [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]" gives the a=
ppearance of author bias. Please replaces it with a neutral sentence like, =
"The two  proposals [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc] [I-D.bo=
nica-spring-sr-mapped-six] provide similar compression.

=9E        You say that " The SRm6 proposal does have several deficiencies =
however, including:".... None of these have anything to do with overhead an=
alysis. They don't belong in this document.

=9E        Also, many of the things that you say in that bullet list are bl=
atantly false. For example, SRm6 does not introduce a new data plane. In is=
 extremely orthodox IPv6.



                                                                           =
                                             Ron









Juniper Business Use Only

From: spring <spring-bounces@ietf.org<mailto:spring-bounces@ietf.org>> On B=
ehalf Of Darren Dukes (ddukes)
Sent: Saturday, June 27, 2020 1:22 AM
To: SPRING WG <spring@ietf.org<mailto:spring@ietf.org>>
Subject: [spring] Fw: New Version Notification for draft-dukes-spring-srv6-=
overhead-analysis-00.txt



[External Email. Be cautious of content]



Hello SPRING working group



There has been lots of work done in SPRING to develop, combine and refine m=
ethods of reducing the overhead of the SRv6 SRH.  We have some good submiss=
ions of requirements, framework analysis but no direct comparisons of diffe=
rent methods.



This draft kicks off that conversation with a simple analysis comparing SRv=
6 native compression available via draft-filsfilscheng-spring-srv6-srh-comp=
-sl-enc vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.





Thanks

  Darren





________________________________

From: internet-drafts@ietf.org<mailto:internet-drafts@ietf.org> <internet-d=
rafts@ietf.org<mailto:internet-drafts@ietf.org>>
Sent: Saturday, June 27, 2020 1:00 AM
To: Darren Dukes (ddukes) <ddukes@cisco.com<mailto:ddukes@cisco.com>>
Subject: New Version Notification for draft-dukes-spring-srv6-overhead-anal=
ysis-00.txt



A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt
has been successfully submitted by Darren Dukes and posted to the
IETF repository.

Name:           draft-dukes-spring-srv6-overhead-analysis
Revision:       00
Title:          SRv6 Network Programming Overhead Analysis
Document date:  2020-06-27
Group:          Individual Submission
Pages:          9
URL:            https://www.ietf.org/internet-drafts/draft-dukes-spring-srv=
6-overhead-analysis-00.txt<https://urldefense.com/v3/__https:/www.ietf.org/=
internet-drafts/draft-dukes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yM=
aO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$>
Status:         https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-ov=
erhead-analysis/<https://urldefense.com/v3/__https:/datatracker.ietf.org/do=
c/draft-dukes-spring-srv6-overhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8=
ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjOMg93gm$>
Htmlized:       https://tools.ietf.org/html/draft-dukes-spring-srv6-overhea=
d-analysis-00<https://urldefense..com/v3/__https:/urldefense...com/v3/__htt=
ps:/tools.ietf..org/html/draft-dukes-spring-srv6-overhead-analysis-00__;!!N=
Et6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjH9AbgoR=
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Htmlized:       https://datatracker.ietf.org/doc/html/draft-dukes-spring-sr=
v6-overhead-analysis<https://urldefense..com/v3/__https:/urldefense...com/v=
3/__https:/datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-a=
nalysis__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_=
xKQSRjOjtZl8r$__;!!NEt6yMaO-gk!QrTNpOov227mx78vk0QW9dUiezD-3jNSo7hrwU5wJzCS=
X8FX6z6L4BIiAXN2pMyI$>


Abstract:
   SRv6 network programming provides the framework for the best
   compression of an IPv6 header within an SR domain.  This document
   provides the analysis to illustrate this fact.


The IETF Secretariat

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<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
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</head>
<body lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Hi Guru,<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">In my humble opinion s=
tatement that something compressed is not a new data plane could be a littl=
e wrong.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Genesis of the solutio=
n (all solutions comes from extension capabilities of IPv6) could only perm=
it to tell that it is &#8220;the same protocol&#8221;, or more precise &#82=
20;extension of the same protocol&#8221;.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">But if new forwarding =
table (with shorter labels) should be created in PFE &#8211; then it is pro=
bably new data plane. It occupies separate resources in data plane.<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Eduard<o:p></o:p></spa=
n></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b>From:</b> spring [mailto:spring-bounces@ietf.org]=
 <b>On Behalf Of
</b>Ron Bonica<br>
<b>Sent:</b> 30 =C9=C0=CE=D1 2020 =C7. 5:59<br>
<b>To:</b> Darren Dukes (ddukes) &lt;ddukes=3D40cisco.com@dmarc.ietf.org&gt=
;; SPRING WG &lt;spring@ietf.org&gt;<br>
<b>Subject:</b> Re: [spring] New Version Notification for draft-dukes-sprin=
g-srv6-overhead-analysis-00.txt<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Darren,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">The 6man WG is responsible for exactly one data plan=
e. That is, IPv6.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">IPv6 is extensible. So, new Routing headers and Opti=
ons can be defined &nbsp;without creating a new data plane. That&#8217;s th=
e whole idea of IPv6 extensibility. Do you believe new data planes were cre=
ated when the following were defined:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"margin-left:36.0pt;text-indent:-18.0pt;mso-=
list:l3 level1 lfo3">
<![if !supportLists]><span style=3D"mso-list:Ignore">-<span style=3D"font:7=
.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;
</span></span><![endif]>The NIMROD Routing header<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"margin-left:36.0pt;text-indent:-18.0pt;mso-=
list:l3 level1 lfo3">
<![if !supportLists]><span style=3D"mso-list:Ignore">-<span style=3D"font:7=
.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;
</span></span><![endif]>They Type 2 Routing header<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"margin-left:36.0pt;text-indent:-18.0pt;mso-=
list:l3 level1 lfo3">
<![if !supportLists]><span style=3D"mso-list:Ignore">-<span style=3D"font:7=
.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;
</span></span><![endif]>The RPL Routing header<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"margin-left:36.0pt;text-indent:-18.0pt;mso-=
list:l3 level1 lfo3">
<![if !supportLists]><span style=3D"mso-list:Ignore">-<span style=3D"font:7=
.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;
</span></span><![endif]>The Segment Routing Header<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Also, the bullets under discussion have little to do=
 with an &#8220;SRv6 Network Programming Overhead Analysis&#8221;.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">If your real goal is holistic comparison of SRm6 and=
 draft-filfilscheng-srv6-srh-comp-sl-eng, I would be glad to work with you =
on that. But a holistic comparison should probably have representation from=
 both sides. Otherwise, it is mere
 marketing.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0cm;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b>From:</b> Darren Dukes (ddukes) &lt;<a href=3D"ma=
ilto:ddukes=3D40cisco.com@dmarc.ietf.org">ddukes=3D40cisco.com@dmarc.ietf.o=
rg</a>&gt;
<br>
<b>Sent:</b> Monday, June 29, 2020 9:33 PM<br>
<b>To:</b> Ron Bonica &lt;<a href=3D"mailto:rbonica@juniper.net">rbonica@ju=
niper.net</a>&gt;; SPRING WG &lt;<a href=3D"mailto:spring@ietf.org">spring@=
ietf.org</a>&gt;<br>
<b>Subject:</b> Re: New Version Notification for draft-dukes-spring-srv6-ov=
erhead-analysis-00.txt<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b><=
span style=3D"font-size:10.5pt;font-family:Lato;color:black">[External Emai=
l. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue">Hi Ron. Th=
anks for reading the document.&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue"><o:p>&nbsp=
;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue">You say ab=
out section 5:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue">&gt; Also,=
 many of the things that you say in that&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue">&gt; bulle=
t list are blatantly false. For example,&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue">&gt; SRm6 =
does not introduce a new data plane.&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue">&gt; In is=
 extremely orthodox IPv6.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue"><o:p>&nbsp=
;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue">SRm6 uses =
IPv6 for transport and it introduces a dataplane that maps 32 or 16 bit ide=
ntifiers to a behavior and IPv6 address. Every SRm6 node must use this new =
dataplane implementation. &nbsp;This is correct.&nbsp;<o:p></o:p></span></p=
>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><span style=3D"font-f=
amily:HelveticaNeue"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue">I believe =
the bullets I listed are relevant when holistically considering the proposa=
ls.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue"><o:p>&nbsp=
;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue">Sincerely,=
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:HelveticaNeue">&nbsp; Dar=
ren<o:p></o:p></span></p>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"divRplyFwdMsg">
<p class=3D"MsoNormal"><b><span style=3D"color:black">From:</span></b><span=
 style=3D"color:black"> Ron Bonica &lt;<a href=3D"mailto:rbonica=3D40junipe=
r.net@dmarc.ietf.org">rbonica=3D40juniper.net@dmarc.ietf.org</a>&gt;<br>
<b>Sent:</b> Saturday, June 27, 2020 7:44:47 PM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com">dd=
ukes@cisco.com</a>&gt;; SPRING WG &lt;<a href=3D"mailto:spring@ietf.org">sp=
ring@ietf.org</a>&gt;<br>
<b>Subject:</b> RE: New Version Notification for draft-dukes-spring-srv6-ov=
erhead-analysis-00.txt</span>
<o:p></o:p></p>
<div>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=3D"xmsonormal">Darren,<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">Your draft purports to be an &#8220;SRv6 Network Pr=
ogramming Overhead Analysis&#8221;. &nbsp;As such, it should address overhe=
ad analysis and avoid:<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsolistparagraph" style=3D"text-indent:-18.0pt;mso-list:l5 lev=
el1 lfo6">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:Symbol"><s=
pan style=3D"mso-list:Ignore">=9E<span style=3D"font:7.0pt &quot;Times New =
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>Topics that are orthogonal to overhead analy=
sis<o:p></o:p></p>
<p class=3D"xmsolistparagraph" style=3D"text-indent:-18.0pt;mso-list:l5 lev=
el1 lfo6">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:Symbol"><s=
pan style=3D"mso-list:Ignore">=9E<span style=3D"font:7.0pt &quot;Times New =
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>The appearance of attempting to position one=
 compression strategy over another for reasons other than overhead<o:p></o:=
p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">So, I recommend that you make the following changes=
 to Section 5:<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsolistparagraph" style=3D"text-indent:-18.0pt;mso-list:l4 lev=
el1 lfo9">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:Symbol"><s=
pan style=3D"mso-list:Ignore">=9E<span style=3D"font:7.0pt &quot;Times New =
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>The sentence &#8220;The mapping proposal, [I=
-D.bonica-spring-sr-mapped-six], does not bring any compression benefit com=
pared to SRv6-native compression methods [I-D.filsfilscheng-spring-srv6-srh=
-comp-sl-enc]&#8221; gives the appearance of
 author bias. Please replaces it with a neutral sentence like, &#8220;The t=
wo &nbsp;proposals [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc] [I-D.bon=
ica-spring-sr-mapped-six] provide similar compression.<o:p></o:p></p>
<p class=3D"xmsolistparagraph" style=3D"text-indent:-18.0pt;mso-list:l4 lev=
el1 lfo9">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:Symbol"><s=
pan style=3D"mso-list:Ignore">=9E<span style=3D"font:7.0pt &quot;Times New =
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>You say that &#8221; The SRm6 proposal does =
have several deficiencies however, including:&#8221;&#8230;. None of these =
have anything to do with overhead analysis. They don&#8217;t belong in this=
 document.<o:p></o:p></p>
<p class=3D"xmsolistparagraph" style=3D"text-indent:-18.0pt;mso-list:l4 lev=
el1 lfo9">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:Symbol"><s=
pan style=3D"mso-list:Ignore">=9E<span style=3D"font:7.0pt &quot;Times New =
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>Also, many of the things that you say in tha=
t bullet list are blatantly false. For example, SRm6 does not introduce a n=
ew data plane. In is extremely orthodox IPv6.
<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ron<o:p></o=
:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsipfooter30b3d538" align=3D"center" style=3D"margin:0cm;margi=
n-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"xmsonormal"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bo=
unces@ietf.org">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Saturday, June 27, 2020 1:22 AM<br>
<b>To:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org">spring@ietf.org=
</a>&gt;<br>
<b>Subject:</b> [spring] Fw: New Version Notification for draft-dukes-sprin=
g-srv6-overhead-analysis-00.txt<o:p></o:p></p>
</div>
</div>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b>=
<span style=3D"font-size:10.5pt;font-family:Lato;color:black">[External Ema=
il. Be cautious of content]</span></b><o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<div>
<div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">Hello =
SPRING working group</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">There =
has been lots of work done in SPRING to develop, combine and refine methods=
 of reducing the overhead of the SRv6 SRH. &nbsp;We have some good submissi=
ons of requirements, framework analysis but
 no direct comparisons of different methods.</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">This d=
raft kicks off that conversation with a simple analysis comparing SRv6 nati=
ve compression available via draft-filsfilscheng-spring-srv6-srh-comp-sl-en=
c&nbsp;vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.</span=
><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">Thanks=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
 Darren</span><o:p></o:p></p>
</div>
<p class=3D"xmsonormal" style=3D"margin-bottom:12.0pt"><span style=3D"font-=
size:12.0pt;color:black">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"x_divRplyFwdMsg">
<p class=3D"xmsonormal"><b><span style=3D"color:black">From:</span></b><spa=
n style=3D"color:black">
<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a> &l=
t;<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a>&=
gt;<br>
<b>Sent:</b> Saturday, June 27, 2020 1:00 AM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com">dd=
ukes@cisco.com</a>&gt;<br>
<b>Subject:</b> New Version Notification for draft-dukes-spring-srv6-overhe=
ad-analysis-00.txt</span>
<o:p></o:p></p>
<div>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=3D"xmsonormal" style=3D"margin-bottom:12.0pt"><br>
A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt<br>
has been successfully submitted by Darren Dukes and posted to the<br>
IETF repository.<br>
<br>
Name:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; draft-duk=
es-spring-srv6-overhead-analysis<br>
Revision:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 00<br>
Title:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; SRv6 Network P=
rogramming Overhead Analysis<br>
Document date:&nbsp; 2020-06-27<br>
Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Individual Sub=
mission<br>
Pages:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9<br>
URL:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a h=
ref=3D"https://urldefense.com/v3/__https:/www.ietf.org/internet-drafts/draf=
t-dukes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8=
ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$">
https://www.ietf.org/internet-drafts/draft-dukes-spring-srv6-overhead-analy=
sis-00.txt</a><br>
Status:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://=
urldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-dukes-spring-srv6=
-overhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYk=
MVwpqxc8PEt_xKQSRjOMg93gm$">
https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-overhead-analysis/=
</a><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://urldefense=
..com/v3/__https:/urldefense...com/v3/__https:/tools.ietf..org/html/draft-d=
ukes-spring-srv6-overhead-analysis-00__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNq=
wrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjH9AbgoR$__;!!NEt6yMaO-gk!QrTNpOov227mx7=
8vk0QW9dUiezD-3jNSo7hrwU5wJzCSX8FX6z6L4BIiAYtsAIIb$">
https://tools.ietf.org/html/draft-dukes-spring-srv6-overhead-analysis-00</a=
><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://urldefense=
..com/v3/__https:/urldefense...com/v3/__https:/datatracker.ietf.org/doc/htm=
l/draft-dukes-spring-srv6-overhead-analysis__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8i=
kwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjOjtZl8r$__;!!NEt6yMaO-gk!QrTNpOov=
227mx78vk0QW9dUiezD-3jNSo7hrwU5wJzCSX8FX6z6L4BIiAXN2pMyI$">
https://datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-anal=
ysis</a><br>
<br>
<br>
Abstract:<br>
&nbsp;&nbsp; SRv6 network programming provides the framework for the best<b=
r>
&nbsp;&nbsp; compression of an IPv6 header within an SR domain.&nbsp; This =
document<br>
&nbsp;&nbsp; provides the analysis to illustrate this fact.<br>
<br>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>
The IETF Secretariat<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>

--_000_f4d1aeb98f344ef382fca20b1bd16391huaweicom_--


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From: Ron Bonica <rbonica@juniper.net>
To: Vasilenko Eduard <vasilenko.eduard@huawei.com>, "Darren Dukes (ddukes)" <ddukes@cisco.com>, SPRING WG <spring@ietf.org>
Thread-Topic: New Version Notification for draft-dukes-spring-srv6-overhead-analysis-00.txt
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Subject: Re: [spring] New Version Notification for draft-dukes-spring-srv6-overhead-analysis-00.txt
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Hello friend,

SRv6 and SRm6 contain the same information in their FIBs. The difference is=
 that the FIBs are structured differently.

Are you assuming that a change in FIB structure constitutes a new forwardin=
g plane. Can you find any text in the IPv6 specifications that support this=
 assumption?

Exploring the other side of the coin, the RFC 4291 definition of an IPv6 ad=
dress is very different from draft-filsfilscheng-spring-srv6-srh-comp-sl-en=
c definition of a C-SID container. Yet both can be placed in the destinatio=
n address field of an IPv6 header. Is this still IPv6, or have we created a=
 new data plane?

                                                                 Ron




Juniper Business Use Only
From: Vasilenko Eduard <vasilenko.eduard@huawei.com>
Sent: Tuesday, June 30, 2020 3:21 AM
To: Ron Bonica <rbonica@juniper.net>; Darren Dukes (ddukes) <ddukes@cisco.c=
om>; SPRING WG <spring@ietf.org>
Subject: RE: New Version Notification for draft-dukes-spring-srv6-overhead-=
analysis-00.txt

[External Email. Be cautious of content]

Hi Guru,
In my humble opinion statement that something compressed is not a new data =
plane could be a little wrong.
Genesis of the solution (all solutions comes from extension capabilities of=
 IPv6) could only permit to tell that it is "the same protocol", or more pr=
ecise "extension of the same protocol".
But if new forwarding table (with shorter labels) should be created in PFE =
- then it is probably new data plane. It occupies separate resources in dat=
a plane.
Eduard
From: spring [mailto:spring-bounces@ietf.org] On Behalf Of Ron Bonica
Sent: 30 =C9=C0=CE=D1 2020 =C7. 5:59
To: Darren Dukes (ddukes) <ddukes=3D40cisco.com@dmarc.ietf.org<mailto:dduke=
s=3D40cisco.com@dmarc.ietf.org>>; SPRING WG <spring@ietf.org<mailto:spring@=
ietf.org>>
Subject: Re: [spring] New Version Notification for draft-dukes-spring-srv6-=
overhead-analysis-00.txt

Darren,

The 6man WG is responsible for exactly one data plane. That is, IPv6.

IPv6 is extensible. So, new Routing headers and Options can be defined  wit=
hout creating a new data plane. That's the whole idea of IPv6 extensibility=
. Do you believe new data planes were created when the following were defin=
ed:


  *   The NIMROD Routing header
  *   They Type 2 Routing header
  *   The RPL Routing header
  *   The Segment Routing Header

Also, the bullets under discussion have little to do with an "SRv6 Network =
Programming Overhead Analysis".

If your real goal is holistic comparison of SRm6 and draft-filfilscheng-srv=
6-srh-comp-sl-eng, I would be glad to work with you on that. But a holistic=
 comparison should probably have representation from both sides. Otherwise,=
 it is mere marketing.

                                                    Ron



Juniper Business Use Only
From: Darren Dukes (ddukes) <ddukes=3D40cisco.com@dmarc.ietf.org<mailto:ddu=
kes=3D40cisco.com@dmarc.ietf.org>>
Sent: Monday, June 29, 2020 9:33 PM
To: Ron Bonica <rbonica@juniper.net<mailto:rbonica@juniper.net>>; SPRING WG=
 <spring@ietf.org<mailto:spring@ietf.org>>
Subject: Re: New Version Notification for draft-dukes-spring-srv6-overhead-=
analysis-00.txt

[External Email. Be cautious of content]

Hi Ron. Thanks for reading the document.

You say about section 5:
> Also, many of the things that you say in that
> bullet list are blatantly false. For example,
> SRm6 does not introduce a new data plane.
> In is extremely orthodox IPv6.

SRm6 uses IPv6 for transport and it introduces a dataplane that maps 32 or =
16 bit identifiers to a behavior and IPv6 address. Every SRm6 node must use=
 this new dataplane implementation.  This is correct.

I believe the bullets I listed are relevant when holistically considering t=
he proposals.

Sincerely,
  Darren


________________________________
From: Ron Bonica <rbonica=3D40juniper.net@dmarc.ietf.org<mailto:rbonica=3D4=
0juniper.net@dmarc.ietf.org>>
Sent: Saturday, June 27, 2020 7:44:47 PM
To: Darren Dukes (ddukes) <ddukes@cisco.com<mailto:ddukes@cisco.com>>; SPRI=
NG WG <spring@ietf.org<mailto:spring@ietf.org>>
Subject: RE: New Version Notification for draft-dukes-spring-srv6-overhead-=
analysis-00.txt


Darren,



Your draft purports to be an "SRv6 Network Programming Overhead Analysis". =
 As such, it should address overhead analysis and avoid:



  *   Topics that are orthogonal to overhead analysis
  *   The appearance of attempting to position one compression strategy ove=
r another for reasons other than overhead



So, I recommend that you make the following changes to Section 5:



  *   The sentence "The mapping proposal, [I-D.bonica-spring-sr-mapped-six]=
, does not bring any compression benefit compared to SRv6-native compressio=
n methods [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]" gives the appear=
ance of author bias. Please replaces it with a neutral sentence like, "The =
two  proposals [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc] [I-D.bonica-=
spring-sr-mapped-six] provide similar compression.
  *   You say that " The SRm6 proposal does have several deficiencies howev=
er, including:".... None of these have anything to do with overhead analysi=
s. They don't belong in this document.
  *   Also, many of the things that you say in that bullet list are blatant=
ly false. For example, SRm6 does not introduce a new data plane. In is extr=
emely orthodox IPv6.



                                                                           =
                                             Ron









Juniper Business Use Only

From: spring <spring-bounces@ietf.org<mailto:spring-bounces@ietf.org>> On B=
ehalf Of Darren Dukes (ddukes)
Sent: Saturday, June 27, 2020 1:22 AM
To: SPRING WG <spring@ietf.org<mailto:spring@ietf.org>>
Subject: [spring] Fw: New Version Notification for draft-dukes-spring-srv6-=
overhead-analysis-00.txt



[External Email. Be cautious of content]



Hello SPRING working group



There has been lots of work done in SPRING to develop, combine and refine m=
ethods of reducing the overhead of the SRv6 SRH.  We have some good submiss=
ions of requirements, framework analysis but no direct comparisons of diffe=
rent methods.



This draft kicks off that conversation with a simple analysis comparing SRv=
6 native compression available via draft-filsfilscheng-spring-srv6-srh-comp=
-sl-enc vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.





Thanks

  Darren





________________________________

From: internet-drafts@ietf.org<mailto:internet-drafts@ietf.org> <internet-d=
rafts@ietf.org<mailto:internet-drafts@ietf.org>>
Sent: Saturday, June 27, 2020 1:00 AM
To: Darren Dukes (ddukes) <ddukes@cisco.com<mailto:ddukes@cisco.com>>
Subject: New Version Notification for draft-dukes-spring-srv6-overhead-anal=
ysis-00.txt



A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt
has been successfully submitted by Darren Dukes and posted to the
IETF repository.

Name:           draft-dukes-spring-srv6-overhead-analysis
Revision:       00
Title:          SRv6 Network Programming Overhead Analysis
Document date:  2020-06-27
Group:          Individual Submission
Pages:          9
URL:            https://www.ietf.org/internet-drafts/draft-dukes-spring-srv=
6-overhead-analysis-00.txt<https://urldefense.com/v3/__https:/www.ietf.org/=
internet-drafts/draft-dukes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yM=
aO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$>
Status:         https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-ov=
erhead-analysis/<https://urldefense.com/v3/__https:/datatracker.ietf.org/do=
c/draft-dukes-spring-srv6-overhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8=
ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjOMg93gm$>
Htmlized:       https://tools.ietf.org/html/draft-dukes-spring-srv6-overhea=
d-analysis-00<https://urldefense.com/v3/__https:/urldefense...com/v3/__http=
s:/urldefense...com/v3/__https:/tools.ietf..org/html/draft-dukes-spring-srv=
6-overhead-analysis-00__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztG=
JYkMVwpqxc8PEt_xKQSRjH9AbgoR$__;!!NEt6yMaO-gk!QrTNpOov227mx78vk0QW9dUiezD-3=
jNSo7hrwU5wJzCSX8FX6z6L4BIiAYtsAIIb$__;!!NEt6yMaO-gk!RxsuHx0YNYzQXzJ2rt5ZSZ=
GFNHR3iYYUrPbwro_OkcXlb76SiuIv7eLzJm4pyMMH$>
Htmlized:       https://datatracker.ietf.org/doc/html/draft-dukes-spring-sr=
v6-overhead-analysis<https://urldefense.com/v3/__https:/urldefense...com/v3=
/__https:/urldefense...com/v3/__https:/datatracker.ietf.org/doc/html/draft-=
dukes-spring-srv6-overhead-analysis__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwr=
ZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjOjtZl8r$__;!!NEt6yMaO-gk!QrTNpOov227mx78v=
k0QW9dUiezD-3jNSo7hrwU5wJzCSX8FX6z6L4BIiAXN2pMyI$__;!!NEt6yMaO-gk!RxsuHx0YN=
YzQXzJ2rt5ZSZGFNHR3iYYUrPbwro_OkcXlb76SiuIv7eLzJvAzSORN$>


Abstract:
   SRv6 network programming provides the framework for the best
   compression of an IPv6 header within an SR domain.  This document
   provides the analysis to illustrate this fact.


The IETF Secretariat

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</head>
<body lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">Hello friend,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">SRv6 and SRm6 contain the same information in their =
FIBs. The difference is that the FIBs are structured differently.<o:p></o:p=
></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Are you assuming that a change in FIB structure cons=
titutes a new forwarding plane. Can you find any text in the IPv6 specifica=
tions that support this assumption?<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Exploring the other side of the coin, the RFC 4291 d=
efinition of an IPv6 address is very different from draft-filsfilscheng-spr=
ing-srv6-srh-comp-sl-enc definition of a C-SID container. Yet both can be p=
laced in the destination address field
 of an IPv6 header. Is this still IPv6, or have we created a new data plane=
?<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ron<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:&quot;Ti=
mes New Roman&quot;,serif"><o:p>&nbsp;</o:p></span></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> Vasilenko Eduard &lt;vasilenko.eduard@h=
uawei.com&gt; <br>
<b>Sent:</b> Tuesday, June 30, 2020 3:21 AM<br>
<b>To:</b> Ron Bonica &lt;rbonica@juniper.net&gt;; Darren Dukes (ddukes) &l=
t;ddukes@cisco.com&gt;; SPRING WG &lt;spring@ietf.org&gt;<br>
<b>Subject:</b> RE: New Version Notification for draft-dukes-spring-srv6-ov=
erhead-analysis-00.txt<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b><=
span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;colo=
r:black">[External Email. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:&quot;Ti=
mes New Roman&quot;,serif"><o:p>&nbsp;</o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Hi Guru,<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">In my humble opinion s=
tatement that something compressed is not a new data plane could be a littl=
e wrong.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Genesis of the solutio=
n (all solutions comes from extension capabilities of IPv6) could only perm=
it to tell that it is &#8220;the same protocol&#8221;, or more precise &#82=
20;extension of the same protocol&#8221;.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">But if new forwarding =
table (with shorter labels) should be created in PFE &#8211; then it is pro=
bably new data plane. It occupies separate resources in data plane.<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Eduard<o:p></o:p></spa=
n></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> spring [<a href=3D"mailto:spring-bounce=
s@ietf.org">mailto:spring-bounces@ietf.org</a>]
<b>On Behalf Of </b>Ron Bonica<br>
<b>Sent:</b> 30 =C9=C0=CE=D1 2020 =C7. 5:59<br>
<b>To:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes=3D40cisco.com=
@dmarc.ietf.org">ddukes=3D40cisco.com@dmarc.ietf.org</a>&gt;; SPRING WG &lt=
;<a href=3D"mailto:spring@ietf.org">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> Re: [spring] New Version Notification for draft-dukes-sprin=
g-srv6-overhead-analysis-00.txt<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Darren,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">The 6man WG is responsible for exactly one data plan=
e. That is, IPv6.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">IPv6 is extensible. So, new Routing headers and Opti=
ons can be defined &nbsp;without creating a new data plane. That&#8217;s th=
e whole idea of IPv6 extensibility. Do you believe new data planes were cre=
ated when the following were defined:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"MsoNormal" style=3D"mso-list:l1 level1 lfo3">The NIMROD Routin=
g header<o:p></o:p></li><li class=3D"MsoNormal" style=3D"mso-list:l1 level1=
 lfo3">They Type 2 Routing header<o:p></o:p></li><li class=3D"MsoNormal" st=
yle=3D"mso-list:l1 level1 lfo3">The RPL Routing header<o:p></o:p></li><li c=
lass=3D"MsoNormal" style=3D"mso-list:l1 level1 lfo3">The Segment Routing He=
ader<o:p></o:p></li></ul>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Also, the bullets under discussion have little to do=
 with an &#8220;SRv6 Network Programming Overhead Analysis&#8221;.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">If your real goal is holistic comparison of SRm6 and=
 draft-filfilscheng-srv6-srh-comp-sl-eng, I would be glad to work with you =
on that. But a holistic comparison should probably have representation from=
 both sides. Otherwise, it is mere
 marketing.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ron<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"msipfooter30b3d538" align=3D"center" style=3D"margin:0in;margin=
-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> Darren Dukes (ddukes) &lt;<a href=3D"ma=
ilto:ddukes=3D40cisco.com@dmarc.ietf.org">ddukes=3D40cisco.com@dmarc.ietf.o=
rg</a>&gt;
<br>
<b>Sent:</b> Monday, June 29, 2020 9:33 PM<br>
<b>To:</b> Ron Bonica &lt;<a href=3D"mailto:rbonica@juniper.net">rbonica@ju=
niper.net</a>&gt;; SPRING WG &lt;<a href=3D"mailto:spring@ietf.org">spring@=
ietf.org</a>&gt;<br>
<b>Subject:</b> Re: New Version Notification for draft-dukes-spring-srv6-ov=
erhead-analysis-00.txt<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b><=
span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;colo=
r:black">[External Email. Be cautious of content]<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">Hi Ron. Thanks for reading the document.&nbsp;<o:p></o:p></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">You say about section 5:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">&gt; Also, many of the things that you say in that&nbsp;<o:p></o:p>=
</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">&gt; bullet list are blatantly false. For example,&nbsp;<o:p></o:p>=
</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">&gt; SRm6 does not introduce a new data plane.&nbsp;<o:p></o:p></sp=
an></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">&gt; In is extremely orthodox IPv6.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">SRm6 uses IPv6 for transport and it introduces a dataplane that map=
s 32 or 16 bit identifiers to a behavior and IPv6 address. Every SRm6 node =
must use this new dataplane implementation. &nbsp;This
 is correct.&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><span style=3D"font-f=
amily:&quot;HelveticaNeue&quot;,serif"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">I believe the bullets I listed are relevant when holistically consi=
dering the proposals.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">Sincerely,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;HelveticaNeue&quot;=
,serif">&nbsp; Darren<o:p></o:p></span></p>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"divRplyFwdMsg">
<p class=3D"MsoNormal"><b><span style=3D"color:black">From:</span></b><span=
 style=3D"color:black"> Ron Bonica &lt;<a href=3D"mailto:rbonica=3D40junipe=
r.net@dmarc.ietf.org">rbonica=3D40juniper.net@dmarc.ietf.org</a>&gt;<br>
<b>Sent:</b> Saturday, June 27, 2020 7:44:47 PM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com">dd=
ukes@cisco.com</a>&gt;; SPRING WG &lt;<a href=3D"mailto:spring@ietf.org">sp=
ring@ietf.org</a>&gt;<br>
<b>Subject:</b> RE: New Version Notification for draft-dukes-spring-srv6-ov=
erhead-analysis-00.txt</span>
<o:p></o:p></p>
<div>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=3D"xmsonormal">Darren,<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">Your draft purports to be an &#8220;SRv6 Network Pr=
ogramming Overhead Analysis&#8221;. &nbsp;As such, it should address overhe=
ad analysis and avoid:<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"xmsolistparagraph" style=3D"margin-left:0in;mso-list:l5 level1=
 lfo6">Topics that are orthogonal to overhead analysis<o:p></o:p></li><li c=
lass=3D"xmsolistparagraph" style=3D"margin-left:0in;mso-list:l5 level1 lfo6=
">The appearance of attempting to position one compression strategy over an=
other for reasons other than overhead<o:p></o:p></li></ul>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">So, I recommend that you make the following changes=
 to Section 5:<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"xmsolistparagraph" style=3D"margin-left:0in;mso-list:l2 level1=
 lfo9">The sentence &#8220;The mapping proposal, [I-D.bonica-spring-sr-mapp=
ed-six], does not bring any compression benefit compared to SRv6-native com=
pression methods [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc]&#8221;
 gives the appearance of author bias. Please replaces it with a neutral sen=
tence like, &#8220;The two &nbsp;proposals [I-D.filsfilscheng-spring-srv6-s=
rh-comp-sl-enc] [I-D.bonica-spring-sr-mapped-six] provide similar compressi=
on.<o:p></o:p></li><li class=3D"xmsolistparagraph" style=3D"margin-left:0in=
;mso-list:l2 level1 lfo9">You say that &#8221; The SRm6 proposal does have =
several deficiencies however, including:&#8221;&#8230;. None of these have =
anything to do with overhead analysis. They don&#8217;t belong in this docu=
ment.<o:p></o:p></li><li class=3D"xmsolistparagraph" style=3D"margin-left:0=
in;mso-list:l2 level1 lfo9">Also, many of the things that you say in that b=
ullet list are blatantly false. For example, SRm6 does not introduce a new =
data plane. In is extremely orthodox IPv6.
<o:p></o:p></li></ul>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ron<o:p></o=
:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsipfooter30b3d538" align=3D"center" style=3D"margin:0in;margi=
n-bottom:.0001pt;text-align:center">
<span style=3D"font-size:7.0pt;color:black">Juniper Business Use Only</span=
><o:p></o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"xmsonormal"><b>From:</b> spring &lt;<a href=3D"mailto:spring-bo=
unces@ietf.org">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Darren Dukes (ddukes)<br>
<b>Sent:</b> Saturday, June 27, 2020 1:22 AM<br>
<b>To:</b> SPRING WG &lt;<a href=3D"mailto:spring@ietf.org">spring@ietf.org=
</a>&gt;<br>
<b>Subject:</b> [spring] Fw: New Version Notification for draft-dukes-sprin=
g-srv6-overhead-analysis-00.txt<o:p></o:p></p>
</div>
</div>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<p class=3D"xmsonormal" style=3D"line-height:12.0pt;background:#FFEB9C"><b>=
<span style=3D"font-size:10.5pt;font-family:&quot;Lato&quot;,sans-serif;col=
or:black">[External Email. Be cautious of content]</span></b><o:p></o:p></p=
>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
<div>
<div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">Hello =
SPRING working group</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">There =
has been lots of work done in SPRING to develop, combine and refine methods=
 of reducing the overhead of the SRv6 SRH. &nbsp;We have some good submissi=
ons of requirements, framework analysis but
 no direct comparisons of different methods.</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">This d=
raft kicks off that conversation with a simple analysis comparing SRv6 nati=
ve compression available via draft-filsfilscheng-spring-srv6-srh-comp-sl-en=
c&nbsp;vs the mapped SRm6 proposal draft-bonica-spring-sr-mapped-six.</span=
><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">Thanks=
</span><o:p></o:p></p>
</div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
 Darren</span><o:p></o:p></p>
</div>
<p class=3D"xmsonormal" style=3D"margin-bottom:12.0pt"><span style=3D"font-=
size:12.0pt;color:black">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<div>
<p class=3D"xmsonormal"><span style=3D"font-size:12.0pt;color:black">&nbsp;=
</span><o:p></o:p></p>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"x_divRplyFwdMsg">
<p class=3D"xmsonormal"><b><span style=3D"color:black">From:</span></b><spa=
n style=3D"color:black">
<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a> &l=
t;<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a>&=
gt;<br>
<b>Sent:</b> Saturday, June 27, 2020 1:00 AM<br>
<b>To:</b> Darren Dukes (ddukes) &lt;<a href=3D"mailto:ddukes@cisco.com">dd=
ukes@cisco.com</a>&gt;<br>
<b>Subject:</b> New Version Notification for draft-dukes-spring-srv6-overhe=
ad-analysis-00.txt</span>
<o:p></o:p></p>
<div>
<p class=3D"xmsonormal">&nbsp;<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=3D"xmsonormal" style=3D"margin-bottom:12.0pt"><br>
A new version of I-D, draft-dukes-spring-srv6-overhead-analysis-00.txt<br>
has been successfully submitted by Darren Dukes and posted to the<br>
IETF repository.<br>
<br>
Name:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; draft-duk=
es-spring-srv6-overhead-analysis<br>
Revision:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 00<br>
Title:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; SRv6 Network P=
rogramming Overhead Analysis<br>
Document date:&nbsp; 2020-06-27<br>
Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Individual Sub=
mission<br>
Pages:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9<br>
URL:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a h=
ref=3D"https://urldefense.com/v3/__https:/www.ietf.org/internet-drafts/draf=
t-dukes-spring-srv6-overhead-analysis-00.txt__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8=
ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjEj0Z_T4$">
https://www.ietf.org/internet-drafts/draft-dukes-spring-srv6-overhead-analy=
sis-00.txt</a><br>
Status:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://=
urldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-dukes-spring-srv6=
-overhead-analysis/__;!!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYk=
MVwpqxc8PEt_xKQSRjOMg93gm$">
https://datatracker.ietf.org/doc/draft-dukes-spring-srv6-overhead-analysis/=
</a><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://urldefense=
.com/v3/__https:/urldefense...com/v3/__https:/urldefense...com/v3/__https:/=
tools.ietf..org/html/draft-dukes-spring-srv6-overhead-analysis-00__;!!NEt6y=
MaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjH9AbgoR$__;=
!!NEt6yMaO-gk!QrTNpOov227mx78vk0QW9dUiezD-3jNSo7hrwU5wJzCSX8FX6z6L4BIiAYtsA=
IIb$__;!!NEt6yMaO-gk!RxsuHx0YNYzQXzJ2rt5ZSZGFNHR3iYYUrPbwro_OkcXlb76SiuIv7e=
LzJm4pyMMH$">
https://tools.ietf.org/html/draft-dukes-spring-srv6-overhead-analysis-00</a=
><br>
Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href=3D"https://urldefense=
.com/v3/__https:/urldefense...com/v3/__https:/urldefense...com/v3/__https:/=
datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-analysis__;!=
!NEt6yMaO-gk!XQ30Nxg22KtJi8ikwlkNqwrZPkBjF4IixztGJYkMVwpqxc8PEt_xKQSRjOjtZl=
8r$__;!!NEt6yMaO-gk!QrTNpOov227mx78vk0QW9dUiezD-3jNSo7hrwU5wJzCSX8FX6z6L4BI=
iAXN2pMyI$__;!!NEt6yMaO-gk!RxsuHx0YNYzQXzJ2rt5ZSZGFNHR3iYYUrPbwro_OkcXlb76S=
iuIv7eLzJvAzSORN$">
https://datatracker.ietf.org/doc/html/draft-dukes-spring-srv6-overhead-anal=
ysis</a><br>
<br>
<br>
Abstract:<br>
&nbsp;&nbsp; SRv6 network programming provides the framework for the best<b=
r>
&nbsp;&nbsp; compression of an IPv6 header within an SR domain.&nbsp; This =
document<br>
&nbsp;&nbsp; provides the analysis to illustrate this fact.<br>
<br>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>
The IETF Secretariat<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>

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To: "spring@ietf.org" <spring@ietf.org>, "bruno.decraene@orange.com" <bruno.decraene@orange.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/GV2MFxa950Ps-GDnjEfcttrqSYg>
Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replication-segment
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Hi Authors,

    I have a few of questions.

    Should a replication-segment be generalized to be a special SID (say a =
multicast SID allocated from a multicast SID block)?

    Should a replication-segment be associated with just a set of downstrea=
m SIDs without the  node-IDs? Where the downstream SIDs may be replication-=
segments or normal SIDs in some cases (for example when the downstream node=
s are egresses).

    Should a state in a node for a replication-segment be removed? If a sta=
te is stored in a node (each node) for a (each) replication segment of a (e=
ach) SR P2MP path, there may be some scalability issue. This seems not cons=
istent with the principles of the segment routing, in which no state is sto=
red in the core of the network.

Best Regards,
Huaimo
-----Original Message-----
From: spring <spring-bounces@ietf.org> On Behalf Of Stone, Andrew (Nokia - =
CA/Ottawa)
Sent: Monday, June 22, 2020 2:44 PM
To: bruno.decraene@orange.com; spring@ietf.org
Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replicatio=
n-segment

Hi Spring WG

Support adoption.

Willing to work on the document, and already participating in related docum=
ents in PCE and IDR.

Thanks
Andrew


On 2020-06-22, 10:46 AM, "spring on behalf of bruno.decraene@orange.com" <s=
pring-bounces@ietf.org on behalf of bruno.decraene@orange.com> wrote:

    Hi SPRING WG,

    Authors of draft-voyer-spring-sr-replication-segment [1] have asked for=
 WG adoption.

    Please indicate your support, comments, or objection, for adopting this=
 draft as a working group item by July 6th 2020.

    Could those who are willing to work on this document, please notify the=
 list. That gives us an indication of the energy level in the working group=
 to work on this.

    As a reminder, the call for IPR has been done last November. [2]

    Thanks,
    Regards,
    Bruno, Jim, Joel

    [1] https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2=
Ftools.ietf.org%2Fhtml%2Fdraft-voyer-spring-sr-replication-segment&amp;data=
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%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637284628562490951&amp;sdata=
=3D0yc%2BfZ4uA72ldbCIevjFKvFQA%2BSp2Wh7%2BOdCZsM4yaI%3D&amp;reserved=3D0
    [2] https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2=
Fmailarchive.ietf.org%2Farch%2Fmsg%2Fspring%2FtW-HHK7QzCw3ZBbFD0Dl7Eszd3k%2=
F&amp;data=3D02%7C01%7Chuaimo.chen%40futurewei.com%7Ce48fdc087ead47f7a46e08=
d816fe4085%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637284628562490951&=
amp;sdata=3D2e1JSoFWYpZfLe9ODWtGjI%2B82O0Y4cFCeKDGo8%2Fe%2FIs%3D&amp;reserv=
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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
1">
<style type=3D"text/css" style=3D"display:none;"> P {margin-top:0;margin-bo=
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<body dir=3D"ltr">
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
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Hi Authors,</div>
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
&nbsp; &nbsp; I have a few of questions.</div>
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
&nbsp; &nbsp; Should a replication-segment be generalized to be a special S=
ID (say a multicast SID allocated from a multicast SID block)?&nbsp;</div>
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
&nbsp; &nbsp; Should&nbsp;<span style=3D"font-family: Calibri, Arial, Helve=
tica, sans-serif; background-color: rgb(255, 255, 255); display: inline !im=
portant">a replication-segment be associated with just a set of downstream =
SIDs without the&nbsp; node-IDs? Where the downstream
 SIDs may be&nbsp;<span style=3D"font-family: Calibri, Arial, Helvetica, sa=
ns-serif; background-color: rgb(255, 255, 255); display: inline !important"=
>replication-segments or normal SIDs in some cases (for example when the do=
wnstream nodes are egresses).</span></span></div>
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
<span style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; backgrou=
nd-color: rgb(255, 255, 255); display: inline !important"><span style=3D"fo=
nt-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255=
, 255, 255); display: inline !important"><br>
</span></span></div>
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
<span style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; backgrou=
nd-color: rgb(255, 255, 255); display: inline !important"><span style=3D"fo=
nt-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255=
, 255, 255); display: inline !important">&nbsp;
 &nbsp; Should a state in a node for a replication-segment be removed? If a=
 state is stored in a node (each node) for a (each) replication segment of =
a (each) SR P2MP path, there may be some scalability issue. This seems not =
consistent with the principles of the
 segment routing, in which no state is stored in the core of the network.</=
span></span></div>
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
Best Regards,</div>
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
Huaimo</div>
<div>
<div class=3D"BodyFragment"><font size=3D"2"><span style=3D"font-size:11pt"=
>
<div class=3D"PlainText">-----Original Message-----<br>
From: spring &lt;spring-bounces@ietf.org&gt; On Behalf Of Stone, Andrew (No=
kia - CA/Ottawa)<br>
Sent: Monday, June 22, 2020 2:44 PM<br>
To: bruno.decraene@orange.com; spring@ietf.org<br>
Subject: Re: [spring] WG adoption call for draft-voyer-spring-sr-replicatio=
n-segment<br>
<br>
Hi Spring WG<br>
<br>
Support adoption. <br>
<br>
Willing to work on the document, and already participating in related docum=
ents in PCE and IDR.&nbsp;
<br>
<br>
Thanks<br>
Andrew<br>
<br>
<br>
On 2020-06-22, 10:46 AM, &quot;spring on behalf of bruno.decraene@orange.co=
m&quot; &lt;spring-bounces@ietf.org on behalf of bruno.decraene@orange.com&=
gt; wrote:<br>
<br>
&nbsp;&nbsp;&nbsp; Hi SPRING WG,<br>
<br>
&nbsp;&nbsp;&nbsp; Authors of draft-voyer-spring-sr-replication-segment [1]=
 have asked for WG adoption.<br>
<br>
&nbsp;&nbsp;&nbsp; Please indicate your support, comments, or objection, fo=
r adopting this draft as a working group item by July 6th 2020.<br>
<br>
&nbsp;&nbsp;&nbsp; Could those who are willing to work on this document, pl=
ease notify the list. That gives us an indication of the energy level in th=
e working group to work on this.<br>
<br>
&nbsp;&nbsp;&nbsp; As a reminder, the call for IPR has been done last Novem=
ber. [2]<br>
<br>
&nbsp;&nbsp;&nbsp; Thanks,<br>
&nbsp;&nbsp;&nbsp; Regards,<br>
&nbsp;&nbsp;&nbsp; Bruno, Jim, Joel<br>
<br>
&nbsp;&nbsp;&nbsp; [1] <a href=3D"https://nam11.safelinks.protection.outloo=
k.com/?url=3Dhttps%3A%2F%2Ftools.ietf.org%2Fhtml%2Fdraft-voyer-spring-sr-re=
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Subject: [spring] Small SID/Compressed SID Design Team
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Dear SPRING WG:

The WG chairs have been working with the relevant ADs to determine what nee=
ds to be done to move the SPRING segment routing work related to IPv6 along=
 effectively. We are going to establish a design team as soon as possible, =
with a specific objective to look at the compression-related work.

The design team charge is still being worked on, but roughly it will be tas=
ked to agree on a requirements proposal to the WG and a comparison document=
 to be evaluated by the WG.  To be clear, as is the normal case for the IET=
F, the design team outputs are input to the WG.  Their output will not beco=
me a WG document until the WG agrees to adopt it.  Also, these documents ar=
e for WG use.  It will be for future analysis as to whether it is useful to=
 the larger community to publish them as RFCs.

While we have various thoughts as to membership in the design team, we woul=
d like proposals for people we should include. We expect that there are mor=
e people that we "should" include than can make up an effective design time=
 for the rapid delivery that we need.  If you are willing to serve on the d=
esign team, please let the chairs know. If there is someone you think would=
 be good on the design team, please ask them to let us know.  We are NOT so=
liciting evaluations of proposed people on the list.  So, it is best if vol=
unteers come to us directly. To be explicit, the chairs will select the mem=
bers of and the chair for this design team.

We hope to appoint a small, effective, team that represents the varied inte=
rests and concerns that have been expressed on the list.  Folks volunteerin=
g should understand that we hope you can move quickly, so it will take a si=
gnificant amount of your time. The deadline for volunteering is 6pm US PST =
this coming Friday.

Thanks!

Jim, Joel & Bruno




--_000_MN2PR13MB3070676D33C87042D73AF708D26F0MN2PR13MB3070namp_
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<p class=3D"MsoNormal">Dear SPRING WG:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">The WG chairs have been working with the relevant AD=
s to determine what needs to be done to move the SPRING segment routing wor=
k related to IPv6 along effectively. We are going to establish a design tea=
m as soon as possible, with a specific
 objective to look at the compression-related work.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">The design team charge is still being worked on, but=
 roughly it will be tasked to agree on a requirements proposal to the WG an=
d a comparison document to be evaluated by the WG.&nbsp; To be clear, as is=
 the normal case for the IETF, the design
 team outputs are input to the WG.&nbsp; Their output will not become a WG =
document until the WG agrees to adopt it.&nbsp; Also, these documents are f=
or WG use.&nbsp; It will be for future analysis as to whether it is useful =
to the larger community to publish them as RFCs.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">While we have various thoughts as to membership in t=
he design team, we would like proposals for people we should include. We ex=
pect that there are more people that we &quot;should&quot; include than can=
 make up an effective design time for the rapid
 delivery that we need.&nbsp; If you are willing to serve on the design tea=
m, please let the chairs know. If there is someone you think would be good =
on the design team, please ask them to let us know.&nbsp; We are NOT solici=
ting evaluations of proposed people on the
 list.&nbsp; So, it is best if volunteers come to us directly. To be explic=
it, the chairs will select the members of and the chair for this design tea=
m.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">We hope to appoint a small, effective, team that rep=
resents the varied interests and concerns that have been expressed on the l=
ist.&nbsp; Folks volunteering should understand that we hope you can move q=
uickly, so it will take a significant amount
 of your time. The deadline for volunteering is 6pm US PST this coming Frid=
ay.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Thanks!<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Jim, Joel &amp; Bruno<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</body>
</html>

--_000_MN2PR13MB3070676D33C87042D73AF708D26F0MN2PR13MB3070namp_--


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From: Haoyu Song <haoyu.song@futurewei.com>
To: "Zafar Ali (zali)" <zali=40cisco.com@dmarc.ietf.org>, 6man <6man@ietf.org>, "ipv6@ietf.org" <ipv6@ietf.org>
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