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From: Loa Andersson <loa@pi.nu>
To: "mpls@ietf.org" <mpls@ietf.org>
Cc: "spring@ietf.org" <spring@ietf.org>, "draft-ietf-mpls-spring-entropy-label@ietf.org" <draft-ietf-mpls-spring-entropy-label@ietf.org>, "mpls-ads@ietf.org" <mpls-ads@ietf.org>
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Date: Wed, 2 May 2018 09:44:38 +0200
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Subject: [spring] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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Working Group,

February 1st the MPLS working Group requested that draft-ietf-mpls-
spring-entropy-label should be published as an Informational RFC.

During the RTG Directorate and AD reviews the question whether the
document should instead be published as a RFC on the Standards Track
has been raised.

The decision to make the document Informational was taken "a long time
ago", based on discussions between the authors and involving the
document shepherd, on the wg mailing list. At that point it we were
convinced that the document should be progressed as an Informational
document.

It turns out that there has been such changes to the document that we
now would like to request input from the working group if we should make
the document a Standards Track RFC.

Daniele's RTG Directorate review can be found at at:
https://datatracker.ietf.org/doc/review-ietf-mpls-spring-entropy-label-08-rtgdir-lc-ceccarelli-2018-02-21/

All the issues, with the exception whether it should be Informational
or Standards track, has been resolved as part AD review.

If the document is progressed as a Standard Tracks document then we
also need to answer the question whether this is an update RFC 6790.

This mail starts a one week poll (ending May 9) to see if we have
support to make the document a Standards Track document. If you support
placing it on the Standards Track also consider if it is an update to
RFC 6790.

Please send your comments to the MPLS wg mailing list ( mpls@ietf.org ).

/Loa
for the mpls wf co-chairs

PS

I'm copying the spring working group on this mail.
-- 


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


From nobody Wed May  2 04:22:29 2018
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To: "Andrew G. Malis" <agmalis@gmail.com>
Cc: "Zafar Ali (zali)" <zali@cisco.com>, "mpls@ietf.org" <mpls@ietf.org>, SPRING WG List <spring@ietf.org>, mpls <mpls-bounces@ietf.org>, "sfc@ietf.org" <sfc@ietf.org>
References: <2ac6b61d-3a38-1aaf-62ae-d923f1ad7468@pi.nu> <CA+b+ERnJNad6Awo+-2dU2kz6rwx-HQEniXcWgjoWUd-zm3r2qQ@mail.gmail.com> <F64C10EAA68C8044B33656FA214632C88828EFEB@MISOUT7MSGUSRDE.ITServices.sbc.com> <CA+b+ER==g53MZK5RSNmaFkg1UBC8zEiNsfxNLKCNXDumannaHg@mail.gmail.com> <F64C10EAA68C8044B33656FA214632C88828F06D@MISOUT7MSGUSRDE.ITServices.sbc.com> <052998BB-B820-412C-8363-B3EB7551B299@nokia.com> <1522554645079.8864@bell.ca> <CA+b+ERmzFPZRyrCnBvnRVhK5F25RMc8+Wt-n6NXKrONWy9G+_g@mail.gmail.com> <1522812352107.5966@bell.ca> <489a9667-f159-4607-5834-b4bacf64989c@gmail.com> <09337fcf-64c9-450c-8dbc-ba8330611fe4.xiaohu.xxh@alibaba-inc.com> <6EE25554-3714-4A75-896F-24CC89BAA807@gmail.com> <5dab5411-0b08-4bd4-86ec-752e1803c3ff.xiaohu.xxh@alibaba-inc.com> <6bea41f6-5519-f512-92e5-a72bbd6187da@gmail.com> <BD0B4559-A1B8-4724-B55D-B11D6DE94278@cisco.com> <CAA=duU0BWK9tik2FXvj_wqMbfMwp5XmU6ADNXE52bpetMXdczw@mail.gmail.com>
From: Loa Andersson <loa@pi.nu>
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Date: Wed, 2 May 2018 13:22:15 +0200
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Subject: Re: [spring] [mpls] [sfc] Working Group adoption of draft-farrel-mpls-sfc
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Andy,

The chairs of the SPRING and MPLS wg has discussed the proposal to
adopt draft-xuclad-spring-sr-service-chaining in the MPLS wg.
Our agreement is that draft-xuclad-spring-sr-service-chaining
belongs in the SPRING wg.

/Loa
for the SPRING and MPLS wg co-chairs

On 2018-04-15 16:55, Andrew G. Malis wrote:
> Zafar, et al,
> 
> Perhaps the fairest to all concerned is for the MPLS WG to adopt both 
> drafts, and then it will be up to the WG (rather than the authors) to 
> best determine the technical details going forward, and how best to 
> document them. That way the work becomes the consensus product of the WG.
> 
> Cheers,
> Andy
> 
> 
> On Sun, Apr 15, 2018 at 12:44 AM, Zafar Ali (zali) <zali@cisco..com 
> <mailto:zali@cisco.com>> wrote:
> 
>     Dear Stewart, WG Chairs and the WG, ____
> 
>     __ __
> 
>     I do not agree with Stewart’s points and will response in a separate
>     email. But all that is just noise and that cannot resolve the issue
>     at hand. ____
> 
>     __ __
> 
>     A countless time, Xiaohu has raised the issue that the intellectual
>     property for the contents in section 6 of draft-farrel-mpls-sfc
>     belongs to draft-xu-mpls-service-chaining. Please see one of
>     Xiaohu's recent emails with the subject *"[spring] For the fairness
>     and justice of the IETF culture"* dated Thursday, April 5, 2018 at
>     12:34 AM, copied in the following. ____
> 
>     __ __
> 
>     This issue was also raised by many during the WG adoption poll of
>     the document. The chairs adopted the work with the promise of fixing
>     the issue. Specifically, in the email to announce the adoption of
>     the ID to the WG, the chair(s) mentioned the following:____
> 
>     __ __
> 
>     "That decision is taken, the issues that has been pointed out are____
> 
>     noted. These issues need to be resolved on the mailing list and____
> 
>     rough consensus need to be reached for text changes in the document.____
> 
>     Actually the members of the working group have much more influence
>     on____
> 
>     a working group document, than on an individual draft.____
> 
>     It would be far better if we now focused on proposing text changes,____
> 
>     rather than discussing processes."____
> 
>     __ __
> 
>     This is a serious issue; we need to remove section 6 from draft-
>     farrel-mpls-sfc to move forward. These contents will proceed in
>     draft-xu*, where the contents started initially. Everyone will have
>     a fair chance to contribute to the contents as part of
>     collaborations on draft-xu*. __ __
> 
>     __ __
> 
>     Thanks____
> 
>     __ __
> 
>     Regards … Zafar ____
> 
>     __ __
> 
>     *From: *spring <spring-bounces@ietf.org
>     <mailto:spring-bounces@ietf.org>> on behalf of "徐小虎(义先)"
>     <xiaohu..xxh@alibaba-inc.com <mailto:xiaohu.xxh@alibaba-inc.com>>
>     *Date: *Thursday, April 5, 2018 at 12:34 AM
>     *To: *"mpls@ietf.org <mailto:mpls@ietf.org>" <mpls@ietf.org
>     <mailto:mpls@ietf.org>>, SPRING WG List <spring@ietf.org
>     <mailto:spring@ietf.org>>
>     *Cc: *"ietf@ietf.org <mailto:ietf@ietf.org>" <ietf@ietf.org
>     <mailto:ietf@ietf.org>>
>     *Subject: *[spring] For the fairness and justice of the IETF
>     culture//Re: [mpls] What to do with draft-ietf-mpls-sfc-00.txt____
> 
>     __ __
> 
>     Hi all,____
> 
>     __ __
> 
>     As I had pointed out before, this draft describes two MPLS-based SFC____
> 
>     approaches: one is how to encode the NSH info, more specifically,
>     the SPI____
> 
>     and SI info by two MPLS labels, which is still a stateful SFC
>     mechanism____
> 
>     just like NSH; another is how to leverage the MPLS-SR to realize a____
> 
>     stateless SFC (see section 6).____
> 
>     __ __
> 
>     It has been pointed out by many people that section 6 of the draft
>     copies____
> 
>     the____
> 
>     idea of (https://tools.ietf.org/html/draft-xu-mpls-service-chaining
>     <https://tools.ietf.org/html/draft-xu-mpls-service-chaining>)____
> 
>     without any technology contribution except replacing “MPLS Segment____
> 
>     Routing” by “Label Stack”. Funnily, one author of
>     draft-ietf-mpls-sfc____
> 
>     had inadvertently admitted____
> 
>     "using a different name for the same thing is not so clever" (see____
> 
>     https://mailarchive.ietf.org/arch/msg/mpls/y7FTc38ysVf6PyJlA04MEFSN9nc
>     <https://mailarchive.ietf.org/arch/msg/mpls/y7FTc38ysVf6PyJlA04MEFSN9nc>)
>     in____
> 
>     another thread. ____
> 
>     __ __
> 
>     IMHO, the indulgence towards such behavior of copying____
> 
>     ideas of existing drafts with word tricks would seriously trample____
> 
>     underfoot the fairness and justice of the IETF culture. At least, it
>     would____
> 
>     badly damage the interest and enthusiasm of IETF participants,
>     especially____
> 
>     newcomers and non-native speakers of English.____
> 
>     __ __
> 
>     Best regards,____
> 
>     Xiaohu____
> 
>     __ __
> 
>     __ __
> 
>     __ __
> 
>     __ __
> 
>     *From: *mpls <mpls-bounces@ietf.org <mailto:mpls-bounces@ietf.org>>
>     on behalf of Stewart Bryant <stewart.bryant@gmail.com
>     <mailto:stewart.bryant@gmail.com>>
>     *Date: *Friday, April 13, 2018 at 3:10 AM
>     *To: *"徐小虎(义先)" <xiaohu..xxh@alibaba-inc.com
>     <mailto:xiaohu.xxh@alibaba-inc.com>>
>     *Cc: *"mpls@ietf.org <mailto:mpls@ietf.org>" <mpls@ietf.org
>     <mailto:mpls@ietf.org>>, mpls <mpls-bounces@ietf.org
>     <mailto:mpls-bounces@ietf.org>>, Robert Raszuk <robert@raszuk.net
>     <mailto:robert@raszuk.net>>, "sfc@ietf.org <mailto:sfc@ietf.org>"
>     <sfc@ietf.org <mailto:sfc@ietf.org>>
>     *Subject: *Re: [mpls] [sfc] Working Group adoption of
>     draft-farrel-mpls-sfc____
> 
>     __ __
> 
>     __ __
> 
>     __ __
> 
>     On 13/04/2018 08:23, 徐小虎(义先) wrote:____
> 
>         Hi Stewart,____
> 
>         __ __
> 
>         Thanks for your response. For the SR-based SFC mechanism that
>         has been described in draft-xuclad*, it's not helpful to
>         describe it again in another draft. The most simple and
>         efficient way to address the overlapping issue is to reference
>         draft-xuclad* rather than "using a different name
>         for the same thing". I'm looking forward to seeing the revision
>         of draft-farrel* that would address the overlapping issue
>         concretely.____
> 
> 
>     Please read what I said.
> 
>     There are subtle but important technical differences between the two
>     approaches.
> 
>     - Stewart
> 
> 
>     ____
> 
> 
> 
>         ____
> 
>         If co-authors of draft-farrel* believed the current text as
>         described in draft-xuclad* is not good enough or misses
>         something important, any comments and suggestions are more than
>         welcome.____
> 
> 
>     I will send you some text to include in draft-xuclad that points to
>     the important differences in the approach taken in draft-farrel.
>     This will clarify the issue to the reader.
> 
>     I hope that this is an acceptable resolution of this issue.
> 
>     - Stewart
> 
> 
> 
>     ____
> 
> 
> 
>         ____
> 
>         Best regards,____
> 
>         Xiaohu____
> 
>             ------------------------------------------------------------------____
> 
>             Stewart Bryant
>             <stewart.bryant@gmail.com><mailto:stewart.bryant@gmail.com>____
> 
>             2018年4月13日(星期五) 13:27____
> 
>             徐小虎(义先)
>             <xiaohu.xxh@alibaba-inc.com><mailto:xiaohu.xxh@alibaba-inc.com>____
> 
>             mpls <mpls-bounces@ietf.org><mailto:mpls-bounces@ietf.org>;
>             "Bernier, Daniel"
>             <daniel.bernier@bell.ca><mailto:daniel.bernier@bell.ca>;
>             Robert Raszuk <robert@raszuk.net><mailto:robert@raszuk.net>;
>             mpls@ietf.org<mailto:mpls@ietf.org><mpls@ietf.org><mailto:mpls@ietf.org>;
>             sfc@ietf.org<mailto:sfc@ietf.org><sfc@ietf.org><mailto:sfc@ietf.org>____
> 
>             Re: [mpls] [sfc] Working Group adoption of
>             draft-farrel-mpls-sfc____
> 
>             __ __
> 
>             Hi Xiaohu ____
> 
>             __ __
> 
>             What an earlier version of the draft said is of no
>             importance. What it says going forward is what counts.____
> 
>             __ __
> 
>             Perhaps the way to address your concern is to include some
>             text of the form that I used in my email of yesterday to
>             describe to the reader the difference in approach. This is
>             consistent with earlier advice in this discussion to
>             reference the work from which this forked.____
> 
>             __ __
> 
>             - Stewart____
> 
>             __ __
> 
>             __ __
> 
>             Sent from my iPad____
> 
> 
>             On 13 Apr 2018, at 03:35, 徐小虎(义先)
>             <xiaohu.xxh@alibaba-inc.com<mailto:xiaohu.xxh@alibaba-inc.com>>
>             wrote:____
> 
>             Hi Stewart,____
> 
>             __ __
> 
>             If draft-farrel* was just describing an MPLS-based SFC
>             technology that is different from the MPLS-SR-based SFC
>             technology that has been described in draft-xuclad*, that
>             would be fine. However, draft-farrel* also described the
>             technology that has been described in draft-xuclad* (see
>             section 6) by "using a different name for the same thing".
>             Note that the title of section 6 in those pervious versions
>             of draft-farrel* is ____
> 
>             "MPLS Segment Routing". One co-author of draft-farrel* said
>             they worked very hard to change the "Segment Routing" term
>             to "label stack" term in the new version of draft-farrel* in
>             order to deal with the overlapping issue. However, such
>             change is just "using a different name for the same thing",
>             and it doesn't solve the overlapping issue at all, as had
>             been pointed out by many people. As said by one co-author of
>             draft-farrel*, in a thread which is irrelavant to this
>             overlapping issue, "using a different
>             name for the same thing is not so clever:)". In fact, it
>             would cause unneccessary confusions to implementors by
>             describing the same technology within different drafts. More
>             badly, it would set a bad precedant in the IETF of copying
>             the idea of the existing draft by
>             "using a different name for the same thing".____
> 
> 
> 
>             ____
> 
>             Best regards,____
> 
>             Xiaohu____
> 
>             ------------------------------------------------------------------____
> 
>             Stewart Bryant
>             <stewart.bryant@gmail.com<mailto:stewart.bryant@gmail.com>>____
> 
>             2018年4月12日(星期四) 23:04____
> 
>             "Bernier, Daniel"
>             <daniel.bernier@bell.ca<mailto:daniel.bernier@bell.ca>>;
>             Robert Raszuk <robert@raszuk.net<mailto:robert@raszuk.net>>____
> 
>             mpls@ietf.org<mailto:mpls@ietf.org><mpls@ietf.org<mailto:mpls@ietf.org>>;
>             sfc@ietf.org<mailto:sfc@ietf.org><sfc@ietf.org<mailto:sfc@ietf.org>>____
> 
>             Re: [mpls] [sfc] Working Group adoption of
>             draft-farrel-mpls-sfc____
> 
>             __ __
> 
> 
>             Rather than have a process discussion, I think we should
>             go up a level
>             and better understand the technical differences between
>             the two drafts.
> 
>             draft-farrel-mpls-sfc describes the actions at a
>             hop in terms of a tuple
>             that mirrors the SFC approach that allows a short indication of
>             potentially re-entrant chains. In its simplest form it uses
>             a compact
>             MPLS stack to describe an arbitarily complex path that
>             is compatile with
>             simple edge routers which are often challenged in terms of
>             the number of
>             labels that they can push.
> 
>             draft-xu-clad-spring-sr-service-chaining unrolls the
>             path and explicitly
>             calls out each hop and each
>             function into the label stack. This results
>             in a much larger MPLS label stack that will challenge
>             some edge routers.
>             The way that we generally deal with imposition limits
>             is through the use
>             of binding-SIDs, which in the limiting case resolves to the
>             approach in
>             draft-farrel with the limitation that the position
>             on the path is
>             implicit in the label stack size rather than explicitly
>             specified by the SI.
> 
>             Mid-flight path changes (if such things are needed) is
>             clearly simpler
>             with draft-farrel.
> 
>             The short stack in draft-farrel comes at the cost of
>             greater network
>             forwarding stack, and the long stack is the price that
>             draft-xu-clad
>             pays for the reduction in forwarding state.
> 
>             The optimal design point between forwarding and
>             control plane state is
>             something that is dependent on many parameters, and is
>             dependent on many
>             network and operational
>             factors, so much so, that don't think it is wise
>             to rule either out of scope at this stage.
> 
>             The hybrid mode in section 6 of draft-farrel supports the
>             mixed mode in
>             section 7 of the draft. This allows the construction of
>             SFCs that are
>             the concatination of two or more compacted sub-chains.
>             This allows the
>             operator to deploy a solution
>             with the advantages of draft-farrel
>             together with some of the flexibility of draft-xu-clad.
> 
>             At this stage the two drafts are sufficienly different
>             that I think we
>             need to proceed with both at least to the point where we fully
>             understand the detailed consequences of the two
>             approachs and the
>             scenarios where each finds it's niche.
> 
>             After developing a better understanding the detail of
>             each design, their
>             control plane, and operational contexts and how
>             each maps to customer
>             network requirements, we can move the drafts to the
>             appropriate IETF
>             track. Such tracks may be anything from abandonment to
>             IETF standard for
>             one or both of these approaches.
> 
>             Meanwhile I think that we need to focus our efforts on a deeper
>             understanding of the technology and how each might
>             make the Internet
>             work better,  rather than spending effort on arguing
>             about IETF process.
> 
>             - Stewart
> 
>             _______________________________________________
>             mpls mailing list
>             mpls@ietf.org<mailto:mpls@ietf.org>
>             https://www.ietf.org/mailman/listinfo/mpls<https://www.ietf.org/mailman/listinfo/mpls>____
> 
>             __ __
> 
>             _______________________________________________
>             mpls mailing list
>             mpls@ietf.org<mailto:mpls@ietf.org>
>             https://www.ietf.org/mailman/listinfo/mpls<https://www.ietf.org/mailman/listinfo/mpls>____
> 
>         __ __
> 
> 
> 
>     ____
> 
> 
>     _______________________________________________
>     mpls mailing list
>     mpls@ietf.org <mailto:mpls@ietf.org>
>     https://www.ietf.org/mailman/listinfo/mpls
>     <https://www.ietf.org/mailman/listinfo/mpls>
> 
> 
> 
> 
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
> 

-- 


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


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From: "Andrew G. Malis" <agmalis@gmail.com>
Date: Wed, 2 May 2018 08:10:24 -0400
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To: Loa Andersson <loa@pi.nu>
Cc: "Zafar Ali (zali)" <zali@cisco.com>, "mpls@ietf.org" <mpls@ietf.org>, SPRING WG List <spring@ietf.org>,  mpls <mpls-bounces@ietf.org>, "sfc@ietf.org" <sfc@ietf.org>
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Subject: Re: [spring] [mpls] [sfc] Working Group adoption of draft-farrel-mpls-sfc
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Loa,

Thanks for the update, much appreciated.

Cheers,
Andy

On Wed, May 2, 2018 at 7:22 AM, Loa Andersson <loa@pi.nu> wrote:

> Andy,
>
> The chairs of the SPRING and MPLS wg has discussed the proposal to
> adopt draft-xuclad-spring-sr-service-chaining in the MPLS wg.
> Our agreement is that draft-xuclad-spring-sr-service-chaining
> belongs in the SPRING wg.
>
> /Loa
> for the SPRING and MPLS wg co-chairs
>
> On 2018-04-15 16:55, Andrew G. Malis wrote:
>
>> Zafar, et al,
>>
>> Perhaps the fairest to all concerned is for the MPLS WG to adopt both
>> drafts, and then it will be up to the WG (rather than the authors) to best
>> determine the technical details going forward, and how best to document
>> them. That way the work becomes the consensus product of the WG.
>>
>> Cheers,
>> Andy
>>
>>

--000000000000f58a48056b37f9a3
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<div dir=3D"ltr">Loa,<div><br></div><div>Thanks for the update, much apprec=
iated.</div><div><br></div><div>Cheers,</div><div>Andy</div><div class=3D"g=
mail_extra"><br><div class=3D"gmail_quote">On Wed, May 2, 2018 at 7:22 AM, =
Loa Andersson <span dir=3D"ltr">&lt;<a href=3D"mailto:loa@pi.nu" target=3D"=
_blank">loa@pi.nu</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote=
" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">A=
ndy,<br>
<br>
The chairs of the SPRING and MPLS wg has discussed the proposal to<br>
adopt draft-xuclad-spring-sr-service<wbr>-chaining in the MPLS wg.<br>
Our agreement is that draft-xuclad-spring-sr-service<wbr>-chaining<br>
belongs in the SPRING wg.<br>
<br>
/Loa<br>
for the SPRING and MPLS wg co-chairs<span class=3D""><br>
<br>
On 2018-04-15 16:55, Andrew G. Malis wrote:<br>
</span><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-=
left:1px #ccc solid;padding-left:1ex"><span class=3D"">
Zafar, et al,<br>
<br>
Perhaps the fairest to all concerned is for the MPLS WG to adopt both draft=
s, and then it will be up to the WG (rather than the authors) to best deter=
mine the technical details going forward, and how best to document them. Th=
at way the work becomes the consensus product of the WG.<br>
<br>
Cheers,<br>
Andy<br>
<br></span></blockquote></blockquote></div></div></div>

--000000000000f58a48056b37f9a3--


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From: "Andrew G. Malis" <agmalis@gmail.com>
Date: Wed, 2 May 2018 09:01:15 -0400
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To: Loa Andersson <loa@pi.nu>
Cc: "mpls@ietf.org" <mpls@ietf.org>, "spring@ietf.org" <spring@ietf.org>,  "mpls-ads@ietf.org" <mpls-ads@ietf.org>,  "draft-ietf-mpls-spring-entropy-label@ietf.org" <draft-ietf-mpls-spring-entropy-label@ietf.org>
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Subject: Re: [spring] [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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Loa,

There=E2=80=99s plenty of RFC 2119 language in the draft, so I support maki=
ng this
standards track.

Cheers,
Andy


On Wed, May 2, 2018 at 3:44 AM, Loa Andersson <loa@pi.nu> wrote:

> Working Group,
>
> February 1st the MPLS working Group requested that draft-ietf-mpls-
> spring-entropy-label should be published as an Informational RFC.
>
> During the RTG Directorate and AD reviews the question whether the
> document should instead be published as a RFC on the Standards Track
> has been raised.
>
> The decision to make the document Informational was taken "a long time
> ago", based on discussions between the authors and involving the
> document shepherd, on the wg mailing list. At that point it we were
> convinced that the document should be progressed as an Informational
> document.
>
> It turns out that there has been such changes to the document that we
> now would like to request input from the working group if we should make
> the document a Standards Track RFC.
>
> Daniele's RTG Directorate review can be found at at:
> https://datatracker.ietf.org/doc/review-ietf-mpls-spring-ent
> ropy-label-08-rtgdir-lc-ceccarelli-2018-02-21/
>
> All the issues, with the exception whether it should be Informational
> or Standards track, has been resolved as part AD review.
>
> If the document is progressed as a Standard Tracks document then we
> also need to answer the question whether this is an update RFC 6790.
>
> This mail starts a one week poll (ending May 9) to see if we have
> support to make the document a Standards Track document. If you support
> placing it on the Standards Track also consider if it is an update to
> RFC 6790.
>
> Please send your comments to the MPLS wg mailing list ( mpls@ietf.org ).
>
> /Loa
> for the mpls wf co-chairs
>
> PS
>
> I'm copying the spring working group on this mail.
> --
>
>
> Loa Andersson                        email: loa@pi.nu
> Senior MPLS Expert
> Bronze Dragon Consulting             phone: +46 739 81 21 64
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>

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<div dir=3D"ltr">Loa,<div><br></div><div>There=E2=80=99s plenty of RFC 2119=
 language in the draft, so I support making this standards track.</div><div=
><br></div><div>Cheers,</div><div>Andy</div><div><br></div></div><div class=
=3D"gmail_extra"><br><div class=3D"gmail_quote">On Wed, May 2, 2018 at 3:44=
 AM, Loa Andersson <span dir=3D"ltr">&lt;<a href=3D"mailto:loa@pi.nu" targe=
t=3D"_blank">loa@pi.nu</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_=
quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1=
ex">Working Group,<br>
<br>
February 1st the MPLS working Group requested that draft-ietf-mpls-<br>
spring-entropy-label should be published as an Informational RFC.<br>
<br>
During the RTG Directorate and AD reviews the question whether the<br>
document should instead be published as a RFC on the Standards Track<br>
has been raised.<br>
<br>
The decision to make the document Informational was taken &quot;a long time=
<br>
ago&quot;, based on discussions between the authors and involving the<br>
document shepherd, on the wg mailing list. At that point it we were<br>
convinced that the document should be progressed as an Informational<br>
document.<br>
<br>
It turns out that there has been such changes to the document that we<br>
now would like to request input from the working group if we should make<br=
>
the document a Standards Track RFC.<br>
<br>
Daniele&#39;s RTG Directorate review can be found at at:<br>
<a href=3D"https://datatracker.ietf.org/doc/review-ietf-mpls-spring-entropy=
-label-08-rtgdir-lc-ceccarelli-2018-02-21/" rel=3D"noreferrer" target=3D"_b=
lank">https://datatracker.ietf.org/d<wbr>oc/review-ietf-mpls-spring-ent<wbr=
>ropy-label-08-rtgdir-lc-ceccar<wbr>elli-2018-02-21/</a><br>
<br>
All the issues, with the exception whether it should be Informational<br>
or Standards track, has been resolved as part AD review.<br>
<br>
If the document is progressed as a Standard Tracks document then we<br>
also need to answer the question whether this is an update RFC 6790.<br>
<br>
This mail starts a one week poll (ending May 9) to see if we have<br>
support to make the document a Standards Track document. If you support<br>
placing it on the Standards Track also consider if it is an update to<br>
RFC 6790.<br>
<br>
Please send your comments to the MPLS wg mailing list ( <a href=3D"mailto:m=
pls@ietf.org" target=3D"_blank">mpls@ietf.org</a> ).<br>
<br>
/Loa<br>
for the mpls wf co-chairs<br>
<br>
PS<br>
<br>
I&#39;m copying the spring working group on this mail.<span class=3D"HOEnZb=
"><font color=3D"#888888"><br>
-- <br>
<br>
<br>
Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 email: <a href=3D"mailto:loa@pi.nu" target=3D"_blank"=
>loa@pi.nu</a><br>
Senior MPLS Expert<br>
Bronze Dragon Consulting=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0pho=
ne: +46 739 81 21 64<br>
<br>
______________________________<wbr>_________________<br>
mpls mailing list<br>
<a href=3D"mailto:mpls@ietf.org" target=3D"_blank">mpls@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/mpls" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/mpls</a><br>
</font></span></blockquote></div><br></div>

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From: Alexander Vainshtein <Alexander.Vainshtein@ecitele.com>
To: Loa Andersson <loa@pi.nu>
CC: "mpls@ietf.org" <mpls@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "mpls-ads@ietf.org" <mpls-ads@ietf.org>, "draft-ietf-mpls-spring-entropy-label@ietf.org" <draft-ietf-mpls-spring-entropy-label@ietf.org>, "Andrew G. Malis" <agmalis@gmail.com>
Thread-Topic: [spring] [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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Subject: Re: [spring] [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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To: "Andrew G. Malis" <agmalis@gmail.com>, Loa Andersson <loa@pi.nu>
Cc: "mpls@ietf.org" <mpls@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "mpls-ads@ietf.org" <mpls-ads@ietf.org>, "draft-ietf-mpls-spring-entropy-label@ietf.org" <draft-ietf-mpls-spring-entropy-label@ietf.org>
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From: Stewart Bryant <stewart.bryant@gmail.com>
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Subject: Re: [spring] [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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Be careful.

There is text in the draft that talks about ECMP behaviour in different 
parts of the path, which implies an expectation that the EL is the sole 
source of entropy. If we make this ST then we will be implicitly 
standardizing that behaviour. Now as it happens, I thing we need to 
update the EL behaviour to make it the sole source of entropy, because 
that solves a number of problems, particularly in network 
instrumentation, but we need to do that explicitly and not as an 
artefact of this draft.

So the way I see it, either this draft is published as informational, or 
it is published as ST without any text that implies that the EL is the 
sole source of entropy, or we harden the EL behaviour (which I think we 
need to do) and this draft is published with a normative reference to an 
RFC that specifies the stricter EL behaviour.

- Stewart


On 02/05/2018 14:01, Andrew G. Malis wrote:
> Loa,
>
> There’s plenty of RFC 2119 language in the draft, so I support making 
> this standards track.
>
> Cheers,
> Andy
>
>
> On Wed, May 2, 2018 at 3:44 AM, Loa Andersson <loa@pi.nu 
> <mailto:loa@pi.nu>> wrote:
>
>     Working Group,
>
>     February 1st the MPLS working Group requested that draft-ietf-mpls-
>     spring-entropy-label should be published as an Informational RFC.
>
>     During the RTG Directorate and AD reviews the question whether the
>     document should instead be published as a RFC on the Standards Track
>     has been raised.
>
>     The decision to make the document Informational was taken "a long time
>     ago", based on discussions between the authors and involving the
>     document shepherd, on the wg mailing list. At that point it we were
>     convinced that the document should be progressed as an Informational
>     document.
>
>     It turns out that there has been such changes to the document that we
>     now would like to request input from the working group if we
>     should make
>     the document a Standards Track RFC.
>
>     Daniele's RTG Directorate review can be found at at:
>     https://datatracker.ietf.org/doc/review-ietf-mpls-spring-entropy-label-08-rtgdir-lc-ceccarelli-2018-02-21/
>     <https://datatracker.ietf.org/doc/review-ietf-mpls-spring-entropy-label-08-rtgdir-lc-ceccarelli-2018-02-21/>
>
>     All the issues, with the exception whether it should be Informational
>     or Standards track, has been resolved as part AD review.
>
>     If the document is progressed as a Standard Tracks document then we
>     also need to answer the question whether this is an update RFC 6790.
>
>     This mail starts a one week poll (ending May 9) to see if we have
>     support to make the document a Standards Track document. If you
>     support
>     placing it on the Standards Track also consider if it is an update to
>     RFC 6790.
>
>     Please send your comments to the MPLS wg mailing list (
>     mpls@ietf.org <mailto:mpls@ietf.org> ).
>
>     /Loa
>     for the mpls wf co-chairs
>
>     PS
>
>     I'm copying the spring working group on this mail.
>     -- 
>
>
>     Loa Andersson                        email: loa@pi.nu
>     <mailto:loa@pi.nu>
>     Senior MPLS Expert
>     Bronze Dragon Consulting             phone: +46 739 81 21 64
>
>     _______________________________________________
>     mpls mailing list
>     mpls@ietf.org <mailto:mpls@ietf.org>
>     https://www.ietf.org/mailman/listinfo/mpls
>     <https://www.ietf.org/mailman/listinfo/mpls>
>
>
>
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring


--------------7B0C195818E0C6D7EF509066
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<html>
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    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <p>Be careful.</p>
    <p>There is text in the draft that talks about ECMP behaviour in
      different parts of the path, which implies an expectation that the
      EL is the sole source of entropy. If we make this ST then we will
      be implicitly standardizing that behaviour. Now as it happens, I
      thing we need to update the EL behaviour to make it the sole
      source of entropy, because that solves a number of problems,
      particularly in network instrumentation, but we need to do that
      explicitly and not as an artefact of this draft.</p>
    <p>So the way I see it, either this draft is published as
      informational, or it is published as ST without any text that
      implies that the EL is the sole source of entropy, or we harden
      the EL behaviour (which I think we need to do) and this draft is
      published with a normative reference to an RFC that specifies the
      stricter EL behaviour.<br>
    </p>
    <p>- Stewart<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 02/05/2018 14:01, Andrew G. Malis
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAA=duU3Xc3BvYT1cmVN97vsEYQMsmm6kGqZaibuGOr6QrX42_w@mail.gmail.com">
      <div dir="ltr">Loa,
        <div><br>
        </div>
        <div>There’s plenty of RFC 2119 language in the draft, so I
          support making this standards track.</div>
        <div><br>
        </div>
        <div>Cheers,</div>
        <div>Andy</div>
        <div><br>
        </div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Wed, May 2, 2018 at 3:44 AM, Loa
          Andersson <span dir="ltr">&lt;<a href="mailto:loa@pi.nu"
              target="_blank" moz-do-not-send="true">loa@pi.nu</a>&gt;</span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">Working
            Group,<br>
            <br>
            February 1st the MPLS working Group requested that
            draft-ietf-mpls-<br>
            spring-entropy-label should be published as an Informational
            RFC.<br>
            <br>
            During the RTG Directorate and AD reviews the question
            whether the<br>
            document should instead be published as a RFC on the
            Standards Track<br>
            has been raised.<br>
            <br>
            The decision to make the document Informational was taken "a
            long time<br>
            ago", based on discussions between the authors and involving
            the<br>
            document shepherd, on the wg mailing list. At that point it
            we were<br>
            convinced that the document should be progressed as an
            Informational<br>
            document.<br>
            <br>
            It turns out that there has been such changes to the
            document that we<br>
            now would like to request input from the working group if we
            should make<br>
            the document a Standards Track RFC.<br>
            <br>
            Daniele's RTG Directorate review can be found at at:<br>
            <a
href="https://datatracker.ietf.org/doc/review-ietf-mpls-spring-entropy-label-08-rtgdir-lc-ceccarelli-2018-02-21/"
              rel="noreferrer" target="_blank" moz-do-not-send="true">https://datatracker.ietf.org/d<wbr>oc/review-ietf-mpls-spring-ent<wbr>ropy-label-08-rtgdir-lc-ceccar<wbr>elli-2018-02-21/</a><br>
            <br>
            All the issues, with the exception whether it should be
            Informational<br>
            or Standards track, has been resolved as part AD review.<br>
            <br>
            If the document is progressed as a Standard Tracks document
            then we<br>
            also need to answer the question whether this is an update
            RFC 6790.<br>
            <br>
            This mail starts a one week poll (ending May 9) to see if we
            have<br>
            support to make the document a Standards Track document. If
            you support<br>
            placing it on the Standards Track also consider if it is an
            update to<br>
            RFC 6790.<br>
            <br>
            Please send your comments to the MPLS wg mailing list ( <a
              href="mailto:mpls@ietf.org" target="_blank"
              moz-do-not-send="true">mpls@ietf.org</a> ).<br>
            <br>
            /Loa<br>
            for the mpls wf co-chairs<br>
            <br>
            PS<br>
            <br>
            I'm copying the spring working group on this mail.<span
              class="HOEnZb"><font color="#888888"><br>
                -- <br>
                <br>
                <br>
                Loa Andersson                        email: <a
                  href="mailto:loa@pi.nu" target="_blank"
                  moz-do-not-send="true">loa@pi.nu</a><br>
                Senior MPLS Expert<br>
                Bronze Dragon Consulting             phone: +46 739 81
                21 64<br>
                <br>
                ______________________________<wbr>_________________<br>
                mpls mailing list<br>
                <a href="mailto:mpls@ietf.org" target="_blank"
                  moz-do-not-send="true">mpls@ietf.org</a><br>
                <a href="https://www.ietf.org/mailman/listinfo/mpls"
                  rel="noreferrer" target="_blank"
                  moz-do-not-send="true">https://www.ietf.org/mailman/l<wbr>istinfo/mpls</a><br>
              </font></span></blockquote>
        </div>
        <br>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
spring mailing list
<a class="moz-txt-link-abbreviated" href="mailto:spring@ietf.org">spring@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/spring">https://www.ietf.org/mailman/listinfo/spring</a>
</pre>
    </blockquote>
    <br>
  </body>
</html>

--------------7B0C195818E0C6D7EF509066--


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From: Eric Gray <eric.gray@ericsson.com>
To: Stewart Bryant <stewart.bryant@gmail.com>, "Andrew G. Malis" <agmalis@gmail.com>, Loa Andersson <loa@pi.nu>
CC: "mpls@ietf.org" <mpls@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "mpls-ads@ietf.org" <mpls-ads@ietf.org>, "draft-ietf-mpls-spring-entropy-label@ietf.org" <draft-ietf-mpls-spring-entropy-label@ietf.org>
Thread-Topic: [mpls] [spring] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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Subject: Re: [spring] [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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From: Eric Gray <eric.gray@ericsson.com>
To: Eric Gray <eric.gray@ericsson.com>, Stewart Bryant <stewart.bryant@gmail.com>, "Andrew G. Malis" <agmalis@gmail.com>, "Loa Andersson" <loa@pi.nu>
CC: "mpls@ietf.org" <mpls@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "mpls-ads@ietf.org" <mpls-ads@ietf.org>, "draft-ietf-mpls-spring-entropy-label@ietf.org" <draft-ietf-mpls-spring-entropy-label@ietf.org>
Thread-Topic: [mpls] [spring] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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Date: Wed, 2 May 2018 14:52:46 +0000
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Subject: Re: [spring] [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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From nobody Wed May  2 07:58:58 2018
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To: Eric Gray <eric.gray@ericsson.com>, Stewart Bryant <stewart.bryant@gmail.com>, "Andrew G. Malis" <agmalis@gmail.com>
Cc: "mpls@ietf.org" <mpls@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "mpls-ads@ietf.org" <mpls-ads@ietf.org>, "draft-ietf-mpls-spring-entropy-label@ietf.org" <draft-ietf-mpls-spring-entropy-label@ietf.org>
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Subject: Re: [spring] [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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Eric, Stewart, wg,

Wouldn't just a few words in the draft saying something along the lines

"This document should not be interpreted in such a way that the ECMP
  behavior is limited to rely on EL only."

Go a long way to clarify Stewart's concerns?

/Loa

On 2018-05-02 16:52, Eric Gray wrote:
> Stewart, et al,
> 
>                  Loa just pointed out that I made a typo in the original 
> mail below.  In the second paragraph, I meant to say:
> 
>                  “Explicitly limiting ECMP behavior to …”
> 
> --
> 
> Eric
> 
> *From:*mpls [mailto:mpls-bounces@ietf.org] *On Behalf Of *Eric Gray
> *Sent:* Wednesday, May 02, 2018 10:28 AM
> *To:* Stewart Bryant <stewart.bryant@gmail.com>; Andrew G. Malis 
> <agmalis@gmail.com>; Loa Andersson <loa@pi.nu>
> *Cc:* mpls@ietf.org; spring@ietf.org; mpls-ads@ietf.org; 
> draft-ietf-mpls-spring-entropy-label@ietf.org
> *Subject:* Re: [mpls] [spring] should 
> draft-ietf-mpls-spring-entropy-label be published as a RFC on the 
> standards track?
> 
> Stewart,
> 
>                  At least one view of the purpose of an Entropy label is 
> that it _/adds/_ entropy to the process of path selection.
> 
>                  Explicitly limiting EL behavior to rely exclusively on 
> use of the entropy label would also explicitly _/limit/_ the total 
> entropy to whatever the implementation that provided the entropy label 
> was implemented to treat as _/sufficient/_ among all paths in the ECMP 
> gestalt, possibly including branches that implementation might not know 
> about.
> 
>                  I doubt very much that many of the problems you refer 
> to would have arisen if folks generally felt that the entropy label – by 
> itself – provides sufficient entropy.
> 
>                  It might make sense to impose this restriction – 
> optionally – when a deployment occurs in which any particular 
> pathological behavior might be expected to occur.
> 
>                  In that case, it might be very important to ensure that 
> the limited approaches available for maximizing efficient load 
> distribution via explicit and exclusive use of the entropy label are 
> acceptable to a reasonably diverse set of implementers, as support for 
> at least one of those approaches would then become a mandatory part of 
> every standard implementation.
> 
>                  Even so, I don’t believe it is a good idea to restrict 
> implementations from using other approaches in every case.
> 
>                  The simplest example possible (where doing so is a big 
> problem) is one where the entropy labels provided have N possible 
> values  and there are M possible paths, where M>N. In any scenario where 
> this occurs, M-N paths simply will not be used.
> 
> --
> 
> Eric
> 
> *From:*mpls [mailto:mpls-bounces@ietf.org] *On Behalf Of *Stewart Bryant
> *Sent:* Wednesday, May 02, 2018 9:52 AM
> *To:* Andrew G. Malis <agmalis@gmail.com <mailto:agmalis@gmail.com>>; 
> Loa Andersson <loa@pi.nu <mailto:loa@pi.nu>>
> *Cc:* mpls@ietf.org <mailto:mpls@ietf.org>; spring@ietf.org 
> <mailto:spring@ietf.org>; mpls-ads@ietf.org <mailto:mpls-ads@ietf.org>; 
> draft-ietf-mpls-spring-entropy-label@ietf.org 
> <mailto:draft-ietf-mpls-spring-entropy-label@ietf.org>
> *Subject:* Re: [mpls] [spring] should 
> draft-ietf-mpls-spring-entropy-label be published as a RFC on the 
> standards track?
> 
> Be careful.
> 
> There is text in the draft that talks about ECMP behaviour in different 
> parts of the path, which implies an expectation that the EL is the sole 
> source of entropy. If we make this ST then we will be implicitly 
> standardizing that behaviour. Now as it happens, I thing we need to 
> update the EL behaviour to make it the sole source of entropy, because 
> that solves a number of problems, particularly in network 
> instrumentation, but we need to do that explicitly and not as an 
> artefact of this draft.
> 
> So the way I see it, either this draft is published as informational, or 
> it is published as ST without any text that implies that the EL is the 
> sole source of entropy, or we harden the EL behaviour (which I think we 
> need to do) and this draft is published with a normative reference to an 
> RFC that specifies the stricter EL behaviour.
> 
> - Stewart
> 
> On 02/05/2018 14:01, Andrew G. Malis wrote:
> 
>     Loa,
> 
>     There’s plenty of RFC 2119 language in the draft, so I support
>     making this standards track.
> 
>     Cheers,
> 
>     Andy
> 
>     On Wed, May 2, 2018 at 3:44 AM, Loa Andersson <loa@pi.nu
>     <mailto:loa@pi.nu>> wrote:
> 
>         Working Group,
> 
>         February 1st the MPLS working Group requested that draft-ietf-mpls-
>         spring-entropy-label should be published as an Informational RFC.
> 
>         During the RTG Directorate and AD reviews the question whether the
>         document should instead be published as a RFC on the Standards Track
>         has been raised.
> 
>         The decision to make the document Informational was taken "a
>         long time
>         ago", based on discussions between the authors and involving the
>         document shepherd, on the wg mailing list. At that point it we were
>         convinced that the document should be progressed as an Informational
>         document.
> 
>         It turns out that there has been such changes to the document
>         that we
>         now would like to request input from the working group if we
>         should make
>         the document a Standards Track RFC.
> 
>         Daniele's RTG Directorate review can be found at at:
>         https://datatracker.ietf.org/doc/review-ietf-mpls-spring-entropy-label-08-rtgdir-lc-ceccarelli-2018-02-21/
> 
>         All the issues, with the exception whether it should be
>         Informational
>         or Standards track, has been resolved as part AD review.
> 
>         If the document is progressed as a Standard Tracks document then we
>         also need to answer the question whether this is an update RFC 6790.
> 
>         This mail starts a one week poll (ending May 9) to see if we have
>         support to make the document a Standards Track document. If you
>         support
>         placing it on the Standards Track also consider if it is an
>         update to
>         RFC 6790.
> 
>         Please send your comments to the MPLS wg mailing list (
>         mpls@ietf.org <mailto:mpls@ietf.org> ).
> 
>         /Loa
>         for the mpls wf co-chairs
> 
>         PS
> 
>         I'm copying the spring working group on this mail.
>         -- 
> 
> 
>         Loa Andersson                        email: loa@pi.nu
>         <mailto:loa@pi.nu>
>         Senior MPLS Expert
>         Bronze Dragon Consulting             phone: +46 739 81 21 64
> 
>         _______________________________________________
>         mpls mailing list
>         mpls@ietf.org <mailto:mpls@ietf.org>
>         https://www.ietf.org/mailman/listinfo/mpls
> 
> 
> 
>     _______________________________________________
> 
>     spring mailing list
> 
>     spring@ietf.org <mailto:spring@ietf.org>
> 
>     https://www.ietf.org/mailman/listinfo/spring
> 

-- 


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


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To: Eric Gray <eric.gray@ericsson.com>, Stewart Bryant <stewart.bryant@gmail.com>, "Andrew G. Malis" <agmalis@gmail.com>, Loa Andersson <loa@pi.nu>
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Subject: Re: [spring] [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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From: Rob Shakir <robjs@google.com>
Date: Wed, 02 May 2018 15:15:31 +0000
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To: John E Drake <jdrake@juniper.net>
Cc: Eric Gray <eric.gray@ericsson.com>, Stewart Bryant <stewart.bryant@gmail.com>,  "Andrew G. Malis" <agmalis@gmail.com>, Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>,  "spring@ietf.org" <spring@ietf.org>, "mpls-ads@ietf.org" <mpls-ads@ietf.org>,  "draft-ietf-mpls-spring-entropy-label@ietf.org" <draft-ietf-mpls-spring-entropy-label@ietf.org>
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Subject: Re: [spring] [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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I agree with adding such a statement here if this document should be
standards track. It's not clear to me that such an implication is intended
by the draft.

r.

On Wed, May 2, 2018 at 8:04 AM John E Drake <jdrake@juniper.net> wrote:

> Stewart,
>
>
>
> Realistically, I think your proposal is an example of closing the barn
> door after the horse has bolted.
>
>
>
> Yours Irrespectively,
>
>
>
> John
>
>
>
> *From:* spring <spring-bounces@ietf.org> *On Behalf Of *Eric Gray
> *Sent:* Wednesday, May 2, 2018 10:28 AM
> *To:* Stewart Bryant <stewart.bryant@gmail.com>; Andrew G. Malis <
> agmalis@gmail.com>; Loa Andersson <loa@pi.nu>
>
>
> *Cc:* mpls@ietf.org; spring@ietf.org; mpls-ads@ietf.org;
> draft-ietf-mpls-spring-entropy-label@ietf.org
>
> *Subject:* Re: [spring] [mpls] should
> draft-ietf-mpls-spring-entropy-label be published as a RFC on the standar=
ds
> track?
>
>
>
> Stewart,
>
>
>
>                 At least one view of the purpose of an Entropy label is
> that it _*adds*_ entropy to the process of path selection.
>
>
>
>                 Explicitly limiting EL behavior to rely exclusively on us=
e
> of the entropy label would also explicitly _*limit*_ the total entropy to
> whatever the implementation that provided the entropy label was implement=
ed
> to treat as _*sufficient*_ among all paths in the ECMP gestalt, possibly
> including branches that implementation might not know about.
>
>
>
>                 I doubt very much that many of the problems you refer to
> would have arisen if folks generally felt that the entropy label =E2=80=
=93 by
> itself =E2=80=93 provides sufficient entropy.
>
>
>
>                 It might make sense to impose this restriction =E2=80=93
> optionally =E2=80=93 when a deployment occurs in which any particular pat=
hological
> behavior might be expected to occur.
>
>
>
>                 In that case, it might be very important to ensure that
> the limited approaches available for maximizing efficient load distributi=
on
> via explicit and exclusive use of the entropy label are acceptable to a
> reasonably diverse set of implementers, as support for at least one of
> those approaches would then become a mandatory part of every standard
> implementation.
>
>
>
>                 Even so, I don=E2=80=99t believe it is a good idea to res=
trict
> implementations from using other approaches in every case.
>
>
>
>                 The simplest example possible (where doing so is a big
> problem) is one where the entropy labels provided have N possible values
> and there are M possible paths, where M>N. In any scenario where this
> occurs, M-N paths simply will not be used.
>
>
>
> --
>
> Eric
>
>
>
> *From:* mpls [mailto:mpls-bounces@ietf.org <mpls-bounces@ietf.org>] *On
> Behalf Of *Stewart Bryant
> *Sent:* Wednesday, May 02, 2018 9:52 AM
> *To:* Andrew G. Malis <agmalis@gmail.com>; Loa Andersson <loa@pi.nu>
> *Cc:* mpls@ietf.org; spring@ietf.org; mpls-ads@ietf.org;
> draft-ietf-mpls-spring-entropy-label@ietf.org
> *Subject:* Re: [mpls] [spring] should
> draft-ietf-mpls-spring-entropy-label be published as a RFC on the standar=
ds
> track?
>
>
>
> Be careful.
>
> There is text in the draft that talks about ECMP behaviour in different
> parts of the path, which implies an expectation that the EL is the sole
> source of entropy. If we make this ST then we will be implicitly
> standardizing that behaviour. Now as it happens, I thing we need to updat=
e
> the EL behaviour to make it the sole source of entropy, because that solv=
es
> a number of problems, particularly in network instrumentation, but we nee=
d
> to do that explicitly and not as an artefact of this draft.
>
> So the way I see it, either this draft is published as informational, or
> it is published as ST without any text that implies that the EL is the so=
le
> source of entropy, or we harden the EL behaviour (which I think we need t=
o
> do) and this draft is published with a normative reference to an RFC that
> specifies the stricter EL behaviour.
>
> - Stewart
>
>
>
> On 02/05/2018 14:01, Andrew G. Malis wrote:
>
> Loa,
>
>
>
> There=E2=80=99s plenty of RFC 2119 language in the draft, so I support ma=
king this
> standards track.
>
>
>
> Cheers,
>
> Andy
>
>
>
>
>
> On Wed, May 2, 2018 at 3:44 AM, Loa Andersson <loa@pi.nu> wrote:
>
> Working Group,
>
> February 1st the MPLS working Group requested that draft-ietf-mpls-
> spring-entropy-label should be published as an Informational RFC.
>
> During the RTG Directorate and AD reviews the question whether the
> document should instead be published as a RFC on the Standards Track
> has been raised.
>
> The decision to make the document Informational was taken "a long time
> ago", based on discussions between the authors and involving the
> document shepherd, on the wg mailing list. At that point it we were
> convinced that the document should be progressed as an Informational
> document.
>
> It turns out that there has been such changes to the document that we
> now would like to request input from the working group if we should make
> the document a Standards Track RFC.
>
> Daniele's RTG Directorate review can be found at at:
>
> https://datatracker.ietf.org/doc/review-ietf-mpls-spring-entropy-label-08=
-rtgdir-lc-ceccarelli-2018-02-21/
> <https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__datatracker.ietf.=
org_doc_review-2Dietf-2Dmpls-2Dspring-2Dentropy-2Dlabel-2D08-2Drtgdir-2Dlc-=
2Dceccarelli-2D2018-2D02-2D21_&d=3DDwMGaQ&c=3DHAkYuh63rsuhr6Scbfh0UjBXeMK-n=
db3voDTXcWzoCI&r=3DCRB2tJiQePk0cT-h5LGhEWH-s_xXXup3HzvBSMRj5VE&m=3D7_r3cJDG=
9p57NRbEtEFwAyBK-8a5dmfxyolD2L0t-NY&s=3D8uWamWCicXKfKdzVgZT8gX3j8YO9Yo2Eb3m=
ZxOCMNnI&e=3D>
>
> All the issues, with the exception whether it should be Informational
> or Standards track, has been resolved as part AD review.
>
> If the document is progressed as a Standard Tracks document then we
> also need to answer the question whether this is an update RFC 6790.
>
> This mail starts a one week poll (ending May 9) to see if we have
> support to make the document a Standards Track document. If you support
> placing it on the Standards Track also consider if it is an update to
> RFC 6790.
>
> Please send your comments to the MPLS wg mailing list ( mpls@ietf.org ).
>
> /Loa
> for the mpls wf co-chairs
>
> PS
>
> I'm copying the spring working group on this mail.
> --
>
>
> Loa Andersson                        email: loa@pi.nu
> Senior MPLS Expert
> Bronze Dragon Consulting             phone: +46 739 81 21 64
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
> <https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.ietf.org_mail=
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yBK-8a5dmfxyolD2L0t-NY&s=3D7zu_z-7g4wBIOav02jUg5eWNVpu_UbyFhy3Ea7r7wKA&e=3D=
>
>
>
>
>
>
> _______________________________________________
>
> spring mailing list
>
> spring@ietf.org
>
> https://www.ietf.org/mailman/listinfo/spring <https://urldefense.proofpoi=
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>
>
> _______________________________________________
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> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>

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<div dir=3D"ltr">I agree with adding such a statement here if this document=
 should be standards track. It&#39;s not clear to me that such an implicati=
on is intended by the draft.<div><br></div><div>r.</div></div><br><div clas=
s=3D"gmail_quote"><div dir=3D"ltr">On Wed, May 2, 2018 at 8:04 AM John E Dr=
ake &lt;<a href=3D"mailto:jdrake@juniper.net">jdrake@juniper.net</a>&gt; wr=
ote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;=
border-left:1px #ccc solid;padding-left:1ex">





<div bgcolor=3D"white" lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"m_-7339806995996779205WordSection1">
<p class=3D"MsoNormal"><span style=3D"color:#1f497d">Stewart,<u></u><u></u>=
</span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d"><u></u>=C2=A0<u></u></=
span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d">Realistically, I think=
 your proposal is an example of closing the barn door after the horse has b=
olted.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d"><u></u>=C2=A0<u></u></=
span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d">Yours Irrespectively,<=
u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d"><u></u>=C2=A0<u></u></=
span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d">John<u></u><u></u></sp=
an></p>
</div>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d"><u></u>=C2=A0<u></u></=
span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"color:windowtext">From:</span></b>=
<span style=3D"color:windowtext"> spring &lt;<a href=3D"mailto:spring-bounc=
es@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Eric Gray<br>
<b>Sent:</b> Wednesday, May 2, 2018 10:28 AM<br>
<b>To:</b> Stewart Bryant &lt;<a href=3D"mailto:stewart.bryant@gmail.com" t=
arget=3D"_blank">stewart.bryant@gmail.com</a>&gt;; Andrew G. Malis &lt;<a h=
ref=3D"mailto:agmalis@gmail.com" target=3D"_blank">agmalis@gmail.com</a>&gt=
;; Loa Andersson &lt;<a href=3D"mailto:loa@pi.nu" target=3D"_blank">loa@pi.=
nu</a>&gt;</span></p></div></div></div></div></div><div bgcolor=3D"white" l=
ang=3D"EN-US" link=3D"blue" vlink=3D"purple"><div class=3D"m_-7339806995996=
779205WordSection1"><div style=3D"border:none;border-left:solid blue 1.5pt;=
padding:0in 0in 0in 4.0pt"><div><div style=3D"border:none;border-top:solid =
#e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in"><p class=3D"MsoNormal"><span style=
=3D"color:windowtext"><br>
<b>Cc:</b> <a href=3D"mailto:mpls@ietf.org" target=3D"_blank">mpls@ietf.org=
</a>; <a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org<=
/a>; <a href=3D"mailto:mpls-ads@ietf.org" target=3D"_blank">mpls-ads@ietf.o=
rg</a>; <a href=3D"mailto:draft-ietf-mpls-spring-entropy-label@ietf.org" ta=
rget=3D"_blank">draft-ietf-mpls-spring-entropy-label@ietf.org</a><br>
</span></p></div></div></div></div></div><div bgcolor=3D"white" lang=3D"EN-=
US" link=3D"blue" vlink=3D"purple"><div class=3D"m_-7339806995996779205Word=
Section1"><div style=3D"border:none;border-left:solid blue 1.5pt;padding:0i=
n 0in 0in 4.0pt"><div><div style=3D"border:none;border-top:solid #e1e1e1 1.=
0pt;padding:3.0pt 0in 0in 0in"><p class=3D"MsoNormal"><span style=3D"color:=
windowtext"><b>Subject:</b> Re: [spring] [mpls] should draft-ietf-mpls-spri=
ng-entropy-label be published as a RFC on the standards track?<u></u><u></u=
></span></p>
</div>
</div></div></div></div><div bgcolor=3D"white" lang=3D"EN-US" link=3D"blue"=
 vlink=3D"purple"><div class=3D"m_-7339806995996779205WordSection1"><div st=
yle=3D"border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt">
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext">Stewart,<u></u><u><=
/u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext"><u></u>=C2=A0<u></u=
></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext">=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 At=
 least one view of the purpose of an Entropy label is that it _<i>adds</i>_=
 entropy to the process of path selection.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext"><u></u>=C2=A0<u></u=
></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext">=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Ex=
plicitly limiting EL behavior to rely exclusively on use of the entropy lab=
el would also explicitly _<i>limit</i>_ the total entropy to whatever the i=
mplementation that provided the entropy
 label was implemented to treat as _<i>sufficient</i>_ among all paths in t=
he ECMP gestalt, possibly including branches that implementation might not =
know about.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext"><u></u>=C2=A0<u></u=
></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext">=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 I =
doubt very much that many of the problems you refer to would have arisen if=
 folks generally felt that the entropy label =E2=80=93 by itself =E2=80=93 =
provides sufficient entropy.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext"><u></u>=C2=A0<u></u=
></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext">=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 It=
 might make sense to impose this restriction =E2=80=93 optionally =E2=80=93=
 when a deployment occurs in which any particular pathological behavior mig=
ht be expected to occur.
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext"><u></u>=C2=A0<u></u=
></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext">=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 In=
 that case, it might be very important to ensure that the limited approache=
s available for maximizing efficient load distribution via explicit and exc=
lusive use of the entropy label are acceptable
 to a reasonably diverse set of implementers, as support for at least one o=
f those approaches would then become a mandatory part of every standard imp=
lementation.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext"><u></u>=C2=A0<u></u=
></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext">=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Ev=
en so, I don=E2=80=99t believe it is a good idea to restrict implementation=
s from using other approaches in every case.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext"><u></u>=C2=A0<u></u=
></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext">=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Th=
e simplest example possible (where doing so is a big problem) is one where =
the entropy labels provided have N possible values=C2=A0 and there are M po=
ssible paths, where M&gt;N. In any scenario where
 this occurs, M-N paths simply will not be used.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext"><u></u>=C2=A0<u></u=
></span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext">--<u></u><u></u></s=
pan></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext">Eric<u></u><u></u><=
/span></p>
<p class=3D"MsoNormal"><span style=3D"color:windowtext"><u></u>=C2=A0<u></u=
></span></p>
<div>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"color:windowtext">From:</span></b>=
<span style=3D"color:windowtext"> mpls [<a href=3D"mailto:mpls-bounces@ietf=
.org" target=3D"_blank">mailto:mpls-bounces@ietf.org</a>]
<b>On Behalf Of </b>Stewart Bryant<br>
<b>Sent:</b> Wednesday, May 02, 2018 9:52 AM<br>
<b>To:</b> Andrew G. Malis &lt;<a href=3D"mailto:agmalis@gmail.com" target=
=3D"_blank">agmalis@gmail.com</a>&gt;; Loa Andersson &lt;<a href=3D"mailto:=
loa@pi.nu" target=3D"_blank">loa@pi.nu</a>&gt;<br>
<b>Cc:</b> <a href=3D"mailto:mpls@ietf.org" target=3D"_blank">mpls@ietf.org=
</a>; <a href=3D"mailto:spring@ietf.org" target=3D"_blank">
spring@ietf.org</a>; <a href=3D"mailto:mpls-ads@ietf.org" target=3D"_blank"=
>mpls-ads@ietf.org</a>; <a href=3D"mailto:draft-ietf-mpls-spring-entropy-la=
bel@ietf.org" target=3D"_blank">
draft-ietf-mpls-spring-entropy-label@ietf.org</a><br>
<b>Subject:</b> Re: [mpls] [spring] should draft-ietf-mpls-spring-entropy-l=
abel be published as a RFC on the standards track?<u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p>Be careful.<u></u><u></u></p>
<p>There is text in the draft that talks about ECMP behaviour in different =
parts of the path, which implies an expectation that the EL is the sole sou=
rce of entropy. If we make this ST then we will be implicitly standardizing=
 that behaviour. Now as it happens,
 I thing we need to update the EL behaviour to make it the sole source of e=
ntropy, because that solves a number of problems, particularly in network i=
nstrumentation, but we need to do that explicitly and not as an artefact of=
 this draft.<u></u><u></u></p>
<p>So the way I see it, either this draft is published as informational, or=
 it is published as ST without any text that implies that the EL is the sol=
e source of entropy, or we harden the EL behaviour (which I think we need t=
o do) and this draft is published
 with a normative reference to an RFC that specifies the stricter EL behavi=
our.<u></u><u></u></p>
<p>- Stewart<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">On 02/05/2018 14:01, Andrew G. Malis wrote:<u></u><u=
></u></p>
</div>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class=3D"MsoNormal">Loa, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">There=E2=80=99s plenty of RFC 2119 language in the d=
raft, so I support making this standards track.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Cheers,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Andy<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"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">On Wed, May 2, 2018 at 3:44 AM, Loa Andersson &lt;<a=
 href=3D"mailto:loa@pi.nu" target=3D"_blank">loa@pi.nu</a>&gt; wrote:<u></u=
><u></u></p>
<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">
<p class=3D"MsoNormal">Working Group,<br>
<br>
February 1st the MPLS working Group requested that draft-ietf-mpls-<br>
spring-entropy-label should be published as an Informational RFC.<br>
<br>
During the RTG Directorate and AD reviews the question whether the<br>
document should instead be published as a RFC on the Standards Track<br>
has been raised.<br>
<br>
The decision to make the document Informational was taken &quot;a long time=
<br>
ago&quot;, based on discussions between the authors and involving the<br>
document shepherd, on the wg mailing list. At that point it we were<br>
convinced that the document should be progressed as an Informational<br>
document.<br>
<br>
It turns out that there has been such changes to the document that we<br>
now would like to request input from the working group if we should make<br=
>
the document a Standards Track RFC.<br>
<br>
Daniele&#39;s RTG Directorate review can be found at at:<br>
<a href=3D"https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__datatrack=
er.ietf.org_doc_review-2Dietf-2Dmpls-2Dspring-2Dentropy-2Dlabel-2D08-2Drtgd=
ir-2Dlc-2Dceccarelli-2D2018-2D02-2D21_&amp;d=3DDwMGaQ&amp;c=3DHAkYuh63rsuhr=
6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&amp;r=3DCRB2tJiQePk0cT-h5LGhEWH-s_xXXup3HzvB=
SMRj5VE&amp;m=3D7_r3cJDG9p57NRbEtEFwAyBK-8a5dmfxyolD2L0t-NY&amp;s=3D8uWamWC=
icXKfKdzVgZT8gX3j8YO9Yo2Eb3mZxOCMNnI&amp;e=3D" target=3D"_blank">https://da=
tatracker.ietf.org/doc/review-ietf-mpls-spring-entropy-label-08-rtgdir-lc-c=
eccarelli-2018-02-21/</a><br>
<br>
All the issues, with the exception whether it should be Informational<br>
or Standards track, has been resolved as part AD review.<br>
<br>
If the document is progressed as a Standard Tracks document then we<br>
also need to answer the question whether this is an update RFC 6790.<br>
<br>
This mail starts a one week poll (ending May 9) to see if we have<br>
support to make the document a Standards Track document. If you support<br>
placing it on the Standards Track also consider if it is an update to<br>
RFC 6790.<br>
<br>
Please send your comments to the MPLS wg mailing list ( <a href=3D"mailto:m=
pls@ietf.org" target=3D"_blank">
mpls@ietf.org</a> ).<br>
<br>
/Loa<br>
for the mpls wf co-chairs<br>
<br>
PS<br>
<br>
I&#39;m copying the spring working group on this mail.<span style=3D"color:=
#888888"><br>
<span class=3D"m_-7339806995996779205hoenzb">-- </span><br>
<br>
<br>
<span class=3D"m_-7339806995996779205hoenzb">Loa Andersson=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 email: <=
a href=3D"mailto:loa@pi.nu" target=3D"_blank">
loa@pi.nu</a></span><br>
<span class=3D"m_-7339806995996779205hoenzb">Senior MPLS Expert</span><br>
<span class=3D"m_-7339806995996779205hoenzb">Bronze Dragon Consulting=C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0phone: +46 739 81 21 64</span><br=
>
<br>
<span class=3D"m_-7339806995996779205hoenzb">______________________________=
_________________</span><br>
<span class=3D"m_-7339806995996779205hoenzb">mpls mailing list</span><br>
<span class=3D"m_-7339806995996779205hoenzb"><a href=3D"mailto:mpls@ietf.or=
g" target=3D"_blank">mpls@ietf.org</a></span><br>
<span class=3D"m_-7339806995996779205hoenzb"><a href=3D"https://urldefense.=
proofpoint.com/v2/url?u=3Dhttps-3A__www.ietf.org_mailman_listinfo_mpls&amp;=
d=3DDwMGaQ&amp;c=3DHAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&amp;r=3DCRB2=
tJiQePk0cT-h5LGhEWH-s_xXXup3HzvBSMRj5VE&amp;m=3D7_r3cJDG9p57NRbEtEFwAyBK-8a=
5dmfxyolD2L0t-NY&amp;s=3D7zu_z-7g4wBIOav02jUg5eWNVpu_UbyFhy3Ea7r7wKA&amp;e=
=3D" target=3D"_blank">https://www.ietf.org/mailman/listinfo/mpls</a></span=
></span><u></u><u></u></p>
</blockquote>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><br>
<br>
<u></u><u></u></p>
<pre>_______________________________________________<u></u><u></u></pre>
<pre>spring mailing list<u></u><u></u></pre>
<pre><a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</=
a><u></u><u></u></pre>
<pre><a href=3D"https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.=
ietf.org_mailman_listinfo_spring&amp;d=3DDwMGaQ&amp;c=3DHAkYuh63rsuhr6Scbfh=
0UjBXeMK-ndb3voDTXcWzoCI&amp;r=3DCRB2tJiQePk0cT-h5LGhEWH-s_xXXup3HzvBSMRj5V=
E&amp;m=3D7_r3cJDG9p57NRbEtEFwAyBK-8a5dmfxyolD2L0t-NY&amp;s=3DBre3I6DpvXPKY=
T12vpNTyKEsnhA6jqbAP4Pc59KLc3c&amp;e=3D" target=3D"_blank">https://www.ietf=
.org/mailman/listinfo/spring</a><u></u><u></u></pre>
</blockquote>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</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>

--0000000000006acb31056b3a8f01--


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Subject: Re: [spring] [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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Well, yes and no.

Presumably routers know what they are load balancing on and can report 
that to the control & management plane, a path can be chosen that 
explicitly takes a path based on the desired behaviour.

Also presumably if there is a need, the ECMP behaviour could be modified 
to only use the EL.

My big concern is that there are a number of instrumentation (and maybe 
path construction) cases where we really would like to see EL only ECMP.

- Stewart


On 02/05/2018 16:03, John E Drake wrote:
>
> Stewart,
>
> Realistically, I think your proposal is an example of closing the barn 
> door after the horse has bolted.
>
> Yours Irrespectively,
>
> John
>
> *From:*spring <spring-bounces@ietf.org> *On Behalf Of *Eric Gray
> *Sent:* Wednesday, May 2, 2018 10:28 AM
> *To:* Stewart Bryant <stewart.bryant@gmail.com>; Andrew G. Malis 
> <agmalis@gmail.com>; Loa Andersson <loa@pi.nu>
> *Cc:* mpls@ietf.org; spring@ietf.org; mpls-ads@ietf.org; 
> draft-ietf-mpls-spring-entropy-label@ietf.org
> *Subject:* Re: [spring] [mpls] should 
> draft-ietf-mpls-spring-entropy-label be published as a RFC on the 
> standards track?
>
> Stewart,
>
> At least one view of the purpose of an Entropy label is that it 
> _/adds/_ entropy to the process of path selection.
>
> Explicitly limiting EL behavior to rely exclusively on use of the 
> entropy label would also explicitly _/limit/_ the total entropy to 
> whatever the implementation that provided the entropy label was 
> implemented to treat as _/sufficient/_ among all paths in the ECMP 
> gestalt, possibly including branches that implementation might not 
> know about.
>
> I doubt very much that many of the problems you refer to would have 
> arisen if folks generally felt that the entropy label – by itself – 
> provides sufficient entropy.
>
> It might make sense to impose this restriction – optionally – when a 
> deployment occurs in which any particular pathological behavior might 
> be expected to occur.
>
> In that case, it might be very important to ensure that the limited 
> approaches available for maximizing efficient load distribution via 
> explicit and exclusive use of the entropy label are acceptable to a 
> reasonably diverse set of implementers, as support for at least one of 
> those approaches would then become a mandatory part of every standard 
> implementation.
>
> Even so, I don’t believe it is a good idea to restrict implementations 
> from using other approaches in every case.
>
> The simplest example possible (where doing so is a big problem) is one 
> where the entropy labels provided have N possible values  and there 
> are M possible paths, where M>N. In any scenario where this occurs, 
> M-N paths simply will not be used.
>
> --
>
> Eric
>
> *From:*mpls [mailto:mpls-bounces@ietf.org] *On Behalf Of *Stewart Bryant
> *Sent:* Wednesday, May 02, 2018 9:52 AM
> *To:* Andrew G. Malis <agmalis@gmail.com <mailto:agmalis@gmail.com>>; 
> Loa Andersson <loa@pi.nu <mailto:loa@pi.nu>>
> *Cc:* mpls@ietf.org <mailto:mpls@ietf.org>; spring@ietf.org 
> <mailto:spring@ietf.org>; mpls-ads@ietf.org 
> <mailto:mpls-ads@ietf.org>; 
> draft-ietf-mpls-spring-entropy-label@ietf.org 
> <mailto:draft-ietf-mpls-spring-entropy-label@ietf.org>
> *Subject:* Re: [mpls] [spring] should 
> draft-ietf-mpls-spring-entropy-label be published as a RFC on the 
> standards track?
>
> Be careful.
>
> There is text in the draft that talks about ECMP behaviour in 
> different parts of the path, which implies an expectation that the EL 
> is the sole source of entropy. If we make this ST then we will be 
> implicitly standardizing that behaviour. Now as it happens, I thing we 
> need to update the EL behaviour to make it the sole source of entropy, 
> because that solves a number of problems, particularly in network 
> instrumentation, but we need to do that explicitly and not as an 
> artefact of this draft.
>
> So the way I see it, either this draft is published as informational, 
> or it is published as ST without any text that implies that the EL is 
> the sole source of entropy, or we harden the EL behaviour (which I 
> think we need to do) and this draft is published with a normative 
> reference to an RFC that specifies the stricter EL behaviour.
>
> - Stewart
>
> On 02/05/2018 14:01, Andrew G. Malis wrote:
>
>     Loa,
>
>     There’s plenty of RFC 2119 language in the draft, so I support
>     making this standards track.
>
>     Cheers,
>
>     Andy
>
>     On Wed, May 2, 2018 at 3:44 AM, Loa Andersson <loa@pi.nu
>     <mailto:loa@pi.nu>> wrote:
>
>         Working Group,
>
>         February 1st the MPLS working Group requested that
>         draft-ietf-mpls-
>         spring-entropy-label should be published as an Informational RFC.
>
>         During the RTG Directorate and AD reviews the question whether the
>         document should instead be published as a RFC on the Standards
>         Track
>         has been raised.
>
>         The decision to make the document Informational was taken "a
>         long time
>         ago", based on discussions between the authors and involving the
>         document shepherd, on the wg mailing list. At that point it we
>         were
>         convinced that the document should be progressed as an
>         Informational
>         document.
>
>         It turns out that there has been such changes to the document
>         that we
>         now would like to request input from the working group if we
>         should make
>         the document a Standards Track RFC.
>
>         Daniele's RTG Directorate review can be found at at:
>         https://datatracker.ietf.org/doc/review-ietf-mpls-spring-entropy-label-08-rtgdir-lc-ceccarelli-2018-02-21/
>         <https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_review-2Dietf-2Dmpls-2Dspring-2Dentropy-2Dlabel-2D08-2Drtgdir-2Dlc-2Dceccarelli-2D2018-2D02-2D21_&d=DwMGaQ&c=HAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&r=CRB2tJiQePk0cT-h5LGhEWH-s_xXXup3HzvBSMRj5VE&m=7_r3cJDG9p57NRbEtEFwAyBK-8a5dmfxyolD2L0t-NY&s=8uWamWCicXKfKdzVgZT8gX3j8YO9Yo2Eb3mZxOCMNnI&e=>
>
>         All the issues, with the exception whether it should be
>         Informational
>         or Standards track, has been resolved as part AD review.
>
>         If the document is progressed as a Standard Tracks document
>         then we
>         also need to answer the question whether this is an update RFC
>         6790.
>
>         This mail starts a one week poll (ending May 9) to see if we have
>         support to make the document a Standards Track document. If
>         you support
>         placing it on the Standards Track also consider if it is an
>         update to
>         RFC 6790.
>
>         Please send your comments to the MPLS wg mailing list (
>         mpls@ietf.org <mailto:mpls@ietf.org> ).
>
>         /Loa
>         for the mpls wf co-chairs
>
>         PS
>
>         I'm copying the spring working group on this mail.
>         -- 
>
>
>         Loa Andersson         email: loa@pi.nu <mailto:loa@pi.nu>
>         Senior MPLS Expert
>         Bronze Dragon Consulting        phone: +46 739 81 21 64
>
>         _______________________________________________
>         mpls mailing list
>         mpls@ietf.org <mailto:mpls@ietf.org>
>         https://www.ietf.org/mailman/listinfo/mpls
>         <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ietf.org_mailman_listinfo_mpls&d=DwMGaQ&c=HAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&r=CRB2tJiQePk0cT-h5LGhEWH-s_xXXup3HzvBSMRj5VE&m=7_r3cJDG9p57NRbEtEFwAyBK-8a5dmfxyolD2L0t-NY&s=7zu_z-7g4wBIOav02jUg5eWNVpu_UbyFhy3Ea7r7wKA&e=>
>
>
>
>     _______________________________________________
>
>     spring mailing list
>
>     spring@ietf.org <mailto:spring@ietf.org>
>
>     https://www.ietf.org/mailman/listinfo/spring
>     <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ietf.org_mailman_listinfo_spring&d=DwMGaQ&c=HAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&r=CRB2tJiQePk0cT-h5LGhEWH-s_xXXup3HzvBSMRj5VE&m=7_r3cJDG9p57NRbEtEFwAyBK-8a5dmfxyolD2L0t-NY&s=Bre3I6DpvXPKYT12vpNTyKEsnhA6jqbAP4Pc59KLc3c&e=>
>


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    <p><br>
    </p>
    <p>Well, yes and no.</p>
    <p>Presumably routers know what they are load balancing on and can
      report that to the control &amp; management plane, a path can be
      chosen that explicitly takes a path based on the desired
      behaviour.</p>
    <p>Also presumably if there is a need, the ECMP behaviour could be
      modified to only use the EL.</p>
    <p>My big concern is that there are a number of instrumentation (and
      maybe path construction) cases where we really would like to see
      EL only ECMP.</p>
    <p>- Stewart<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 02/05/2018 16:03, John E Drake
      wrote:<br>
    </div>
    <blockquote type="cite"
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      <div class="WordSection1">
        <p class="MsoNormal"><span style="color:#1F497D">Stewart,<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="color:#1F497D">Realistically,
            I think your proposal is an example of closing the barn door
            after the horse has bolted.<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
        <div>
          <p class="MsoNormal"><span style="color:#1F497D">Yours
              Irrespectively,<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
          <p class="MsoNormal"><span style="color:#1F497D">John<o:p></o:p></span></p>
        </div>
        <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
        <div style="border:none;border-left:solid blue 1.5pt;padding:0in
          0in 0in 4.0pt">
          <div>
            <div style="border:none;border-top:solid #E1E1E1
              1.0pt;padding:3.0pt 0in 0in 0in">
              <p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span
                  style="color:windowtext"> spring
                  <a class="moz-txt-link-rfc2396E" href="mailto:spring-bounces@ietf.org">&lt;spring-bounces@ietf.org&gt;</a>
                  <b>On Behalf Of </b>Eric Gray<br>
                  <b>Sent:</b> Wednesday, May 2, 2018 10:28 AM<br>
                  <b>To:</b> Stewart Bryant
                  <a class="moz-txt-link-rfc2396E" href="mailto:stewart.bryant@gmail.com">&lt;stewart.bryant@gmail.com&gt;</a>; Andrew G. Malis
                  <a class="moz-txt-link-rfc2396E" href="mailto:agmalis@gmail.com">&lt;agmalis@gmail.com&gt;</a>; Loa Andersson
                  <a class="moz-txt-link-rfc2396E" href="mailto:loa@pi.nu">&lt;loa@pi.nu&gt;</a><br>
                  <b>Cc:</b> <a class="moz-txt-link-abbreviated" href="mailto:mpls@ietf.org">mpls@ietf.org</a>; <a class="moz-txt-link-abbreviated" href="mailto:spring@ietf.org">spring@ietf.org</a>;
                  <a class="moz-txt-link-abbreviated" href="mailto:mpls-ads@ietf.org">mpls-ads@ietf.org</a>;
                  <a class="moz-txt-link-abbreviated" href="mailto:draft-ietf-mpls-spring-entropy-label@ietf.org">draft-ietf-mpls-spring-entropy-label@ietf.org</a><br>
                  <b>Subject:</b> Re: [spring] [mpls] should
                  draft-ietf-mpls-spring-entropy-label be published as a
                  RFC on the standards track?<o:p></o:p></span></p>
            </div>
          </div>
          <p class="MsoNormal"><o:p> </o:p></p>
          <p class="MsoNormal"><span style="color:windowtext">Stewart,<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext">               
              At least one view of the purpose of an Entropy label is
              that it _<i>adds</i>_ entropy to the process of path
              selection.<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext">               
              Explicitly limiting EL behavior to rely exclusively on use
              of the entropy label would also explicitly _<i>limit</i>_
              the total entropy to whatever the implementation that
              provided the entropy label was implemented to treat as _<i>sufficient</i>_
              among all paths in the ECMP gestalt, possibly including
              branches that implementation might not know about.<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext">               
              I doubt very much that many of the problems you refer to
              would have arisen if folks generally felt that the entropy
              label – by itself – provides sufficient entropy.<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext">               
              It might make sense to impose this restriction –
              optionally – when a deployment occurs in which any
              particular pathological behavior might be expected to
              occur.
              <o:p></o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext">               
              In that case, it might be very important to ensure that
              the limited approaches available for maximizing efficient
              load distribution via explicit and exclusive use of the
              entropy label are acceptable to a reasonably diverse set
              of implementers, as support for at least one of those
              approaches would then become a mandatory part of every
              standard implementation.<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext">               
              Even so, I don’t believe it is a good idea to restrict
              implementations from using other approaches in every case.<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext">               
              The simplest example possible (where doing so is a big
              problem) is one where the entropy labels provided have N
              possible values  and there are M possible paths, where
              M&gt;N. In any scenario where this occurs, M-N paths
              simply will not be used.<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext">--<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext">Eric<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
          <div>
            <div style="border:none;border-top:solid #E1E1E1
              1.0pt;padding:3.0pt 0in 0in 0in">
              <p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span
                  style="color:windowtext"> mpls [<a
                    href="mailto:mpls-bounces@ietf.org"
                    moz-do-not-send="true">mailto:mpls-bounces@ietf.org</a>]
                  <b>On Behalf Of </b>Stewart Bryant<br>
                  <b>Sent:</b> Wednesday, May 02, 2018 9:52 AM<br>
                  <b>To:</b> Andrew G. Malis &lt;<a
                    href="mailto:agmalis@gmail.com"
                    moz-do-not-send="true">agmalis@gmail.com</a>&gt;;
                  Loa Andersson &lt;<a href="mailto:loa@pi.nu"
                    moz-do-not-send="true">loa@pi.nu</a>&gt;<br>
                  <b>Cc:</b> <a href="mailto:mpls@ietf.org"
                    moz-do-not-send="true">mpls@ietf.org</a>; <a
                    href="mailto:spring@ietf.org" moz-do-not-send="true">
                    spring@ietf.org</a>; <a
                    href="mailto:mpls-ads@ietf.org"
                    moz-do-not-send="true">mpls-ads@ietf.org</a>; <a
                    href="mailto:draft-ietf-mpls-spring-entropy-label@ietf.org"
                    moz-do-not-send="true">
                    draft-ietf-mpls-spring-entropy-label@ietf.org</a><br>
                  <b>Subject:</b> Re: [mpls] [spring] should
                  draft-ietf-mpls-spring-entropy-label be published as a
                  RFC on the standards track?<o:p></o:p></span></p>
            </div>
          </div>
          <p class="MsoNormal"><o:p> </o:p></p>
          <p>Be careful.<o:p></o:p></p>
          <p>There is text in the draft that talks about ECMP behaviour
            in different parts of the path, which implies an expectation
            that the EL is the sole source of entropy. If we make this
            ST then we will be implicitly standardizing that behaviour.
            Now as it happens, I thing we need to update the EL
            behaviour to make it the sole source of entropy, because
            that solves a number of problems, particularly in network
            instrumentation, but we need to do that explicitly and not
            as an artefact of this draft.<o:p></o:p></p>
          <p>So the way I see it, either this draft is published as
            informational, or it is published as ST without any text
            that implies that the EL is the sole source of entropy, or
            we harden the EL behaviour (which I think we need to do) and
            this draft is published with a normative reference to an RFC
            that specifies the stricter EL behaviour.<o:p></o:p></p>
          <p>- Stewart<o:p></o:p></p>
          <p class="MsoNormal"><o:p> </o:p></p>
          <div>
            <p class="MsoNormal">On 02/05/2018 14:01, Andrew G. Malis
              wrote:<o:p></o:p></p>
          </div>
          <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
            <div>
              <p class="MsoNormal">Loa, <o:p></o:p></p>
              <div>
                <p class="MsoNormal"><o:p> </o:p></p>
              </div>
              <div>
                <p class="MsoNormal">There’s plenty of RFC 2119 language
                  in the draft, so I support making this standards
                  track.<o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><o:p> </o:p></p>
              </div>
              <div>
                <p class="MsoNormal">Cheers,<o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal">Andy<o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><o:p> </o:p></p>
              </div>
            </div>
            <div>
              <p class="MsoNormal"><o:p> </o:p></p>
              <div>
                <p class="MsoNormal">On Wed, May 2, 2018 at 3:44 AM, Loa
                  Andersson &lt;<a href="mailto:loa@pi.nu"
                    target="_blank" moz-do-not-send="true">loa@pi.nu</a>&gt;
                  wrote:<o:p></o:p></p>
                <blockquote style="border:none;border-left:solid #CCCCCC
                  1.0pt;padding:0in 0in 0in
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
                  <p class="MsoNormal">Working Group,<br>
                    <br>
                    February 1st the MPLS working Group requested that
                    draft-ietf-mpls-<br>
                    spring-entropy-label should be published as an
                    Informational RFC.<br>
                    <br>
                    During the RTG Directorate and AD reviews the
                    question whether the<br>
                    document should instead be published as a RFC on the
                    Standards Track<br>
                    has been raised.<br>
                    <br>
                    The decision to make the document Informational was
                    taken "a long time<br>
                    ago", based on discussions between the authors and
                    involving the<br>
                    document shepherd, on the wg mailing list. At that
                    point it we were<br>
                    convinced that the document should be progressed as
                    an Informational<br>
                    document.<br>
                    <br>
                    It turns out that there has been such changes to the
                    document that we<br>
                    now would like to request input from the working
                    group if we should make<br>
                    the document a Standards Track RFC.<br>
                    <br>
                    Daniele's RTG Directorate review can be found at at:<br>
                    <a
href="https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_review-2Dietf-2Dmpls-2Dspring-2Dentropy-2Dlabel-2D08-2Drtgdir-2Dlc-2Dceccarelli-2D2018-2D02-2D21_&amp;d=DwMGaQ&amp;c=HAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&amp;r=CRB2tJiQePk0cT-h5LGhEWH-s_xXXup3HzvBSMRj5VE&amp;m=7_r3cJDG9p57NRbEtEFwAyBK-8a5dmfxyolD2L0t-NY&amp;s=8uWamWCicXKfKdzVgZT8gX3j8YO9Yo2Eb3mZxOCMNnI&amp;e="
                      target="_blank" moz-do-not-send="true">https://datatracker.ietf.org/doc/review-ietf-mpls-spring-entropy-label-08-rtgdir-lc-ceccarelli-2018-02-21/</a><br>
                    <br>
                    All the issues, with the exception whether it should
                    be Informational<br>
                    or Standards track, has been resolved as part AD
                    review.<br>
                    <br>
                    If the document is progressed as a Standard Tracks
                    document then we<br>
                    also need to answer the question whether this is an
                    update RFC 6790.<br>
                    <br>
                    This mail starts a one week poll (ending May 9) to
                    see if we have<br>
                    support to make the document a Standards Track
                    document. If you support<br>
                    placing it on the Standards Track also consider if
                    it is an update to<br>
                    RFC 6790.<br>
                    <br>
                    Please send your comments to the MPLS wg mailing
                    list ( <a href="mailto:mpls@ietf.org"
                      target="_blank" moz-do-not-send="true">
                      mpls@ietf.org</a> ).<br>
                    <br>
                    /Loa<br>
                    for the mpls wf co-chairs<br>
                    <br>
                    PS<br>
                    <br>
                    I'm copying the spring working group on this mail.<span
                      style="color:#888888"><br>
                      <span class="hoenzb">-- </span><br>
                      <br>
                      <br>
                      <span class="hoenzb">Loa Andersson               
                                email: <a href="mailto:loa@pi.nu"
                          target="_blank" moz-do-not-send="true">
                          loa@pi.nu</a></span><br>
                      <span class="hoenzb">Senior MPLS Expert</span><br>
                      <span class="hoenzb">Bronze Dragon Consulting     
                               phone: +46 739 81 21 64</span><br>
                      <br>
                      <span class="hoenzb">_______________________________________________</span><br>
                      <span class="hoenzb">mpls mailing list</span><br>
                      <span class="hoenzb"><a
                          href="mailto:mpls@ietf.org" target="_blank"
                          moz-do-not-send="true">mpls@ietf.org</a></span><br>
                      <span class="hoenzb"><a
href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ietf.org_mailman_listinfo_mpls&amp;d=DwMGaQ&amp;c=HAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&amp;r=CRB2tJiQePk0cT-h5LGhEWH-s_xXXup3HzvBSMRj5VE&amp;m=7_r3cJDG9p57NRbEtEFwAyBK-8a5dmfxyolD2L0t-NY&amp;s=7zu_z-7g4wBIOav02jUg5eWNVpu_UbyFhy3Ea7r7wKA&amp;e="
                          target="_blank" moz-do-not-send="true">https://www.ietf.org/mailman/listinfo/mpls</a></span></span><o:p></o:p></p>
                </blockquote>
              </div>
              <p class="MsoNormal"><o:p> </o:p></p>
            </div>
            <p class="MsoNormal" style="margin-bottom:12.0pt"><br>
              <br>
              <o:p></o:p></p>
            <pre>_______________________________________________<o:p></o:p></pre>
            <pre>spring mailing list<o:p></o:p></pre>
            <pre><a href="mailto:spring@ietf.org" moz-do-not-send="true">spring@ietf.org</a><o:p></o:p></pre>
            <pre><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ietf.org_mailman_listinfo_spring&amp;d=DwMGaQ&amp;c=HAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&amp;r=CRB2tJiQePk0cT-h5LGhEWH-s_xXXup3HzvBSMRj5VE&amp;m=7_r3cJDG9p57NRbEtEFwAyBK-8a5dmfxyolD2L0t-NY&amp;s=Bre3I6DpvXPKYT12vpNTyKEsnhA6jqbAP4Pc59KLc3c&amp;e=" moz-do-not-send="true">https://www.ietf.org/mailman/listinfo/spring</a><o:p></o:p></pre>
          </blockquote>
          <p class="MsoNormal"><o:p> </o:p></p>
        </div>
      </div>
    </blockquote>
    <br>
  </body>
</html>

--------------B93DCEEBDDB051BD45AC841F--


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From: Eric Gray <eric.gray@ericsson.com>
To: "Andrew G. Malis" <agmalis@gmail.com>, Loa Andersson <loa@pi.nu>
CC: "mpls@ietf.org" <mpls@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "mpls-ads@ietf.org" <mpls-ads@ietf.org>, "draft-ietf-mpls-spring-entropy-label@ietf.org" <draft-ietf-mpls-spring-entropy-label@ietf.org>
Thread-Topic: [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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Subject: Re: [spring] [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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From: "Andrew G. Malis" <agmalis@gmail.com>
Date: Wed, 2 May 2018 14:59:44 -0400
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To: Eric Gray <eric.gray@ericsson.com>
Cc: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>, "spring@ietf.org" <spring@ietf.org>,  "mpls-ads@ietf.org" <mpls-ads@ietf.org>,  "draft-ietf-mpls-spring-entropy-label@ietf.org" <draft-ietf-mpls-spring-entropy-label@ietf.org>
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Subject: Re: [spring] [mpls] should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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--000000000000daf417056b3db128
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Eric,

That=E2=80=99s a fair point, and a matter of interpretation of the draft. I=
t would
be more obvious that standards track was necessary if the draft defined new
message formats or TLVs on the wire, or if any requests were being made of
IANA. Neither is the case in this draft.

However, there is quite a bit of RFC 2119 language. That means that
interoperability requirements are being made of implementers of a
draft/RFC. An implementation MUST do the =E2=80=9CMUST=E2=80=9Ds, and so on=
, if they want
to play nicely with other implementations.

Informational status is great for documents like architectures, problem
statements, or to document how a particular vendor or operator did
something interesting. However, right in the abstract, this draft says
=E2=80=9CThis document examines and describes how ELs are to be applied to =
Segment
Routing MPLS.=E2=80=9D That, in combination with the RFC 2119 language, sou=
nds very
standards tracky, rather than informational, to me.

Cheers,
Andy


On Wed, May 2, 2018 at 2:23 PM, Eric Gray <eric.gray@ericsson.com> wrote:

> Andy,
>
>
>
>                 Don=E2=80=99t you feel that this is just a bit of a flip
> observation?
>
>
>
>                 Personally I agree that RFC 2119 =E2=80=9Clanguage=E2=80=
=9D and even a
> reference to RFC 2119 itself seems inappropriate in an =E2=80=9CFYI=E2=80=
=9D RFC.
>
>
>
>                 But I have been over-ridden on that before.
>
>
>
>                 I have to say, however that making something a standards
> track document _*because*_ it has RFC 2119 =E2=80=9Clanguage=E2=80=9D in =
it is a tad
> extreme.
>
>
>
>                 Know another RFC that has a lot of RFC 2119 =E2=80=9Clang=
uage=E2=80=9D in
> it that is not a standards track RFC?  RFC 2119=E2=80=A6
>
>
>
>                 =F0=9F=98=8A
>
>
>
> --
>
> Eric
>
>
>
> *From:* mpls [mailto:mpls-bounces@ietf.org] *On Behalf Of *Andrew G. Mali=
s
> *Sent:* Wednesday, May 02, 2018 9:01 AM
> *To:* Loa Andersson <loa@pi.nu>
> *Cc:* mpls@ietf.org; spring@ietf.org; mpls-ads@ietf.org;
> draft-ietf-mpls-spring-entropy-label@ietf.org
> *Subject:* Re: [mpls] should draft-ietf-mpls-spring-entropy-label be
> published as a RFC on the standards track?
>
>
>
> Loa,
>
>
>
> There=E2=80=99s plenty of RFC 2119 language in the draft, so I support ma=
king this
> standards track.
>
>
>
> Cheers,
>
> Andy
>
>
>
>
>
> On Wed, May 2, 2018 at 3:44 AM, Loa Andersson <loa@pi.nu> wrote:
>
> Working Group,
>
> February 1st the MPLS working Group requested that draft-ietf-mpls-
> spring-entropy-label should be published as an Informational RFC.
>
> During the RTG Directorate and AD reviews the question whether the
> document should instead be published as a RFC on the Standards Track
> has been raised.
>
> The decision to make the document Informational was taken "a long time
> ago", based on discussions between the authors and involving the
> document shepherd, on the wg mailing list. At that point it we were
> convinced that the document should be progressed as an Informational
> document.
>
> It turns out that there has been such changes to the document that we
> now would like to request input from the working group if we should make
> the document a Standards Track RFC.
>
> Daniele's RTG Directorate review can be found at at:
> https://datatracker.ietf.org/doc/review-ietf-mpls-spring-
> entropy-label-08-rtgdir-lc-ceccarelli-2018-02-21/
>
> All the issues, with the exception whether it should be Informational
> or Standards track, has been resolved as part AD review.
>
> If the document is progressed as a Standard Tracks document then we
> also need to answer the question whether this is an update RFC 6790.
>
> This mail starts a one week poll (ending May 9) to see if we have
> support to make the document a Standards Track document. If you support
> placing it on the Standards Track also consider if it is an update to
> RFC 6790.
>
> Please send your comments to the MPLS wg mailing list ( mpls@ietf.org ).
>
> /Loa
> for the mpls wf co-chairs
>
> PS
>
> I'm copying the spring working group on this mail.
> --
>
>
> Loa Andersson                        email: loa@pi.nu
> Senior MPLS Expert
> Bronze Dragon Consulting             phone: +46 739 81 21 64
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>
>
>

--000000000000daf417056b3db128
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Eric,<div><br></div><div>That=E2=80=99s a fair point, and =
a matter of interpretation of the draft. It would be more obvious that stan=
dards track was necessary if the draft defined new message formats or TLVs =
on the wire, or if any requests were being made of IANA. Neither is the cas=
e in this draft.<br><div><br></div><div>However, there is quite a bit of RF=
C 2119 language. That means that interoperability requirements are being ma=
de of implementers of a draft/RFC. An implementation MUST do the =E2=80=9CM=
UST=E2=80=9Ds, and so on, if they want to play nicely with other implementa=
tions.</div></div><div><br></div><div>Informational status is great for doc=
uments like architectures, problem statements, or to document how a particu=
lar vendor or operator did something interesting. However, right in the abs=
tract, this draft says =E2=80=9CThis document examines and describes how EL=
s are to be applied to Segment Routing MPLS.=E2=80=9D That, in combination =
with the RFC 2119 language, sounds very standards tracky, rather than infor=
mational, to me.</div><div><br></div><div>Cheers,</div><div>Andy</div><div>=
<br></div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">O=
n Wed, May 2, 2018 at 2:23 PM, Eric Gray <span dir=3D"ltr">&lt;<a href=3D"m=
ailto:eric.gray@ericsson.com" target=3D"_blank">eric.gray@ericsson.com</a>&=
gt;</span> wrote:<br><blockquote class=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_1760510505894215229WordSection1">
<p class=3D"MsoNormal">Andy,<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 Don=E2=80=99t you feel that this is=
 just a bit of a flip observation?<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 Personally I agree that RFC 2119 =
=E2=80=9Clanguage=E2=80=9D and even a reference to RFC 2119 itself seems in=
appropriate in an =E2=80=9CFYI=E2=80=9D RFC.<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 But I have been over-ridden on that=
 before.<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 I have to say, however that making =
something a standards track document _<i>because</i>_ it has RFC 2119 =E2=
=80=9Clanguage=E2=80=9D in it is a tad extreme.<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 Know another RFC that has a lot of =
RFC 2119 =E2=80=9Clanguage=E2=80=9D in it that is not a standards track RFC=
?=C2=A0 RFC 2119=E2=80=A6<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 <span style=3D"font-family:&quot;Se=
goe UI Emoji&quot;,sans-serif">
=F0=9F=98=8A</span><u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">--<u></u><u></u></p>
<p class=3D"MsoNormal">Eric<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><b>From:</b> mpls [mailto:<a href=3D"mailto:mpls-bou=
nces@ietf.org" target=3D"_blank">mpls-bounces@ietf.org</a>] <b>On Behalf Of
</b>Andrew G. Malis<br>
<b>Sent:</b> Wednesday, May 02, 2018 9:01 AM<br>
<b>To:</b> Loa Andersson &lt;<a href=3D"mailto:loa@pi.nu" target=3D"_blank"=
>loa@pi.nu</a>&gt;<span class=3D""><br>
<b>Cc:</b> <a href=3D"mailto:mpls@ietf.org" target=3D"_blank">mpls@ietf.org=
</a>; <a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org<=
/a>; <a href=3D"mailto:mpls-ads@ietf.org" target=3D"_blank">mpls-ads@ietf.o=
rg</a>; <a href=3D"mailto:draft-ietf-mpls-spring-entropy-label@ietf.org" ta=
rget=3D"_blank">draft-ietf-mpls-spring-<wbr>entropy-label@ietf.org</a><br>
</span><b>Subject:</b> Re: [mpls] should draft-ietf-mpls-spring-<wbr>entrop=
y-label be published as a RFC on the standards track?<u></u><u></u></p><div=
><div class=3D"h5">
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">Loa,<u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">There=E2=80=99s plenty of RFC 2119 language in the d=
raft, so I support making this standards track.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Cheers,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Andy<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"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">On Wed, May 2, 2018 at 3:44 AM, Loa Andersson &lt;<a=
 href=3D"mailto:loa@pi.nu" target=3D"_blank">loa@pi.nu</a>&gt; wrote:<u></u=
><u></u></p>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0i=
n 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<p class=3D"MsoNormal">Working Group,<br>
<br>
February 1st the MPLS working Group requested that draft-ietf-mpls-<br>
spring-entropy-label should be published as an Informational RFC.<br>
<br>
During the RTG Directorate and AD reviews the question whether the<br>
document should instead be published as a RFC on the Standards Track<br>
has been raised.<br>
<br>
The decision to make the document Informational was taken &quot;a long time=
<br>
ago&quot;, based on discussions between the authors and involving the<br>
document shepherd, on the wg mailing list. At that point it we were<br>
convinced that the document should be progressed as an Informational<br>
document.<br>
<br>
It turns out that there has been such changes to the document that we<br>
now would like to request input from the working group if we should make<br=
>
the document a Standards Track RFC.<br>
<br>
Daniele&#39;s RTG Directorate review can be found at at:<br>
<a href=3D"https://datatracker.ietf.org/doc/review-ietf-mpls-spring-entropy=
-label-08-rtgdir-lc-ceccarelli-2018-02-21/" target=3D"_blank">https://datat=
racker.ietf.org/<wbr>doc/review-ietf-mpls-spring-<wbr>entropy-label-08-rtgd=
ir-lc-<wbr>ceccarelli-2018-02-21/</a><br>
<br>
All the issues, with the exception whether it should be Informational<br>
or Standards track, has been resolved as part AD review.<br>
<br>
If the document is progressed as a Standard Tracks document then we<br>
also need to answer the question whether this is an update RFC 6790.<br>
<br>
This mail starts a one week poll (ending May 9) to see if we have<br>
support to make the document a Standards Track document. If you support<br>
placing it on the Standards Track also consider if it is an update to<br>
RFC 6790.<br>
<br>
Please send your comments to the MPLS wg mailing list ( <a href=3D"mailto:m=
pls@ietf.org" target=3D"_blank">
mpls@ietf.org</a> ).<br>
<br>
/Loa<br>
for the mpls wf co-chairs<br>
<br>
PS<br>
<br>
I&#39;m copying the spring working group on this mail.<span style=3D"color:=
#888888"><br>
<span class=3D"m_1760510505894215229hoenzb">-- </span><br>
<br>
<br>
<span class=3D"m_1760510505894215229hoenzb">Loa Andersson=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 email: <=
a href=3D"mailto:loa@pi.nu" target=3D"_blank">
loa@pi.nu</a></span><br>
<span class=3D"m_1760510505894215229hoenzb">Senior MPLS Expert</span><br>
<span class=3D"m_1760510505894215229hoenzb">Bronze Dragon Consulting=C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0phone: +46 739 81 21 64</span><br>
<br>
<span class=3D"m_1760510505894215229hoenzb">______________________________<=
wbr>_________________</span><br>
<span class=3D"m_1760510505894215229hoenzb">mpls mailing list</span><br>
<span class=3D"m_1760510505894215229hoenzb"><a href=3D"mailto:mpls@ietf.org=
" target=3D"_blank">mpls@ietf.org</a></span><br>
<span class=3D"m_1760510505894215229hoenzb"><a href=3D"https://www.ietf.org=
/mailman/listinfo/mpls" target=3D"_blank">https://www.ietf.org/mailman/<wbr=
>listinfo/mpls</a></span></span><u></u><u></u></p>
</blockquote>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div></div></div>
</div>

</blockquote></div><br></div>

--000000000000daf417056b3db128--


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Thread-Topic: [spring]  Request WG adoption for draft-xuclad-spring-sr-service-chaining-01
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Subject: Re: [spring] Request WG adoption for draft-xuclad-spring-sr-service-chaining-01
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From nobody Fri May  4 01:16:19 2018
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To: bruno.decraene@orange.com, SPRING WG List <spring@ietf.org>, Rob Shakir <robjs@google.com>
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From: Martin Horneffer <maho@nic.dtag.de>
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Date: Fri, 4 May 2018 10:16:00 +0200
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Subject: [spring] status of draft-filsfils-spring-segment-routing-policy-05
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Dear chairs and group,

may I ask about the status of 
draft-filsfils-spring-segment-routing-policy-05?

With the rechartering discussion I got the impression that nobody was 
doubting that this work belongs in the SPRING wg. Would it be ready for 
a wg adoption call now?

Best regards, Martin


Am 03.05.18 um 09:21 schrieb bruno.decraene@orange.com:
>
> Hi Xiaohu,
>
> We’d like to first clarify the content of the new charter.
>
> Best regards,
>
> --Bruno
>
> *From:*spring [mailto:spring-bounces@ietf.org] *On Behalf Of *???(??)
> *Sent:* Thursday, May 03, 2018 6:07 AM
> *To:* ???(??); SPRING WG List
> *Subject:* Re: [spring] Request WG adoption for 
> draft-xuclad-spring-sr-service-chaining-01
>
> Hi SPRING WG co-chairs,
>
> I wonder what the current status of this WG adoption request.
>
> Best regards,
>
> Xiaohu
>
>     ------------------------------------------------------------------
>
>     From:徐小虎(义先) <xiaohu.xxh@alibaba-inc.com
>     <mailto:xiaohu.xxh@alibaba-inc.com>>
>
>     Send Time:2018年4月4日(星期三) 09:45
>
>     To:SPRING WG List <spring@ietf.org <mailto:spring@ietf.org>>
>
>     Cc:sfc@ietf.org <sfc@ietf.org <mailto:sfc@ietf.org>>
>
>     Subject:Request WG adoption for
>     draft-xuclad-spring-sr-service-chaining-01
>
>     Hi SPRING WG co-chairs,
>
>     We authors believe this draft
>     (https://tools.ietf.org/html/draft-xuclad-spring-sr-service-chaining-01)
>     has been stable enough and therefore we would like to request a WG
>     adoption call for it.
>
>     We believe this work belongs to SPRING WG since the concept of
>     service segment has been mentioned in the Segment Routing
>     architecture from day one and the approaches as described in this
>     draft are exactly to leverage the stateless source routing
>     capability of segment routing to achieve a stateless SFC. To some
>     extent, SFC can be looked as a special case of source routing as
>     it requires the selected traffic to traverse an ordered list of
>     service nodes.
>
>     We believe the SFC WG review is still needed after the adoption
>     since we still hope to reuse the NSH for some special purposes
>     (e.g., use it as a metadata container).
>
>     BTW, implementations based on this draft have existed, as noted in
>     section 8 of the draft.
>
>     Best regards,
>
>     Xiaohu (on behalf of coauthors)
>
> _________________________________________________________________________________________________________________________
>
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To: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, =?gb2312?B?0OzQobuiKNLlz8gp?= <xiaohu.xxh@alibaba-inc.com>, SPRING WG List <spring@ietf.org>
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<style type=3D"text/css" style=3D"display:none"><!--P{margin-top:0;margin-b=
ottom:0;} @font-face=0A=
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<body dir=3D"ltr" style=3D"font-size:12pt;color:#000000;background-color:#F=
FFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;">
<p>Hello SPRING chairs,</p>
<p><br>
</p>
<p>When do you think this clarification of the charter might have progresse=
d enough to provide an update on the WG adoption of draft-xuclad-spriong-sr=
-service-chaining ?</p>
<p>Knowing that MPLS WG and SPRING WG chairs have agreed that draft-xuclad-=
spring-sr-service-chaining should remain in SPRING<br>
</p>
<p><br>
</p>
<p>Cheers, </p>
<p><br>
</p>
<p>- Dan B<br>
</p>
<div style=3D"color: rgb(33, 33, 33);">
<hr tabindex=3D"-1" style=3D"display:inline-block; width:98%">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font style=3D"font-size:11pt" color=
=3D"#000000" face=3D"Calibri, sans-serif"><b>From:</b> spring &lt;spring-bo=
unces@ietf.org&gt; on behalf of bruno.decraene@orange.com &lt;bruno.decraen=
e@orange.com&gt;<br>
<b>Sent:</b> Thursday, May 3, 2018 3:21 AM<br>
<b>To:</b> =D0=EC=D0=A1=BB=A2(=D2=E5=CF=C8); SPRING WG List<br>
<b>Subject:</b> Re: [spring] Request WG adoption for draft-xuclad-spring-sr=
-service-chaining-01</font>
<div>&nbsp;</div>
</div>
<div>
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt; font-family:&quot;A=
rial&quot;,&quot;sans-serif&quot;; color:black">Hi
</span><span style=3D"font-size:10.5pt; font-family:&quot;Tahoma&quot;,&quo=
t;sans-serif&quot;; color:black">Xiaohu,</span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black">&nbsp;</span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black" lang=3D"EN-US">We=A1=AFd l=
ike to first clarify the content of the new charter.</span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black" lang=3D"EN-US">&nbsp;</spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black" lang=3D"EN-US">Best regard=
s,</span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black" lang=3D"EN-US">--Bruno</sp=
an></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt; font-family:&quot;A=
rial&quot;,&quot;sans-serif&quot;; color:black" lang=3D"EN-US">&nbsp;</span=
></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt; font-family:&quot;A=
rial&quot;,&quot;sans-serif&quot;; color:black" lang=3D"EN-US">&nbsp;</span=
></p>
<div style=3D"border:none; border-left:solid blue 1.5pt; padding:0cm 0cm 0c=
m 4.0pt">
<div>
<div style=3D"border:none; border-top:solid #B5C4DF 1.0pt; padding:3.0pt 0c=
m 0cm 0cm">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt; font-family:&quo=
t;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-=
size:10.0pt; font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> spring=
 [mailto:spring-bounces@ietf.org]
<b>On Behalf Of </b>???(??)<br>
<b>Sent:</b> Thursday, May 03, 2018 6:07 AM<br>
<b>To:</b> ???(??); SPRING WG List<br>
<b>Subject:</b> Re: [spring] Request WG adoption for draft-xuclad-spring-sr=
-service-chaining-01</span></p>
</div>
</div>
<p class=3D"MsoNormal">&nbsp;</p>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black">Hi SPRING WG co-chairs,</s=
pan></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black">I wonder what the current =
status of this WG adoption request.</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black">Best regards,</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black">Xiaohu</span></p>
</div>
<blockquote style=3D"margin-right:0cm">
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black">--------------------------=
----------------------------------------</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black" lang=3D"EN-US">From:</span=
><span style=3D"font-size:10.5pt; font-family:&quot;MS Gothic&quot;; color:=
black">=D0=EC=D0=A1=BB=A2</span><span style=3D"font-size:10.5pt; font-famil=
y:&quot;Tahoma&quot;,&quot;sans-serif&quot;; color:black" lang=3D"EN-US">(<=
/span><span style=3D"font-size:10.5pt; font-family:MingLiU; color:black">=
=D2=E5=CF=C8</span><span style=3D"font-size:10.5pt; font-family:&quot;Tahom=
a&quot;,&quot;sans-serif&quot;; color:black" lang=3D"EN-US">)
 &lt;</span><span style=3D"font-size:10.5pt; font-family:&quot;Tahoma&quot;=
,&quot;sans-serif&quot;; color:black"><a href=3D"mailto:xiaohu.xxh@alibaba-=
inc.com"><span lang=3D"EN-US">xiaohu.xxh@alibaba-inc.com</span></a></span><=
span style=3D"font-size:10.5pt; font-family:&quot;Tahoma&quot;,&quot;sans-s=
erif&quot;; color:black" lang=3D"EN-US">&gt;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black">Send Time:2018</span><span=
 style=3D"font-size:10.5pt; font-family:&quot;MS Gothic&quot;; color:black"=
>=C4=EA</span><span style=3D"font-size:10.5pt; font-family:&quot;Tahoma&quo=
t;,&quot;sans-serif&quot;; color:black">4</span><span style=3D"font-size:10=
.5pt; font-family:&quot;MS Gothic&quot;; color:black">=D4=C2</span><span st=
yle=3D"font-size:10.5pt; font-family:&quot;Tahoma&quot;,&quot;sans-serif&qu=
ot;; color:black">4</span><span style=3D"font-size:10.5pt; font-family:&quo=
t;MS Gothic&quot;; color:black">=C8=D5</span><span style=3D"font-size:10.5p=
t; font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;; color:black">(</s=
pan><span style=3D"font-size:10.5pt; font-family:&quot;MS Gothic&quot;; col=
or:black">=D0=C7=C6=DA=C8=FD</span><span style=3D"font-size:10.5pt; font-fa=
mily:&quot;Tahoma&quot;,&quot;sans-serif&quot;; color:black">)
 09:45</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black" lang=3D"EN-US">To:SPRING W=
G List &lt;</span><span style=3D"font-size:10.5pt; font-family:&quot;Tahoma=
&quot;,&quot;sans-serif&quot;; color:black"><a href=3D"mailto:spring@ietf.o=
rg"><span lang=3D"EN-US">spring@ietf.org</span></a></span><span style=3D"fo=
nt-size:10.5pt; font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;; colo=
r:black" lang=3D"EN-US">&gt;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black" lang=3D"EN-US">Cc:sfc@ietf=
.org &lt;</span><span style=3D"font-size:10.5pt; font-family:&quot;Tahoma&q=
uot;,&quot;sans-serif&quot;; color:black"><a href=3D"mailto:sfc@ietf.org"><=
span lang=3D"EN-US">sfc@ietf.org</span></a></span><span style=3D"font-size:=
10.5pt; font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;; color:black"=
 lang=3D"EN-US">&gt;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black">Subject:Request WG adoptio=
n for draft-xuclad-spring-sr-service-chaining-01</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:&quot;T=
ahoma&quot;,&quot;sans-serif&quot;; color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:SimSun;=
 color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt; font-family:SimSun;=
 color:black">Hi SPRING WG co-chairs,</span><span style=3D"font-size:10.5pt=
; font-family:SimSun; color:black"></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:SimSun;=
 color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt; font-family:SimSun;=
 color:black">We authors believe this draft (<a href=3D"https://tools.ietf.=
org/html/draft-xuclad-spring-sr-service-chaining-01" target=3D"_blank">http=
s://tools.ietf.org/html/draft-xuclad-spring-sr-service-chaining-01</a>)
 has been stable enough and therefore we would like to&nbsp;request a WG ad=
option call for it.</span><span style=3D"font-size:10.5pt; font-family:SimS=
un; color:black"></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:SimSun;=
 color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt; font-family:SimSun;=
 color:black">We believe this work belongs to SPRING WG since the concept o=
f service segment has been mentioned in the Segment Routing architecture fr=
om day one and the approaches as described
 in this draft are exactly to leverage the stateless source routing capabil=
ity of segment routing to achieve a stateless SFC. To some extent, SFC can =
be looked as a special case of source routing as it requires the selected t=
raffic to traverse an ordered list
 of service nodes.</span><span style=3D"font-size:10.5pt; font-family:SimSu=
n; color:black"></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:SimSun;=
 color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:SimSun;=
 color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt; font-family:SimSun;=
 color:black">We believe the SFC WG review is still needed after the adopti=
on since we still hope to reuse the NSH for some special purposes (e.g., us=
e it as a metadata container).&nbsp;</span><span style=3D"font-size:10.5pt;=
 font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;; color:black"></span=
></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:SimSun;=
 color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt; font-family:SimSun;=
 color:black">BTW,&nbsp;implementations based on this draft have existed, a=
s noted in section 8 of the draft.</span><span style=3D"font-size:10.5pt; f=
ont-family:SimSun; color:black"></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:SimSun;=
 color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt; font-family:SimSun;=
 color:black">Best regards,</span><span style=3D"font-size:10.5pt; font-fam=
ily:SimSun; color:black"></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt; font-family:SimSun;=
 color:black">Xiaohu (on behalf of coauthors)</span><span style=3D"font-siz=
e:10.5pt; font-family:SimSun; color:black"></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:SimSun;=
 color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:SimSun;=
 color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:SimSun;=
 color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:SimSun;=
 color:black">&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt; font-family:SimSun;=
 color:black">&nbsp;</span></p>
</div>
</blockquote>
</div>
</div>
</div>
</div>
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CC: =?gb2312?B?0OzQobuiKNLlz8gp?= <xiaohu.xxh@alibaba-inc.com>, SPRING WG List <spring@ietf.org>, "Martin Vigoureux (martin.vigoureux@nokia.com)" <martin.vigoureux@nokia.com>
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<body bgcolor=3D"white" lang=3D"FR" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">[&#43;Martin]<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Hello Daniel,<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Chairs have in=
itiated the discussion of a proposed charter with our AD. At this stage, I =
think that Martin would be in the best position to answer
 your question. However, the process may involve multiple persons and be it=
erative so my guess is that proposing an ETA is difficult.<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">That being sai=
d, charter update and WG adoption should not be seen as delaying the work.<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Authors are en=
couraged to keep working on the document and engage the discussion with the=
 WG.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Cheers,<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">--Bruno<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</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 #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;"> Bernier, Daniel [mailto:daniel.bernier@bell.ca]
<br>
<b>Sent:</b> Friday, May 04, 2018 2:15 PM<br>
<b>To:</b> DECRAENE Bruno IMT/OLN; ???(??); SPRING WG List<br>
<b>Subject:</b> Re: [spring] Request WG adoption for draft-xuclad-spring-sr=
-service-chaining-01<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><span style=3D"font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;co=
lor:black">Hello SPRING chairs,<o:p></o:p></span></p>
<p><span style=3D"font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;co=
lor:black"><o:p>&nbsp;</o:p></span></p>
<p><span style=3D"font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;co=
lor:black">When do you think this clarification of the charter might have p=
rogressed enough to provide an update on the WG adoption of draft-xuclad-sp=
riong-sr-service-chaining ?<o:p></o:p></span></p>
<p><span style=3D"font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;co=
lor:black">Knowing that MPLS WG and SPRING WG chairs have agreed that draft=
-xuclad-spring-sr-service-chaining should remain in SPRING<o:p></o:p></span=
></p>
<p><span style=3D"font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;co=
lor:black"><o:p>&nbsp;</o:p></span></p>
<p><span style=3D"font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;co=
lor:black">Cheers, <o:p></o:p></span></p>
<p><span style=3D"font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;co=
lor:black"><o:p>&nbsp;</o:p></span></p>
<p><span style=3D"font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;co=
lor:black">- Dan B<o:p></o:p></span></p>
<div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center"><span=
 style=3D"font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#212=
121">
<hr size=3D"2" width=3D"98%" align=3D"center">
</span></div>
<div id=3D"divRplyFwdMsg">
<p class=3D"MsoNormal"><b><span style=3D"font-size:11.0pt;font-family:&quot=
;Calibri&quot;,&quot;sans-serif&quot;;color:black">From:</span></b><span st=
yle=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&qu=
ot;;color:black"> spring &lt;<a href=3D"mailto:spring-bounces@ietf.org">spr=
ing-bounces@ietf.org</a>&gt;
 on behalf of <a href=3D"mailto:bruno.decraene@orange.com">bruno.decraene@o=
range.com</a> &lt;<a href=3D"mailto:bruno.decraene@orange.com">bruno.decrae=
ne@orange.com</a>&gt;<br>
<b>Sent:</b> Thursday, May 3, 2018 3:21 AM<br>
<b>To:</b> </span><span lang=3D"ZH-CN" style=3D"font-size:11.0pt;font-famil=
y:SimSun;color:black">=D0=EC=D0=A1=BB=A2</span><span style=3D"font-size:11.=
0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:black">(</=
span><span lang=3D"ZH-CN" style=3D"font-size:11.0pt;font-family:SimSun;colo=
r:black">=D2=E5=CF=C8</span><span style=3D"font-size:11.0pt;font-family:&qu=
ot;Calibri&quot;,&quot;sans-serif&quot;;color:black">);
 SPRING WG List<br>
<b>Subject:</b> Re: [spring] Request WG adoption for draft-xuclad-spring-sr=
-service-chaining-01</span><span style=3D"font-family:&quot;Calibri&quot;,&=
quot;sans-serif&quot;;color:#212121">
<o:p></o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,&quot=
;sans-serif&quot;;color:#212121">&nbsp;<o:p></o:p></span></p>
</div>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;;color:black">Hi
</span><span style=3D"font-size:10.5pt;font-family:&quot;Tahoma&quot;,&quot=
;sans-serif&quot;;color:black">Xiaohu,</span><span style=3D"color:#212121">=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,&quot;sans-serif&quot;;color:black">&nbsp;</span><span style=3D"=
color:#212121"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;color:black">We=A1=AFd lik=
e to first clarify the content of the new charter.</span><span style=3D"col=
or:#212121"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;color:black">&nbsp;</span>=
<span style=3D"color:#212121"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;color:black">Best regards,=
</span><span style=3D"color:#212121"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;color:black">--Bruno</span=
><span style=3D"color:#212121"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;</span><=
span style=3D"color:#212121"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;</span><=
span style=3D"color:#212121"><o:p></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 #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;;color:#212121">From:</span></b><span s=
tyle=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&qu=
ot;;color:#212121"> spring [<a href=3D"mailto:spring-bounces@ietf.org">mail=
to:spring-bounces@ietf.org</a>]
<b>On Behalf Of </b>???(??)<br>
<b>Sent:</b> Thursday, May 03, 2018 6:07 AM<br>
<b>To:</b> ???(??); SPRING WG List<br>
<b>Subject:</b> Re: [spring] Request WG adoption for draft-xuclad-spring-sr=
-service-chaining-01</span><span style=3D"color:#212121"><o:p></o:p></span>=
</p>
</div>
</div>
<p class=3D"MsoNormal"><span style=3D"color:#212121">&nbsp;<o:p></o:p></spa=
n></p>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,&quot;sans-serif&quot;;color:black">&nbsp;</span><span style=3D"=
color:#212121"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,&quot;sans-serif&quot;;color:black">Hi SPRING WG co-chairs,</spa=
n><span style=3D"color:#212121"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,&quot;sans-serif&quot;;color:black">&nbsp;</span><span style=3D"=
color:#212121"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,&quot;sans-serif&quot;;color:black">I wonder what the current st=
atus of this WG adoption request.</span><span style=3D"color:#212121"><o:p>=
</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,&quot;sans-serif&quot;;color:black">&nbsp;</span><span style=3D"=
color:#212121"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,&quot;sans-serif&quot;;color:black">Best regards,</span><span st=
yle=3D"color:#212121"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,&quot;sans-serif&quot;;color:black">Xiaohu</span><span style=3D"=
color:#212121"><o:p></o:p></span></p>
</div>
<blockquote style=3D"margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt">
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,&quot;sans-serif&quot;;color:black">----------------------------=
--------------------------------------</span><span style=3D"color:#212121">=
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;color:black">From:</span><=
span lang=3D"ZH-CN" style=3D"font-size:10.5pt;font-family:&quot;MS Gothic&q=
uot;;color:black">=D0=EC=D0=A1=BB=A2</span><span lang=3D"EN-US" style=3D"fo=
nt-size:10.5pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;color:=
black">(</span><span lang=3D"ZH-CN" style=3D"font-size:10.5pt;font-family:M=
ingLiU;color:black">=D2=E5=CF=C8</span><span lang=3D"EN-US" style=3D"font-s=
ize:10.5pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;color:blac=
k">)
 &lt;</span><span style=3D"font-size:10.5pt;font-family:&quot;Tahoma&quot;,=
&quot;sans-serif&quot;;color:black"><a href=3D"mailto:xiaohu.xxh@alibaba-in=
c.com"><span lang=3D"EN-US">xiaohu.xxh@alibaba-inc.com</span></a></span><sp=
an lang=3D"EN-US" style=3D"font-size:10.5pt;font-family:&quot;Tahoma&quot;,=
&quot;sans-serif&quot;;color:black">&gt;</span><span style=3D"color:#212121=
"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,&quot;sans-serif&quot;;color:black">Send Time:2018</span><span l=
ang=3D"ZH-CN" style=3D"font-size:10.5pt;font-family:&quot;MS Gothic&quot;;c=
olor:black">=C4=EA</span><span style=3D"font-size:10.5pt;font-family:&quot;=
Tahoma&quot;,&quot;sans-serif&quot;;color:black">4</span><span lang=3D"ZH-C=
N" style=3D"font-size:10.5pt;font-family:&quot;MS Gothic&quot;;color:black"=
>=D4=C2</span><span style=3D"font-size:10.5pt;font-family:&quot;Tahoma&quot=
;,&quot;sans-serif&quot;;color:black">4</span><span lang=3D"ZH-CN" style=3D=
"font-size:10.5pt;font-family:&quot;MS Gothic&quot;;color:black">=C8=D5</sp=
an><span style=3D"font-size:10.5pt;font-family:&quot;Tahoma&quot;,&quot;san=
s-serif&quot;;color:black">(</span><span lang=3D"ZH-CN" style=3D"font-size:=
10.5pt;font-family:&quot;MS Gothic&quot;;color:black">=D0=C7=C6=DA=C8=FD</s=
pan><span style=3D"font-size:10.5pt;font-family:&quot;Tahoma&quot;,&quot;sa=
ns-serif&quot;;color:black">)
 09:45</span><span style=3D"color:#212121"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;color:black">To:SPRING WG =
List &lt;</span><span style=3D"font-size:10.5pt;font-family:&quot;Tahoma&qu=
ot;,&quot;sans-serif&quot;;color:black"><a href=3D"mailto:spring@ietf.org">=
<span lang=3D"EN-US">spring@ietf.org</span></a></span><span lang=3D"EN-US" =
style=3D"font-size:10.5pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&q=
uot;;color:black">&gt;</span><span style=3D"color:#212121"><o:p></o:p></spa=
n></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;color:black">Cc:sfc@ietf.o=
rg &lt;</span><span style=3D"font-size:10.5pt;font-family:&quot;Tahoma&quot=
;,&quot;sans-serif&quot;;color:black"><a href=3D"mailto:sfc@ietf.org"><span=
 lang=3D"EN-US">sfc@ietf.org</span></a></span><span lang=3D"EN-US" style=3D=
"font-size:10.5pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;col=
or:black">&gt;</span><span style=3D"color:#212121"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,&quot;sans-serif&quot;;color:black">Subject:Request WG adoption =
for draft-xuclad-spring-sr-service-chaining-01</span><span style=3D"color:#=
212121"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Ta=
homa&quot;,&quot;sans-serif&quot;;color:black">&nbsp;</span><span style=3D"=
color:#212121"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:SimSun;c=
olor:black">&nbsp;</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt;font-family:SimSun;c=
olor:black">Hi SPRING WG co-chairs,</span><span style=3D"color:#212121"><o:=
p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:SimSun;c=
olor:black">&nbsp;</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt;font-family:SimSun;c=
olor:black">We authors believe this draft (<a href=3D"https://tools.ietf.or=
g/html/draft-xuclad-spring-sr-service-chaining-01" target=3D"_blank">https:=
//tools.ietf.org/html/draft-xuclad-spring-sr-service-chaining-01</a>)
 has been stable enough and therefore we would like to&nbsp;request a WG ad=
option call for it.</span><span style=3D"color:#212121"><o:p></o:p></span><=
/p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:SimSun;c=
olor:black">&nbsp;</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt;font-family:SimSun;c=
olor:black">We believe this work belongs to SPRING WG since the concept of =
service segment has been mentioned in the Segment Routing architecture from=
 day one and the approaches as described
 in this draft are exactly to leverage the stateless source routing capabil=
ity of segment routing to achieve a stateless SFC. To some extent, SFC can =
be looked as a special case of source routing as it requires the selected t=
raffic to traverse an ordered list
 of service nodes.</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:SimSun;c=
olor:black">&nbsp;</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:SimSun;c=
olor:black">&nbsp;</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt;font-family:SimSun;c=
olor:black">We believe the SFC WG review is still needed after the adoption=
 since we still hope to reuse the NSH for some special purposes (e.g., use =
it as a metadata container).&nbsp;</span><span style=3D"color:#212121"><o:p=
></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:SimSun;c=
olor:black">&nbsp;</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt;font-family:SimSun;c=
olor:black">BTW,&nbsp;implementations based on this draft have existed, as =
noted in section 8 of the draft.</span><span style=3D"color:#212121"><o:p><=
/o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:SimSun;c=
olor:black">&nbsp;</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt;font-family:SimSun;c=
olor:black">Best regards,</span><span style=3D"color:#212121"><o:p></o:p></=
span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:15.0pt;font-family:SimSun;c=
olor:black">Xiaohu (on behalf of coauthors)</span><span style=3D"color:#212=
121"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:SimSun;c=
olor:black">&nbsp;</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:SimSun;c=
olor:black">&nbsp;</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:SimSun;c=
olor:black">&nbsp;</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:SimSun;c=
olor:black">&nbsp;</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:SimSun;c=
olor:black">&nbsp;</span><span style=3D"color:#212121"><o:p></o:p></span></=
p>
</div>
</blockquote>
</div>
</div>
</div>
</div>
<pre><span style=3D"color:#212121">________________________________________=
___________________________________________________________________________=
______<o:p></o:p></span></pre>
<pre><span style=3D"color:#212121"><o:p>&nbsp;</o:p></span></pre>
<pre><span style=3D"color:#212121">Ce message et ses pieces jointes peuvent=
 contenir des informations confidentielles ou privilegiees et ne doivent do=
nc<o:p></o:p></span></pre>
<pre><span style=3D"color:#212121">pas etre diffuses, exploites ou copies s=
ans autorisation. Si vous avez recu ce message par erreur, veuillez le sign=
aler<o:p></o:p></span></pre>
<pre><span style=3D"color:#212121">a l'expediteur et le detruire ainsi que =
les pieces jointes. Les messages electroniques etant susceptibles d'alterat=
ion,<o:p></o:p></span></pre>
<pre><span style=3D"color:#212121">Orange decline toute responsabilite si c=
e message a ete altere, deforme ou falsifie. Merci.<o:p></o:p></span></pre>
<pre><span style=3D"color:#212121"><o:p>&nbsp;</o:p></span></pre>
<pre><span style=3D"color:#212121">This message and its attachments may con=
tain confidential or privileged information that may be protected by law;<o=
:p></o:p></span></pre>
<pre><span style=3D"color:#212121">they should not be distributed, used or =
copied without authorisation.<o:p></o:p></span></pre>
<pre><span style=3D"color:#212121">If you have received this email in error=
, please notify the sender and delete this message and its attachments.<o:p=
></o:p></span></pre>
<pre><span style=3D"color:#212121">As emails may be altered, Orange is not =
liable for messages that have been modified, changed or falsified.<o:p></o:=
p></span></pre>
<pre><span style=3D"color:#212121">Thank you.<o:p></o:p></span></pre>
</div>
</div>
</div>
</div>
<PRE>______________________________________________________________________=
___________________________________________________

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'expediteur et le detruire ainsi que les pieces jointes. Les messages el=
ectroniques 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 inf=
ormation 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 dele=
te 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.
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From: Rob Shakir <robjs@google.com>
Date: Fri, 04 May 2018 15:09:40 +0000
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Subject: Re: [spring] status of draft-filsfils-spring-segment-routing-policy-05
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I'd echo Bruno's comments here, WG adoption should not delay this work.

I would very much like to see some discussion amongst the working group of
how we can scope the documents that are produced relating to SR-TE policy.
It's an area with much interest, and (from the document) a number of
different facets. Today, we have a 50 page RFC that touches on traffic
steering, path calculation, counters/measurement, and use cases -- a
discussion as to whether we need to have this all in one document, or
whether there is a set of complimentary documents that the WG can develop
which make this work more addressable (and prioritises core elements to
reach stability) would be very welcome.

It's also clear that with the number of contributors, this document has
evolved over time -- some editorial work to unify the definitions of
identification (e.g., there are multiple sections that discuss what can
identify a policy - one simply saying a BSID cannot), and validity might be
useful to improve readability and simplify reviews as we move this document
into the WG.

These are not concrete requests that must happen, but this document doesn't
need to be WG adopted to discuss items such as this.

Cheers,
r.

On Fri, May 4, 2018 at 5:39 AM <bruno.decraene@orange.com> wrote:

> Dear Martin,
>
> Chairs have discussed this document and we are progressing toward WG
> adoption call, pending two points which are underway.
> That being said, I'm listed as a co-author of this document, so Rob has
> the lead on this one.
>
> Again, charter update and WG adoption should not be seen as delaying the
> work.
> Authors are encouraged to keep working on the document and engage the
> discussion with the WG.
>
> Best regards,
> --Bruno
>
>  > -----Original Message-----
>  > From: Martin Horneffer [mailto:maho@nic.dtag.de]
>  > Sent: Friday, May 04, 2018 10:16 AM
>  > To: DECRAENE Bruno IMT/OLN; SPRING WG List; Rob Shakir
>  > Subject: status of draft-filsfils-spring-segment-routing-policy-05
>  >
>  > Dear chairs and group,
>  >
>  > may I ask about the status of
>  > draft-filsfils-spring-segment-routing-policy-05?
>  >
>  > With the rechartering discussion I got the impression that nobody was
>  > doubting that this work belongs in the SPRING wg. Would it be ready fo=
r
>  > a wg adoption call now?
>  >
>  > Best regards, Martin
>  >
>  >
>  > Am 03.05.18 um 09:21 schrieb bruno.decraene@orange.com:
>  > >
>  > > Hi Xiaohu,
>  > >
>  > > We=E2=80=99d like to first clarify the content of the new charter.
>  > >
>  > > Best regards,
>  > >
>  > > --Bruno
>  > >
>  > > *From:*spring [mailto:spring-bounces@ietf.org] *On Behalf Of *???(??=
)
>  > > *Sent:* Thursday, May 03, 2018 6:07 AM
>  > > *To:* ???(??); SPRING WG List
>  > > *Subject:* Re: [spring] Request WG adoption for
>  > > draft-xuclad-spring-sr-service-chaining-01
>  > >
>  > > Hi SPRING WG co-chairs,
>  > >
>  > > I wonder what the current status of this WG adoption request.
>  > >
>  > > Best regards,
>  > >
>  > > Xiaohu
>  > >
>  > >     ----------------------------------------------------------------=
--
>  > >
>  > >     From:=E5=BE=90=E5=B0=8F=E8=99=8E(=E4=B9=89=E5=85=88) <xiaohu.xxh=
@alibaba-inc.com
>  > >     <mailto:xiaohu.xxh@alibaba-inc.com>>
>  > >
>  > >     Send Time:2018=E5=B9=B44=E6=9C=884=E6=97=A5(=E6=98=9F=E6=9C=9F=
=E4=B8=89) 09:45
>  > >
>  > >     To:SPRING WG List <spring@ietf.org <mailto:spring@ietf.org>>
>  > >
>  > >     Cc:sfc@ietf.org <sfc@ietf.org <mailto:sfc@ietf.org>>
>  > >
>  > >     Subject:Request WG adoption for
>  > >     draft-xuclad-spring-sr-service-chaining-01
>  > >
>  > >     Hi SPRING WG co-chairs,
>  > >
>  > >     We authors believe this draft
>  > >     (
> https://tools.ietf.org/html/draft-xuclad-spring-sr-service-chaining-01)
>  > >     has been stable enough and therefore we would like to request a =
WG
>  > >     adoption call for it.
>  > >
>  > >     We believe this work belongs to SPRING WG since the concept of
>  > >     service segment has been mentioned in the Segment Routing
>  > >     architecture from day one and the approaches as described in thi=
s
>  > >     draft are exactly to leverage the stateless source routing
>  > >     capability of segment routing to achieve a stateless SFC. To som=
e
>  > >     extent, SFC can be looked as a special case of source routing as
>  > >     it requires the selected traffic to traverse an ordered list of
>  > >     service nodes.
>  > >
>  > >     We believe the SFC WG review is still needed after the adoption
>  > >     since we still hope to reuse the NSH for some special purposes
>  > >     (e.g., use it as a metadata container).
>  > >
>  > >     BTW, implementations based on this draft have existed, as noted =
in
>  > >     section 8 of the draft.
>  > >
>  > >     Best regards,
>  > >
>  > >     Xiaohu (on behalf of coauthors)
>  > >
>  > >
>  >
> _________________________________________________________________________=
_______
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Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">I&#39;d echo Bruno&#39;s comments here, WG adoption should=
 not delay this work.=C2=A0<div><br></div><div>I would very much like to se=
e some discussion amongst the working group of how we can scope the documen=
ts that are produced relating to SR-TE policy. It&#39;s an area with much i=
nterest, and (from the document) a number of different facets. Today, we ha=
ve a 50 page RFC that touches on traffic steering, path calculation, counte=
rs/measurement, and use cases -- a discussion as to whether we need to have=
 this all in one document, or whether there is a set of complimentary docum=
ents that the WG can develop which make this work more addressable (and pri=
oritises core elements to reach stability) would be very welcome.</div><div=
><br></div><div>It&#39;s also clear that with the number of contributors, t=
his document has evolved over time -- some editorial work to unify the defi=
nitions of identification (e.g., there are multiple sections that discuss w=
hat can identify a policy - one simply saying a BSID cannot), and validity =
might be useful to improve readability and simplify reviews as we move this=
 document into the WG.</div><div><br></div><div>These are not concrete requ=
ests that must happen, but this document doesn&#39;t need to be WG adopted =
to discuss items such as this.</div><div><br></div><div>Cheers,</div><div>r=
.</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Fri, May 4,=
 2018 at 5:39 AM &lt;<a href=3D"mailto:bruno.decraene@orange.com">bruno.dec=
raene@orange.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">Dea=
r Martin,<br>
<br>
Chairs have discussed this document and we are progressing toward WG adopti=
on call, pending two points which are underway.<br>
That being said, I&#39;m listed as a co-author of this document, so Rob has=
 the lead on this one.<br>
<br>
Again, charter update and WG adoption should not be seen as delaying the wo=
rk.<br>
Authors are encouraged to keep working on the document and engage the discu=
ssion with the WG.<br>
<br>
Best regards,<br>
--Bruno<br>
<br>
=C2=A0&gt; -----Original Message-----<br>
=C2=A0&gt; From: Martin Horneffer [mailto:<a href=3D"mailto:maho@nic.dtag.d=
e" target=3D"_blank">maho@nic.dtag.de</a>]<br>
=C2=A0&gt; Sent: Friday, May 04, 2018 10:16 AM<br>
=C2=A0&gt; To: DECRAENE Bruno IMT/OLN; SPRING WG List; Rob Shakir<br>
=C2=A0&gt; Subject: status of draft-filsfils-spring-segment-routing-policy-=
05<br>
=C2=A0&gt; <br>
=C2=A0&gt; Dear chairs and group,<br>
=C2=A0&gt; <br>
=C2=A0&gt; may I ask about the status of<br>
=C2=A0&gt; draft-filsfils-spring-segment-routing-policy-05?<br>
=C2=A0&gt; <br>
=C2=A0&gt; With the rechartering discussion I got the impression that nobod=
y was<br>
=C2=A0&gt; doubting that this work belongs in the SPRING wg. Would it be re=
ady for<br>
=C2=A0&gt; a wg adoption call now?<br>
=C2=A0&gt; <br>
=C2=A0&gt; Best regards, Martin<br>
=C2=A0&gt; <br>
=C2=A0&gt; <br>
=C2=A0&gt; Am 03.05.18 um 09:21 schrieb <a href=3D"mailto:bruno.decraene@or=
ange.com" target=3D"_blank">bruno.decraene@orange.com</a>:<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt; Hi Xiaohu,<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt; We=E2=80=99d like to first clarify the content of the new c=
harter.<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt; Best regards,<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt; --Bruno<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt; *From:*spring [mailto:<a href=3D"mailto:spring-bounces@ietf=
.org" target=3D"_blank">spring-bounces@ietf.org</a>] *On Behalf Of *???(??)=
<br>
=C2=A0&gt; &gt; *Sent:* Thursday, May 03, 2018 6:07 AM<br>
=C2=A0&gt; &gt; *To:* ???(??); SPRING WG List<br>
=C2=A0&gt; &gt; *Subject:* Re: [spring] Request WG adoption for<br>
=C2=A0&gt; &gt; draft-xuclad-spring-sr-service-chaining-01<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt; Hi SPRING WG co-chairs,<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt; I wonder what the current status of this WG adoption reques=
t.<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt; Best regards,<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt; Xiaohu<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0----------------------------------------=
--------------------------<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0From:=E5=BE=90=E5=B0=8F=E8=99=8E(=E4=B9=
=89=E5=85=88) &lt;<a href=3D"mailto:xiaohu.xxh@alibaba-inc.com" target=3D"_=
blank">xiaohu.xxh@alibaba-inc.com</a><br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0&lt;mailto:<a href=3D"mailto:xiaohu.xxh@=
alibaba-inc.com" target=3D"_blank">xiaohu.xxh@alibaba-inc.com</a>&gt;&gt;<b=
r>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0Send Time:2018=E5=B9=B44=E6=9C=884=E6=97=
=A5(=E6=98=9F=E6=9C=9F=E4=B8=89) 09:45<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0To:SPRING WG List &lt;<a href=3D"mailto:=
spring@ietf.org" target=3D"_blank">spring@ietf.org</a> &lt;mailto:<a href=
=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a>&gt;&gt;<b=
r>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0<a href=3D"mailto:Cc%3Asfc@ietf.org" tar=
get=3D"_blank">Cc:sfc@ietf.org</a> &lt;<a href=3D"mailto:sfc@ietf.org" targ=
et=3D"_blank">sfc@ietf.org</a> &lt;mailto:<a href=3D"mailto:sfc@ietf.org" t=
arget=3D"_blank">sfc@ietf.org</a>&gt;&gt;<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0Subject:Request WG adoption for<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0draft-xuclad-spring-sr-service-chaining-=
01<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0Hi SPRING WG co-chairs,<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0We authors believe this draft<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0(<a href=3D"https://tools.ietf.org/html/=
draft-xuclad-spring-sr-service-chaining-01" rel=3D"noreferrer" target=3D"_b=
lank">https://tools.ietf.org/html/draft-xuclad-spring-sr-service-chaining-0=
1</a>)<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0has been stable enough and therefore we =
would like to=C2=A0request a WG<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0adoption call for it.<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0We believe this work belongs to SPRING W=
G since the concept of<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0service segment has been mentioned in th=
e Segment Routing<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0architecture from day one and the approa=
ches as described in this<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0draft are exactly to leverage the statel=
ess source routing<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0capability of segment routing to achieve=
 a stateless SFC. To some<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0extent, SFC can be looked as a special c=
ase of source routing as<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0it requires the selected traffic to trav=
erse an ordered list of<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0service nodes.<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0We believe the SFC WG review is still ne=
eded after the adoption<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0since we still hope to reuse the NSH for=
 some special purposes<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0(e.g., use it as a metadata container).<=
br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0BTW,=C2=A0implementations based on this =
draft have existed, as noted in<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0section 8 of the draft.<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0Best regards,<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;=C2=A0 =C2=A0 =C2=A0Xiaohu (on behalf of coauthors)<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; ________________________________________________________________=
________________<br>
=C2=A0&gt; _________________________________________<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt; Ce message et ses pieces jointes peuvent contenir des infor=
mations confidentielles ou<br>
=C2=A0&gt; privilegiees et ne doivent donc<br>
=C2=A0&gt; &gt; pas etre diffuses, exploites ou copies sans autorisation. S=
i vous avez recu ce message par<br>
=C2=A0&gt; erreur, veuillez le signaler<br>
=C2=A0&gt; &gt; a l&#39;expediteur et le detruire ainsi que les pieces join=
tes. Les messages electroniques etant<br>
=C2=A0&gt; susceptibles d&#39;alteration,<br>
=C2=A0&gt; &gt; Orange decline toute responsabilite si ce message a ete alt=
ere, deforme ou falsifie. Merci.<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt; This message and its attachments may contain confidential o=
r privileged information that may be<br>
=C2=A0&gt; protected by law;<br>
=C2=A0&gt; &gt; they should not be distributed, used or copied without auth=
orisation.<br>
=C2=A0&gt; &gt; If you have received this email in error, please notify the=
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=C2=A0&gt; attachments.<br>
=C2=A0&gt; &gt; As emails may be altered, Orange is not liable for messages=
 that have been modified, changed<br>
=C2=A0&gt; or falsified.<br>
=C2=A0&gt; &gt; Thank you.<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt;<br>
=C2=A0&gt; &gt; _______________________________________________<br>
=C2=A0&gt; &gt; spring mailing list<br>
=C2=A0&gt; &gt; <a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring=
@ietf.org</a><br>
=C2=A0&gt; &gt; <a href=3D"https://www.ietf.org/mailman/listinfo/spring" re=
l=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/listinfo/sp=
ring</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>
</blockquote></div>

--0000000000003321ae056b62b687--


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From: "Chengli (IP Technology Research)" <chengli13@huawei.com>
To: "spring@ietf.org" <spring@ietf.org>, "spring-chairs@ietf.org" <spring-chairs@ietf.org>
Thread-Topic: May I ask about the status of the new SPRING charter?
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Hi all,



After reading some threads that talk about the new charter, I would like to=
 know the status of rechartering.



Thanks!

Cheng Li


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<p style=3D"margin:0cm;margin-bottom:.0001pt"><span style=3D"font-size:10.5=
pt;font-family:&quot;Calibri&quot;,sans-serif;color:black">Hi all,<o:p></o:=
p></span></p>
<p style=3D"margin:0cm;margin-bottom:.0001pt"><span style=3D"font-size:10.5=
pt;font-family:&quot;Calibri&quot;,sans-serif;color:black">&nbsp;<o:p></o:p=
></span></p>
<p style=3D"margin:0cm;margin-bottom:.0001pt"><span style=3D"font-size:10.5=
pt;font-family:&quot;Calibri&quot;,sans-serif;color:black">After reading so=
me threads that talk about the new charter, I would like to know the status=
 of rechartering.
<o:p></o:p></span></p>
<p style=3D"margin:0cm;margin-bottom:.0001pt"><span style=3D"font-size:10.5=
pt;font-family:&quot;Calibri&quot;,sans-serif;color:black">&nbsp;<o:p></o:p=
></span></p>
<p style=3D"margin:0cm;margin-bottom:.0001pt"><span style=3D"font-size:10.5=
pt;font-family:&quot;Calibri&quot;,sans-serif;color:black">Thanks!<o:p></o:=
p></span></p>
<p style=3D"margin:0cm;margin-bottom:.0001pt"><span style=3D"font-size:10.5=
pt;font-family:&quot;Calibri&quot;,sans-serif;color:black">Cheng Li<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/faPX9xkB64JMJJbpMCCXSyyTvPg>
Subject: Re: [spring] May I ask about the status of the new SPRING charter?
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Hello,

the chairs have recently shared with me some text which I'm look at 
right now. So this is progressing.

-m

Le 2018-05-07  9:12, Chengli (IP Technology Research) a crit:
> Hi all,
> 
> After reading some threads that talk about the new charter, I would like 
> to know the status of rechartering.
> 
> Thanks!
> 
> Cheng Li
> 
> 
> 
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
> 


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Subject: [spring] WG adoption of draft-filsfils-spring-segment-routing-policy?
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Hello SPRING WG chairs -

Would this be a good time to consider WG adoption of draft-filsfils-spring-=
segment-routing-policy? It is part of the WG charter and is likely mature e=
nough at this point.

        pdm


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<p class=3D"MsoNormal">Hello SPRING WG chairs &#8211;<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Would this be a good time to consider WG adoption of=
 draft-filsfils-spring-segment-routing-policy? It is part of the WG charter=
 and is likely mature enough at this point.<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; <i>pdm</i=
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From: Rob Shakir <robjs@google.com>
Date: Mon, 07 May 2018 19:06:24 +0000
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To: Paul Mattes <pamattes@microsoft.com>
Cc: "bruno.decraene@orange.com" <bruno.decraene@orange.com>,  "spring-chairs@ietf.org" <spring-chairs@ietf.org>, "spring@ietf.org" <spring@ietf.org>
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Subject: Re: [spring] WG adoption of draft-filsfils-spring-segment-routing-policy?
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Folks,

We've had this question a few times on the list. As Bruno wrote here
<https://www.ietf.org/mail-archive/web/spring/current/msg03540.html>, we're
moving towards WG adoption - based on discussions with Martin, and other
WGs. In parallel, we're working with the IESG to update the charter.

I'll repeat myself: I don't consider WG adoption blocking for discussions
and clarifications in this document. I have a number of suggestions for
this (see here
<https://www.ietf.org/mail-archive/web/spring/current/msg03541.html>), it'd
be great to see discussion on the mailing list of this (I haven't seen a
response to this from the authors, or editors). Based on our discussions
with other WGs, there are some further suggestions that will be sent as
part of the WG adoption call.

If there's a specific reason that we need to do this *immediately* - please
do share it. I've had private discussions with the editors, and did not yet
understand why this WG adoption call is blocking this work.

Thank you,
r.

On Mon, May 7, 2018 at 11:58 AM Paul Mattes <pamattes@microsoft.com> wrote:

> Hello SPRING WG chairs =E2=80=93
>
>
>
> Would this be a good time to consider WG adoption of
> draft-filsfils-spring-segment-routing-policy? It is part of the WG charte=
r
> and is likely mature enough at this point.
>
>
>
>         *pdm*
>
>
>

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<div dir=3D"ltr">Folks,<div><br></div><div>We&#39;ve had this question a fe=
w times on the list. As Bruno wrote <a href=3D"https://www.ietf.org/mail-ar=
chive/web/spring/current/msg03540.html">here</a>, we&#39;re moving towards =
WG adoption - based on discussions with Martin, and other WGs. In parallel,=
 we&#39;re working with the IESG to update the charter.=C2=A0</div><div><br=
></div><div>I&#39;ll repeat myself: I don&#39;t consider WG adoption blocki=
ng for discussions and clarifications in this document. I have a number of =
suggestions for this (see <a href=3D"https://www.ietf.org/mail-archive/web/=
spring/current/msg03541.html">here</a>), it&#39;d be great to see discussio=
n on the mailing list of this (I haven&#39;t seen a response to this from t=
he authors, or editors). Based on our discussions with other WGs, there are=
 some further suggestions that will be sent as part of the WG adoption call=
.</div><div><br></div><div>If there&#39;s a specific reason that we need to=
 do this <i>immediately</i>=C2=A0- please do share it. I&#39;ve had private=
 discussions with the editors, and did not yet understand why this WG adopt=
ion call is blocking this work.</div><div><br></div><div>Thank you,</div><d=
iv>r.</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Mon, Ma=
y 7, 2018 at 11:58 AM Paul Mattes &lt;<a href=3D"mailto:pamattes@microsoft.=
com">pamattes@microsoft.com</a>&gt; wrote:<br></div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-le=
ft:1ex">





<div lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72">
<div class=3D"m_4992529444651756347WordSection1">
<p class=3D"MsoNormal">Hello SPRING WG chairs =E2=80=93<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Would this be a good time to consider WG adoption of=
 draft-filsfils-spring-segment-routing-policy? It is part of the WG charter=
 and is likely mature enough at this point.<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 <i>pdm</i=
><u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>

</blockquote></div>

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To: Rob Shakir <robjs@google.com>
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Subject: Re: [spring] WG adoption of draft-filsfils-spring-segment-routing-policy?
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From: Rob Shakir <robjs@google.com>
Date: Tue, 08 May 2018 03:58:19 +0000
Message-ID: <CAHd-QWvt2jBoA_bAU=ZhvRcaUwBEV_TXHTAB3gHV2_6q2baUVQ@mail.gmail.com>
To: "Zafar Ali (zali)" <zali@cisco.com>
Cc: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "spring@ietf.org" <spring@ietf.org>,  "spring-chairs@ietf.org" <spring-chairs@ietf.org>
Content-Type: multipart/alternative; boundary="0000000000009dc2e9056ba9cca2"
Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/YdEGeUsNgUSEDAClm5Tu_TUR2nU>
Subject: Re: [spring] WG adoption of draft-filsfils-spring-segment-routing-policy?
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Thanks Zafar -- that's great to hear.

r.

On Mon, May 7, 2018 at 7:36 PM Zafar Ali (zali) <zali@cisco.com> wrote:

> Hi Rob,
>
>
>
> The authors of the draft are coordinating to address your comments and
> will update the chairs and the WG, accordingly.
>
>
>
> Thanks
>
>
>
> Regards =E2=80=A6 Zafar
>
>
>
> *From: *spring <spring-bounces@ietf.org> on behalf of Rob Shakir <
> robjs@google.com>
> *Date: *Monday, May 7, 2018 at 3:06 PM
> *To: *Paul Mattes <pamattes@microsoft.com>
> *Cc: *"bruno.decraene@orange.com" <bruno.decraene@orange.com>, "
> spring@ietf.org" <spring@ietf.org>, "spring-chairs@ietf.org" <
> spring-chairs@ietf.org>
> *Subject: *Re: [spring] WG adoption of
> draft-filsfils-spring-segment-routing-policy?
>
>
>
> Folks,
>
>
>
> We've had this question a few times on the list. As Bruno wrote here
> <https://www.ietf.org/mail-archive/web/spring/current/msg03540.html>,
> we're moving towards WG adoption - based on discussions with Martin, and
> other WGs. In parallel, we're working with the IESG to update the charter=
.
>
>
>
> I'll repeat myself: I don't consider WG adoption blocking for discussions
> and clarifications in this document. I have a number of suggestions for
> this (see here
> <https://www.ietf.org/mail-archive/web/spring/current/msg03541.html>),
> it'd be great to see discussion on the mailing list of this (I haven't se=
en
> a response to this from the authors, or editors). Based on our discussion=
s
> with other WGs, there are some further suggestions that will be sent as
> part of the WG adoption call..
>
>
>
> If there's a specific reason that we need to do this *immediately* -
> please do share it. I've had private discussions with the editors, and di=
d
> not yet understand why this WG adoption call is blocking this work.
>
>
>
> Thank you,
>
> r.
>
>
>
> On Mon, May 7, 2018 at 11:58 AM Paul Mattes <pamattes@microsoft.com>
> wrote:
>
> Hello SPRING WG chairs =E2=80=93
>
>
>
> Would this be a good time to consider WG adoption of
> draft-filsfils-spring-segment-routing-policy? It is part of the WG charte=
r
> and is likely mature enough at this point.
>
>
>
>         *pdm*
>
>
>
>

--0000000000009dc2e9056ba9cca2
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Thanks Zafar -- that&#39;s great to hear.<div><br></div><d=
iv>r.</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Mon, Ma=
y 7, 2018 at 7:36 PM Zafar Ali (zali) &lt;<a href=3D"mailto:zali@cisco.com"=
>zali@cisco.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" s=
tyle=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_-1232797663600770879WordSection1">
<p class=3D"MsoNormal">Hi Rob, <u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">The authors of the draft are coordinating to address=
 your comments and will update the chairs and the WG, accordingly.
<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:&quot;Ti=
mes New Roman&quot;,serif">Thanks<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:&quot;Ti=
mes New Roman&quot;,serif"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:&quot;Ti=
mes New Roman&quot;,serif">Regards =E2=80=A6 Zafar
<u></u><u></u></span></p>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div style=3D"border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:12.0pt;color:black">From=
: </span></b><span style=3D"font-size:12.0pt;color:black">spring &lt;<a hre=
f=3D"mailto:spring-bounces@ietf.org" target=3D"_blank">spring-bounces@ietf.=
org</a>&gt; on behalf of Rob Shakir &lt;<a href=3D"mailto:robjs@google.com"=
 target=3D"_blank">robjs@google.com</a>&gt;<br>
<b>Date: </b>Monday, May 7, 2018 at 3:06 PM<br>
<b>To: </b>Paul Mattes &lt;<a href=3D"mailto:pamattes@microsoft.com" target=
=3D"_blank">pamattes@microsoft.com</a>&gt;<br>
<b>Cc: </b>&quot;<a href=3D"mailto:bruno.decraene@orange.com" target=3D"_bl=
ank">bruno.decraene@orange.com</a>&quot; &lt;<a href=3D"mailto:bruno.decrae=
ne@orange.com" target=3D"_blank">bruno.decraene@orange.com</a>&gt;, &quot;<=
a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a>&quo=
t; &lt;<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org=
</a>&gt;, &quot;<a href=3D"mailto:spring-chairs@ietf.org" target=3D"_blank"=
>spring-chairs@ietf.org</a>&quot; &lt;<a href=3D"mailto:spring-chairs@ietf.=
org" target=3D"_blank">spring-chairs@ietf.org</a>&gt;<br>
<b>Subject: </b>Re: [spring] WG adoption of draft-filsfils-spring-segment-r=
outing-policy?<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 lang=3D"EN-US" link=3D"blue" vlink=3D"purple"><=
div class=3D"m_-1232797663600770879WordSection1"><div>
<p class=3D"MsoNormal"><a name=3D"m_-1232797663600770879__MailOriginalBody"=
>Folks, <u></u><u></u></a></p>
<div>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span>We&#39;ve had this question a few times on the=
 list. As Bruno wrote
</span><a href=3D"https://www.ietf.org/mail-archive/web/spring/current/msg0=
3540.html" target=3D"_blank"><span>here</span><span></span></a><span>, we&#=
39;re moving towards
 WG adoption - based on discussions with Martin, and other WGs. In parallel=
, we&#39;re working with the IESG to update the charter.=C2=A0<u></u><u></u=
></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
</div>
</div></div></div><div lang=3D"EN-US" link=3D"blue" vlink=3D"purple"><div c=
lass=3D"m_-1232797663600770879WordSection1"><div><div>
<p class=3D"MsoNormal"><span>I&#39;ll repeat myself: I don&#39;t consider W=
G adoption blocking for discussions and clarifications in this document. I =
have a number of suggestions for this (see
</span><a href=3D"https://www.ietf.org/mail-archive/web/spring/current/msg0=
3541.html" target=3D"_blank"><span>here</span><span></span></a><span>), it&=
#39;d be great
 to see discussion on the mailing list of this (I haven&#39;t seen a respon=
se to this from the authors, or editors). Based on our discussions with oth=
er WGs, there are some further suggestions that will be sent as part of the=
 WG adoption call..<u></u><u></u></span></p>
</div></div></div></div><div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">=
<div class=3D"m_-1232797663600770879WordSection1"><div>
<div>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span>If there&#39;s a specific reason that we need =
to do this
<i>immediately</i>=C2=A0- please do share it. I&#39;ve had private discussi=
ons with the editors, and did not yet understand why this WG adoption call =
is blocking this work.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span>Thank you,<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span>r.<u></u><u></u></span></p>
</div>
</div></div></div><div lang=3D"EN-US" link=3D"blue" vlink=3D"purple"><div c=
lass=3D"m_-1232797663600770879WordSection1">
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
<div>
<div>
<p class=3D"MsoNormal"><span>On Mon, May 7, 2018 at 11:58 AM Paul Mattes &l=
t;</span><a href=3D"mailto:pamattes@microsoft.com" target=3D"_blank"><span>=
pamattes@microsoft.com</span><span></span></a><span>&gt;
 wrote:<u></u><u></u></span></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-right:0in">
<div>
<div>
<p class=3D"MsoNormal"><span>Hello SPRING WG chairs =E2=80=93<u></u><u></u>=
</span></p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>Would this be a good time to consider WG adopt=
ion of draft-filsfils-spring-segment-routing-policy? It is part of the WG c=
harter and
 is likely mature enough at this point.<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=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
<i>pdm</i><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>=C2=A0<u></u><u></u></span></p>
</div>
</div>
</blockquote>
</div>
</div></div></blockquote></div>

--0000000000009dc2e9056ba9cca2--


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From: Alvaro Retana <aretana.ietf@gmail.com>
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To: Ahmed Bashandy <abashandy.ietf@gmail.com>
Cc: spring@ietf.org, bruno.decraene@orange.com, stephane.litkowski@orange.com,  cfilsfil@cisco.com,  "draft-ietf-spring-segment-routing-ldp-interop@ietf.org" <draft-ietf-spring-segment-routing-ldp-interop@ietf.org>,  martin.vigoureux@nokia.com, stefano@previdi.net, spring-chairs@ietf.org
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Subject: Re: [spring] AD Review of draft-ietf-spring-segment-routing-ldp-interop-09
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On April 11, 2018 at 10:22:46 PM, Ahmed Bashandy (abashandy.ietf@gmail.com)
wrote:

Ahmed:

Hi!  How are you?

I still have a couple of comments below=E2=80=A6but nothing that should hol=
d up
process at this point.  I=E2=80=99ll start the IETF Last Call.

Thanks!

Alvaro.

...

M2.1.2. "At least one SRMS MUST be present in the routing domain.
Multiple SRMSs SHOULD be present for redundancy.=E2=80=9D  These MUST|SHOUL=
D seem
to indicate a statement of fact.  Again, from a specification point of
view, what can be enforced?  s/MUST|SHOULD/must|should. Note also that in
7.2 the text says that "Multiple SRMSs can be provisioned in a network for
redundancy.=E2=80=9D, which seems to be the right thing (no Normative langu=
age).

#Ahmed
I removed these two statements. Instead I modified the 3rd paragraph in
Section 4.2 to indicate that there must be at least one SRMS server in the
domain

The modification of that 3rd paragraph now reads: "At least one SRMS server
MUST exist in a routing domain=E2=80=A6=E2=80=9D, which really just moved t=
he issue I was
pointing to from 4.2.1 to 4.2.  As I asked before, how can that =E2=80=9CMU=
ST=E2=80=9D be
enforced?

Note that the sentence following this new text says: "Multiple SRMSs may be
present in the same network (for redundancy).=E2=80=9D  I think that=E2=80=
=99s the right
way to express what is needed (no Normative language).


M2.2. Section 7.2. says that "a preference mechanism may also be used among
SRMSs so to deploy a primary/secondary SRMS scheme=E2=80=9D=E2=80=A6but no =
other details
are included.  This document is where the SRMS is first defined, so I would
expect this detail to also be included here.  I note that Section 3.1. (SID
Preference) of draft-ietf-spring-conflict-resolution contains the
preference specification. Please move that section to this document.

Ahmed: agreed. But since section 7.2 is under the manageability
consideration, IMO it should really not contain much specification.
Instead, I modified section  4.2.2 specify how to prefer SRMS
advertisements and removed section 7.2 completely. Section 7.2 in version
11 is section 7.3 in version 10

Ok.

I see that some of the text came from =C2=A73.1 in
draft-ietf-spring-conflict-resolution, but not all of that section made it
=E2=80=94 specifically the part about the implicit preference values.  Why?

I didn=E2=80=99t check, but I=E2=80=99m assuming that the text that was mov=
ed here is not
also in draft-ietf-spring-segment-routing-mpls.  Is that true?


...

M4. Security Considerations.  I tend to agree that this document doesn=E2=
=80=99t
introduce anything new=E2=80=A6but it does specify something different.  Th=
e base
SR-related advertisement by an IGP is done for the segments belonging to
the local node, but the SRMS lets a node (any node, multiple nodes) adverse
any mapping (for nodes that may be anywhere in the network) which may
result in conflicting advertisements (in the best case), or even false
ones.  Cryptographic authentication (any any other current security
mechanisms in IGPs) only verify that the information was not changed, but
it doesn=E2=80=99t validate the information itself, which can then lead to
conflicting and or false advertisements, which could =E2=80=9Ccompromise tr=
affic
forwarding=E2=80=9D.  You should at least recognize that the risk exists, e=
ven if
no specific mitigation (except maybe strict configuration/programmability
control by the operator) can be mentioned.

#Ahmed: Agreed. Added text to indicate what you mentioned

Thanks for adding some text=E2=80=A6but I think you should still say more. =
 The
risk is of course that a rogue router can inject any mapping it wants:
logging, control, etc..help avoid mistakes, but it doesn=E2=80=99t help in =
the case
where the incorrect/false mapping is advertised on purpose.  This last case
is something I would like to see mentioned explicitly.


...

P2. Please add References for "RSVP-TE, BGP 3107, VPNv4=E2=80=9D.   BTW, no=
te that
rfc3107 has been obsoleted by rfc8277 =E2=80=94 you make references to =E2=
=80=9CBGP3107=E2=80=9D
routes/label.

#Ahmed Removed VPNv4 and added references to the others

I think that by "BGP [RFC8277]=E2=80=9D you really didn=E2=80=99t meant jus=
t =E2=80=9CBGP=E2=80=9D, but
=E2=80=9CBGP and Labeled Address Prefixes=E2=80=9D (or something like that)=
.

There are still 4 occurrences of =E2=80=9CBGP3107".

--000000000000c9fc6e056be00cbb
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<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style>=
</head><body style=3D"word-wrap:break-word"><div id=3D"bloop_customfont" st=
yle=3D"color:rgb(0,0,0);margin:0px"><font face=3D"Helvetica">On April 11, 2=
018 at 10:22:46 PM, Ahmed Bashandy (<a href=3D"mailto:abashandy.ietf@gmail.=
com">abashandy.ietf@gmail.com</a>) wrote:</font></div><div id=3D"bloop_cust=
omfont" style=3D"color:rgb(0,0,0);margin:0px"><font face=3D"Helvetica"><br>=
</font></div><div id=3D"bloop_customfont" style=3D"color:rgb(0,0,0);margin:=
0px"><font face=3D"Helvetica">Ahmed:</font></div><div id=3D"bloop_customfon=
t" style=3D"color:rgb(0,0,0);margin:0px"><font face=3D"Helvetica"><br></fon=
t></div><div id=3D"bloop_customfont" style=3D"color:rgb(0,0,0);margin:0px">=
<font face=3D"Helvetica">Hi!=C2=A0 How are you?</font></div><div id=3D"bloo=
p_customfont" style=3D"color:rgb(0,0,0);margin:0px"><font face=3D"Helvetica=
"><br></font></div><div id=3D"bloop_customfont" style=3D"color:rgb(0,0,0);m=
argin:0px"><font face=3D"Helvetica">I still have a couple of comments below=
=E2=80=A6but nothing that should hold up process at this point.=C2=A0 I=E2=
=80=99ll start the IETF Last Call.</font></div><div id=3D"bloop_customfont"=
 style=3D"color:rgb(0,0,0);margin:0px"><font face=3D"Helvetica"><br></font>=
</div><div id=3D"bloop_customfont" style=3D"color:rgb(0,0,0);margin:0px"><f=
ont face=3D"Helvetica">Thanks!</font></div><div id=3D"bloop_customfont" sty=
le=3D"color:rgb(0,0,0);margin:0px"><font face=3D"Helvetica"><br></font></di=
v><div id=3D"bloop_customfont" style=3D"color:rgb(0,0,0);margin:0px"><font =
face=3D"Helvetica">Alvaro.</font></div><div id=3D"bloop_customfont" style=
=3D"color:rgb(0,0,0);margin:0px"><font face=3D"Helvetica"><br></font></div>=
<div id=3D"bloop_customfont" style=3D"color:rgb(0,0,0);margin:0px"><font fa=
ce=3D"Helvetica">...</font></div><div><blockquote type=3D"cite" class=3D"cl=
ean_bq" style=3D"font-variant-caps:normal;letter-spacing:normal;text-align:=
start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0=
px"><span><div text=3D"#000000" bgcolor=3D"#FFFFFF"><font face=3D"Helvetica=
"><blockquote type=3D"cite" cite=3D"mid:6d395d4a-e298-958d-20a0-fe50aaa033f=
0@cisco.com"><div class=3D"moz-forward-container"><div id=3D"bloop_customfo=
nt" style=3D"margin:0px">M2.1.2. &quot;At least one SRMS MUST be present in=
 the routing domain.=C2=A0 Multiple=C2=A0SRMSs SHOULD be present for redund=
ancy.=E2=80=9D =C2=A0These MUST|SHOULD seem to indicate a statement of fact=
.=C2=A0 Again, from a specification point of view, what can be enforced? =
=C2=A0s/MUST|SHOULD/must|should. Note also that in 7.2 the text says that &=
quot;Multiple SRMSs can be provisioned in a network for redundancy.=E2=80=
=9D, which seems to be the right thing (no Normative language).</div></div>=
</blockquote>#Ahmed<br>I removed these two statements. Instead I modified t=
he 3rd paragraph in Section 4.2 to indicate that there must be at least one=
 SRMS server in the domain</font></div></span></blockquote></div><p><font f=
ace=3D"Helvetica">The modification of that 3rd paragraph now reads: &quot;A=
t least one SRMS server MUST exist in a routing domain=E2=80=A6=E2=80=9D, w=
hich really just moved the issue I was pointing to from 4.2.1 to 4.2.=C2=A0=
 As I asked before, how can that =E2=80=9CMUST=E2=80=9D be enforced?</font>=
</p><p><font face=3D"Helvetica">Note that the sentence following this new t=
ext says: &quot;Multiple SRMSs may be present in the same network (for redu=
ndancy).=E2=80=9D =C2=A0I think that=E2=80=99s the right way to express wha=
t is needed (no Normative language).</font></p><p><font face=3D"Helvetica">=
<br></font></p><div><div><blockquote type=3D"cite" class=3D"clean_bq" style=
=3D"font-variant-caps:normal;letter-spacing:normal;text-align:start;text-in=
dent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span><di=
v text=3D"#000000" bgcolor=3D"#FFFFFF"><font face=3D"Helvetica"><blockquote=
 type=3D"cite" cite=3D"mid:6d395d4a-e298-958d-20a0-fe50aaa033f0@cisco.com">=
<div class=3D"moz-forward-container"><div id=3D"bloop_customfont" style=3D"=
margin:0px">M2.2. Section 7.2. says that &quot;a preference mechanism may a=
lso be used among SRMSs so to=C2=A0deploy a primary/secondary SRMS scheme=
=E2=80=9D=E2=80=A6but no other details are included.=C2=A0 This document is=
 where the SRMS is first defined, so I would expect this detail to also be =
included here.=C2=A0 I note that Section=C2=A03.1. (SID Preference) of=C2=
=A0draft-ietf-spring-conflict-resolution contains the preference specificat=
ion. Please move that section to this document.</div></div></blockquote>Ahm=
ed: agreed. But since section 7.2 is under the manageability consideration,=
 IMO it should really not contain much specification. Instead, I modified s=
ection=C2=A0 4.2.2 specify how to prefer SRMS advertisements and removed se=
ction 7.2 completely. Section 7.2 in version 11 is section 7.3 in version 1=
0</font></div></span></blockquote></div><p><font face=3D"Helvetica">Ok.</fo=
nt></p><p><font face=3D"Helvetica">I see that some of the text came from =
=C2=A73.1 in draft-ietf-spring-conflict-resolution, but not all of that sec=
tion made it =E2=80=94 specifically the part about the implicit preference =
values.=C2=A0 Why?</font></p><p><font face=3D"Helvetica">I didn=E2=80=99t c=
heck, but I=E2=80=99m assuming that the text that was moved here is not als=
o in=C2=A0draft-ietf-spring-segment-routing-mpls.=C2=A0 Is that true?</font=
></p><p><font face=3D"Helvetica"><br></font></p><p><font face=3D"Helvetica"=
>...</font></p><div><div><blockquote type=3D"cite" class=3D"clean_bq" style=
=3D"font-variant-caps:normal;letter-spacing:normal;text-align:start;text-in=
dent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span><di=
v text=3D"#000000" bgcolor=3D"#FFFFFF"><font face=3D"Helvetica"><blockquote=
 type=3D"cite" cite=3D"mid:6d395d4a-e298-958d-20a0-fe50aaa033f0@cisco.com">=
<div class=3D"moz-forward-container"><div id=3D"bloop_customfont" style=3D"=
margin:0px">M4. Security Considerations.=C2=A0 I tend to agree that this do=
cument doesn=E2=80=99t introduce anything new=E2=80=A6but it does specify s=
omething different.=C2=A0 The base SR-related advertisement by an IGP is do=
ne for the segments belonging to the local node, but the SRMS lets a node (=
any node, multiple nodes) adverse any mapping (for nodes that may be anywhe=
re in the network) which may result in conflicting advertisements (in the b=
est case), or even false ones.=C2=A0 Cryptographic authentication (any any =
other current security mechanisms in IGPs) only verify that the information=
 was not changed, but it doesn=E2=80=99t validate the information itself, w=
hich can then lead to conflicting and or false advertisements, which could =
=E2=80=9Ccompromise traffic forwarding=E2=80=9D.=C2=A0 You should at least =
recognize that the risk exists, even if no specific mitigation (except mayb=
e strict configuration/programmability control by the operator) can be ment=
ioned.</div></div></blockquote>#Ahmed: Agreed. Added text to indicate what =
you mentioned</font></div></span></blockquote></div><p><font face=3D"Helvet=
ica">Thanks for adding some text=E2=80=A6but I think you should still say m=
ore.=C2=A0 The risk is of course that a rogue router can inject any mapping=
 it wants: logging, control, etc..help avoid mistakes, but it doesn=E2=80=
=99t help in the case where the incorrect/false mapping is advertised on pu=
rpose.=C2=A0 This last case is something I would like to see mentioned expl=
icitly.</font></p><p><font face=3D"Helvetica"><br></font></p><p><font face=
=3D"Helvetica">...</font></p><div><div><blockquote type=3D"cite" class=3D"c=
lean_bq" style=3D"font-variant-caps:normal;letter-spacing:normal;text-align=
:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:=
0px"><span><div text=3D"#000000" bgcolor=3D"#FFFFFF"><font face=3D"Helvetic=
a"><blockquote type=3D"cite" cite=3D"mid:6d395d4a-e298-958d-20a0-fe50aaa033=
f0@cisco.com"><div class=3D"moz-forward-container"><div id=3D"bloop_customf=
ont" style=3D"margin:0px">P2. Please add References for &quot;RSVP-TE, BGP =
3107, VPNv4=E2=80=9D. =C2=A0 BTW, note that rfc3107 has been obsoleted by r=
fc8277 =E2=80=94 you make references to =E2=80=9CBGP3107=E2=80=9D routes/la=
bel.</div></div></blockquote>#Ahmed Removed VPNv4 and added references to t=
he others</font></div></span></blockquote></div><p><font face=3D"Helvetica"=
>I think that by &quot;BGP [RFC8277]=E2=80=9D you really didn=E2=80=99t mea=
nt just =E2=80=9CBGP=E2=80=9D, but =E2=80=9CBGP and Labeled Address Prefixe=
s=E2=80=9D (or something like that).</font></p><p><font face=3D"Helvetica">=
There are still 4 occurrences of =E2=80=9CBGP3107&quot;.</font></p></div></=
div></div></body></html>

--000000000000c9fc6e056be00cbb--


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Subject: [spring] Last Call: <draft-ietf-spring-segment-routing-ldp-interop-11.txt> (Segment Routing interworking with LDP) to Proposed Standard
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The IESG has received a request from the Source Packet Routing in Networking
WG (spring) to consider the following document: - 'Segment Routing
interworking with LDP'
  <draft-ietf-spring-segment-routing-ldp-interop-11.txt> as Proposed Standard

The IESG plans to make a decision in the next few weeks, and solicits final
comments on this action. Please send substantive comments to the
ietf@ietf.org mailing lists by 2018-05-24. Exceptionally, comments may be
sent to iesg@ietf.org instead. In either case, please retain the beginning of
the Subject line to allow automated sorting.

Abstract


   A Segment Routing (SR) node steers a packet through a controlled set
   of instructions, called segments, by prepending the packet with an SR
   header.  A segment can represent any instruction, topological or
   service-based.  SR allows to enforce a flow through any topological
   path while maintaining per-flow state only at the ingress node to the
   SR domain.

   The Segment Routing architecture can be directly applied to the MPLS
   data plane with no change in the forwarding plane.  This document
   describes how Segment Routing operates in a network where LDP is
   deployed and in the case where SR-capable and non-SR-capable nodes
   coexist.





The file can be obtained via
https://datatracker.ietf.org/doc/draft-ietf-spring-segment-routing-ldp-interop/

IESG discussion can be tracked via
https://datatracker.ietf.org/doc/draft-ietf-spring-segment-routing-ldp-interop/ballot/

The following IPR Declarations may be related to this I-D:

   https://datatracker.ietf.org/ipr/2456/
   https://datatracker.ietf.org/ipr/2277/






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To: Alvaro Retana <aretana.ietf@gmail.com>
Cc: spring@ietf.org, bruno.decraene@orange.com, stephane.litkowski@orange.com, cfilsfil@cisco.com, "draft-ietf-spring-segment-routing-ldp-interop@ietf.org" <draft-ietf-spring-segment-routing-ldp-interop@ietf.org>, martin.vigoureux@nokia.com, stefano@previdi.net, spring-chairs@ietf.org
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From: Ahmed Bashandy <abashandy.ietf@gmail.com>
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Subject: Re: [spring] AD Review of draft-ietf-spring-segment-routing-ldp-interop-09
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Thanks you very much

I will take care of the comments below in the next version that I plan 
to put out in next week

Ahmed

On 5/10/18 1:41 PM, Alvaro Retana wrote:
> On April 11, 2018 at 10:22:46 PM, Ahmed Bashandy 
> (abashandy.ietf@gmail.com <mailto:abashandy.ietf@gmail.com>) wrote:
>
> Ahmed:
>
> Hi!  How are you?
>
> I still have a couple of comments below…but nothing that should hold 
> up process at this point.  I’ll start the IETF Last Call.
>
> Thanks!
>
> Alvaro.
>
> ...
>>> M2.1.2. "At least one SRMS MUST be present in the routing domain.  
>>> Multiple SRMSs SHOULD be present for redundancy.”  These MUST|SHOULD 
>>> seem to indicate a statement of fact.  Again, from a specification 
>>> point of view, what can be enforced?  s/MUST|SHOULD/must|should. 
>>> Note also that in 7.2 the text says that "Multiple SRMSs can be 
>>> provisioned in a network for redundancy.”, which seems to be the 
>>> right thing (no Normative language).
>> #Ahmed
>> I removed these two statements. Instead I modified the 3rd paragraph 
>> in Section 4.2 to indicate that there must be at least one SRMS 
>> server in the domain
>
> The modification of that 3rd paragraph now reads: "At least one SRMS 
> server MUST exist in a routing domain…”, which really just moved the 
> issue I was pointing to from 4.2.1 to 4.2.  As I asked before, how can 
> that “MUST” be enforced?
>
> Note that the sentence following this new text says: "Multiple SRMSs 
> may be present in the same network (for redundancy).”  I think that’s 
> the right way to express what is needed (no Normative language).
>
>
>>> M2.2. Section 7.2. says that "a preference mechanism may also be 
>>> used among SRMSs so to deploy a primary/secondary SRMS scheme”…but 
>>> no other details are included.  This document is where the SRMS is 
>>> first defined, so I would expect this detail to also be included 
>>> here.  I note that Section 3.1. (SID Preference) 
>>> of draft-ietf-spring-conflict-resolution contains the preference 
>>> specification. Please move that section to this document.
>> Ahmed: agreed. But since section 7.2 is under the manageability 
>> consideration, IMO it should really not contain much specification. 
>> Instead, I modified section  4.2.2 specify how to prefer SRMS 
>> advertisements and removed section 7.2 completely. Section 7.2 in 
>> version 11 is section 7.3 in version 10
>
> Ok.
>
> I see that some of the text came from §3.1 in 
> draft-ietf-spring-conflict-resolution, but not all of that section 
> made it — specifically the part about the implicit preference values.  
> Why?
>
> I didn’t check, but I’m assuming that the text that was moved here is 
> not also in draft-ietf-spring-segment-routing-mpls.  Is that true?
>
>
> ...
>
>>> M4. Security Considerations.  I tend to agree that this document 
>>> doesn’t introduce anything new…but it does specify something 
>>> different. The base SR-related advertisement by an IGP is done for 
>>> the segments belonging to the local node, but the SRMS lets a node 
>>> (any node, multiple nodes) adverse any mapping (for nodes that may 
>>> be anywhere in the network) which may result in conflicting 
>>> advertisements (in the best case), or even false ones.  
>>> Cryptographic authentication (any any other current security 
>>> mechanisms in IGPs) only verify that the information was not 
>>> changed, but it doesn’t validate the information itself, which can 
>>> then lead to conflicting and or false advertisements, which could 
>>> “compromise traffic forwarding”.  You should at least recognize that 
>>> the risk exists, even if no specific mitigation (except maybe strict 
>>> configuration/programmability control by the operator) can be mentioned.
>> #Ahmed: Agreed. Added text to indicate what you mentioned
>
> Thanks for adding some text…but I think you should still say more.  
> The risk is of course that a rogue router can inject any mapping it 
> wants: logging, control, etc..help avoid mistakes, but it doesn’t help 
> in the case where the incorrect/false mapping is advertised on 
> purpose.  This last case is something I would like to see mentioned 
> explicitly.
>
>
> ...
>
>>> P2. Please add References for "RSVP-TE, BGP 3107, VPNv4”.   BTW, 
>>> note that rfc3107 has been obsoleted by rfc8277 — you make 
>>> references to “BGP3107” routes/label.
>> #Ahmed Removed VPNv4 and added references to the others
>
> I think that by "BGP [RFC8277]” you really didn’t meant just “BGP”, 
> but “BGP and Labeled Address Prefixes” (or something like that).
>
> There are still 4 occurrences of “BGP3107".
>


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<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    <p>Thanks you very much<br>
    </p>
    I will take care of the comments below in the next version that I
    plan to put out in next week<br>
    <br>
    Ahmed<br>
    <br>
    <div class="moz-cite-prefix">On 5/10/18 1:41 PM, Alvaro Retana
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAMMESszMc=LnS42gWdc_MkD5pqNzPcJo88wgnC6V+wK+taytgw@mail.gmail.com">
      <style>body{font-family:Helvetica,Arial;font-size:13px}</style>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica">On April 11, 2018 at 10:22:46 PM, Ahmed
          Bashandy (<a href="mailto:abashandy.ietf@gmail.com"
            moz-do-not-send="true">abashandy.ietf@gmail.com</a>) wrote:</font></div>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica"><br>
        </font></div>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica">Ahmed:</font></div>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica"><br>
        </font></div>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica">Hi!  How are you?</font></div>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica"><br>
        </font></div>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica">I still have a couple of comments below…but
          nothing that should hold up process at this point.  I’ll start
          the IETF Last Call.</font></div>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica"><br>
        </font></div>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica">Thanks!</font></div>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica"><br>
        </font></div>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica">Alvaro.</font></div>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica"><br>
        </font></div>
      <div id="bloop_customfont" style="color:rgb(0,0,0);margin:0px"><font
          face="Helvetica">...</font></div>
      <div>
        <blockquote type="cite" class="clean_bq"
style="font-variant-caps:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span>
            <div text="#000000" bgcolor="#FFFFFF"><font face="Helvetica">
                <blockquote type="cite"
                  cite="mid:6d395d4a-e298-958d-20a0-fe50aaa033f0@cisco.com">
                  <div class="moz-forward-container">
                    <div id="bloop_customfont" style="margin:0px">M2.1.2.
                      "At least one SRMS MUST be present in the routing
                      domain.  Multiple SRMSs SHOULD be present for
                      redundancy.”  These MUST|SHOULD seem to indicate a
                      statement of fact.  Again, from a specification
                      point of view, what can be enforced?
                       s/MUST|SHOULD/must|should. Note also that in 7.2
                      the text says that "Multiple SRMSs can be
                      provisioned in a network for redundancy.”, which
                      seems to be the right thing (no Normative
                      language).</div>
                  </div>
                </blockquote>
                #Ahmed<br>
                I removed these two statements. Instead I modified the
                3rd paragraph in Section 4.2 to indicate that there must
                be at least one SRMS server in the domain</font></div>
          </span></blockquote>
      </div>
      <p><font face="Helvetica">The modification of that 3rd paragraph
          now reads: "At least one SRMS server MUST exist in a routing
          domain…”, which really just moved the issue I was pointing to
          from 4.2.1 to 4.2.  As I asked before, how can that “MUST” be
          enforced?</font></p>
      <p><font face="Helvetica">Note that the sentence following this
          new text says: "Multiple SRMSs may be present in the same
          network (for redundancy).”  I think that’s the right way to
          express what is needed (no Normative language).</font></p>
      <p><font face="Helvetica"><br>
        </font></p>
      <div>
        <div>
          <blockquote type="cite" class="clean_bq"
style="font-variant-caps:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span>
              <div text="#000000" bgcolor="#FFFFFF"><font
                  face="Helvetica">
                  <blockquote type="cite"
                    cite="mid:6d395d4a-e298-958d-20a0-fe50aaa033f0@cisco.com">
                    <div class="moz-forward-container">
                      <div id="bloop_customfont" style="margin:0px">M2.2.
                        Section 7.2. says that "a preference mechanism
                        may also be used among SRMSs so to deploy a
                        primary/secondary SRMS scheme”…but no other
                        details are included.  This document is where
                        the SRMS is first defined, so I would expect
                        this detail to also be included here.  I note
                        that Section 3.1. (SID Preference)
                        of draft-ietf-spring-conflict-resolution
                        contains the preference specification. Please
                        move that section to this document.</div>
                    </div>
                  </blockquote>
                  Ahmed: agreed. But since section 7.2 is under the
                  manageability consideration, IMO it should really not
                  contain much specification. Instead, I modified
                  section  4.2.2 specify how to prefer SRMS
                  advertisements and removed section 7.2 completely.
                  Section 7.2 in version 11 is section 7.3 in version 10</font></div>
            </span></blockquote>
        </div>
        <p><font face="Helvetica">Ok.</font></p>
        <p><font face="Helvetica">I see that some of the text came from
            §3.1 in draft-ietf-spring-conflict-resolution, but not all
            of that section made it — specifically the part about the
            implicit preference values.  Why?</font></p>
        <p><font face="Helvetica">I didn’t check, but I’m assuming that
            the text that was moved here is not also
            in draft-ietf-spring-segment-routing-mpls.  Is that true?</font></p>
        <p><font face="Helvetica"><br>
          </font></p>
        <p><font face="Helvetica">...</font></p>
        <div>
          <div>
            <blockquote type="cite" class="clean_bq"
style="font-variant-caps:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span>
                <div text="#000000" bgcolor="#FFFFFF"><font
                    face="Helvetica">
                    <blockquote type="cite"
                      cite="mid:6d395d4a-e298-958d-20a0-fe50aaa033f0@cisco.com">
                      <div class="moz-forward-container">
                        <div id="bloop_customfont" style="margin:0px">M4.
                          Security Considerations.  I tend to agree that
                          this document doesn’t introduce anything
                          new…but it does specify something different. 
                          The base SR-related advertisement by an IGP is
                          done for the segments belonging to the local
                          node, but the SRMS lets a node (any node,
                          multiple nodes) adverse any mapping (for nodes
                          that may be anywhere in the network) which may
                          result in conflicting advertisements (in the
                          best case), or even false ones.  Cryptographic
                          authentication (any any other current security
                          mechanisms in IGPs) only verify that the
                          information was not changed, but it doesn’t
                          validate the information itself, which can
                          then lead to conflicting and or false
                          advertisements, which could “compromise
                          traffic forwarding”.  You should at least
                          recognize that the risk exists, even if no
                          specific mitigation (except maybe strict
                          configuration/programmability control by the
                          operator) can be mentioned.</div>
                      </div>
                    </blockquote>
                    #Ahmed: Agreed. Added text to indicate what you
                    mentioned</font></div>
              </span></blockquote>
          </div>
          <p><font face="Helvetica">Thanks for adding some text…but I
              think you should still say more.  The risk is of course
              that a rogue router can inject any mapping it wants:
              logging, control, etc..help avoid mistakes, but it doesn’t
              help in the case where the incorrect/false mapping is
              advertised on purpose.  This last case is something I
              would like to see mentioned explicitly.</font></p>
          <p><font face="Helvetica"><br>
            </font></p>
          <p><font face="Helvetica">...</font></p>
          <div>
            <div>
              <blockquote type="cite" class="clean_bq"
style="font-variant-caps:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span>
                  <div text="#000000" bgcolor="#FFFFFF"><font
                      face="Helvetica">
                      <blockquote type="cite"
                        cite="mid:6d395d4a-e298-958d-20a0-fe50aaa033f0@cisco.com">
                        <div class="moz-forward-container">
                          <div id="bloop_customfont" style="margin:0px">P2.
                            Please add References for "RSVP-TE, BGP
                            3107, VPNv4”.   BTW, note that rfc3107 has
                            been obsoleted by rfc8277 — you make
                            references to “BGP3107” routes/label.</div>
                        </div>
                      </blockquote>
                      #Ahmed Removed VPNv4 and added references to the
                      others</font></div>
                </span></blockquote>
            </div>
            <p><font face="Helvetica">I think that by "BGP [RFC8277]”
                you really didn’t meant just “BGP”, but “BGP and Labeled
                Address Prefixes” (or something like that).</font></p>
            <p><font face="Helvetica">There are still 4 occurrences of
                “BGP3107".</font></p>
          </div>
        </div>
      </div>
    </blockquote>
    <br>
  </body>
</html>

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Subject: [spring] Closed: should draft-ietf-mpls-spring-entropy-label be published as a RFC on the standards track?
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Working Group,

This poll has been closed.

We have no objections to publishing draft-ietf-mpls-spring-entropy-label
as a RFC on the standards track. We also seem to have some support for
adding information that an entropy label is not necessarily the only
method handling ECMP.

I will forward this to Deborah (AD responsible for this document).

/Loa

On 2018-05-02 09:44, Loa Andersson wrote:
> Working Group,
> 
> February 1st the MPLS working Group requested that draft-ietf-mpls-
> spring-entropy-label should be published as an Informational RFC.
> 
> During the RTG Directorate and AD reviews the question whether the
> document should instead be published as a RFC on the Standards Track
> has been raised.
> 
> The decision to make the document Informational was taken "a long time
> ago", based on discussions between the authors and involving the
> document shepherd, on the wg mailing list. At that point it we were
> convinced that the document should be progressed as an Informational
> document.
> 
> It turns out that there has been such changes to the document that we
> now would like to request input from the working group if we should make
> the document a Standards Track RFC.
> 
> Daniele's RTG Directorate review can be found at at:
> https://datatracker.ietf.org/doc/review-ietf-mpls-spring-entropy-label-08-rtgdir-lc-ceccarelli-2018-02-21/ 
> 
> 
> All the issues, with the exception whether it should be Informational
> or Standards track, has been resolved as part AD review.
> 
> If the document is progressed as a Standard Tracks document then we
> also need to answer the question whether this is an update RFC 6790.
> 
> This mail starts a one week poll (ending May 9) to see if we have
> support to make the document a Standards Track document. If you support
> placing it on the Standards Track also consider if it is an update to
> RFC 6790.
> 
> Please send your comments to the MPLS wg mailing list ( mpls@ietf.org ).
> 
> /Loa
> for the mpls wf co-chairs
> 
> PS
> 
> I'm copying the spring working group on this mail.

-- 


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


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Subject: [spring] Genart last call review of draft-ietf-spring-segment-routing-ldp-interop-11
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Reviewer: Joel Halpern
Review result: Ready with Issues

I am the assigned Gen-ART reviewer for this draft. The General Area
Review Team (Gen-ART) reviews all IETF documents being processed
by the IESG for the IETF Chair.  Please treat these comments just
like any other last call comments.

For more information, please see the FAQ at

<https://trac.ietf.org/trac/gen/wiki/GenArtfaq>.

Document: draft-ietf-spring-segment-routing-ldp-interop-11
Reviewer: Joel Halpern
Review Date: 2018-05-14
IETF LC End Date: 2018-05-24
IESG Telechat date: Not scheduled for a telechat

Summary: This document appears to be ready for publication as an RFC.  The
question of whether it is an Informational RFC or a Proposed Standards track
RFC is one that the ADs should examine.

Major issues:
    This document is quite readable, and quite useful.  If my reading below
    (minor comment about section 4.2) is wrong, then everything is fine. 
    However, reading the text, it does not appear to define SRMS.  Rather, it
    describes a good way to use SRMS to achive smooth SR - LDP integration and
    migration.  As such, this seems to me to be a really good Informational
    Document.

Minor issues:
    Section 4.2 states that it defines the SRMS (Segment Routing Mapping
    Server).  Looking at the relevant routing protocol document, they point to
    https://tools.ietf.org/html/draft-ietf-spring-conflict-resolution-05 as the
    defining source for the SRMS.  And that document does appear to define the
    SRMS.

Nits/editorial comments:



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From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: Joel Halpern <jmh@joelhalpern.com>, "gen-art@ietf.org" <gen-art@ietf.org>
CC: "draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org" <draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "ietf@ietf.org" <ietf@ietf.org>
Thread-Topic: [spring] Genart last call review of draft-ietf-spring-segment-routing-ldp-interop-11
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Joel -

I am not an author of this draft - but I am an author on the referenced IS-=
IS draft - which I assume is one of the drafts mentioned in  your comment:

>     Server).  Looking at the relevant routing protocol document, they poi=
nt to
>     https://tools.ietf.org/html/draft-ietf-spring-conflict-resolution-05 =
as the
>     defining source for the SRMS. =20

The IGP document references in the ldp-interop draft are stale. Newer versi=
ons of the IGP drafts have been published and they no longer reference draf=
t-ietf-spring-conflict-resolution - a draft which is no longer active.

HTH

    Les


> -----Original Message-----
> From: spring <spring-bounces@ietf.org> On Behalf Of Joel Halpern
> Sent: Monday, May 14, 2018 1:01 PM
> To: gen-art@ietf.org
> Cc: draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org;
> spring@ietf.org; ietf@ietf.org
> Subject: [spring] Genart last call review of draft-ietf-spring-segment-ro=
uting-
> ldp-interop-11
>=20
> Reviewer: Joel Halpern
> Review result: Ready with Issues
>=20
> I am the assigned Gen-ART reviewer for this draft. The General Area Revie=
w
> Team (Gen-ART) reviews all IETF documents being processed by the IESG for
> the IETF Chair.  Please treat these comments just like any other last cal=
l
> comments.
>=20
> For more information, please see the FAQ at
>=20
> <https://trac.ietf.org/trac/gen/wiki/GenArtfaq>.
>=20
> Document: draft-ietf-spring-segment-routing-ldp-interop-11
> Reviewer: Joel Halpern
> Review Date: 2018-05-14
> IETF LC End Date: 2018-05-24
> IESG Telechat date: Not scheduled for a telechat
>=20
> Summary: This document appears to be ready for publication as an RFC.  Th=
e
> question of whether it is an Informational RFC or a Proposed Standards tr=
ack
> RFC is one that the ADs should examine.
>=20
> Major issues:
>     This document is quite readable, and quite useful.  If my reading bel=
ow
>     (minor comment about section 4.2) is wrong, then everything is fine.
>     However, reading the text, it does not appear to define SRMS.  Rather=
, it
>     describes a good way to use SRMS to achive smooth SR - LDP integratio=
n
> and
>     migration.  As such, this seems to me to be a really good Information=
al
>     Document.
>=20
> Minor issues:
>     Section 4.2 states that it defines the SRMS (Segment Routing Mapping
>     Server).  Looking at the relevant routing protocol document, they poi=
nt to
>     https://tools.ietf.org/html/draft-ietf-spring-conflict-resolution-05 =
as the
>     defining source for the SRMS.  And that document does appear to defin=
e
> the
>     SRMS.
>=20
> Nits/editorial comments:
>=20
>=20
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring


From nobody Mon May 14 13:16:29 2018
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To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, Joel Halpern <jmh@joelhalpern.com>, "gen-art@ietf.org" <gen-art@ietf.org>
Cc: "draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org" <draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "ietf@ietf.org" <ietf@ietf.org>
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Subject: Re: [spring] Genart last call review of draft-ietf-spring-segment-routing-ldp-interop-11
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Thanks Les.  I wondered if that were the case.

Looking again at the draft, the problem then is that section 4.2 of the 
subject draft is not a normative definition of an SRMS.  It states the 
general functionality, and then provides an example of how it would work 
in the given scenario.

If the text were enhanced to be an effective normative definition of an 
SRMS, then that would also resolve the quesiton of the intended status 
of the draft.

Yours,
Joel

On 5/14/18 4:12 PM, Les Ginsberg (ginsberg) wrote:
> Joel -
> 
> I am not an author of this draft - but I am an author on the referenced IS-IS draft - which I assume is one of the drafts mentioned in  your comment:
> 
>>      Server).  Looking at the relevant routing protocol document, they point to
>>      https://tools.ietf.org/html/draft-ietf-spring-conflict-resolution-05 as the
>>      defining source for the SRMS.
> 
> The IGP document references in the ldp-interop draft are stale. Newer versions of the IGP drafts have been published and they no longer reference draft-ietf-spring-conflict-resolution - a draft which is no longer active.
> 
> HTH
> 
>      Les
> 
> 
>> -----Original Message-----
>> From: spring <spring-bounces@ietf.org> On Behalf Of Joel Halpern
>> Sent: Monday, May 14, 2018 1:01 PM
>> To: gen-art@ietf.org
>> Cc: draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org;
>> spring@ietf.org; ietf@ietf.org
>> Subject: [spring] Genart last call review of draft-ietf-spring-segment-routing-
>> ldp-interop-11
>>
>> Reviewer: Joel Halpern
>> Review result: Ready with Issues
>>
>> I am the assigned Gen-ART reviewer for this draft. The General Area Review
>> Team (Gen-ART) reviews all IETF documents being processed by the IESG for
>> the IETF Chair.  Please treat these comments just like any other last call
>> comments.
>>
>> For more information, please see the FAQ at
>>
>> <https://trac.ietf.org/trac/gen/wiki/GenArtfaq>.
>>
>> Document: draft-ietf-spring-segment-routing-ldp-interop-11
>> Reviewer: Joel Halpern
>> Review Date: 2018-05-14
>> IETF LC End Date: 2018-05-24
>> IESG Telechat date: Not scheduled for a telechat
>>
>> Summary: This document appears to be ready for publication as an RFC.  The
>> question of whether it is an Informational RFC or a Proposed Standards track
>> RFC is one that the ADs should examine.
>>
>> Major issues:
>>      This document is quite readable, and quite useful.  If my reading below
>>      (minor comment about section 4.2) is wrong, then everything is fine.
>>      However, reading the text, it does not appear to define SRMS.  Rather, it
>>      describes a good way to use SRMS to achive smooth SR - LDP integration
>> and
>>      migration.  As such, this seems to me to be a really good Informational
>>      Document.
>>
>> Minor issues:
>>      Section 4.2 states that it defines the SRMS (Segment Routing Mapping
>>      Server).  Looking at the relevant routing protocol document, they point to
>>      https://tools.ietf.org/html/draft-ietf-spring-conflict-resolution-05 as the
>>      defining source for the SRMS.  And that document does appear to define
>> the
>>      SRMS.
>>
>> Nits/editorial comments:
>>
>>
>> _______________________________________________
>> spring mailing list
>> spring@ietf.org
>> https://www.ietf.org/mailman/listinfo/spring


From nobody Mon May 14 13:32:17 2018
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From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: Joel Halpern Direct <jmh.direct@joelhalpern.com>, Joel Halpern <jmh@joelhalpern.com>, "gen-art@ietf.org" <gen-art@ietf.org>
CC: "draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org" <draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "ietf@ietf.org" <ietf@ietf.org>
Thread-Topic: [spring] Genart last call review of draft-ietf-spring-segment-routing-ldp-interop-11
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To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, "gen-art@ietf.org" <gen-art@ietf.org>
Cc: "draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org" <draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "ietf@ietf.org" <ietf@ietf.org>
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From: Joel Halpern Direct <jmh.direct@joelhalpern.com>
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Subject: Re: [spring] Genart last call review of draft-ietf-spring-segment-routing-ldp-interop-11
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I meant "this" (the document under review), not "that" 
(conflict-resolution).  Since the other documents I found indicated that 
conflict resolution defined it, I assumed it did.    Given that 
conflict-resolution is a dead document, something needs to actually 
define the SRMS.

Yours,
Joel

On 5/14/18 4:32 PM, Les Ginsberg (ginsberg) wrote:
> Joel -
> 
> I don’t fully understand the rest of your comment then. You said:
> 
> " And that document does appear to define the  SRMS."
> 
> (where "that document" refers to draft-ietf-spring-conflict-resolution).
> 
> But the conflict resolution document never defined an SRMS - it merely described how SRMS advertisements were used in the context of conflict resolution.
> So if you are unsatisfied with the "SRMS definition" in ldp-interop draft I think you need to be more clear as to what you think is lacking.
> 
> I leave it to the draft authors to resolve this issue with you.
> 
>      Les
> 
> 
>> -----Original Message-----
>> From: Joel Halpern Direct <jmh.direct@joelhalpern.com>
>> Sent: Monday, May 14, 2018 1:16 PM
>> To: Les Ginsberg (ginsberg) <ginsberg@cisco.com>; Joel Halpern
>> <jmh@joelhalpern.com>; gen-art@ietf.org
>> Cc: draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org;
>> spring@ietf.org; ietf@ietf.org
>> Subject: Re: [spring] Genart last call review of draft-ietf-spring-segment-
>> routing-ldp-interop-11
>>
>> Thanks Les.  I wondered if that were the case.
>>
>> Looking again at the draft, the problem then is that section 4.2 of the subject
>> draft is not a normative definition of an SRMS.  It states the general
>> functionality, and then provides an example of how it would work in the
>> given scenario.
>>
>> If the text were enhanced to be an effective normative definition of an
>> SRMS, then that would also resolve the quesiton of the intended status of
>> the draft.
>>
>> Yours,
>> Joel
>>
>> On 5/14/18 4:12 PM, Les Ginsberg (ginsberg) wrote:
>>> Joel -
>>>
>>> I am not an author of this draft - but I am an author on the referenced IS-IS
>> draft - which I assume is one of the drafts mentioned in  your comment:
>>>
>>>>       Server).  Looking at the relevant routing protocol document, they point
>> to
>>>>       https://tools.ietf.org/html/draft-ietf-spring-conflict-resolution-05 as
>> the
>>>>       defining source for the SRMS.
>>>
>>> The IGP document references in the ldp-interop draft are stale. Newer
>> versions of the IGP drafts have been published and they no longer reference
>> draft-ietf-spring-conflict-resolution - a draft which is no longer active.
>>>
>>> HTH
>>>
>>>       Les
>>>
>>>
>>>> -----Original Message-----
>>>> From: spring <spring-bounces@ietf.org> On Behalf Of Joel Halpern
>>>> Sent: Monday, May 14, 2018 1:01 PM
>>>> To: gen-art@ietf.org
>>>> Cc: draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org;
>>>> spring@ietf.org; ietf@ietf.org
>>>> Subject: [spring] Genart last call review of
>>>> draft-ietf-spring-segment-routing-
>>>> ldp-interop-11
>>>>
>>>> Reviewer: Joel Halpern
>>>> Review result: Ready with Issues
>>>>
>>>> I am the assigned Gen-ART reviewer for this draft. The General Area
>>>> Review Team (Gen-ART) reviews all IETF documents being processed by
>>>> the IESG for the IETF Chair.  Please treat these comments just like
>>>> any other last call comments.
>>>>
>>>> For more information, please see the FAQ at
>>>>
>>>> <https://trac.ietf.org/trac/gen/wiki/GenArtfaq>.
>>>>
>>>> Document: draft-ietf-spring-segment-routing-ldp-interop-11
>>>> Reviewer: Joel Halpern
>>>> Review Date: 2018-05-14
>>>> IETF LC End Date: 2018-05-24
>>>> IESG Telechat date: Not scheduled for a telechat
>>>>
>>>> Summary: This document appears to be ready for publication as an RFC.
>>>> The question of whether it is an Informational RFC or a Proposed
>>>> Standards track RFC is one that the ADs should examine.
>>>>
>>>> Major issues:
>>>>       This document is quite readable, and quite useful.  If my reading below
>>>>       (minor comment about section 4.2) is wrong, then everything is fine.
>>>>       However, reading the text, it does not appear to define SRMS.  Rather,
>> it
>>>>       describes a good way to use SRMS to achive smooth SR - LDP
>>>> integration and
>>>>       migration.  As such, this seems to me to be a really good Informational
>>>>       Document.
>>>>
>>>> Minor issues:
>>>>       Section 4.2 states that it defines the SRMS (Segment Routing Mapping
>>>>       Server).  Looking at the relevant routing protocol document, they point
>> to
>>>>       https://tools.ietf.org/html/draft-ietf-spring-conflict-resolution-05 as
>> the
>>>>       defining source for the SRMS.  And that document does appear to
>>>> define the
>>>>       SRMS.
>>>>
>>>> Nits/editorial comments:
>>>>
>>>>
>>>> _______________________________________________
>>>> spring mailing list
>>>> spring@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/spring


From nobody Tue May 15 07:07:40 2018
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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):  2 Hours
Number of Attendees: 90
Conflicts to Avoid: 
 First Priority:  lsr mpls idr
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People who must be present:
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  Rob Shakir

Resources Requested:

Special Requests:
  Stong preference for Monday/Tuesday as one chair will need to leave the IETF meeting earlier.
---------------------------------------------------------


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<span lang=3D"EN-US" style=3D"font-size:11.0pt;line-height:115%;font-family=
:=CB=CE=CC=E5">Hi,</span><span lang=3D"EN-US">
<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-bottom:10.0pt;text-indent:16.5pt;lin=
e-height:115%;text-autospace:none">
<span lang=3D"EN-US" style=3D"font-size:11.0pt;line-height:115%;font-family=
:=CB=CE=CC=E5">draft-ali-spring-srv6-oam-00 says
</span><span lang=3D"EN" style=3D"font-family:&quot;PT Mono&quot;;color:bla=
ck">The OAM packets are identified by setting the
</span><span lang=3D"EN" style=3D"font-family:&quot;PT Mono&quot;;color:#FF=
C000">O-bit </span><span lang=3D"EN" style=3D"font-family:&quot;PT Mono&quo=
t;;color:black">in SRH</span><span style=3D"font-family:=CB=CE=CC=E5;color:=
black">=A3=AC</span><span lang=3D"EN" style=3D"font-family:&quot;PT Mono&qu=
ot;;color:black">But
 I </span><span class=3D"shorttext"><span lang=3D"EN" style=3D"font-family:=
&quot;Arial&quot;,sans-serif;color:#222222">Notice the latest
</span></span><span lang=3D"EN" style=3D"font-family:&quot;PT Mono&quot;;co=
lor:black">I-D.6man-segment-routing-header</span><span class=3D"shorttext">=
<span lang=3D"EN" style=3D"font-family:&quot;Arial&quot;,sans-serif;color:#=
222222"> has removed O-bit in the SRH extension header.
</span></span><span lang=3D"EN" style=3D"font-family:&quot;Arial&quot;,sans=
-serif;color:#222222">I want to confirm that draft-ali-spring-srv6-oam-00 w=
ill also remove o-bit or keep the o-bit in the later version?</span><span l=
ang=3D"EN" style=3D"font-size:11.0pt;line-height:115%;font-family:=CB=CE=CC=
=E5"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Ths<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:black">ZhiBo Hu<=
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: "Zafar Ali (zali)" <zali@cisco.com>
To: Huzhibo <huzhibo@huawei.com>, "draft-ali-spring-srv6-oam@ietf.org" <draft-ali-spring-srv6-oam@ietf.org>, "spring@ietf.org" <spring@ietf.org>
CC: Lizhenbin <lizhenbin@huawei.com>, Yangang <yangang@huawei.com>, "Zafar Ali (zali)" <zali@cisco.com>
Thread-Topic: About draft-ali-spring-srv6-oam-00
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Date: Wed, 16 May 2018 11:55:08 +0000
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From: Rob Shakir <robjs@google.com>
Date: Wed, 16 May 2018 08:20:23 -0700
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To: SPRING WG List <spring@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/ymlCa-4HKZSgBM19IYjPcgfKpkU>
Subject: [spring] IPR Poll for draft-filsfils-spring-segment-routing-policy
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--000000000000a02b52056c544277
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Hi SPRING WG,

In parallel to the call for adoption
for draft-filsfils-spring-segment-routing-policy, we would like to poll for
IPR.

If you are aware of IPR that applies
to draft-filsfils-spring-segment-routing-policy please respond to this
email. If you are aware of IPR, please indicate whether it has been
disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and 5378
provide more details).

If you are an *author or contributor* please respond to this email
regardless of whether or not you're aware of any IPR. If you are not an
author or contributor, please explicitly respond only if you are aware of
IPR that has not yet been disclosed.

This document will not advance into the working group until IPR
confirmations have been received from all authors and contributors.

Thanks,
Bruno & Rob.

--000000000000a02b52056c544277
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<div dir=3D"ltr">Hi SPRING WG,<div><br></div><div>In parallel to the call f=
or adoption for=C2=A0draft-filsfils-spring-segment-routing-policy, we would=
 like to poll for IPR.</div><div><br></div><div>If you are aware of IPR tha=
t applies to=C2=A0draft-filsfils-spring-segment-routing-policy please respo=
nd to this email. If you are aware of IPR, please indicate whether it has b=
een disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and =
5378 provide more details).</div><div><br></div><div>If you are an <b>autho=
r or contributor</b>=C2=A0please respond to this email regardless of whethe=
r or not you&#39;re aware of any IPR. If you are not an author or contribut=
or, please explicitly respond only if you are aware of IPR that has not yet=
 been disclosed.</div><div><br></div><div>This document will not advance in=
to the working group until IPR confirmations have been received from all au=
thors and contributors.</div><div><br></div><div>Thanks,</div><div>Bruno &a=
mp; Rob.</div></div>

--000000000000a02b52056c544277--


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From: Rob Shakir <robjs@google.com>
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Subject: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Hi SPRING WG,

This email initiates a two week call for working group adoption
for draft-filsfils-spring-segment-routing-policy. Please indicate your
support, or otherwise, for adopting this draft as a working group item by *30th
May 2018*. We are particularly interested in hearing from working group
members that are not co-authors of this draft.

As part of the discussions of adopting this draft into SPRING with the ADs
and chairs of other WGs, there are a number of requests to the authors.

1. Please clarify in the text traffic steering with "SR policy" and its
relationship to other traffic engineering functions. It seems to me that
this work is generally describing how one selects and steers traffic into
policies, rather than path calculation. Additional clarification of whether
this is the case (or not), would be welcome to ensure that the relationship
with other work is clear. We would ask the authors to consider whether
sections 14.1-14.4 are required scope of this document.

2. Consider what the core content of this document is, and how it can be
make as concise and clear as possible. There are some specific suggestions
that can be made here, but we would like to see this discussed with the
working group.

Additionally, there are currently 17 authors listed on this document.
Please trim this to <= 5 front-page authors, utilising a "Contributors"
section if required for the others. An approach to achieving this would be
to list ~2 editors as the front-page authors.

In parallel to this adoption call, I will send an IPR call for this
document. We will need all 17 authors to confirm their IPR position on this
document.

Thanks,
Bruno & Rob.

--000000000000a06098056c54428b
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<div dir=3D"ltr">Hi SPRING WG,<div><br></div><div>This email initiates a tw=
o week call for working group adoption for=C2=A0draft-filsfils-spring-segme=
nt-routing-policy. Please indicate your support, or otherwise, for adopting=
 this draft as a working group item by <b>30th May 2018</b>. We are particu=
larly interested in hearing from working group members that are not co-auth=
ors of this draft.</div><div><br></div><div>As part of the discussions of a=
dopting this draft into SPRING with the ADs and chairs of other WGs, there =
are a number of requests to the authors.</div><div><br></div><div>1. Please=
 clarify in the text traffic steering with &quot;SR policy&quot; and its re=
lationship to other traffic engineering functions. It seems to me that this=
 work is generally describing how one selects and steers traffic into polic=
ies, rather than path calculation. Additional clarification of whether this=
 is the case (or not), would be welcome to ensure that the relationship wit=
h other work is clear. We would ask the authors to consider whether section=
s 14.1-14.4 are required scope of this document.</div><div><br></div><div>2=
. Consider what the core content of this document is, and how it can be mak=
e as concise and clear as possible. There are some specific suggestions tha=
t can be made here, but we would like to see this discussed with the workin=
g group.</div><div><br></div><div>Additionally, there are currently 17 auth=
ors listed on this document. Please trim this to &lt;=3D 5 front-page autho=
rs, utilising a &quot;Contributors&quot; section if required for the others=
. An approach to achieving this would be to list ~2 editors as the front-pa=
ge authors.</div><div><br></div><div>In parallel to this adoption call, I w=
ill send an IPR call for this document. We will need all 17 authors to conf=
irm their IPR position on this document.</div><div><br></div><div>Thanks,</=
div><div>Bruno &amp; Rob.</div></div>

--000000000000a06098056c54428b--


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From: Alex Bogdanov <bogdanov@google.com>
Date: Wed, 16 May 2018 08:56:28 -0700
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To: Rob Shakir <robjs@google.com>
Cc: SPRING WG List <spring@ietf.org>
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Subject: Re: [spring] IPR Poll for draft-filsfils-spring-segment-routing-policy
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I'm not aware of any IPR that applies to this draft

Cheers,

Alex

On Wed, May 16, 2018, 8:20 AM Rob Shakir <robjs@google.com> wrote:

> Hi SPRING WG,
>
> In parallel to the call for adoption
> for draft-filsfils-spring-segment-routing-policy, we would like to poll for
> IPR.
>
> If you are aware of IPR that applies
> to draft-filsfils-spring-segment-routing-policy please respond to this
> email. If you are aware of IPR, please indicate whether it has been
> disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and 5378
> provide more details).
>
> If you are an *author or contributor* please respond to this email
> regardless of whether or not you're aware of any IPR. If you are not an
> author or contributor, please explicitly respond only if you are aware of
> IPR that has not yet been disclosed.
>
> This document will not advance into the working group until IPR
> confirmations have been received from all authors and contributors.
>
> Thanks,
> Bruno & Rob.
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>

--000000000000c7964a056c54c38a
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<div dir=3D"auto"><div>I&#39;m not aware of any IPR that applies to this dr=
aft</div><div dir=3D"auto"><br></div><div dir=3D"auto">Cheers,</div><div di=
r=3D"auto"><br></div><div dir=3D"auto">Alex<br><br><div class=3D"gmail_quot=
e" dir=3D"auto"><div dir=3D"ltr">On Wed, May 16, 2018, 8:20 AM Rob Shakir &=
lt;<a href=3D"mailto:robjs@google.com">robjs@google.com</a>&gt; wrote:<br><=
/div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-le=
ft:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">Hi SPRING WG,<div><br>=
</div><div>In parallel to the call for adoption for=C2=A0draft-filsfils-spr=
ing-segment-routing-policy, we would like to poll for IPR.</div><div><br></=
div><div>If you are aware of IPR that applies to=C2=A0draft-filsfils-spring=
-segment-routing-policy please respond to this email. If you are aware of I=
PR, please indicate whether it has been disclosed in accordance with IETF I=
PR rules (RFCs 3979, 4879, 3669 and 5378 provide more details).</div><div><=
br></div><div>If you are an <b>author or contributor</b>=C2=A0please respon=
d to this email regardless of whether or not you&#39;re aware of any IPR. I=
f you are not an author or contributor, please explicitly respond only if y=
ou are aware of IPR that has not yet been disclosed.</div><div><br></div><d=
iv>This document will not advance into the working group until IPR confirma=
tions have been received from all authors and contributors.</div><div><br><=
/div><div>Thanks,</div><div>Bruno &amp; Rob.</div></div>
_______________________________________________<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: "Acee Lindem (acee)" <acee@cisco.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
Thread-Topic: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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From: Gaurav Dawra <gdawra.ietf@gmail.com>
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To: Rob Shakir <robjs@google.com>
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Spring Chairs,

Speaking as SPRING Member who is operator and not a co-author.

I support adoption of this document as WG document.

Cheers

Gaurav

Sent from my iPhone

>=20
> =20
> From: spring <spring-bounces@ietf.org> on behalf of Rob Shakir <robjs@goog=
le.com>
> Date: Wednesday, May 16, 2018 at 11:21 AM
> To: SPRING WG List <spring@ietf.org>
> Subject: [spring] Working Group Adoption Call for draft-filsfils-spring-se=
gment-routing-policy
> =20
> Hi SPRING WG,
> =20
> This email initiates a two week call for working group adoption for draft-=
filsfils-spring-segment-routing-policy. Please indicate your support, or oth=
erwise, for adopting this draft as a working group item by 30th May 2018. We=
 are particularly interested in hearing from working group members that are n=
ot co-authors of this draft.
> =20
> As part of the discussions of adopting this draft into SPRING with the ADs=
 and chairs of other WGs, there are a number of requests to the authors.
> =20
> 1. Please clarify in the text traffic steering with "SR policy" and its re=
lationship to other traffic engineering functions. It seems to me that this w=
ork is generally describing how one selects and steers traffic into policies=
, rather than path calculation. Additional clarification of whether this is t=
he case (or not), would be welcome to ensure that the relationship with othe=
r work is clear. We would ask the authors to consider whether sections 14.1-=
14.4 are required scope of this document.
> =20
> 2.. Consider what the core content of this document is, and how it can be m=
ake as concise and clear as possible. There are some specific suggestions th=
at can be made here, but we would like to see this discussed with the workin=
g group.
> =20
> Additionally, there are currently 17 authors listed on this document. Plea=
se trim this to <=3D 5 front-page authors, utilising a "Contributors" sectio=
n if required for the others.. An approach to achieving this would be to lis=
t ~2 editors as the front-page authors.
> =20
> In parallel to this adoption call, I will send an IPR call for this docume=
nt. We will need all 17 authors to confirm their IPR position on this docume=
nt.
> =20
> Thanks,
> Bruno & Rob.
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring

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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Spring Chairs,<div><br></div><div>Speaking as SPRING Member who is operator and not a co-author.</div><div><br></div><div>I support adoption of this document as WG document.</div><div><br></div><div>Cheers</div><div><br></div><div>Gaurav<br><br><div id="AppleMailSignature">Sent from my iPhone</div><div><br><br></div><blockquote type="cite"><div class="WordSection1">
<p class="MsoNormal"><span style="font-size:16.0pt"><o:p>&nbsp;</o:p></span></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">spring &lt;<a href="mailto:spring-bounces@ietf.org">spring-bounces@ietf.org</a>&gt; on behalf of Rob Shakir &lt;<a href="mailto:robjs@google.com">robjs@google.com</a>&gt;<br>
<b>Date: </b>Wednesday, May 16, 2018 at 11:21 AM<br>
<b>To: </b>SPRING WG List &lt;<a href="mailto:spring@ietf.org">spring@ietf.org</a>&gt;<br>
<b>Subject: </b>[spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><a name="_MailOriginalBody">Hi SPRING WG,
<o:p></o:p></a></p>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody">This email initiates a two week call for working group adoption for&nbsp;draft-filsfils-spring-segment-routing-policy. Please indicate your support, or otherwise, for adopting
 this draft as a working group item by <b>30th May 2018</b>. We are particularly interested in hearing from working group members that are not co-authors of this draft.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody">As part of the discussions of adopting this draft into SPRING with the ADs and chairs of other WGs, there are a number of requests to the authors.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody">1. Please clarify in the text traffic steering with "SR policy" and its relationship to other traffic engineering functions. It seems to me that this work is generally
 describing how one selects and steers traffic into policies, rather than path calculation. Additional clarification of whether this is the case (or not), would be welcome to ensure that the relationship with other work is clear. We would ask the authors to
 consider whether sections 14.1-14.4 are required scope of this document.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody">2.. Consider what the core content of this document is, and how it can be make as concise and clear as possible. There are some specific suggestions that can be made
 here, but we would like to see this discussed with the working group.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody">Additionally, there are currently 17 authors listed on this document. Please trim this to &lt;= 5 front-page authors, utilising a "Contributors" section if required for
 the others.. An approach to achieving this would be to list ~2 editors as the front-page authors.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody">In parallel to this adoption call, I will send an IPR call for this document. We will need all 17 authors to confirm their IPR position on this document.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody">Thanks,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="mso-bookmark:_MailOriginalBody">Bruno &amp; Rob.<o:p></o:p></span></p>
</div>
</div>
</div>


</blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>spring mailing list</span><br><span><a href="mailto:spring@ietf.org">spring@ietf.org</a></span><br><span><a href="https://www.ietf.org/mailman/listinfo/spring">https://www.ietf.org/mailman/listinfo/spring</a></span><br></div></blockquote></div><style><!--
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From: Alex Bogdanov <bogdanov@google.com>
Date: Wed, 16 May 2018 09:12:14 -0700
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To: Gaurav Dawra <gdawra.ietf@gmail.com>
Cc: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/ON3NrXHQyzjaf4TFNTxDS8ftzT0>
Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Hello Chairs,

As a co-author, I support WG adoption

On Wed, May 16, 2018 at 9:00 AM Gaurav Dawra <gdawra.ietf@gmail.com> wrote:

> Spring Chairs,
>
> Speaking as SPRING Member who is operator and not a co-author.
>
> I support adoption of this document as WG document.
>
> Cheers
>
> Gaurav
>
> Sent from my iPhone
>
>
>
>
> *From: *spring <spring-bounces@ietf.org> on behalf of Rob Shakir <
> robjs@google.com>
> *Date: *Wednesday, May 16, 2018 at 11:21 AM
> *To: *SPRING WG List <spring@ietf.org>
> *Subject: *[spring] Working Group Adoption Call for
> draft-filsfils-spring-segment-routing-policy
>
>
>
> Hi SPRING WG,
>
>
>
> This email initiates a two week call for working group adoption
> for draft-filsfils-spring-segment-routing-policy. Please indicate your
> support, or otherwise, for adopting this draft as a working group item by *30th
> May 2018*. We are particularly interested in hearing from working group
> members that are not co-authors of this draft.
>
>
>
> As part of the discussions of adopting this draft into SPRING with the ADs
> and chairs of other WGs, there are a number of requests to the authors.
>
>
>
> 1. Please clarify in the text traffic steering with "SR policy" and its
> relationship to other traffic engineering functions. It seems to me that
> this work is generally describing how one selects and steers traffic into
> policies, rather than path calculation. Additional clarification of whether
> this is the case (or not), would be welcome to ensure that the relationship
> with other work is clear. We would ask the authors to consider whether
> sections 14.1-14.4 are required scope of this document.
>
>
>
> 2.. Consider what the core content of this document is, and how it can be
> make as concise and clear as possible. There are some specific suggestions
> that can be made here, but we would like to see this discussed with the
> working group.
>
>
>
> Additionally, there are currently 17 authors listed on this document.
> Please trim this to <= 5 front-page authors, utilising a "Contributors"
> section if required for the others.. An approach to achieving this would be
> to list ~2 editors as the front-page authors.
>
>
>
> In parallel to this adoption call, I will send an IPR call for this
> document. We will need all 17 authors to confirm their IPR position on this
> document.
>
>
>
> Thanks,
>
> Bruno & Rob.
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
-- 

-- Alex

Alex Bogdanov | Strategic NetEng | bogdanov@ <bogdanov@google.com> | Cell:
650-314-8196

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

<div dir=3D"ltr">Hello Chairs,<div><br></div><div>As a co-author, I support=
 WG adoption</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr">On =
Wed, May 16, 2018 at 9:00 AM Gaurav Dawra &lt;<a href=3D"mailto:gdawra.ietf=
@gmail.com">gdawra.ietf@gmail.com</a>&gt; wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex"><div dir=3D"auto">Spring Chairs,<div><br></div><div>Speaking =
as SPRING Member who is operator and not a co-author.</div><div><br></div><=
div>I support adoption of this document as WG document.</div><div><br></div=
><div>Cheers</div><div><br></div><div>Gaurav<br><br><div id=3D"m_-118594148=
5720269699AppleMailSignature">Sent from my iPhone</div></div></div><div dir=
=3D"auto"><div><div><br><br></div><blockquote type=3D"cite"><div class=3D"m=
_-1185941485720269699WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:16.0pt"><u></u>=C2=A0<u></u=
></span></p>
<div style=3D"border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><b><span style=3D"font-si=
ze:12.0pt;color:black">From:
</span></b><span style=3D"font-size:12.0pt;color:black">spring &lt;<a href=
=3D"mailto:spring-bounces@ietf.org" target=3D"_blank">spring-bounces@ietf.o=
rg</a>&gt; on behalf of Rob Shakir &lt;<a href=3D"mailto:robjs@google.com" =
target=3D"_blank">robjs@google.com</a>&gt;<br>
<b>Date: </b>Wednesday, May 16, 2018 at 11:21 AM<br>
<b>To: </b>SPRING WG List &lt;<a href=3D"mailto:spring@ietf.org" target=3D"=
_blank">spring@ietf.org</a>&gt;<br>
<b>Subject: </b>[spring] Working Group Adoption Call for draft-filsfils-spr=
ing-segment-routing-policy<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><a name=3D"m_-11859414857=
20269699__MailOriginalBody">Hi SPRING WG,
<u></u><u></u></a></p>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span><u></u>=C2=A0<u></u=
></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span>This email initiate=
s a two week call for working group adoption for=C2=A0draft-filsfils-spring=
-segment-routing-policy. Please indicate your support, or otherwise, for ad=
opting
 this draft as a working group item by <b>30th May 2018</b>. We are particu=
larly interested in hearing from working group members that are not co-auth=
ors of this draft.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span><u></u>=C2=A0<u></u=
></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span>As part of the disc=
ussions of adopting this draft into SPRING with the ADs and chairs of other=
 WGs, there are a number of requests to the authors.<u></u><u></u></span></=
p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span><u></u>=C2=A0<u></u=
></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span>1. Please clarify i=
n the text traffic steering with &quot;SR policy&quot; and its relationship=
 to other traffic engineering functions. It seems to me that this work is g=
enerally
 describing how one selects and steers traffic into policies, rather than p=
ath calculation. Additional clarification of whether this is the case (or n=
ot), would be welcome to ensure that the relationship with other work is cl=
ear. We would ask the authors to
 consider whether sections 14.1-14.4 are required scope of this document.<u=
></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span><u></u>=C2=A0<u></u=
></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span>2.. Consider what t=
he core content of this document is, and how it can be make as concise and =
clear as possible. There are some specific suggestions that can be made
 here, but we would like to see this discussed with the working group.<u></=
u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span><u></u>=C2=A0<u></u=
></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span>Additionally, there=
 are currently 17 authors listed on this document. Please trim this to &lt;=
=3D 5 front-page authors, utilising a &quot;Contributors&quot; section if r=
equired for
 the others.. An approach to achieving this would be to list ~2 editors as =
the front-page authors.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span><u></u>=C2=A0<u></u=
></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span>In parallel to this=
 adoption call, I will send an IPR call for this document. We will need all=
 17 authors to confirm their IPR position on this document.<u></u><u></u></=
span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span><u></u>=C2=A0<u></u=
></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span>Thanks,<u></u><u></=
u></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span>Bruno &amp; Rob.<u>=
</u><u></u></span></p>
</div>
</div>
</div>


</blockquote><blockquote type=3D"cite"><div><span>_________________________=
______________________</span><br><span>spring mailing list</span><br><span>=
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a></s=
pan><br><span><a href=3D"https://www.ietf.org/mailman/listinfo/spring" targ=
et=3D"_blank">https://www.ietf.org/mailman/listinfo/spring</a></span><br></=
div></blockquote></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>-- <br><div dir=3D"ltr" class=3D"gmail_signature" data-s=
martmail=3D"gmail_signature"><div dir=3D"ltr"><div><br class=3D"inbox-inbox=
-inbox-inbox-Apple-interchange-newline">-- Alex</div><div dir=3D"ltr"><span=
><br><font color=3D"#000000">Alex Bogdanov |</font></span><font color=3D"#0=
00000">=C2=A0Strategic NetEng |=C2=A0<a href=3D"mailto:bogdanov@google.com"=
>bogdanov@</a>=C2=A0| Cell: 650</font><span style=3D"font-size:small;color:=
rgb(0,0,0);font-family:sans-serif;line-height:19.5px">-314-8196</span></div=
></div></div>

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CC: SPRING WG List <spring@ietf.org>, "draft-filsfils-spring-segment-routing-policy@ietf.org" <draft-filsfils-spring-segment-routing-policy@ietf.org>
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CC: SPRING WG List <spring@ietf.org>, "draft-filsfils-spring-segment-routing-policy@ietf.org" <draft-filsfils-spring-segment-routing-policy@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/iZ4Q_Opar2xlYX15a5cMvAUOR28>
Subject: Re: [spring] IPR Poll for draft-filsfils-spring-segment-routing-policy
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Date: Wed, 16 May 2018 18:28:26 +0200
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
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Thread-Topic: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Yes/support

 

Cheers,

Jeff

From: spring <spring-bounces@ietf.org> on behalf of Rob Shakir <robjs@google.com>
Date: Wednesday, May 16, 2018 at 17:20
To: SPRING WG List <spring@ietf.org>
Subject: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy

 

Hi SPRING WG,

 

This email initiates a two week call for working group adoption for draft-filsfils-spring-segment-routing-policy. Please indicate your support, or otherwise, for adopting this draft as a working group item by 30th May 2018. We are particularly interested in hearing from working group members that are not co-authors of this draft.

 

As part of the discussions of adopting this draft into SPRING with the ADs and chairs of other WGs, there are a number of requests to the authors.

 

1. Please clarify in the text traffic steering with "SR policy" and its relationship to other traffic engineering functions. It seems to me that this work is generally describing how one selects and steers traffic into policies, rather than path calculation. Additional clarification of whether this is the case (or not), would be welcome to ensure that the relationship with other work is clear. We would ask the authors to consider whether sections 14.1-14.4 are required scope of this document.

 

2.. Consider what the core content of this document is, and how it can be make as concise and clear as possible. There are some specific suggestions that can be made here, but we would like to see this discussed with the working group.

 

Additionally, there are currently 17 authors listed on this document. Please trim this to <= 5 front-page authors, utilising a "Contributors" section if required for the others.. An approach to achieving this would be to list ~2 editors as the front-page authors.

 

In parallel to this adoption call, I will send an IPR call for this document. We will need all 17 authors to confirm their IPR position on this document.

 

Thanks,

Bruno & Rob.

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


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--></style></head><body lang=3DEN-US link=3D"#0563C1" vlink=3D"#954F72"><div clas=
s=3DWordSection1><p class=3DMsoNormal>Yes/support<o:p></o:p></p><p class=3DMsoNorm=
al><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal><span style=3D'color:black'>Ch=
eers,<o:p></o:p></span></p></div><p class=3DMsoNormal><span style=3D'color:black=
'>Jeff</span><o:p></o:p></p><div style=3D'border:none;border-top:solid #B5C4DF=
 1.0pt;padding:3.0pt 0in 0in 0in'><p class=3DMsoNormal><b><span style=3D'font-si=
ze:12.0pt;color:black'>From: </span></b><span style=3D'font-size:12.0pt;color:=
black'>spring &lt;spring-bounces@ietf.org&gt; on behalf of Rob Shakir &lt;ro=
bjs@google.com&gt;<br><b>Date: </b>Wednesday, May 16, 2018 at 17:20<br><b>To=
: </b>SPRING WG List &lt;spring@ietf.org&gt;<br><b>Subject: </b>[spring] Wor=
king Group Adoption Call for draft-filsfils-spring-segment-routing-policy<o:=
p></o:p></span></p></div><div><p class=3DMsoNormal><o:p>&nbsp;</o:p></p></div>=
<div><p class=3DMsoNormal><a name=3D"_MailOriginalBody">Hi SPRING WG,<o:p></o:p>=
</a></p><div><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOriginalBody'=
><o:p>&nbsp;</o:p></span></p></div><div><p class=3DMsoNormal><span style=3D'mso-=
bookmark:_MailOriginalBody'>This email initiates a two week call for working=
 group adoption for&nbsp;draft-filsfils-spring-segment-routing-policy. Pleas=
e indicate your support, or otherwise, for adopting this draft as a working =
group item by <b>30th May 2018</b>. We are particularly interested in hearin=
g from working group members that are not co-authors of this draft.<o:p></o:=
p></span></p></div><div><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOr=
iginalBody'><o:p>&nbsp;</o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'mso-bookmark:_MailOriginalBody'>As part of the discussions of adoptin=
g this draft into SPRING with the ADs and chairs of other WGs, there are a n=
umber of requests to the authors.<o:p></o:p></span></p></div><div><p class=3DM=
soNormal><span style=3D'mso-bookmark:_MailOriginalBody'><o:p>&nbsp;</o:p></spa=
n></p></div><div><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOriginalB=
ody'>1. Please clarify in the text traffic steering with &quot;SR policy&quo=
t; and its relationship to other traffic engineering functions. It seems to =
me that this work is generally describing how one selects and steers traffic=
 into policies, rather than path calculation. Additional clarification of wh=
ether this is the case (or not), would be welcome to ensure that the relatio=
nship with other work is clear. We would ask the authors to consider whether=
 sections 14.1-14.4 are required scope of this document.<o:p></o:p></span></=
p></div><div><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOriginalBody'=
><o:p>&nbsp;</o:p></span></p></div><div><p class=3DMsoNormal><span style=3D'mso-=
bookmark:_MailOriginalBody'>2.. Consider what the core content of this docum=
ent is, and how it can be make as concise and clear as possible. There are s=
ome specific suggestions that can be made here, but we would like to see thi=
s discussed with the working group.<o:p></o:p></span></p></div><div><p class=
=3DMsoNormal><span style=3D'mso-bookmark:_MailOriginalBody'><o:p>&nbsp;</o:p></s=
pan></p></div><div><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOrigina=
lBody'>Additionally, there are currently 17 authors listed on this document.=
 Please trim this to &lt;=3D 5 front-page authors, utilising a &quot;Contribut=
ors&quot; section if required for the others.. An approach to achieving this=
 would be to list ~2 editors as the front-page authors.<o:p></o:p></span></p=
></div><div><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOriginalBody'>=
<o:p>&nbsp;</o:p></span></p></div><div><p class=3DMsoNormal><span style=3D'mso-b=
ookmark:_MailOriginalBody'>In parallel to this adoption call, I will send an=
 IPR call for this document. We will need all 17 authors to confirm their IP=
R position on this document.<o:p></o:p></span></p></div><div><p class=3DMsoNor=
mal><span style=3D'mso-bookmark:_MailOriginalBody'><o:p>&nbsp;</o:p></span></p=
></div><div><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOriginalBody'>=
Thanks,<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span style=3D'mso-=
bookmark:_MailOriginalBody'>Bruno &amp; Rob.<o:p></o:p></span></p></div></di=
v><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOriginalBody'>__________=
_____________________________________ spring mailing list spring@ietf.org ht=
tps://www.ietf.org/mailman/listinfo/spring </span><o:p></o:p></p></div></bod=
y></html>

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From: "Krishna Muddenahally Ananthamurthy (kriswamy)" <kriswamy@cisco.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
Thread-Topic: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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From: "Dhanendra Jain (dhjain)" <dhjain@cisco.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
Thread-Topic: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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From: stefano previdi <stefano@previdi.net>
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Date: Wed, 16 May 2018 19:04:35 +0200
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To: Rob Shakir <robjs@google.com>
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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as a non-co-author, I support the adoption of this draft.

s.


> On May 16, 2018, at 5:20 PM, Rob Shakir <robjs@google.com> wrote:
>=20
> Hi SPRING WG,
>=20
> This email initiates a two week call for working group adoption for =
draft-filsfils-spring-segment-routing-policy. Please indicate your =
support, or otherwise, for adopting this draft as a working group item =
by 30th May 2018. We are particularly interested in hearing from working =
group members that are not co-authors of this draft.
>=20
> As part of the discussions of adopting this draft into SPRING with the =
ADs and chairs of other WGs, there are a number of requests to the =
authors.
>=20
> 1. Please clarify in the text traffic steering with "SR policy" and =
its relationship to other traffic engineering functions. It seems to me =
that this work is generally describing how one selects and steers =
traffic into policies, rather than path calculation. Additional =
clarification of whether this is the case (or not), would be welcome to =
ensure that the relationship with other work is clear. We would ask the =
authors to consider whether sections 14.1-14.4 are required scope of =
this document.
>=20
> 2.. Consider what the core content of this document is, and how it can =
be make as concise and clear as possible. There are some specific =
suggestions that can be made here, but we would like to see this =
discussed with the working group.
>=20
> Additionally, there are currently 17 authors listed on this document. =
Please trim this to <=3D 5 front-page authors, utilising a =
"Contributors" section if required for the others.. An approach to =
achieving this would be to list ~2 editors as the front-page authors.
>=20
> In parallel to this adoption call, I will send an IPR call for this =
document. We will need all 17 authors to confirm their IPR position on =
this document.
>=20
> Thanks,
> Bruno & Rob.
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring


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From: Paul Mattes <pamattes@microsoft.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
Thread-Topic: [spring] IPR Poll for draft-filsfils-spring-segment-routing-policy
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Subject: Re: [spring] IPR Poll for draft-filsfils-spring-segment-routing-policy
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/ilCnOUVhSaNJine20FLpkKF5R4k>
Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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From: Gaurav Dawra <gdawra.ietf@gmail.com>
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Hi Martin,

Apologies from my end we had multiple discussions amongst authors.

For below comment - I will remove the citation of the really open paper. =
Will update in next rev:

Section will read like this now:

A flowlet is defined as a burst of packets from the same flow
followed by an idle interval.

With some ability to choose paths on the host, one may go from per-
flow load-sharing in the network to per-packet or per-flowlet.  The
host may select different segment routing instructions either per
packet, or per flowlet, and route them over different paths.  This
allows for solving the "elephant flow" problem in the data-center and
avoiding link imbalances.
=20
Cheers,

Gaurav

> On Apr 9, 2018, at 8:02 AM, Martin Stiemerling <mls.ietf@gmail.com> =
wrote:
>=20
> Hi Gaurav,
>=20
> Am 01.03.18 um 16:01 schrieb Gaurav Dawra:
>> Hey Martin,
>> Seeking your feedback here. Regarding Section 7.1, The intent of the =
document is to describe one suggestive way and do not attempt to =
standardize any suggested mechanisms based considering the Informational =
nature. Authors do not attempt to fully solve =E2=80=93 but to indicate =
how SR helps towards this.The details of how the hosts figure out what =
paths to take through the network such that the TCP and application are =
not affected is outside the scope of this document.
>> Would you prefer to add perhaps - =E2=80=9Cdetails outside the =
scope=E2=80=9D or =E2=80=9Cthis is one of the ways=E2=80=9D or something =
else?
>=20
>=20
> Since the cited paper is really old and there is no up-to-date proof =
of any working implementation with real Internet traffic: Please remove =
this part.
>=20
> This will require a lot of theoretical work, discussions the transport =
community, discussions with operating system vendors and testing in the =
wild open Internet.
>=20
> Kind regards,
>=20
>  Martin


--Apple-Mail=_CE7E4342-3662-4A01-845D-CA8C138344BE
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><div =
dir=3D"auto" style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
line-break: after-white-space;" class=3D""><font size=3D"4" class=3D"">Hi =
Martin,</font><div class=3D""><font size=3D"4" class=3D""><br =
class=3D""></font></div><div class=3D""><div class=3D""><font size=3D"4" =
class=3D"">Apologies from my end we had multiple discussions amongst =
authors.</font></div></div><div class=3D""><font size=3D"4" class=3D""><br=
 class=3D""></font></div><div class=3D""><font size=3D"4" class=3D"">For =
below comment - I will remove the citation of the really open paper. =
Will update in next rev:</font></div><div class=3D""><font size=3D"4" =
class=3D""><br class=3D""></font></div><div class=3D""><font size=3D"4" =
class=3D"">Section will read like this now:</font></div><div =
class=3D""><font size=3D"4" class=3D""><br class=3D""></font></div><div =
class=3D""><pre style=3D"margin: 0cm 0cm 0.0001pt; break-before: page; =
font-variant-ligatures: normal; orphans: 2; widows: 2;" class=3D""><font =
face=3D"Georgia" size=3D"4" class=3D""><i class=3D"">A flowlet is =
defined as a burst of packets from the same flow<o:p =
class=3D""></o:p></i></font></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><font face=3D"Georgia" size=3D"4" class=3D""><i =
class=3D"">followed by an idle interval.</i></font></pre><pre =
style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><font face=3D"Georgia" =
size=3D"4" class=3D""><i class=3D""><br class=3D""></i></font></pre><pre =
style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><span style=3D"font-family:=
 Georgia; font-size: large;" class=3D""><i class=3D"">With some ability =
to choose paths on the host, one may go from per-</i></span></pre><pre =
style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><font face=3D"Georgia" =
size=3D"4" class=3D""><i class=3D"">flow load-sharing in the network to =
per-packet or per-flowlet.&nbsp; The<o:p =
class=3D""></o:p></i></font></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><font face=3D"Georgia" size=3D"4" class=3D""><i =
class=3D"">host may select different segment routing instructions either =
per<o:p class=3D""></o:p></i></font></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><font face=3D"Georgia" size=3D"4" class=3D""><i =
class=3D"">packet, or per flowlet, and route them over different =
paths.&nbsp; This<o:p class=3D""></o:p></i></font></pre><pre =
style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><font face=3D"Georgia" =
size=3D"4" class=3D""><i class=3D"">allows for solving the "elephant =
flow" problem in the data-center and<o:p =
class=3D""></o:p></i></font></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><font face=3D"Georgia" size=3D"4" class=3D""><i =
class=3D"">avoiding link imbalances.<o:p =
class=3D""></o:p></i></font></pre><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt;" class=3D""><font size=3D"4" =
class=3D"">&nbsp;</font></div></div><div style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><font size=3D"4" class=3D"">Cheers,</font></div><div=
 style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><font size=3D"4" =
class=3D""><br class=3D""></font></div><div style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><font size=3D"4" =
class=3D"">Gaurav</font></div><div><font size=3D"4" class=3D""><br =
class=3D""></font><blockquote type=3D"cite" class=3D""><div =
class=3D""><font size=3D"4" class=3D"">On Apr 9, 2018, at 8:02 AM, =
Martin Stiemerling &lt;<a href=3D"mailto:mls.ietf@gmail.com" =
class=3D"">mls.ietf@gmail.com</a>&gt; wrote:</font></div><font size=3D"4" =
class=3D""><br class=3D"Apple-interchange-newline"></font><div =
class=3D""><div class=3D""><font size=3D"4" class=3D"">Hi Gaurav,<br =
class=3D""><br class=3D"">Am 01.03.18 um 16:01 schrieb Gaurav Dawra:<br =
class=3D""></font><blockquote type=3D"cite" class=3D""><font size=3D"4" =
class=3D"">Hey Martin,<br class=3D"">Seeking your feedback here. =
Regarding Section&nbsp;7.1, The intent of the document is to describe =
one suggestive way and do not attempt to standardize any suggested =
mechanisms based considering the Informational nature. Authors do not =
attempt to fully solve =E2=80=93 but to indicate how SR helps towards =
this.The details of how the hosts figure out what paths to take through =
the network such that the TCP and application are not affected is =
outside the scope of this document.<br class=3D"">Would you prefer to =
add perhaps - =E2=80=9Cdetails outside the scope=E2=80=9D or =E2=80=9Cthis=
 is one of the ways=E2=80=9D or something else?<br =
class=3D""></font></blockquote><font size=3D"4" class=3D""><br =
class=3D""><br class=3D"">Since the cited paper is really old and there =
is no up-to-date proof of any working implementation with real Internet =
traffic: Please remove this part.<br class=3D""><br class=3D"">This will =
require a lot of theoretical work, discussions the transport community, =
discussions with operating system vendors and testing in the wild open =
Internet.<br class=3D""><br class=3D"">Kind regards,<br class=3D""><br =
class=3D""> &nbsp;Martin<br =
class=3D""></font></div></div></blockquote></div><br =
class=3D""></div></div></body></html>=

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Hi Martin,

Apologies from my end we had few internal authors conversations on the =
points you have raised.

Please find below my response. I will be happy to discuss further, if =
needed.

<Gaurav> inline...

> On Apr 9, 2018, at 7:58 AM, Martin Stiemerling <mls.ietf@gmail.com> =
wrote:
>=20
> Hi Gaurav,
>=20
> This got lost on my end, sorry for this. The filter just moved these =
messages out of my sight... :-/
>=20
> Am 15.02.18 um 05:47 schrieb Gaurav Dawra:
>> Hey Martin,
>> Sorry for late reply. Please see some comments inline[Gaurav]
>>> On Jan 9, 2018, at 2:25 PM, Martin Stiemerling <mls.ietf@gmail.com =
<mailto:mls.ietf@gmail.com>> wrote:
>>>=20
>>> Hi all,
>>>=20
>>> I've reviewed this document as part of the transport area review =
team's ongoing effort to review key IETF documents. These comments were =
written primarily for the transport area directors, but are copied to =
the document's authors for their information and to allow them to =
address any issues raised. When done at the time of IETF Last Call, the =
authors should consider this review together with any other last-call =
comments they receive. Please always CC tsv-art@=E2=80=A6 if you reply =
to or forward this review.
>>>=20
>>> Summary:
>>> This draft has serious issues in Section 7.1, 7.2 and in one part of =
Section3, described in the review, and needs to be rethought. The other =
sections are good AFAIK.
>>>=20
>>>=20
>>> Technicals:
>>> The overall draft looks ok, but the three points below look strange =
and need a fix before publication IMHO:
>>>=20
>>> Both Sections, 7.1. and 7.2., are describing ideas, but not well =
proven funcationality and not even safe to use functionality. Both are =
some sort discussing that different paths in the network could be used =
by the end host traffic. This sounds pretty much like the Path Aware =
Networking Proposed Research Group (https://irtf.org/panrg) and hints to =
the fact that there is no commonly understand and accepted engineering =
solution in this space.
>>>=20
>>> Section 7.1:
>>> [KANDULA04] is a really old reference that hasn't been followed up =
in recent times and even worse there is no evidence that this is going =
to work good enough or stable enough under real Internet traffic. =
Additionally, it is more than unclear how any modern TCP implementation =
will react to this
>> [Gaurav] Will get back on this.
>=20
> I will reply to the other email dicussing this.
<Gaurav> I have replied to other thread.
>=20
>>>=20
>>> Section 7.2:
>>> This section describes an idea without detailing too much about any =
further aspects. Further it changes the commonly accepted notion of what =
an end host can do with the network. At best this would require a good =
definition of what an end host in your setting is, e.g., a highly =
modified piece of (at least) software that usually not found in OS =
availble on the market (yet?)
>>> Further communicating instantaneous path characteristics to a =
central point is potentially a bad idea, as the data is already outdated =
when reported by any node.
>> [Gaurav] I believe Authors are trying to highlight that Host which is =
defined in =
(https://tools.ietf.org/html/draft-ietf-spring-segment-routing-15) can =
influence the traffic based on the Calculations locally or jointly with =
the controller. Implementations can decide how much Centralized -vs- =
localized control is allowed at Host based on performance data =
collection.
>=20
> Performance data collection (monitoring?) isn't crucial when it comes =
to timely (actually real-time) reaction. However, this section isn't =
just about performance data collection as it is about "Performance-aware =
routing" this seems to try to interact in real-time with the network =
behavior of TCP. This isn't even close to acceptable.
>=20
> I would be ok to say that it is useful to collect performance data for =
offline analysis and improvement of the data network. However, this is =
at completely different magnitues of time scales.
>=20
> I would recommend to remove the TCP part from this section entirely.
<Gaurav>Ack, will update in next rev:

Section will read like this:

;
=20
   Knowing the path associated with flows/packets, the end host may
   deduce certain characteristics of the path on its own, and
   additionally use the information supplied with path information
   pushed from the controller or received via pull request.  The host
   may further share its path observations with the centralized agent,
   so that the latter may keep up-to-date network health map to assist
   other hosts with this information.
=20
   For example, an application A.1 at HostA may pin a flow destined
   to HostZ via Spine node Node5 using label stack {16005, 16011}. The
   application A.1 may collect information on packet loss, deduced from
   Other offline mechanisms.  [There are some pingMesh mechanisms which=20=

   Can be used here]
=20
    Through these mechanisms information to a centralized agent, e.g.
   after a flow completes, or periodically for longer lived flows.
   Next, using both local and/or global performance data, application
   A.1 as well as other applications sharing the same resources in the
   DC fabric may pick up the best path for the new flow, or update an
   existing path (e.g.: when informed of congestion on an existing
   path).
=20
;

>=20
>=20
>>>=20
>>> Section 3, 3rd bullet point:
>>> It is the foundation of TCP that the network is regarded as a black =
box and that you infer from the transmission of packets what the current =
state of the network path is. Inferring network path metrics (you =
mention SRTT, MSS, CWND ) is a bad idea, as this would required that all =
paths exhibit this and if not what is going to happen?
>>> It could be an interesting research field to change many points in =
TCP's behavior, but this once again points to the fact that this not the =
IETF works but IRTF or elsewhere.
>> [Gaurav] Martin, Authors are trying to suggest that TCP is rightly =
treating Network as Black Box. Authors are implying per path performance =
metrics as not cached. Is there some change in text you are suggesting?
>=20
>=20
> I would recommend to remove the 3rd bullet point completey. TCP isn't =
the place to remember "good" or "bad" paths. This is something the =
network could decide, e.g., rerouting TCP flows within the network or =
changing the forwarding path in the network for particular flows (if it =
is not routed).

<Gaurav> Ack, after discussion, we will remove the Section 3 - 3rd =
bullet point. Will update in next rev - coming shortly.

>=20
> Kind regards,
>=20
>  Martin
>=20


--Apple-Mail=_E5B1CE7B-CD2A-4A43-AB29-F697C6141D8D
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><div =
style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; line-break: =
after-white-space;" dir=3D"auto" class=3D""><font size=3D"4" class=3D"">Hi=
 Martin,</font><div class=3D""><font size=3D"4" class=3D""><br =
class=3D""></font></div><div class=3D""><font size=3D"4" =
class=3D"">Apologies from my end we had few internal authors =
conversations on the points you have raised.</font></div><div =
class=3D""><font size=3D"4" class=3D""><br class=3D""></font></div><div =
class=3D""><font size=3D"4" class=3D"">Please find below my response. I =
will be happy to discuss further, if needed.</font></div><div =
class=3D""><font size=3D"4" class=3D""><br class=3D""></font></div><div =
class=3D""><font size=3D"4" class=3D"">&lt;Gaurav&gt; inline...<br =
class=3D""></font><div><font size=3D"4" class=3D""><br =
class=3D""></font><blockquote type=3D"cite" class=3D""><div =
class=3D""><font size=3D"4" class=3D"">On Apr 9, 2018, at 7:58 AM, =
Martin Stiemerling &lt;<a href=3D"mailto:mls.ietf@gmail.com" =
class=3D"">mls.ietf@gmail.com</a>&gt; wrote:</font></div><font size=3D"4" =
class=3D""><br class=3D"Apple-interchange-newline"></font><div =
class=3D""><div class=3D""><font size=3D"4" class=3D"">Hi Gaurav,<br =
class=3D""><br class=3D"">This got lost on my end, sorry for this. The =
filter just moved these messages out of my sight... :-/<br class=3D""><br =
class=3D"">Am 15.02.18 um 05:47 schrieb Gaurav Dawra:<br =
class=3D""></font><blockquote type=3D"cite" class=3D""><font size=3D"4" =
class=3D"">Hey Martin,<br class=3D"">Sorry for late reply. Please see =
some comments inline[Gaurav]<br class=3D""></font><blockquote =
type=3D"cite" class=3D""><font size=3D"4" class=3D"">On Jan 9, 2018, at =
2:25 PM, Martin Stiemerling &lt;<a href=3D"mailto:mls.ietf@gmail.com" =
class=3D"">mls.ietf@gmail.com</a> &lt;<a =
href=3D"mailto:mls.ietf@gmail.com" =
class=3D"">mailto:mls.ietf@gmail.com</a>&gt;&gt; wrote:<br class=3D""><br =
class=3D"">Hi all,<br class=3D""><br class=3D"">I've reviewed this =
document as part of the transport area review team's ongoing effort to =
review key IETF documents. These comments were written primarily for the =
transport area directors, but are copied to the document's authors for =
their information and to allow them to address any issues raised. When =
done at the time of IETF Last Call, the authors should consider this =
review together with any other last-call comments they receive. Please =
always CC tsv-art@=E2=80=A6 if you reply to or forward this review.<br =
class=3D""><br class=3D"">Summary:<br class=3D"">This draft has serious =
issues in Section 7.1, 7.2 and in one part of Section3, described in the =
review, and needs to be rethought. The other sections are good AFAIK.<br =
class=3D""><br class=3D""><br class=3D"">Technicals:<br class=3D"">The =
overall draft looks ok, but the three points below look strange and need =
a fix before publication IMHO:<br class=3D""><br class=3D"">Both =
Sections, 7.1. and 7.2., are describing ideas, but not well proven =
funcationality and not even safe to use functionality. Both are some =
sort discussing that different paths in the network could be used by the =
end host traffic. This sounds pretty much like the Path Aware Networking =
Proposed Research Group (<a href=3D"https://irtf.org/panrg" =
class=3D"">https://irtf.org/panrg</a>) and hints to the fact that there =
is no commonly understand and accepted engineering solution in this =
space.<br class=3D""><br class=3D"">Section 7.1:<br class=3D"">[KANDULA04]=
 is a really old reference that hasn't been followed up in recent times =
and even worse there is no evidence that this is going to work good =
enough or stable enough under real Internet traffic. Additionally, it is =
more than unclear how any modern TCP implementation will react to =
this<br class=3D""></font></blockquote><font size=3D"4" =
class=3D"">[Gaurav] Will get back on this.<br =
class=3D""></font></blockquote><font size=3D"4" class=3D""><br =
class=3D"">I will reply to the other email dicussing this.<br =
class=3D""></font></div></div></blockquote><font size=3D"4" =
class=3D"">&lt;Gaurav&gt; I have replied to other thread.<br =
class=3D""></font><blockquote type=3D"cite" class=3D""><div =
class=3D""><div class=3D""><font size=3D"4" class=3D""><br =
class=3D""></font><blockquote type=3D"cite" class=3D""><blockquote =
type=3D"cite" class=3D""><font size=3D"4" class=3D""><br =
class=3D"">Section 7.2:<br class=3D"">This section describes an idea =
without detailing too much about any further aspects. Further it changes =
the commonly accepted notion of what an end host can do with the =
network. At best this would require a good definition of what an end =
host in your setting is, e.g., a highly modified piece of (at least) =
software that usually not found in OS availble on the market (yet?)<br =
class=3D"">Further communicating instantaneous path characteristics to a =
central point is potentially a bad idea, as the data is already outdated =
when reported by any node.<br class=3D""></font></blockquote><font =
size=3D"4" class=3D"">[Gaurav] I believe Authors are trying to highlight =
that Host which is defined in (<a =
href=3D"https://tools.ietf.org/html/draft-ietf-spring-segment-routing-15" =
class=3D"">https://tools.ietf.org/html/draft-ietf-spring-segment-routing-1=
5</a>) can influence the traffic based on the Calculations locally or =
jointly with the controller. Implementations can decide how much =
Centralized -vs- localized control is allowed at Host based on =
performance data collection.<br class=3D""></font></blockquote><font =
size=3D"4" class=3D""><br class=3D"">Performance data collection =
(monitoring?) isn't crucial when it comes to timely (actually real-time) =
reaction. However, this section isn't just about performance data =
collection as it is about "Performance-aware routing" this seems to try =
to interact in real-time with the network behavior of TCP. This isn't =
even close to acceptable.<br class=3D""><br class=3D"">I would be ok to =
say that it is useful to collect performance data for offline analysis =
and improvement of the data network. However, this is at completely =
different magnitues of time scales.<br class=3D""><br class=3D"">I would =
recommend to remove the TCP part from this section entirely.<br =
class=3D""></font></div></div></blockquote><div><font size=3D"4" =
class=3D"">&lt;Gaurav&gt;Ack, will update in next =
rev:</font></div><div><font size=3D"4" class=3D""><br =
class=3D""></font></div><div><font size=3D"4" class=3D"">Section will =
read like this:</font></div><div><font size=3D"4" class=3D""><br =
class=3D""></font></div><div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt;" class=3D""><font size=3D"4" class=3D"">;<o:p =
class=3D""></o:p></font></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt;" class=3D""><o:p class=3D""><font size=3D"4" =
class=3D"">&nbsp;</font></o:p></div></div><div class=3D""><pre =
style=3D"margin: 0cm 0cm 0.0001pt; break-before: page; =
font-variant-ligatures: normal; orphans: 2; widows: 2;" class=3D""><i =
class=3D""><font face=3D"Georgia" style=3D"font-size: 18px;" =
class=3D"">&nbsp;&nbsp; Knowing the path associated with flows/packets, =
the end host may<o:p class=3D""></o:p></font></i></pre><pre =
style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font =
face=3D"Georgia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; =
deduce certain characteristics of the path on its own, and<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; additionally use the =
information supplied with path information<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; pushed from the =
controller or received via pull request.&nbsp; The host<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; may further share its =
path observations with the centralized agent,<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; so that the latter =
may keep up-to-date network health map to assist<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; other hosts with this =
information.<o:p class=3D""></o:p></font></i></pre><pre style=3D"margin: =
0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;</font></i></pre><pre =
style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font =
face=3D"Georgia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; For =
example, an application A.1 at HostA may pin a flow destined<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; to HostZ via Spine =
node Node5 using label stack {16005, 16011}. The<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><font face=3D"Georgia" size=3D"4" class=3D""><i =
class=3D"">&nbsp;&nbsp; application A.1 may collect information on =
packet loss, deduced from</i><o:p class=3D""></o:p></font></pre><pre =
style=3D"margin: 0cm 0cm 0.0001pt; break-before: page; =
font-variant-ligatures: normal; orphans: 2; widows: 2;" class=3D""><font =
face=3D"Georgia" size=3D"4" class=3D""><i class=3D"">&nbsp;&nbsp; Other =
offline mechanisms. &nbsp;[There are some pingMesh mechanisms which =
</i><o:p class=3D""></o:p></font></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt; break-before: page; font-variant-ligatures: normal; orphans: =
2; widows: 2;" class=3D""><font face=3D"Georgia" size=3D"4" class=3D""><i =
class=3D"">&nbsp;&nbsp;&nbsp;Can be used here]</i><o:p =
class=3D""></o:p></font></pre><pre style=3D"margin: 0cm 0cm 0.0001pt; =
break-before: page; font-variant-ligatures: normal; orphans: 2; widows: =
2;" class=3D""><o:p class=3D""><font face=3D"Georgia" style=3D"font-size: =
18px;" class=3D"">&nbsp;</font></o:p></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt; break-before: page; font-variant-ligatures: normal; orphans: =
2; widows: 2;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp;&nbsp; Through these =
mechanisms information to a centralized agent, e.g.<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; after a flow =
completes, or periodically for longer lived flows.<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; Next, using both =
local and/or global performance data, application<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; A.1 as well as other =
applications sharing the same resources in the<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; DC fabric may pick up =
the best path for the new flow, or update an<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; existing path (e.g.: =
when informed of congestion on an existing<o:p =
class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm =
0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" =
style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; path).<o:p =
class=3D""></o:p></font></i></pre><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt;" class=3D""><o:p class=3D""><font size=3D"4" =
class=3D"">&nbsp;</font></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><font size=3D"4" =
class=3D"">;</font></div></div></div></div><div><font size=3D"4" =
class=3D""><br class=3D""></font></div><blockquote type=3D"cite" =
class=3D""><div class=3D""><div class=3D""><font size=3D"4" class=3D""><br=
 class=3D""><br class=3D""></font><blockquote type=3D"cite" =
class=3D""><blockquote type=3D"cite" class=3D""><font size=3D"4" =
class=3D""><br class=3D"">Section 3, 3rd bullet point:<br class=3D"">It =
is the foundation of TCP that the network is regarded as a black box and =
that you infer from the transmission of packets what the current state =
of the network path is. Inferring network path metrics (you mention =
SRTT, MSS, CWND ) is a bad idea, as this would required that all paths =
exhibit this and if not what is going to happen?<br class=3D"">It could =
be an interesting research field to change many points in TCP's =
behavior, but this once again points to the fact that this not the IETF =
works but IRTF or elsewhere.<br class=3D""></font></blockquote><font =
size=3D"4" class=3D"">[Gaurav] Martin, Authors are trying to suggest =
that TCP is rightly treating Network as Black Box. Authors are implying =
per path performance metrics as not cached. Is there some change in text =
you are suggesting?<br class=3D""></font></blockquote><font size=3D"4" =
class=3D""><br class=3D""><br class=3D"">I would recommend to remove the =
3rd bullet point completey. TCP isn't the place to remember "good" or =
"bad" paths. This is something the network could decide, e.g., rerouting =
TCP flows within the network or changing the forwarding path in the =
network for particular flows (if it is not routed).<br =
class=3D""></font></div></div></blockquote><div><font size=3D"4" =
class=3D""><br class=3D""></font></div><div><font size=3D"4" =
class=3D"">&lt;Gaurav&gt; Ack, after discussion, we will remove the =
Section 3 - 3rd bullet point.&nbsp;Will update in next rev - coming =
shortly.</font></div><font size=3D"4" class=3D""><br =
class=3D""></font><blockquote type=3D"cite" class=3D""><div =
class=3D""><div class=3D""><font size=3D"4" class=3D""><br class=3D"">Kind=
 regards,<br class=3D""><br class=3D""> &nbsp;Martin<br class=3D""><br =
class=3D""></font></div></div></blockquote></div><br =
class=3D""></div></div></body></html>=

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	charset=utf-8

Resending again with slight edits=E2=80=A6

Hi Martin,

Apologies from my end we had few internal authors conversations on the =
points you have raised.

Please find below my response. I will be happy to discuss further, if =
required.

I will try to publish the next rev at the earliest.

<Gaurav> inline...

> On Apr 9, 2018, at 7:58 AM, Martin Stiemerling <mls.ietf@gmail.com =
<mailto:mls.ietf@gmail.com>> wrote:
>=20
> Hi Gaurav,
>=20
> This got lost on my end, sorry for this. The filter just moved these =
messages out of my sight... :-/
>=20
> Am 15.02.18 um 05:47 schrieb Gaurav Dawra:
>> Hey Martin,
>> Sorry for late reply. Please see some comments inline[Gaurav]
>>> On Jan 9, 2018, at 2:25 PM, Martin Stiemerling <mls.ietf@gmail.com =
<mailto:mls.ietf@gmail.com> <mailto:mls.ietf@gmail.com =
<mailto:mls.ietf@gmail.com>>> wrote:
>>>=20
>>> Hi all,
>>>=20
>>> I've reviewed this document as part of the transport area review =
team's ongoing effort to review key IETF documents. These comments were =
written primarily for the transport area directors, but are copied to =
the document's authors for their information and to allow them to =
address any issues raised. When done at the time of IETF Last Call, the =
authors should consider this review together with any other last-call =
comments they receive. Please always CC tsv-art@=E2=80=A6 if you reply =
to or forward this review.
>>>=20
>>> Summary:
>>> This draft has serious issues in Section 7.1, 7.2 and in one part of =
Section3, described in the review, and needs to be rethought. The other =
sections are good AFAIK.
>>>=20
>>>=20
>>> Technicals:
>>> The overall draft looks ok, but the three points below look strange =
and need a fix before publication IMHO:
>>>=20
>>> Both Sections, 7.1. and 7.2., are describing ideas, but not well =
proven funcationality and not even safe to use functionality. Both are =
some sort discussing that different paths in the network could be used =
by the end host traffic. This sounds pretty much like the Path Aware =
Networking Proposed Research Group (https://irtf.org/panrg =
<https://irtf.org/panrg>) and hints to the fact that there is no =
commonly understand and accepted engineering solution in this space.
>>>=20
>>> Section 7.1:
>>> [KANDULA04] is a really old reference that hasn't been followed up =
in recent times and even worse there is no evidence that this is going =
to work good enough or stable enough under real Internet traffic. =
Additionally, it is more than unclear how any modern TCP implementation =
will react to this
>> [Gaurav] Will get back on this.
>=20
> I will reply to the other email dicussing this.
<Gaurav> I have replied to other thread.
>=20
>>>=20
>>> Section 7.2:
>>> This section describes an idea without detailing too much about any =
further aspects. Further it changes the commonly accepted notion of what =
an end host can do with the network. At best this would require a good =
definition of what an end host in your setting is, e.g., a highly =
modified piece of (at least) software that usually not found in OS =
availble on the market (yet?)
>>> Further communicating instantaneous path characteristics to a =
central point is potentially a bad idea, as the data is already outdated =
when reported by any node.
>> [Gaurav] I believe Authors are trying to highlight that Host which is =
defined in =
(https://tools.ietf.org/html/draft-ietf-spring-segment-routing-15 =
<https://tools.ietf.org/html/draft-ietf-spring-segment-routing-15>) can =
influence the traffic based on the Calculations locally or jointly with =
the controller. Implementations can decide how much Centralized -vs- =
localized control is allowed at Host based on performance data =
collection.
>=20
> Performance data collection (monitoring?) isn't crucial when it comes =
to timely (actually real-time) reaction. However, this section isn't =
just about performance data collection as it is about "Performance-aware =
routing" this seems to try to interact in real-time with the network =
behavior of TCP. This isn't even close to acceptable.
>=20
> I would be ok to say that it is useful to collect performance data for =
offline analysis and improvement of the data network. However, this is =
at completely different magnitues of time scales.
>=20
> I would recommend to remove the TCP part from this section entirely.
<Gaurav>Ack, will update in next rev:

Section will read like this:

;
=20
   Knowing the path associated with flows/packets, the end host may
   deduce certain characteristics of the path on its own, and
   additionally use the information supplied with path information
   pushed from the controller or received via pull request.  The host
   may further share its path observations with the centralized agent,
   so that the latter may keep up-to-date network health map to assist
   other hosts with this information.
=20
   For example, an application A.1 at HostA may pin a flow destined
   to HostZ via Spine node Node5 using label stack {16005, 16011}. The
   application A.1 may collect information on packet loss, deduced from
   other offline mechanisms.
=20
    Through these mechanisms information to a centralized agent, e.g.
   after a flow completes, or periodically for longer lived flows.
   Next, using both local and/or global performance data, application
   A.1 as well as other applications sharing the same resources in the
   DC fabric may pick up the best path for the new flow, or update an
   existing path (e.g.: when informed of congestion on an existing
   path).
=20
;

>=20
>=20
>>>=20
>>> Section 3, 3rd bullet point:
>>> It is the foundation of TCP that the network is regarded as a black =
box and that you infer from the transmission of packets what the current =
state of the network path is. Inferring network path metrics (you =
mention SRTT, MSS, CWND ) is a bad idea, as this would required that all =
paths exhibit this and if not what is going to happen?
>>> It could be an interesting research field to change many points in =
TCP's behavior, but this once again points to the fact that this not the =
IETF works but IRTF or elsewhere.
>> [Gaurav] Martin, Authors are trying to suggest that TCP is rightly =
treating Network as Black Box. Authors are implying per path performance =
metrics as not cached. Is there some change in text you are suggesting?
>=20
>=20
> I would recommend to remove the 3rd bullet point completey. TCP isn't =
the place to remember "good" or "bad" paths. This is something the =
network could decide, e.g., rerouting TCP flows within the network or =
changing the forwarding path in the network for particular flows (if it =
is not routed).

<Gaurav> Ack, after discussion, we will remove the Section 3 - 3rd =
bullet point. Will update in next rev - coming shortly.

>=20
> Kind regards,
>=20
>  Martin

--Apple-Mail=_A7D75C9A-7A64-4CFF-97B7-0AAA8036A2D4
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><div =
class=3D""><font size=3D"4" class=3D"">Resending again with slight =
edits=E2=80=A6</font></div><div class=3D""><font size=3D"4" class=3D""><br=
 class=3D""></font></div><font size=3D"4" class=3D"">Hi =
Martin,</font><div class=3D""><font size=3D"4" class=3D""><br =
class=3D""></font></div><div class=3D""><font size=3D"4" =
class=3D"">Apologies from my end we had few internal authors =
conversations on the points you have raised.</font></div><div =
class=3D""><font size=3D"4" class=3D""><br class=3D""></font></div><div =
class=3D""><font size=3D"4" class=3D"">Please find below my response. I =
will be happy to discuss further, if required.</font></div><div =
class=3D""><font size=3D"4" class=3D""><br class=3D""></font></div><div =
class=3D""><font size=3D"4" class=3D"">I will try to publish the next =
rev at the earliest.</font></div><div class=3D""><font size=3D"4" =
class=3D""><br class=3D""></font></div><div class=3D""><font size=3D"4" =
class=3D"">&lt;Gaurav&gt; inline...<br class=3D""></font><div =
class=3D""><font size=3D"4" class=3D""><br class=3D""></font><blockquote =
type=3D"cite" class=3D""><div class=3D""><font size=3D"4" class=3D"">On =
Apr 9, 2018, at 7:58 AM, Martin Stiemerling &lt;<a =
href=3D"mailto:mls.ietf@gmail.com" class=3D"">mls.ietf@gmail.com</a>&gt; =
wrote:</font></div><font size=3D"4" class=3D""><br =
class=3D"Apple-interchange-newline"></font><div class=3D""><div =
class=3D""><font size=3D"4" class=3D"">Hi Gaurav,<br class=3D""><br =
class=3D"">This got lost on my end, sorry for this. The filter just =
moved these messages out of my sight... :-/<br class=3D""><br =
class=3D"">Am 15.02.18 um 05:47 schrieb Gaurav Dawra:<br =
class=3D""></font><blockquote type=3D"cite" class=3D""><font size=3D"4" =
class=3D"">Hey Martin,<br class=3D"">Sorry for late reply. Please see =
some comments inline[Gaurav]<br class=3D""></font><blockquote =
type=3D"cite" class=3D""><font size=3D"4" class=3D"">On Jan 9, 2018, at =
2:25 PM, Martin Stiemerling &lt;<a href=3D"mailto:mls.ietf@gmail.com" =
class=3D"">mls.ietf@gmail.com</a>&nbsp;&lt;<a =
href=3D"mailto:mls.ietf@gmail.com" =
class=3D"">mailto:mls.ietf@gmail.com</a>&gt;&gt; wrote:<br class=3D""><br =
class=3D"">Hi all,<br class=3D""><br class=3D"">I've reviewed this =
document as part of the transport area review team's ongoing effort to =
review key IETF documents. These comments were written primarily for the =
transport area directors, but are copied to the document's authors for =
their information and to allow them to address any issues raised. When =
done at the time of IETF Last Call, the authors should consider this =
review together with any other last-call comments they receive. Please =
always CC tsv-art@=E2=80=A6 if you reply to or forward this review.<br =
class=3D""><br class=3D"">Summary:<br class=3D"">This draft has serious =
issues in Section 7.1, 7.2 and in one part of Section3, described in the =
review, and needs to be rethought. The other sections are good AFAIK.<br =
class=3D""><br class=3D""><br class=3D"">Technicals:<br class=3D"">The =
overall draft looks ok, but the three points below look strange and need =
a fix before publication IMHO:<br class=3D""><br class=3D"">Both =
Sections, 7.1. and 7.2., are describing ideas, but not well proven =
funcationality and not even safe to use functionality. Both are some =
sort discussing that different paths in the network could be used by the =
end host traffic. This sounds pretty much like the Path Aware Networking =
Proposed Research Group (<a href=3D"https://irtf.org/panrg" =
class=3D"">https://irtf.org/panrg</a>) and hints to the fact that there =
is no commonly understand and accepted engineering solution in this =
space.<br class=3D""><br class=3D"">Section 7.1:<br class=3D"">[KANDULA04]=
 is a really old reference that hasn't been followed up in recent times =
and even worse there is no evidence that this is going to work good =
enough or stable enough under real Internet traffic. Additionally, it is =
more than unclear how any modern TCP implementation will react to =
this<br class=3D""></font></blockquote><font size=3D"4" =
class=3D"">[Gaurav] Will get back on this.<br =
class=3D""></font></blockquote><font size=3D"4" class=3D""><br =
class=3D"">I will reply to the other email dicussing this.<br =
class=3D""></font></div></div></blockquote><font size=3D"4" =
class=3D"">&lt;Gaurav&gt; I have replied to other thread.<br =
class=3D""></font><blockquote type=3D"cite" class=3D""><div =
class=3D""><div class=3D""><font size=3D"4" class=3D""><br =
class=3D""></font><blockquote type=3D"cite" class=3D""><blockquote =
type=3D"cite" class=3D""><font size=3D"4" class=3D""><br =
class=3D"">Section 7.2:<br class=3D"">This section describes an idea =
without detailing too much about any further aspects. Further it changes =
the commonly accepted notion of what an end host can do with the =
network. At best this would require a good definition of what an end =
host in your setting is, e.g., a highly modified piece of (at least) =
software that usually not found in OS availble on the market (yet?)<br =
class=3D"">Further communicating instantaneous path characteristics to a =
central point is potentially a bad idea, as the data is already outdated =
when reported by any node.<br class=3D""></font></blockquote><font =
size=3D"4" class=3D"">[Gaurav] I believe Authors are trying to highlight =
that Host which is defined in (<a =
href=3D"https://tools.ietf.org/html/draft-ietf-spring-segment-routing-15" =
class=3D"">https://tools.ietf.org/html/draft-ietf-spring-segment-routing-1=
5</a>) can influence the traffic based on the Calculations locally or =
jointly with the controller. Implementations can decide how much =
Centralized -vs- localized control is allowed at Host based on =
performance data collection.<br class=3D""></font></blockquote><font =
size=3D"4" class=3D""><br class=3D"">Performance data collection =
(monitoring?) isn't crucial when it comes to timely (actually real-time) =
reaction. However, this section isn't just about performance data =
collection as it is about "Performance-aware routing" this seems to try =
to interact in real-time with the network behavior of TCP. This isn't =
even close to acceptable.<br class=3D""><br class=3D"">I would be ok to =
say that it is useful to collect performance data for offline analysis =
and improvement of the data network. However, this is at completely =
different magnitues of time scales.<br class=3D""><br class=3D"">I would =
recommend to remove the TCP part from this section entirely.<br =
class=3D""></font></div></div></blockquote><div class=3D""><font =
size=3D"4" class=3D"">&lt;Gaurav&gt;Ack, will update in next =
rev:</font></div><div class=3D""><font size=3D"4" class=3D""><br =
class=3D""></font></div><div class=3D""><font size=3D"4" =
class=3D"">Section will read like this:</font></div><div class=3D""><font =
size=3D"4" class=3D""><br class=3D""></font></div><div class=3D""><div =
class=3D""><div class=3D"" style=3D"margin: 0cm 0cm 0.0001pt;"><font =
size=3D"4" class=3D"">;<o:p class=3D""></o:p></font></div></div><div =
class=3D""><div class=3D"" style=3D"margin: 0cm 0cm 0.0001pt;"><o:p =
class=3D""><font size=3D"4" class=3D"">&nbsp;</font></o:p></div></div><div=
 class=3D""><pre class=3D"" style=3D"margin: 0cm 0cm 0.0001pt; =
break-before: page; font-variant-ligatures: normal; orphans: 2; widows: =
2;"><i class=3D""><font face=3D"Georgia" class=3D"">&nbsp;&nbsp; Knowing =
the path associated with flows/packets, the end host may<o:p =
class=3D""></o:p></font></i></pre><pre class=3D"" style=3D"margin: 0cm =
0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;&nbsp; deduce certain characteristics of the path on =
its own, and<o:p class=3D""></o:p></font></i></pre><pre class=3D"" =
style=3D"margin: 0cm 0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;&nbsp; additionally use the information supplied with =
path information<o:p class=3D""></o:p></font></i></pre><pre class=3D"" =
style=3D"margin: 0cm 0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;&nbsp; pushed from the controller or received via pull =
request.&nbsp; The host<o:p class=3D""></o:p></font></i></pre><pre =
class=3D"" style=3D"margin: 0cm 0cm 0.0001pt;"><i class=3D""><font =
face=3D"Georgia" class=3D"">&nbsp;&nbsp; may further share its path =
observations with the centralized agent,<o:p =
class=3D""></o:p></font></i></pre><pre class=3D"" style=3D"margin: 0cm =
0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;&nbsp; so that the latter may keep up-to-date network =
health map to assist<o:p class=3D""></o:p></font></i></pre><pre class=3D""=
 style=3D"margin: 0cm 0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;&nbsp; other hosts with this information.<o:p =
class=3D""></o:p></font></i></pre><pre class=3D"" style=3D"margin: 0cm =
0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;</font></i></pre><pre class=3D"" style=3D"margin: 0cm =
0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;&nbsp; For example, an application A.1 at HostA may pin =
a flow destined<o:p class=3D""></o:p></font></i></pre><pre class=3D"" =
style=3D"margin: 0cm 0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;&nbsp; to HostZ via Spine node Node5 using label stack =
{16005, 16011}. The<o:p class=3D""></o:p></font></i></pre><pre class=3D"" =
style=3D"margin: 0cm 0cm 0.0001pt;"><font face=3D"Georgia" size=3D"4" =
class=3D""><i class=3D"">&nbsp;&nbsp; application A.1 may collect =
information on packet loss, deduced from</i><o:p =
class=3D""></o:p></font></pre><pre class=3D"" style=3D"margin: 0cm 0cm =
0.0001pt; break-before: page; font-variant-ligatures: normal; orphans: =
2; widows: 2;"><font face=3D"Georgia" size=3D"4" class=3D""><i =
class=3D"">&nbsp;&nbsp; other offline mechanisms.</i></font></pre><pre =
class=3D"" style=3D"margin: 0cm 0cm 0.0001pt; break-before: page; =
font-variant-ligatures: normal; orphans: 2; widows: 2;"><o:p =
class=3D""><font face=3D"Georgia" class=3D"">&nbsp;</font></o:p></pre><pre=
 class=3D"" style=3D"margin: 0cm 0cm 0.0001pt; break-before: page; =
font-variant-ligatures: normal; orphans: 2; widows: 2;"><i =
class=3D""><font face=3D"Georgia" class=3D"">&nbsp;&nbsp;&nbsp; Through =
these mechanisms information to a centralized agent, e.g.<o:p =
class=3D""></o:p></font></i></pre><pre class=3D"" style=3D"margin: 0cm =
0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;&nbsp; after a flow completes, or periodically for =
longer lived flows.<o:p class=3D""></o:p></font></i></pre><pre class=3D"" =
style=3D"margin: 0cm 0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;&nbsp; Next, using both local and/or global performance =
data, application<o:p class=3D""></o:p></font></i></pre><pre class=3D"" =
style=3D"margin: 0cm 0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;&nbsp; A.1 as well as other applications sharing the =
same resources in the<o:p class=3D""></o:p></font></i></pre><pre =
class=3D"" style=3D"margin: 0cm 0cm 0.0001pt;"><i class=3D""><font =
face=3D"Georgia" class=3D"">&nbsp;&nbsp; DC fabric may pick up the best =
path for the new flow, or update an<o:p =
class=3D""></o:p></font></i></pre><pre class=3D"" style=3D"margin: 0cm =
0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;&nbsp; existing path (e.g.: when informed of congestion =
on an existing<o:p class=3D""></o:p></font></i></pre><pre class=3D"" =
style=3D"margin: 0cm 0cm 0.0001pt;"><i class=3D""><font face=3D"Georgia" =
class=3D"">&nbsp;&nbsp; path).<o:p class=3D""></o:p></font></i></pre><div =
class=3D""><div class=3D"" style=3D"margin: 0cm 0cm 0.0001pt;"><o:p =
class=3D""><font size=3D"4" class=3D"">&nbsp;</font></o:p></div></div><div=
 class=3D""><div class=3D"" style=3D"margin: 0cm 0cm 0.0001pt;"><font =
size=3D"4" class=3D"">;</font></div></div></div></div><div =
class=3D""><font size=3D"4" class=3D""><br =
class=3D""></font></div><blockquote type=3D"cite" class=3D""><div =
class=3D""><div class=3D""><font size=3D"4" class=3D""><br class=3D""><br =
class=3D""></font><blockquote type=3D"cite" class=3D""><blockquote =
type=3D"cite" class=3D""><font size=3D"4" class=3D""><br =
class=3D"">Section 3, 3rd bullet point:<br class=3D"">It is the =
foundation of TCP that the network is regarded as a black box and that =
you infer from the transmission of packets what the current state of the =
network path is. Inferring network path metrics (you mention SRTT, MSS, =
CWND ) is a bad idea, as this would required that all paths exhibit this =
and if not what is going to happen?<br class=3D"">It could be an =
interesting research field to change many points in TCP's behavior, but =
this once again points to the fact that this not the IETF works but IRTF =
or elsewhere.<br class=3D""></font></blockquote><font size=3D"4" =
class=3D"">[Gaurav] Martin, Authors are trying to suggest that TCP is =
rightly treating Network as Black Box. Authors are implying per path =
performance metrics as not cached. Is there some change in text you are =
suggesting?<br class=3D""></font></blockquote><font size=3D"4" =
class=3D""><br class=3D""><br class=3D"">I would recommend to remove the =
3rd bullet point completey. TCP isn't the place to remember "good" or =
"bad" paths. This is something the network could decide, e.g., rerouting =
TCP flows within the network or changing the forwarding path in the =
network for particular flows (if it is not routed).<br =
class=3D""></font></div></div></blockquote><div class=3D""><font =
size=3D"4" class=3D""><br class=3D""></font></div><div class=3D""><font =
size=3D"4" class=3D"">&lt;Gaurav&gt; Ack, after discussion, we will =
remove the Section 3 - 3rd bullet point.&nbsp;Will update in next rev - =
coming shortly.</font></div><font size=3D"4" class=3D""><br =
class=3D""></font><blockquote type=3D"cite" class=3D""><div =
class=3D""><div class=3D""><font size=3D"4" class=3D""><br class=3D"">Kind=
 regards,<br class=3D""><br =
class=3D"">&nbsp;Martin</font></div></div></blockquote></div></div></body>=
</html>=

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To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
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From: Takuya Miyasaka <ta-miyasaka@kddi-research.jp>
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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I support the adoption of this draft. This kind of feature is very 
useful from operator's point of view.

Thanks,
Takuya

On 2018/05/17 0:20, Rob Shakir wrote:
> Hi SPRING WG,
>
> This email initiates a two week call for working group adoption 
> for draft-filsfils-spring-segment-routing-policy. Please indicate your 
> support, or otherwise, for adopting this draft as a working group item 
> by *30th May 2018*. We are particularly interested in hearing from 
> working group members that are not co-authors of this draft.
>
> As part of the discussions of adopting this draft into SPRING with the 
> ADs and chairs of other WGs, there are a number of requests to the 
> authors.
>
> 1. Please clarify in the text traffic steering with "SR policy" and 
> its relationship to other traffic engineering functions. It seems to 
> me that this work is generally describing how one selects and steers 
> traffic into policies, rather than path calculation. Additional 
> clarification of whether this is the case (or not), would be welcome 
> to ensure that the relationship with other work is clear. We would ask 
> the authors to consider whether sections 14.1-14.4 are required scope 
> of this document.
>
> 2.. Consider what the core content of this document is, and how it can 
> be make as concise and clear as possible. There are some specific 
> suggestions that can be made here, but we would like to see this 
> discussed with the working group.
>
> Additionally, there are currently 17 authors listed on this document. 
> Please trim this to <= 5 front-page authors, utilising a 
> "Contributors" section if required for the others.. An approach to 
> achieving this would be to list ~2 editors as the front-page authors.
>
> In parallel to this adoption call, I will send an IPR call for this 
> document. We will need all 17 authors to confirm their IPR position on 
> this document.
>
> Thanks,
> Bruno & Rob.
>
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
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    <p>I support the adoption of this draft. This kind of feature is
      very useful from operator's point of view.<br>
    </p>
    Thanks,<br>
    Takuya<br>
    <br>
    <div class="moz-cite-prefix">On 2018/05/17 0:20, Rob Shakir wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAHd-QWsZrcdJZnnJvDCpS_RqQ1e068FTUo0Rvh8s+C2zoiuy_A@mail.gmail.com">
      <div dir="ltr">Hi SPRING WG,
        <div><br>
        </div>
        <div>This email initiates a two week call for working group
          adoption for draft-filsfils-spring-segment-routing-policy.
          Please indicate your support, or otherwise, for adopting this
          draft as a working group item by <b>30th May 2018</b>. We are
          particularly interested in hearing from working group members
          that are not co-authors of this draft.</div>
        <div><br>
        </div>
        <div>As part of the discussions of adopting this draft into
          SPRING with the ADs and chairs of other WGs, there are a
          number of requests to the authors.</div>
        <div><br>
        </div>
        <div>1. Please clarify in the text traffic steering with "SR
          policy" and its relationship to other traffic engineering
          functions. It seems to me that this work is generally
          describing how one selects and steers traffic into policies,
          rather than path calculation. Additional clarification of
          whether this is the case (or not), would be welcome to ensure
          that the relationship with other work is clear. We would ask
          the authors to consider whether sections 14.1-14.4 are
          required scope of this document.</div>
        <div><br>
        </div>
        <div>2.. Consider what the core content of this document is, and
          how it can be make as concise and clear as possible. There are
          some specific suggestions that can be made here, but we would
          like to see this discussed with the working group.</div>
        <div><br>
        </div>
        <div>Additionally, there are currently 17 authors listed on this
          document. Please trim this to &lt;= 5 front-page authors,
          utilising a "Contributors" section if required for the
          others.. An approach to achieving this would be to list ~2
          editors as the front-page authors.</div>
        <div><br>
        </div>
        <div>In parallel to this adoption call, I will send an IPR call
          for this document. We will need all 17 authors to confirm
          their IPR position on this document.</div>
        <div><br>
        </div>
        <div>Thanks,</div>
        <div>Bruno &amp; Rob.</div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
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</pre>
    </blockquote>
    <br>
  </body>
</html>

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--_000_LEJPR01MB10332CDD418FBCC10C6E0E749C910LEJPR01MB1033DEUP_--


From nobody Thu May 17 01:29:15 2018
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To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
References: <CAHd-QWsZrcdJZnnJvDCpS_RqQ1e068FTUo0Rvh8s+C2zoiuy_A@mail.gmail.com>
From: Martin Horneffer <maho@nic.dtag.de>
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Date: Thu, 17 May 2018 10:29:09 +0200
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Speaking for an operator, and as a long-time responsible person for 
applying traffic engineering to a global network, I support adoption of 
this document at the SPRING wg.

Best regards, Martin


Am 16.05.18 um 17:20 schrieb Rob Shakir:
> Hi SPRING WG,
>
> This email initiates a two week call for working group adoption 
> for draft-filsfils-spring-segment-routing-policy. Please indicate your 
> support, or otherwise, for adopting this draft as a working group item 
> by *30th May 2018*. We are particularly interested in hearing from 
> working group members that are not co-authors of this draft.
>
> As part of the discussions of adopting this draft into SPRING with the 
> ADs and chairs of other WGs, there are a number of requests to the 
> authors.
>
> 1. Please clarify in the text traffic steering with "SR policy" and 
> its relationship to other traffic engineering functions. It seems to 
> me that this work is generally describing how one selects and steers 
> traffic into policies, rather than path calculation. Additional 
> clarification of whether this is the case (or not), would be welcome 
> to ensure that the relationship with other work is clear. We would ask 
> the authors to consider whether sections 14.1-14.4 are required scope 
> of this document.
>
> 2.. Consider what the core content of this document is, and how it can 
> be make as concise and clear as possible. There are some specific 
> suggestions that can be made here, but we would like to see this 
> discussed with the working group.
>
> Additionally, there are currently 17 authors listed on this document. 
> Please trim this to <= 5 front-page authors, utilising a 
> "Contributors" section if required for the others.. An approach to 
> achieving this would be to list ~2 editors as the front-page authors.
>
> In parallel to this adoption call, I will send an IPR call for this 
> document. We will need all 17 authors to confirm their IPR position on 
> this document.
>
> Thanks,
> Bruno & Rob.
>
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring


--------------8C2C340145771DF0806009FA
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<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    Speaking for an operator, and as a long-time responsible person for
    applying traffic engineering to a global network, I support adoption
    of this document at the SPRING wg.<br>
    <br>
    Best regards, Martin<br>
    <br>
    <br>
    <div class="moz-cite-prefix">Am 16.05.18 um 17:20 schrieb Rob
      Shakir:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAHd-QWsZrcdJZnnJvDCpS_RqQ1e068FTUo0Rvh8s+C2zoiuy_A@mail.gmail.com">
      <div dir="ltr">Hi SPRING WG,
        <div><br>
        </div>
        <div>This email initiates a two week call for working group
          adoption for draft-filsfils-spring-segment-routing-policy.
          Please indicate your support, or otherwise, for adopting this
          draft as a working group item by <b>30th May 2018</b>. We are
          particularly interested in hearing from working group members
          that are not co-authors of this draft.</div>
        <div><br>
        </div>
        <div>As part of the discussions of adopting this draft into
          SPRING with the ADs and chairs of other WGs, there are a
          number of requests to the authors.</div>
        <div><br>
        </div>
        <div>1. Please clarify in the text traffic steering with "SR
          policy" and its relationship to other traffic engineering
          functions. It seems to me that this work is generally
          describing how one selects and steers traffic into policies,
          rather than path calculation. Additional clarification of
          whether this is the case (or not), would be welcome to ensure
          that the relationship with other work is clear. We would ask
          the authors to consider whether sections 14.1-14.4 are
          required scope of this document.</div>
        <div><br>
        </div>
        <div>2.. Consider what the core content of this document is, and
          how it can be make as concise and clear as possible. There are
          some specific suggestions that can be made here, but we would
          like to see this discussed with the working group.</div>
        <div><br>
        </div>
        <div>Additionally, there are currently 17 authors listed on this
          document. Please trim this to &lt;= 5 front-page authors,
          utilising a "Contributors" section if required for the
          others.. An approach to achieving this would be to list ~2
          editors as the front-page authors.</div>
        <div><br>
        </div>
        <div>In parallel to this adoption call, I will send an IPR call
          for this document. We will need all 17 authors to confirm
          their IPR position on this document.</div>
        <div><br>
        </div>
        <div>Thanks,</div>
        <div>Bruno &amp; Rob.</div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
spring mailing list
<a class="moz-txt-link-abbreviated" href="mailto:spring@ietf.org">spring@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/spring">https://www.ietf.org/mailman/listinfo/spring</a>
</pre>
    </blockquote>
    <br>
  </body>
</html>

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From: Martin Horneffer <maho@nic.dtag.de>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
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Subject: Re: [spring] IPR Poll for draft-filsfils-spring-segment-routing-policy
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I am not aware of any IPR that applies to this document.

Best regards, Martin

Am 16.05.18 um 17:20 schrieb Rob Shakir:
> Hi SPRING WG,
>
> In parallel to the call for adoption 
> for draft-filsfils-spring-segment-routing-policy, we would like to 
> poll for IPR.
>
> If you are aware of IPR that applies 
> to draft-filsfils-spring-segment-routing-policy please respond to this 
> email. If you are aware of IPR, please indicate whether it has been 
> disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and 
> 5378 provide more details).
>
> If you are an *author or contributor* please respond to this email 
> regardless of whether or not you're aware of any IPR. If you are not 
> an author or contributor, please explicitly respond only if you are 
> aware of IPR that has not yet been disclosed.
>
> This document will not advance into the working group until IPR 
> confirmations have been received from all authors and contributors.
>
> Thanks,
> Bruno & Rob.
>
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring


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    I am not aware of any IPR that applies to this document.<br>
    <br>
    Best regards, Martin<br>
    <br>
    <div class="moz-cite-prefix">Am 16.05.18 um 17:20 schrieb Rob
      Shakir:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAHd-QWsAYVWcAE9TRbkzSfY_60wC+O0YZZQB7ZnRHr=mPkuBpw@mail.gmail.com">
      <div dir="ltr">Hi SPRING WG,
        <div><br>
        </div>
        <div>In parallel to the call for adoption
          for draft-filsfils-spring-segment-routing-policy, we would
          like to poll for IPR.</div>
        <div><br>
        </div>
        <div>If you are aware of IPR that applies
          to draft-filsfils-spring-segment-routing-policy please respond
          to this email. If you are aware of IPR, please indicate
          whether it has been disclosed in accordance with IETF IPR
          rules (RFCs 3979, 4879, 3669 and 5378 provide more details).</div>
        <div><br>
        </div>
        <div>If you are an <b>author or contributor</b> please respond
          to this email regardless of whether or not you're aware of any
          IPR. If you are not an author or contributor, please
          explicitly respond only if you are aware of IPR that has not
          yet been disclosed.</div>
        <div><br>
        </div>
        <div>This document will not advance into the working group until
          IPR confirmations have been received from all authors and
          contributors.</div>
        <div><br>
        </div>
        <div>Thanks,</div>
        <div>Bruno &amp; Rob.</div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
spring mailing list
<a class="moz-txt-link-abbreviated" href="mailto:spring@ietf.org">spring@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/spring">https://www.ietf.org/mailman/listinfo/spring</a>
</pre>
    </blockquote>
    <br>
  </body>
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As a co-author, I support WG adoption

Cheers,
Clarence

On 16/05/2018 17:20, Rob Shakir wrote:
> Hi SPRING WG,
> 
> This email initiates a two week call for working group adoption 
> for draft-filsfils-spring-segment-routing-policy. Please indicate your 
> support, or otherwise, for adopting this draft as a working group item 
> by *30th May 2018*. We are particularly interested in hearing from 
> working group members that are not co-authors of this draft.
> 
> As part of the discussions of adopting this draft into SPRING with the 
> ADs and chairs of other WGs, there are a number of requests to the authors.
> 
> 1. Please clarify in the text traffic steering with "SR policy" and its 
> relationship to other traffic engineering functions. It seems to me that 
> this work is generally describing how one selects and steers traffic 
> into policies, rather than path calculation. Additional clarification of 
> whether this is the case (or not), would be welcome to ensure that the 
> relationship with other work is clear. We would ask the authors to 
> consider whether sections 14.1-14.4 are required scope of this document.
> 
> 2.. Consider what the core content of this document is, and how it can 
> be make as concise and clear as possible. There are some specific 
> suggestions that can be made here, but we would like to see this 
> discussed with the working group.
> 
> Additionally, there are currently 17 authors listed on this document. 
> Please trim this to <= 5 front-page authors, utilising a "Contributors" 
> section if required for the others.. An approach to achieving this would 
> be to list ~2 editors as the front-page authors.
> 
> In parallel to this adoption call, I will send an IPR call for this 
> document. We will need all 17 authors to confirm their IPR position on 
> this document.
> 
> Thanks,
> Bruno & Rob.
> 
> 
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
> 


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From: Mohan Nanduri <mohan.nanduri@gmail.com>
Date: Fri, 18 May 2018 09:34:15 -0400
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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I Support WG adoption.


Cheers,
-Mohan

On Wed, May 16, 2018 at 11:20 AM, Rob Shakir <robjs@google.com> wrote:
> Hi SPRING WG,
>
> This email initiates a two week call for working group adoption for
> draft-filsfils-spring-segment-routing-policy. Please indicate your support,
> or otherwise, for adopting this draft as a working group item by 30th May
> 2018. We are particularly interested in hearing from working group members
> that are not co-authors of this draft.
>
> As part of the discussions of adopting this draft into SPRING with the ADs
> and chairs of other WGs, there are a number of requests to the authors.
>
> 1. Please clarify in the text traffic steering with "SR policy" and its
> relationship to other traffic engineering functions. It seems to me that
> this work is generally describing how one selects and steers traffic into
> policies, rather than path calculation. Additional clarification of whether
> this is the case (or not), would be welcome to ensure that the relationship
> with other work is clear. We would ask the authors to consider whether
> sections 14.1-14.4 are required scope of this document.
>
> 2.. Consider what the core content of this document is, and how it can be
> make as concise and clear as possible. There are some specific suggestions
> that can be made here, but we would like to see this discussed with the
> working group.
>
> Additionally, there are currently 17 authors listed on this document. Please
> trim this to <= 5 front-page authors, utilising a "Contributors" section if
> required for the others.. An approach to achieving this would be to list ~2
> editors as the front-page authors.
>
> In parallel to this adoption call, I will send an IPR call for this
> document. We will need all 17 authors to confirm their IPR position on this
> document.
>
> Thanks,
> Bruno & Rob.
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>


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From: <bruno.decraene@orange.com>
To: SPRING WG List <spring@ietf.org>
Thread-Topic: IPR Disclosure Cisco's Statement about IPR related to draft-filsfils-spring-segment-routing-policy
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Date: Fri, 18 May 2018 15:33:28 +0000
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From nobody Fri May 18 08:39:24 2018
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Subject: [spring] The SPRING WG has placed draft-filsfils-spring-segment-routing-policy in state "Call For Adoption By WG Issued"
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The SPRING WG has placed draft-filsfils-spring-segment-routing-policy in state
Call For Adoption By WG Issued (entered by Bruno Decraene)

The document is available at
https://datatracker.ietf.org/doc/draft-filsfils-spring-segment-routing-policy/

Comment:
Call end: 30th May 2018
Adoption call:
https://mailarchive.ietf.org/arch/msg/spring/WYyJZ1hdnI0iAnnad5_hIqeri8g IPR
call: https://mailarchive.ietf.org/arch/msg/spring/ymlCa-4HKZSgBM19IYjPcgfKpkU


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From: "Ketan Talaulikar (ketant)" <ketant@cisco.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
Thread-Topic: [spring] IPR Poll for draft-filsfils-spring-segment-routing-policy
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Date: Fri, 18 May 2018 16:32:39 +0000
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Subject: Re: [spring] IPR Poll for draft-filsfils-spring-segment-routing-policy
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From: "Zafar Ali (zali)" <zali@cisco.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
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From: "Zafar Ali (zali)" <zali@cisco.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
CC: "Zafar Ali (zali)" <zali@cisco.com>
Thread-Topic: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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To: bruno.decraene@orange.com, Rob Shakir <robjs@google.com>
Cc: SPRING WG List <spring@ietf.org>, "draft-filsfils-spring-segment-routing-policy@ietf.org" <draft-filsfils-spring-segment-routing-policy@ietf.org>
References: <CAHd-QWsAYVWcAE9TRbkzSfY_60wC+O0YZZQB7ZnRHr=mPkuBpw@mail.gmail.com> <11090_1526487312_5AFC5910_11090_188_1_53C29892C857584299CBF5D05346208A47A4899A@OPEXCLILM21.corporate.adroot.infra.ftgroup>
From: "Clarence Filsfils (cfilsfil)" <cfilsfil@cisco.com>
Message-ID: <4876a314-0f32-a865-e9c0-b0fcd1f02986@cisco.com>
Date: Sun, 20 May 2018 11:28:54 +0200
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Subject: Re: [spring] IPR Poll for draft-filsfils-spring-segment-routing-policy
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Not aware of any IPR other than already disclosed.

Cheers,
Clarence

On 16/05/2018 18:15, bruno.decraene@orange.com wrote:
> [+ authors]
> 
> I'm not aware of any IPR that applies to this draft
> 
> --Bruno
> 
> *From:*spring [mailto:spring-bounces@ietf.org] *On Behalf Of *Rob Shakir
> *Sent:* Wednesday, May 16, 2018 5:20 PM
> *To:* SPRING WG List
> *Subject:* [spring] IPR Poll for 
> draft-filsfils-spring-segment-routing-policy
> 
> Hi SPRING WG,
> 
> In parallel to the call for adoption 
> for draft-filsfils-spring-segment-routing-policy, we would like to poll 
> for IPR.
> 
> If you are aware of IPR that applies 
> to draft-filsfils-spring-segment-routing-policy please respond to this 
> email. If you are aware of IPR, please indicate whether it has been 
> disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and 
> 5378 provide more details).
> 
> If you are an *author or contributor* please respond to this email 
> regardless of whether or not you're aware of any IPR. If you are not an 
> author or contributor, please explicitly respond only if you are aware 
> of IPR that has not yet been disclosed.
> 
> This document will not advance into the working group until IPR 
> confirmations have been received from all authors and contributors.
> 
> Thanks,
> 
> Bruno & Rob.
> 
> _________________________________________________________________________________________________________________________
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From: "Siva Sivabalan (msiva)" <msiva@cisco.com>
To: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, Rob Shakir <robjs@google.com>
CC: SPRING WG List <spring@ietf.org>, "draft-filsfils-spring-segment-routing-policy@ietf.org" <draft-filsfils-spring-segment-routing-policy@ietf.org>
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From: Przemyslaw Krol <pkrol@google.com>
Date: Sun, 20 May 2018 12:53:07 -0700
Message-ID: <CACH2EkUQuT7A=TNSk=RBgVPY5Xf4AQLTJ7dD=mwKsRZsv0KXHg@mail.gmail.com>
To: "Siva Sivabalan (msiva)" <msiva@cisco.com>
Cc: bruno.decraene@orange.com, Rob Shakir <robjs@google.com>, spring@ietf.org,  draft-filsfils-spring-segment-routing-policy@ietf.org
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/rA4FaP9QGFkv4BV_aoP5mFrLS4o>
Subject: Re: [spring] IPR Poll for draft-filsfils-spring-segment-routing-policy
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Content-Type: text/plain; charset="UTF-8"

I am not aware of any IPR applicable to this draft.

thanks,
pk

On Sun, May 20, 2018 at 5:48 AM Siva Sivabalan (msiva) <msiva@cisco.com>
wrote:

> I am not aware of any IPR applicable to this draft.
>
>
>
> Thanks,
>
> Siva
>
>
>
> *From:* bruno.decraene@orange.com <bruno.decraene@orange.com>
> *Sent:* Wednesday, May 16, 2018 12:15 PM
> *To:* Rob Shakir <robjs@google.com>
> *Cc:* SPRING WG List <spring@ietf.org>;
> draft-filsfils-spring-segment-routing-policy@ietf.org
> *Subject:* RE: [spring] IPR Poll for
> draft-filsfils-spring-segment-routing-policy
>
>
>
> [+ authors]
>
>
>
> I'm not aware of any IPR that applies to this draft
>
>
>
> --Bruno
>
>
>
> *From:* spring [mailto:spring-bounces@ietf.org <spring-bounces@ietf.org>] *On
> Behalf Of *Rob Shakir
> *Sent:* Wednesday, May 16, 2018 5:20 PM
> *To:* SPRING WG List
> *Subject:* [spring] IPR Poll for
> draft-filsfils-spring-segment-routing-policy
>
>
>
> Hi SPRING WG,
>
>
>
> In parallel to the call for adoption
> for draft-filsfils-spring-segment-routing-policy, we would like to poll for
> IPR.
>
>
>
> If you are aware of IPR that applies
> to draft-filsfils-spring-segment-routing-policy please respond to this
> email. If you are aware of IPR, please indicate whether it has been
> disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and 5378
> provide more details).
>
>
>
> If you are an *author or contributor* please respond to this email
> regardless of whether or not you're aware of any IPR. If you are not an
> author or contributor, please explicitly respond only if you are aware of
> IPR that has not yet been disclosed.
>
>
>
> This document will not advance into the working group until IPR
> confirmations have been received from all authors and contributors.
>
>
>
> Thanks,
>
> Bruno & Rob.
>
> _________________________________________________________________________________________________________________________
>
>
>
> 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.
>
>

-- 
Przemyslaw "PK" Krol |  Strategic Network Engineer ing | pkrol@google.com

--000000000000efe24f056ca88aaa
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">I am not aware of any IPR applicable to this draft.<br><di=
v><br></div><div>thanks,</div><div>pk</div></div><br><div class=3D"gmail_qu=
ote"><div dir=3D"ltr">On Sun, May 20, 2018 at 5:48 AM Siva Sivabalan (msiva=
) &lt;<a href=3D"mailto:msiva@cisco.com">msiva@cisco.com</a>&gt; wrote:<br>=
</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-l=
eft:1px #ccc solid;padding-left:1ex">





<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"m_-2054740207149089489WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1f497d">I am not aware of any IPR applicable =
to this draft.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1f497d"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1f497d">Thanks,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1f497d">Siva<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1f497d"><u></u>=C2=A0<u></u></span></p>
<div>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><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"> <a href=3D"mailto:bruno.decrae=
ne@orange.com" target=3D"_blank">bruno.decraene@orange.com</a> &lt;<a href=
=3D"mailto:bruno.decraene@orange.com" target=3D"_blank">bruno.decraene@oran=
ge.com</a>&gt;
<br>
<b>Sent:</b> Wednesday, May 16, 2018 12:15 PM<br>
<b>To:</b> Rob Shakir &lt;<a href=3D"mailto:robjs@google.com" target=3D"_bl=
ank">robjs@google.com</a>&gt;<br>
<b>Cc:</b> SPRING WG List &lt;<a href=3D"mailto:spring@ietf.org" target=3D"=
_blank">spring@ietf.org</a>&gt;; <a href=3D"mailto:draft-filsfils-spring-se=
gment-routing-policy@ietf.org" target=3D"_blank">draft-filsfils-spring-segm=
ent-routing-policy@ietf.org</a><br>
<b>Subject:</b> RE: [spring] IPR Poll for draft-filsfils-spring-segment-rou=
ting-policy<u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">[+ authors]<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">I&#39;m not aware of any IPR that applies to this dr=
aft<u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black">--Bruno<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black"><u></u>=C2=A0<u></u></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,sans-serif">From:</span></b><span style=3D"font-size:10.0pt;f=
ont-family:&quot;Tahoma&quot;,sans-serif"> spring [<a href=3D"mailto:spring=
-bounces@ietf.org" target=3D"_blank">mailto:spring-bounces@ietf.org</a>]
<b>On Behalf Of </b>Rob Shakir<br>
<b>Sent:</b> Wednesday, May 16, 2018 5:20 PM<br>
<b>To:</b> SPRING WG List<br>
<b>Subject:</b> [spring] IPR Poll for draft-filsfils-spring-segment-routing=
-policy<u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal"><span lang=3D"FR">Hi SPRING WG,<u></u><u></u></span>=
</p>
<div>
<p class=3D"MsoNormal"><span lang=3D"FR"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"FR">In parallel to the call for adopti=
on for=C2=A0draft-filsfils-spring-segment-routing-policy, we would like to =
poll for IPR.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"FR"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"FR">If you are aware of IPR that appli=
es to=C2=A0draft-filsfils-spring-segment-routing-policy please respond to t=
his email. If you are aware of IPR, please indicate whether it has been dis=
closed in accordance with IETF IPR rules
 (RFCs 3979, 4879, 3669 and 5378 provide more details).<u></u><u></u></span=
></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"FR"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"FR">If you are an <b>author or contrib=
utor</b>=C2=A0please respond to this email regardless of whether or not you=
&#39;re aware of any IPR. If you are not an author or contributor, please e=
xplicitly respond only if you are aware of IPR
 that has not yet been disclosed.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"FR"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"FR">This document will not advance int=
o the working group until IPR confirmations have been received from all aut=
hors and contributors.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"FR"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"FR">Thanks,<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"FR">Bruno &amp; Rob.<u></u><u></u></sp=
an></p>
</div>
</div>
</div>
<pre><span lang=3D"FR">____________________________________________________=
_____________________________________________________________________<u></u=
><u></u></span></pre>
<pre><span lang=3D"FR"><u></u>=C2=A0<u></u></span></pre>
<pre><span lang=3D"FR">Ce message et ses pieces jointes peuvent contenir de=
s informations confidentielles ou privilegiees et ne doivent donc<u></u><u>=
</u></span></pre>
<pre><span lang=3D"FR">pas etre diffuses, exploites ou copies sans autorisa=
tion. Si vous avez recu ce message par erreur, veuillez le signaler<u></u><=
u></u></span></pre>
<pre><span lang=3D"FR">a l&#39;expediteur et le detruire ainsi que les piec=
es jointes. Les messages electroniques etant susceptibles d&#39;alteration,=
<u></u><u></u></span></pre>
<pre><span lang=3D"FR">Orange decline toute responsabilite si ce message a =
ete altere, deforme ou falsifie. Merci.<u></u><u></u></span></pre>
<pre><span lang=3D"FR"><u></u>=C2=A0<u></u></span></pre>
<pre><span lang=3D"FR">This message and its attachments may contain confide=
ntial or privileged information that may be protected by law;<u></u><u></u>=
</span></pre>
<pre><span lang=3D"FR">they should not be distributed, used or copied witho=
ut authorisation.<u></u><u></u></span></pre>
<pre><span lang=3D"FR">If you have received this email in error, please not=
ify the sender and delete this message and its attachments.<u></u><u></u></=
span></pre>
<pre><span lang=3D"FR">As emails may be altered, Orange is not liable for m=
essages that have been modified, changed or falsified.<u></u><u></u></span>=
</pre>
<pre><span lang=3D"FR">Thank you.<u></u><u></u></span></pre>
</div>
</div>

</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
 class=3D"gmail_signature" data-smartmail=3D"gmail_signature"><div dir=3D"l=
tr"><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div>=
<div dir=3D"ltr"><div><div dir=3D"ltr"><div><div style=3D"padding-top:10px;=
margin-top:10px"><table cellspacing=3D"0" cellpadding=3D"0" style=3D"color:=
rgb(0,0,0);font-family:Times;line-height:normal;font-size:medium"><tbody><t=
r style=3D"color:rgb(85,85,85);font-family:sans-serif;font-size:small"><td =
style=3D"border-top-style:solid;border-top-color:rgb(213,15,37);border-top-=
width:2px">Przemyslaw &quot;PK&quot; Krol |</td><td style=3D"border-top-sty=
le:solid;border-top-color:rgb(51,105,232);border-top-width:2px">=C2=A0Strat=
egic Network Engineer</td><td style=3D"border-top-style:solid;border-top-co=
lor:rgb(0,153,57);border-top-width:2px"><span style=3D"line-height:19px;whi=
te-space:normal"><span style=3D"border-top-width:2px;border-right-width:0px=
;border-bottom-width:0px;border-left-width:0px;border-top-style:solid;borde=
r-right-style:solid;border-bottom-style:solid;border-left-style:solid;borde=
r-top-color:rgb(51,105,232);border-right-color:rgb(51,105,232);border-botto=
m-color:rgb(51,105,232);border-left-color:rgb(51,105,232);padding-top:2px;m=
argin-top:2px">ing |</span><span style=3D"border-top-width:2px;border-right=
-width:0px;border-bottom-width:0px;border-left-width:0px;border-top-style:s=
olid;border-right-style:solid;border-bottom-style:solid;border-left-style:s=
olid;border-top-color:rgb(0,153,57);border-right-color:rgb(0,153,57);border=
-bottom-color:rgb(0,153,57);border-left-color:rgb(0,153,57);padding-top:2px=
;margin-top:2px">=C2=A0<a href=3D"mailto:pkrol@google.com" target=3D"_blank=
"><font color=3D"#1155cc">pkrol@google.com</font></a>=C2=A0</span></span></=
td><td style=3D"border-top-style:solid;border-top-color:rgb(238,178,17);bor=
der-top-width:2px"><br></td></tr></tbody></table></div></div></div></div></=
div></div></div></div></div></div></div></div></div></div>

--000000000000efe24f056ca88aaa--


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From: Lizhenbin <lizhenbin@huawei.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
Thread-Topic: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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From: "Jose Liste (jliste)" <jliste@cisco.com>
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CC: SPRING WG List <spring@ietf.org>, "draft-filsfils-spring-segment-routing-policy@ietf.org" <draft-filsfils-spring-segment-routing-policy@ietf.org>, "Jose Liste (jliste)" <jliste@cisco.com>
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Subject: Re: [spring] [Lsr] I-D Action: draft-ietf-lsr-flex-algo-00.txt
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Hi,

IGP Flex-Algo draft has been published as an LSR WG document.

I would appreciate feedback from the SPRING WG.

thanks,
Peter




On 15/05/18 12:27 , internet-drafts@ietf.org wrote:
>
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> This draft is a work item of the Link State Routing WG of the IETF.
>
>          Title           : IGP Flexible Algorithm
>          Authors         : Peter Psenak
>                            Shraddha Hegde
>                            Clarence Filsfils
>                            Ketan Talaulikar
>                            Arkadiy Gulko
> 	Filename        : draft-ietf-lsr-flex-algo-00.txt
> 	Pages           : 23
> 	Date            : 2018-05-15
>
> Abstract:
>     IGP protocols traditionally compute best paths over the network based
>     on the IGP metric assigned to the links.  Many network deployments
>     use RSVP-TE based or Segment Routing based Traffic Engineering to
>     enforce traffic over a path that is computed using different metrics
>     or constraints than the shortest IGP path.  This document proposes a
>     solution that allows IGPs themselves to compute constraint based
>     paths over the network.  This document also specifies a way of using
>     Segment Routing Prefix-SIDs to steer packets along the constraint-
>     based paths.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-lsr-flex-algo/
>
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-lsr-flex-algo-00
> https://datatracker.ietf.org/doc/html/draft-ietf-lsr-flex-algo-00
>
>
> 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/
>
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr
> .
>


From nobody Mon May 21 01:40:13 2018
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Subject: [spring] I-D Action: draft-filsfils-spring-segment-routing-policy-06.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           : Segment Routing Policy Architecture
        Authors         : Clarence Filsfils
                          Siva Sivabalan
                          Shraddha Hegde
                          Daniel Voyer
                          Steven Lin
                          Alex Bogdanov
                          Przemyslaw Krol
                          Martin Horneffer
                          Dirk Steinberg
                          Bruno Decraene
                          Stephane Litkowski
                          Paul Mattes
                          Zafar Ali
                          Ketan Talaulikar
                          Jose Liste
                          Francois Clad
                          Kamran Raza
	Filename        : draft-filsfils-spring-segment-routing-policy-06.txt
	Pages           : 34
	Date            : 2018-05-21

Abstract:
   Segment Routing (SR) allows a headend node to steer a packet flow
   along any path.  Intermediate per-flow states are eliminated thanks
   to source routing.  The headend node steers a flow into an SR Policy.
   The header of a packet steered in an SR Policy is augmented with the
   ordered list of segments associated with that SR Policy.  This
   document details the concepts of SR Policy and steering into an SR
   Policy.



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-filsfils-spring-segment-routing-policy/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-filsfils-spring-segment-routing-policy-06
https://datatracker.ietf.org/doc/html/draft-filsfils-spring-segment-routing-policy-06

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-filsfils-spring-segment-routing-policy-06


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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From: Rob Shakir <robjs@google.com>
Date: Mon, 21 May 2018 08:12:27 -0700
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To: "Ketan Talaulikar (ketant)" <ketant@cisco.com>
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Content-Type: text/plain; charset="UTF-8"

Ketan,

Thanks for the work on this -- this is definitely a good step to moving
towards these documents being clearer and more addressable.

Just FYI, there is still an outstanding point around the authors for the
document under review here (draft-filsfils-spring-segment-routing-policy).

Kind regards,
r.

On Mon, May 21, 2018 at 1:44 AM Ketan Talaulikar (ketant) <ketant@cisco.com>
wrote:

> Hello Chairs/All,
>
>
>
> At the IETF London and afterwards over the mailing list, the chairs have
> asked us to split the SR Policy draft into sub-documents to allow for
> faster proceeding of the core concepts. As asked and discussed, the authors
> have proceeded to split draft-filsfils-spring-segment-routing-policy-05 as
> follows:
>
>
>
> 1)     The core architecture of SR Policy has been published
> <https://tools.ietf.org/html/draft-filsfils-spring-segment-routing-policy-06>
> as draft-filsfils-spring-segment-routing-policy-06.
>
> 2)     The section 13 on traffic counters has been moved to an existing
> draft and a new version of draft-ali-spring-sr-traffic-accounting-01 has
> been posted
> <https://tools.ietf.org/html/draft-ali-spring-sr-traffic-accounting-01>,
> accordingly.
>
> 3)     The contents of section 14, the Appendix, and a few other sections
> have been published
> <https://tools.ietf.org/html/draft-filsfils-spring-sr-policy-considerations-00>
> as a new informational draft,
> draft-filsfils-spring-sr-policy-considerations-00.
>
>
>
> Please let know if you have any questions or feedback.
>
>
>
> Thanks,
>
> Ketan (on behalf of authors of
> draft-filsfils-spring-segment-routing-policy)
>
>
>
> *From:* spring <spring-bounces@ietf.org> *On Behalf Of *Rob Shakir
> *Sent:* 16 May 2018 20:50
> *To:* SPRING WG List <spring@ietf.org>
> *Subject:* [spring] Working Group Adoption Call for
> draft-filsfils-spring-segment-routing-policy
>
>
>
> Hi SPRING WG,
>
>
>
> This email initiates a two week call for working group adoption
> for draft-filsfils-spring-segment-routing-policy. Please indicate your
> support, or otherwise, for adopting this draft as a working group item by *30th
> May 2018*. We are particularly interested in hearing from working group
> members that are not co-authors of this draft.
>
>
>
> As part of the discussions of adopting this draft into SPRING with the ADs
> and chairs of other WGs, there are a number of requests to the authors.
>
>
>
> 1. Please clarify in the text traffic steering with "SR policy" and its
> relationship to other traffic engineering functions. It seems to me that
> this work is generally describing how one selects and steers traffic into
> policies, rather than path calculation. Additional clarification of whether
> this is the case (or not), would be welcome to ensure that the relationship
> with other work is clear. We would ask the authors to consider whether
> sections 14.1-14.4 are required scope of this document.
>
>
>
> 2.. Consider what the core content of this document is, and how it can be
> make as concise and clear as possible. There are some specific suggestions
> that can be made here, but we would like to see this discussed with the
> working group.
>
>
>
> Additionally, there are currently 17 authors listed on this document.
> Please trim this to <= 5 front-page authors, utilising a "Contributors"
> section if required for the others.. An approach to achieving this would be
> to list ~2 editors as the front-page authors.
>
>
>
> In parallel to this adoption call, I will send an IPR call for this
> document. We will need all 17 authors to confirm their IPR position on this
> document.
>
>
>
> Thanks,
>
> Bruno & Rob.
>

--00000000000081dc7f056cb8bbab
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Ketan,<div><br></div><div>Thanks for the work on this -- t=
his is definitely a good step to moving towards these documents being clear=
er and more addressable.</div><div><br></div><div>Just FYI, there is still =
an outstanding point around the authors for the document under review here =
(draft-filsfils-spring-segment-routing-policy).=C2=A0</div><div><br></div><=
div>Kind regards,</div><div>r.</div></div><br><div class=3D"gmail_quote"><d=
iv dir=3D"ltr">On Mon, May 21, 2018 at 1:44 AM Ketan Talaulikar (ketant) &l=
t;<a href=3D"mailto:ketant@cisco.com">ketant@cisco.com</a>&gt; wrote:<br></=
div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-lef=
t:1px #ccc solid;padding-left:1ex">





<div lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72">
<div class=3D"m_7899759888214640910WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">Hello Chairs/All,
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d"><u></u>=C2=A0<u></u></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">At the IETF London and=
 afterwards over the mailing list, the chairs have asked us to split the SR=
 Policy draft into sub-documents to allow for faster
 proceeding of the core concepts. As asked and discussed, the authors have =
proceeded to split draft-filsfils-spring-segment-routing-policy-05 as follo=
ws:
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d"><u></u>=C2=A0<u></u></=
span></p>
<p class=3D"m_7899759888214640910MsoListParagraph"><u></u><span lang=3D"EN-=
IN" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;co=
lor:#1f497d"><span>1)<span style=3D"font:7.0pt &quot;Times New Roman&quot;"=
>=C2=A0=C2=A0=C2=A0=C2=A0
</span></span></span><u></u><span lang=3D"EN-IN" style=3D"font-size:11.0pt;=
font-family:&quot;Calibri&quot;,sans-serif;color:#1f497d">The core architec=
ture of SR Policy has been
<a href=3D"https://tools.ietf.org/html/draft-filsfils-spring-segment-routin=
g-policy-06" target=3D"_blank">
published</a> as draft-filsfils-spring-segment-routing-policy-06. <u></u><u=
></u></span></p>
<p class=3D"m_7899759888214640910MsoListParagraph"><u></u><span lang=3D"EN-=
IN" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;co=
lor:#1f497d"><span>2)<span style=3D"font:7.0pt &quot;Times New Roman&quot;"=
>=C2=A0=C2=A0=C2=A0=C2=A0
</span></span></span><u></u><span lang=3D"EN-IN" style=3D"font-size:11.0pt;=
font-family:&quot;Calibri&quot;,sans-serif;color:#1f497d">The section 13 on=
 traffic counters has been moved to an existing draft and a new version of =
draft-ali-spring-sr-traffic-accounting-01 has
 been <a href=3D"https://tools.ietf.org/html/draft-ali-spring-sr-traffic-ac=
counting-01" target=3D"_blank">
posted</a>, accordingly. <u></u><u></u></span></p>
<p class=3D"m_7899759888214640910MsoListParagraph"><u></u><span lang=3D"EN-=
IN" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;co=
lor:#1f497d"><span>3)<span style=3D"font:7.0pt &quot;Times New Roman&quot;"=
>=C2=A0=C2=A0=C2=A0=C2=A0
</span></span></span><u></u><span lang=3D"EN-IN" style=3D"font-size:11.0pt;=
font-family:&quot;Calibri&quot;,sans-serif;color:#1f497d">The contents of s=
ection 14, the Appendix, and a few other sections have been
<a href=3D"https://tools.ietf.org/html/draft-filsfils-spring-sr-policy-cons=
iderations-00" target=3D"_blank">
published</a> as a new informational draft,=C2=A0 draft-filsfils-spring-sr-=
policy-considerations-00.=C2=A0
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d"><u></u>=C2=A0<u></u></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">Please let know if you=
 have any questions or feedback.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d"><u></u>=C2=A0<u></u></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">Thanks,<u></u><u></u><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">Ketan (on behalf of au=
thors of draft-filsfils-spring-segment-routing-policy)<u></u><u></u></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d"><u></u>=C2=A0<u></u></=
span></p>
<p class=3D"MsoNormal"><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"> spring &lt;<a href=3D"mailto:s=
pring-bounces@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Rob Shakir<br>
<b>Sent:</b> 16 May 2018 20:50<br>
<b>To:</b> SPRING WG List &lt;<a href=3D"mailto:spring@ietf.org" target=3D"=
_blank">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> [spring] Working Group Adoption Call for draft-filsfils-spr=
ing-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">Hi SPRING WG,<u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">This email initiates a two week call for working gro=
up adoption for=C2=A0draft-filsfils-spring-segment-routing-policy. Please i=
ndicate your support, or otherwise, for adopting this draft as a working gr=
oup item by
<b>30th May 2018</b>. We are particularly interested in hearing from workin=
g group members that are not co-authors of this draft.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">As part of the discussions of adopting this draft in=
to SPRING with the ADs and chairs of other WGs, there are a number of reque=
sts to the authors.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">1. Please clarify in the text traffic steering with =
&quot;SR policy&quot; and its relationship to other traffic engineering fun=
ctions. It seems to me that this work is generally describing how one selec=
ts and steers traffic into policies, rather
 than path calculation. Additional clarification of whether this is the cas=
e (or not), would be welcome to ensure that the relationship with other wor=
k is clear. We would ask the authors to consider whether sections 14.1-14.4=
 are required scope of this document.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">2.. Consider what the core content of this document =
is, and how it can be make as concise and clear as possible. There are some=
 specific suggestions that can be made here, but we would like to see this =
discussed with the working group.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Additionally, there are currently 17 authors listed =
on this document. Please trim this to &lt;=3D 5 front-page authors, utilisi=
ng a &quot;Contributors&quot; section if required for the others.. An appro=
ach to achieving this would be to list ~2 editors
 as the front-page authors.<u></u><u></u></p>
</div></div></div></div><div lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F=
72"><div class=3D"m_7899759888214640910WordSection1"><div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">In parallel to this adoption call, I will send an IP=
R call for this document. We will need all 17 authors to confirm their IPR =
position on this document.<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,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Bruno &amp; Rob.<u></u><u></u></p>
</div>
</div>
</div>
</div>

</blockquote></div>

--00000000000081dc7f056cb8bbab--


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To: Joel Halpern <jmh@joelhalpern.com>, gen-art@ietf.org
Cc: draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org, spring@ietf.org, ietf@ietf.org
References: <152632807068.10078.4478550408904407310@ietfa.amsl.com>
From: Ahmed Bashandy <abashandy.ietf@gmail.com>
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Subject: Re: [spring] Genart last call review of draft-ietf-spring-segment-routing-ldp-interop-11
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Thanks a lot for the review

The document specifies externally visible behavior that must be 
implemented by routers, otherwise SR and LDP routers cannot talk to each 
other. For example, section 4.2.2  specifies preference rules. Another 
example is the last two paragraphs in section 4.2.1. Hence I do not 
think it can be informational. A third example is section 4.2 which 
requires the existence of one SRMS in order for SR-only to speak to 
LDP-only routers

But I agree that a more crisp description of SRMS is warranted. I will 
add a section describing the SRMS functionality and specifying what to 
do when receiving both prefix-SID sub-tlv and SRMS advertisements in the 
next version, which I plan to send out in the next few days


Ahmed



On 5/14/18 1:01 PM, Joel Halpern wrote:
> Reviewer: Joel Halpern
> Review result: Ready with Issues
>
> I am the assigned Gen-ART reviewer for this draft. The General Area
> Review Team (Gen-ART) reviews all IETF documents being processed
> by the IESG for the IETF Chair.  Please treat these comments just
> like any other last call comments.
>
> For more information, please see the FAQ at
>
> <https://trac.ietf.org/trac/gen/wiki/GenArtfaq>.
>
> Document: draft-ietf-spring-segment-routing-ldp-interop-11
> Reviewer: Joel Halpern
> Review Date: 2018-05-14
> IETF LC End Date: 2018-05-24
> IESG Telechat date: Not scheduled for a telechat
>
> Summary: This document appears to be ready for publication as an RFC.  The
> question of whether it is an Informational RFC or a Proposed Standards track
> RFC is one that the ADs should examine.
>
> Major issues:
>      This document is quite readable, and quite useful.  If my reading below
>      (minor comment about section 4.2) is wrong, then everything is fine.
>      However, reading the text, it does not appear to define SRMS.  Rather, it
>      describes a good way to use SRMS to achive smooth SR - LDP integration and
>      migration.  As such, this seems to me to be a really good Informational
>      Document.
>
> Minor issues:
>      Section 4.2 states that it defines the SRMS (Segment Routing Mapping
>      Server).  Looking at the relevant routing protocol document, they point to
>      https://tools.ietf.org/html/draft-ietf-spring-conflict-resolution-05 as the
>      defining source for the SRMS.  And that document does appear to define the
>      SRMS.
>
> Nits/editorial comments:
>
>


From nobody Mon May 21 09:13:36 2018
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To: Ahmed Bashandy <abashandy.ietf@gmail.com>, gen-art@ietf.org
Cc: draft-ietf-spring-segment-routing-ldp-interop.all@ietf.org, spring@ietf.org, ietf@ietf.org
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Subject: Re: [spring] Genart last call review of draft-ietf-spring-segment-routing-ldp-interop-11
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Thank you.  I apologize for missing the other normative items.  With 
those, plus the elaboration on the SRMS, the status as PS makes good sense.

Yours,
Joel

On 5/21/18 11:45 AM, Ahmed Bashandy wrote:
> Thanks a lot for the review
> 
> The document specifies externally visible behavior that must be 
> implemented by routers, otherwise SR and LDP routers cannot talk to each 
> other. For example, section 4.2.2  specifies preference rules. Another 
> example is the last two paragraphs in section 4.2.1. Hence I do not 
> think it can be informational. A third example is section 4.2 which 
> requires the existence of one SRMS in order for SR-only to speak to 
> LDP-only routers
> 
> But I agree that a more crisp description of SRMS is warranted. I will 
> add a section describing the SRMS functionality and specifying what to 
> do when receiving both prefix-SID sub-tlv and SRMS advertisements in the 
> next version, which I plan to send out in the next few days
> 
> 
> Ahmed
> 
> 
> 
> On 5/14/18 1:01 PM, Joel Halpern wrote:
>> Reviewer: Joel Halpern
>> Review result: Ready with Issues
>>
>> I am the assigned Gen-ART reviewer for this draft. The General Area
>> Review Team (Gen-ART) reviews all IETF documents being processed
>> by the IESG for the IETF Chair.  Please treat these comments just
>> like any other last call comments.
>>
>> For more information, please see the FAQ at
>>
>> <https://trac.ietf.org/trac/gen/wiki/GenArtfaq>.
>>
>> Document: draft-ietf-spring-segment-routing-ldp-interop-11
>> Reviewer: Joel Halpern
>> Review Date: 2018-05-14
>> IETF LC End Date: 2018-05-24
>> IESG Telechat date: Not scheduled for a telechat
>>
>> Summary: This document appears to be ready for publication as an RFC.  
>> The
>> question of whether it is an Informational RFC or a Proposed Standards 
>> track
>> RFC is one that the ADs should examine.
>>
>> Major issues:
>>      This document is quite readable, and quite useful.  If my reading 
>> below
>>      (minor comment about section 4.2) is wrong, then everything is fine.
>>      However, reading the text, it does not appear to define SRMS.  
>> Rather, it
>>      describes a good way to use SRMS to achive smooth SR - LDP 
>> integration and
>>      migration.  As such, this seems to me to be a really good 
>> Informational
>>      Document.
>>
>> Minor issues:
>>      Section 4.2 states that it defines the SRMS (Segment Routing Mapping
>>      Server).  Looking at the relevant routing protocol document, they 
>> point to
>>      
>> https://tools.ietf.org/html/draft-ietf-spring-conflict-resolution-05 
>> as the
>>      defining source for the SRMS.  And that document does appear to 
>> define the
>>      SRMS.
>>
>> Nits/editorial comments:
>>
>>
> 


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From: "Francois Clad (fclad)" <fclad@cisco.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
CC: Bruno Decraene <bruno.decraene@orange.com>, "draft-filsfils-spring-segment-routing-policy@ietf.org" <draft-filsfils-spring-segment-routing-policy@ietf.org>
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From: "Pablo Camarillo (pcamaril)" <pcamaril@cisco.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
Thread-Topic: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Date: Tue, 22 May 2018 07:38:38 +0000
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
Thread-Topic: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Hi Martin,

Thanks for the review. Any further comments here ? I will post the new versi=
on soon.

Cheers,

Gaurav

Sent from my iPhone

> On May 16, 2018, at 7:44 PM, Gaurav Dawra <gdawra.ietf@gmail.com> wrote:
>=20
> Hi Martin,
>=20
> Apologies from my end we had few internal authors conversations on the poi=
nts you have raised.
>=20
> Please find below my response. I will be happy to discuss further, if need=
ed.
>=20
> <Gaurav> inline...
>=20
>> On Apr 9, 2018, at 7:58 AM, Martin Stiemerling <mls.ietf@gmail.com> wrote=
:
>>=20
>> Hi Gaurav,
>>=20
>> This got lost on my end, sorry for this. The filter just moved these mess=
ages out of my sight... :-/
>>=20
>>> Am 15.02.18 um 05:47 schrieb Gaurav Dawra:
>>> Hey Martin,
>>> Sorry for late reply. Please see some comments inline[Gaurav]
>>>> On Jan 9, 2018, at 2:25 PM, Martin Stiemerling <mls.ietf@gmail.com <mai=
lto:mls.ietf@gmail.com>> wrote:
>>>>=20
>>>> Hi all,
>>>>=20
>>>> I've reviewed this document as part of the transport area review team's=
 ongoing effort to review key IETF documents. These comments were written pr=
imarily for the transport area directors, but are copied to the document's a=
uthors for their information and to allow them to address any issues raised.=
 When done at the time of IETF Last Call, the authors should consider this r=
eview together with any other last-call comments they receive. Please always=
 CC tsv-art@=E2=80=A6 if you reply to or forward this review.
>>>>=20
>>>> Summary:
>>>> This draft has serious issues in Section 7.1, 7.2 and in one part of Se=
ction3, described in the review, and needs to be rethought. The other sectio=
ns are good AFAIK.
>>>>=20
>>>>=20
>>>> Technicals:
>>>> The overall draft looks ok, but the three points below look strange and=
 need a fix before publication IMHO:
>>>>=20
>>>> Both Sections, 7.1. and 7.2., are describing ideas, but not well proven=
 funcationality and not even safe to use functionality. Both are some sort d=
iscussing that different paths in the network could be used by the end host t=
raffic. This sounds pretty much like the Path Aware Networking Proposed Rese=
arch Group (https://irtf.org/panrg) and hints to the fact that there is no c=
ommonly understand and accepted engineering solution in this space.
>>>>=20
>>>> Section 7.1:
>>>> [KANDULA04] is a really old reference that hasn't been followed up in r=
ecent times and even worse there is no evidence that this is going to work g=
ood enough or stable enough under real Internet traffic. Additionally, it is=
 more than unclear how any modern TCP implementation will react to this
>>> [Gaurav] Will get back on this.
>>=20
>> I will reply to the other email dicussing this.
> <Gaurav> I have replied to other thread.
>>=20
>>>>=20
>>>> Section 7.2:
>>>> This section describes an idea without detailing too much about any fur=
ther aspects. Further it changes the commonly accepted notion of what an end=
 host can do with the network. At best this would require a good definition o=
f what an end host in your setting is, e.g., a highly modified piece of (at l=
east) software that usually not found in OS availble on the market (yet?)
>>>> Further communicating instantaneous path characteristics to a central p=
oint is potentially a bad idea, as the data is already outdated when reporte=
d by any node.
>>> [Gaurav] I believe Authors are trying to highlight that Host which is de=
fined in (https://tools.ietf.org/html/draft-ietf-spring-segment-routing-15) c=
an influence the traffic based on the Calculations locally or jointly with t=
he controller. Implementations can decide how much Centralized -vs- localize=
d control is allowed at Host based on performance data collection.
>>=20
>> Performance data collection (monitoring?) isn't crucial when it comes to t=
imely (actually real-time) reaction. However, this section isn't just about p=
erformance data collection as it is about "Performance-aware routing" this s=
eems to try to interact in real-time with the network behavior of TCP. This i=
sn't even close to acceptable.
>>=20
>> I would be ok to say that it is useful to collect performance data for of=
fline analysis and improvement of the data network. However, this is at comp=
letely different magnitues of time scales.
>>=20
>> I would recommend to remove the TCP part from this section entirely.
> <Gaurav>Ack, will update in next rev:
>=20
> Section will read like this:
>=20
> ;
> =20
>    Knowing the path associated with flows/packets, the end host may
>    deduce certain characteristics of the path on its own, and
>    additionally use the information supplied with path information
>    pushed from the controller or received via pull request.  The host
>    may further share its path observations with the centralized agent,
>    so that the latter may keep up-to-date network health map to assist
>    other hosts with this information.
> =20
>    For example, an application A.1 at HostA may pin a flow destined
>    to HostZ via Spine node Node5 using label stack {16005, 16011}. The
>    application A.1 may collect information on packet loss, deduced from
>    Other offline mechanisms.  [There are some pingMesh mechanisms which=20=

>    Can be used here]
> =20
>     Through these mechanisms information to a centralized agent, e.g.
>    after a flow completes, or periodically for longer lived flows.
>    Next, using both local and/or global performance data, application
>    A.1 as well as other applications sharing the same resources in the
>    DC fabric may pick up the best path for the new flow, or update an
>    existing path (e.g.: when informed of congestion on an existing
>    path).
> =20
> ;
>=20
>>=20
>>=20
>>>>=20
>>>> Section 3, 3rd bullet point:
>>>> It is the foundation of TCP that the network is regarded as a black box=
 and that you infer from the transmission of packets what the current state o=
f the network path is. Inferring network path metrics (you mention SRTT, MSS=
, CWND ) is a bad idea, as this would required that all paths exhibit this a=
nd if not what is going to happen?
>>>> It could be an interesting research field to change many points in TCP'=
s behavior, but this once again points to the fact that this not the IETF wo=
rks but IRTF or elsewhere.
>>> [Gaurav] Martin, Authors are trying to suggest that TCP is rightly treat=
ing Network as Black Box. Authors are implying per path performance metrics a=
s not cached. Is there some change in text you are suggesting?
>>=20
>>=20
>> I would recommend to remove the 3rd bullet point completey. TCP isn't the=
 place to remember "good" or "bad" paths. This is something the network coul=
d decide, e.g., rerouting TCP flows within the network or changing the forwa=
rding path in the network for particular flows (if it is not routed).
>=20
> <Gaurav> Ack, after discussion, we will remove the Section 3 - 3rd bullet p=
oint. Will update in next rev - coming shortly.
>=20
>>=20
>> Kind regards,
>>=20
>>  Martin
>>=20
>=20

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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">Hi Martin,<div><br></div><div>Thanks for th=
e review. Any further comments here ? I will post the new version soon.</div=
><div><br></div><div>Cheers,</div><div><br></div><div>Gaurav<br><br><div id=3D=
"AppleMailSignature">Sent from my iPhone</div><div><br>On May 16, 2018, at 7=
:44 PM, Gaurav Dawra &lt;<a href=3D"mailto:gdawra.ietf@gmail.com">gdawra.iet=
f@gmail.com</a>&gt; wrote:<br><br></div><blockquote type=3D"cite"><div><meta=
 http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8"><div sty=
le=3D"word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-whi=
te-space;" dir=3D"auto" class=3D""><font size=3D"4" class=3D"">Hi Martin,</f=
ont><div class=3D""><font size=3D"4" class=3D""><br class=3D""></font></div>=
<div class=3D""><font size=3D"4" class=3D"">Apologies from my end we had few=
 internal authors conversations on the points you have raised.</font></div><=
div class=3D""><font size=3D"4" class=3D""><br class=3D""></font></div><div c=
lass=3D""><font size=3D"4" class=3D"">Please find below my response. I will b=
e happy to discuss further, if needed.</font></div><div class=3D""><font siz=
e=3D"4" class=3D""><br class=3D""></font></div><div class=3D""><font size=3D=
"4" class=3D"">&lt;Gaurav&gt; inline...<br class=3D""></font><div><font size=
=3D"4" class=3D""><br class=3D""></font><blockquote type=3D"cite" class=3D""=
><div class=3D""><font size=3D"4" class=3D"">On Apr 9, 2018, at 7:58 AM, Mar=
tin Stiemerling &lt;<a href=3D"mailto:mls.ietf@gmail.com" class=3D"">mls.iet=
f@gmail.com</a>&gt; wrote:</font></div><font size=3D"4" class=3D""><br class=
=3D"Apple-interchange-newline"></font><div class=3D""><div class=3D""><font s=
ize=3D"4" class=3D"">Hi Gaurav,<br class=3D""><br class=3D"">This got lost o=
n my end, sorry for this. The filter just moved these messages out of my sig=
ht... :-/<br class=3D""><br class=3D"">Am 15.02.18 um 05:47 schrieb Gaurav D=
awra:<br class=3D""></font><blockquote type=3D"cite" class=3D""><font size=3D=
"4" class=3D"">Hey Martin,<br class=3D"">Sorry for late reply. Please see so=
me comments inline[Gaurav]<br class=3D""></font><blockquote type=3D"cite" cl=
ass=3D""><font size=3D"4" class=3D"">On Jan 9, 2018, at 2:25 PM, Martin Stie=
merling &lt;<a href=3D"mailto:mls.ietf@gmail.com" class=3D"">mls.ietf@gmail.=
com</a> &lt;<a href=3D"mailto:mls.ietf@gmail.com" class=3D"">mailto:mls.ietf=
@gmail.com</a>&gt;&gt; wrote:<br class=3D""><br class=3D"">Hi all,<br class=3D=
""><br class=3D"">I've reviewed this document as part of the transport area r=
eview team's ongoing effort to review key IETF documents. These comments wer=
e written primarily for the transport area directors, but are copied to the d=
ocument's authors for their information and to allow them to address any iss=
ues raised. When done at the time of IETF Last Call, the authors should cons=
ider this review together with any other last-call comments they receive. Pl=
ease always CC tsv-art@=E2=80=A6 if you reply to or forward this review.<br c=
lass=3D""><br class=3D"">Summary:<br class=3D"">This draft has serious issue=
s in Section 7.1, 7.2 and in one part of Section3, described in the review, a=
nd needs to be rethought. The other sections are good AFAIK.<br class=3D""><=
br class=3D""><br class=3D"">Technicals:<br class=3D"">The overall draft loo=
ks ok, but the three points below look strange and need a fix before publica=
tion IMHO:<br class=3D""><br class=3D"">Both Sections, 7.1. and 7.2., are de=
scribing ideas, but not well proven funcationality and not even safe to use f=
unctionality. Both are some sort discussing that different paths in the netw=
ork could be used by the end host traffic. This sounds pretty much like the P=
ath Aware Networking Proposed Research Group (<a href=3D"https://irtf.org/pa=
nrg" class=3D"">https://irtf.org/panrg</a>) and hints to the fact that there=
 is no commonly understand and accepted engineering solution in this space.<=
br class=3D""><br class=3D"">Section 7.1:<br class=3D"">[KANDULA04] is a rea=
lly old reference that hasn't been followed up in recent times and even wors=
e there is no evidence that this is going to work good enough or stable enou=
gh under real Internet traffic. Additionally, it is more than unclear how an=
y modern TCP implementation will react to this<br class=3D""></font></blockq=
uote><font size=3D"4" class=3D"">[Gaurav] Will get back on this.<br class=3D=
""></font></blockquote><font size=3D"4" class=3D""><br class=3D"">I will rep=
ly to the other email dicussing this.<br class=3D""></font></div></div></blo=
ckquote><font size=3D"4" class=3D"">&lt;Gaurav&gt; I have replied to other t=
hread.<br class=3D""></font><blockquote type=3D"cite" class=3D""><div class=3D=
""><div class=3D""><font size=3D"4" class=3D""><br class=3D""></font><blockq=
uote type=3D"cite" class=3D""><blockquote type=3D"cite" class=3D""><font siz=
e=3D"4" class=3D""><br class=3D"">Section 7.2:<br class=3D"">This section de=
scribes an idea without detailing too much about any further aspects. Furthe=
r it changes the commonly accepted notion of what an end host can do with th=
e network. At best this would require a good definition of what an end host i=
n your setting is, e.g., a highly modified piece of (at least) software that=
 usually not found in OS availble on the market (yet?)<br class=3D"">Further=
 communicating instantaneous path characteristics to a central point is pote=
ntially a bad idea, as the data is already outdated when reported by any nod=
e.<br class=3D""></font></blockquote><font size=3D"4" class=3D"">[Gaurav] I b=
elieve Authors are trying to highlight that Host which is defined in (<a hre=
f=3D"https://tools.ietf.org/html/draft-ietf-spring-segment-routing-15" class=
=3D"">https://tools.ietf.org/html/draft-ietf-spring-segment-routing-15</a>) c=
an influence the traffic based on the Calculations locally or jointly with t=
he controller. Implementations can decide how much Centralized -vs- localize=
d control is allowed at Host based on performance data collection.<br class=3D=
""></font></blockquote><font size=3D"4" class=3D""><br class=3D"">Performanc=
e data collection (monitoring?) isn't crucial when it comes to timely (actua=
lly real-time) reaction. However, this section isn't just about performance d=
ata collection as it is about "Performance-aware routing" this seems to try t=
o interact in real-time with the network behavior of TCP. This isn't even cl=
ose to acceptable.<br class=3D""><br class=3D"">I would be ok to say that it=
 is useful to collect performance data for offline analysis and improvement o=
f the data network. However, this is at completely different magnitues of ti=
me scales.<br class=3D""><br class=3D"">I would recommend to remove the TCP p=
art from this section entirely.<br class=3D""></font></div></div></blockquot=
e><div><font size=3D"4" class=3D"">&lt;Gaurav&gt;Ack, will update in next re=
v:</font></div><div><font size=3D"4" class=3D""><br class=3D""></font></div>=
<div><font size=3D"4" class=3D"">Section will read like this:</font></div><d=
iv><font size=3D"4" class=3D""><br class=3D""></font></div><div><div class=3D=
""><div style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><font size=3D"4" clas=
s=3D"">;<o:p class=3D""></o:p></font></div></div><div class=3D""><div style=3D=
"margin: 0cm 0cm 0.0001pt;" class=3D""><o:p class=3D""><font size=3D"4" clas=
s=3D"">&nbsp;</font></o:p></div></div><div class=3D""><pre style=3D"margin: 0=
cm 0cm 0.0001pt; break-before: page; font-variant-ligatures: normal; orphans=
: 2; widows: 2;" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"fo=
nt-size: 18px;" class=3D"">&nbsp;&nbsp; Knowing the path associated with flo=
ws/packets, the end host may<o:p class=3D""></o:p></font></i></pre><pre styl=
e=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georg=
ia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; deduce certain charac=
teristics of the path on its own, and<o:p class=3D""></o:p></font></i></pre>=
<pre style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; additionally=
 use the information supplied with path information<o:p class=3D""></o:p></f=
ont></i></pre><pre style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D=
""><font face=3D"Georgia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp;=
 pushed from the controller or received via pull request.&nbsp; The host<o:p=
 class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm 0.0001pt;" c=
lass=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-size: 18px;" cl=
ass=3D"">&nbsp;&nbsp; may further share its path observations with the centr=
alized agent,<o:p class=3D""></o:p></font></i></pre><pre style=3D"margin: 0c=
m 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"fo=
nt-size: 18px;" class=3D"">&nbsp;&nbsp; so that the latter may keep up-to-da=
te network health map to assist<o:p class=3D""></o:p></font></i></pre><pre s=
tyle=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Ge=
orgia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; other hosts with t=
his information.<o:p class=3D""></o:p></font></i></pre><pre style=3D"margin:=
 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" style=3D=
"font-size: 18px;" class=3D"">&nbsp;</font></i></pre><pre style=3D"margin: 0=
cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"f=
ont-size: 18px;" class=3D"">&nbsp;&nbsp; For example, an application A.1 at H=
ostA may pin a flow destined<o:p class=3D""></o:p></font></i></pre><pre styl=
e=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georg=
ia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; to HostZ via Spine no=
de Node5 using label stack {16005, 16011}. The<o:p class=3D""></o:p></font><=
/i></pre><pre style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><font face=3D"G=
eorgia" size=3D"4" class=3D""><i class=3D"">&nbsp;&nbsp; application A.1 may=
 collect information on packet loss, deduced from</i><o:p class=3D""></o:p><=
/font></pre><pre style=3D"margin: 0cm 0cm 0.0001pt; break-before: page; font=
-variant-ligatures: normal; orphans: 2; widows: 2;" class=3D""><font face=3D=
"Georgia" size=3D"4" class=3D""><i class=3D"">&nbsp;&nbsp; Other offline mec=
hanisms. &nbsp;[There are some pingMesh mechanisms which </i><o:p class=3D""=
></o:p></font></pre><pre style=3D"margin: 0cm 0cm 0.0001pt; break-before: pa=
ge; font-variant-ligatures: normal; orphans: 2; widows: 2;" class=3D""><font=
 face=3D"Georgia" size=3D"4" class=3D""><i class=3D"">&nbsp;&nbsp;&nbsp;Can b=
e used here]</i><o:p class=3D""></o:p></font></pre><pre style=3D"margin: 0cm=
 0cm 0.0001pt; break-before: page; font-variant-ligatures: normal; orphans: 2=
; widows: 2;" class=3D""><o:p class=3D""><font face=3D"Georgia" style=3D"fon=
t-size: 18px;" class=3D"">&nbsp;</font></o:p></pre><pre style=3D"margin: 0cm=
 0cm 0.0001pt; break-before: page; font-variant-ligatures: normal; orphans: 2=
; widows: 2;" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-=
size: 18px;" class=3D"">&nbsp;&nbsp;&nbsp; Through these mechanisms informat=
ion to a centralized agent, e.g.<o:p class=3D""></o:p></font></i></pre><pre s=
tyle=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Ge=
orgia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; after a flow compl=
etes, or periodically for longer lived flows.<o:p class=3D""></o:p></font></=
i></pre><pre style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><f=
ont face=3D"Georgia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; Next=
, using both local and/or global performance data, application<o:p class=3D"=
"></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""=
><i class=3D""><font face=3D"Georgia" style=3D"font-size: 18px;" class=3D"">=
&nbsp;&nbsp; A.1 as well as other applications sharing the same resources in=
 the<o:p class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm 0.0=
001pt;" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-size: 1=
8px;" class=3D"">&nbsp;&nbsp; DC fabric may pick up the best path for the ne=
w flow, or update an<o:p class=3D""></o:p></font></i></pre><pre style=3D"mar=
gin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" styl=
e=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; existing path (e.g.: when inf=
ormed of congestion on an existing<o:p class=3D""></o:p></font></i></pre><pr=
e style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D=
"Georgia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; path).<o:p clas=
s=3D""></o:p></font></i></pre><div class=3D""><div style=3D"margin: 0cm 0cm 0=
.0001pt;" class=3D""><o:p class=3D""><font size=3D"4" class=3D"">&nbsp;</fon=
t></o:p></div></div><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt;"=
 class=3D""><font size=3D"4" class=3D"">;</font></div></div></div></div><div=
><font size=3D"4" class=3D""><br class=3D""></font></div><blockquote type=3D=
"cite" class=3D""><div class=3D""><div class=3D""><font size=3D"4" class=3D"=
"><br class=3D""><br class=3D""></font><blockquote type=3D"cite" class=3D"">=
<blockquote type=3D"cite" class=3D""><font size=3D"4" class=3D""><br class=3D=
"">Section 3, 3rd bullet point:<br class=3D"">It is the foundation of TCP th=
at the network is regarded as a black box and that you infer from the transm=
ission of packets what the current state of the network path is. Inferring n=
etwork path metrics (you mention SRTT, MSS, CWND ) is a bad idea, as this wo=
uld required that all paths exhibit this and if not what is going to happen?=
<br class=3D"">It could be an interesting research field to change many poin=
ts in TCP's behavior, but this once again points to the fact that this not t=
he IETF works but IRTF or elsewhere.<br class=3D""></font></blockquote><font=
 size=3D"4" class=3D"">[Gaurav] Martin, Authors are trying to suggest that T=
CP is rightly treating Network as Black Box. Authors are implying per path p=
erformance metrics as not cached. Is there some change in text you are sugge=
sting?<br class=3D""></font></blockquote><font size=3D"4" class=3D""><br cla=
ss=3D""><br class=3D"">I would recommend to remove the 3rd bullet point comp=
letey. TCP isn't the place to remember "good" or "bad" paths. This is someth=
ing the network could decide, e.g., rerouting TCP flows within the network o=
r changing the forwarding path in the network for particular flows (if it is=
 not routed).<br class=3D""></font></div></div></blockquote><div><font size=3D=
"4" class=3D""><br class=3D""></font></div><div><font size=3D"4" class=3D"">=
&lt;Gaurav&gt; Ack, after discussion, we will remove the Section 3 - 3rd bul=
let point.&nbsp;Will update in next rev - coming shortly.</font></div><font s=
ize=3D"4" class=3D""><br class=3D""></font><blockquote type=3D"cite" class=3D=
""><div class=3D""><div class=3D""><font size=3D"4" class=3D""><br class=3D"=
">Kind regards,<br class=3D""><br class=3D""> &nbsp;Martin<br class=3D""><br=
 class=3D""></font></div></div></blockquote></div><br class=3D""></div></div=
></div></blockquote></div></body></html>=

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From: "Jose Liste (jliste)" <jliste@cisco.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
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From: Gniewomir Krol <gniewomir.krol@gmail.com>
Date: Wed, 23 May 2018 13:07:42 -0700
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/bBMJeZNaQIqGtIBN0QHpxU1h4Lg>
Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Content-Type: text/plain; charset="UTF-8"

Support

thanks,
pkrol@google.com

On Wed, May 23, 2018 at 9:43 AM Jose Liste (jliste) <jliste@cisco.com>
wrote:

> Support as co-author
>
>
>
> Regards,
>
> Jose
>
>
>
> *From:* spring <spring-bounces@ietf.org> *On Behalf Of *Rob Shakir
> *Sent:* Wednesday, May 16, 2018 8:20 AM
> *To:* SPRING WG List <spring@ietf.org>
> *Subject:* [spring] Working Group Adoption Call for
> draft-filsfils-spring-segment-routing-policy
>
>
>
> Hi SPRING WG,
>
>
>
> This email initiates a two week call for working group adoption
> for draft-filsfils-spring-segment-routing-policy. Please indicate your
> support, or otherwise, for adopting this draft as a working group item by *30th
> May 2018*. We are particularly interested in hearing from working group
> members that are not co-authors of this draft.
>
>
>
> As part of the discussions of adopting this draft into SPRING with the ADs
> and chairs of other WGs, there are a number of requests to the authors.
>
>
>
> 1. Please clarify in the text traffic steering with "SR policy" and its
> relationship to other traffic engineering functions. It seems to me that
> this work is generally describing how one selects and steers traffic into
> policies, rather than path calculation. Additional clarification of whether
> this is the case (or not), would be welcome to ensure that the relationship
> with other work is clear. We would ask the authors to consider whether
> sections 14.1-14.4 are required scope of this document.
>
>
>
> 2.. Consider what the core content of this document is, and how it can be
> make as concise and clear as possible. There are some specific suggestions
> that can be made here, but we would like to see this discussed with the
> working group.
>
>
>
> Additionally, there are currently 17 authors listed on this document.
> Please trim this to <= 5 front-page authors, utilising a "Contributors"
> section if required for the others.. An approach to achieving this would be
> to list ~2 editors as the front-page authors.
>
>
>
> In parallel to this adoption call, I will send an IPR call for this
> document. We will need all 17 authors to confirm their IPR position on this
> document.
>
>
>
> Thanks,
>
> Bruno & Rob.
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">Sup=
port</div><div class=3D"gmail_default" style=3D"font-size:small"><br></div>=
<div class=3D"gmail_default" style=3D"font-size:small">thanks,</div><div cl=
ass=3D"gmail_default" style=3D"font-size:small"><a href=3D"mailto:pkrol@goo=
gle.com">pkrol@google.com</a></div></div><br><div class=3D"gmail_quote"><di=
v dir=3D"ltr">On Wed, May 23, 2018 at 9:43 AM Jose Liste (jliste) &lt;<a hr=
ef=3D"mailto:jliste@cisco.com">jliste@cisco.com</a>&gt; wrote:<br></div><bl=
ockquote class=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"#0563C1" vlink=3D"#954F72">
<div class=3D"m_-2366884178157610892WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1f497d">Support as co-author<u></u><u></u></s=
pan></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1f497d"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1f497d">Regards,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1f497d">Jose<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1f497d"><u></u>=C2=A0<u></u></span></p>
<div>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><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"> spring &lt;<a href=3D"mailto:s=
pring-bounces@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Rob Shakir<br>
<b>Sent:</b> Wednesday, May 16, 2018 8:20 AM<br>
<b>To:</b> SPRING WG List &lt;<a href=3D"mailto:spring@ietf.org" target=3D"=
_blank">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> [spring] Working Group Adoption Call for draft-filsfils-spr=
ing-segment-routing-policy<u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">Hi SPRING WG, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">This email initiates a two week call for working gro=
up adoption for=C2=A0draft-filsfils-spring-segment-routing-policy. Please i=
ndicate your support, or otherwise, for adopting this draft as a working gr=
oup item by
<b>30th May 2018</b>. We are particularly interested in hearing from workin=
g group members that are not co-authors of this draft.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">As part of the discussions of adopting this draft in=
to SPRING with the ADs and chairs of other WGs, there are a number of reque=
sts to the authors.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">1. Please clarify in the text traffic steering with =
&quot;SR policy&quot; and its relationship to other traffic engineering fun=
ctions. It seems to me that this work is generally describing how one selec=
ts and steers traffic into policies, rather
 than path calculation. Additional clarification of whether this is the cas=
e (or not), would be welcome to ensure that the relationship with other wor=
k is clear. We would ask the authors to consider whether sections 14.1-14.4=
 are required scope of this document.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">2.. Consider what the core content of this document =
is, and how it can be make as concise and clear as possible. There are some=
 specific suggestions that can be made here, but we would like to see this =
discussed with the working group.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Additionally, there are currently 17 authors listed =
on this document. Please trim this to &lt;=3D 5 front-page authors, utilisi=
ng a &quot;Contributors&quot; section if required for the others.. An appro=
ach to achieving this would be to list ~2 editors
 as the front-page authors.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">In parallel to this adoption call, I will send an IP=
R call for this document. We will need all 17 authors to confirm their IPR =
position on this document.<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,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Bruno &amp; Rob.<u></u><u></u></p>
</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>

--00000000000014b7aa056ce517fc--


From nobody Thu May 24 08:45:29 2018
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From: Takeshi Takahashi <takeshi_takahashi@nict.go.jp>
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Subject: [spring] Secdir last call review of draft-ietf-spring-segment-routing-ldp-interop-11
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Reviewer: Takeshi Takahashi
Review result: Ready

I have only minor comments.

The section said that security issues in this document are mostly inherited
from the underlying techniques/specs. Some pointers to RFC documents describing
the security issues of MPLS dataplane, routing protocols, and so on (if any)
could help readers. Having these pointers in this section will not harm readers.

Some typo:
In Section 1: "co- exist" (unnecessary space)-> "co-exist"
In Section 2.1: "switches it our" -> "switches it out"

Spelling out is appreciated: LDP and FEC

Clarification question:
Regarding the paragraph "P6 does not have an LDP binding from its next-hop P5
for the FEC "PE1". However P6 has an SR node segment to the IGP route "PE1".
Hence, P6 forwards the packet to P5 and swaps its local LDP-label for FEC "PE1"
by the equivalent node segment (i.e. 101)."(in Section 4.1), I have got the
impression that the behavior of P6 is not defined by any other specs (incl,
LDP) and is a behavior this document newly defines, correct?  If it is correct,
must P6 support this behavior? or is it just optional? I am not familiar with
these routing protocols, thus clarification is appreciated.


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Hello Working Group,



This email starts a Working Group Last Call on draft-ietf-spring-segment-ro=
uting-mpls-13 [1] which is considered mature and ready for a final working =
group review.



Please read this document if you haven't read the most recent version yet, =
and send your comments to the list, no later than *June 08*.



As a reminder, this document had already passed a WGLC more than a year ago=
 on version -06 [2], had been sent to the AD but then returned to the WG.

Since then, the document has significantly changed, so please read it again=
. In particular, it now includes the resolution in case of incoming label c=
ollision. Hence it killed draft-ietf-spring-conflict-resolution.



Both co-chairs co-author this document, hence:

- Shraddha has agreed to be the document shepherd. Thank you Shraddha.

- Martin, our AD, has agreed to evaluate the WG consensus.



Thank you,

Bruno, Rob



[1] https://tools.ietf.org/html/draft-ietf-spring-segment-routing-mpls-13

[2] https://mailarchive.ietf.org/arch/msg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y



___________________________________________________________________________=
______________________________________________

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<div class=3D"WordSection1">
<pre><span lang=3D"EN-US">Hello Working Group,<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">&nbsp;&nbsp;&nbsp; <o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">This email starts a Working Group Last Call on dr=
aft-ietf-spring-segment-routing-mpls-13 [1] which is considered mature and =
ready for a final working group review.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">&nbsp;&nbsp;&nbsp; <o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Please read this document if you haven't read the=
 most recent version yet, and send your comments to the list, no later than=
 *June 08*.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></pre>
<pre><span lang=3D"EN-US">As a reminder, this document had already passed a=
 WGLC more than a year ago on version -06 [2], had been sent to the AD but =
then returned to the WG.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Since then, the document has significantly change=
d, so please read it again. In particular, it now includes the resolution i=
n case of incoming label collision. Hence it killed draft-ietf-spring-confl=
ict-resolution.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></pre>
<pre><span lang=3D"EN-US">Both co-chairs co-author this document, hence:<o:=
p></o:p></span></pre>
<pre><span lang=3D"EN-US">- Shraddha has agreed to be the document shepherd=
. Thank you Shraddha.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">- Martin, our AD, has agreed to evaluate the WG c=
onsensus.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">&nbsp;&nbsp;&nbsp; <o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Thank you,<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Bruno, Rob<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></pre>
<pre><span lang=3D"EN-US">[1] <a href=3D"https://tools.ietf.org/html/draft-=
ietf-spring-segment-routing-mpls-13">https://tools.ietf.org/html/draft-ietf=
-spring-segment-routing-mpls-13</a><o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">[2] <a href=3D"https://mailarchive.ietf.org/arch/=
msg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y">https://mailarchive.ietf.org/arch/m=
sg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y</a><o:p></o:p></span></pre>
<pre><span lang=3D"EN-US" style=3D"font-family:&quot;Arial&quot;,&quot;sans=
-serif&quot;"><o:p>&nbsp;</o:p></span></pre>
</div>
<PRE>______________________________________________________________________=
___________________________________________________

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 ce message par erreur, veuillez le signaler
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Orange decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.

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.
If you have received this email in error, please notify the sender and dele=
te this message and its attachments.
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modified, changed or falsified.
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</PRE></body>
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From: <bruno.decraene@orange.com>
To: "mpls@ietf.org" <mpls@ietf.org>
CC: SPRING WG List <spring@ietf.org>
Thread-Topic: WG Last Call for draft-ietf-spring-segment-routing-mpls-13
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Subject: [spring] FW: WG Last Call for draft-ietf-spring-segment-routing-mpls-13
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Hi MPLS WG, MPLS chairs,

The SPRING WG is starting the working group last call on draft-ietf-spring-=
segment-routing-mpls-13.

This document instantiates the generic segment routing architecture on the =
MPLS data plane.
This document is expected to be in line with the MPLS architecture and to n=
ot change the MPLS data plane.

You may want to review it. Please send your comments to the _SPRING_ mailin=
g list.

Thank you,
Bruno

From: bruno.decraene@orange.com [mailto:bruno.decraene@orange.com]
Sent: Thursday, May 24, 2018 7:14 PM
To: SPRING WG List
Cc: draft-ietf-spring-segment-routing-mpls@ietf.org
Subject: WG Last Call for draft-ietf-spring-segment-routing-mpls-13


Hello Working Group,



This email starts a Working Group Last Call on draft-ietf-spring-segment-ro=
uting-mpls-13 [1] which is considered mature and ready for a final working =
group review.



Please read this document if you haven't read the most recent version yet, =
and send your comments to the list, no later than *June 08*.



As a reminder, this document had already passed a WGLC more than a year ago=
 on version -06 [2], had been sent to the AD but then returned to the WG.

Since then, the document has significantly changed, so please read it again=
. In particular, it now includes the resolution in case of incoming label c=
ollision. Hence it killed draft-ietf-spring-conflict-resolution.



Both co-chairs co-author this document, hence:

- Shraddha has agreed to be the document shepherd. Thank you Shraddha.

- Martin, our AD, has agreed to evaluate the WG consensus.



Thank you,

Bruno, Rob



[1] https://tools.ietf.org/html/draft-ietf-spring-segment-routing-mpls-13

[2] https://mailarchive.ietf.org/arch/msg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y



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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Hi MPLS WG, MP=
LS chairs,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">The SPRING WG =
is starting the working group last call on draft-ietf-spring-segment-routin=
g-mpls-13.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">This document =
instantiates the generic segment routing architecture on the MPLS data plan=
e.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">This document =
is expected to be in line with the MPLS architecture and to not change the =
MPLS data plane.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">You may want t=
o review it. Please send your comments to the _<i>SPRING</i>_ mailing list.=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Thank you,<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Bruno<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<div>
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<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;;mso-fareast-language:FR">From:</span><=
/b><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:FR"> bruno.decraene@orange.com [mailto:b=
runo.decraene@orange.com]
<br>
<b>Sent:</b> Thursday, May 24, 2018 7:14 PM<br>
<b>To:</b> SPRING WG List<br>
<b>Cc:</b> draft-ietf-spring-segment-routing-mpls@ietf.org<br>
<b>Subject:</b> WG Last Call for draft-ietf-spring-segment-routing-mpls-13<=
o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<pre><span lang=3D"EN-US">Hello Working Group,<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">&nbsp;&nbsp;&nbsp; <o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">This email starts a Working Group Last Call on dr=
aft-ietf-spring-segment-routing-mpls-13 [1] which is considered mature and =
ready for a final working group review.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">&nbsp;&nbsp;&nbsp; <o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Please read this document if you haven't read the=
 most recent version yet, and send your comments to the list, no later than=
 *June 08*.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></pre>
<pre><span lang=3D"EN-US">As a reminder, this document had already passed a=
 WGLC more than a year ago on version -06 [2], had been sent to the AD but =
then returned to the WG.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Since then, the document has significantly change=
d, so please read it again. In particular, it now includes the resolution i=
n case of incoming label collision. Hence it killed draft-ietf-spring-confl=
ict-resolution.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></pre>
<pre><span lang=3D"EN-US">Both co-chairs co-author this document, hence:<o:=
p></o:p></span></pre>
<pre><span lang=3D"EN-US">- Shraddha has agreed to be the document shepherd=
. Thank you Shraddha.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">- Martin, our AD, has agreed to evaluate the WG c=
onsensus.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">&nbsp;&nbsp;&nbsp; <o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Thank you,<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Bruno, Rob<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></pre>
<pre><span lang=3D"EN-US">[1] <a href=3D"https://tools.ietf.org/html/draft-=
ietf-spring-segment-routing-mpls-13">https://tools.ietf.org/html/draft-ietf=
-spring-segment-routing-mpls-13</a><o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">[2] <a href=3D"https://mailarchive.ietf.org/arch/=
msg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y">https://mailarchive.ietf.org/arch/m=
sg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y</a><o:p></o:p></span></pre>
<pre><span lang=3D"EN-US" style=3D"font-family:&quot;Arial&quot;,&quot;sans=
-serif&quot;"><o:p>&nbsp;</o:p></span></pre>
</div>
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Orange decline toute responsabilite si ce message a ete altere, deforme ou =
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they should not be distributed, used or copied without authorisation.
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From: <bruno.decraene@orange.com>
To: SPRING WG List <spring@ietf.org>, "draft-ietf-spring-segment-routing-mpls@ietf.org" <draft-ietf-spring-segment-routing-mpls@ietf.org>
Thread-Topic: IPR Poll for draft-ietf-spring-segment-routing-mpls
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Date: Thu, 24 May 2018 17:28:13 +0000
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Hi SPRING WG,

In parallel to the WGLC for draft-ietf-spring-segment-routing-mpls, we woul=
d like to poll for IPR.

If you are aware of IPR that applies to draft-ietf-spring-segment-routing-m=
pls please respond to this email. If you are aware of IPR, please indicate =
whether it has been
disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and 5378=
 provide more details).

If you are an *author or contributor* please respond to this email regardle=
ss of whether or not you're aware of any IPR. If you are not an author or c=
ontributor, please explicitly respond only if you are aware of IPR that has=
 not yet been disclosed.

This document will not advance until IPR confirmations have been received f=
rom all authors and contributors.

Thanks,
Bruno & Rob.


___________________________________________________________________________=
______________________________________________

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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR">In parallel to the =
WGLC for draft-ietf-spring-segment-routing-mpls, we would like to poll for =
IPR.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR"><o:p>&nbsp;</o:p></=
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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR">If you are aware of=
 IPR that applies to draft-ietf-spring-segment-routing-mpls please respond =
to this email. If you are aware of IPR, please indicate
 whether it has been<o:p></o:p></span></p>
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family:&quot;Courier New&quot;;mso-fareast-language:FR">disclosed in accord=
ance with IETF IPR rules (RFCs 3979, 4879, 3669 and 5378 provide more detai=
ls).<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR">If you are an *auth=
or or contributor* please respond to this email regardless of whether or no=
t you're aware of any IPR. If you are not an author
 or contributor, please explicitly respond only if you are aware of IPR tha=
t has not yet been disclosed.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR">This document will =
not advance until IPR confirmations have been received from all authors and=
 contributors.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR"><o:p>&nbsp;</o:p></=
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<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;;mso-fareast-language:FR">Thanks,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;;mso-fareast-language:FR">Bruno &amp; Rob.<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
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Hi authors,

I've reviewed the document.
It looks good, thanks for your effort.

Please find below some comments, nothing major.
Thanks for considering them as part of the WG LC.

Thanks,
Regards,
Bruno

---
Somewhere in Abstract/1. Introduction/2. MPLS Instantiation of Segment Rout=
ing

MPLS Instantiation of Segment Routing is sometimes referred to with two dif=
ferent names: MPLS-SR or SR-MPLS which seems sub-optimal.
[I.D.-ietf-spring-segment-routing] uses the term SR-MPLS. May this term sho=
uld also be used at least once in this document.

---
=A72.2
"using the SRGB of the node"
Please expand SRGB on first used. (in -13, this term is expand on =A72.3 wh=
ich is after)

---
=A72.3
OLD: Just like SRGB, the SRLB need not be a single
   contiguous range of label, except the SRGB MUST only be used to
   instantiate global SIDs into the MPLS forwarding plane.

NEW:
Just like SRGB, the SRLB need not be a single
   contiguous range of label.

(simplify the sentence. The rule is already stated before in this section)

---
[SRLB]
"Hence it is
   specified the same way and follows the same rules SRGB is specified
   above in this sub-section."

Sentence is not crystal clear and could probably be rephrased.
More importantly, the sentence is incorrect: the SRLB does not follow the l=
ast SRGB rules ( "The list of label ranges MUST only be used to instantiate=
 global SIDs into the MPLS forwarding plane")

------
=A72.4

"0 =3D< I < size."
"size =3D Lh(1)- Ll(1) + 1 + Lh(2)- Ll(2) + 1 + ... + Lh(k)- Ll(k) + 1"

Algorithm looks good to me. Yet starting the index at 0 for SID index, and =
1 for SRGB sub-blocks may be slightly misleading. "Lh(1)- Ll(1)" seems only=
 defined in this document so an option would be to start with "Lh(0)- Ll(0)=
" (this would impact the algo: :s/j =3D 1/ j =3D 0)
Up to you.

------
=A72.5

OLD: MPLS Incoming Label MAP
NEW: MPLS Incoming Label Map

(as per https://tools.ietf.org/html/rfc3031#section-3.11 )
--
OLD: o  (Endpoint, Color) representing an SR policy [I.D. filsfils-spring-s=
egment-routing-policy]
NEW: o  an SR policy [I.D.-ietf-spring-segment-routing]

(Otherwise, this would likely require a _Normative_ reference to I.D. filsf=
ils-spring-segment-routing-policy which would significantly delay the RFC p=
ublication of this document. While [I.D.-ietf-spring-segment-routing is alr=
eady in the RFC editor queue and does define a SR policy. )

--
OLD:

   o  (Prefix, Routing Instance, Topology, Algorithm), where a topology
      is identified by a set of links with metrics. For the purpose of
      incoming label collision resolution, the same numerical value
      SHOULD be used on all routers to identify the same set of links
      with metrics.

(It's not crystal clear what "numerical value" refers to, given the list (P=
refix, Routing Instance, Topology, Algorithm))

NEW1:
   o  (Prefix, Routing Instance, Topology, Algorithm), where a topology
      is identified by a set of links with metrics. For the purpose of
      incoming label collision resolution, the same Topology numerical value
      SHOULD be used on all routers to identify the same set of links
      with metrics.


NEW2:
   o  (Prefix, Routing Instance, Topology, Algorithm). A Topology
      identifies a set of links with metrics. For the purpose of
      incoming label collision resolution, the same Topology numerical value
      SHOULD be used on all routers to identify the same set of links
      with metrics.

-----
=A72.5.1

"       o All addresses are represented in 128 bits as follows

            . IPv6 address is encoded natively

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

       o All prefixes are represented by 128.

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

            . The prefix length is encoded before the prefix"



"All prefixes are represented by 128."
128 what? Could be bits, but this does not fit with the addition of the pre=
fix length.

"The prefix length is encoded before the prefix"
using a field of what size?


Do we (really) need 2 different encodings for prefix and address? Especiall=
y since the rest of the algorithm does not make the difference:
   "o  Encode the remaining set of FECs as follows

       o Prefix, Routing Instance, Topology, Algorithm: (Prefix Length,
         Prefix, SR Algorithm, routing_instance_id, Topology)"
---
=A72.5.2. Redistribution between Routing Protocol Instances


"   o  If the receiving instance's SRGB is the same as the SRGB of origin
      instance, THEN

       o the index is redistributed with the route

   o  Else

       o the index is not redistributed and if needed it is the duty of
         the receiving instance to allocate a fresh index relative to
         its own SRGB"

With a strict interpretation of this rule, when one increases the size of t=
he SRGB, all indexes from redistributed prefixes will be withdrawn because =
it's unlikely that we can guaranty that the change of both SRGB be atomic.
Could this be accommodated? e.g. by only using the SRBG below the index ? i=
.e SRGB [0;index] or just the mapped label in both SRGB?
---
=A72.6
OLD:
In the general case, the ingress node may not have exactly have the
   same data of the receiving node, so the result may be different.

NEW:
In the general case, the ingress node may not have exactly the
   same data of the receiving node, so the result may be different.

----
=A72.10

OLD
   This document covers the calculation of outgoing label for the top
   label only. The case where outgoing label is not the top label and is
   part of a stack of labels that instantiates a routing policy or a
   traffic engineering tunnel is covered in other documents such as
   [I.D.filsfils-spring-segment-routing-policy].

This may be understood as requiring a _normative_ reference for [I.D.filsfi=
ls-spring-segment-routing-policy], which would significantly delay the RFC =
publication of this document.

Proposed NEW1:
   This document covers the calculation of outgoing label for the top
   label only. Other cases are out of scope of this document.

Or NEW2:
  This document covers the calculation of outgoing label for the top
   label only. The case where outgoing label is not the top label and is
   part of a stack of labels that instantiates a routing policy or a
   traffic engineering tunnel is out of scope of this document.
--
=A72.10.1

"   Suppose an MCC on a router "R0" determines that PUSH or CONTINUE
   operation is to be applied to an incoming packet whose active SID is
   the global SID "Si" ..."

 My undertanding is that "whose" in "whose active SID" refers to the the "i=
ncoming packet". This seems to imply that the incoming packet is (already) =
labeled.
- This does not match the example used in the following paregraph, where th=
e incoming packet is IP.
 "An example of a method to determine the SID
   "Si" for PUSH operation is the case where IS-IS [I-D.ietf-isis-
   segment-routing-extensions] receives the prefix-SID "Si" sub-TLV
   advertised with prefix "P/m" in TLV 135 and the destination address
   of the incoming IPv4 packet is covered by the prefix "P/m"."
 - Also, you can't simply perform a PUSH on a received label packet. You fi=
rst need to POP or SWAP the incoming label.

May be proposed NEW:
   Suppose an MCC on a router "R0" determines that a PUSH or CONTINUE
   operation is to be applied to an incoming packet, related to the global =
SID "Si" ...
-----
=A72.10.1

OLD: If the neighbor "N" does not support SR or "I" does not satisfy
      the inequality specified in Section 2.4 for the SRGB of the
      neighbor "N"

May be a more generic sentence:

NEW   If the neighbor "N" does not support SR or advertises a SRGB invalid =
or too small,
 -----
=A72.10.1

OLD:
       o If it is possible to send the packet towards the neighbor "N"
          using standard MPLS forwarding behavior as specified in
          {RFC3031] and [RFC3032], then forward the packet. The method
          by which a router decides whether it is possible to send the
          packet to "N" or not is beyond the scope of this document. For
          example, the router "R0" can use the downstream label
          determined by another MCC, such as LDP [RFC5036], to send the
          packet.

The fall back to LDP seems like a mandated behavior. If so, the behavior se=
ems under-specified. In particular "out of scope of this document" does not=
 seem like a valid argument.

Possible NEW:
"       o If this neighbor "N" advertises a valid label for the same FEC vi=
a another MCC (e.g. LDP [RFC5036]), then forward the packet to N, using the=
 label advertised by this MCC.

----
2.11.2. Forwarding Behavior Corresponding to CONTINUE Operation for Local S=
IDs

  "A local SID on a router "R0" corresponds to a local label such as an
   IGP adj-SID. In such scenario, the outgoing label towards a next-hop
   "N" is determined by the MCC running on the router "R0"and the
   forwarding behavior for CONTINUE operation is identical to swap
   operation [RFC3032] on an MPLS label"

I'm not seeing a case where an IGP adj-SID would have "CONTINUE" as a forwa=
rding behavior.
And the SR architecture requires a NEXT operation:
"      When a node binds an Adj-SID to a local data-link L, the node MUST
       install the following FIB entry:

      Incoming Active Segment: V
      Ingress Operation: NEXT
      Egress Interface: L"

https://tools.ietf.org/html/draft-ietf-spring-segment-routing-15#section-3.4

A solution would be to simply remove "such as an IGP adj-SID"
---
=A73 IGP Segment examples

This section, also useful, is quite long and not normative for this STD tra=
ck doc. An option may be to move it to appendix.
Up to you.
---
=A73.1

"R2 is the next-hop along the shortest path towards R8. By applying
   the steps in Section 2.8 the local label downloaded to R1's FIB
   corresponding to the global SID index 8 is 1008 because the SRGB of
   R2 is [1000,5000] as shown in Figure 2."

 may be
OLD:  local label downloaded to R1's FIB
NEW:  local outgoing label downloaded to R1's FIB
 (because I would assume that by default, label downloaded in the FIB is pr=
obably the incomig label one)
 --
OLD: owned by the R8
NEW1: OLD: owned by R8
NEW2: OLD: owned by the node R8
--
"The packet arrives at router R2. Because the top label 1008
   corresponds to the IGP SID "8", which is the prefix-SID attached to
   the prefix 192.0.2.8/32 owned by the R8, then the instruction
   associated with the SID is "forward the packet using all ECMP/UCMP
   interfaces and all ECMP/UCMP next-hop(s) along the shortest path
   towards R8". "

IGP prefix-SID are typically forwarded along the ECMP shortest path. I'm no=
t sure where "UCMP" is coming from. Also "along the shortest path" seems to=
 be incompatible with UCMP.
--
"Because R3
   is the penultimate hop, R3 applies NEXT operation then sends the
   packet to R8."

   "penultimate hop" is a required but not sufficient reason. You are assum=
ing that R8 asked for PHP, but I'm not seeing this assumption stated in the=
 text.
---
"The NEXT operation results in popping the outer label
   and sending the packet as a pure IPv4 packet to R8. The

   In conclusion, "

OLD: The
NEW:
---
=A73.2 & =A73.3 & =A73.4 & =A73.5
" Using the
   calculation techniques specified in Section 2.10 and 2.11 the
   resulting label stack starting from the topmost label is <1002, 9001,
   1008>."

Actually section 2.10 only defines the calculation technique for the top la=
bel:

   "This document covers the calculation of outgoing label for the top
   label only. The case where outgoing label is not the top label and is
   part of a stack of labels that instantiates a routing policy or a
   traffic engineering tunnel is covered in other documents such as
   [I.D.filsfils-spring-segment-routing-policy]."
   https://tools.ietf.org/html/draft-ietf-spring-segment-routing-mpls-13#se=
ction-2.10

   Hence this document does not define the behavior for this example 2. You=
 would need to either extend this doc to cover the push of a stack of label=
/SID or remove these examples 2, 3, 4, 5
----
[RFC8174] to be added to normative references.


From: bruno.decraene@orange.com [mailto:bruno.decraene@orange.com]
Sent: Thursday, May 24, 2018 7:14 PM
To: SPRING WG List
Cc: draft-ietf-spring-segment-routing-mpls@ietf.org
Subject: WG Last Call for draft-ietf-spring-segment-routing-mpls-13


Hello Working Group,



This email starts a Working Group Last Call on draft-ietf-spring-segment-ro=
uting-mpls-13 [1] which is considered mature and ready for a final working =
group review.



Please read this document if you haven't read the most recent version yet, =
and send your comments to the list, no later than *June 08*.



As a reminder, this document had already passed a WGLC more than a year ago=
 on version -06 [2], had been sent to the AD but then returned to the WG.

Since then, the document has significantly changed, so please read it again=
. In particular, it now includes the resolution in case of incoming label c=
ollision. Hence it killed draft-ietf-spring-conflict-resolution.



Both co-chairs co-author this document, hence:

- Shraddha has agreed to be the document shepherd. Thank you Shraddha.

- Martin, our AD, has agreed to evaluate the WG consensus.



Thank you,

Bruno, Rob



[1] https://tools.ietf.org/html/draft-ietf-spring-segment-routing-mpls-13

[2] https://mailarchive.ietf.org/arch/msg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y



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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;;color:black">Hi authors,<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">I&#8217;ve rev=
iewed the document.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">It looks good,=
 thanks for your effort.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Please find be=
low some comments, nothing major.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Thanks for con=
sidering them as part of the WG LC.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Thanks,<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Regards,<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Bruno<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">---<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Somewhere in A=
bstract/1. Introduction/2. MPLS Instantiation of Segment Routing<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">MPLS Instantia=
tion of Segment Routing is sometimes referred to with two different names: =
MPLS-SR or SR-MPLS which seems sub-optimal.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">[I.D.-ietf-spr=
ing-segment-routing] uses the term SR-MPLS. May this term should also be us=
ed at least once in this document.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">---<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A72.2<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;using th=
e SRGB of the node&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Please expand =
SRGB on first used. (in -13, this term is expand on =A72.3 which is after)<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">---<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A72.3<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">OLD: Just like=
 SRGB, the SRLB need not be a single<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; c=
ontiguous range of label, except the SRGB MUST only be used to<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; i=
nstantiate global SIDs into the MPLS forwarding plane.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">NEW:
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Just like SRGB=
, the SRLB need not be a single<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; c=
ontiguous range of label.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">(simplify the =
sentence. The rule is already stated before in this section)<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">---<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">[SRLB]<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;Hence it=
 is<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; s=
pecified the same way and follows the same rules SRGB is specified<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; a=
bove in this sub-section.&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Sentence is no=
t crystal clear and could probably be rephrased.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">More important=
ly, the sentence is incorrect: the SRLB does not follow the last SRGB rules=
 ( &quot;The list of label ranges MUST only be used to instantiate
 global SIDs into the MPLS forwarding plane&quot;)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">------<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A72.4<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;0 =3D&lt=
; I &lt; size.&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;size =3D=
 Lh(1)- Ll(1) &#43; 1 &#43; Lh(2)- Ll(2) &#43; 1 &#43; ... &#43; Lh(k)- Ll(=
k) &#43; 1&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Algorithm look=
s good to me. Yet starting the index at 0 for SID index, and 1 for SRGB sub=
-blocks may be slightly misleading. &quot;Lh(1)- Ll(1)&quot; seems only
 defined in this document so an option would be to start with &quot;Lh(0)- =
Ll(0)&quot; (this would impact the algo: :s/j =3D 1/ j =3D 0)<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Up to you.<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">------<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A72.5<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">OLD: MPLS Inco=
ming Label MAP<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">NEW: MPLS Inco=
ming Label Map<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">(as per https:=
//tools.ietf.org/html/rfc3031#section-3.11 )<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">--<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">OLD: o&nbsp; (=
Endpoint, Color) representing an SR policy [I.D. filsfils-spring-segment-ro=
uting-policy]<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">NEW: o&nbsp; a=
n SR policy [I.D.-ietf-spring-segment-routing]<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">(Otherwise, th=
is would likely require a _Normative_ reference to I.D. filsfils-spring-seg=
ment-routing-policy which would significantly delay the RFC
 publication of this document. While [I.D.-ietf-spring-segment-routing is a=
lready in the RFC editor queue and does define a SR policy. )<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">--<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">OLD:<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; o=
&nbsp; (Prefix, Routing Instance, Topology, Algorithm), where a topology<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; is identified by a set of links with metrics. For the purp=
ose of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; incoming label collision resolution, the same numerical va=
lue<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; SHOULD be used on all routers to identify the same set of =
links<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; with metrics.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">(It's not crys=
tal clear what &quot;numerical value&quot; refers to, given the list (Prefi=
x, Routing Instance, Topology, Algorithm))<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">NEW1:<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; o=
&nbsp; (Prefix, Routing Instance, Topology, Algorithm), where a topology<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; is identified by a set of links with metrics. For the purp=
ose of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; incoming label collision resolution, the same Topology num=
erical value<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; SHOULD be used on all routers to identify the same set of =
links<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; with metrics.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">NEW2:<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; o=
&nbsp; (Prefix, Routing Instance, Topology, Algorithm). A Topology<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; identifies a set of links with metrics. For the purpose of=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; incoming label collision resolution, the same Topology num=
erical value<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; SHOULD be used on all routers to identify the same set of =
links<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; with metrics.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">-----<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A72.5.1<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp; o All addresses are represented in 128 bits as=
 follows<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; . IPv6 address is enco=
ded natively<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; . IPv4 address is enco=
ded in the most significant bits and<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the =
remaining bits are set to zero<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp; o All prefixes are represented by 128.<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; . A prefix is encoded =
in the most significant bits and the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; rema=
ining bits are set to zero.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; . The prefix length is=
 encoded before the prefix&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&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;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&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;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&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;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;All pref=
ixes are represented by 128.&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">128 what? Coul=
d be bits, but this does not fit with the addition of the prefix length.<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;The pref=
ix length is encoded before the prefix&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">using a field =
of what size?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Do we (really)=
 need 2 different encodings for prefix and address? Especially since the re=
st of the algorithm does not make the difference:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; &=
quot;o&nbsp; Encode the remaining set of FECs as follows<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp; o Prefix, Routing Instance, Topology, Algorithm: (Pr=
efix Length,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Prefix, SR Algorithm, routing_instance_i=
d, Topology)&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">---<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A72.5.2. Redi=
stribution between Routing Protocol Instances<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;&nbsp;&n=
bsp; o&nbsp; If the receiving instance's SRGB is the same as the SRGB of or=
igin<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; instance, THEN<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp; o the index is redistributed with the route<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; o=
&nbsp; Else<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp; o the index is not redistributed and if needed it is=
 the duty of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the receiving instance to allocate a fre=
sh index relative to<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; its own SRGB&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">With a strict =
interpretation of this rule, when one increases the size of the SRGB, all i=
ndexes from redistributed prefixes will be withdrawn because
 it's unlikely that we can guaranty that the change of both SRGB be atomic.=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Could this be =
accommodated? e.g. by only using the SRBG below the index ? i.e SRGB [0;ind=
ex] or just the mapped label in both SRGB?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">---<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A72.6<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">OLD:<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">In the general=
 case, the ingress node may not have exactly have the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; s=
ame data of the receiving node, so the result may be different.<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">NEW:<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">In the general=
 case, the ingress node may not have exactly the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; s=
ame data of the receiving node, so the result may be different.<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">----<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A72.10<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">OLD<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; T=
his document covers the calculation of outgoing label for the top<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; l=
abel only. The case where outgoing label is not the top label and is<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; p=
art of a stack of labels that instantiates a routing policy or a<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; t=
raffic engineering tunnel is covered in other documents such as<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; [=
I.D.filsfils-spring-segment-routing-policy].<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">This may be un=
derstood as requiring a _normative_ reference for [I.D.filsfils-spring-segm=
ent-routing-policy], which would significantly delay the RFC
 publication of this document.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Proposed NEW1:
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;This document covers the calculation of outgoing label for the top<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; l=
abel only. Other cases are out of scope of this document.<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Or NEW2:<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp; This do=
cument covers the calculation of outgoing label for the top<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; l=
abel only. The case where outgoing label is not the top label and is<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; p=
art of a stack of labels that instantiates a routing policy or a<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; t=
raffic engineering tunnel is out of scope of this document.<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">--&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A72.10.1<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;&nbsp;&n=
bsp; Suppose an MCC on a router &quot;R0&quot; determines that PUSH or CONT=
INUE<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; o=
peration is to be applied to an incoming packet whose active SID is<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; t=
he global SID &quot;Si&quot; ...&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;My under=
tanding is that &quot;whose&quot; in &quot;whose active SID&quot; refers to=
 the the &quot;incoming packet&quot;. This seems to imply that the incoming=
 packet is (already)
 labeled.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">- This does no=
t match the example used in the following paregraph, where the incoming pac=
ket is IP.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&quot;An=
 example of a method to determine the SID<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; &=
quot;Si&quot; for PUSH operation is the case where IS-IS [I-D.ietf-isis-<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; s=
egment-routing-extensions] receives the prefix-SID &quot;Si&quot; sub-TLV<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; a=
dvertised with prefix &quot;P/m&quot; in TLV 135 and the destination addres=
s<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; o=
f the incoming IPv4 packet is covered by the prefix &quot;P/m&quot;.&quot;<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;- Also, =
you can't simply perform a PUSH on a received label packet. You first need =
to POP or SWAP the incoming label.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">May be propose=
d NEW:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; S=
uppose an MCC on a router &quot;R0&quot; determines that a PUSH or CONTINUE=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; o=
peration is to be applied to an incoming packet, related to the global SID =
&quot;Si&quot; ...<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">-----<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A72.10.1<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">OLD: If the ne=
ighbor &quot;N&quot; does not support SR or &quot;I&quot; does not satisfy<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; the inequality specified in Section 2.4 for the SRGB of th=
e<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; neighbor &quot;N&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">May be a more =
generic sentence:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">NEW&nbsp;&nbsp=
; If the neighbor &quot;N&quot; does not support SR or advertises a SRGB in=
valid or too small,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;-----<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A72.10.1<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">OLD:<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp; o If it is possible to send the packet towards the n=
eighbor &quot;N&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; using standard MPLS forwarding beh=
avior as specified in<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {RFC3031] and [RFC3032], then forw=
ard the packet. The method<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; by which a router decides whether =
it is possible to send the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; packet to &quot;N&quot; or not is =
beyond the scope of this document. For<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; example, the router &quot;R0&quot;=
 can use the downstream label<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; determined by another MCC, such as=
 LDP [RFC5036], to send the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; packet.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">The fall back =
to LDP seems like a mandated behavior. If so, the behavior seems under-spec=
ified. In particular &quot;out of scope of this document&quot; does
 not seem like a valid argument.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Possible NEW:<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp; o If this neighbor &quot;N&quot; advertises a =
valid label for the same FEC via another MCC (e.g. LDP [RFC5036]), then for=
ward the packet to N, using
 the label advertised by this MCC.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">----<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">2.11.2. Forwar=
ding Behavior Corresponding to CONTINUE Operation for Local SIDs<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp; &quot;A=
 local SID on a router &quot;R0&quot; corresponds to a local label such as =
an<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; I=
GP adj-SID. In such scenario, the outgoing label towards a next-hop<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; &=
quot;N&quot; is determined by the MCC running on the router &quot;R0&quot;a=
nd the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; f=
orwarding behavior for CONTINUE operation is identical to swap<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; o=
peration [RFC3032] on an MPLS label&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">I'm not seeing=
 a case where an IGP adj-SID would have &quot;CONTINUE&quot; as a forwardin=
g behavior.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">And the SR arc=
hitecture requires a NEXT operation:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp; When a node binds an Adj-SID to a local data-link L,=
 the node MUST<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp; install the following FIB entry:<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; Incoming Active Segment: V<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; Ingress Operation: NEXT<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; Egress Interface: L&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">https://tools.=
ietf.org/html/draft-ietf-spring-segment-routing-15#section-3.4<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">A solution wou=
ld be to simply remove &quot;such as an IGP adj-SID&quot;<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">---<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A73 IGP Segme=
nt examples<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">This section, =
also useful, is quite long and not normative for this STD track doc. An opt=
ion may be to move it to appendix.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Up to you.<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">---<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A73.1<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;R2 is th=
e next-hop along the shortest path towards R8. By applying<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; t=
he steps in Section 2.8 the local label downloaded to R1's FIB<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; c=
orresponding to the global SID index 8 is 1008 because the SRGB of<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; R=
2 is [1000,5000] as shown in Figure 2.&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;may be<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">OLD:&nbsp; loc=
al label downloaded to R1's FIB<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">NEW:&nbsp; loc=
al outgoing label downloaded to R1's FIB<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;(because=
 I would assume that by default, label downloaded in the FIB is probably th=
e incomig label one)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;--<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">OLD: owned by =
the R8<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">NEW1: OLD: own=
ed by R8<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">NEW2: OLD: own=
ed by the node R8<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">--<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;The pack=
et arrives at router R2. Because the top label 1008<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; c=
orresponds to the IGP SID &quot;8&quot;, which is the prefix-SID attached t=
o<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; t=
he prefix 192.0.2.8/32 owned by the R8, then the instruction<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; a=
ssociated with the SID is &quot;forward the packet using all ECMP/UCMP<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; i=
nterfaces and all ECMP/UCMP next-hop(s) along the shortest path<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; t=
owards R8&quot;. &quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">IGP prefix-SID=
 are typically forwarded along the ECMP shortest path. I'm not sure where &=
quot;UCMP&quot; is coming from. Also &quot;along the shortest path&quot; se=
ems
 to be incompatible with UCMP.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">--<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;Because =
R3<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; i=
s the penultimate hop, R3 applies NEXT operation then sends the<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; p=
acket to R8.&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; &=
quot;penultimate hop&quot; is a required but not sufficient reason. You are=
 assuming that R8 asked for PHP, but I'm not seeing this assumption stated =
in
 the text.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">---<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot;The NEXT=
 operation results in popping the outer label<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; a=
nd sending the packet as a pure IPv4 packet to R8. The<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; I=
n conclusion, &quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">OLD: The<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">NEW:
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">---<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">=A73.2 &amp; =
=A73.3 &amp; =A73.4 &amp; =A73.5<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&quot; Using t=
he<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; c=
alculation techniques specified in Section 2.10 and 2.11 the<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; r=
esulting label stack starting from the topmost label is &lt;1002, 9001,<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; 1=
008&gt;.&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Actually secti=
on 2.10 only defines the calculation technique for the top label:<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; &=
quot;This document covers the calculation of outgoing label for the top<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; l=
abel only. The case where outgoing label is not the top label and is<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; p=
art of a stack of labels that instantiates a routing policy or a<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; t=
raffic engineering tunnel is covered in other documents such as<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; [=
I.D.filsfils-spring-segment-routing-policy].&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp; h=
ttps://tools.ietf.org/html/draft-ietf-spring-segment-routing-mpls-13#sectio=
n-2.10<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">&nbsp;&nbsp;&n=
bsp;Hence this document does not define the behavior for this example 2. Yo=
u would need to either extend this doc to cover the push of a stack of labe=
l/SID
 or remove these examples 2, 3, 4, 5<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">----<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">[RFC8174] to b=
e added to normative references.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</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 #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;;mso-fareast-language:FR">From:</span><=
/b><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:FR"> bruno.decraene@orange.com [mailto:b=
runo.decraene@orange.com]
<br>
<b>Sent:</b> Thursday, May 24, 2018 7:14 PM<br>
<b>To:</b> SPRING WG List<br>
<b>Cc:</b> draft-ietf-spring-segment-routing-mpls@ietf.org<br>
<b>Subject:</b> WG Last Call for draft-ietf-spring-segment-routing-mpls-13<=
o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<pre><span lang=3D"EN-US">Hello Working Group,<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">&nbsp;&nbsp;&nbsp; <o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">This email starts a Working Group Last Call on dr=
aft-ietf-spring-segment-routing-mpls-13 [1] which is considered mature and =
ready for a final working group review.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">&nbsp;&nbsp;&nbsp; <o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Please read this document if you haven't read the=
 most recent version yet, and send your comments to the list, no later than=
 *June 08*.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></pre>
<pre><span lang=3D"EN-US">As a reminder, this document had already passed a=
 WGLC more than a year ago on version -06 [2], had been sent to the AD but =
then returned to the WG.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Since then, the document has significantly change=
d, so please read it again. In particular, it now includes the resolution i=
n case of incoming label collision. Hence it killed draft-ietf-spring-confl=
ict-resolution.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></pre>
<pre><span lang=3D"EN-US">Both co-chairs co-author this document, hence:<o:=
p></o:p></span></pre>
<pre><span lang=3D"EN-US">- Shraddha has agreed to be the document shepherd=
. Thank you Shraddha.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">- Martin, our AD, has agreed to evaluate the WG c=
onsensus.<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">&nbsp;&nbsp;&nbsp; <o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Thank you,<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Bruno, Rob<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></pre>
<pre><span lang=3D"EN-US">[1] <a href=3D"https://tools.ietf.org/html/draft-=
ietf-spring-segment-routing-mpls-13">https://tools.ietf.org/html/draft-ietf=
-spring-segment-routing-mpls-13</a><o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">[2] <a href=3D"https://mailarchive.ietf.org/arch/=
msg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y">https://mailarchive.ietf.org/arch/m=
sg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y</a><o:p></o:p></span></pre>
<pre><span lang=3D"EN-US" style=3D"font-family:&quot;Arial&quot;,&quot;sans=
-serif&quot;"><o:p>&nbsp;</o:p></span></pre>
<pre>______________________________________________________________________=
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<pre>Orange decline toute responsabilite si ce message a ete altere, deform=
e ou falsifie. Merci.<o:p></o:p></pre>
<pre><o:p>&nbsp;</o:p></pre>
<pre>This message and its attachments may contain confidential or privilege=
d information that may be protected by law;<o:p></o:p></pre>
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</div>
<PRE>______________________________________________________________________=
___________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations confiden=
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pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu=
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From: "Kamran Raza (skraza)" <skraza@cisco.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
Thread-Topic: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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From: "Kamran Raza (skraza)" <skraza@cisco.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
CC: Bruno Decraene <bruno.decraene@orange.com>, "draft-filsfils-spring-segment-routing-policy@ietf.org" <draft-filsfils-spring-segment-routing-policy@ietf.org>
Thread-Topic: [spring] IPR Poll for draft-filsfils-spring-segment-routing-policy
Thread-Index: AQHT7Sl+iWL1tsqY/E+Yy9tBnumjgaQy25+AgAjUsACAA9d/AA==
Date: Thu, 24 May 2018 21:46:34 +0000
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References: <CAHd-QWsAYVWcAE9TRbkzSfY_60wC+O0YZZQB7ZnRHr=mPkuBpw@mail.gmail.com> <11090_1526487312_5AFC5910_11090_188_1_53C29892C857584299CBF5D05346208A47A4899A@OPEXCLILM21.corporate.adroot.infra.ftgroup> <73DC995E-31E1-4FD4-8BDA-24EE109508D2@cisco.com>
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Subject: Re: [spring] IPR Poll for draft-filsfils-spring-segment-routing-policy
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From: "Adrian Farrel" <adrian@olddog.co.uk>
To: <bruno.decraene@orange.com>, "'SPRING WG List'" <spring@ietf.org>
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Subject: Re: [spring] WG Last Call for draft-ietf-spring-segment-routing-mpls-13
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Hi,
 
I think it is well past time that we completed this foundation work
and got an RFC published. So I support passing this draft to the AD
again.
 
However, we do need to clean it up first. Hopefully this won't be a
lot of effort for the editors as nearly all I found were editorial 
nits.
 
As a side comment, it isn't a success that section 2.5 is so large. 
Full one quarter of the document is dedicated to the edge case of
collision avoidance. That said, I don't have a better solution.
 
Thanks for the work.
 
Adrian
 
====
 
idnits isn't as clean as it could be. In particular:
- 2.5.2.1 uses IP address 1.1.1.1 and should pick one from RFC 6890.
- Missing normative reference for RFC 8174
- [I-D.ietf-idr-segment-routing-te-policy] is not used
- [I-D.ietf-ospf-ospfv3-segment-routing-extensions] and
  [I-D.ietf-ospf-segment-routing-extensions] have spurious spaces in
  the filenames
 
---
 
You'll need to move the "Requirements Language" to be Section 1.1.
 
---
 
Section 2
s/link State IGPs/link state IGPs/
s/Segment ID (SIDs)/Segment IDs (SIDs)/
 
---
 
You use SRGB in 2.2 before you expand it in 2.3
 
---
 
2.2
   o  The label value MUST be unique within the router on which the MCC
      is running. i.e. the label MUST only be used to represent the SID.
 
I don't think you mean this. You have written that the label value has 
be unique which means that only one label value can be assigned to a
SID.
 
I think what you mean is that 
 
   o  The label value MUST NOT be used for any other purpose on the 
      router on which the MCC is running. I.e. the label MUST NOT be 
      used to represent more than one SID or for any other forwarding
      purpose on the router.
 
---
 
2.2
 
Unusual to have a normative reference to an IANA URL as you have for
[reserved-MPLS]. Besides, the URL you give is 404.
 
You would do better to reference RFC 7274.
 
You might also fix the language and terminology, thus...
 
OLD
   o  The label value MUST NOT be identical to or within the range of
      any reserved label value or range [reserved-MPLS], respectively.
NEW
   o  The label value MUST NOT come from the range of special purpose
      labels [RFC7274].
 
---
 
2.3 ditto
 
OLD
   o  Every range in the list of ranges specifying the SRGB MUST NOT
      cover or overlap with a reserved label value or range [reserved-
      MPLS], respectively.
NEW
   o  Every range in the list of ranges specifying the SRGB MUST NOT
      cover or overlap with the range of special purpose labels 
      [RFC7274].
 
---
 
2.3
 
   o  If the SRGB of a node does not conform to the structure specified
      in this section or to the previous two rules, then this SRGB is
      completely ignored and the node is treated as if it does not have
      an SRGB.
 
Can we fix this passive voice? Presume the intention is that the 
advertisement of this SRGB is ignored by any routing protocol speakers
that receive it.
 
Two points of clarification I think we should add:
 
1. The *whole* SRGB is ignored, not simply the range of labels in a set
   of ranges that is at fault
 
2. The term "ignore" in this case means that no SR action is taken, but
   the SRGB advertisement continues to be propagated within the routing
   protocol.
 
---
 
2.3 (bottom of page 5)
 
s/reserved label/special purpose label/
 
---
 
2.3
s/contiguous range of label/contiguous range of labels/
 
---
 
2.5
s/(e.g.,over/(e.g., over/
s/map to the same incoming/maps to the same incoming/
s/FECk} maps to the same/FECk} map to the same/
s/non-zero algo/non-zero algorithm/
 
---
 
2.5.1
The plural of FEC is FECs not FEC's
 
---
 
2.5.1
 
   2. if more than one competing FEC remains after step 1, sort them and
      select the smallest numerical FEC value
 
Is sorting required? Can we just have...
 
   2. if more than one competing FEC remains after step 1, select the 
      smallest numerical FEC value
 
---
 
2.5.1
An implementation may choose to implement additional
s/may/MAY/
 
---
 
2.5.2
s/THEN/then/
 
---
 
2.7
s/plan./plane./
 
---
 
Terminology for adjacency SIDs needs to be harmonised.
 
draft-ietf-spring-segment-routing has "IGP-Adjacency Segment" and 
"Adj-SID"
 
This document has:
adjacency SID (2.5.1)
Adj-SID (2.7.3)
adj-SID (2.7.3)
IGP-adjacency-SID (2.8)
IGP-Adj-SID (2.11.1)
IGP adj-SID (2.11.2)
 
---
 
Some of the section names are overly long and can be cut down without
risking much. This helps with layout and readability. Just a suggestion,
but...
 
OLD
2.1. Supporting Multiple Forwarding Behaviors for the Same Prefix
2.8. MPLS Label downloaded to FIB corresponding to Global and Local SIDs
2.10.1. Forwarding Behavior for PUSH and CONTINUE Operation for Global SIDs
2.10.2. Forwarding Behavior for NEXT Operation for Global SIDs
2.11.1. Forwarding Behavior Corresponding to PUSH Operation on Local SIDs
2.11.2. Forwarding Behavior Corresponding to CONTINUE Operation for Local SIDs
NEW
2.1. Multiple Forwarding Behaviors for the Same Prefix
2.8. MPLS Label Downloaded to FIB for Global and Local SIDs
2.10.1. Forwarding for PUSH and CONTINUE of Global SIDs
2.10.2. Forwarding for NEXT Operation for Global SIDs
2.11.1. Forwarding for PUSH Operation on Local SIDs
2.11.2. Forwarding for CONTINUE Operation for Local SIDs
 
---
 
For some reason the definite article is missing before a lot of
instances of "FIB". For example, in 2.8...
 
   The label corresponding to the global SID "Si" represented by the
   global index "I" downloaded to FIB is used to match packets whose
 
---
 
2.10
OLD
   This section specifies forwarding behavior, including the outgoing
   label(s) calculations corresponding to a global SID when applying
   PUSH, CONTINUE, and NEXT operations in the MPLS forwarding plane.
 
   This document covers the calculation of outgoing label for the top
   label only. The case where outgoing label is not the top label and is
   part of a stack of labels that instantiates a routing policy or a
   traffic engineering tunnel is covered in other documents such as
   [I.D.filsfils-spring-segment-routing-policy].
NEW
   This section specifies forwarding behavior, including the calculation
   of outgoing labels, that corresponds to a global SID when applying
   PUSH, CONTINUE, and NEXT operations in the MPLS forwarding plane.
 
   This document covers the calculation of the outgoing label for the 
   top label only. The case where the outgoing label is not the top 
   label and is part of a stack of labels that instantiates a routing
   policy or a traffic engineering tunnel is covered in other documents
   such as [I.D.filsfils-spring-segment-routing-policy].
 
---
 
2.10.1
s/{RFC3031]/[RFC3031]/
 
---
 
2.10.2 has
 
   o  Apply the instruction associated with the incoming label prior to
      popping
 
This is a little ambiguous. Might be read that the instruction should be
applied prior to popping. The text that follows des clarify, but perhaps
rewrite as...
 
   o  Apply the instruction associated with the incoming label that has
      been popped
 
---
 
In order that ECMP descriptions work in the examples, Section 3 just
needs a quick comment like.
 
   All links in this example have the same IGP metric.
 
---
 
While it is largely OK to defer the discussion of manageability in 
Section 5 to draft-ietf-spring-segment-routing, it would make sense
to make explicit reference to RFC 8287 because that is the key document
that means no further OAM discussion is needed in this document.
 
Probably just copy in the following paragraph
 
   SR OAM use cases for the MPLS data plane are defined in
   [I-D.ietf-spring-oam-usecase].  SR OAM procedures for the MPLS data
   plane are defined in [RFC8287].
 
---
 
8.
 
Possibly Himanshu would prefer to be named as "Himanshu Shah".
 
From: spring [mailto:spring-bounces@ietf.org] On Behalf Of
bruno.decraene@orange.com
Sent: 24 May 2018 18:14
To: SPRING WG List
Cc: draft-ietf-spring-segment-routing-mpls@ietf.org
Subject: [spring] WG Last Call for draft-ietf-spring-segment-routing-mpls-13
 
Hello Working Group,
    
This email starts a Working Group Last Call on
draft-ietf-spring-segment-routing-mpls-13 [1] which is considered mature and
ready for a final working group review.
    
Please read this document if you haven't read the most recent version yet, and
send your comments to the list, no later than *June 08*.
 
As a reminder, this document had already passed a WGLC more than a year ago on
version -06 [2], had been sent to the AD but then returned to the WG.
Since then, the document has significantly changed, so please read it again. In
particular, it now includes the resolution in case of incoming label collision.
Hence it killed draft-ietf-spring-conflict-resolution.
 
Both co-chairs co-author this document, hence:
- Shraddha has agreed to be the document shepherd.. Thank you Shraddha.
- Martin, our AD, has agreed to evaluate the WG consensus.
    
Thank you,
Bruno, Rob
 
[1] https://tools.ietf.org/html/draft-ietf-spring-segment-routing-mpls-13
[2] https://mailarchive.ietf.org/arch/msg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y
 
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<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
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<o:shapelayout v:ext=3D"edit">
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-GB link=3Dblue =
vlink=3Dpurple style=3D'tab-interval:36.0pt'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>Hi,<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>I think it is well =
past time that we completed this foundation work<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>and got an RFC =
published. So I support passing this draft to the =
AD<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>again.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>However, we do need to =
clean it up first. Hopefully this won't be a<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>lot of effort for the =
editors as nearly all I found were editorial <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>nits.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>As a side comment, it =
isn't a success that section 2.5 is so large. <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Full one quarter of =
the document is dedicated to the edge case of<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>collision avoidance. =
That said, I don't have a better solution.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Thanks for the =
work.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>Adrian<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>=3D=3D=3D=3D<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>idnits isn't as clean =
as it could be. In particular:<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>- 2.5.2.1 uses IP =
address 1.1.1.1 and should pick one from RFC =
6890.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>- Missing normative =
reference for RFC 8174<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>- =
[I-D.ietf-idr-segment-routing-te-policy] is not =
used<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>- =
[I-D.ietf-ospf-ospfv3-segment-routing-extensions] =
and<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp; =
</span>[I-D.ietf-ospf-segment-routing-extensions] have spurious spaces =
in<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp; </span>the =
filenames<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>You'll need to move =
the &quot;Requirements Language&quot; to be Section =
1.1.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Section =
2<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>s/link State IGPs/link =
state IGPs/<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>s/Segment ID =
(SIDs)/Segment IDs (SIDs)/<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>You use SRGB in 2.2 =
before you expand it in 2.3<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>2.2<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'> =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;</span>o<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>The label value MUST be unique =
within the router on which the MCC<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>is =
running. i.e. the label MUST only be used to represent the =
SID.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>I don't think you mean =
this. You have written that the label value has <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>be unique which means =
that only one label value can be assigned to a<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>SID.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>I think what you mean =
is that <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>o<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>The label value MUST NOT be =
used for any other purpose on the <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>rou=
ter on which the MCC is running. I.e. the label MUST NOT be =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>use=
d to represent more than one SID or for any other =
forwarding<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>purpose =
on the router.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>2.2<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Unusual to have a =
normative reference to an IANA URL as you have =
for<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>[reserved-MPLS]. =
Besides, the URL you give is 404.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>You would do better to =
reference RFC 7274.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>You might also fix the =
language and terminology, thus...<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>OLD<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>o<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>The label value MUST NOT be =
identical to or within the range of<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>any =
reserved label value or range [reserved-MPLS], =
respectively.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>NEW<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>o<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>The label value MUST NOT come =
from the range of special purpose<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>labels =
[RFC7274].<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.3 =
ditto<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>OLD<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>o<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>Every range in the list of =
ranges specifying the SRGB MUST NOT<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>cover =
or overlap with a reserved label value or range =
[reserved-<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>MPLS], =
respectively.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>NEW<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>o<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>Every range in the list of =
ranges specifying the SRGB MUST NOT<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>cover =
or overlap with the range of special purpose labels =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>[RF=
C7274].<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>2.3<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>o<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>If the SRGB of a node does not =
conform to the structure specified<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>in this =
section or to the previous two rules, then this SRGB =
is<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>completely ignored and the node is treated as if it does not =
have<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>an =
SRGB.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Can we fix this =
passive voice? Presume the intention is that the =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>advertisement of this =
SRGB is ignored by any routing protocol speakers<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>that receive =
it.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Two points of =
clarification I think we should add:<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>1. The *whole* SRGB is =
ignored, not simply the range of labels in a set<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>of ranges that is at =
fault<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2. The term =
&quot;ignore&quot; in this case means that no SR action is taken, =
but<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>the SRGB advertisement =
continues to be propagated within the routing<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>protocol.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.3 (bottom of page =
5)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>s/reserved =
label/special purpose label/<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>2.3<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>s/contiguous range of =
label/contiguous range of labels/<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>2.5<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>s/(e.g.,over/(e.g., =
over/<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>s/map to the same =
incoming/maps to the same incoming/<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>s/FECk} maps to the =
same/FECk} map to the same/<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>s/non-zero =
algo/non-zero algorithm/<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>2.5.1<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>The plural of FEC is =
FECs not FEC's<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>2.5.1<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>2. if more than one =
competing FEC remains after step 1, sort them =
and<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>select =
the smallest numerical FEC value<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Is sorting required? =
Can we just have...<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>2. if more than one =
competing FEC remains after step 1, select the <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>sma=
llest numerical FEC value<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>2.5.1<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>An implementation may =
choose to implement additional<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>s/may/MAY/<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>2.5.2<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>s/THEN/then/<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>2.7<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>s/plan./plane./<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Terminology for =
adjacency SIDs needs to be harmonised.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>draft-ietf-spring-segment-routing has =
&quot;IGP-Adjacency Segment&quot; and <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>&quot;Adj-SID&quot;<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>This document =
has:<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>adjacency SID =
(2.5.1)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Adj-SID =
(2.7.3)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>adj-SID =
(2.7.3)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>IGP-adjacency-SID =
(2.8)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>IGP-Adj-SID =
(2.11.1)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>IGP adj-SID =
(2.11.2)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Some of the section =
names are overly long and can be cut down =
without<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>risking much. This =
helps with layout and readability. Just a =
suggestion,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>but...<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>OLD<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.1. Supporting =
Multiple Forwarding Behaviors for the Same =
Prefix<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.8. MPLS Label =
downloaded to FIB corresponding to Global and Local =
SIDs<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.10.1. Forwarding =
Behavior for PUSH and CONTINUE Operation for Global =
SIDs<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.10.2. Forwarding =
Behavior for NEXT Operation for Global SIDs<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.11.1. Forwarding =
Behavior Corresponding to PUSH Operation on Local =
SIDs<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.11.2. Forwarding =
Behavior Corresponding to CONTINUE Operation for Local =
SIDs<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>NEW<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.1. Multiple =
Forwarding Behaviors for the Same Prefix<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.8. MPLS Label =
Downloaded to FIB for Global and Local SIDs<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.10.1. Forwarding for =
PUSH and CONTINUE of Global SIDs<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.10.2. Forwarding for =
NEXT Operation for Global SIDs<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.11.1. Forwarding for =
PUSH Operation on Local SIDs<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.11.2. Forwarding for =
CONTINUE Operation for Local SIDs<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>For some reason the =
definite article is missing before a lot of<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>instances of =
&quot;FIB&quot;. For example, in 2.8...<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>The label corresponding =
to the global SID &quot;Si&quot; represented by =
the<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>global index =
&quot;I&quot; downloaded to FIB is used to match packets =
whose<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>2.10<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>OLD<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>This section specifies =
forwarding behavior, including the outgoing<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>label(s) calculations =
corresponding to a global SID when applying<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>PUSH, CONTINUE, and NEXT =
operations in the MPLS forwarding plane.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>This document covers the =
calculation of outgoing label for the top<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>label only. The case =
where outgoing label is not the top label and is<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>part of a stack of labels =
that instantiates a routing policy or a<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>traffic engineering =
tunnel is covered in other documents such as<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>[I.D.filsfils-spring-segment-routing-policy].<o:p></o:p></span></p=
><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>NEW<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>This section specifies =
forwarding behavior, including the calculation<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>of outgoing labels, that =
corresponds to a global SID when applying<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>PUSH, CONTINUE, and NEXT =
operations in the MPLS forwarding plane.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>This document covers the =
calculation of the outgoing label for the <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;</span>top label only. The =
case where the outgoing label is not the top <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;</span>label and is part of =
a stack of labels that instantiates a routing<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>policy or a traffic =
engineering tunnel is covered in other documents<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>such as =
[I.D.filsfils-spring-segment-routing-policy].<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>2.10.1<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>s/{RFC3031]/[RFC3031]/<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>2.10.2 =
has<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>o<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>Apply the instruction =
associated with the incoming label prior to<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>popping<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>This is a little =
ambiguous. Might be read that the instruction should =
be<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>applied prior to =
popping. The text that follows des clarify, but =
perhaps<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>rewrite =
as...<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>o<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>Apply the instruction =
associated with the incoming label that has<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>been =
popped<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>In order that ECMP =
descriptions work in the examples, Section 3 =
just<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>needs a quick comment =
like.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>All links in this example =
have the same IGP metric.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>While it is largely OK =
to defer the discussion of manageability in <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Section 5 to =
draft-ietf-spring-segment-routing, it would make =
sense<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>to make explicit =
reference to RFC 8287 because that is the key =
document<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>that means no further =
OAM discussion is needed in this document.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Probably just copy in =
the following paragraph<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>SR OAM use cases for the =
MPLS data plane are defined in<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>[I-D.ietf-spring-oam-usecase].<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>SR OAM procedures for the MPLS =
data<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>plane are defined in =
[RFC8287].<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'>8.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New Roman";color:#1F497D'>Possibly Himanshu =
would prefer to be named as &quot;Himanshu =
Shah&quot;.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-=
bidi-font-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</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 #B5C4DF =
1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-f=
ont-family:"Times New =
Roman";mso-ansi-language:EN-US;mso-fareast-language:EN-GB'>From:</span></=
b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-f=
ont-family:"Times New =
Roman";mso-ansi-language:EN-US;mso-fareast-language:EN-GB'> spring =
[mailto:spring-bounces@ietf.org] <b>On Behalf Of =
</b>bruno.decraene@orange.com<br><b>Sent:</b> 24 May 2018 =
18:14<br><b>To:</b> SPRING WG List<br><b>Cc:</b> =
draft-ietf-spring-segment-routing-mpls@ietf.org<br><b>Subject:</b> =
[spring] WG Last Call for =
draft-ietf-spring-segment-routing-mpls-13<o:p></o:p></span></p></div></di=
v><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><pre><span lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'>Hello Working =
Group,<o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'>&nbsp;&nbsp;&nbsp; =
<o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'>This email starts a Working Group Last =
Call on draft-ietf-spring-segment-routing-mpls-13 [1] which is =
considered mature and ready for a final working group =
review.<o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'>&nbsp;&nbsp;&nbsp; =
<o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'>Please read this document if you =
haven't read the most recent version yet, and send your comments to the =
list, no later than *June 08*.<o:p></o:p></span></pre><pre><span =
lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span></pre><pre><spa=
n lang=3DEN-US style=3D'mso-ansi-language:EN-US'>As a reminder, this =
document had already passed a WGLC more than a year ago on version -06 =
[2], had been sent to the AD but then returned to the =
WG.<o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'>Since then, the document has =
significantly changed, so please read it again. In particular, it now =
includes the resolution in case of incoming label collision. Hence it =
killed =
draft-ietf-spring-conflict-resolution.<o:p></o:p></span></pre><pre><span =
lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span></pre><pre><spa=
n lang=3DEN-US style=3D'mso-ansi-language:EN-US'>Both co-chairs =
co-author this document, hence:<o:p></o:p></span></pre><pre><span =
lang=3DEN-US style=3D'mso-ansi-language:EN-US'>- Shraddha has agreed to =
be the document shepherd.. Thank you =
Shraddha.<o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'>- Martin, our AD, has agreed to =
evaluate the WG consensus.<o:p></o:p></span></pre><pre><span =
lang=3DEN-US style=3D'mso-ansi-language:EN-US'>&nbsp;&nbsp;&nbsp; =
<o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'>Thank =
you,<o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'>Bruno, =
Rob<o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span></pre><pre><spa=
n lang=3DEN-US style=3D'mso-ansi-language:EN-US'>[1] <a =
href=3D"https://tools.ietf.org/html/draft-ietf-spring-segment-routing-mpl=
s-13">https://tools.ietf.org/html/draft-ietf-spring-segment-routing-mpls-=
13</a><o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'mso-ansi-language:EN-US'>[2] <a =
href=3D"https://mailarchive.ietf.org/arch/msg/spring/STiYsQJWuVXA1C9hK4Bi=
UnyMu7Y">https://mailarchive.ietf.org/arch/msg/spring/STiYsQJWuVXA1C9hK4B=
iUnyMu7Y</a><o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'font-family:"Arial","sans-serif";mso-ansi-language:EN-US'><o:p>&=
nbsp;</o:p></span></pre><pre><span lang=3DFR =
style=3D'mso-ansi-language:FR'>__________________________________________=
_________________________________________________________________________=
______<o:p></o:p></span></pre><pre><span lang=3DFR =
style=3D'mso-ansi-language:FR'><o:p>&nbsp;</o:p></span></pre><pre><span =
lang=3DFR style=3D'mso-ansi-language:FR'>Ce message et ses pieces =
jointes peuvent contenir des informations confidentielles ou =
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veuillez le signaler<o:p></o:p></span></pre><pre><span lang=3DFR =
style=3D'mso-ansi-language:FR'>a l'expediteur et le detruire ainsi que =
les pieces jointes. Les messages electroniques etant susceptibles =
d'alteration,<o:p></o:p></span></pre><pre><span lang=3DFR =
style=3D'mso-ansi-language:FR'>Orange decline toute responsabilite si ce =
message a ete altere, deforme ou falsifie. =
Merci.<o:p></o:p></span></pre><pre><span lang=3DFR =
style=3D'mso-ansi-language:FR'><o:p>&nbsp;</o:p></span></pre><pre><span =
lang=3DFR style=3D'mso-ansi-language:FR'>This message and its =
attachments may contain confidential or privileged information that may =
be protected by law;<o:p></o:p></span></pre><pre><span lang=3DFR =
style=3D'mso-ansi-language:FR'>they should not be distributed, used or =
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lang=3DFR style=3D'mso-ansi-language:FR'>If you have received this email =
in error, please notify the sender and delete this message and its =
attachments.<o:p></o:p></span></pre><pre><span lang=3DFR =
style=3D'mso-ansi-language:FR'>As emails may be altered, Orange is not =
liable for messages that have been modified, changed or =
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style=3D'mso-ansi-language:FR'>Thank =
you.<o:p></o:p></span></pre></div></div></body></html>
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From: "Zafar Ali (zali)" <zali@cisco.com>
To: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, SPRING WG List <spring@ietf.org>
CC: "draft-ietf-spring-segment-routing-mpls@ietf.org" <draft-ietf-spring-segment-routing-mpls@ietf.org>
Thread-Topic: [spring] WG Last Call for draft-ietf-spring-segment-routing-mpls-13
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--_000_E6DDD89ED6D6425EA9FBBE1C99E3B5D1ciscocom_--


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From: Gaurav Dawra <gdawra.ietf@gmail.com>
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In-Reply-To: <EC4C550B-05D7-4E6D-A1FD-ED48ECDC3059@gmail.com>
Date: Fri, 25 May 2018 09:08:43 -0700
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References: <a77a198c-2a5a-d754-8725-6d6685338f6c@gmail.com> <40ED2C86-3403-4D89-8CA8-FBB9651BF2AB@gmail.com> <6dd41180-83bd-c02e-1783-df873e749941@gmail.com> <ACD3CA27-2B92-4BD9-9D2B-A22FE20A65E7@gmail.com> <EC4C550B-05D7-4E6D-A1FD-ED48ECDC3059@gmail.com>
To: Martin Stiemerling <mls.ietf@gmail.com>
Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/jjhNXBY2-vWgpPF44-YaT1Szzv4>
Subject: Re: [spring] TSV-ART review of draft-ietf-spring-segment-routing-msdc-08
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Hi Martin,

Thanks for review. I will post the new version. Hopefully, it will address a=
ll your comments and we can close this review.

Any updates on below response?

Cheers,

Gaurav

Sent from my iPhone

> On May 23, 2018, at 4:17 AM, Gaurav Dawra <gdawra.ietf@gmail.com> wrote:
>=20
> Hi Martin,
>=20
> Thanks for the review. Any further comments here ? I will post the new ver=
sion soon.
>=20
> Cheers,
>=20
> Gaurav
>=20
> Sent from my iPhone
>=20
>> On May 16, 2018, at 7:44 PM, Gaurav Dawra <gdawra.ietf@gmail.com> wrote:
>>=20
>> Hi Martin,
>>=20
>> Apologies from my end we had few internal authors conversations on the po=
ints you have raised.
>>=20
>> Please find below my response. I will be happy to discuss further, if nee=
ded.
>>=20
>> <Gaurav> inline...
>>=20
>>> On Apr 9, 2018, at 7:58 AM, Martin Stiemerling <mls.ietf@gmail.com> wrot=
e:
>>>=20
>>> Hi Gaurav,
>>>=20
>>> This got lost on my end, sorry for this. The filter just moved these mes=
sages out of my sight... :-/
>>>=20
>>>> Am 15.02.18 um 05:47 schrieb Gaurav Dawra:
>>>> Hey Martin,
>>>> Sorry for late reply. Please see some comments inline[Gaurav]
>>>>> On Jan 9, 2018, at 2:25 PM, Martin Stiemerling <mls.ietf@gmail.com <ma=
ilto:mls.ietf@gmail.com>> wrote:
>>>>>=20
>>>>> Hi all,
>>>>>=20
>>>>> I've reviewed this document as part of the transport area review team'=
s ongoing effort to review key IETF documents. These comments were written p=
rimarily for the transport area directors, but are copied to the document's a=
uthors for their information and to allow them to address any issues raised.=
 When done at the time of IETF Last Call, the authors should consider this r=
eview together with any other last-call comments they receive. Please always=
 CC tsv-art@=E2=80=A6 if you reply to or forward this review.
>>>>>=20
>>>>> Summary:
>>>>> This draft has serious issues in Section 7.1, 7.2 and in one part of S=
ection3, described in the review, and needs to be rethought. The other secti=
ons are good AFAIK.
>>>>>=20
>>>>>=20
>>>>> Technicals:
>>>>> The overall draft looks ok, but the three points below look strange an=
d need a fix before publication IMHO:
>>>>>=20
>>>>> Both Sections, 7.1. and 7.2., are describing ideas, but not well prove=
n funcationality and not even safe to use functionality. Both are some sort d=
iscussing that different paths in the network could be used by the end host t=
raffic. This sounds pretty much like the Path Aware Networking Proposed Rese=
arch Group (https://irtf.org/panrg) and hints to the fact that there is no c=
ommonly understand and accepted engineering solution in this space.
>>>>>=20
>>>>> Section 7.1:
>>>>> [KANDULA04] is a really old reference that hasn't been followed up in r=
ecent times and even worse there is no evidence that this is going to work g=
ood enough or stable enough under real Internet traffic. Additionally, it is=
 more than unclear how any modern TCP implementation will react to this
>>>> [Gaurav] Will get back on this.
>>>=20
>>> I will reply to the other email dicussing this.
>> <Gaurav> I have replied to other thread.
>>>=20
>>>>>=20
>>>>> Section 7.2:
>>>>> This section describes an idea without detailing too much about any fu=
rther aspects. Further it changes the commonly accepted notion of what an en=
d host can do with the network. At best this would require a good definition=
 of what an end host in your setting is, e.g., a highly modified piece of (a=
t least) software that usually not found in OS availble on the market (yet?)=

>>>>> Further communicating instantaneous path characteristics to a central p=
oint is potentially a bad idea, as the data is already outdated when reporte=
d by any node.
>>>> [Gaurav] I believe Authors are trying to highlight that Host which is d=
efined in (https://tools.ietf.org/html/draft-ietf-spring-segment-routing-15)=
 can influence the traffic based on the Calculations locally or jointly with=
 the controller. Implementations can decide how much Centralized -vs- locali=
zed control is allowed at Host based on performance data collection.
>>>=20
>>> Performance data collection (monitoring?) isn't crucial when it comes to=
 timely (actually real-time) reaction. However, this section isn't just abou=
t performance data collection as it is about "Performance-aware routing" thi=
s seems to try to interact in real-time with the network behavior of TCP. Th=
is isn't even close to acceptable.
>>>=20
>>> I would be ok to say that it is useful to collect performance data for o=
ffline analysis and improvement of the data network. However, this is at com=
pletely different magnitues of time scales.
>>>=20
>>> I would recommend to remove the TCP part from this section entirely.
>> <Gaurav>Ack, will update in next rev:
>>=20
>> Section will read like this:
>>=20
>> ;
>> =20
>>    Knowing the path associated with flows/packets, the end host may
>>    deduce certain characteristics of the path on its own, and
>>    additionally use the information supplied with path information
>>    pushed from the controller or received via pull request.  The host
>>    may further share its path observations with the centralized agent,
>>    so that the latter may keep up-to-date network health map to assist
>>    other hosts with this information.
>> =20
>>    For example, an application A.1 at HostA may pin a flow destined
>>    to HostZ via Spine node Node5 using label stack {16005, 16011}. The
>>    application A.1 may collect information on packet loss, deduced from
>>    Other offline mechanisms.  [There are some pingMesh mechanisms which=20=

>>    Can be used here]
>> =20
>>     Through these mechanisms information to a centralized agent, e.g.
>>    after a flow completes, or periodically for longer lived flows.
>>    Next, using both local and/or global performance data, application
>>    A.1 as well as other applications sharing the same resources in the
>>    DC fabric may pick up the best path for the new flow, or update an
>>    existing path (e.g.: when informed of congestion on an existing
>>    path).
>> =20
>> ;
>>=20
>>>=20
>>>=20
>>>>>=20
>>>>> Section 3, 3rd bullet point:
>>>>> It is the foundation of TCP that the network is regarded as a black bo=
x and that you infer from the transmission of packets what the current state=
 of the network path is. Inferring network path metrics (you mention SRTT, M=
SS, CWND ) is a bad idea, as this would required that all paths exhibit this=
 and if not what is going to happen?
>>>>> It could be an interesting research field to change many points in TCP=
's behavior, but this once again points to the fact that this not the IETF w=
orks but IRTF or elsewhere.
>>>> [Gaurav] Martin, Authors are trying to suggest that TCP is rightly trea=
ting Network as Black Box. Authors are implying per path performance metrics=
 as not cached. Is there some change in text you are suggesting?
>>>=20
>>>=20
>>> I would recommend to remove the 3rd bullet point completey. TCP isn't th=
e place to remember "good" or "bad" paths. This is something the network cou=
ld decide, e.g., rerouting TCP flows within the network or changing the forw=
arding path in the network for particular flows (if it is not routed).
>>=20
>> <Gaurav> Ack, after discussion, we will remove the Section 3 - 3rd bullet=
 point. Will update in next rev - coming shortly.
>>=20
>>>=20
>>> Kind regards,
>>>=20
>>>  Martin
>>>=20
>>=20

--Apple-Mail-D095E87B-8DE0-4BD2-A6B1-D0C9AB57DCB1
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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">Hi Martin,<div><br></div><div>Thanks for re=
view. I will post the new version. Hopefully, it will address all your comme=
nts and we can close this review.</div><div><br></div><div>Any updates on be=
low response?</div><div><br></div><div>Cheers,</div><div><br></div><div>Gaur=
av<br><div><br><div id=3D"AppleMailSignature">Sent from my iPhone</div><div>=
<br>On May 23, 2018, at 4:17 AM, Gaurav Dawra &lt;<a href=3D"mailto:gdawra.i=
etf@gmail.com">gdawra.ietf@gmail.com</a>&gt; wrote:<br><br></div><blockquote=
 type=3D"cite"><div><meta http-equiv=3D"content-type" content=3D"text/html; c=
harset=3Dutf-8">Hi Martin,<div><br></div><div>Thanks for the review. Any fur=
ther comments here ? I will post the new version soon.</div><div><br></div><=
div>Cheers,</div><div><br></div><div>Gaurav<br><br><div id=3D"AppleMailSigna=
ture">Sent from my iPhone</div><div><br>On May 16, 2018, at 7:44 PM, Gaurav D=
awra &lt;<a href=3D"mailto:gdawra.ietf@gmail.com">gdawra.ietf@gmail.com</a>&=
gt; wrote:<br><br></div><blockquote type=3D"cite"><div><meta http-equiv=3D"C=
ontent-Type" content=3D"text/html; charset=3Dutf-8"><div style=3D"word-wrap:=
 break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" dir=3D=
"auto" class=3D""><font size=3D"4" class=3D"">Hi Martin,</font><div class=3D=
""><font size=3D"4" class=3D""><br class=3D""></font></div><div class=3D""><=
font size=3D"4" class=3D"">Apologies from my end we had few internal authors=
 conversations on the points you have raised.</font></div><div class=3D""><f=
ont size=3D"4" class=3D""><br class=3D""></font></div><div class=3D""><font s=
ize=3D"4" class=3D"">Please find below my response. I will be happy to discu=
ss further, if needed.</font></div><div class=3D""><font size=3D"4" class=3D=
""><br class=3D""></font></div><div class=3D""><font size=3D"4" class=3D"">&=
lt;Gaurav&gt; inline...<br class=3D""></font><div><font size=3D"4" class=3D"=
"><br class=3D""></font><blockquote type=3D"cite" class=3D""><div class=3D""=
><font size=3D"4" class=3D"">On Apr 9, 2018, at 7:58 AM, Martin Stiemerling &=
lt;<a href=3D"mailto:mls.ietf@gmail.com" class=3D"">mls.ietf@gmail.com</a>&g=
t; wrote:</font></div><font size=3D"4" class=3D""><br class=3D"Apple-interch=
ange-newline"></font><div class=3D""><div class=3D""><font size=3D"4" class=3D=
"">Hi Gaurav,<br class=3D""><br class=3D"">This got lost on my end, sorry fo=
r this. The filter just moved these messages out of my sight... :-/<br class=
=3D""><br class=3D"">Am 15.02.18 um 05:47 schrieb Gaurav Dawra:<br class=3D"=
"></font><blockquote type=3D"cite" class=3D""><font size=3D"4" class=3D"">He=
y Martin,<br class=3D"">Sorry for late reply. Please see some comments inlin=
e[Gaurav]<br class=3D""></font><blockquote type=3D"cite" class=3D""><font si=
ze=3D"4" class=3D"">On Jan 9, 2018, at 2:25 PM, Martin Stiemerling &lt;<a hr=
ef=3D"mailto:mls.ietf@gmail.com" class=3D"">mls.ietf@gmail.com</a> &lt;<a hr=
ef=3D"mailto:mls.ietf@gmail.com" class=3D"">mailto:mls.ietf@gmail.com</a>&gt=
;&gt; wrote:<br class=3D""><br class=3D"">Hi all,<br class=3D""><br class=3D=
"">I've reviewed this document as part of the transport area review team's o=
ngoing effort to review key IETF documents. These comments were written prim=
arily for the transport area directors, but are copied to the document's aut=
hors for their information and to allow them to address any issues raised. W=
hen done at the time of IETF Last Call, the authors should consider this rev=
iew together with any other last-call comments they receive. Please always C=
C tsv-art@=E2=80=A6 if you reply to or forward this review.<br class=3D""><b=
r class=3D"">Summary:<br class=3D"">This draft has serious issues in Section=
 7.1, 7.2 and in one part of Section3, described in the review, and needs to=
 be rethought. The other sections are good AFAIK.<br class=3D""><br class=3D=
""><br class=3D"">Technicals:<br class=3D"">The overall draft looks ok, but t=
he three points below look strange and need a fix before publication IMHO:<b=
r class=3D""><br class=3D"">Both Sections, 7.1. and 7.2., are describing ide=
as, but not well proven funcationality and not even safe to use functionalit=
y. Both are some sort discussing that different paths in the network could b=
e used by the end host traffic. This sounds pretty much like the Path Aware N=
etworking Proposed Research Group (<a href=3D"https://irtf.org/panrg" class=3D=
"">https://irtf.org/panrg</a>) and hints to the fact that there is no common=
ly understand and accepted engineering solution in this space.<br class=3D""=
><br class=3D"">Section 7.1:<br class=3D"">[KANDULA04] is a really old refer=
ence that hasn't been followed up in recent times and even worse there is no=
 evidence that this is going to work good enough or stable enough under real=
 Internet traffic. Additionally, it is more than unclear how any modern TCP i=
mplementation will react to this<br class=3D""></font></blockquote><font siz=
e=3D"4" class=3D"">[Gaurav] Will get back on this.<br class=3D""></font></bl=
ockquote><font size=3D"4" class=3D""><br class=3D"">I will reply to the othe=
r email dicussing this.<br class=3D""></font></div></div></blockquote><font s=
ize=3D"4" class=3D"">&lt;Gaurav&gt; I have replied to other thread.<br class=
=3D""></font><blockquote type=3D"cite" class=3D""><div class=3D""><div class=
=3D""><font size=3D"4" class=3D""><br class=3D""></font><blockquote type=3D"=
cite" class=3D""><blockquote type=3D"cite" class=3D""><font size=3D"4" class=
=3D""><br class=3D"">Section 7.2:<br class=3D"">This section describes an id=
ea without detailing too much about any further aspects. Further it changes t=
he commonly accepted notion of what an end host can do with the network. At b=
est this would require a good definition of what an end host in your setting=
 is, e.g., a highly modified piece of (at least) software that usually not f=
ound in OS availble on the market (yet?)<br class=3D"">Further communicating=
 instantaneous path characteristics to a central point is potentially a bad i=
dea, as the data is already outdated when reported by any node.<br class=3D"=
"></font></blockquote><font size=3D"4" class=3D"">[Gaurav] I believe Authors=
 are trying to highlight that Host which is defined in (<a href=3D"https://t=
ools.ietf.org/html/draft-ietf-spring-segment-routing-15" class=3D"">https://=
tools.ietf.org/html/draft-ietf-spring-segment-routing-15</a>) can influence t=
he traffic based on the Calculations locally or jointly with the controller.=
 Implementations can decide how much Centralized -vs- localized control is a=
llowed at Host based on performance data collection.<br class=3D""></font></=
blockquote><font size=3D"4" class=3D""><br class=3D"">Performance data colle=
ction (monitoring?) isn't crucial when it comes to timely (actually real-tim=
e) reaction. However, this section isn't just about performance data collect=
ion as it is about "Performance-aware routing" this seems to try to interact=
 in real-time with the network behavior of TCP. This isn't even close to acc=
eptable.<br class=3D""><br class=3D"">I would be ok to say that it is useful=
 to collect performance data for offline analysis and improvement of the dat=
a network. However, this is at completely different magnitues of time scales=
.<br class=3D""><br class=3D"">I would recommend to remove the TCP part from=
 this section entirely.<br class=3D""></font></div></div></blockquote><div><=
font size=3D"4" class=3D"">&lt;Gaurav&gt;Ack, will update in next rev:</font=
></div><div><font size=3D"4" class=3D""><br class=3D""></font></div><div><fo=
nt size=3D"4" class=3D"">Section will read like this:</font></div><div><font=
 size=3D"4" class=3D""><br class=3D""></font></div><div><div class=3D""><div=
 style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><font size=3D"4" class=3D"">=
;<o:p class=3D""></o:p></font></div></div><div class=3D""><div style=3D"marg=
in: 0cm 0cm 0.0001pt;" class=3D""><o:p class=3D""><font size=3D"4" class=3D"=
">&nbsp;</font></o:p></div></div><div class=3D""><pre style=3D"margin: 0cm 0=
cm 0.0001pt; break-before: page; font-variant-ligatures: normal; orphans: 2;=
 widows: 2;" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-s=
ize: 18px;" class=3D"">&nbsp;&nbsp; Knowing the path associated with flows/p=
ackets, the end host may<o:p class=3D""></o:p></font></i></pre><pre style=3D=
"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" s=
tyle=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; deduce certain characteris=
tics of the path on its own, and<o:p class=3D""></o:p></font></i></pre><pre s=
tyle=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Ge=
orgia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; additionally use t=
he information supplied with path information<o:p class=3D""></o:p></font></=
i></pre><pre style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><f=
ont face=3D"Georgia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; push=
ed from the controller or received via pull request.&nbsp; The host<o:p clas=
s=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm 0.0001pt;" class=
=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-size: 18px;" class=3D=
"">&nbsp;&nbsp; may further share its path observations with the centralized=
 agent,<o:p class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm 0=
.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-size=
: 18px;" class=3D"">&nbsp;&nbsp; so that the latter may keep up-to-date netw=
ork health map to assist<o:p class=3D""></o:p></font></i></pre><pre style=3D=
"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" s=
tyle=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; other hosts with this info=
rmation.<o:p class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm=
 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-si=
ze: 18px;" class=3D"">&nbsp;</font></i></pre><pre style=3D"margin: 0cm 0cm 0=
.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-size=
: 18px;" class=3D"">&nbsp;&nbsp; For example, an application A.1 at HostA ma=
y pin a flow destined<o:p class=3D""></o:p></font></i></pre><pre style=3D"ma=
rgin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" sty=
le=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; to HostZ via Spine node Node=
5 using label stack {16005, 16011}. The<o:p class=3D""></o:p></font></i></pr=
e><pre style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><font face=3D"Georgia"=
 size=3D"4" class=3D""><i class=3D"">&nbsp;&nbsp; application A.1 may collec=
t information on packet loss, deduced from</i><o:p class=3D""></o:p></font><=
/pre><pre style=3D"margin: 0cm 0cm 0.0001pt; break-before: page; font-varian=
t-ligatures: normal; orphans: 2; widows: 2;" class=3D""><font face=3D"Georgi=
a" size=3D"4" class=3D""><i class=3D"">&nbsp;&nbsp; Other offline mechanisms=
. &nbsp;[There are some pingMesh mechanisms which </i><o:p class=3D""></o:p>=
</font></pre><pre style=3D"margin: 0cm 0cm 0.0001pt; break-before: page; fon=
t-variant-ligatures: normal; orphans: 2; widows: 2;" class=3D""><font face=3D=
"Georgia" size=3D"4" class=3D""><i class=3D"">&nbsp;&nbsp;&nbsp;Can be used h=
ere]</i><o:p class=3D""></o:p></font></pre><pre style=3D"margin: 0cm 0cm 0.0=
001pt; break-before: page; font-variant-ligatures: normal; orphans: 2; widow=
s: 2;" class=3D""><o:p class=3D""><font face=3D"Georgia" style=3D"font-size:=
 18px;" class=3D"">&nbsp;</font></o:p></pre><pre style=3D"margin: 0cm 0cm 0.=
0001pt; break-before: page; font-variant-ligatures: normal; orphans: 2; wido=
ws: 2;" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-size: 1=
8px;" class=3D"">&nbsp;&nbsp;&nbsp; Through these mechanisms information to a=
 centralized agent, e.g.<o:p class=3D""></o:p></font></i></pre><pre style=3D=
"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" s=
tyle=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; after a flow completes, or=
 periodically for longer lived flows.<o:p class=3D""></o:p></font></i></pre>=
<pre style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; Next, using b=
oth local and/or global performance data, application<o:p class=3D""></o:p><=
/font></i></pre><pre style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=
=3D""><font face=3D"Georgia" style=3D"font-size: 18px;" class=3D"">&nbsp;&nb=
sp; A.1 as well as other applications sharing the same resources in the<o:p c=
lass=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0cm 0.0001pt;" cl=
ass=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-size: 18px;" cla=
ss=3D"">&nbsp;&nbsp; DC fabric may pick up the best path for the new flow, o=
r update an<o:p class=3D""></o:p></font></i></pre><pre style=3D"margin: 0cm 0=
cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-=
size: 18px;" class=3D"">&nbsp;&nbsp; existing path (e.g.: when informed of c=
ongestion on an existing<o:p class=3D""></o:p></font></i></pre><pre style=3D=
"margin: 0cm 0cm 0.0001pt;" class=3D""><i class=3D""><font face=3D"Georgia" s=
tyle=3D"font-size: 18px;" class=3D"">&nbsp;&nbsp; path).<o:p class=3D""></o:=
p></font></i></pre><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt;" c=
lass=3D""><o:p class=3D""><font size=3D"4" class=3D"">&nbsp;</font></o:p></d=
iv></div><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt;" class=3D""=
><font size=3D"4" class=3D"">;</font></div></div></div></div><div><font size=
=3D"4" class=3D""><br class=3D""></font></div><blockquote type=3D"cite" clas=
s=3D""><div class=3D""><div class=3D""><font size=3D"4" class=3D""><br class=
=3D""><br class=3D""></font><blockquote type=3D"cite" class=3D""><blockquote=
 type=3D"cite" class=3D""><font size=3D"4" class=3D""><br class=3D"">Section=
 3, 3rd bullet point:<br class=3D"">It is the foundation of TCP that the net=
work is regarded as a black box and that you infer from the transmission of p=
ackets what the current state of the network path is. Inferring network path=
 metrics (you mention SRTT, MSS, CWND ) is a bad idea, as this would require=
d that all paths exhibit this and if not what is going to happen?<br class=3D=
"">It could be an interesting research field to change many points in TCP's b=
ehavior, but this once again points to the fact that this not the IETF works=
 but IRTF or elsewhere.<br class=3D""></font></blockquote><font size=3D"4" c=
lass=3D"">[Gaurav] Martin, Authors are trying to suggest that TCP is rightly=
 treating Network as Black Box. Authors are implying per path performance me=
trics as not cached. Is there some change in text you are suggesting?<br cla=
ss=3D""></font></blockquote><font size=3D"4" class=3D""><br class=3D""><br c=
lass=3D"">I would recommend to remove the 3rd bullet point completey. TCP is=
n't the place to remember "good" or "bad" paths. This is something the netwo=
rk could decide, e.g., rerouting TCP flows within the network or changing th=
e forwarding path in the network for particular flows (if it is not routed).=
<br class=3D""></font></div></div></blockquote><div><font size=3D"4" class=3D=
""><br class=3D""></font></div><div><font size=3D"4" class=3D"">&lt;Gaurav&g=
t; Ack, after discussion, we will remove the Section 3 - 3rd bullet point.&n=
bsp;Will update in next rev - coming shortly.</font></div><font size=3D"4" c=
lass=3D""><br class=3D""></font><blockquote type=3D"cite" class=3D""><div cl=
ass=3D""><div class=3D""><font size=3D"4" class=3D""><br class=3D"">Kind reg=
ards,<br class=3D""><br class=3D""> &nbsp;Martin<br class=3D""><br class=3D"=
"></font></div></div></blockquote></div><br class=3D""></div></div></div></b=
lockquote></div></div></blockquote></div></div></body></html>=

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From: Rob Shakir <robjs@google.com>
Date: Fri, 25 May 2018 14:38:47 -0700
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To: bruno.decraene@orange.com
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Subject: Re: [spring] IPR Poll for draft-ietf-spring-segment-routing-mpls
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--0000000000008f1196056d0e9849
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Hi Bruno, SPRING,

I'm not aware of any IPR other than that which has already been disclosed.
<https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-ietf-spring-segment-routing-mpls>

Thanks,
r.

On Thu, May 24, 2018 at 10:28 AM <bruno.decraene@orange.com> wrote:

> Hi SPRING WG,
>
>
>
> In parallel to the WGLC for draft-ietf-spring-segment-routing-mpls, we
> would like to poll for IPR.
>
>
>
> If you are aware of IPR that applies to
> draft-ietf-spring-segment-routing-mpls please respond to this email. If you
> are aware of IPR, please indicate whether it has been
>
> disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and
> 5378 provide more details).
>
>
>
> If you are an *author or contributor* please respond to this email
> regardless of whether or not you're aware of any IPR. If you are not an
> author or contributor, please explicitly respond only if you are aware of
> IPR that has not yet been disclosed.
>
>
>
> This document will not advance until IPR confirmations have been received
> from all authors and contributors.
>
>
>
> Thanks,
>
> Bruno & Rob.
>
>
>
> _________________________________________________________________________________________________________________________
>
> 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,
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> Thank you.
>
>

--0000000000008f1196056d0e9849
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Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Bruno, SPRING,<div><br></div><div>I&#39;m not aware of =
any IPR other than that which has already <a href=3D"https://datatracker.ie=
tf.org/ipr/search/?submit=3Ddraft&amp;id=3Ddraft-ietf-spring-segment-routin=
g-mpls">been disclosed.</a></div><div><br></div><div>Thanks,</div><div>r.</=
div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Thu, May 24, 2=
018 at 10:28 AM &lt;<a href=3D"mailto:bruno.decraene@orange.com">bruno.decr=
aene@orange.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">





<div lang=3D"FR" link=3D"blue" vlink=3D"purple">
<div class=3D"m_-6566565849392531846WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">Hi SPRING WG,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">In parallel to the WGLC for draft-ietf-spri=
ng-segment-routing-mpls, we would like to poll for IPR.<u></u><u></u></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">If you are aware of IPR that applies to dra=
ft-ietf-spring-segment-routing-mpls please respond to this email. If you ar=
e aware of IPR, please indicate
 whether it has been<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">disclosed in accordance with IETF IPR rules=
 (RFCs 3979, 4879, 3669 and 5378 provide more details).<u></u><u></u></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">If you are an *author or contributor* pleas=
e respond to this email regardless of whether or not you&#39;re aware of an=
y IPR. If you are not an author
 or contributor, please explicitly respond only if you are aware of IPR tha=
t has not yet been disclosed.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">This document will not advance until IPR co=
nfirmations have been received from all authors and contributors.<u></u><u>=
</u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;">Thanks,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;">Bruno &amp; Rob.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;"><u></u>=C2=A0<u></u></span></p>
</div>
<pre>______________________________________________________________________=
___________________________________________________

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 message=
s electroniques etant susceptibles d&#39;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 inf=
ormation 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 dele=
te 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.
</pre></div>

</blockquote></div>

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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
Thread-Topic: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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From: Luay Jalil <luayjalil@gmail.com>
Date: Sat, 26 May 2018 14:45:43 -0500
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To: Rob Shakir <robjs@google.com>
Cc: SPRING WG List <spring@ietf.org>
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Support

Luay


On Wed, May 16, 2018, 10:20 AM Rob Shakir <robjs@google.com> wrote:

> Hi SPRING WG,
>
> This email initiates a two week call for working group adoption
> for draft-filsfils-spring-segment-routing-policy. Please indicate your
> support, or otherwise, for adopting this draft as a working group item by *30th
> May 2018*. We are particularly interested in hearing from working group
> members that are not co-authors of this draft.
>
> As part of the discussions of adopting this draft into SPRING with the ADs
> and chairs of other WGs, there are a number of requests to the authors.
>
> 1. Please clarify in the text traffic steering with "SR policy" and its
> relationship to other traffic engineering functions. It seems to me that
> this work is generally describing how one selects and steers traffic into
> policies, rather than path calculation. Additional clarification of whether
> this is the case (or not), would be welcome to ensure that the relationship
> with other work is clear. We would ask the authors to consider whether
> sections 14.1-14.4 are required scope of this document.
>
> 2.. Consider what the core content of this document is, and how it can be
> make as concise and clear as possible. There are some specific suggestions
> that can be made here, but we would like to see this discussed with the
> working group.
>
> Additionally, there are currently 17 authors listed on this document.
> Please trim this to <= 5 front-page authors, utilising a "Contributors"
> section if required for the others.. An approach to achieving this would be
> to list ~2 editors as the front-page authors.
>
> In parallel to this adoption call, I will send an IPR call for this
> document. We will need all 17 authors to confirm their IPR position on this
> document.
>
> Thanks,
> Bruno & Rob.
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>

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<div dir=3D"auto"><div>Support<div dir=3D"auto"><br></div><div dir=3D"auto"=
>Luay</div><br><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Wed, May =
16, 2018, 10:20 AM Rob Shakir &lt;<a href=3D"mailto:robjs@google.com">robjs=
@google.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"><div dir=
=3D"ltr">Hi SPRING WG,<div><br></div><div>This email initiates a two week c=
all for working group adoption for=C2=A0draft-filsfils-spring-segment-routi=
ng-policy. Please indicate your support, or otherwise, for adopting this dr=
aft as a working group item by <b>30th May 2018</b>. We are particularly in=
terested in hearing from working group members that are not co-authors of t=
his draft.</div><div><br></div><div>As part of the discussions of adopting =
this draft into SPRING with the ADs and chairs of other WGs, there are a nu=
mber of requests to the authors.</div><div><br></div><div>1. Please clarify=
 in the text traffic steering with &quot;SR policy&quot; and its relationsh=
ip to other traffic engineering functions. It seems to me that this work is=
 generally describing how one selects and steers traffic into policies, rat=
her than path calculation. Additional clarification of whether this is the =
case (or not), would be welcome to ensure that the relationship with other =
work is clear. We would ask the authors to consider whether sections 14.1-1=
4.4 are required scope of this document.</div><div><br></div><div>2.. Consi=
der what the core content of this document is, and how it can be make as co=
ncise and clear as possible. There are some specific suggestions that can b=
e made here, but we would like to see this discussed with the working group=
.</div><div><br></div><div>Additionally, there are currently 17 authors lis=
ted on this document. Please trim this to &lt;=3D 5 front-page authors, uti=
lising a &quot;Contributors&quot; section if required for the others.. An a=
pproach to achieving this would be to list ~2 editors as the front-page aut=
hors.</div><div><br></div><div>In parallel to this adoption call, I will se=
nd an IPR call for this document. We will need all 17 authors to confirm th=
eir IPR position on this document.</div><div><br></div><div>Thanks,</div><d=
iv>Bruno &amp; Rob.</div></div>
_______________________________________________<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: Hani ELMALKY <hani.elmalky@gmail.com>
Date: Sat, 26 May 2018 14:06:19 -0700
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To: Luay Jalil <luayjalil@gmail.com>
Cc: Rob Shakir <robjs@google.com>, SPRING WG List <spring@ietf.org>
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Support

/ Hani Elmalky

On Sat, May 26, 2018 at 12:45 PM, Luay Jalil <luayjalil@gmail.com> wrote:

> Support
>
> Luay
>
>
> On Wed, May 16, 2018, 10:20 AM Rob Shakir <robjs@google.com> wrote:
>
>> Hi SPRING WG,
>>
>> This email initiates a two week call for working group adoption
>> for draft-filsfils-spring-segment-routing-policy. Please indicate your
>> support, or otherwise, for adopting this draft as a working group item by *30th
>> May 2018*. We are particularly interested in hearing from working group
>> members that are not co-authors of this draft.
>>
>> As part of the discussions of adopting this draft into SPRING with the
>> ADs and chairs of other WGs, there are a number of requests to the authors.
>>
>> 1. Please clarify in the text traffic steering with "SR policy" and its
>> relationship to other traffic engineering functions. It seems to me that
>> this work is generally describing how one selects and steers traffic into
>> policies, rather than path calculation. Additional clarification of whether
>> this is the case (or not), would be welcome to ensure that the relationship
>> with other work is clear. We would ask the authors to consider whether
>> sections 14.1-14.4 are required scope of this document.
>>
>> 2.. Consider what the core content of this document is, and how it can be
>> make as concise and clear as possible. There are some specific suggestions
>> that can be made here, but we would like to see this discussed with the
>> working group..
>>
>> Additionally, there are currently 17 authors listed on this document.
>> Please trim this to <= 5 front-page authors, utilising a "Contributors"
>> section if required for the others.. An approach to achieving this would be
>> to list ~2 editors as the front-page authors.
>>
>> In parallel to this adoption call, I will send an IPR call for this
>> document. We will need all 17 authors to confirm their IPR position on this
>> document.
>>
>> Thanks,
>> Bruno & Rob.
>> _______________________________________________
>> spring mailing list
>> spring@ietf.org
>> https://www.ietf.org/mailman/listinfo/spring
>>
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
>

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<div dir=3D"ltr">Support</div><div class=3D"gmail_extra"><br clear=3D"all">=
<div><div class=3D"gmail_signature" data-smartmail=3D"gmail_signature"><div=
 dir=3D"ltr">/ Hani Elmalky</div></div></div>
<br><div class=3D"gmail_quote">On Sat, May 26, 2018 at 12:45 PM, Luay Jalil=
 <span dir=3D"ltr">&lt;<a href=3D"mailto:luayjalil@gmail.com" target=3D"_bl=
ank">luayjalil@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmai=
l_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left=
:1ex"><div dir=3D"auto"><div>Support<div dir=3D"auto"><br></div><div dir=3D=
"auto">Luay</div><br><br><div class=3D"gmail_quote"><span class=3D""><div d=
ir=3D"ltr">On Wed, May 16, 2018, 10:20 AM Rob Shakir &lt;<a href=3D"mailto:=
robjs@google.com" target=3D"_blank">robjs@google.com</a>&gt; wrote:<br></di=
v></span><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"><span class=3D"">H=
i SPRING WG,<div><br></div><div>This email initiates a two week call for wo=
rking group adoption for=C2=A0draft-filsfils-spring-<wbr>segment-routing-po=
licy. Please indicate your support, or otherwise, for adopting this draft a=
s a working group item by <b>30th May 2018</b>. We are particularly interes=
ted in hearing from working group members that are not co-authors of this d=
raft.</div><div><br></div><div>As part of the discussions of adopting this =
draft into SPRING with the ADs and chairs of other WGs, there are a number =
of requests to the authors.</div><div><br></div><div>1. Please clarify in t=
he text traffic steering with &quot;SR policy&quot; and its relationship to=
 other traffic engineering functions. It seems to me that this work is gene=
rally describing how one selects and steers traffic into policies, rather t=
han path calculation. Additional clarification of whether this is the case =
(or not), would be welcome to ensure that the relationship with other work =
is clear. We would ask the authors to consider whether sections 14.1-14.4 a=
re required scope of this document.</div><div><br></div></span><div>2.. Con=
sider what the core content of this document is, and how it can be make as =
concise and clear as possible. There are some specific suggestions that can=
 be made here, but we would like to see this discussed with the working gro=
up..</div><span class=3D""><div><br></div><div>Additionally, there are curr=
ently 17 authors listed on this document. Please trim this to &lt;=3D 5 fro=
nt-page authors, utilising a &quot;Contributors&quot; section if required f=
or the others.. An approach to achieving this would be to list ~2 editors a=
s the front-page authors.</div><div><br></div><div>In parallel to this adop=
tion call, I will send an IPR call for this document. We will need all 17 a=
uthors to confirm their IPR position on this document.</div><div><br></div>=
<div>Thanks,</div><div>Bruno &amp; Rob.</div></span></div><span class=3D"">
______________________________<wbr>_________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" rel=3D"noreferrer" target=3D"_blank">spr=
ing@ietf.org</a><br>
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noreferrer" target=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/sp=
ring</a><br>
</span></blockquote></div></div></div>
<br>______________________________<wbr>_________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org">spring@ietf.org</a><br>
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 target=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/spring</a><br=
>
<br></blockquote></div><br></div>

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Date: Sun, 27 May 2018 14:25:46 +0200
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To: Bruno Decraene <bruno.decraene@orange.com>
Cc: SPRING WG <spring@ietf.org>,  "draft-ietf-spring-segment-routing-mpls@ietf.org" <draft-ietf-spring-segment-routing-mpls@ietf.org>
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Subject: Re: [spring] IPR Poll for draft-ietf-spring-segment-routing-mpls
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I'm not aware of any undisclosed IPR.

Thanks.
s.


On Thu, May 24, 2018, 7:28 PM <bruno.decraene@orange.com> wrote:

> Hi SPRING WG,
>
>
>
> In parallel to the WGLC for draft-ietf-spring-segment-routing-mpls, we
> would like to poll for IPR.
>
>
>
> If you are aware of IPR that applies to
> draft-ietf-spring-segment-routing-mpls please respond to this email. If you
> are aware of IPR, please indicate whether it has been
>
> disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and
> 5378 provide more details).
>
>
>
> If you are an *author or contributor* please respond to this email
> regardless of whether or not you're aware of any IPR. If you are not an
> author or contributor, please explicitly respond only if you are aware of
> IPR that has not yet been disclosed.
>
>
>
> This document will not advance until IPR confirmations have been received
> from all authors and contributors.
>
>
>
> Thanks,
>
> Bruno & Rob.
>
>
>
> _________________________________________________________________________________________________________________________
>
> 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
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> Thank you.
>
>

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<div dir=3D"auto"><div>I&#39;m not aware of any undisclosed IPR.=C2=A0<div =
dir=3D"auto"><br></div><div dir=3D"auto">Thanks.=C2=A0</div><div dir=3D"aut=
o">s.</div><br><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Thu, May =
24, 2018, 7:28 PM  &lt;<a href=3D"mailto:bruno.decraene@orange.com">bruno.d=
ecraene@orange.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">





<div lang=3D"FR" link=3D"blue" vlink=3D"purple">
<div class=3D"m_-8580020096977687014WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">Hi SPRING WG,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">In parallel to the WGLC for draft-ietf-spri=
ng-segment-routing-mpls, we would like to poll for IPR.<u></u><u></u></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">If you are aware of IPR that applies to dra=
ft-ietf-spring-segment-routing-mpls please respond to this email. If you ar=
e aware of IPR, please indicate
 whether it has been<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">disclosed in accordance with IETF IPR rules=
 (RFCs 3979, 4879, 3669 and 5378 provide more details).<u></u><u></u></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">If you are an *author or contributor* pleas=
e respond to this email regardless of whether or not you&#39;re aware of an=
y IPR. If you are not an author
 or contributor, please explicitly respond only if you are aware of IPR tha=
t has not yet been disclosed.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">This document will not advance until IPR co=
nfirmations have been received from all authors and contributors.<u></u><u>=
</u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;">Thanks,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;">Bruno &amp; Rob.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;"><u></u>=C2=A0<u></u></span></p>
</div>
<pre>______________________________________________________________________=
___________________________________________________

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Orange decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.

This message and its attachments may contain confidential or privileged inf=
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they should not be distributed, used or copied without authorisation.
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Thank you.
</pre></div>

</blockquote></div></div></div>

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From: <bruno.decraene@orange.com>
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CC: "draft-ietf-spring-segment-routing-mpls@ietf.org" <draft-ietf-spring-segment-routing-mpls@ietf.org>
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I'm not aware of non-disclosed IPR.

--Bruno

From: bruno.decraene@orange.com [mailto:bruno.decraene@orange.com]
Sent: Thursday, May 24, 2018 7:28 PM
To: SPRING WG List; draft-ietf-spring-segment-routing-mpls@ietf.org
Subject: IPR Poll for draft-ietf-spring-segment-routing-mpls

Hi SPRING WG,

In parallel to the WGLC for draft-ietf-spring-segment-routing-mpls, we woul=
d like to poll for IPR.

If you are aware of IPR that applies to draft-ietf-spring-segment-routing-m=
pls please respond to this email. If you are aware of IPR, please indicate =
whether it has been
disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and 5378=
 provide more details).

If you are an *author or contributor* please respond to this email regardle=
ss of whether or not you're aware of any IPR. If you are not an author or c=
ontributor, please explicitly respond only if you are aware of IPR that has=
 not yet been disclosed.

This document will not advance until IPR confirmations have been received f=
rom all authors and contributors.

Thanks,
Bruno & Rob.


___________________________________________________________________________=
______________________________________________



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'expediteur et le detruire ainsi que les pieces jointes. Les messages el=
ectroniques 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 inf=
ormation that may be protected by law;

they should not be distributed, used or copied without authorisation.

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te 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.

___________________________________________________________________________=
______________________________________________

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 ce message par erreur, veuillez le signaler
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ectroniques etant susceptibles d'alteration,
Orange decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.

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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">I&#8217;m not =
aware of non-disclosed IPR.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">--Bruno<o:p></=
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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><o:p>&nbsp;</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 #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;;mso-fareast-language:FR">From:</span><=
/b><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:FR"> bruno.decraene@orange.com [mailto:b=
runo.decraene@orange.com]
<br>
<b>Sent:</b> Thursday, May 24, 2018 7:28 PM<br>
<b>To:</b> SPRING WG List; draft-ietf-spring-segment-routing-mpls@ietf.org<=
br>
<b>Subject:</b> IPR Poll for draft-ietf-spring-segment-routing-mpls<o:p></o=
:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR">Hi SPRING WG,<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR">In parallel to the =
WGLC for draft-ietf-spring-segment-routing-mpls, we would like to poll for =
IPR.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR">If you are aware of=
 IPR that applies to draft-ietf-spring-segment-routing-mpls please respond =
to this email. If you are aware of IPR, please indicate
 whether it has been<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR">disclosed in accord=
ance with IETF IPR rules (RFCs 3979, 4879, 3669 and 5378 provide more detai=
ls).<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR">If you are an *auth=
or or contributor* please respond to this email regardless of whether or no=
t you're aware of any IPR. If you are not an author
 or contributor, please explicitly respond only if you are aware of IPR tha=
t has not yet been disclosed.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR">This document will =
not advance until IPR confirmations have been received from all authors and=
 contributors.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;mso-fareast-language:FR"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;;mso-fareast-language:FR">Thanks,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;;mso-fareast-language:FR">Bruno &amp; Rob.<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
<pre>______________________________________________________________________=
___________________________________________________<o:p></o:p></pre>
<pre><o:p>&nbsp;</o:p></pre>
<pre>Ce message et ses pieces jointes peuvent contenir des informations con=
fidentielles ou privilegiees et ne doivent donc<o:p></o:p></pre>
<pre>pas etre diffuses, exploites ou copies sans autorisation. Si vous avez=
 recu ce message par erreur, veuillez le signaler<o:p></o:p></pre>
<pre>a l'expediteur et le detruire ainsi que les pieces jointes. Les messag=
es electroniques etant susceptibles d'alteration,<o:p></o:p></pre>
<pre>Orange decline toute responsabilite si ce message a ete altere, deform=
e ou falsifie. Merci.<o:p></o:p></pre>
<pre><o:p>&nbsp;</o:p></pre>
<pre>This message and its attachments may contain confidential or privilege=
d information that may be protected by law;<o:p></o:p></pre>
<pre>they should not be distributed, used or copied without authorisation.<=
o:p></o:p></pre>
<pre>If you have received this email in error, please notify the sender and=
 delete this message and its attachments.<o:p></o:p></pre>
<pre>As emails may be altered, Orange is not liable for messages that have =
been modified, changed or falsified.<o:p></o:p></pre>
<pre>Thank you.<o:p></o:p></pre>
</div>
</div>
<PRE>______________________________________________________________________=
___________________________________________________

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'expediteur et le detruire ainsi que les pieces jointes. Les messages el=
ectroniques 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 inf=
ormation 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 dele=
te 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.
</PRE></body>
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From nobody Mon May 28 02:29:07 2018
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To: bruno.decraene@orange.com, SPRING WG List <spring@ietf.org>, "draft-ietf-spring-segment-routing-mpls@ietf.org" <draft-ietf-spring-segment-routing-mpls@ietf.org>
References: <10974_1527182894_5B06F62E_10974_441_1_53C29892C857584299CBF5D05346208A47A536E0@OPEXCLILM21.corporate.adroot.infra.ftgroup>
From: Martin Horneffer <maho@nic.dtag.de>
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Date: Mon, 28 May 2018 11:29:01 +0200
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Subject: Re: [spring] IPR Poll for draft-ietf-spring-segment-routing-mpls
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Im not aware of any not yet disclosed IPR.

Best regards, Martin


Am 24.05.18 um 19:28 schrieb bruno.decraene@orange.com:
>
> Hi SPRING WG,
>
> In parallel to the WGLC for draft-ietf-spring-segment-routing-mpls, we 
> would like to poll for IPR.
>
> If you are aware of IPR that applies to 
> draft-ietf-spring-segment-routing-mpls please respond to this email. 
> If you are aware of IPR, please indicate whether it has been
>
> disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and 
> 5378 provide more details).
>
> If you are an *author or contributor* please respond to this email 
> regardless of whether or not you're aware of any IPR. If you are not 
> an author or contributor, please explicitly respond only if you are 
> aware of IPR that has not yet been disclosed.
>
> This document will not advance until IPR confirmations have been 
> received from all authors and contributors.
>
> Thanks,
>
> Bruno & Rob.
>
> _________________________________________________________________________________________________________________________
>
> 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
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring


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    <span style="font-size: 10pt; color: black;" lang="EN-US">Im not
      aware of any not yet disclosed IPR.</span><br>
    <span style="font-size: 10pt; color: black;" lang="EN-US"></span><br>
    <span style="font-size: 10pt; color: black;" lang="EN-US">Best
      regards, Martin<br>
    </span><br>
    <br>
    <div class="moz-cite-prefix">Am 24.05.18 um 19:28 schrieb
      <a class="moz-txt-link-abbreviated" href="mailto:bruno.decraene@orange.com">bruno.decraene@orange.com</a>:<br>
    </div>
    <blockquote type="cite"
cite="mid:10974_1527182894_5B06F62E_10974_441_1_53C29892C857584299CBF5D05346208A47A536E0@OPEXCLILM21.corporate.adroot.infra.ftgroup">
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        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US">Hi SPRING
            WG,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US">In parallel
            to the WGLC for draft-ietf-spring-segment-routing-mpls, we
            would like to poll for IPR.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US">If you are
            aware of IPR that applies to
            draft-ietf-spring-segment-routing-mpls please respond to
            this email. If you are aware of IPR, please indicate whether
            it has been<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US">disclosed in
            accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and
            5378 provide more details).<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US">If you are
            an *author or contributor* please respond to this email
            regardless of whether or not you're aware of any IPR. If you
            are not an author or contributor, please explicitly respond
            only if you are aware of IPR that has not yet been
            disclosed.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US">This
            document will not advance until IPR confirmations have been
            received from all authors and contributors.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR">Thanks,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR">Bruno &amp; Rob.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;"><o:p></o:p></span></p>
      </div>
      <pre>_________________________________________________________________________________________________________________________

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.
</pre>
      <!--'"--><br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
spring mailing list
<a class="moz-txt-link-abbreviated" href="mailto:spring@ietf.org">spring@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/spring">https://www.ietf.org/mailman/listinfo/spring</a>
</pre>
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To: bruno.decraene@orange.com, SPRING WG <spring@ietf.org>, draft-ietf-spring-segment-routing-mpls@ietf.org
References: <10974_1527182894_5B06F62E_10974_441_1_53C29892C857584299CBF5D05346208A47A536E0@OPEXCLILM21.corporate.adroot.infra.ftgroup>
From: "Clarence Filsfils (cfilsfil)" <cfilsfil@cisco.com>
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Date: Mon, 28 May 2018 14:46:00 +0200
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Subject: Re: [spring] IPR Poll for draft-ietf-spring-segment-routing-mpls
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I am not aware of any IPR beyond what is already disclosed

Cheers,
Clarence

On 24/05/2018 19:28, bruno.decraene@orange.com wrote:
> Hi SPRING WG,
> 
> In parallel to the WGLC for draft-ietf-spring-segment-routing-mpls, we 
> would like to poll for IPR.
> 
> If you are aware of IPR that applies to 
> draft-ietf-spring-segment-routing-mpls please respond to this email. If 
> you are aware of IPR, please indicate whether it has been
> 
> disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and 
> 5378 provide more details).
> 
> If you are an *author or contributor* please respond to this email 
> regardless of whether or not you're aware of any IPR. If you are not an 
> author or contributor, please explicitly respond only if you are aware 
> of IPR that has not yet been disclosed.
> 
> This document will not advance until IPR confirmations have been 
> received from all authors and contributors.
> 
> Thanks,
> 
> Bruno & Rob.
> 
> _________________________________________________________________________________________________________________________
> 
> 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.
> 


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To: bruno.decraene@orange.com, SPRING WG List <spring@ietf.org>, "draft-ietf-spring-segment-routing-mpls@ietf.org" <draft-ietf-spring-segment-routing-mpls@ietf.org>
References: <10974_1527182894_5B06F62E_10974_441_1_53C29892C857584299CBF5D05346208A47A536E0@OPEXCLILM21.corporate.adroot.infra.ftgroup>
From: Ahmed Bashandy <abashandy.ietf@gmail.com>
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Date: Mon, 28 May 2018 14:04:07 -0700
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Subject: Re: [spring] IPR Poll for draft-ietf-spring-segment-routing-mpls
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I am not aware of any IPR that has not already been disclosed


Ahmed



On 5/24/18 10:28 AM, bruno.decraene@orange.com wrote:
>
> Hi SPRING WG,
>
> In parallel to the WGLC for draft-ietf-spring-segment-routing-mpls, we 
> would like to poll for IPR.
>
> If you are aware of IPR that applies to 
> draft-ietf-spring-segment-routing-mpls please respond to this email. 
> If you are aware of IPR, please indicate whether it has been
>
> disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and 
> 5378 provide more details).
>
> If you are an *author or contributor* please respond to this email 
> regardless of whether or not you're aware of any IPR. If you are not 
> an author or contributor, please explicitly respond only if you are 
> aware of IPR that has not yet been disclosed.
>
> This document will not advance until IPR confirmations have been 
> received from all authors and contributors.
>
> Thanks,
>
> Bruno & Rob.
>
> _________________________________________________________________________________________________________________________
>
> 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.


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    <p>I am not aware of any IPR that has not already been disclosed</p>
    <p><br>
    </p>
    <p>Ahmed</p>
    <p><br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 5/24/18 10:28 AM,
      <a class="moz-txt-link-abbreviated" href="mailto:bruno.decraene@orange.com">bruno.decraene@orange.com</a> wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:10974_1527182894_5B06F62E_10974_441_1_53C29892C857584299CBF5D05346208A47A536E0@OPEXCLILM21.corporate.adroot.infra.ftgroup">
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        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US">Hi SPRING
            WG,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US">In parallel
            to the WGLC for draft-ietf-spring-segment-routing-mpls, we
            would like to poll for IPR.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US">If you are
            aware of IPR that applies to
            draft-ietf-spring-segment-routing-mpls please respond to
            this email. If you are aware of IPR, please indicate whether
            it has been<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US">disclosed in
            accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and
            5378 provide more details).<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US">If you are
            an *author or contributor* please respond to this email
            regardless of whether or not you're aware of any IPR. If you
            are not an author or contributor, please explicitly respond
            only if you are aware of IPR that has not yet been
            disclosed.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US">This
            document will not advance until IPR confirmations have been
            received from all authors and contributors.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR" lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR">Thanks,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:&quot;Courier
            New&quot;;mso-fareast-language:FR">Bruno &amp; Rob.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;"><o:p></o:p></span></p>
      </div>
      <pre>_________________________________________________________________________________________________________________________

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.
</pre>
    </blockquote>
    <br>
  </body>
</html>

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Date: Mon, 28 May 2018 14:23:26 -0700
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: <bruno.decraene@orange.com>, SPRING WG List <spring@ietf.org>, "draft-ietf-spring-segment-routing-mpls@ietf.org" <draft-ietf-spring-segment-routing-mpls@ietf.org>
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Thread-Topic: [spring] IPR Poll for draft-ietf-spring-segment-routing-mpls
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Subject: Re: [spring] IPR Poll for draft-ietf-spring-segment-routing-mpls
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Hi Bruno,

 

I'm not aware of any IPR other than that already been disclosed.

Thanks!

 

Cheers,

Jeff

From: spring <spring-bounces@ietf.org> on behalf of <bruno.decraene@orange.com>
Date: Thursday, May 24, 2018 at 10:28
To: SPRING WG List <spring@ietf.org>, "draft-ietf-spring-segment-routing-mpls@ietf.org" <draft-ietf-spring-segment-routing-mpls@ietf.org>
Subject: [spring] IPR Poll for draft-ietf-spring-segment-routing-mpls

 

Hi SPRING WG,

 

In parallel to the WGLC for draft-ietf-spring-segment-routing-mpls, we would like to poll for IPR.

 

If you are aware of IPR that applies to draft-ietf-spring-segment-routing-mpls please respond to this email. If you are aware of IPR, please indicate whether it has been

disclosed in accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and 5378 provide more details).

 

If you are an *author or contributor* please respond to this email regardless of whether or not you're aware of any IPR. If you are not an author or contributor, please explicitly respond only if you are aware of IPR that has not yet been disclosed.

 

This document will not advance until IPR confirmations have been received from all authors and contributors.

 

Thanks,

Bruno & Rob.

 
_________________________________________________________________________________________________________________________
 
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue vlink=3Dp=
urple><div class=3DWordSection1><p class=3DMsoNormal>Hi Bruno,<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>I'm not aware of any=
 IPR other than that already been disclosed.<o:p></o:p></p><p class=3DMsoNorma=
l>Thanks!<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p clas=
s=3DMsoNormal><span style=3D'color:black'>Cheers,<o:p></o:p></span></p></div><p =
class=3DMsoNormal><span style=3D'color:black'>Jeff</span><o:p></o:p></p><div sty=
le=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p=
 class=3DMsoNormal><b><span style=3D'font-size:12.0pt;color:black'>From: </span>=
</b><span style=3D'font-size:12.0pt;color:black'>spring &lt;spring-bounces@iet=
f.org&gt; on behalf of &lt;bruno.decraene@orange.com&gt;<br><b>Date: </b>Thu=
rsday, May 24, 2018 at 10:28<br><b>To: </b>SPRING WG List &lt;spring@ietf.or=
g&gt;, &quot;draft-ietf-spring-segment-routing-mpls@ietf.org&quot; &lt;draft=
-ietf-spring-segment-routing-mpls@ietf.org&gt;<br><b>Subject: </b>[spring] I=
PR Poll for draft-ietf-spring-segment-routing-mpls<o:p></o:p></span></p></di=
v><div><p class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><p class=3DMsoNormal><a n=
ame=3D"_MailOriginalBody"><span style=3D'font-size:10.0pt;font-family:"Courier N=
ew";mso-fareast-language:FR'>Hi SPRING WG,</span><o:p></o:p></a></p><p class=
=3DMsoNormal><span style=3D'mso-bookmark:_MailOriginalBody'><span style=3D'font-si=
ze:10.0pt;font-family:"Courier New";mso-fareast-language:FR'>&nbsp;</span><o=
:p></o:p></span></p><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOrigin=
alBody'><span style=3D'font-size:10.0pt;font-family:"Courier New";mso-fareast-=
language:FR'>In parallel to the WGLC for draft-ietf-spring-segment-routing-m=
pls, we would like to poll for IPR.</span><o:p></o:p></span></p><p class=3DMso=
Normal><span style=3D'mso-bookmark:_MailOriginalBody'><span style=3D'font-size:1=
0.0pt;font-family:"Courier New";mso-fareast-language:FR'>&nbsp;</span><o:p><=
/o:p></span></p><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOriginalBo=
dy'><span style=3D'font-size:10.0pt;font-family:"Courier New";mso-fareast-lang=
uage:FR'>If you are aware of IPR that applies to draft-ietf-spring-segment-r=
outing-mpls please respond to this email. If you are aware of IPR, please in=
dicate whether it has been</span><o:p></o:p></span></p><p class=3DMsoNormal><s=
pan style=3D'mso-bookmark:_MailOriginalBody'><span style=3D'font-size:10.0pt;fon=
t-family:"Courier New";mso-fareast-language:FR'>disclosed in accordance with=
 IETF IPR rules (RFCs 3979, 4879, 3669 and 5378 provide more details).</span=
><o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOri=
ginalBody'><span style=3D'font-size:10.0pt;font-family:"Courier New";mso-farea=
st-language:FR'>&nbsp;</span><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-bookmark:_MailOriginalBody'><span style=3D'font-size:10.0pt;font-fa=
mily:"Courier New";mso-fareast-language:FR'>If you are an *author or contrib=
utor* please respond to this email regardless of whether or not you're aware=
 of any IPR. If you are not an author or contributor, please explicitly resp=
ond only if you are aware of IPR that has not yet been disclosed.</span><o:p=
></o:p></span></p><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOriginal=
Body'><span style=3D'font-size:10.0pt;font-family:"Courier New";mso-fareast-la=
nguage:FR'>&nbsp;</span><o:p></o:p></span></p><p class=3DMsoNormal><span style=
=3D'mso-bookmark:_MailOriginalBody'><span style=3D'font-size:10.0pt;font-family:=
"Courier New";mso-fareast-language:FR'>This document will not advance until =
IPR confirmations have been received from all authors and contributors.</spa=
n><o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOr=
iginalBody'><span style=3D'font-size:10.0pt;font-family:"Courier New";mso-fare=
ast-language:FR'>&nbsp;</span><o:p></o:p></span></p><p class=3DMsoNormal><span=
 style=3D'mso-bookmark:_MailOriginalBody'><span style=3D'font-size:10.0pt;font-f=
amily:"Courier New";mso-fareast-language:FR'>Thanks,</span><o:p></o:p></span=
></p><p class=3DMsoNormal><span style=3D'mso-bookmark:_MailOriginalBody'><span s=
tyle=3D'font-size:10.0pt;font-family:"Courier New";mso-fareast-language:FR'>Br=
uno &amp; Rob.</span><o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'm=
so-bookmark:_MailOriginalBody'><span style=3D'font-size:10.0pt;font-family:"Ar=
ial",sans-serif'>&nbsp;</span><o:p></o:p></span></p><pre><span style=3D'mso-bo=
okmark:_MailOriginalBody'>__________________________________________________=
_______________________________________________________________________<o:p>=
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bsp;</o:p></span></pre><pre><span style=3D'mso-bookmark:_MailOriginalBody'>Ce =
message et ses pieces jointes peuvent contenir des informations confidentiel=
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ans autorisation. Si vous avez recu ce message par erreur, veuillez le signa=
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>a l'expediteur et le detruire ainsi que les pieces jointes. Les messages el=
ectroniques etant susceptibles d'alteration,<o:p></o:p></span></pre><pre><sp=
an style=3D'mso-bookmark:_MailOriginalBody'>Orange decline toute responsabilit=
e si ce message a ete altere, deforme ou falsifie. Merci.<o:p></o:p></span><=
/pre><pre><span style=3D'mso-bookmark:_MailOriginalBody'><o:p>&nbsp;</o:p></sp=
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and delete this message and its attachments.<o:p></o:p></span></pre><pre><sp=
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From nobody Tue May 29 06:48:08 2018
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To: Huzhibo <huzhibo@huawei.com>, "zali@cisco.com" <zali@cisco.com>, "draft-ali-spring-srv6-oam@ietf.org" <draft-ali-spring-srv6-oam@ietf.org>, "spring@ietf.org" <spring@ietf.org>
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From: Loa Andersson <loa@pi.nu>
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Date: Tue, 29 May 2018 15:48:01 +0200
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Subject: Re: [spring] About draft-ali-spring-srv6-oam-00
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Folks,

I thought we had an agreement to remove the O-bit. As ZhiBo Hu points
out other drafts drops it.

The obvious reason to not use an O-bit is that if it ever is part of
what an multipath functions hash on it will csue OAM traffic and
"normal" traffic to use different paths. This defeats the idea with
OAM traffic.

/Loa

On 2018-05-16 06:56, Huzhibo wrote:
> Hi,
> 
> draft-ali-spring-srv6-oam-00 says The OAM packets are identified by 
> setting the O-bit in SRHBut I Notice the latest 
> I-D.6man-segment-routing-headerhas removed O-bit in the SRH extension 
> header. I want to confirm that draft-ali-spring-srv6-oam-00 will also 
> remove o-bit or keep the o-bit in the later version?
> 
> Ths
> 
> ZhiBo Hu
> 
> 
> 
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
> 

-- 


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


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From: "Zafar Ali (zali)" <zali@cisco.com>
To: Loa Andersson <loa@pi.nu>, Huzhibo <huzhibo@huawei.com>, "draft-ali-spring-srv6-oam@ietf.org" <draft-ali-spring-srv6-oam@ietf.org>, "spring@ietf.org" <spring@ietf.org>
CC: Lizhenbin <lizhenbin@huawei.com>, Yangang <yangang@huawei.com>, "Zafar Ali (zali)" <zali@cisco.com>
Thread-Topic: [spring] About draft-ali-spring-srv6-oam-00
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From nobody Tue May 29 22:39:51 2018
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Subject: [spring] I-D Action: draft-ietf-spring-segment-routing-msdc-09.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           : BGP-Prefix Segment in large-scale data centers
        Authors         : Clarence Filsfils
                          Stefano Previdi
                          Gaurav Dawra
                          Ebben Aries
                          Petr Lapukhov
	Filename        : draft-ietf-spring-segment-routing-msdc-09.txt
	Pages           : 24
	Date            : 2018-05-29

Abstract:
   This document describes the motivation and benefits for applying
   segment routing in BGP-based large-scale data-centers.  It describes
   the design to deploy segment routing in those data-centers, for both
   the MPLS and IPv6 dataplanes.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-spring-segment-routing-msdc/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-spring-segment-routing-msdc-09
https://datatracker.ietf.org/doc/html/draft-ietf-spring-segment-routing-msdc-09

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-spring-segment-routing-msdc-09


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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--_000_a916629f516c4aac8cea247a032882ebXCHALN008ciscocom_--


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From: Rob Shakir <robjs@google.com>
Date: Wed, 30 May 2018 07:56:02 -0700
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To: "Ketan Talaulikar (ketant)" <ketant@cisco.com>, SPRING WG List <spring@ietf.org>
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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--000000000000704078056d6d8d05
Content-Type: text/plain; charset="UTF-8"

Thanks Ketan.

We're also pending one IPR statement from Steven Lin -- I've dropped him a
note to follow up on this.

If we have Steven's email by when you're ready to submit this draft, then
based on the support on the list please submit it with the revised
(adopted) name.

I look forward to seeing the edits and the WG iterating on this document.

Thanks,
r.

On Wed, May 30, 2018 at 7:32 AM Ketan Talaulikar (ketant) <ketant@cisco.com>
wrote:

> Hi Rob,
>
>
>
> We are working on posting the updated drafts with the trimmed author list
> by this weekend.
>
>
>
> Thanks,
>
> Ketan
>
>
>
> *From:* Rob Shakir <robjs@google.com>
> *Sent:* 21 May 2018 20:42
> *To:* Ketan Talaulikar (ketant) <ketant@cisco.com>
> *Cc:* SPRING WG List <spring@ietf.org>
> *Subject:* Re: [spring] Working Group Adoption Call for
> draft-filsfils-spring-segment-routing-policy
>
>
>
> Ketan,
>
>
>
> Thanks for the work on this -- this is definitely a good step to moving
> towards these documents being clearer and more addressable.
>
>
>
> Just FYI, there is still an outstanding point around the authors for the
> document under review here (draft-filsfils-spring-segment-routing-policy).
>
>
>
> Kind regards,
>
> r.
>
>
>
> On Mon, May 21, 2018 at 1:44 AM Ketan Talaulikar (ketant) <
> ketant@cisco.com> wrote:
>
> Hello Chairs/All,
>
>
>
> At the IETF London and afterwards over the mailing list, the chairs have
> asked us to split the SR Policy draft into sub-documents to allow for
> faster proceeding of the core concepts. As asked and discussed, the authors
> have proceeded to split draft-filsfils-spring-segment-routing-policy-05 as
> follows:
>
>
>
> 1)     The core architecture of SR Policy has been published
> <https://tools.ietf.org/html/draft-filsfils-spring-segment-routing-policy-06>
> as draft-filsfils-spring-segment-routing-policy-06.
>
> 2)     The section 13 on traffic counters has been moved to an existing
> draft and a new version of draft-ali-spring-sr-traffic-accounting-01 has
> been posted
> <https://tools.ietf.org/html/draft-ali-spring-sr-traffic-accounting-01>,
> accordingly.
>
> 3)     The contents of section 14, the Appendix, and a few other sections
> have been published
> <https://tools.ietf.org/html/draft-filsfils-spring-sr-policy-considerations-00>
> as a new informational draft,
> draft-filsfils-spring-sr-policy-considerations-00.
>
>
>
> Please let know if you have any questions or feedback.
>
>
>
> Thanks,
>
> Ketan (on behalf of authors of
> draft-filsfils-spring-segment-routing-policy)
>
>
>
> *From:* spring <spring-bounces@ietf.org> *On Behalf Of *Rob Shakir
> *Sent:* 16 May 2018 20:50
> *To:* SPRING WG List <spring@ietf.org>
> *Subject:* [spring] Working Group Adoption Call for
> draft-filsfils-spring-segment-routing-policy
>
>
>
> Hi SPRING WG,
>
>
>
> This email initiates a two week call for working group adoption
> for draft-filsfils-spring-segment-routing-policy. Please indicate your
> support, or otherwise, for adopting this draft as a working group item by *30th
> May 2018*. We are particularly interested in hearing from working group
> members that are not co-authors of this draft.
>
>
>
> As part of the discussions of adopting this draft into SPRING with the ADs
> and chairs of other WGs, there are a number of requests to the authors.
>
>
>
> 1. Please clarify in the text traffic steering with "SR policy" and its
> relationship to other traffic engineering functions. It seems to me that
> this work is generally describing how one selects and steers traffic into
> policies, rather than path calculation. Additional clarification of whether
> this is the case (or not), would be welcome to ensure that the relationship
> with other work is clear. We would ask the authors to consider whether
> sections 14.1-14.4 are required scope of this document.
>
>
>
> 2.. Consider what the core content of this document is, and how it can be
> make as concise and clear as possible. There are some specific suggestions
> that can be made here, but we would like to see this discussed with the
> working group.
>
>
>
> Additionally, there are currently 17 authors listed on this document.
> Please trim this to <= 5 front-page authors, utilising a "Contributors"
> section if required for the others.. An approach to achieving this would be
> to list ~2 editors as the front-page authors.
>
>
>
> In parallel to this adoption call, I will send an IPR call for this
> document. We will need all 17 authors to confirm their IPR position on this
> document.
>
>
>
> Thanks,
>
> Bruno & Rob.
>
>

--000000000000704078056d6d8d05
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Thanks Ketan.<div><br></div><div>We&#39;re also pending on=
e IPR statement from Steven Lin -- I&#39;ve dropped him a note to follow up=
 on this.</div><div><br></div><div>If we have Steven&#39;s email by when yo=
u&#39;re ready to submit this draft, then based on the support on the list =
please submit it with the revised (adopted) name.</div><div><br></div><div>=
I look forward to seeing the edits and the WG iterating on this document.</=
div><div><br></div><div>Thanks,</div><div>r.</div><br><div class=3D"gmail_q=
uote"><div dir=3D"ltr">On Wed, May 30, 2018 at 7:32 AM Ketan Talaulikar (ke=
tant) &lt;<a href=3D"mailto:ketant@cisco.com">ketant@cisco.com</a>&gt; wrot=
e:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bo=
rder-left:1px #ccc solid;padding-left:1ex">





<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"m_-6020049474574460641WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">Hi Rob,<u></u><u></u><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d"><u></u>=C2=A0<u></u></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">We are working on post=
ing the updated drafts with the trimmed author list by this weekend.<u></u>=
<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d"><u></u>=C2=A0<u></u></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">Thanks,<u></u><u></u><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">Ketan<u></u><u></u></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d"><u></u>=C2=A0<u></u></=
span></p>
<p class=3D"MsoNormal"><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"> Rob Shakir &lt;<a href=3D"mail=
to:robjs@google.com" target=3D"_blank">robjs@google.com</a>&gt;
<br>
<b>Sent:</b> 21 May 2018 20:42<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> SPRING WG List &lt;<a href=3D"mailto:spring@ietf.org" target=3D"=
_blank">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> Re: [spring] Working Group Adoption Call for draft-filsfils=
-spring-segment-routing-policy<u></u><u></u></span></p></div></div><div lan=
g=3D"EN-US" link=3D"blue" vlink=3D"purple"><div class=3D"m_-602004947457446=
0641WordSection1">
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">Ketan,<u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks for the work on this -- this is definitely a =
good step to moving towards these documents being clearer and more addressa=
ble.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Just FYI, there is still an outstanding point around=
 the authors for the document under review here (draft-filsfils-spring-segm=
ent-routing-policy).=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">Kind regards,<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">On Mon, May 21, 2018 at 1:44 AM Ketan Talaulikar (ke=
tant) &lt;<a href=3D"mailto:ketant@cisco.com" target=3D"_blank">ketant@cisc=
o.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-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">Hello Chairs/All,
</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">=C2=A0</span><u></u><u=
></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">At the IETF London and=
 afterwards over the mailing list, the chairs have asked us to split
 the SR Policy draft into sub-documents to allow for faster proceeding of t=
he core concepts. As asked and discussed, the authors have proceeded to spl=
it draft-filsfils-spring-segment-routing-policy-05 as follows:
</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">=C2=A0</span><u></u><u=
></u></p>
<p class=3D"m_-6020049474574460641m7899759888214640910msolistparagraph"><sp=
an lang=3D"EN-IN" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;=
,sans-serif;color:#1f497d">1)</span><span lang=3D"EN-IN" style=3D"font-size=
:7.0pt;color:#1f497d">=C2=A0=C2=A0=C2=A0=C2=A0
</span><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-family:&quot;Cal=
ibri&quot;,sans-serif;color:#1f497d">The core architecture of SR Policy has=
 been
<a href=3D"https://tools.ietf.org/html/draft-filsfils-spring-segment-routin=
g-policy-06" target=3D"_blank">
published</a> as draft-filsfils-spring-segment-routing-policy-06. </span><u=
></u><u></u></p>
<p class=3D"m_-6020049474574460641m7899759888214640910msolistparagraph"><sp=
an lang=3D"EN-IN" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;=
,sans-serif;color:#1f497d">2)</span><span lang=3D"EN-IN" style=3D"font-size=
:7.0pt;color:#1f497d">=C2=A0=C2=A0=C2=A0=C2=A0
</span><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-family:&quot;Cal=
ibri&quot;,sans-serif;color:#1f497d">The section 13 on traffic counters has=
 been moved to an existing draft and a new version of draft-ali-spring-sr-t=
raffic-accounting-01 has been
<a href=3D"https://tools.ietf.org/html/draft-ali-spring-sr-traffic-accounti=
ng-01" target=3D"_blank">
posted</a>, accordingly. </span><u></u><u></u></p>
<p class=3D"m_-6020049474574460641m7899759888214640910msolistparagraph"><sp=
an lang=3D"EN-IN" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;=
,sans-serif;color:#1f497d">3)</span><span lang=3D"EN-IN" style=3D"font-size=
:7.0pt;color:#1f497d">=C2=A0=C2=A0=C2=A0=C2=A0
</span><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-family:&quot;Cal=
ibri&quot;,sans-serif;color:#1f497d">The contents of section 14, the Append=
ix, and a few other sections have been
<a href=3D"https://tools.ietf.org/html/draft-filsfils-spring-sr-policy-cons=
iderations-00" target=3D"_blank">
published</a> as a new informational draft,=C2=A0 draft-filsfils-spring-sr-=
policy-considerations-00.=C2=A0
</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">=C2=A0</span><u></u><u=
></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">Please let know if you=
 have any questions or feedback.</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">=C2=A0</span><u></u><u=
></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">Thanks,</span><u></u><=
u></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">Ketan (on behalf of au=
thors of draft-filsfils-spring-segment-routing-policy)</span><u></u><u></u>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1f497d">=C2=A0</span><u></u><u=
></u></p>
<p class=3D"MsoNormal"><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"> spring &lt;<a href=3D"mailto:s=
pring-bounces@ietf.org" target=3D"_blank">spring-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Rob Shakir<br>
<b>Sent:</b> 16 May 2018 20:50<br>
<b>To:</b> SPRING WG List &lt;<a href=3D"mailto:spring@ietf.org" target=3D"=
_blank">spring@ietf.org</a>&gt;<br>
<b>Subject:</b> [spring] Working Group Adoption Call for draft-filsfils-spr=
ing-segment-routing-policy</span><u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<div>
<p class=3D"MsoNormal">Hi SPRING WG,<u></u><u></u></p>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">This email initiates a two week call for working gro=
up adoption for=C2=A0draft-filsfils-spring-segment-routing-policy. Please i=
ndicate your support, or otherwise, for adopting this draft
 as a working group item by <b>30th May 2018</b>. We are particularly inter=
ested in hearing from working group members that are not co-authors of this=
 draft.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">As part of the discussions of adopting this draft in=
to SPRING with the ADs and chairs of other WGs, there are a number of reque=
sts to the authors.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">1. Please clarify in the text traffic steering with =
&quot;SR policy&quot; and its relationship to other traffic engineering fun=
ctions. It seems to me that this work is generally describing
 how one selects and steers traffic into policies, rather than path calcula=
tion. Additional clarification of whether this is the case (or not), would =
be welcome to ensure that the relationship with other work is clear. We wou=
ld ask the authors to consider whether
 sections 14.1-14.4 are required scope of this document.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">2.. Consider what the core content of this document =
is, and how it can be make as concise and clear as possible. There are some=
 specific suggestions that can be made here, but we
 would like to see this discussed with the working group.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Additionally, there are currently 17 authors listed =
on this document. Please trim this to &lt;=3D 5 front-page authors, utilisi=
ng a &quot;Contributors&quot; section if required for the others..
 An approach to achieving this would be to list ~2 editors as the front-pag=
e authors.<u></u><u></u></p>
</div>
</div>
</div>
</div>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">In parallel to this adoption call, I will send an IP=
R call for this document. We will need all 17 authors to confirm their IPR =
position on this document.<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">Bruno &amp; Rob.<u></u><u></u></p>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</div>

</blockquote></div></div>

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To: adrian@olddog.co.uk, bruno.decraene@orange.com, 'SPRING WG List' <spring@ietf.org>
Cc: draft-ietf-spring-segment-routing-mpls@ietf.org
References: <28960_1527182067_5B06F2F3_28960_194_1_53C29892C857584299CBF5D05346208A47A53592@OPEXCLILM21.corporate.adroot.infra.ftgroup> <00e601d3f409$f3b5b050$db2110f0$@olddog.co.uk>
From: Ahmed Bashandy <abashandy.ietf@gmail.com>
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Subject: Re: [spring] WG Last Call for draft-ietf-spring-segment-routing-mpls-13
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Thanks a lot for the thorough review

I will take care of the comments in next version and I reply to this 
email explaining how they were addressed


Ahmed


On 5/25/18 2:22 AM, Adrian Farrel wrote:
>
> Hi,
>
> I think it is well past time that we completed this foundation work
>
> and got an RFC published. So I support passing this draft to the AD
>
> again.
>
> However, we do need to clean it up first. Hopefully this won't be a
>
> lot of effort for the editors as nearly all I found were editorial
>
> nits.
>
> As a side comment, it isn't a success that section 2.5 is so large.
>
> Full one quarter of the document is dedicated to the edge case of
>
> collision avoidance. That said, I don't have a better solution.
>
> Thanks for the work.
>
> Adrian
>
> ====
>
> idnits isn't as clean as it could be. In particular:
>
> - 2.5.2.1 uses IP address 1.1.1.1 and should pick one from RFC 6890.
>
> - Missing normative reference for RFC 8174
>
> - [I-D.ietf-idr-segment-routing-te-policy] is not used
>
> - [I-D.ietf-ospf-ospfv3-segment-routing-extensions] and
>
> [I-D.ietf-ospf-segment-routing-extensions] have spurious spaces in
>
> the filenames
>
> ---
>
> You'll need to move the "Requirements Language" to be Section 1.1.
>
> ---
>
> Section 2
>
> s/link State IGPs/link state IGPs/
>
> s/Segment ID (SIDs)/Segment IDs (SIDs)/
>
> ---
>
> You use SRGB in 2.2 before you expand it in 2.3
>
> ---
>
> 2.2
>
> oThe label value MUST be unique within the router on which the MCC
>
> is running. i.e. the label MUST only be used to represent the SID.
>
> I don't think you mean this. You have written that the label value has
>
> be unique which means that only one label value can be assigned to a
>
> SID.
>
> I think what you mean is that
>
> oThe label value MUST NOT be used for any other purpose on the
>
> router on which the MCC is running. I.e. the label MUST NOT be
>
> used to represent more than one SID or for any other forwarding
>
> purpose on the router.
>
> ---
>
> 2.2
>
> Unusual to have a normative reference to an IANA URL as you have for
>
> [reserved-MPLS]. Besides, the URL you give is 404.
>
> You would do better to reference RFC 7274.
>
> You might also fix the language and terminology, thus...
>
> OLD
>
> oThe label value MUST NOT be identical to or within the range of
>
> any reserved label value or range [reserved-MPLS], respectively.
>
> NEW
>
> oThe label value MUST NOT come from the range of special purpose
>
> labels [RFC7274].
>
> ---
>
> 2.3 ditto
>
> OLD
>
> oEvery range in the list of ranges specifying the SRGB MUST NOT
>
> cover or overlap with a reserved label value or range [reserved-
>
> MPLS], respectively.
>
> NEW
>
> oEvery range in the list of ranges specifying the SRGB MUST NOT
>
> cover or overlap with the range of special purpose labels
>
> [RFC7274].
>
> ---
>
> 2.3
>
> oIf the SRGB of a node does not conform to the structure specified
>
> in this section or to the previous two rules, then this SRGB is
>
> completely ignored and the node is treated as if it does not have
>
> an SRGB.
>
> Can we fix this passive voice? Presume the intention is that the
>
> advertisement of this SRGB is ignored by any routing protocol speakers
>
> that receive it.
>
> Two points of clarification I think we should add:
>
> 1. The *whole* SRGB is ignored, not simply the range of labels in a set
>
> of ranges that is at fault
>
> 2. The term "ignore" in this case means that no SR action is taken, but
>
> the SRGB advertisement continues to be propagated within the routing
>
> protocol.
>
> ---
>
> 2.3 (bottom of page 5)
>
> s/reserved label/special purpose label/
>
> ---
>
> 2.3
>
> s/contiguous range of label/contiguous range of labels/
>
> ---
>
> 2.5
>
> s/(e.g.,over/(e.g., over/
>
> s/map to the same incoming/maps to the same incoming/
>
> s/FECk} maps to the same/FECk} map to the same/
>
> s/non-zero algo/non-zero algorithm/
>
> ---
>
> 2.5.1
>
> The plural of FEC is FECs not FEC's
>
> ---
>
> 2.5.1
>
> 2. if more than one competing FEC remains after step 1, sort them and
>
> select the smallest numerical FEC value
>
> Is sorting required? Can we just have...
>
> 2. if more than one competing FEC remains after step 1, select the
>
> smallest numerical FEC value
>
> ---
>
> 2.5.1
>
> An implementation may choose to implement additional
>
> s/may/MAY/
>
> ---
>
> 2.5.2
>
> s/THEN/then/
>
> ---
>
> 2.7
>
> s/plan./plane./
>
> ---
>
> Terminology for adjacency SIDs needs to be harmonised.
>
> draft-ietf-spring-segment-routing has "IGP-Adjacency Segment" and
>
> "Adj-SID"
>
> This document has:
>
> adjacency SID (2.5.1)
>
> Adj-SID (2.7.3)
>
> adj-SID (2.7.3)
>
> IGP-adjacency-SID (2.8)
>
> IGP-Adj-SID (2.11.1)
>
> IGP adj-SID (2.11.2)
>
> ---
>
> Some of the section names are overly long and can be cut down without
>
> risking much. This helps with layout and readability. Just a suggestion,
>
> but...
>
> OLD
>
> 2.1. Supporting Multiple Forwarding Behaviors for the Same Prefix
>
> 2.8. MPLS Label downloaded to FIB corresponding to Global and Local SIDs
>
> 2.10.1. Forwarding Behavior for PUSH and CONTINUE Operation for Global 
> SIDs
>
> 2.10.2. Forwarding Behavior for NEXT Operation for Global SIDs
>
> 2.11.1. Forwarding Behavior Corresponding to PUSH Operation on Local SIDs
>
> 2.11.2. Forwarding Behavior Corresponding to CONTINUE Operation for 
> Local SIDs
>
> NEW
>
> 2.1. Multiple Forwarding Behaviors for the Same Prefix
>
> 2.8. MPLS Label Downloaded to FIB for Global and Local SIDs
>
> 2.10.1. Forwarding for PUSH and CONTINUE of Global SIDs
>
> 2.10.2. Forwarding for NEXT Operation for Global SIDs
>
> 2.11.1. Forwarding for PUSH Operation on Local SIDs
>
> 2.11.2. Forwarding for CONTINUE Operation for Local SIDs
>
> ---
>
> For some reason the definite article is missing before a lot of
>
> instances of "FIB". For example, in 2.8...
>
> The label corresponding to the global SID "Si" represented by the
>
> global index "I" downloaded to FIB is used to match packets whose
>
> ---
>
> 2.10
>
> OLD
>
> This section specifies forwarding behavior, including the outgoing
>
> label(s) calculations corresponding to a global SID when applying
>
> PUSH, CONTINUE, and NEXT operations in the MPLS forwarding plane.
>
> This document covers the calculation of outgoing label for the top
>
> label only. The case where outgoing label is not the top label and is
>
> part of a stack of labels that instantiates a routing policy or a
>
> traffic engineering tunnel is covered in other documents such as
>
> [I.D.filsfils-spring-segment-routing-policy].
>
> NEW
>
> This section specifies forwarding behavior, including the calculation
>
> of outgoing labels, that corresponds to a global SID when applying
>
> PUSH, CONTINUE, and NEXT operations in the MPLS forwarding plane.
>
> This document covers the calculation of the outgoing label for the
>
> top label only. The case where the outgoing label is not the top
>
> label and is part of a stack of labels that instantiates a routing
>
> policy or a traffic engineering tunnel is covered in other documents
>
> such as [I.D.filsfils-spring-segment-routing-policy].
>
> ---
>
> 2.10.1
>
> s/{RFC3031]/[RFC3031]/
>
> ---
>
> 2.10.2 has
>
> oApply the instruction associated with the incoming label prior to
>
> popping
>
> This is a little ambiguous. Might be read that the instruction should be
>
> applied prior to popping. The text that follows des clarify, but perhaps
>
> rewrite as...
>
> oApply the instruction associated with the incoming label that has
>
> been popped
>
> ---
>
> In order that ECMP descriptions work in the examples, Section 3 just
>
> needs a quick comment like.
>
> All links in this example have the same IGP metric.
>
> ---
>
> While it is largely OK to defer the discussion of manageability in
>
> Section 5 to draft-ietf-spring-segment-routing, it would make sense
>
> to make explicit reference to RFC 8287 because that is the key document
>
> that means no further OAM discussion is needed in this document.
>
> Probably just copy in the following paragraph
>
> SR OAM use cases for the MPLS data plane are defined in
>
> [I-D.ietf-spring-oam-usecase].SR OAM procedures for the MPLS data
>
> plane are defined in [RFC8287].
>
> ---
>
> 8.
>
> Possibly Himanshu would prefer to be named as "Himanshu Shah".
>
> *From:*spring [mailto:spring-bounces@ietf.org] *On Behalf Of 
> *bruno.decraene@orange.com
> *Sent:* 24 May 2018 18:14
> *To:* SPRING WG List
> *Cc:* draft-ietf-spring-segment-routing-mpls@ietf.org
> *Subject:* [spring] WG Last Call for 
> draft-ietf-spring-segment-routing-mpls-13
>
> Hello Working Group,
> This email starts a Working Group Last Call on 
> draft-ietf-spring-segment-routing-mpls-13 [1] which is considered 
> mature and ready for a final working group review.
> Please read this document if you haven't read the most recent version 
> yet, and send your comments to the list, no later than *June 08*.
> As a reminder, this document had already passed a WGLC more than a 
> year ago on version -06 [2], had been sent to the AD but then returned 
> to the WG.
> Since then, the document has significantly changed, so please read it 
> again. In particular, it now includes the resolution in case of 
> incoming label collision. Hence it killed 
> draft-ietf-spring-conflict-resolution.
> Both co-chairs co-author this document, hence:
> - Shraddha has agreed to be the document shepherd.. Thank you Shraddha.
> - Martin, our AD, has agreed to evaluate the WG consensus.
> Thank you,
> Bruno, Rob
> [1] https://tools.ietf.org/html/draft-ietf-spring-segment-routing-mpls-13
> [2] 
> https://mailarchive.ietf.org/arch/msg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y
> _________________________________________________________________________________________________________________________
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    <p>Thanks a lot for the thorough review</p>
    <p>I will take care of the comments in next version and I reply to
      this email explaining how they were addressed<br>
    </p>
    <p><br>
    </p>
    <p>Ahmed<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 5/25/18 2:22 AM, Adrian Farrel
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:00e601d3f409$f3b5b050$db2110f0$@olddog.co.uk">
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            New Roman&quot;;color:#1F497D">again.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">However, we do need to clean
            it up first. Hopefully this won't be a<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">lot of effort for the editors
            as nearly all I found were editorial <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">nits.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">As a side comment, it isn't a
            success that section 2.5 is so large. <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Full one quarter of the
            document is dedicated to the edge case of<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">collision avoidance. That
            said, I don't have a better solution.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Thanks for the work.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Adrian<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">====<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">idnits isn't as clean as it
            could be. In particular:<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">- 2.5.2.1 uses IP address
            1.1.1.1 and should pick one from RFC 6890.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">- Missing normative reference
            for RFC 8174<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">-
            [I-D.ietf-idr-segment-routing-te-policy] is not used<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">-
            [I-D.ietf-ospf-ospfv3-segment-routing-extensions] and<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>[I-D.ietf-ospf-segment-routing-extensions]
            have spurious spaces in<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>the filenames<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">You'll need to move the
            "Requirements Language" to be Section 1.1.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Section 2<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">s/link State IGPs/link state
            IGPs/<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">s/Segment ID (SIDs)/Segment
            IDs (SIDs)/<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">You use SRGB in 2.2 before
            you expand it in 2.3<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.2<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"> <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"></span>o<span
              style="mso-spacerun:yes"> </span>The label value MUST be
            unique within the router on which the MCC<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>is running. i.e.
            the label MUST only be used to represent the SID.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">I don't think you mean this.
            You have written that the label value has <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">be unique which means that
            only one label value can be assigned to a<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">SID.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">I think what you mean is that
            <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>o<span
              style="mso-spacerun:yes"> </span>The label value MUST
            NOT be used for any other purpose on the <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"></span>router on which the
            MCC is running. I.e. the label MUST NOT be <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"></span>used to represent
            more than one SID or for any other forwarding<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>purpose on the
            router.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.2<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Unusual to have a normative
            reference to an IANA URL as you have for<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">[reserved-MPLS]. Besides, the
            URL you give is 404.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">You would do better to
            reference RFC 7274.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">You might also fix the
            language and terminology, thus...<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">OLD<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>o<span
              style="mso-spacerun:yes"> </span>The label value MUST
            NOT be identical to or within the range of<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>any reserved label
            value or range [reserved-MPLS], respectively.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">NEW<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>o<span
              style="mso-spacerun:yes"> </span>The label value MUST
            NOT come from the range of special purpose<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>labels [RFC7274].<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.3 ditto<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">OLD<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>o<span
              style="mso-spacerun:yes"> </span>Every range in the list
            of ranges specifying the SRGB MUST NOT<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>cover or overlap
            with a reserved label value or range [reserved-<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>MPLS],
            respectively.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">NEW<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>o<span
              style="mso-spacerun:yes"> </span>Every range in the list
            of ranges specifying the SRGB MUST NOT<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>cover or overlap
            with the range of special purpose labels <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"></span>[RFC7274].<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.3<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>o<span
              style="mso-spacerun:yes"> </span>If the SRGB of a node
            does not conform to the structure specified<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>in this section or
            to the previous two rules, then this SRGB is<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>completely ignored
            and the node is treated as if it does not have<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>an SRGB.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Can we fix this passive
            voice? Presume the intention is that the <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">advertisement of this SRGB is
            ignored by any routing protocol speakers<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">that receive it.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Two points of clarification I
            think we should add:<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">1. The *whole* SRGB is
            ignored, not simply the range of labels in a set<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>of ranges that is at
            fault<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2. The term "ignore" in this
            case means that no SR action is taken, but<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>the SRGB advertisement
            continues to be propagated within the routing<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>protocol.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.3 (bottom of page 5)<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">s/reserved label/special
            purpose label/<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.3<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">s/contiguous range of
            label/contiguous range of labels/<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.5<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">s/(e.g.,over/(e.g., over/<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">s/map to the same
            incoming/maps to the same incoming/<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">s/FECk} maps to the
            same/FECk} map to the same/<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">s/non-zero algo/non-zero
            algorithm/<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.5.1<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">The plural of FEC is FECs not
            FEC's<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.5.1<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>2. if more than one
            competing FEC remains after step 1, sort them and<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>select the smallest
            numerical FEC value<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Is sorting required? Can we
            just have...<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>2. if more than one
            competing FEC remains after step 1, select the <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"></span>smallest numerical
            FEC value<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.5.1<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">An implementation may choose
            to implement additional<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">s/may/MAY/<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.5.2<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">s/THEN/then/<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.7<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">s/plan./plane./<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Terminology for adjacency
            SIDs needs to be harmonised.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">draft-ietf-spring-segment-routing
            has "IGP-Adjacency Segment" and <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">"Adj-SID"<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">This document has:<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">adjacency SID (2.5.1)<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Adj-SID (2.7.3)<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">adj-SID (2.7.3)<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">IGP-adjacency-SID (2.8)<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">IGP-Adj-SID (2.11.1)<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">IGP adj-SID (2.11.2)<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Some of the section names are
            overly long and can be cut down without<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">risking much. This helps with
            layout and readability. Just a suggestion,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">but...<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">OLD<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.1. Supporting Multiple
            Forwarding Behaviors for the Same Prefix<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.8. MPLS Label downloaded to
            FIB corresponding to Global and Local SIDs<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.10.1. Forwarding Behavior
            for PUSH and CONTINUE Operation for Global SIDs<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.10.2. Forwarding Behavior
            for NEXT Operation for Global SIDs<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.11.1. Forwarding Behavior
            Corresponding to PUSH Operation on Local SIDs<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.11.2. Forwarding Behavior
            Corresponding to CONTINUE Operation for Local SIDs<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">NEW<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.1. Multiple Forwarding
            Behaviors for the Same Prefix<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.8. MPLS Label Downloaded to
            FIB for Global and Local SIDs<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.10.1. Forwarding for PUSH
            and CONTINUE of Global SIDs<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.10.2. Forwarding for NEXT
            Operation for Global SIDs<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.11.1. Forwarding for PUSH
            Operation on Local SIDs<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.11.2. Forwarding for
            CONTINUE Operation for Local SIDs<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">For some reason the definite
            article is missing before a lot of<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">instances of "FIB". For
            example, in 2.8...<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>The label
            corresponding to the global SID "Si" represented by the<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>global index "I"
            downloaded to FIB is used to match packets whose<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.10<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">OLD<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>This section specifies
            forwarding behavior, including the outgoing<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>label(s) calculations
            corresponding to a global SID when applying<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>PUSH, CONTINUE, and
            NEXT operations in the MPLS forwarding plane.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>This document covers
            the calculation of outgoing label for the top<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>label only. The case
            where outgoing label is not the top label and is<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>part of a stack of
            labels that instantiates a routing policy or a<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>traffic engineering
            tunnel is covered in other documents such as<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>[I.D.filsfils-spring-segment-routing-policy].<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">NEW<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>This section specifies
            forwarding behavior, including the calculation<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>of outgoing labels,
            that corresponds to a global SID when applying<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>PUSH, CONTINUE, and
            NEXT operations in the MPLS forwarding plane.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>This document covers
            the calculation of the outgoing label for the <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"></span>top label only. The
            case where the outgoing label is not the top <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"></span>label and is part of a
            stack of labels that instantiates a routing<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>policy or a traffic
            engineering tunnel is covered in other documents<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>such as
            [I.D.filsfils-spring-segment-routing-policy].<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.10.1<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">s/{RFC3031]/[RFC3031]/<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">2.10.2 has<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>o<span
              style="mso-spacerun:yes"> </span>Apply the instruction
            associated with the incoming label prior to<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>popping<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">This is a little ambiguous.
            Might be read that the instruction should be<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">applied prior to popping. The
            text that follows des clarify, but perhaps<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">rewrite as...<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>o<span
              style="mso-spacerun:yes"> </span>Apply the instruction
            associated with the incoming label that has<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>been popped<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">In order that ECMP
            descriptions work in the examples, Section 3 just<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">needs a quick comment like.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>All links in this
            example have the same IGP metric.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">While it is largely OK to
            defer the discussion of manageability in <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Section 5 to
            draft-ietf-spring-segment-routing, it would make sense<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">to make explicit reference to
            RFC 8287 because that is the key document<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">that means no further OAM
            discussion is needed in this document.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Probably just copy in the
            following paragraph<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>SR OAM use cases for
            the MPLS data plane are defined in<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>[I-D.ietf-spring-oam-usecase].<span
              style="mso-spacerun:yes"> </span>SR OAM procedures for
            the MPLS data<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><span
              style="mso-spacerun:yes"> </span>plane are defined in
            [RFC8287].<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">---<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">8.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D">Possibly Himanshu would
            prefer to be named as "Himanshu Shah".<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times
            New Roman&quot;;color:#1F497D"><o:p></o:p></span></p>
        <div style="border:none;border-left:solid blue 1.5pt;padding:0cm
          0cm 0cm 4.0pt">
          <div>
            <div style="border:none;border-top:solid #B5C4DF
              1.0pt;padding:3.0pt 0cm 0cm 0cm">
              <p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-fareast-font-family:&quot;Times
                    New
                    Roman&quot;;mso-ansi-language:EN-US;mso-fareast-language:EN-GB"
                    lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-fareast-font-family:&quot;Times
                  New
                  Roman&quot;;mso-ansi-language:EN-US;mso-fareast-language:EN-GB"
                  lang="EN-US"> spring [<a class="moz-txt-link-freetext" href="mailto:spring-bounces@ietf.org">mailto:spring-bounces@ietf.org</a>]
                  <b>On Behalf Of </b><a class="moz-txt-link-abbreviated" href="mailto:bruno.decraene@orange.com">bruno.decraene@orange.com</a><br>
                  <b>Sent:</b> 24 May 2018 18:14<br>
                  <b>To:</b> SPRING WG List<br>
                  <b>Cc:</b>
                  <a class="moz-txt-link-abbreviated" href="mailto:draft-ietf-spring-segment-routing-mpls@ietf.org">draft-ietf-spring-segment-routing-mpls@ietf.org</a><br>
                  <b>Subject:</b> [spring] WG Last Call for
                  draft-ietf-spring-segment-routing-mpls-13<o:p></o:p></span></p>
            </div>
          </div>
          <p class="MsoNormal"><o:p></o:p></p>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US">Hello Working Group,<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US"> <o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US">This email starts a Working Group Last Call on draft-ietf-spring-segment-routing-mpls-13 [1] which is considered mature and ready for a final working group review.<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US"> <o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US">Please read this document if you haven't read the most recent version yet, and send your comments to the list, no later than *June 08*.<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US"><o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US">As a reminder, this document had already passed a WGLC more than a year ago on version -06 [2], had been sent to the AD but then returned to the WG.<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US">Since then, the document has significantly changed, so please read it again. In particular, it now includes the resolution in case of incoming label collision. Hence it killed draft-ietf-spring-conflict-resolution.<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US"><o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US">Both co-chairs co-author this document, hence:<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US">- Shraddha has agreed to be the document shepherd.. Thank you Shraddha.<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US">- Martin, our AD, has agreed to evaluate the WG consensus.<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US"> <o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US">Thank you,<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US">Bruno, Rob<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US"><o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US">[1] <a href="https://tools.ietf.org/html/draft-ietf-spring-segment-routing-mpls-13" moz-do-not-send="true">https://tools.ietf.org/html/draft-ietf-spring-segment-routing-mpls-13</a><o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:EN-US" lang="EN-US">[2] <a href="https://mailarchive.ietf.org/arch/msg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y" moz-do-not-send="true">https://mailarchive.ietf.org/arch/msg/spring/STiYsQJWuVXA1C9hK4BiUnyMu7Y</a><o:p></o:p></span></pre>
          <pre><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;mso-ansi-language:EN-US" lang="EN-US"><o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:FR" lang="FR">_________________________________________________________________________________________________________________________<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:FR" lang="FR"><o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:FR" lang="FR">Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc<o:p></o:p></span></pre>
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          <pre><span style="mso-ansi-language:FR" lang="FR">a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration,<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:FR" lang="FR">Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci.<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:FR" lang="FR"><o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:FR" lang="FR">This message and its attachments may contain confidential or privileged information that may be protected by law;<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:FR" lang="FR">they should not be distributed, used or copied without authorisation.<o:p></o:p></span></pre>
          <pre><span style="mso-ansi-language:FR" lang="FR">If you have received this email in error, please notify the sender and delete this message and its attachments.<o:p></o:p></span></pre>
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          <pre><span style="mso-ansi-language:FR" lang="FR">Thank you.<o:p></o:p></span></pre>
        </div>
      </div>
    </blockquote>
    <br>
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Gaurav:

Hi!

I noticed you posted an update to this document.  Thanks!

In it you are now listed as an Author (and also still as a Contributor).
Please indicate whether you are aware of any relevant IPR and if so,
whether it has been disclosed.  Please cc the WG on your reply.

Thanks!

Alvaro.

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<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style>=
</head><body style=3D"word-wrap:break-word"><div id=3D"bloop_customfont" st=
yle=3D"font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);mar=
gin:0px;line-height:auto">Gaurav:</div><div id=3D"bloop_customfont" style=
=3D"font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin=
:0px;line-height:auto"><br></div><div id=3D"bloop_customfont" style=3D"font=
-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;lin=
e-height:auto">Hi!</div><div id=3D"bloop_customfont" style=3D"font-family:H=
elvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:=
auto"><br></div><div id=3D"bloop_customfont" style=3D"font-family:Helvetica=
,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">I =
noticed you posted an update to this document.=C2=A0 Thanks!</div><div id=
=3D"bloop_customfont" style=3D"font-family:Helvetica,Arial;font-size:13px;c=
olor:rgba(0,0,0,1.0);margin:0px;line-height:auto"><br></div><div id=3D"bloo=
p_customfont" style=3D"font-family:Helvetica,Arial;font-size:13px;color:rgb=
a(0,0,0,1.0);margin:0px;line-height:auto">In it you are now listed as an Au=
thor (and also still as a Contributor).=C2=A0 Please indicate whether you a=
re aware of any relevant IPR and if so, whether it has been disclosed.=C2=
=A0 Please cc the WG on your reply.</div><div id=3D"bloop_customfont" style=
=3D"font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin=
:0px;line-height:auto"><br></div><div id=3D"bloop_customfont" style=3D"font=
-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;lin=
e-height:auto">Thanks!</div><div id=3D"bloop_customfont" style=3D"font-fami=
ly:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-hei=
ght:auto"><br></div><div id=3D"bloop_customfont" style=3D"font-family:Helve=
tica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto=
">Alvaro.</div><br><div id=3D"bloop_sign_1527709580460850944" class=3D"bloo=
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--00000000000008cea8056d71bcbc
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Martin:

Hi!  How are you?

Gaurav just posted a revision.  Please take a look and let us know if the
changes address your concerns or not.

https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-spring-segment-routing-msdc-=
09

Thanks!!

Alvaro.

On May 25, 2018 at 12:08:46 PM, Gaurav Dawra (gdawra.ietf@gmail.com) wrote:

Hi Martin,

Thanks for review. I will post the new version. Hopefully, it will address
all your comments and we can close this review.

Any updates on below response?

Cheers,

Gaurav

Sent from my iPhone

On May 23, 2018, at 4:17 AM, Gaurav Dawra <gdawra.ietf@gmail.com> wrote:

Hi Martin,

Thanks for the review. Any further comments here ? I will post the new
version soon.

Cheers,

Gaurav

Sent from my iPhone

On May 16, 2018, at 7:44 PM, Gaurav Dawra <gdawra.ietf@gmail.com> wrote:

Hi Martin,

Apologies from my end we had few internal authors conversations on the
points you have raised.

Please find below my response. I will be happy to discuss further, if
needed.

<Gaurav> inline...

On Apr 9, 2018, at 7:58 AM, Martin Stiemerling <mls.ietf@gmail.com> wrote:

Hi Gaurav,

This got lost on my end, sorry for this. The filter just moved these
messages out of my sight... :-/

Am 15.02.18 um 05:47 schrieb Gaurav Dawra:

Hey Martin,
Sorry for late reply. Please see some comments inline[Gaurav]

On Jan 9, 2018, at 2:25 PM, Martin Stiemerling <mls.ietf@gmail.com <
mailto:mls.ietf@gmail.com <mls.ietf@gmail.com>>> wrote:

Hi all,

I've reviewed this document as part of the transport area review team's
ongoing effort to review key IETF documents. These comments were written
primarily for the transport area directors, but are copied to the
document's authors for their information and to allow them to address any
issues raised. When done at the time of IETF Last Call, the authors should
consider this review together with any other last-call comments they
receive. Please always CC tsv-art@=E2=80=A6 if you reply to or forward this=
 review.

Summary:
This draft has serious issues in Section 7.1, 7.2 and in one part of
Section3, described in the review, and needs to be rethought. The other
sections are good AFAIK.


Technicals:
The overall draft looks ok, but the three points below look strange and
need a fix before publication IMHO:

Both Sections, 7.1. and 7.2., are describing ideas, but not well proven
funcationality and not even safe to use functionality. Both are some sort
discussing that different paths in the network could be used by the end
host traffic. This sounds pretty much like the Path Aware Networking
Proposed Research Group (https://irtf.org/panrg) and hints to the fact that
there is no commonly understand and accepted engineering solution in this
space.

Section 7.1:
[KANDULA04] is a really old reference that hasn't been followed up in
recent times and even worse there is no evidence that this is going to work
good enough or stable enough under real Internet traffic. Additionally, it
is more than unclear how any modern TCP implementation will react to this

[Gaurav] Will get back on this.


I will reply to the other email dicussing this.

<Gaurav> I have replied to other thread.



Section 7.2:
This section describes an idea without detailing too much about any further
aspects. Further it changes the commonly accepted notion of what an end
host can do with the network. At best this would require a good definition
of what an end host in your setting is, e.g., a highly modified piece of
(at least) software that usually not found in OS availble on the market
(yet?)
Further communicating instantaneous path characteristics to a central point
is potentially a bad idea, as the data is already outdated when reported by
any node.

[Gaurav] I believe Authors are trying to highlight that Host which is
defined in (https://tools.ietf.org/html/draft-ietf-spring-segment-routing-1=
5)
can influence the traffic based on the Calculations locally or jointly with
the controller. Implementations can decide how much Centralized -vs-
localized control is allowed at Host based on performance data collection.


Performance data collection (monitoring?) isn't crucial when it comes to
timely (actually real-time) reaction. However, this section isn't just
about performance data collection as it is about "Performance-aware
routing" this seems to try to interact in real-time with the network
behavior of TCP. This isn't even close to acceptable.

I would be ok to say that it is useful to collect performance data for
offline analysis and improvement of the data network. However, this is at
completely different magnitues of time scales.

I would recommend to remove the TCP part from this section entirely.

<Gaurav>Ack, will update in next rev:

Section will read like this:

;


*   Knowing the path associated with flows/packets, the end host may*

*   deduce certain characteristics of the path on its own, and*

*   additionally use the information supplied with path information*

*   pushed from the controller or received via pull request.  The host*

*   may further share its path observations with the centralized agent,*

*   so that the latter may keep up-to-date network health map to assist*

*   other hosts with this information.*

 *   For example, an application A.1 at HostA may pin a flow destined*

*   to HostZ via Spine node Node5 using label stack {16005, 16011}. The*

*   application A.1 may collect information on packet loss, deduced from*

*   Other offline mechanisms.  [There are some pingMesh mechanisms which *

*   Can be used here]*

 *    Through these mechanisms information to a centralized agent, e.g.*

*   after a flow completes, or periodically for longer lived flows.*

*   Next, using both local and/or global performance data, application*

*   A.1 as well as other applications sharing the same resources in the*

*   DC fabric may pick up the best path for the new flow, or update an*

*   existing path (e.g.: when informed of congestion on an existing*

*   path).*


;




Section 3, 3rd bullet point:
It is the foundation of TCP that the network is regarded as a black box and
that you infer from the transmission of packets what the current state of
the network path is. Inferring network path metrics (you mention SRTT, MSS,
CWND ) is a bad idea, as this would required that all paths exhibit this
and if not what is going to happen?
It could be an interesting research field to change many points in TCP's
behavior, but this once again points to the fact that this not the IETF
works but IRTF or elsewhere.

[Gaurav] Martin, Authors are trying to suggest that TCP is rightly treating
Network as Black Box. Authors are implying per path performance metrics as
not cached. Is there some change in text you are suggesting?



I would recommend to remove the 3rd bullet point completey. TCP isn't the
place to remember "good" or "bad" paths. This is something the network
could decide, e.g., rerouting TCP flows within the network or changing the
forwarding path in the network for particular flows (if it is not routed).


<Gaurav> Ack, after discussion, we will remove the Section 3 - 3rd bullet
point. Will update in next rev - coming shortly.


Kind regards,

 Martin

--00000000000008cea8056d71bcbc
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<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style>=
</head><body style=3D"word-wrap:break-word"><div id=3D"bloop_customfont" st=
yle=3D"font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);mar=
gin:0px;line-height:auto">Martin:</div><div id=3D"bloop_customfont" style=
=3D"font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin=
:0px;line-height:auto"><br></div><div id=3D"bloop_customfont" style=3D"font=
-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;lin=
e-height:auto">Hi!=C2=A0 How are you?</div><div id=3D"bloop_customfont" sty=
le=3D"font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);marg=
in:0px;line-height:auto"><br></div><div id=3D"bloop_customfont" style=3D"fo=
nt-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;l=
ine-height:auto">Gaurav just posted a revision.=C2=A0 Please take a look an=
d let us know if the changes address your concerns or not.</div><div id=3D"=
bloop_customfont" style=3D"font-family:Helvetica,Arial;font-size:13px;color=
:rgba(0,0,0,1.0);margin:0px;line-height:auto"><br></div><div id=3D"bloop_cu=
stomfont" style=3D"margin:0px"><a href=3D"https://www.ietf.org/rfcdiff?url2=
=3Ddraft-ietf-spring-segment-routing-msdc-09">https://www.ietf.org/rfcdiff?=
url2=3Ddraft-ietf-spring-segment-routing-msdc-09</a>=C2=A0</div><div id=3D"=
bloop_customfont" style=3D"margin:0px"><br></div><div id=3D"bloop_customfon=
t" style=3D"margin:0px">Thanks!!</div><div id=3D"bloop_customfont" style=3D=
"margin:0px"><br></div><div id=3D"bloop_customfont" style=3D"margin:0px">Al=
varo.</div> <br><p class=3D"airmail_on">On May 25, 2018 at 12:08:46 PM, Gau=
rav Dawra (<a href=3D"mailto:gdawra.ietf@gmail.com">gdawra.ietf@gmail.com</=
a>) wrote:</p> <blockquote type=3D"cite" class=3D"clean_bq"><span><div dir=
=3D"auto"><div></div><div>



<title></title>


Hi Martin,
<div><br></div>
<div>Thanks for review. I will post the new version. Hopefully, it
will address all your comments and we can close this review.</div>
<div><br></div>
<div>Any updates on below response?</div>
<div><br></div>
<div>Cheers,</div>
<div><br></div>
<div>Gaurav<br>
<div><br>
<div id=3D"AppleMailSignature">Sent from my iPhone</div>
<div><br>
On May 23, 2018, at 4:17 AM, Gaurav Dawra &lt;<a href=3D"mailto:gdawra.ietf=
@gmail.com">gdawra.ietf@gmail.com</a>&gt;
wrote:<br>
<br></div>
<blockquote type=3D"cite">
<div>
Hi Martin,
<div><br></div>
<div>Thanks for the review. Any further comments here ? I will post
the new version soon.</div>
<div><br></div>
<div>Cheers,</div>
<div><br></div>
<div>Gaurav<br>
<br>
<div id=3D"AppleMailSignature">Sent from my iPhone</div>
<div><br>
On May 16, 2018, at 7:44 PM, Gaurav Dawra &lt;<a href=3D"mailto:gdawra.ietf=
@gmail.com">gdawra.ietf@gmail.com</a>&gt;
wrote:<br>
<br></div>
<blockquote type=3D"cite">
<div>

<div style=3D"word-wrap:break-word;line-break:after-white-space" dir=3D"aut=
o" class=3D""><font size=3D"4" class=3D"">Hi Martin,</font>
<div class=3D""><font size=3D"4" class=3D""><br class=3D""></font></div>
<div class=3D""><font size=3D"4" class=3D"">Apologies from my end we had
few internal authors conversations on the points you have
raised.</font></div>
<div class=3D""><font size=3D"4" class=3D""><br class=3D""></font></div>
<div class=3D""><font size=3D"4" class=3D"">Please find below my
response. I will be happy to discuss further, if
needed.</font></div>
<div class=3D""><font size=3D"4" class=3D""><br class=3D""></font></div>
<div class=3D""><font size=3D"4" class=3D"">&lt;Gaurav&gt;
inline...<br class=3D""></font>
<div><font size=3D"4" class=3D""><br class=3D""></font>
<blockquote type=3D"cite" class=3D"">
<div class=3D""><font size=3D"4" class=3D"">On Apr 9, 2018, at 7:58 AM,
Martin Stiemerling &lt;<a href=3D"mailto:mls.ietf@gmail.com" class=3D"">mls=
.ietf@gmail.com</a>&gt; wrote:</font></div>
<font size=3D"4" class=3D""><br class=3D"Apple-interchange-newline"></font>
<div class=3D"">
<div class=3D""><font size=3D"4" class=3D"">Hi Gaurav,<br class=3D"">
<br class=3D"">
This got lost on my end, sorry for this. The filter just moved
these messages out of my sight... :-/<br class=3D"">
<br class=3D"">
Am 15.02.18 um 05:47 schrieb Gaurav Dawra:<br class=3D""></font>
<blockquote type=3D"cite" class=3D""><font size=3D"4" class=3D"">Hey
Martin,<br class=3D"">
Sorry for late reply. Please see some comments
inline[Gaurav]<br class=3D""></font>
<blockquote type=3D"cite" class=3D""><font size=3D"4" class=3D"">On Jan 9,
2018, at 2:25 PM, Martin Stiemerling &lt;<a href=3D"mailto:mls.ietf@gmail.c=
om" class=3D"">mls.ietf@gmail.com</a>
&lt;<a href=3D"mailto:mls.ietf@gmail.com" class=3D"">mailto:mls.ietf@gmail.=
com</a>&gt;&gt; wrote:<br class=3D"">
<br class=3D"">
Hi all,<br class=3D"">
<br class=3D"">
I&#39;ve reviewed this document as part of the transport area review
team&#39;s ongoing effort to review key IETF documents. These comments
were written primarily for the transport area directors, but are
copied to the document&#39;s authors for their information and to allow
them to address any issues raised. When done at the time of IETF
Last Call, the authors should consider this review together with
any other last-call comments they receive. Please always CC
tsv-art@=E2=80=A6 if you reply to or forward this review.<br class=3D"">
<br class=3D"">
Summary:<br class=3D"">
This draft has serious issues in Section 7.1, 7.2 and in one part
of Section3, described in the review, and needs to be rethought.
The other sections are good AFAIK.<br class=3D"">
<br class=3D"">
<br class=3D"">
Technicals:<br class=3D"">
The overall draft looks ok, but the three points below look strange
and need a fix before publication IMHO:<br class=3D"">
<br class=3D"">
Both Sections, 7.1. and 7.2., are describing ideas, but not well
proven funcationality and not even safe to use functionality. Both
are some sort discussing that different paths in the network could
be used by the end host traffic. This sounds pretty much like the
Path Aware Networking Proposed Research Group (<a href=3D"https://irtf.org/=
panrg" class=3D"">https://irtf.org/panrg</a>) and
hints to the fact that there is no commonly understand and accepted
engineering solution in this space.<br class=3D"">
<br class=3D"">
Section 7.1:<br class=3D"">
[KANDULA04] is a really old reference that hasn&#39;t been followed up
in recent times and even worse there is no evidence that this is
going to work good enough or stable enough under real Internet
traffic. Additionally, it is more than unclear how any modern TCP
implementation will react to this<br class=3D""></font></blockquote>
<font size=3D"4" class=3D"">[Gaurav] Will get back on this.<br class=3D""><=
/font></blockquote>
<font size=3D"4" class=3D""><br class=3D"">
I will reply to the other email dicussing this.<br class=3D""></font></div>
</div>
</blockquote>
<font size=3D"4" class=3D"">&lt;Gaurav&gt; I have replied to other
thread.<br class=3D""></font>
<blockquote type=3D"cite" class=3D"">
<div class=3D"">
<div class=3D""><font size=3D"4" class=3D""><br class=3D""></font>
<blockquote type=3D"cite" class=3D"">
<blockquote type=3D"cite" class=3D""><font size=3D"4" class=3D""><br class=
=3D"">
Section 7.2:<br class=3D"">
This section describes an idea without detailing too much about any
further aspects. Further it changes the commonly accepted notion of
what an end host can do with the network. At best this would
require a good definition of what an end host in your setting is,
e.g., a highly modified piece of (at least) software that usually
not found in OS availble on the market (yet?)<br class=3D"">
Further communicating instantaneous path characteristics to a
central point is potentially a bad idea, as the data is already
outdated when reported by any node.<br class=3D""></font></blockquote>
<font size=3D"4" class=3D"">[Gaurav] I believe Authors are trying to
highlight that Host which is defined in (<a href=3D"https://tools.ietf.org/=
html/draft-ietf-spring-segment-routing-15" class=3D"">https://tools.ietf.or=
g/html/draft-ietf-spring-segment-routing-15</a>)
can influence the traffic based on the Calculations locally or
jointly with the controller. Implementations can decide how much
Centralized -vs- localized control is allowed at Host based on
performance data collection.<br class=3D""></font></blockquote>
<font size=3D"4" class=3D""><br class=3D"">
Performance data collection (monitoring?) isn&#39;t crucial when it
comes to timely (actually real-time) reaction. However, this
section isn&#39;t just about performance data collection as it is about
&quot;Performance-aware routing&quot; this seems to try to interact in
real-time with the network behavior of TCP. This isn&#39;t even close
to acceptable.<br class=3D"">
<br class=3D"">
I would be ok to say that it is useful to collect performance data
for offline analysis and improvement of the data network. However,
this is at completely different magnitues of time scales.<br class=3D"">
<br class=3D"">
I would recommend to remove the TCP part from this section
entirely.<br class=3D""></font></div>
</div>
</blockquote>
<div><font size=3D"4" class=3D"">&lt;Gaurav&gt;Ack, will update in next
rev:</font></div>
<div><font size=3D"4" class=3D""><br class=3D""></font></div>
<div><font size=3D"4" class=3D"">Section will read like
this:</font></div>
<div><font size=3D"4" class=3D""><br class=3D""></font></div>
<div>
<div class=3D"">
<div style=3D"margin:0cm 0cm 0.0001pt" class=3D""><font size=3D"4" class=3D=
"">;</font></div>
</div>
<div class=3D"">
<div style=3D"margin:0cm 0cm 0.0001pt" class=3D""><font size=3D"4" class=3D=
"">=C2=A0</font></div>
</div>
<div class=3D"">
<pre style=3D"margin:0cm 0cm 0.0001pt;break-before:page;font-variant-ligatu=
res:normal" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-s=
ize:18px" class=3D"">   Knowing the path associated with flows/packets, the=
 end host may</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   deduce certain characte=
ristics of the path on its own, and</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   additionally use the in=
formation supplied with path information</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   pushed from the control=
ler or received via pull request.  The host</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   may further share its p=
ath observations with the centralized agent,</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   so that the latter may =
keep up-to-date network health map to assist</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   other hosts with this i=
nformation.</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D""> </font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   For example, an applica=
tion A.1 at HostA may pin a flow destined</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   to HostZ via Spine node=
 Node5 using label stack {16005, 16011}. The</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><font face=3D"Georgia" si=
ze=3D"4" class=3D""><i class=3D"">   application A.1 may collect informatio=
n on packet loss, deduced from</i></font></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt;break-before:page;font-variant-ligatu=
res:normal" class=3D""><font face=3D"Georgia" size=3D"4" class=3D""><i clas=
s=3D"">   Other offline mechanisms.  [There are some pingMesh mechanisms wh=
ich </i></font></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt;break-before:page;font-variant-ligatu=
res:normal" class=3D""><font face=3D"Georgia" size=3D"4" class=3D""><i clas=
s=3D"">   Can be used here]</i></font></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt;break-before:page;font-variant-ligatu=
res:normal" class=3D""><font face=3D"Georgia" style=3D"font-size:18px" clas=
s=3D""> </font></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt;break-before:page;font-variant-ligatu=
res:normal" class=3D""><i class=3D""><font face=3D"Georgia" style=3D"font-s=
ize:18px" class=3D"">    Through these mechanisms information to a centrali=
zed agent, e.g.</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   after a flow completes,=
 or periodically for longer lived flows.</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   Next, using both local =
and/or global performance data, application</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   A.1 as well as other ap=
plications sharing the same resources in the</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   DC fabric may pick up t=
he best path for the new flow, or update an</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   existing path (e.g.: wh=
en informed of congestion on an existing</font></i></pre>
<pre style=3D"margin:0cm 0cm 0.0001pt" class=3D""><i class=3D""><font face=
=3D"Georgia" style=3D"font-size:18px" class=3D"">   path).</font></i></pre>
<div class=3D"">
<div style=3D"margin:0cm 0cm 0.0001pt" class=3D""><font size=3D"4" class=3D=
"">=C2=A0</font></div>
</div>
<div class=3D"">
<div style=3D"margin:0cm 0cm 0.0001pt" class=3D""><font size=3D"4" class=3D=
"">;</font></div>
</div>
</div>
</div>
<div><font size=3D"4" class=3D""><br class=3D""></font></div>
<blockquote type=3D"cite" class=3D"">
<div class=3D"">
<div class=3D""><font size=3D"4" class=3D""><br class=3D"">
<br class=3D""></font>
<blockquote type=3D"cite" class=3D"">
<blockquote type=3D"cite" class=3D""><font size=3D"4" class=3D""><br class=
=3D"">
Section 3, 3rd bullet point:<br class=3D"">
It is the foundation of TCP that the network is regarded as a black
box and that you infer from the transmission of packets what the
current state of the network path is. Inferring network path
metrics (you mention SRTT, MSS, CWND ) is a bad idea, as this would
required that all paths exhibit this and if not what is going to
happen?<br class=3D"">
It could be an interesting research field to change many points in
TCP&#39;s behavior, but this once again points to the fact that this
not the IETF works but IRTF or elsewhere.<br class=3D""></font></blockquote=
>
<font size=3D"4" class=3D"">[Gaurav] Martin, Authors are trying to
suggest that TCP is rightly treating Network as Black Box. Authors
are implying per path performance metrics as not cached. Is there
some change in text you are suggesting?<br class=3D""></font></blockquote>
<font size=3D"4" class=3D""><br class=3D"">
<br class=3D"">
I would recommend to remove the 3rd bullet point completey. TCP
isn&#39;t the place to remember &quot;good&quot; or &quot;bad&quot; paths. =
This is
something the network could decide, e.g., rerouting TCP flows
within the network or changing the forwarding path in the network
for particular flows (if it is not routed).<br class=3D""></font></div>
</div>
</blockquote>
<div><font size=3D"4" class=3D""><br class=3D""></font></div>
<div><font size=3D"4" class=3D"">&lt;Gaurav&gt; Ack, after discussion,
we will remove the Section 3 - 3rd bullet point.=C2=A0Will update
in next rev - coming shortly.</font></div>
<font size=3D"4" class=3D""><br class=3D""></font>
<blockquote type=3D"cite" class=3D"">
<div class=3D"">
<div class=3D""><font size=3D"4" class=3D""><br class=3D"">
Kind regards,<br class=3D"">
<br class=3D"">
=C2=A0Martin<br class=3D"">
<br class=3D""></font></div>
</div>
</blockquote>
</div>
<br class=3D""></div>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>


</div></div></span></blockquote> <div id=3D"bloop_sign_1527710005581827072"=
 class=3D"bloop_sign"></div></body></html>

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I support this adoption.

cheers,
--satoru

> 2018/05/17 0:20=E3=80=81Rob Shakir <robjs@google.com>=E3=81=AE=E3=83=A1=E3=
=83=BC=E3=83=AB:
>=20
> Hi SPRING WG,
>=20
> This email initiates a two week call for working group adoption for =
draft-filsfils-spring-segment-routing-policy. Please indicate your =
support, or otherwise, for adopting this draft as a working group item =
by 30th May 2018. We are particularly interested in hearing from working =
group members that are not co-authors of this draft.
>=20
> As part of the discussions of adopting this draft into SPRING with the =
ADs and chairs of other WGs, there are a number of requests to the =
authors.
>=20
> 1. Please clarify in the text traffic steering with "SR policy" and =
its relationship to other traffic engineering functions. It seems to me =
that this work is generally describing how one selects and steers =
traffic into policies, rather than path calculation. Additional =
clarification of whether this is the case (or not), would be welcome to =
ensure that the relationship with other work is clear. We would ask the =
authors to consider whether sections 14.1-14.4 are required scope of =
this document.
>=20
> 2.. Consider what the core content of this document is, and how it can =
be make as concise and clear as possible. There are some specific =
suggestions that can be made here, but we would like to see this =
discussed with the working group.
>=20
> Additionally, there are currently 17 authors listed on this document. =
Please trim this to <=3D 5 front-page authors, utilising a =
"Contributors" section if required for the others.. An approach to =
achieving this would be to list ~2 editors as the front-page authors.
>=20
> In parallel to this adoption call, I will send an IPR call for this =
document. We will need all 17 authors to confirm their IPR position on =
this document.
>=20
> Thanks,
> Bruno & Rob.
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring


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From: "Bernier, Daniel" <daniel.bernier@bell.ca>
To: SPRING WG List <spring@ietf.org>
Thread-Topic: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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Date: Fri, 1 Jun 2018 01:48:58 +0000
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Subject: Re: [spring] Working Group Adoption Call for draft-filsfils-spring-segment-routing-policy
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