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From: Cociglio Mauro <mauro.cociglio@telecomitalia.it>
To: Tal Mizrahi <tal.mizrahi.phd@gmail.com>, IETF IPPM WG <ippm@ietf.org>, IPPM Chairs <ippm-chairs@ietf.org>, "draft-ietf-ippm-multipoint-alt-mark@ietf.org" <draft-ietf-ippm-multipoint-alt-mark@ietf.org>
Thread-Topic: IPR Poll for draft-ietf-ippm-multipoint-alt-mark-04
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Date: Mon, 3 Feb 2020 16:51:46 +0000
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Subject: [ippm] R: IPR Poll for draft-ietf-ippm-multipoint-alt-mark-04
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From nobody Mon Feb  3 20:46:23 2020
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Subject: [ippm] ACM SOSR 2020 Travel Grant
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SOSR 2020's organizing committee is pleased to invite you to apply for 
travel grants.

Deadline: February 18, 2020
Details: https://conferences.sigcomm.org/sosr/2020/travel_grant.html


From nobody Tue Feb  4 00:31:46 2020
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Thread-Topic: [ippm] I-D Action: draft-ietf-ippm-capacity-metric-method-00.txt
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Archived-At: <https://mailarchive.ietf.org/arch/msg/ippm/vyX0yNisO2TRtea5R3YEqqB7ZeI>
Subject: Re: [ippm] I-D Action: draft-ietf-ippm-capacity-metric-method-00.txt
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Hi Al,

Conditions which might occur while measuring are

- congestion of an interconnection or backbone interface. I don't expect th=
at to=20
  be prevalent, but it might happen. If the congested interface has a highe=
r=20
  bandwidth then the measurement sender, then the measurement packets=20
  won't arrive as a burst at the bottleneck. Further, Random Early Detectio=
n=20
  may be deployed. In both cases
  * packet loss is present, which is likely to occur independent of the sen=
der rate.=20
  * If the queue or congestion respectively is persistant, a small delay va=
riation is=20
     present, which is independent of the sender rate too. It is bigger tha=
n the=20
     delay variation of a non congested interface.

The drop pattern caused by a congested backbone or interconnection interfac=
e is likely not causing a drop pattern which easy to characterize. A measur=
ement of the access bandwidth is deteriorating to an estimate, as single lo=
sses and queuing at an access may be hard to discern from the queue and dro=
ps caused by backbone or interconnection links. If the access bandwidth is =
rate controlled by a policer, this will even be harder, as in that case no =
queue will build up at the access.

- the presence of middleboxes might result in transport layer or applicatio=
n specific=20
  rate limitations. A variety of conditions may arise, ranging from complet=
e blocking=20
  of a measurement flow to access bandwidth measurements being significantl=
y higher=20
  than the rates achieved by flows of other protocols or applications, if t=
he latter are=20
  rate controlled by a middlebox while the measurement flow isn't.

It may also be a good idea to foresee ECN support by the measurement system=
. A commodity ECN deployment may not be available by now, but standardizati=
on efforts of ECN based network and transport behavior have grown in the la=
st decade.

This list isn't exhaustive and others are invited to append or discuss the =
above scenarios. Hints on "how to detect" and "how to separate impact" of e=
ffects impairing capacity measurements are welcome (especially those easy t=
o implement :) .

Regards,

Ruediger


-----Urspr=FCngliche Nachricht-----
Von: ippm <ippm-bounces@ietf.org> Im Auftrag von MORTON, ALFRED C (AL)
Gesendet: Donnerstag, 30. Januar 2020 16:14
An: ippm@ietf.org
Betreff: Re: [ippm] I-D Action: draft-ietf-ippm-capacity-metric-method-00.t=
xt

Hi IPPM,

Thanks to everyone who supported adoption of our draft.
This version simply changes the filename.

At the IETF-106 Hackathon, we encountered some new conditions in our testin=
g with the prototype implementation:
https://github.com/IETF-Hackathon/ietf106-project-presentations/blob/master=
/106-acm-Hackathon-Measurements.pdf

Load Adjustment:=20
Search Algorithm uses Loss and delay variation feedback

Observed:
Random loss throughout some tests, with insignificant delay variation

Possible revisions to Search Algorithm, etc. under these conditions:
	Add a variable Loss threshold for conditions encountered
	Continue "large" rate increases when loss-only is encountered
	May need longer test durations under Loss-only Conditions

We'd like to discuss these findings further with the WG, and run some more =
tests to answer questions and investigate further.

regards,
Al, for the co-authors



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From: Tal Mizrahi <tal.mizrahi.phd@gmail.com>
Date: Wed, 5 Feb 2020 14:23:56 +0200
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To: Cociglio Mauro <mauro.cociglio@telecomitalia.it>
Cc: IETF IPPM WG <ippm@ietf.org>, IPPM Chairs <ippm-chairs@ietf.org>,  "draft-ietf-ippm-multipoint-alt-mark@ietf.org" <draft-ietf-ippm-multipoint-alt-mark@ietf.org>
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Subject: Re: [ippm] IPR Poll for draft-ietf-ippm-multipoint-alt-mark-04
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Hi Mauro,

Thanks for the update.
Once the updated IPR disclosure is submitted we can proceed with the
publication process.

Cheers,
Tal.

On Mon, Feb 3, 2020 at 6:51 PM Cociglio Mauro <
mauro.cociglio@telecomitalia.it> wrote:

> Hi All,
>
> we have submitted to IETF an update to our previous IPR declaration. It
> will be published as soon as the IETF Secretariat completes its checks,
> hopefully in a few days. The updated declaration refers to the very same
> patents as our two previous declarations: the update is aimed only at
> acknowledging the publication of a previously unpublished (yet declared)
> patent application and including updated patent data.
>
> I am not aware of any additional IPR.
>
> Best Regards.
>
> Mauro
>
> _____________________
> Mauro Cociglio
> Telecom Italia-TIM
> Via G. Reiss Romoli, 274
> 10148 - Torino (Italy)
> Tel.: +390112285028
> Mobile: +393357669751
> _____________________
>
>
>
> Da: Tal Mizrahi <tal.mizrahi.phd@gmail.com>
> Inviato: mercoled=C3=AC 29 gennaio 2020 14:09
> A: IETF IPPM WG <ippm@ietf.org>; IPPM Chairs <ippm-chairs@ietf.org>;
> draft-ietf-ippm-multipoint-alt-mark@ietf.org
> Oggetto: [EXT] IPR Poll for draft-ietf-ippm-multipoint-alt-mark-04
>
> Hi,
>
> This email begins a one-week poll for any IPRs that may apply to
> draft-ietf-ippm-multipoint-alt-mark-04.
>
> Are you aware of any IPR that applies to
> draft-ietf-ippm-multipoint-alt-mark-04?
>
> Specifically, if you are listed as a document author, please respond to
> this email (reply-to-all) stating whether or not you are aware of any
> relevant IPRs beyond the IPRs that have already been reported.
>
> Two IPRs have been disclosed for this draft so far:
> 3035 Telecom Italia SpA's Statement about IPR related to
> draft-fioccola-ippm-multipoint-alt-mark
> 3110 Telecom Italia SpA's Statement about IPR related to
> draft-fioccola-ippm-multipoint-alt-mark
> (Updates ID#: 3035)
>
> These disclosures are available at
> https://datatracker.ietf.org/ipr/search/?submit=3Ddraft&id=3Ddraft-ietf-i=
ppm-multipoint-alt-mark
>
> If you are aware of a relevant IPR, please state whether this IPR has bee=
n
> disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 an=
d
> 5378 for more details).
>
> This poll closes on the 5th of February 2020.
>
> Best regards,
> Tal.
> [As shepherd of draft-ietf-ippm-multipoint-alt-mark]
>
> Questo messaggio e i suoi allegati sono indirizzati esclusivamente alle
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ra
> abbiate ricevuto questo documento per errore siete cortesemente pregati d=
i
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> distruzione, Grazie.
>
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> intended recipient, please delete this message and any attachments and
> advise the sender by return e-mail, Thanks.
>
> Rispetta l'ambiente. Non stampare questa mail se non =C3=A8 necessario.
>

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<div dir=3D"ltr">Hi Mauro,<div><br></div><div>Thanks for the update.</div><=
div>Once the updated IPR disclosure is submitted we can proceed with the pu=
blication process.</div><div><br></div><div>Cheers,</div><div>Tal.</div></d=
iv><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On =
Mon, Feb 3, 2020 at 6:51 PM Cociglio Mauro &lt;<a href=3D"mailto:mauro.coci=
glio@telecomitalia.it">mauro.cociglio@telecomitalia.it</a>&gt; wrote:<br></=
div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bor=
der-left:1px solid rgb(204,204,204);padding-left:1ex">Hi All,<br>
<br>
we have submitted to IETF an update to our previous IPR declaration. It wil=
l be published as soon as the IETF Secretariat completes its checks, hopefu=
lly in a few days. The updated declaration refers to the very same patents =
as our two previous declarations: the update is aimed only at acknowledging=
 the publication of a previously unpublished (yet declared) patent applicat=
ion and including updated patent data.<br>
<br>
I am not aware of any additional IPR.<br>
<br>
Best Regards.<br>
<br>
Mauro<br>
<br>
_____________________<br>
Mauro Cociglio<br>
Telecom Italia-TIM<br>
Via G. Reiss Romoli, 274<br>
10148 - Torino (Italy)<br>
Tel.: +390112285028<br>
Mobile: +393357669751<br>
_____________________<br>
<br>
<br>
<br>
Da: Tal Mizrahi &lt;<a href=3D"mailto:tal.mizrahi.phd@gmail.com" target=3D"=
_blank">tal.mizrahi.phd@gmail.com</a>&gt; <br>
Inviato: mercoled=C3=AC 29 gennaio 2020 14:09<br>
A: IETF IPPM WG &lt;<a href=3D"mailto:ippm@ietf.org" target=3D"_blank">ippm=
@ietf.org</a>&gt;; IPPM Chairs &lt;<a href=3D"mailto:ippm-chairs@ietf.org" =
target=3D"_blank">ippm-chairs@ietf.org</a>&gt;; <a href=3D"mailto:draft-iet=
f-ippm-multipoint-alt-mark@ietf.org" target=3D"_blank">draft-ietf-ippm-mult=
ipoint-alt-mark@ietf.org</a><br>
Oggetto: [EXT] IPR Poll for draft-ietf-ippm-multipoint-alt-mark-04<br>
<br>
Hi,<br>
<br>
This email begins a one-week poll for any=C2=A0IPRs=C2=A0that may apply to =
draft-ietf-ippm-multipoint-alt-mark-04.<br>
<br>
Are you aware of any=C2=A0IPR=C2=A0that applies to draft-ietf-ippm-multipoi=
nt-alt-mark-04?=C2=A0<br>
<br>
Specifically, if you are listed as a document author, please respond to thi=
s email (reply-to-all) stating whether or not you are aware of any relevant=
=C2=A0IPRs beyond the IPRs that have already been reported.<br>
<br>
Two IPRs have been disclosed for this draft so far:<br>
3035 Telecom Italia SpA&#39;s Statement about IPR related to draft-fioccola=
-ippm-multipoint-alt-mark<br>
3110 Telecom Italia SpA&#39;s Statement about IPR related to draft-fioccola=
-ippm-multipoint-alt-mark<br>
(Updates ID#: 3035)<br>
<br>
These disclosures are available at=C2=A0<a href=3D"https://datatracker.ietf=
.org/ipr/search/?submit=3Ddraft&amp;id=3Ddraft-ietf-ippm-multipoint-alt-mar=
k" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/ipr/se=
arch/?submit=3Ddraft&amp;id=3Ddraft-ietf-ippm-multipoint-alt-mark</a><br>
<br>
If you are aware of a relevant=C2=A0IPR, please state whether this=C2=A0IPR=
=C2=A0has been disclosed in compliance with IETF=C2=A0IPR=C2=A0rules (see R=
FCs 3979, 4879, 3669 and 5378 for more details).<br>
<br>
This poll closes on the 5th of February 2020.<br>
<br>
Best regards,<br>
Tal.<br>
[As shepherd of=C2=A0draft-ietf-ippm-multipoint-alt-mark]<br>
<br>
Questo messaggio e i suoi allegati sono indirizzati esclusivamente alle per=
sone indicate. La diffusione, copia o qualsiasi altra azione derivante dall=
a conoscenza di queste informazioni sono rigorosamente vietate. Qualora abb=
iate ricevuto questo documento per errore siete cortesemente pregati di dar=
ne immediata comunicazione al mittente e di provvedere alla sua distruzione=
, Grazie. <br>
<br>
This e-mail and any attachments is confidential and may contain privileged =
information intended for the addressee(s) only. Dissemination, copying, pri=
nting or use by anybody else is unauthorised. If you are not the intended r=
ecipient, please delete this message and any attachments and advise the sen=
der by return e-mail, Thanks. <br>
<br>
Rispetta l&#39;ambiente. Non stampare questa mail se non =C3=A8 necessario.=
<br>
</blockquote></div>

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In-Reply-To: <ab8fa52e659248adbe6db6dee2a847a2@huawei.com>
From: Tal Mizrahi <tal.mizrahi.phd@gmail.com>
Date: Wed, 5 Feb 2020 14:25:48 +0200
Message-ID: <CABUE3XkXU6hHK1WogLoD_7H2wGJhYk9M-JOY6Oha-Zz516feYQ@mail.gmail.com>
To: Giuseppe Fioccola <giuseppe.fioccola@huawei.com>
Cc: IETF IPPM WG <ippm@ietf.org>,  "draft-ietf-ippm-multipoint-alt-mark@ietf.org" <draft-ietf-ippm-multipoint-alt-mark@ietf.org>
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Subject: Re: [ippm] Shepherd review of draft-fioccola-ippm-multipoint-alt-mark-04
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Hi Giuseppe,

Thanks for the quick revision update.
Looks good.

Once the IPR poll is complete we will continue with the process.

Cheers,
Tal.

On Fri, Jan 31, 2020 at 12:02 PM Giuseppe Fioccola <
giuseppe.fioccola@huawei.com> wrote:

> Hi Tal,
>
> I have just submitted the new -05 version.
>
> Please let me know if this addresses your remarks.
>
>
>
> Regards,
>
>
>
> Giuseppe
>
>
>
>
>
> *From:* Tal Mizrahi [mailto:tal.mizrahi.phd@gmail.com]
> *Sent:* Thursday, January 30, 2020 12:17 PM
> *To:* Giuseppe Fioccola <giuseppe.fioccola@huawei.com>
> *Cc:* IETF IPPM WG <ippm@ietf.org>;
> draft-ietf-ippm-multipoint-alt-mark@ietf.org
> *Subject:* Re: Shepherd review of
> draft-fioccola-ippm-multipoint-alt-mark-04
>
>
>
> Hi Giuseppe,
>
>
>
> Sounds good to me.
>
> If you can update the draft based on these responses that would be great.
>
>
>
> Cheers,
>
> Tal.
>
>
>
> On Thu, Jan 30, 2020 at 12:37 PM Giuseppe Fioccola <
> giuseppe.fioccola@huawei.com> wrote:
>
> Dear Tal,
>
> Please find my answers inline tagged as [GF].
>
> Let me know if these address your comments, so I can update and submit a
> new version.
>
>
>
> Regards,
>
>
>
> Giuseppe
>
>
>
>
>
> *From:* Tal Mizrahi [mailto:tal.mizrahi.phd@gmail.com]
> *Sent:* Wednesday, January 29, 2020 2:50 PM
> *To:* IETF IPPM WG <ippm@ietf.org>;
> draft-ietf-ippm-multipoint-alt-mark@ietf.org
> *Subject:* Shepherd review of draft-fioccola-ippm-multipoint-alt-mark-04
>
>
>
> Dear authors,
>
>
>
> I believe this document is ready for publication, with a few minor
> comments.
>
> If the authors can kindly address these comments and post an updated
> version, we will proceed with the publication process.
>
>
>
> Comments:
>
>
>
> Section 5:
> "The Monitored Network Packet Loss with n input nodes and m output nodes
> is given by"
> Please clarify whether the metric PL is measured on a per flow (5-tuple)
> basis, as defined in Section 4, or measured globally for all the flows.
>
>
>
> [GF]: The Monitored Network Packet Loss is measured for one single flow
> but since it is a multipoint flow, the identification fields of the
> 5-tuple, in general, can be selected without any constraints. I can specify
> better this point.
>
>
>
> Section 5:
> "The equation is applied on a per-time-interval basis."
> Please note that the term time interval has not been defined before this
> point in the document. This would be a good point to add a sentence that
> explains that an "interval" is derived from an alternating marking field.
>
>
>
> [GF]: Sure. I will add a note about the interval here referred, that is
> the alternate marking period as defined in RFC 8321.
>
>
>
> Section 6:
> Please clarify whether a cluster is defined on a per-flow basis, or is it
> assumed that all flows are monitored at all times.
>
>
>
> [GF]: Yes, the Cluster is defined on a per-flow basis. I can add a
> sentence to clarify.
>
>
>
> Section 7:
> "In general the measurement interval for describing the results is the
> interval of the marking node that is more aligned with the start of the
> measurement"
> Please clarify what "more aligned" means. The figure seems to indicate
> that the measurement interval is determined by the node with the earliest
> clock, thus starting the measurement interval ahead of the other nodes.
>
>
>
> [GF]: Yes, in this case we assume that the node with the earliest clock
> identifies the right starting time of the measurement, but it is just an
> assumption and other possibilities can happen. This is to introduce the new
> constraint that needs to be considered for the proper function of the
> method. I will clarify this point as well.
>
>
>
>
>
> Cheers,
>
> Tal Mizrahi.
>
> [As shepherd of draft-fioccola-ippm-multipoint-alt-mark]
>
>

--000000000000531cbe059dd342e2
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Giuseppe,<div><br></div><div>Thanks for the quick revis=
ion update.</div><div>Looks good.</div><div><br></div><div>Once the IPR pol=
l is complete we will continue with the process.</div><div><br></div><div>C=
heers,</div><div>Tal.</div></div><br><div class=3D"gmail_quote"><div dir=3D=
"ltr" class=3D"gmail_attr">On Fri, Jan 31, 2020 at 12:02 PM Giuseppe Fiocco=
la &lt;<a href=3D"mailto:giuseppe.fioccola@huawei.com">giuseppe.fioccola@hu=
awei.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D=
"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-le=
ft:1ex">





<div lang=3D"EN-US">
<div class=3D"gmail-m_2143483718448738102WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">Hi Tal,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">I have just submitted the new -05 version.<u=
></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">Please let me know if this addresses your re=
marks.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">Regards,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">Giuseppe<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><a name=3D"m_2143483718448738102__MailEndCompose"><s=
pan style=3D"font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,=
125)"><u></u>=C2=A0<u></u></span></a></p>
<p class=3D"MsoNormal"><b><span style=3D"font-size:11pt;font-family:Calibri=
,sans-serif">From:</span></b><span style=3D"font-size:11pt;font-family:Cali=
bri,sans-serif"> Tal Mizrahi [mailto:<a href=3D"mailto:tal.mizrahi.phd@gmai=
l.com" target=3D"_blank">tal.mizrahi.phd@gmail.com</a>]
<br>
<b>Sent:</b> Thursday, January 30, 2020 12:17 PM<br>
<b>To:</b> Giuseppe Fioccola &lt;<a href=3D"mailto:giuseppe.fioccola@huawei=
.com" target=3D"_blank">giuseppe.fioccola@huawei.com</a>&gt;<br>
<b>Cc:</b> IETF IPPM WG &lt;<a href=3D"mailto:ippm@ietf.org" target=3D"_bla=
nk">ippm@ietf.org</a>&gt;; <a href=3D"mailto:draft-ietf-ippm-multipoint-alt=
-mark@ietf.org" target=3D"_blank">draft-ietf-ippm-multipoint-alt-mark@ietf.=
org</a><br>
<b>Subject:</b> Re: Shepherd review of draft-fioccola-ippm-multipoint-alt-m=
ark-04<u></u><u></u></span></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">Hi Giuseppe,<u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Sounds good to me.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">If you can update the draft based on these responses=
 that would be great.<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">Tal.<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 Thu, Jan 30, 2020 at 12:37 PM Giuseppe Fioccola &=
lt;<a href=3D"mailto:giuseppe.fioccola@huawei.com" target=3D"_blank">giusep=
pe.fioccola@huawei.com</a>&gt; wrote:<u></u><u></u></p>
</div>
<blockquote style=3D"border-top:none;border-right:none;border-bottom:none;b=
order-left:1pt solid rgb(204,204,204);padding:0in 0in 0in 6pt;margin:5pt 0i=
n 5pt 4.8pt">
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">Dear Tal,</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">Please find my answers inline tagged as [GF]=
.</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">Let me know if these address your comments, =
so I can update and submit a new version.</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">=C2=A0</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">Regards,</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">=C2=A0</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">Giuseppe</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">=C2=A0</span><u></u><u></u></p>
<p class=3D"MsoNormal"><a name=3D"m_2143483718448738102_m_-5433284999022132=
682__MailEndCompose"><span style=3D"font-size:11pt;font-family:Calibri,sans=
-serif;color:rgb(31,73,125)">=C2=A0</span></a><u></u><u></u></p>
<p class=3D"MsoNormal"><b><span style=3D"font-size:11pt;font-family:Calibri=
,sans-serif">From:</span></b><span style=3D"font-size:11pt;font-family:Cali=
bri,sans-serif"> Tal Mizrahi [mailto:</span><a href=3D"mailto:tal.mizrahi.p=
hd@gmail.com" target=3D"_blank"><span style=3D"font-size:11pt;font-family:C=
alibri,sans-serif">tal.mizrahi.phd@gmail.com</span></a><span style=3D"font-=
size:11pt;font-family:Calibri,sans-serif">]
<br>
<b>Sent:</b> Wednesday, January 29, 2020 2:50 PM<br>
<b>To:</b> IETF IPPM WG &lt;</span><a href=3D"mailto:ippm@ietf.org" target=
=3D"_blank"><span style=3D"font-size:11pt;font-family:Calibri,sans-serif">i=
ppm@ietf.org</span></a><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif">&gt;;
</span><a href=3D"mailto:draft-ietf-ippm-multipoint-alt-mark@ietf.org" targ=
et=3D"_blank"><span style=3D"font-size:11pt;font-family:Calibri,sans-serif"=
>draft-ietf-ippm-multipoint-alt-mark@ietf.org</span></a><span style=3D"font=
-size:11pt;font-family:Calibri,sans-serif"><br>
<b>Subject:</b> Shepherd review of draft-fioccola-ippm-multipoint-alt-mark-=
04</span><u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<div>
<p class=3D"MsoNormal">Dear authors,<u></u><u></u></p>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">I believe this document is ready for publication, wi=
th a few minor comments.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">If the authors can kindly address these comments and=
 post an updated version, we will proceed with the publication process.<u><=
/u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Comments:<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Section 5:<br>
&quot;The Monitored Network Packet Loss with n input nodes and m output nod=
es is given by&quot;<br>
Please clarify whether the metric PL is measured on a per flow (5-tuple) ba=
sis, as defined in Section 4, or measured globally for all the flows.<u></u=
><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">=C2=A0</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">[GF]: The Monitored Network Packet Loss is m=
easured for one single flow but since it is a multipoint
 flow, the identification fields of the 5-tuple, in general, can be selecte=
d without any constraints. I can specify better this point.</span><u></u><u=
></u></p>
<p class=3D"MsoNormal"><br>
<br>
Section 5:<br>
&quot;The equation is applied on a per-time-interval basis.&quot;<br>
Please note that the term time interval has not been defined before this po=
int in the document. This would be a good point to add a sentence that expl=
ains that an &quot;interval&quot; is derived from an alternating marking fi=
eld.<u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">=C2=A0</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">[GF]: Sure. I will add a note about the inte=
rval here referred, that is the alternate marking period
 as defined in RFC 8321.</span><u></u><u></u></p>
<p class=3D"MsoNormal"><br>
<br>
Section 6:<br>
Please clarify whether a cluster is defined on a per-flow basis, or is it a=
ssumed that all flows are monitored at all times.<u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">=C2=A0</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">[GF]: Yes, the Cluster is defined on a per-f=
low basis. I can add a sentence to clarify.</span><u></u><u></u></p>
<p class=3D"MsoNormal"><br>
<br>
Section 7:<br>
&quot;In general the measurement interval for describing the results is the=
 interval of the marking node that is more aligned with the start of the me=
asurement&quot;<br>
Please clarify what &quot;more aligned&quot; means. The figure seems to ind=
icate that the measurement interval is determined by the node with the earl=
iest clock, thus starting the measurement interval ahead of the other nodes=
.<u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">=C2=A0</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">[GF]: Yes, in this case we assume that the n=
ode with the earliest clock identifies the right starting
 time of the measurement, but it is just an assumption and other possibilit=
ies can happen. This is to introduce the new constraint that needs to be co=
nsidered for the proper function of the method. I will clarify this point a=
s well.</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif;color:rgb(31,73,125)">=C2=A0</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Cheers,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Tal Mizrahi.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">[As shepherd of draft-fioccola-ippm-multipoint-alt-m=
ark]<u></u><u></u></p>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</div>

</blockquote></div>

--000000000000531cbe059dd342e2--


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From: Giuseppe Fioccola <giuseppe.fioccola@huawei.com>
To: Tal Mizrahi <tal.mizrahi.phd@gmail.com>
CC: IETF IPPM WG <ippm@ietf.org>, "draft-ietf-ippm-multipoint-alt-mark@ietf.org" <draft-ietf-ippm-multipoint-alt-mark@ietf.org>
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Subject: [ippm] I-D Action: draft-ietf-ippm-ioam-direct-export-00.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 IP Performance Measurement WG of the IETF.

        Title           : In-situ OAM Direct Exporting
        Authors         : Haoyu Song
                          Barak Gafni
                          Tianran Zhou
                          Zhenbin Li
                          Frank Brockners
                          Shwetha Bhandari
                          Ramesh Sivakolundu
                          Tal Mizrahi
	Filename        : draft-ietf-ippm-ioam-direct-export-00.txt
	Pages           : 10
	Date            : 2020-02-06

Abstract:
   In-situ Operations, Administration, and Maintenance (IOAM) is used
   for recording and collecting operational and telemetry information.
   Specifically, IOAM allows telemetry data to be pushed into data
   packets while they traverse the network.  This document introduces a
   new IOAM option type called the Direct Export (DEX) option, which is
   used as a trigger for IOAM data to be directly exported without being
   pushed into in-flight data packets.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ippm-ioam-direct-export/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-ippm-ioam-direct-export-00
https://datatracker.ietf.org/doc/html/draft-ietf-ippm-ioam-direct-export-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/


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From: Tal Mizrahi <tal.mizrahi.phd@gmail.com>
Date: Thu, 6 Feb 2020 10:31:27 +0200
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--0000000000001aec47059de41a2f
Content-Type: text/plain; charset="UTF-8"

Hi,

This is the first "draft-ietf" version of this document, with minor changes
compared to the previous version.
The main changes compared to the previous version:
- The term collector was replaced by a more general term - "receiving
entity".
- Some unused references were removed.

We would like feedback regarding the main open issue in this document
(described in Section 7), regarding the Hop Limit / Hop Count.
Specifically, we are looking for feedback about the question: do you think
the DEX option should include an explicit Hop Count field?

Cheers,
Tal.


On Thu, Feb 6, 2020 at 10:18 AM <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 IP Performance Measurement WG of the IETF.
>
>         Title           : In-situ OAM Direct Exporting
>         Authors         : Haoyu Song
>                           Barak Gafni
>                           Tianran Zhou
>                           Zhenbin Li
>                           Frank Brockners
>                           Shwetha Bhandari
>                           Ramesh Sivakolundu
>                           Tal Mizrahi
>         Filename        : draft-ietf-ippm-ioam-direct-export-00.txt
>         Pages           : 10
>         Date            : 2020-02-06
>
> Abstract:
>    In-situ Operations, Administration, and Maintenance (IOAM) is used
>    for recording and collecting operational and telemetry information.
>    Specifically, IOAM allows telemetry data to be pushed into data
>    packets while they traverse the network.  This document introduces a
>    new IOAM option type called the Direct Export (DEX) option, which is
>    used as a trigger for IOAM data to be directly exported without being
>    pushed into in-flight data packets.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-ippm-ioam-direct-export/
>
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-ippm-ioam-direct-export-00
> https://datatracker.ietf.org/doc/html/draft-ietf-ippm-ioam-direct-export-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/
>
> _______________________________________________
> ippm mailing list
> ippm@ietf.org
> https://www.ietf.org/mailman/listinfo/ippm
>

--0000000000001aec47059de41a2f
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi,<div><br></div><div>This is the first &quot;draft-ietf&=
quot; version of this document, with minor changes compared to the previous=
 version.</div><div>The main changes compared to the previous version:</div=
><div>- The term collector was replaced by a more general term - &quot;rece=
iving entity&quot;.</div><div>- Some unused references were removed.</div><=
div><br></div><div>We would like feedback regarding the main open issue in =
this document (described in Section 7), regarding the Hop Limit / Hop Count=
. Specifically, we are looking for feedback about the question: do you thin=
k the DEX option should include an explicit Hop Count field?<br></div><div>=
<br></div><div>Cheers,</div><div>Tal.</div><div><br></div></div><br><div cl=
ass=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Feb 6, 20=
20 at 10:18 AM &lt;<a href=3D"mailto:internet-drafts@ietf.org">internet-dra=
fts@ietf.org</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" styl=
e=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);paddin=
g-left:1ex"><br>
A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.<br>
This draft is a work item of the IP Performance Measurement WG of the IETF.=
<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:=
 In-situ OAM Direct Exporting<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: Haoy=
u Song<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Barak Gafni<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Tianran Zhou<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Zhenbin Li<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Frank Brockners<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Shwetha Bhandari<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Ramesh Sivakolundu<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Tal Mizrahi<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-iet=
f-ippm-ioam-direct-export-00.txt<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:=
 10<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 :=
 2020-02-06<br>
<br>
Abstract:<br>
=C2=A0 =C2=A0In-situ Operations, Administration, and Maintenance (IOAM) is =
used<br>
=C2=A0 =C2=A0for recording and collecting operational and telemetry informa=
tion.<br>
=C2=A0 =C2=A0Specifically, IOAM allows telemetry data to be pushed into dat=
a<br>
=C2=A0 =C2=A0packets while they traverse the network.=C2=A0 This document i=
ntroduces a<br>
=C2=A0 =C2=A0new IOAM option type called the Direct Export (DEX) option, wh=
ich is<br>
=C2=A0 =C2=A0used as a trigger for IOAM data to be directly exported withou=
t being<br>
=C2=A0 =C2=A0pushed into in-flight data packets.<br>
<br>
<br>
The IETF datatracker status page for this draft is:<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-ietf-ippm-ioam-direct-exp=
ort/" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/doc=
/draft-ietf-ippm-ioam-direct-export/</a><br>
<br>
There are also htmlized versions available at:<br>
<a href=3D"https://tools.ietf.org/html/draft-ietf-ippm-ioam-direct-export-0=
0" rel=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html/draft-i=
etf-ippm-ioam-direct-export-00</a><br>
<a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-ippm-ioam-direc=
t-export-00" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.=
org/doc/html/draft-ietf-ippm-ioam-direct-export-00</a><br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
Internet-Drafts are also available by anonymous FTP at:<br>
<a href=3D"ftp://ftp.ietf.org/internet-drafts/" rel=3D"noreferrer" target=
=3D"_blank">ftp://ftp.ietf.org/internet-drafts/</a><br>
<br>
_______________________________________________<br>
ippm mailing list<br>
<a href=3D"mailto:ippm@ietf.org" target=3D"_blank">ippm@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/ippm" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/ippm</a><br>
</blockquote></div>

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From: "Frank Brockners (fbrockne)" <fbrockne@cisco.com>
To: Tommy Pauly <tpauly=40apple.com@dmarc.ietf.org>, IETF IPPM WG <ippm@ietf.org>
Thread-Topic: [ippm] Working Group Last Call: draft-ietf-ippm-ioam-data
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Subject: Re: [ippm] Working Group Last Call: draft-ietf-ippm-ioam-data
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Many thanks to all the reviewers of draft-ietf-ippm-ioam-data-08 for their =
excellent and detailed feedback.

In order to structure process of including the feedback in the next revisio=
n of the document we've created a set of issues on git which not only conta=
in the individual feedback, grouped by topic areas, but also suggest an app=
roach on how to tackle an individual item:

  *   Issue #149: draft-ietf-ippm-ioam-data-08 WGLC#1 comments: Editorial<h=
ttps://github.com/inband-oam/ietf/issues/149>
  *   Issue #150: draft-ietf-ippm-ioam-data-08 WGLC#1 comments: Nomenclatur=
e<https://github.com/inband-oam/ietf/issues/150>
  *   Issue #151: draft-ietf-ippm-ioam-data-08 WGLC#1 comments: Clarificati=
ons to SHOULD statements<https://github.com/inband-oam/ietf/issues/151>
  *   Issue #152: draft-ietf-ippm-ioam-data-08 WGLC#1 comments: Add further=
 detail/clarifications to existing definitions<https://github.com/inband-oa=
m/ietf/issues/152>
  *   Issue #153: draft-ietf-ippm-ioam-data-08 WGLC#1 comments: Changes to =
existing definitions<https://github.com/inband-oam/ietf/issues/153>
  *   Issue #154: draft-ietf-ippm-ioam-data-08 WGLC#1 comments: Suggestions=
 for additional data fields<https://github.com/inband-oam/ietf/issues/154>
  *   Issue #155: draft-ietf-ippm-ioam-data-08 WGLC#1 comments: Security re=
lated<https://github.com/inband-oam/ietf/issues/155>
  *   Issue #156: draft-ietf-ippm-ioam-data-08 WGLC#1 comments: Needs clari=
fication on timestamp insertion in E2E option<https://github.com/inband-oam=
/ietf/issues/156>
  *   Issue #157: draft-ietf-ippm-ioam-data-08 WGLC#1 comments: Editorial o=
n Pre-allocated and Incremental Trace Options<https://github.com/inband-oam=
/ietf/issues/157>
  *   Issue #158: draft-ietf-ippm-ioam-data-08 WGLC#1 comments: Trace-Flags=
 Registry clarification<https://github.com/inband-oam/ietf/issues/158>
  *   Issue #159: draft-ietf-ippm-ioam-data-08 WGLC#1 comments: Editorial D=
EX leftovers<https://github.com/inband-oam/ietf/issues/159>

It would be great if you could review the list to ensure that it is complet=
e and captures all the feedback received. It would also be great to receive=
 feedback on the suggested approaches - either on git or here on the list, =
to help and guide creating appropriate text in the document.

Thanks much, Shwetha & Frank



From: ippm <ippm-bounces@ietf.org> On Behalf Of Tommy Pauly
Sent: Montag,27. Januar 2020 19:09
To: Tommy Pauly <tpauly=3D40apple.com@dmarc.ietf.org>
Cc: IETF IPPM WG <ippm@ietf.org>
Subject: Re: [ippm] Working Group Last Call: draft-ietf-ippm-ioam-data

Hi IPPM,

Thanks for the feedback on this draft-ietf-ippm-ioam-data!

Based on the reviews, we would like to see a new version of the document po=
sted, so that the group can take a look at those changes and see if we thin=
k we're ready after that.

Authors, please post a new version when ready.

Best,
Tommy


On Jan 7, 2020, at 8:47 AM, Tommy Pauly <tpauly=3D40apple.com@dmarc.ietf.or=
g<mailto:tpauly=3D40apple.com@dmarc.ietf.org>> wrote:

Hello IPPM,

Happy New Year! This email starts a working group last call for "Data Field=
s for In-situ OAM" (https://datatracker.ietf.org/doc/draft-ietf-ippm-ioam-d=
ata/).

The last call will end on Tuesday, January 21. Please reply to ippm@ietf.or=
g<mailto:ippm@ietf.org> with your reviews and comments. Please indicate whe=
ther you think this document is ready for publication.

Best,
Tommy (as co-chair)
_______________________________________________
ippm mailing list
ippm@ietf.org<mailto:ippm@ietf.org>
https://www.ietf.org/mailman/listinfo/ippm


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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Many thanks to all the reviewers of draft-ietf-ippm-=
ioam-data-08 for their excellent and detailed feedback.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">In order to structure process of including the feedb=
ack in the next revision of the document we&#8217;ve created a set of issue=
s on git which not only contain the individual feedback, grouped by topic a=
reas, but also suggest an approach on how
 to tackle an individual item:<o:p></o:p></p>
<ul style=3D"margin-top:0cm" type=3D"disc">
<li class=3D"MsoListParagraph" style=3D"margin-left:0cm;mso-list:l0 level1 =
lfo1">Issue #149:
<span style=3D"color:#24292E"><a href=3D"https://github.com/inband-oam/ietf=
/issues/149">draft-ietf-ippm-ioam-data-08 WGLC#1 comments: Editorial</a></s=
pan><o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"color:#24292E;m=
argin-left:0cm;mso-list:l0 level1 lfo1;background:white">
<span style=3D"color:black">Issue #150: </span><a href=3D"https://github.co=
m/inband-oam/ietf/issues/150">draft-ietf-ippm-ioam-data-08 WGLC#1 comments:=
 Nomenclature</a><o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"co=
lor:#24292E;margin-left:0cm;mso-list:l0 level1 lfo1;background:white">
<span style=3D"color:black">Issue #151: </span><a href=3D"https://github.co=
m/inband-oam/ietf/issues/151">draft-ietf-ippm-ioam-data-08 WGLC#1 comments:=
 Clarifications to SHOULD statements</a><o:p></o:p></li><li class=3D"MsoLis=
tParagraph" style=3D"color:#24292E;margin-left:0cm;mso-list:l0 level1 lfo1;=
background:white">
<span style=3D"color:black">Issue #152: </span><a href=3D"https://github.co=
m/inband-oam/ietf/issues/152">draft-ietf-ippm-ioam-data-08 WGLC#1 comments:=
 Add further detail/clarifications to existing definitions</a><o:p></o:p></=
li><li class=3D"MsoListParagraph" style=3D"color:#24292E;margin-left:0cm;ms=
o-list:l0 level1 lfo1;background:white">
<span style=3D"color:black">Issue #153: </span><a href=3D"https://github.co=
m/inband-oam/ietf/issues/153">draft-ietf-ippm-ioam-data-08 WGLC#1 comments:=
 Changes to existing definitions</a><o:p></o:p></li><li class=3D"MsoListPar=
agraph" style=3D"color:#24292E;margin-left:0cm;mso-list:l0 level1 lfo1;back=
ground:white">
<span style=3D"color:black">Issue #154: </span><a href=3D"https://github.co=
m/inband-oam/ietf/issues/154">draft-ietf-ippm-ioam-data-08 WGLC#1 comments:=
 Suggestions for additional data fields</a><o:p></o:p></li><li class=3D"Mso=
ListParagraph" style=3D"color:#24292E;margin-left:0cm;mso-list:l0 level1 lf=
o1;background:#F6F8FA">
<span style=3D"color:black">Issue #155: </span><a href=3D"https://github.co=
m/inband-oam/ietf/issues/155">draft-ietf-ippm-ioam-data-08 WGLC#1 comments:=
 Security related</a><o:p></o:p></li><li class=3D"MsoListParagraph" style=
=3D"color:#24292E;margin-left:0cm;mso-list:l0 level1 lfo1;background:white"=
>
<span style=3D"color:black">Issue #156: </span><a href=3D"https://github.co=
m/inband-oam/ietf/issues/156">draft-ietf-ippm-ioam-data-08 WGLC#1 comments:=
 Needs clarification on timestamp insertion in E2E option</a>
<o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"color:#24292E;margi=
n-left:0cm;mso-list:l0 level1 lfo1;background:white">
<span style=3D"color:black">Issue #157: </span><a href=3D"https://github.co=
m/inband-oam/ietf/issues/157">draft-ietf-ippm-ioam-data-08 WGLC#1 comments:=
 Editorial on Pre-allocated and Incremental Trace Options</a>
<o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"color:#24292E;margi=
n-left:0cm;mso-list:l0 level1 lfo1;background:white">
<span style=3D"color:black">Issue #158: </span><a href=3D"https://github.co=
m/inband-oam/ietf/issues/158">draft-ietf-ippm-ioam-data-08 WGLC#1 comments:=
 Trace-Flags Registry clarification</a>
<o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"color:#24292E;margi=
n-left:0cm;mso-list:l0 level1 lfo1;background:white">
<span style=3D"color:black">Issue #159: </span><a href=3D"https://github.co=
m/inband-oam/ietf/issues/159">draft-ietf-ippm-ioam-data-08 WGLC#1 comments:=
 Editorial DEX leftovers</a>
<o:p></o:p></li></ul>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"color:#242=
92E"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"color:#242=
92E">It would be great if you could review the list to ensure that it is co=
mplete and captures all the feedback received. It would also be great to re=
ceive feedback on the suggested approaches
 &#8211; either on git or here on the list, to help and guide creating appr=
opriate text in the document.<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"color:#242=
92E"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"color:#242=
92E">Thanks much, Shwetha &amp; Frank<o:p></o:p></span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b>From:</b> ippm &lt;ippm-bounces@ietf.org&gt; <b>O=
n Behalf Of </b>
Tommy Pauly<br>
<b>Sent:</b> Montag,27. Januar 2020 19:09<br>
<b>To:</b> Tommy Pauly &lt;tpauly=3D40apple.com@dmarc.ietf.org&gt;<br>
<b>Cc:</b> IETF IPPM WG &lt;ippm@ietf.org&gt;<br>
<b>Subject:</b> Re: [ippm] Working Group Last Call: draft-ietf-ippm-ioam-da=
ta<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Hi IPPM,<o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks for the feedback on this draft-ietf-ippm-ioam=
-data!<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Based on the reviews, we would like to see a new ver=
sion of the document posted, so that the group can take a look at those cha=
nges and see if we think we're ready after that.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Authors, please post a new version when ready.<o:p><=
/o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Best,<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Tommy<o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><br>
<br>
<o:p></o:p></p>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class=3D"MsoNormal">On Jan 7, 2020, at 8:47 AM, Tommy Pauly &lt;<a href=
=3D"mailto:tpauly=3D40apple.com@dmarc.ietf.org">tpauly=3D40apple.com@dmarc.=
ietf.org</a>&gt; wrote:<o:p></o:p></p>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<p class=3D"MsoNormal">Hello IPPM,<o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Happy New Year! This email starts a working group la=
st call for &quot;Data Fields for In-situ OAM&quot; (<a href=3D"https://dat=
atracker.ietf.org/doc/draft-ietf-ippm-ioam-data/">https://datatracker.ietf.=
org/doc/draft-ietf-ippm-ioam-data/</a>).<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">The last call will end on <b>Tuesday, January 21</b>=
. Please reply to
<a href=3D"mailto:ippm@ietf.org">ippm@ietf.org</a> with your reviews and co=
mments. Please indicate whether you think this document is ready for public=
ation.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Best,<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Tommy (as co-chair)<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal">_______________________________________________<br>
ippm mailing list<br>
<a href=3D"mailto:ippm@ietf.org">ippm@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/ippm">https://www.ietf.org=
/mailman/listinfo/ippm</a><o:p></o:p></p>
</div>
</blockquote>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</div>
</body>
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Thread-Topic: [ippm] I-D Action: draft-ietf-ippm-ioam-direct-export-00.txt
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Subject: [ippm] IPR Disclosure Telecom Italia SpA's Statement about IPR related to draft-ietf-ippm-multipoint-alt-mark
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Dear Giuseppe Fioccola, Mauro Cociglio, Amedeo Sapio, Riccardo Sisto:


An IPR disclosure that pertains to your Internet-Draft entitled "Multipoint
Alternate Marking method for passive and hybrid performance monitoring"
(draft-ietf-ippm-multipoint-alt-mark) was submitted to the IETF Secretariat
on 2020-01-30 and has been posted on the "IETF Page of Intellectual Property
Rights Disclosures" (https://datatracker.ietf.org/ipr/4010/). The title of
the IPR disclosure is "Telecom Italia SpA's Statement about IPR related to
draft-ietf-ippm-multipoint-alt-mark"


Thank you

IETF Secretariat


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Hi group,

I just added Ian Swett as a new chair to IPPM. Brian and Bill will step =
back as chair after the Vancouver meeting. To have a smooth transition =
period we will have four chairs until then.

Welcome Ian and thanks for helping out!

Mirja



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From: Ian Swett <ianswett@google.com>
Date: Fri, 14 Feb 2020 09:48:43 -0500
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--0000000000002081cb059e8a4ef8
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Thanks for the welcome, Mirja.

I look forward to chairing IPPM.  See everyone in Vancouver.

On Fri, Feb 14, 2020 at 9:43 AM Mirja Kuehlewind <ietf@kuehlewind.net>
wrote:

> Hi group,
>
> I just added Ian Swett as a new chair to IPPM. Brian and Bill will step
> back as chair after the Vancouver meeting. To have a smooth transition
> period we will have four chairs until then.
>
> Welcome Ian and thanks for helping out!
>
> Mirja
>
>
> _______________________________________________
> ippm mailing list
> ippm@ietf.org
> https://www.ietf.org/mailman/listinfo/ippm
>

--0000000000002081cb059e8a4ef8
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<div dir=3D"ltr">Thanks for the welcome, Mirja.<div><br>I look forward to c=
hairing IPPM.=C2=A0 See everyone in Vancouver.</div></div><br><div class=3D=
"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Feb 14, 2020 at=
 9:43 AM Mirja Kuehlewind &lt;<a href=3D"mailto:ietf@kuehlewind.net">ietf@k=
uehlewind.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);paddi=
ng-left:1ex">Hi group,<br>
<br>
I just added Ian Swett as a new chair to IPPM. Brian and Bill will step bac=
k as chair after the Vancouver meeting. To have a smooth transition period =
we will have four chairs until then.<br>
<br>
Welcome Ian and thanks for helping out!<br>
<br>
Mirja<br>
<br>
<br>
_______________________________________________<br>
ippm mailing list<br>
<a href=3D"mailto:ippm@ietf.org" target=3D"_blank">ippm@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/ippm" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/ippm</a><br>
</blockquote></div>

--0000000000002081cb059e8a4ef8--


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From nobody Sun Feb 16 06:25:14 2020
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From: Tal Mizrahi <tal.mizrahi.phd@gmail.com>
Date: Sun, 16 Feb 2020 16:24:57 +0200
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To: Cociglio Mauro <mauro.cociglio@telecomitalia.it>
Cc: IETF IPPM WG <ippm@ietf.org>, IPPM Chairs <ippm-chairs@ietf.org>,  "draft-ietf-ippm-multipoint-alt-mark@ietf.org" <draft-ietf-ippm-multipoint-alt-mark@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/ippm/d81UfbDJ8rXgpzwYjjl0qoH-bbA>
Subject: Re: [ippm] IPR Poll for draft-ietf-ippm-multipoint-alt-mark-04
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Hi Mauro,

A new IPR disclosure was filed last week with respect to this draft:
https://mailarchive.ietf.org/arch/msg/ippm/JKQHqoGNjBv-fI24A17ibx4o_5Y

Please indicate whether all the IPRs that you are aware of have been report=
ed.

Thanks,
Tal.

On Mon, Feb 3, 2020 at 6:51 PM Cociglio Mauro
<mauro.cociglio@telecomitalia.it> wrote:
>
> Hi All,
>
> we have submitted to IETF an update to our previous IPR declaration. It w=
ill be published as soon as the IETF Secretariat completes its checks, hope=
fully in a few days. The updated declaration refers to the very same patent=
s as our two previous declarations: the update is aimed only at acknowledgi=
ng the publication of a previously unpublished (yet declared) patent applic=
ation and including updated patent data.
>
> I am not aware of any additional IPR.
>
> Best Regards.
>
> Mauro
>
> _____________________
> Mauro Cociglio
> Telecom Italia-TIM
> Via G. Reiss Romoli, 274
> 10148 - Torino (Italy)
> Tel.: +390112285028
> Mobile: +393357669751
> _____________________
>
>
>
> Da: Tal Mizrahi <tal.mizrahi.phd@gmail.com>
> Inviato: mercoled=C3=AC 29 gennaio 2020 14:09
> A: IETF IPPM WG <ippm@ietf.org>; IPPM Chairs <ippm-chairs@ietf.org>; draf=
t-ietf-ippm-multipoint-alt-mark@ietf.org
> Oggetto: [EXT] IPR Poll for draft-ietf-ippm-multipoint-alt-mark-04
>
> Hi,
>
> This email begins a one-week poll for any IPRs that may apply to draft-ie=
tf-ippm-multipoint-alt-mark-04.
>
> Are you aware of any IPR that applies to draft-ietf-ippm-multipoint-alt-m=
ark-04?
>
> Specifically, if you are listed as a document author, please respond to t=
his email (reply-to-all) stating whether or not you are aware of any releva=
nt IPRs beyond the IPRs that have already been reported.
>
> Two IPRs have been disclosed for this draft so far:
> 3035 Telecom Italia SpA's Statement about IPR related to draft-fioccola-i=
ppm-multipoint-alt-mark
> 3110 Telecom Italia SpA's Statement about IPR related to draft-fioccola-i=
ppm-multipoint-alt-mark
> (Updates ID#: 3035)
>
> These disclosures are available at https://datatracker.ietf.org/ipr/searc=
h/?submit=3Ddraft&id=3Ddraft-ietf-ippm-multipoint-alt-mark
>
> If you are aware of a relevant IPR, please state whether this IPR has bee=
n disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 an=
d 5378 for more details).
>
> This poll closes on the 5th of February 2020.
>
> Best regards,
> Tal.
> [As shepherd of draft-ietf-ippm-multipoint-alt-mark]
>
> Questo messaggio e i suoi allegati sono indirizzati esclusivamente alle p=
ersone indicate. La diffusione, copia o qualsiasi altra azione derivante da=
lla conoscenza di queste informazioni sono rigorosamente vietate. Qualora a=
bbiate ricevuto questo documento per errore siete cortesemente pregati di d=
arne immediata comunicazione al mittente e di provvedere alla sua distruzio=
ne, Grazie.
>
> This e-mail and any attachments is confidential and may contain privilege=
d information intended for the addressee(s) only. Dissemination, copying, p=
rinting or use by anybody else is unauthorised. If you are not the intended=
 recipient, please delete this message and any attachments and advise the s=
ender by return e-mail, Thanks.
>
> Rispetta l'ambiente. Non stampare questa mail se non =C3=A8 necessario.


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From: Cociglio Mauro <mauro.cociglio@telecomitalia.it>
To: Tal Mizrahi <tal.mizrahi.phd@gmail.com>, IETF IPPM WG <ippm@ietf.org>, IPPM Chairs <ippm-chairs@ietf.org>, "draft-ietf-ippm-multipoint-alt-mark@ietf.org" <draft-ietf-ippm-multipoint-alt-mark@ietf.org>
Thread-Topic: IPR Poll for draft-ietf-ippm-multipoint-alt-mark-04
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Date: Mon, 17 Feb 2020 11:35:17 +0000
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From nobody Mon Feb 17 18:43:38 2020
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Subject: [ippm] Publication has been requested for draft-ietf-ippm-multipoint-alt-mark-05
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Tommy Pauly has requested publication of draft-ietf-ippm-multipoint-alt-mark-05 as Experimental on behalf of the IPPM working group.

Please verify the document's state at https://datatracker.ietf.org/doc/draft-ietf-ippm-multipoint-alt-mark/


From nobody Fri Feb 21 07:47:27 2020
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Subject: [ippm] AD review of draft-ietf-ippm-multipoint-alt-mark-05
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Hi authors,

I=E2=80=99m ready to request IETF last call for this document. However, =
I have one question I would like to discuss:

Why is this document experimental? I know that RFC8321 is also =
experimental, however, that was probably also a borderline decision but =
in RFC8321 there are at last mechanisms that will be implemented in =
interoperable protocols, while this document really only describes =
mechanisms that can be applied based on existed singling. Further if =
something is experimental, it also good practice to briefly discuss =
=E2=80=9Cwhat the experiment is=E2=80=9D. However, I don=E2=80=99t see =
this approbate here. Therefore for me this document is clearly =
informational. =20

As I=E2=80=99m stepping in March, and we are therefore running a bit out =
of time, I would like to start IETF last call today no matter what. If =
you read this mail in the next hours and agree to change to =
Informational, please do so right away and submit a new version. =
Otherwise I will request IETF last call anyway later today. Given that =
experimental and informational have the sam maturity level, we can still =
change the intended status later without having to re-do the IETF last =
call.

Also, as no normative language is used, please remove the Requirements =
Language disclaimer and reference to RFC2119 with the next update.

Find below some minor editorial nits that you may want to address now or =
in a later version!

Thanks!
Mirja


------
Some editorial nits:

1) Based on the RFC Style Guide RFC7322, you cannot use reference in the =
abstract. It fine to have an RFC named there, just remove the reference. =
Further I actually think the last sentence is probably not needed at all =
in the abstract.

2) In Intro:
OLD
"The alternate marking method, as presented until now, =E2=80=A6=E2=80=9D
NEW
"The alternate marking method, as described in RFC 8321 [RFC8321], =
=E2=80=A6=E2=80=9D

3) In Intro:
"Note that additional details about the
   Alternate Marking methodology are described in the paper
   [IEEE-Network-PNPM]=E2=80=9D
Is this sentence really needed? Should the spec in RFC8321 be complete?
(Note that the dot at the end of the sentence is also missing)

4) In Intro:
s/BUM (Broadcast Unknown Unicast Multicast)/BUM (Broadcast, =
Unknown-unicast, and Multicast)/

5) sec 8.2.1:
s/if we would perform a delay measurement/If we would perform a delay =
measurement/

6) sec 8.2.2:
s/that don't match/that do not match/

9) sec 9
s/flexibility to PM/flexibility to Performance Management (PM)/



From nobody Fri Feb 21 08:04:35 2020
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Subject: [ippm] I-D Action: draft-ietf-ippm-stamp-option-tlv-03.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the IP Performance Measurement WG of the IETF.

        Title           : Simple Two-way Active Measurement Protocol Optional Extensions
        Authors         : Greg Mirsky
                          Xiao Min
                          Henrik Nydell
                          Richard Foote
                          Adi Masputra
                          Ernesto Ruffini
	Filename        : draft-ietf-ippm-stamp-option-tlv-03.txt
	Pages           : 25
	Date            : 2020-02-21

Abstract:
   This document describes optional extensions to Simple Two-way Active
   Measurement Protocol (STAMP) which enable measurement performance
   metrics in addition to ones supported by the STAMP base
   specification.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-ippm-stamp-option-tlv-03
https://datatracker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tlv-03

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-ippm-stamp-option-tlv-03


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

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


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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Fri, 21 Feb 2020 08:07:16 -0800
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Subject: [ippm] Fwd: New Version Notification for draft-ietf-ippm-stamp-option-tlv-03.txt
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Content-Type: text/plain; charset="UTF-8"

Dear All,
the new version includes updates to the Followup Telemetry TLV and
introduces the new HMAC TLV.
We always welcome and greatly appreciate your comments, questions, and
suggestions.

Regards,
Greg

---------- Forwarded message ---------
From: <internet-drafts@ietf.org>
Date: Fri, Feb 21, 2020 at 8:04 AM
Subject: New Version Notification for
draft-ietf-ippm-stamp-option-tlv-03.txt
To: Henrik Nydell <hnydell@accedian.com>, Min Xiao <xiao.min2@zte.com.cn>,
Adi Masputra <adi@apple.com>, Ernesto Ruffini <eruffini@outsys.org>,
Gregory Mirsky <gregimirsky@gmail.com>, Richard Foote <
footer.foote@nokia.com>



A new version of I-D, draft-ietf-ippm-stamp-option-tlv-03.txt
has been successfully submitted by Greg Mirsky and posted to the
IETF repository.

Name:           draft-ietf-ippm-stamp-option-tlv
Revision:       03
Title:          Simple Two-way Active Measurement Protocol Optional
Extensions
Document date:  2020-02-21
Group:          ippm
Pages:          25
URL:
https://www.ietf.org/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.txt
Status:
https://datatracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/
Htmlized:
https://tools.ietf.org/html/draft-ietf-ippm-stamp-option-tlv-03
Htmlized:
https://datatracker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tlv
Diff:
https://www.ietf.org/rfcdiff?url2=draft-ietf-ippm-stamp-option-tlv-03

Abstract:
   This document describes optional extensions to Simple Two-way Active
   Measurement Protocol (STAMP) which enable measurement performance
   metrics in addition to ones supported by the STAMP base
   specification.




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

The IETF Secretariat

--000000000000c9bc2d059f183745
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<div dir=3D"ltr">Dear All,<div>the new version includes updates to the Foll=
owup Telemetry TLV and introduces the new HMAC TLV.</div><div>We always wel=
come and greatly appreciate your comments, questions, and suggestions.</div=
><div><br></div><div>Regards,</div><div>Greg<br><br><div class=3D"gmail_quo=
te"><div dir=3D"ltr" class=3D"gmail_attr">---------- Forwarded message ----=
-----<br>From: <span dir=3D"auto">&lt;<a href=3D"mailto:internet-drafts@iet=
f.org">internet-drafts@ietf.org</a>&gt;</span><br>Date: Fri, Feb 21, 2020 a=
t 8:04 AM<br>Subject: New Version Notification for draft-ietf-ippm-stamp-op=
tion-tlv-03.txt<br>To: Henrik Nydell &lt;<a href=3D"mailto:hnydell@accedian=
.com">hnydell@accedian.com</a>&gt;, Min Xiao &lt;<a href=3D"mailto:xiao.min=
2@zte.com.cn">xiao.min2@zte.com.cn</a>&gt;, Adi Masputra &lt;<a href=3D"mai=
lto:adi@apple.com">adi@apple.com</a>&gt;, Ernesto Ruffini &lt;<a href=3D"ma=
ilto:eruffini@outsys.org">eruffini@outsys.org</a>&gt;, Gregory Mirsky &lt;<=
a href=3D"mailto:gregimirsky@gmail.com">gregimirsky@gmail.com</a>&gt;, Rich=
ard Foote &lt;<a href=3D"mailto:footer.foote@nokia.com">footer.foote@nokia.=
com</a>&gt;<br></div><br><br><br>
A new version of I-D, draft-ietf-ippm-stamp-option-tlv-03.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-ippm-stamp-option-=
tlv<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A003<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Simple Two-way Active Measurement =
Protocol Optional Extensions<br>
Document date:=C2=A0 2020-02-21<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 ippm<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 25<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.txt" rel=3D"noreferr=
er" target=3D"_blank">https://www.ietf.org/internet-drafts/draft-ietf-ippm-=
stamp-option-tlv-03.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ietf-ippm-stamp-option-tlv/" rel=3D"noreferrer" target=3D"_=
blank">https://datatracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/</=
a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ietf-ippm-stamp-option-tlv-03" rel=3D"noreferrer" target=3D"_blank">h=
ttps://tools.ietf.org/html/draft-ietf-ippm-stamp-option-tlv-03</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ietf-ippm-stamp-option-tlv" rel=3D"noreferrer" target=3D"_b=
lank">https://datatracker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tl=
v</a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ietf-ippm-stamp-option-tlv-03" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-ippm-stamp-=
option-tlv-03</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document describes optional extensions to Simple Two-way =
Active<br>
=C2=A0 =C2=A0Measurement Protocol (STAMP) which enable measurement performa=
nce<br>
=C2=A0 =C2=A0metrics in addition to ones supported by the STAMP base<br>
=C2=A0 =C2=A0specification.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
</div></div></div>

--000000000000c9bc2d059f183745--


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From: Giuseppe Fioccola <giuseppe.fioccola@huawei.com>
To: Mirja Kuehlewind <ietf@kuehlewind.net>, draft-ietf-ippm-multipoint-alt-mark.all <draft-ietf-ippm-multipoint-alt-mark.all@ietf.org>
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Hi Mirja,
I remember we had a similar discussion also for RFC8321. And I agree with y=
ou, this document is borderline between Experimental and Informational.
Anyway we can keep it Experimental and, as you suggested, we can discuss la=
ter in the process if it is worth to change.
I will submit the new version including the editorial nits early next week.

Regards,

Giuseppe


________________________________

Giuseppe Fioccola
Mobile: +49-15222812418<tel:+49-15222812418>
Email: giuseppe.fioccola@huawei.com<mailto:giuseppe.fioccola@huawei.com>


From: Mirja Kuehlewind<ietf@kuehlewind.net<mailto:ietf@kuehlewind.net>>
To: draft-ietf-ippm-multipoint-alt-mark.all<draft-ietf-ippm-multipoint-alt-=
mark.all@ietf.org<mailto:draft-ietf-ippm-multipoint-alt-mark.all@ietf.org>>
Cc: IETF IPPM WG<ippm@ietf.org<mailto:ippm@ietf.org>>
Subject: AD review of draft-ietf-ippm-multipoint-alt-mark-05
Time: 2020-02-21 16:47:33

Hi authors,

I=92m ready to request IETF last call for this document. However, I have on=
e question I would like to discuss:

Why is this document experimental? I know that RFC8321 is also experimental=
, however, that was probably also a borderline decision but in RFC8321 ther=
e are at last mechanisms that will be implemented in interoperable protocol=
s, while this document really only describes mechanisms that can be applied=
 based on existed singling. Further if something is experimental, it also g=
ood practice to briefly discuss =93what the experiment is=94. However, I do=
n=92t see this approbate here. Therefore for me this document is clearly in=
formational.

As I=92m stepping in March, and we are therefore running a bit out of time,=
 I would like to start IETF last call today no matter what. If you read thi=
s mail in the next hours and agree to change to Informational, please do so=
 right away and submit a new version. Otherwise I will request IETF last ca=
ll anyway later today. Given that experimental and informational have the s=
am maturity level, we can still change the intended status later without ha=
ving to re-do the IETF last call.

Also, as no normative language is used, please remove the Requirements Lang=
uage disclaimer and reference to RFC2119 with the next update.

Find below some minor editorial nits that you may want to address now or in=
 a later version!

Thanks!
Mirja


------
Some editorial nits:

1) Based on the RFC Style Guide RFC7322, you cannot use reference in the ab=
stract. It fine to have an RFC named there, just remove the reference. Furt=
her I actually think the last sentence is probably not needed at all in the=
 abstract.

2) In Intro:
OLD
"The alternate marking method, as presented until now, =85=94
NEW
"The alternate marking method, as described in RFC 8321 [RFC8321], =85=94

3) In Intro:
"Note that additional details about the
   Alternate Marking methodology are described in the paper
   [IEEE-Network-PNPM]=94
Is this sentence really needed? Should the spec in RFC8321 be complete?
(Note that the dot at the end of the sentence is also missing)

4) In Intro:
s/BUM (Broadcast Unknown Unicast Multicast)/BUM (Broadcast, Unknown-unicast=
, and Multicast)/

5) sec 8.2.1:
s/if we would perform a delay measurement/If we would perform a delay measu=
rement/

6) sec 8.2.2:
s/that don't match/that do not match/

9) sec 9
s/flexibility to PM/flexibility to Performance Management (PM)/



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<meta name=3D"Generator" content=3D"Microsoft Exchange Server">
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<div>
<div style=3D"font-family:Calibri,Helvetica!important; font-size:17.0px; co=
lor:#333333">
<span style=3D"color:#333333; font-size:17.0px">Hi&nbsp;Mirja,</span><br>
<span style=3D"color:#333333; font-size:17.0px">I&nbsp;remember&nbsp;we&nbs=
p;had&nbsp;a&nbsp;similar&nbsp;discussion&nbsp;also&nbsp;for&nbsp;RFC8321.&=
nbsp;And&nbsp;I&nbsp;agree&nbsp;with&nbsp;you,&nbsp;this&nbsp;document&nbsp=
;is&nbsp;borderline&nbsp;</span><span style=3D"color:#333333; font-size:17.=
0px">between&nbsp;Experimental&nbsp;and&nbsp;Informational.</span><br>
<span style=3D"color:#333333; font-size:17.0px">Anyway&nbsp;we&nbsp;can&nbs=
p;keep&nbsp;it&nbsp;Experimental&nbsp;and,&nbsp;as&nbsp;you&nbsp;suggested,=
&nbsp;we&nbsp;can&nbsp;discuss&nbsp;later&nbsp;in&nbsp;the&nbsp;process&nbs=
p;if&nbsp;it&nbsp;is&nbsp;worth&nbsp;to&nbsp;change.</span><br>
<span style=3D"color:#333333; font-size:17.0px">I&nbsp;will&nbsp;submit&nbs=
p;the&nbsp;new&nbsp;version&nbsp;including&nbsp;the&nbsp;editorial&nbsp;nit=
s&nbsp;early&nbsp;next&nbsp;week.</span><br>
<br>
<span style=3D"color:#333333; font-size:17.0px">Regards,</span><br>
<br>
<span style=3D"color:#333333; font-size:17.0px">Giuseppe</span><br>
<br>
<br>
<span style=3D"color:#333333; font-size:17.0px">
<hr id=3D"x_client_signature_separator" style=3D"border-top:dotted 1px">
</span><br>
<span style=3D"color:#333333; font-size:17.0px">Giuseppe&nbsp;Fioccola</spa=
n><br>
<span style=3D"color:#333333; font-size:17.0px">Mobile:&nbsp;<a href=3D"tel=
:&#43;49-15222812418" target=3D"_BLANK">&#43;49-15222812418</a>&nbsp;&nbsp;=
</span><br>
<span style=3D"color:#333333; font-size:17.0px">Email:&nbsp;<a href=3D"mail=
to:giuseppe.fioccola@huawei.com" target=3D"_BLANK">giuseppe.fioccola@huawei=
.com</a></span><br>
<br>
<br>
</div>
<div name=3D"x_AnyOffice-Background-Image" style=3D"border-top:1px solid #B=
5C4DF; padding:8px">
<div><b>From: </b>Mirja Kuehlewind&lt;<a href=3D"mailto:ietf@kuehlewind.net=
">ietf@kuehlewind.net</a>&gt;</div>
<div><b>To: </b>draft-ietf-ippm-multipoint-alt-mark.all&lt;<a href=3D"mailt=
o:draft-ietf-ippm-multipoint-alt-mark.all@ietf.org">draft-ietf-ippm-multipo=
int-alt-mark.all@ietf.org</a>&gt;</div>
<div><b>Cc: </b>IETF IPPM WG&lt;<a href=3D"mailto:ippm@ietf.org">ippm@ietf.=
org</a>&gt;</div>
<div><b>Subject: </b>AD review of draft-ietf-ippm-multipoint-alt-mark-05</d=
iv>
<div><b>Time: </b>2020-02-21 16:47:33</div>
<br>
</div>
</div>
<font size=3D"2"><span style=3D"font-size:10pt;">
<div class=3D"PlainText">Hi authors,<br>
<br>
I=92m ready to request IETF last call for this document. However, I have on=
e question I would like to discuss:<br>
<br>
Why is this document experimental? I know that RFC8321 is also experimental=
, however, that was probably also a borderline decision but in RFC8321 ther=
e are at last mechanisms that will be implemented in interoperable protocol=
s, while this document really only
 describes mechanisms that can be applied based on existed singling. Furthe=
r if something is experimental, it also good practice to briefly discuss =
=93what the experiment is=94. However, I don=92t see this approbate here. T=
herefore for me this document is clearly
 informational.&nbsp; <br>
<br>
As I=92m stepping in March, and we are therefore running a bit out of time,=
 I would like to start IETF last call today no matter what. If you read thi=
s mail in the next hours and agree to change to Informational, please do so=
 right away and submit a new version.
 Otherwise I will request IETF last call anyway later today. Given that exp=
erimental and informational have the sam maturity level, we can still chang=
e the intended status later without having to re-do the IETF last call.<br>
<br>
Also, as no normative language is used, please remove the Requirements Lang=
uage disclaimer and reference to RFC2119 with the next update.<br>
<br>
Find below some minor editorial nits that you may want to address now or in=
 a later version!<br>
<br>
Thanks!<br>
Mirja<br>
<br>
<br>
------<br>
Some editorial nits:<br>
<br>
1) Based on the RFC Style Guide RFC7322, you cannot use reference in the ab=
stract. It fine to have an RFC named there, just remove the reference. Furt=
her I actually think the last sentence is probably not needed at all in the=
 abstract.<br>
<br>
2) In Intro:<br>
OLD<br>
&quot;The alternate marking method, as presented until now, =85=94<br>
NEW<br>
&quot;The alternate marking method, as described in RFC 8321 [RFC8321], =85=
=94<br>
<br>
3) In Intro:<br>
&quot;Note that additional details about the<br>
&nbsp;&nbsp; Alternate Marking methodology are described in the paper<br>
&nbsp;&nbsp; [IEEE-Network-PNPM]=94<br>
Is this sentence really needed? Should the spec in RFC8321 be complete?<br>
(Note that the dot at the end of the sentence is also missing)<br>
<br>
4) In Intro:<br>
s/BUM (Broadcast Unknown Unicast Multicast)/BUM (Broadcast, Unknown-unicast=
, and Multicast)/<br>
<br>
5) sec 8.2.1:<br>
s/if we would perform a delay measurement/If we would perform a delay measu=
rement/<br>
<br>
6) sec 8.2.2:<br>
s/that don't match/that do not match/<br>
<br>
9) sec 9<br>
s/flexibility to PM/flexibility to Performance Management (PM)/<br>
<br>
<br>
</div>
</span></font>
</body>
</html>

--_000_3d50c2e8249a4a19885c159517d706b7huaweicom_--


From nobody Fri Feb 21 12:25:31 2020
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From: Mirja Kuehlewind <ietf@kuehlewind.net>
In-Reply-To: <3d50c2e8249a4a19885c159517d706b7@huawei.com>
Date: Fri, 21 Feb 2020 21:25:14 +0100
Cc: "draft-ietf-ippm-multipoint-alt-mark.all" <draft-ietf-ippm-multipoint-alt-mark.all@ietf.org>,  IETF IPPM WG <ippm@ietf.org>
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Subject: Re: [ippm] AD review of draft-ietf-ippm-multipoint-alt-mark-05
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Hi Giuseppe,

Thanks for your quick reply. Okay, I requested IETF last call now.

You can update these nits next week or you can also wait until end of =
IETF last call in two weeks when you have also have feedback from the =
GENART, OPSDIR, and SECDIR reviews. However, it would be good if you can =
prepare these changes and then update immediately when the call is over, =
as we have a bit time pressure here=E2=80=A6

Thanks!
Mirja




> On 21. Feb 2020, at 21:14, Giuseppe Fioccola =
<giuseppe.fioccola@huawei.com> wrote:
>=20
> Hi Mirja,
> I remember we had a similar discussion also for RFC8321. And I agree =
with you, this document is borderline between Experimental and =
Informational.
> Anyway we can keep it Experimental and, as you suggested, we can =
discuss later in the process if it is worth to change.
> I will submit the new version including the editorial nits early next =
week.
>=20
> Regards,
>=20
> Giuseppe
>=20
>=20
>=20
> Giuseppe Fioccola
> Mobile: +49-15222812418 =20
> Email: giuseppe.fioccola@huawei.com
>=20
>=20
> From: Mirja Kuehlewind<ietf@kuehlewind.net>
> To: =
draft-ietf-ippm-multipoint-alt-mark.all<draft-ietf-ippm-multipoint-alt-mar=
k.all@ietf.org>
> Cc: IETF IPPM WG<ippm@ietf.org>
> Subject: AD review of draft-ietf-ippm-multipoint-alt-mark-05
> Time: 2020-02-21 16:47:33
>=20
> Hi authors,
>=20
> I=E2=80=99m ready to request IETF last call for this document. =
However, I have one question I would like to discuss:
>=20
> Why is this document experimental? I know that RFC8321 is also =
experimental, however, that was probably also a borderline decision but =
in RFC8321 there are at last mechanisms that will be implemented in =
interoperable protocols, while this document really only describes =
mechanisms that can be applied based on existed singling. Further if =
something is experimental, it also good practice to briefly discuss =
=E2=80=9Cwhat the experiment is=E2=80=9D. However, I don=E2=80=99t see =
this approbate here. Therefore for me this document is clearly =
informational. =20
>=20
> As I=E2=80=99m stepping in March, and we are therefore running a bit =
out of time, I would like to start IETF last call today no matter what. =
If you read this mail in the next hours and agree to change to =
Informational, please do so right away and submit a new version. =
Otherwise I will request IETF last call anyway later today. Given that =
experimental and informational have the sam maturity level, we can still =
change the intended status later without having to re-do the IETF last =
call.
>=20
> Also, as no normative language is used, please remove the Requirements =
Language disclaimer and reference to RFC2119 with the next update.
>=20
> Find below some minor editorial nits that you may want to address now =
or in a later version!
>=20
> Thanks!
> Mirja
>=20
>=20
> ------
> Some editorial nits:
>=20
> 1) Based on the RFC Style Guide RFC7322, you cannot use reference in =
the abstract. It fine to have an RFC named there, just remove the =
reference. Further I actually think the last sentence is probably not =
needed at all in the abstract.
>=20
> 2) In Intro:
> OLD
> "The alternate marking method, as presented until now, =E2=80=A6=E2=80=9D=

> NEW
> "The alternate marking method, as described in RFC 8321 [RFC8321], =
=E2=80=A6=E2=80=9D
>=20
> 3) In Intro:
> "Note that additional details about the
>    Alternate Marking methodology are described in the paper
>    [IEEE-Network-PNPM]=E2=80=9D
> Is this sentence really needed? Should the spec in RFC8321 be =
complete?
> (Note that the dot at the end of the sentence is also missing)
>=20
> 4) In Intro:
> s/BUM (Broadcast Unknown Unicast Multicast)/BUM (Broadcast, =
Unknown-unicast, and Multicast)/
>=20
> 5) sec 8.2.1:
> s/if we would perform a delay measurement/If we would perform a delay =
measurement/
>=20
> 6) sec 8.2.2:
> s/that don't match/that do not match/
>=20
> 9) sec 9
> s/flexibility to PM/flexibility to Performance Management (PM)/


From nobody Fri Feb 21 12:45:06 2020
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Subject: [ippm] Last Call: <draft-ietf-ippm-multipoint-alt-mark-05.txt> (Multipoint Alternate Marking method for passive and hybrid performance monitoring) to Experimental RFC
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The IESG has received a request from the IP Performance Measurement WG (ippm)
to consider the following document: - 'Multipoint Alternate Marking method
for passive and hybrid performance
   monitoring'
  <draft-ietf-ippm-multipoint-alt-mark-05.txt> as Experimental RFC

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
last-call@ietf.org mailing lists by 2020-03-06. 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


   The Alternate Marking method, as presented in RFC 8321 [RFC8321], can
   be applied only to point-to-point flows because it assumes that all
   the packets of the flow measured on one node are measured again by a
   single second node.  This document aims to generalize and expand this
   methodology to measure any kind of unicast flows, whose packets can
   follow several different paths in the network, in wider terms a
   multipoint-to-multipoint network.  For this reason the technique here
   described is called Multipoint Alternate Marking.  Some definitions
   here introduced extend the scope of RFC 5644 [RFC5644] in the context
   of alternate marking schema.





The file can be obtained via
https://datatracker.ietf.org/doc/draft-ietf-ippm-multipoint-alt-mark/

IESG discussion can be tracked via
https://datatracker.ietf.org/doc/draft-ietf-ippm-multipoint-alt-mark/ballot/

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

   https://datatracker.ietf.org/ipr/4010/
   https://datatracker.ietf.org/ipr/3035/
   https://datatracker.ietf.org/ipr/3110/






From nobody Mon Feb 24 08:37:33 2020
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Subject: [ippm] I-D Action: draft-ietf-ippm-multipoint-alt-mark-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 IP Performance Measurement WG of the IETF.

        Title           : Multipoint Alternate Marking method for passive and hybrid performance monitoring
        Authors         : Giuseppe Fioccola
                          Mauro Cociglio
                          Amedeo Sapio
                          Riccardo Sisto
	Filename        : draft-ietf-ippm-multipoint-alt-mark-06.txt
	Pages           : 22
	Date            : 2020-02-24

Abstract:
   The Alternate Marking method, as presented in RFC 8321, can be
   applied only to point-to-point flows because it assumes that all the
   packets of the flow measured on one node are measured again by a
   single second node.  This document aims to generalize and expand this
   methodology to measure any kind of unicast flows, whose packets can
   follow several different paths in the network, in wider terms a
   multipoint-to-multipoint network.  For this reason the technique here
   described is called Multipoint Alternate Marking.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ippm-multipoint-alt-mark/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-ippm-multipoint-alt-mark-06
https://datatracker.ietf.org/doc/html/draft-ietf-ippm-multipoint-alt-mark-06

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-ippm-multipoint-alt-mark-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: Giuseppe Fioccola <giuseppe.fioccola@huawei.com>
To: Mirja Kuehlewind <ietf@kuehlewind.net>
CC: draft-ietf-ippm-multipoint-alt-mark.all <draft-ietf-ippm-multipoint-alt-mark.all@ietf.org>, IETF IPPM WG <ippm@ietf.org>
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Subject: [ippm] Monitoring metric to detect and locate congestion
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Dear IPPM (and SPRING) participants,

I'm solliciting interest in a new network monitoring metric which allows to=
 detect and locate congested interfaces. Important properties are

  *   Same scalability as ICMP ping in the sense one measurement relation r=
equired per monitored connection
  *   Adds detection and location of congested interfaces as compared to IC=
MP ping (otherwise measured metrics are compatible with ICMP ping)
  *   Requires Segment Routing (which means, measurement on forwarding laye=
r, no other interaction with passed routers - in opposite to ICMP ping)
  *   Active measurement (may be deployed using a single sender&receiver or=
 separate sender and receiver, Segment Routing allows for both options)

I'd be happy to present the draft in Vancouver. If there's community intere=
st. Please read and comment.

You'll find slides at

https://datatracker.ietf.org/meeting/105/materials/slides-105-ippm-14-draft=
-geib-ippm-connectivity-monitoring-00

Draft url:

https://datatracker.ietf.org/doc/draft-geib-ippm-connectivity-monitoring/

Regards,

Ruediger

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<p class=3D"MsoNormal"><span lang=3D"DE">Dear IPPM (and SPRING) participant=
s,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"DE"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal">I&#8217;m solliciting interest in a new network moni=
toring metric which allows to detect and locate congested interfaces. Impor=
tant properties are<o:p></o:p></p>
<ul style=3D"margin-top:0cm" type=3D"disc">
<li class=3D"MsoListParagraph" style=3D"margin-left:0cm;mso-list:l0 level1 =
lfo1">Same scalability as ICMP ping in the sense one measurement relation r=
equired per monitored connection<o:p></o:p></li><li class=3D"MsoListParagra=
ph" style=3D"margin-left:0cm;mso-list:l0 level1 lfo1">Adds detection and lo=
cation of congested interfaces as compared to ICMP ping (otherwise measured=
 metrics are compatible with ICMP ping)<o:p></o:p></li><li class=3D"MsoList=
Paragraph" style=3D"margin-left:0cm;mso-list:l0 level1 lfo1">Requires Segme=
nt Routing (which means, measurement on forwarding layer, no other interact=
ion with passed routers &#8211; in opposite to ICMP ping)<o:p></o:p></li><l=
i class=3D"MsoListParagraph" style=3D"margin-left:0cm;mso-list:l0 level1 lf=
o1">Active measurement (may be deployed using a single sender&amp;receiver =
or separate sender and receiver, Segment Routing allows for both options)<o=
:p></o:p></li></ul>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I&#8217;d be happy to present the draft in Vancouver=
. If there&#8217;s community interest. Please read and comment.<o:p></o:p><=
/p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">You&#8217;ll find slides at &nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"DE"><a href=3D"https://datatracker.iet=
f.org/meeting/105/materials/slides-105-ippm-14-draft-geib-ippm-connectivity=
-monitoring-00"><span lang=3D"EN-US">https://datatracker.ietf.org/meeting/1=
05/materials/slides-105-ippm-14-draft-geib-ippm-connectivity-monitoring-00<=
/span></a></span><o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Draft url:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><a href=3D"https://datatracker.ietf.org/doc/draft-ge=
ib-ippm-connectivity-monitoring/">https://datatracker.ietf.org/doc/draft-ge=
ib-ippm-connectivity-monitoring/</a><o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Regards,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ruediger<o:p></o:p></p>
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From: Robert Raszuk <robert@raszuk.net>
Date: Wed, 26 Feb 2020 10:52:39 +0100
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To: Ruediger.Geib@telekom.de
Cc: ippm-chairs@ietf.org, SPRING WG <spring@ietf.org>, ippm@ietf.org
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Subject: Re: [ippm] [spring] Monitoring metric to detect and locate congestion
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Hi Ruediger,

I have read your draft and presentation with interest as I am a
big supporter and in some lab trials  of end to end network path probing.

Few comments, observations, questions:

You are essentially measuring and comparing delay across N paths traversing
known network topology (I love "network tomography" name !)

* First question - this will likely run on RE/RP and in some platforms path
between LC and RE/RP is completely deterministic and can take 10s or 100s
of ms locally in the router. So right here the proposal to compare anything
may not really work - unless the spec mandates that actually timestamping
is done in hardware on the receiving LC. Then CPU can process it when it
has cycles.

* Second question is that congestion usually has a very transient character
... You would need to be super lucky to find any congestion in normal
network using test probes of any sort. If you have interfaces always
congested then just the queue depth time delta may not be visible in end to
end measurements.

* Third - why not simply look at the queue counters at each node ? Queue
depth, queue history, min, avg, max on a per interface basis offer tons of
information readily available. Why would anyone need to inject loops of
probe packets in known network to detect this ? And in black box unknown
networks this is not going to work as you would not know the network
topology in the first place. Likewise link down/up is already reflected in
your syslog via BFD and IGP alarms. I really do not think you need end to
end protocol to tell you that.

+

s/nodes L100 and L200 one one/nodes L100 and L200 on one/

:)

Many thx,
R.

On Wed, Feb 26, 2020 at 8:55 AM <Ruediger.Geib@telekom.de> wrote:

> Dear IPPM (and SPRING) participants,
>
>
>
> I=E2=80=99m solliciting interest in a new network monitoring metric which=
 allows
> to detect and locate congested interfaces. Important properties are
>
>    - Same scalability as ICMP ping in the sense one measurement relation
>    required per monitored connection
>    - Adds detection and location of congested interfaces as compared to
>    ICMP ping (otherwise measured metrics are compatible with ICMP ping)
>    - Requires Segment Routing (which means, measurement on forwarding
>    layer, no other interaction with passed routers =E2=80=93 in opposite =
to ICMP ping)
>    - Active measurement (may be deployed using a single sender&receiver
>    or separate sender and receiver, Segment Routing allows for both optio=
ns)
>
>
>
> I=E2=80=99d be happy to present the draft in Vancouver.. If there=E2=80=
=99s community
> interest. Please read and comment.
>
>
>
> You=E2=80=99ll find slides at
>
>
>
>
> https://datatracker.ietf.org/meeting/105/materials/slides-105-ippm-14-dra=
ft-geib-ippm-connectivity-monitoring-00
>
>
>
> Draft url:
>
>
>
> https://datatracker.ietf.org/doc/draft-geib-ippm-connectivity-monitoring/
>
>
>
> Regards,
>
>
>
> Ruediger
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>

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<div dir=3D"ltr">Hi Ruediger,<div><br></div><div>I have read your draft=C2=
=A0and presentation with interest as I am a big=C2=A0supporter and in some =
lab trials=C2=A0 of end to end network path probing.=C2=A0</div><div><br></=
div><div>Few comments, observations, questions:=C2=A0</div><div><br></div><=
div>You are essentially measuring and comparing delay across N paths traver=
sing known=C2=A0network topology (I love &quot;network tomography&quot; nam=
e !)</div><div><br></div><div>* First question - this will likely run on RE=
/RP and in some platforms path between LC and RE/RP is completely determini=
stic=C2=A0and can take 10s or 100s of ms locally in the router. So right he=
re the proposal to compare anything may not really work=C2=A0- unless the s=
pec mandates that actually timestamping is done in hardware on the receivin=
g LC. Then CPU can process it when it has cycles.=C2=A0</div><div><br></div=
><div>* Second question is that congestion usually has a very transient cha=
racter ... You would need to be super lucky to find any congestion=C2=A0in =
normal network using test probes of any sort. If you have interfaces always=
 congested then just the queue depth time delta may not be visible in end t=
o end measurements.=C2=A0</div><div><br></div><div>* Third - why not simply=
 look at the queue counters at each node ? Queue depth, queue history, min,=
 avg, max on a per interface basis offer tons of information readily availa=
ble. Why would anyone need to inject loops of probe packets in known networ=
k to detect this ? And in black box unknown networks this is not going to w=
ork as you would not know the network topology in the first place. Likewise=
 link down/up is already reflected in your syslog via BFD and IGP alarms. I=
 really do not think you need end to end protocol to tell you that.=C2=A0</=
div><div><br></div><div>+=C2=A0<br></div><div><br></div><div>s/<span style=
=3D"background-color:rgb(255,253,245);color:rgb(0,0,0);font-family:&quot;PT=
 Mono&quot;,Monaco,monospace;font-size:14px">nodes L100 and L200 one one/</=
span><span style=3D"background-color:rgb(255,253,245);color:rgb(0,0,0);font=
-family:&quot;PT Mono&quot;,Monaco,monospace;font-size:14px">nodes L100 and=
 L200 on one/=C2=A0=C2=A0</span></div><div><span style=3D"background-color:=
rgb(255,253,245);color:rgb(0,0,0);font-family:&quot;PT Mono&quot;,Monaco,mo=
nospace;font-size:14px"><br></span></div><div><span style=3D"background-col=
or:rgb(255,253,245);color:rgb(0,0,0);font-family:&quot;PT Mono&quot;,Monaco=
,monospace;font-size:14px">:)=C2=A0</span></div><div><br></div><div>Many th=
x,</div><div>R.</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" =
class=3D"gmail_attr">On Wed, Feb 26, 2020 at 8:55 AM &lt;<a href=3D"mailto:=
Ruediger.Geib@telekom.de">Ruediger.Geib@telekom.de</a>&gt; wrote:<br></div>=
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex">





<div lang=3D"EN-US">
<div>
<p class=3D"MsoNormal"><span lang=3D"DE">Dear IPPM (and SPRING) participant=
s,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"DE"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal">I=E2=80=99m solliciting interest in a new network mo=
nitoring metric which allows to detect and locate congested interfaces. Imp=
ortant properties are<u></u><u></u></p>
<ul style=3D"margin-top:0cm" type=3D"disc">
<li style=3D"margin-left:0cm">Same scalability as ICMP ping in the sense on=
e measurement relation required per monitored connection<u></u><u></u></li>=
<li style=3D"margin-left:0cm">Adds detection and location of congested inte=
rfaces as compared to ICMP ping (otherwise measured metrics are compatible =
with ICMP ping)<u></u><u></u></li><li style=3D"margin-left:0cm">Requires Se=
gment Routing (which means, measurement on forwarding layer, no other inter=
action with passed routers =E2=80=93 in opposite to ICMP ping)<u></u><u></u=
></li><li style=3D"margin-left:0cm">Active measurement (may be deployed usi=
ng a single sender&amp;receiver or separate sender and receiver, Segment Ro=
uting allows for both options)<u></u><u></u></li></ul>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">I=E2=80=99d be happy to present the draft in Vancouv=
er.. If there=E2=80=99s community interest. Please read and comment.<u></u>=
<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">You=E2=80=99ll find slides at =C2=A0<u></u><u></u></=
p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><span lang=3D"DE"><a href=3D"https://datatracker.iet=
f.org/meeting/105/materials/slides-105-ippm-14-draft-geib-ippm-connectivity=
-monitoring-00" target=3D"_blank"><span lang=3D"EN-US">https://datatracker.=
ietf.org/meeting/105/materials/slides-105-ippm-14-draft-geib-ippm-connectiv=
ity-monitoring-00</span></a></span><u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Draft url:<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><a href=3D"https://datatracker.ietf.org/doc/draft-ge=
ib-ippm-connectivity-monitoring/" target=3D"_blank">https://datatracker.iet=
f.org/doc/draft-geib-ippm-connectivity-monitoring/</a><u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Ruediger<u></u><u></u></p>
</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>

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Thread-Topic: [spring] Monitoring metric to detect and locate congestion
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Subject: Re: [ippm] [spring] Monitoring metric to detect and locate congestion
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From: Robert Raszuk <robert@raszuk.net>
Date: Wed, 26 Feb 2020 14:19:29 +0100
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To: Ruediger.Geib@telekom.de
Cc: ippm-chairs@ietf.org, SPRING WG <spring@ietf.org>, ippm@ietf.org
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Subject: Re: [ippm] [spring] Monitoring metric to detect and locate congestion
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Hi,

Two clarifications:

[RG1] the measurements pass the routers on forwarding plane.

Well if I have 20K CEs and would like to measure this end to end that means
it better run on a router ... I can not envision installing 20K new PCs
just for this. At min such end point it should run on a well designed CPE
as an LXC.

[RG1] Up to now, the conditions in Deutsche Telekom=E2=80=99s backbone netw=
ork
require a careful design of router probing interval and counters to be
read.

Sure. I actually had in mind telemetry push model where you only get
notified to yr monitoring station when applied queue threshold is crossed.
Very little mgmt traffic in the network limited to only information which
is important.

I know some vendors resist to locally (at LC or local RE) apply filtering
to telemetry streaming but this is IMHO just sick approach.

Thx,
R.





On Wed, Feb 26, 2020 at 12:01 PM <Ruediger.Geib@telekom.de> wrote:

> Hi Robert,
>
>
>
> Thanks, my replies in line marked [RG1]
>
>
>
> I have read your draft and presentation with interest as I am a
> big supporter and in some lab trials  of end to end network path probing.
>
>
>
> Few comments, observations, questions:
>
>
>
> You are essentially measuring and comparing delay across N paths
> traversing known network topology (I love "network tomography" name !)
>
>
>
> [RG1] it=E2=80=99s telemetry with a constrained set up, but the term does=
n=E2=80=99t
> appear in the draft yet=E2=80=A6that can be changed.
>
>
>
> ------
>
> * First question - this will likely run on RE/RP and in some platforms
> path between LC and RE/RP is completely deterministic and can take 10s or
> 100s of ms locally in the router. So right here the proposal to compare
> anything may not really work - unless the spec mandates that actually
> timestamping is done in hardware on the receiving LC. Then CPU can proces=
s
> it when it has cycles.
>
>
>
> [RG1] the measurements pass the routers on forwarding plane. High-end
> routers add variable processing latencies. It=E2=80=99s on a level of dou=
ble or
> lower triple digit [us] on Deutsche Telekom backbone routers. If a
> dedicated sender receiver system is used, timestamping may be optimized f=
or
> the purpose.
>
> ------
>
>
>
> * Second question is that congestion usually has a very transient
> character ... You would need to be super lucky to find any congestion in
> normal network using test probes of any sort. If you have interfaces alwa=
ys
> congested then just the queue depth time delta may not be visible in end =
to
> end measurements.
>
>
>
> [RG1] The probing frequency depends on the characteristics of congestion
> the operator wants to be aware of. Unplanned events may cause changes in
> measurement delays lasting for minutes or longer (congestion or hardware
> issues). The duration of a reliably detectable =E2=80=9Cevent=E2=80=9D co=
rrespond to the
> measurement packet distance (I don=E2=80=99t intend to replace hello-exch=
anges or
> BFD by the metric).
>
> ------
>
>
>
> * Third - why not simply look at the queue counters at each node ? Queue
> depth, queue history, min, avg, max on a per interface basis offer tons o=
f
> information readily available. Why would anyone need to inject loops of
> probe packets in known network to detect this ? And in black box unknown
> networks this is not going to work as you would not know the network
> topology in the first place. Likewise link down/up is already reflected i=
n
> your syslog via BFD and IGP alarms. I really do not think you need end to
> end protocol to tell you that.
>
>
>
> [RG1] Up to now, the conditions in Deutsche Telekom=E2=80=99s backbone ne=
twork
> require a careful design of router probing interval and counters to be
> read. The proposed metric allows to capture persistent issues impacting
> forwarding. It points out, where these likely occur. An operator may then
> have a closer look at an interface/router to analyse what=E2=80=99s going=
 on, using
> the full arsenal of accessible information and tools. As unusual events
> happen rarely, it may still be a fair question for which purpose linecard=
-
> and central processing cycles of routers are consumed.
>
> -------
>
> + Thanks for catching the nit below..
>
>
>
> Regards, Ruediger
>
>
>
> s/nodes L100 and L200 one one/nodes L100 and L200 on one/
>
>
>
> :)
>
>
>
> Many thx,
>
> R.
>
>
>
> On Wed, Feb 26, 2020 at 8:55 AM <Ruediger.Geib@telekom.de> wrote:
>
> Dear IPPM (and SPRING) participants,
>
>
>
> I=E2=80=99m solliciting interest in a new network monitoring metric which=
 allows
> to detect and locate congested interfaces. Important properties are
>
>    - Same scalability as ICMP ping in the sense one measurement relation
>    required per monitored connection
>    - Adds detection and location of congested interfaces as compared to
>    ICMP ping (otherwise measured metrics are compatible with ICMP ping)
>    - Requires Segment Routing (which means, measurement on forwarding
>    layer, no other interaction with passed routers =E2=80=93 in opposite =
to ICMP ping)
>    - Active measurement (may be deployed using a single sender&receiver
>    or separate sender and receiver, Segment Routing allows for both optio=
ns)
>
>
>
> I=E2=80=99d be happy to present the draft in Vancouver.. If there=E2=80=
=99s community
> interest. Please read and comment.
>
>
>
> You=E2=80=99ll find slides at
>
>
>
>
> https://datatracker.ietf.org/meeting/105/materials/slides-105-ippm-14-dra=
ft-geib-ippm-connectivity-monitoring-00
>
>
>
> Draft url:
>
>
>
> https://datatracker.ietf.org/doc/draft-geib-ippm-connectivity-monitoring/
>
>
>
> Regards,
>
>
>
> Ruediger
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
>

--000000000000ff4473059f7a7424
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi,<div><br></div><div>Two clarifications:=C2=A0</div><div=
><br></div><div>[RG1] the measurements pass the routers on forwarding plane=
.=C2=A0</div><div><br></div><div>Well if I have 20K CEs and would like to m=
easure this end to end that means it better run on a router ... I can not e=
nvision installing 20K new PCs just for this. At min such end point it shou=
ld run on a well designed CPE as an LXC.=C2=A0=C2=A0<br></div><div><br></di=
v><div>[RG1] Up to now, the conditions in Deutsche Telekom=E2=80=99s backbo=
ne network require a careful design of router probing interval and counters=
 to be read.=C2=A0</div><div><br></div><div>Sure. I actually had in mind te=
lemetry push model where you only get notified to yr monitoring station whe=
n applied queue threshold=C2=A0is crossed. Very little mgmt traffic in the =
network limited to only information which is important.=C2=A0</div><div><br=
></div><div>I know some vendors resist to locally (at LC or local RE) apply=
 filtering to telemetry streaming but this is IMHO just sick approach.=C2=
=A0</div><div><br></div><div>Thx,</div><div>R.</div><div><br></div><div><br=
></div><div>=C2=A0<br></div><div><br></div></div><br><div class=3D"gmail_qu=
ote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Feb 26, 2020 at 12:01 PM=
 &lt;<a href=3D"mailto:Ruediger.Geib@telekom.de">Ruediger.Geib@telekom.de</=
a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0p=
x 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">





<div lang=3D"EN-US">
<div class=3D"gmail-m_3300371698356150918WordSection1">
<p class=3D"MsoNormal">Hi Robert,<u></u><u></u></p>
<p class=3D"MsoNormal"><b><span lang=3D"DE"><u></u>=C2=A0<u></u></span></b>=
</p>
<p class=3D"MsoNormal">Thanks, my replies in line marked [RG1]<u></u><u></u=
></p>
<div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">I have read your draft=C2=A0and presentation with in=
terest as I am a big=C2=A0supporter and in some lab trials=C2=A0 of end to =
end network path probing.=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">Few comments, observations, questions:=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">You are essentially measuring and comparing delay ac=
ross N paths traversing known=C2=A0network topology (I love &quot;network t=
omography&quot; name !)<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">[RG1] it=E2=80=99s telemetry with a constrained set =
up, but the term doesn=E2=80=99t appear in the draft yet=E2=80=A6that can b=
e changed.
<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">------<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">* First question - this will likely run on RE/RP and=
 in some platforms path between LC and RE/RP is completely deterministic=C2=
=A0and can take 10s or 100s of ms locally in the router. So right here the =
proposal to compare anything may not really
 work=C2=A0- unless the spec mandates that actually timestamping is done in=
 hardware on the receiving LC. Then CPU can process it when it has cycles.=
=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">[RG1] the measurements pass the routers on forwardin=
g plane. High-end routers add variable processing latencies. It=E2=80=99s o=
n a level of double or lower triple digit [us] on Deutsche Telekom backbone=
 routers. If a dedicated sender receiver system
 is used, timestamping may be optimized for the purpose. <u></u><u></u></p>
<p class=3D"MsoNormal">------<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">* Second question is that congestion usually has a v=
ery transient character ... You would need to be super lucky to find any co=
ngestion=C2=A0in normal network using test probes of any sort. If you have =
interfaces always congested then just the
 queue depth time delta may not be visible in end to end measurements.<u></=
u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">[RG1] The probing frequency depends on the character=
istics of congestion the operator wants to be aware of. Unplanned events ma=
y cause changes in measurement delays lasting for minutes or longer (conges=
tion or hardware issues). The duration
 of a reliably detectable =E2=80=9Cevent=E2=80=9D correspond to the measure=
ment packet distance (I don=E2=80=99t intend to replace hello-exchanges or =
BFD by the metric).
<u></u><u></u></p>
<p class=3D"MsoNormal">------=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">* Third - why not simply look at the queue counters =
at each node ? Queue depth, queue history, min, avg, max on a per interface=
 basis offer tons of information readily available. Why would anyone need t=
o inject loops of probe packets in
 known network to detect this ? And in black box unknown networks this is n=
ot going to work as you would not know the network topology in the first pl=
ace. Likewise link down/up is already reflected in your syslog via BFD and =
IGP alarms. I really do not think
 you need end to end protocol to tell you that.=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">[RG1] Up to now, the conditions in Deutsche Telekom=
=E2=80=99s backbone network require a careful design of router probing inte=
rval and counters to be read. The proposed metric allows to capture persist=
ent issues impacting forwarding. It points
 out, where these likely occur. An operator may then have a closer look at =
an interface/router to analyse what=E2=80=99s going on, using the full arse=
nal of accessible information and tools. As unusual events happen rarely, i=
t may still be a fair question for which
 purpose linecard- and central processing cycles of routers are consumed. <=
u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">-------<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">+=C2=A0Thanks for catching the nit below..<u></u><u>=
</u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Regards, Ruediger<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">s/<span style=3D"font-size:10.5pt;font-family:&quot;=
Courier New&quot;;color:black;background:rgb(255,253,245)">nodes L100 and L=
200 one one/nodes L100 and L200 on one/=C2=A0=C2=A0</span><u></u><u></u></p=
>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Co=
urier New&quot;;color:black;background:rgb(255,253,245)">:)=C2=A0</span><u>=
</u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Many thx,<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 Wed, Feb 26, 2020 at 8:55 AM &lt;<a href=3D"mailt=
o:Ruediger.Geib@telekom.de" target=3D"_blank">Ruediger.Geib@telekom.de</a>&=
gt; wrote:<u></u><u></u></p>
</div>
<blockquote style=3D"border-top:none;border-right:none;border-bottom:none;b=
order-left:1pt solid rgb(204,204,204);padding:0cm 0cm 0cm 6pt;margin-left:4=
.8pt;margin-right:0cm">
<div>
<div>
<p class=3D"MsoNormal"><span lang=3D"DE">Dear IPPM (and SPRING) participant=
s,</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span lang=3D"DE">=C2=A0</span><u></u><u></u></p>
<p class=3D"MsoNormal">I=E2=80=99m solliciting interest in a new network mo=
nitoring metric which allows to detect and locate congested interfaces. Imp=
ortant properties are<u></u><u></u></p>
<ul type=3D"disc">
<li class=3D"MsoNormal">
Same scalability as ICMP ping in the sense one measurement relation require=
d per monitored connection<u></u><u></u></li><li class=3D"MsoNormal">
Adds detection and location of congested interfaces as compared to ICMP pin=
g (otherwise measured metrics are compatible with ICMP ping)<u></u><u></u><=
/li><li class=3D"MsoNormal">
Requires Segment Routing (which means, measurement on forwarding layer, no =
other interaction with passed routers =E2=80=93 in opposite to ICMP ping)<u=
></u><u></u></li><li class=3D"MsoNormal">
Active measurement (may be deployed using a single sender&amp;receiver or s=
eparate sender and receiver, Segment Routing allows for both options)<u></u=
><u></u></li></ul>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">I=E2=80=99d be happy to present the draft in Vancouv=
er.. If there=E2=80=99s community interest. Please read and comment.<u></u>=
<u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">You=E2=80=99ll find slides at =C2=A0<u></u><u></u></=
p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal"><span lang=3D"DE"><a href=3D"https://datatracker.iet=
f.org/meeting/105/materials/slides-105-ippm-14-draft-geib-ippm-connectivity=
-monitoring-00" target=3D"_blank"><span lang=3D"EN-US">https://datatracker.=
ietf.org/meeting/105/materials/slides-105-ippm-14-draft-geib-ippm-connectiv=
ity-monitoring-00</span></a></span><u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Draft url:<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal"><a href=3D"https://datatracker.ietf.org/doc/draft-ge=
ib-ippm-connectivity-monitoring/" target=3D"_blank">https://datatracker.iet=
f.org/doc/draft-geib-ippm-connectivity-monitoring/</a><u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Ruediger<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal">_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" target=3D"_blank">=
https://www.ietf.org/mailman/listinfo/spring</a><u></u><u></u></p>
</blockquote>
</div>
</div>
</div>

</blockquote></div>

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Subject: Re: [ippm] [spring] Monitoring metric to detect and locate congestion
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From: Robert Raszuk <robert@raszuk.net>
Date: Thu, 27 Feb 2020 10:38:17 +0100
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To: Ruediger.Geib@telekom.de
Cc: ippm-chairs@ietf.org, SPRING WG <spring@ietf.org>, ippm@ietf.org
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Subject: Re: [ippm] [spring] Monitoring metric to detect and locate congestion
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Hi,

As I mentioned in my first mail I am a big supporter of end to end path
measurement - mainly have been focusing on hop by hop timestamping
approach.

So my comments were not really to discourage in any way end to end path
probing - it is extremely useful. They were just to see your point of view
on alternative options just for the specific goal here - congestion
detection.

Will be watching how your proposal evolves with interest !

Cheers,
R.

On Thu, Feb 27, 2020 at 9:17 AM <Ruediger.Geib@telekom.de> wrote:

> Hi Robert,
>
>
>
> regarding scalability, I hope the difference between our positions is jus=
t
> whether it=E2=80=99s a router or a dedicated CPE. I don=E2=80=99t promote=
 deploying 20k PCs
> (I hope to promote a metric to replace them). I prefer the dedicated CPE,
> but routers do as well.
>
>
>
> The telemetry threshold might be an option too, if congestion is to be
> detected. In September last year, we had to replace a line card at a
> production router, whose ingress port hardware was corrupted. There were =
no
> drops, just random delay variations, which showed in our performance
> measurement system. I wonder whether problems like that can be detected b=
y
> evaluating telemetry.
>
> Further, telemetry needs to work reliable if the router hardware is busy
> dealing with heavy loads (i.e., telemetry must be sufficiently privileged=
).
> External measurements on forwarding layer don=E2=80=99t rely on router in=
ternal
> processing resources.
>
>
>
> Regards,
>
>
>
> Ruediger
>
>
>
>
>
> *Von:* Robert Raszuk <robert@raszuk.net>
> *Gesendet:* Mittwoch, 26. Februar 2020 14:19
> *An:* Geib, R=C3=BCdiger <Ruediger.Geib@telekom.de>
> *Cc:* ippm-chairs@ietf.org; SPRING WG <spring@ietf.org>; ippm@ietf.org
> *Betreff:* Re: [spring] Monitoring metric to detect and locate congestion
>
>
>
> Hi,
>
>
>
> Two clarifications:
>
>
>
> [RG1] the measurements pass the routers on forwarding plane.
>
>
>
> Well if I have 20K CEs and would like to measure this end to end that
> means it better run on a router ... I can not envision installing 20K new
> PCs just for this. At min such end point it should run on a well designed
> CPE as an LXC.
>
>
>
> [RG1] Up to now, the conditions in Deutsche Telekom=E2=80=99s backbone ne=
twork
> require a careful design of router probing interval and counters to be
> read.
>
>
>
> Sure. I actually had in mind telemetry push model where you only get
> notified to yr monitoring station when applied queue threshold is crossed=
.
> Very little mgmt traffic in the network limited to only information which
> is important.
>
>
>
> I know some vendors resist to locally (at LC or local RE) apply filtering
> to telemetry streaming but this is IMHO just sick approach.
>
>
>
> Thx,
>
> R.
>
>
>
>
>
>
>
>
>
>
>
> On Wed, Feb 26, 2020 at 12:01 PM <Ruediger.Geib@telekom.de> wrote:
>
> Hi Robert,
>
>
>
> Thanks, my replies in line marked [RG1]
>
>
>
> I have read your draft and presentation with interest as I am a
> big supporter and in some lab trials  of end to end network path probing.
>
>
>
> Few comments, observations, questions:
>
>
>
> You are essentially measuring and comparing delay across N paths
> traversing known network topology (I love "network tomography" name !)
>
>
>
> [RG1] it=E2=80=99s telemetry with a constrained set up, but the term does=
n=E2=80=99t
> appear in the draft yet=E2=80=A6that can be changed.
>
>
>
> ------
>
> * First question - this will likely run on RE/RP and in some platforms
> path between LC and RE/RP is completely deterministic and can take 10s or
> 100s of ms locally in the router. So right here the proposal to compare
> anything may not really work - unless the spec mandates that actually
> timestamping is done in hardware on the receiving LC. Then CPU can proces=
s
> it when it has cycles.
>
>
>
> [RG1] the measurements pass the routers on forwarding plane. High-end
> routers add variable processing latencies. It=E2=80=99s on a level of dou=
ble or
> lower triple digit [us] on Deutsche Telekom backbone routers. If a
> dedicated sender receiver system is used, timestamping may be optimized f=
or
> the purpose.
>
> ------
>
>
>
> * Second question is that congestion usually has a very transient
> character ... You would need to be super lucky to find any congestion in
> normal network using test probes of any sort. If you have interfaces alwa=
ys
> congested then just the queue depth time delta may not be visible in end =
to
> end measurements.
>
>
>
> [RG1] The probing frequency depends on the characteristics of congestion
> the operator wants to be aware of. Unplanned events may cause changes in
> measurement delays lasting for minutes or longer (congestion or hardware
> issues). The duration of a reliably detectable =E2=80=9Cevent=E2=80=9D co=
rrespond to the
> measurement packet distance (I don=E2=80=99t intend to replace hello-exch=
anges or
> BFD by the metric).
>
> ------
>
>
>
> * Third - why not simply look at the queue counters at each node ? Queue
> depth, queue history, min, avg, max on a per interface basis offer tons o=
f
> information readily available. Why would anyone need to inject loops of
> probe packets in known network to detect this ? And in black box unknown
> networks this is not going to work as you would not know the network
> topology in the first place. Likewise link down/up is already reflected i=
n
> your syslog via BFD and IGP alarms. I really do not think you need end to
> end protocol to tell you that.
>
>
>
> [RG1] Up to now, the conditions in Deutsche Telekom=E2=80=99s backbone ne=
twork
> require a careful design of router probing interval and counters to be
> read. The proposed metric allows to capture persistent issues impacting
> forwarding. It points out, where these likely occur. An operator may then
> have a closer look at an interface/router to analyse what=E2=80=99s going=
 on, using
> the full arsenal of accessible information and tools. As unusual events
> happen rarely, it may still be a fair question for which purpose linecard=
-
> and central processing cycles of routers are consumed.
>
> -------
>
> + Thanks for catching the nit below..
>
>
>
> Regards, Ruediger
>
>
>
> s/nodes L100 and L200 one one/nodes L100 and L200 on one/
>
>
>
> :)
>
>
>
> Many thx,
>
> R.
>
>
>
> On Wed, Feb 26, 2020 at 8:55 AM <Ruediger.Geib@telekom.de> wrote:
>
> Dear IPPM (and SPRING) participants,
>
>
>
> I=E2=80=99m solliciting interest in a new network monitoring metric which=
 allows
> to detect and locate congested interfaces. Important properties are
>
>    - Same scalability as ICMP ping in the sense one measurement relation
>    required per monitored connection
>    - Adds detection and location of congested interfaces as compared to
>    ICMP ping (otherwise measured metrics are compatible with ICMP ping)
>    - Requires Segment Routing (which means, measurement on forwarding
>    layer, no other interaction with passed routers =E2=80=93 in opposite =
to ICMP ping)
>    - Active measurement (may be deployed using a single sender&receiver
>    or separate sender and receiver, Segment Routing allows for both optio=
ns)
>
>
>
> I=E2=80=99d be happy to present the draft in Vancouver.. If there=E2=80=
=99s community
> interest. Please read and comment.
>
>
>
> You=E2=80=99ll find slides at
>
>
>
>
> https://datatracker.ietf.org/meeting/105/materials/slides-105-ippm-14-dra=
ft-geib-ippm-connectivity-monitoring-00
>
>
>
> Draft url:
>
>
>
> https://datatracker.ietf.org/doc/draft-geib-ippm-connectivity-monitoring/
>
>
>
> Regards,
>
>
>
> Ruediger
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
>

--000000000000a491fe059f8b7b47
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi,<div><br></div><div>As I mentioned in my first mail I a=
m a big supporter=C2=A0of end to end path measurement - mainly have been fo=
cusing on hop by hop timestamping approach.=C2=A0</div><div><br></div><div>=
So my comments were not really to discourage in any way end to end path pro=
bing - it is extremely useful. They were just to see your point of view on =
alternative options just for the specific goal here - congestion detection.=
=C2=A0</div><div><br></div><div>Will be watching how your proposal evolves =
with interest !</div><div><br></div><div>Cheers,<br>R.</div></div><br><div =
class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Feb 27,=
 2020 at 9:17 AM &lt;<a href=3D"mailto:Ruediger.Geib@telekom.de">Ruediger.G=
eib@telekom.de</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" st=
yle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padd=
ing-left:1ex">





<div lang=3D"EN-US">
<div class=3D"gmail-m_173814448422667427WordSection1">
<p class=3D"MsoNormal">Hi Robert,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">regarding scalability, I hope the difference between=
 our positions is just whether it=E2=80=99s a router or a dedicated CPE. I =
don=E2=80=99t promote deploying 20k PCs (I hope to promote a metric to repl=
ace them). I prefer the dedicated CPE, but routers
 do as well.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">The telemetry threshold might be an option too, if c=
ongestion is to be detected. In September last year, we had to replace a li=
ne card at a production router, whose ingress port hardware was corrupted. =
There were no drops, just random delay
 variations, which showed in our performance measurement system. I wonder w=
hether problems like that can be detected by evaluating telemetry.
<u></u><u></u></p>
<p class=3D"MsoNormal">Further, telemetry needs to work reliable if the rou=
ter hardware is busy dealing with heavy loads (i.e., telemetry must be suff=
iciently privileged). External measurements on forwarding layer don=E2=80=
=99t rely on router internal processing resources.
<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Ruediger<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><b><span lang=3D"DE">Von:</span></b><span lang=3D"DE=
"> Robert Raszuk &lt;<a href=3D"mailto:robert@raszuk.net" target=3D"_blank"=
>robert@raszuk.net</a>&gt;
<br>
<b>Gesendet:</b> Mittwoch, 26. Februar 2020 14:19<br>
<b>An:</b> Geib, R=C3=BCdiger &lt;<a href=3D"mailto:Ruediger.Geib@telekom.d=
e" target=3D"_blank">Ruediger.Geib@telekom.de</a>&gt;<br>
<b>Cc:</b> <a href=3D"mailto:ippm-chairs@ietf.org" target=3D"_blank">ippm-c=
hairs@ietf.org</a>; SPRING WG &lt;<a href=3D"mailto:spring@ietf.org" target=
=3D"_blank">spring@ietf.org</a>&gt;; <a href=3D"mailto:ippm@ietf.org" targe=
t=3D"_blank">ippm@ietf.org</a><br>
<b>Betreff:</b> Re: [spring] Monitoring metric to detect and locate congest=
ion<u></u><u></u></span></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">Hi,<u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Two clarifications:=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">[RG1] the measurements pass the routers on forwardin=
g plane.=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Well if I have 20K CEs and would like to measure thi=
s end to end that means it better run on a router ... I can not envision in=
stalling 20K new PCs just for this. At min such end point it should run on =
a well designed CPE as an LXC.=C2=A0=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">[RG1] Up to now, the conditions in Deutsche Telekom=
=E2=80=99s backbone network require a careful design of router probing inte=
rval and counters to be read.=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">Sure. I actually had in mind telemetry push model wh=
ere you only get notified to yr monitoring station when applied queue thres=
hold=C2=A0is crossed. Very little mgmt traffic in the network limited to on=
ly information which is important.=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">I know some vendors resist to locally (at LC or loca=
l RE) apply filtering to telemetry streaming but this is IMHO just sick app=
roach.=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">Thx,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">R.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=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"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal">On Wed, Feb 26, 2020 at 12:01 PM &lt;<a href=3D"mail=
to:Ruediger.Geib@telekom.de" target=3D"_blank">Ruediger.Geib@telekom.de</a>=
&gt; wrote:<u></u><u></u></p>
</div>
<blockquote style=3D"border-top:none;border-right:none;border-bottom:none;b=
order-left:1pt solid rgb(204,204,204);padding:0cm 0cm 0cm 6pt;margin-left:4=
.8pt;margin-right:0cm">
<div>
<div>
<p class=3D"MsoNormal">Hi Robert,<u></u><u></u></p>
<p class=3D"MsoNormal"><b><span lang=3D"DE">=C2=A0</span></b><u></u><u></u>=
</p>
<p class=3D"MsoNormal">Thanks, my replies in line marked [RG1]<u></u><u></u=
></p>
<div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">I have read your draft=C2=A0and presentation with in=
terest as I am a big=C2=A0supporter and in some lab trials=C2=A0 of end to =
end network path probing.=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Few comments, observations, questions:=C2=A0<u></u><=
u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">You are essentially measuring and comparing delay ac=
ross N paths traversing known=C2=A0network topology (I love &quot;network t=
omography&quot; name !)<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">[RG1] it=E2=80=99s telemetry with a constrained set =
up, but the term doesn=E2=80=99t appear in the draft yet=E2=80=A6that can b=
e changed.
<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">------<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">* First question - this will likely run on RE/RP and=
 in some platforms path between LC and RE/RP is completely deterministic=C2=
=A0and can take 10s or 100s of ms locally in the router.
 So right here the proposal to compare anything may not really work=C2=A0- =
unless the spec mandates that actually timestamping is done in hardware on =
the receiving LC. Then CPU can process it when it has cycles.=C2=A0<u></u><=
u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">[RG1] the measurements pass the routers on forwardin=
g plane. High-end routers add variable processing latencies. It=E2=80=99s o=
n a level of double or lower triple digit [us] on Deutsche
 Telekom backbone routers. If a dedicated sender receiver system is used, t=
imestamping may be optimized for the purpose.
<u></u><u></u></p>
<p class=3D"MsoNormal">------<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">* Second question is that congestion usually has a v=
ery transient character ... You would need to be super lucky to find any co=
ngestion=C2=A0in normal network using test probes of any
 sort. If you have interfaces always congested then just the queue depth ti=
me delta may not be visible in end to end measurements.<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">[RG1] The probing frequency depends on the character=
istics of congestion the operator wants to be aware of. Unplanned events ma=
y cause changes in measurement delays lasting for
 minutes or longer (congestion or hardware issues). The duration of a relia=
bly detectable =E2=80=9Cevent=E2=80=9D correspond to the measurement packet=
 distance (I don=E2=80=99t intend to replace hello-exchanges or BFD by the =
metric).
<u></u><u></u></p>
<p class=3D"MsoNormal">------=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">* Third - why not simply look at the queue counters =
at each node ? Queue depth, queue history, min, avg, max on a per interface=
 basis offer tons of information readily available.
 Why would anyone need to inject loops of probe packets in known network to=
 detect this ? And in black box unknown networks this is not going to work =
as you would not know the network topology in the first place. Likewise lin=
k down/up is already reflected in
 your syslog via BFD and IGP alarms. I really do not think you need end to =
end protocol to tell you that.=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">[RG1] Up to now, the conditions in Deutsche Telekom=
=E2=80=99s backbone network require a careful design of router probing inte=
rval and counters to be read. The proposed metric allows to
 capture persistent issues impacting forwarding. It points out, where these=
 likely occur. An operator may then have a closer look at an interface/rout=
er to analyse what=E2=80=99s going on, using the full arsenal of accessible=
 information and tools. As unusual events
 happen rarely, it may still be a fair question for which purpose linecard-=
 and central processing cycles of routers are consumed.
<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">-------<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">+=C2=A0Thanks for catching the nit below..<u></u><u>=
</u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Regards, Ruediger<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">s/<span style=3D"font-size:10.5pt;font-family:&quot;=
Courier New&quot;;color:black;background:rgb(255,253,245)">nodes L100 and L=
200 one one/nodes L100 and L200 on one/=C2=A0=C2=A0</span><u></u><u></u></p=
>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Co=
urier New&quot;;color:black;background:rgb(255,253,245)">:)=C2=A0</span><u>=
</u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Many thx,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">R.<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<div>
<div>
<p class=3D"MsoNormal">On Wed, Feb 26, 2020 at 8:55 AM &lt;<a href=3D"mailt=
o:Ruediger.Geib@telekom.de" target=3D"_blank">Ruediger.Geib@telekom.de</a>&=
gt; wrote:<u></u><u></u></p>
</div>
<blockquote style=3D"border-top:none;border-right:none;border-bottom:none;b=
order-left:1pt solid rgb(204,204,204);padding:0cm 0cm 0cm 6pt;margin:5pt 0c=
m 5pt 4.8pt">
<div>
<div>
<p class=3D"MsoNormal"><span lang=3D"DE">Dear IPPM (and SPRING) participant=
s,</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span lang=3D"DE">=C2=A0</span><u></u><u></u></p>
<p class=3D"MsoNormal">I=E2=80=99m solliciting interest in a new network mo=
nitoring metric which allows to detect and locate congested interfaces. Imp=
ortant properties are<u></u><u></u></p>
<ul type=3D"disc">
<li class=3D"MsoNormal">
Same scalability as ICMP ping in the sense one measurement relation require=
d per monitored connection<u></u><u></u></li><li class=3D"MsoNormal">
Adds detection and location of congested interfaces as compared to ICMP pin=
g (otherwise measured metrics are compatible with ICMP ping)<u></u><u></u><=
/li><li class=3D"MsoNormal">
Requires Segment Routing (which means, measurement on forwarding layer, no =
other interaction with passed routers =E2=80=93 in opposite to ICMP ping)<u=
></u><u></u></li><li class=3D"MsoNormal">
Active measurement (may be deployed using a single sender&amp;receiver or s=
eparate sender and receiver, Segment Routing allows for both options)<u></u=
><u></u></li></ul>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">I=E2=80=99d be happy to present the draft in Vancouv=
er.. If there=E2=80=99s community interest. Please read and comment.<u></u>=
<u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">You=E2=80=99ll find slides at =C2=A0<u></u><u></u></=
p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal"><span lang=3D"DE"><a href=3D"https://datatracker.iet=
f.org/meeting/105/materials/slides-105-ippm-14-draft-geib-ippm-connectivity=
-monitoring-00" target=3D"_blank"><span lang=3D"EN-US">https://datatracker.=
ietf.org/meeting/105/materials/slides-105-ippm-14-draft-geib-ippm-connectiv=
ity-monitoring-00</span></a></span><u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Draft url:<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal"><a href=3D"https://datatracker.ietf.org/doc/draft-ge=
ib-ippm-connectivity-monitoring/" target=3D"_blank">https://datatracker.iet=
f.org/doc/draft-geib-ippm-connectivity-monitoring/</a><u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Ruediger<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal">_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/spring" target=3D"_blank">=
https://www.ietf.org/mailman/listinfo/spring</a><u></u><u></u></p>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</div>

</blockquote></div>

--000000000000a491fe059f8b7b47--


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From: <Ruediger.Geib@telekom.de>
To: <robert@raszuk.net>
CC: <ippm-chairs@ietf.org>, <spring@ietf.org>, <ippm@ietf.org>
Thread-Topic: [spring] Monitoring metric to detect and locate congestion
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Date: Thu, 27 Feb 2020 10:41:49 +0000
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From: Haoyu Song <haoyu.song@futurewei.com>
To: "Ruediger.Geib@telekom.de" <Ruediger.Geib@telekom.de>, "ippm-chairs@ietf.org" <ippm-chairs@ietf.org>
CC: "spring@ietf.org" <spring@ietf.org>, "ippm@ietf.org" <ippm@ietf.org>
Thread-Topic: Monitoring metric to detect and locate congestion
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Subject: Re: [ippm] Monitoring metric to detect and locate congestion
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Hi Ruediger,

I like the general idea that using pre-determined paths in SR to collect pe=
rformance metrics. I think this approach provides some unique benefits comp=
ared with the other approaches. It is also coincident with some of related =
research work I'm doing.
Here are some thoughts I have.

  1.  I think IOAM could be used as the standard approach for such probing =
packets. It can collect the performance metrics mentioned in the draft and =
does more.
  2.  An interesting problem raised by the draft but not fully addressed is=
 the method to plan the optimal paths. There is a work called INT-PATH (htt=
ps://ieeexplore.ieee.org/document/8737529) which applies Eulerian Path algo=
rithm to find the minimum set of paths with network-wide coverage. However,=
 the problem here seems different: you need path coverage redundancy. My qu=
estion is: do we really need the redundancy to achieve the measurement goal=
? If so, what's the best planning algorithm should be? In a real and large =
scale network, we have constraint on where the probing device(s) can be pla=
ced, and we usually want to monitoring the entire network, so an efficient =
algorithm is necessary.

Best regards,
Haoyu

From: ippm <ippm-bounces@ietf.org> On Behalf Of Ruediger.Geib@telekom.de
Sent: Tuesday, February 25, 2020 11:55 PM
To: ippm-chairs@ietf.org
Cc: spring@ietf.org; ippm@ietf.org
Subject: [ippm] Monitoring metric to detect and locate congestion

Dear IPPM (and SPRING) participants,

I'm solliciting interest in a new network monitoring metric which allows to=
 detect and locate congested interfaces. Important properties are

  *   Same scalability as ICMP ping in the sense one measurement relation r=
equired per monitored connection
  *   Adds detection and location of congested interfaces as compared to IC=
MP ping (otherwise measured metrics are compatible with ICMP ping)
  *   Requires Segment Routing (which means, measurement on forwarding laye=
r, no other interaction with passed routers - in opposite to ICMP ping)
  *   Active measurement (may be deployed using a single sender&receiver or=
 separate sender and receiver, Segment Routing allows for both options)

I'd be happy to present the draft in Vancouver.. If there's community inter=
est. Please read and comment.

You'll find slides at

https://datatracker.ietf.org/meeting/105/materials/slides-105-ippm-14-draft=
-geib-ippm-connectivity-monitoring-00<https://nam03.safelinks.protection.ou=
tlook.com/?url=3Dhttps%3A%2F%2Fdatatracker.ietf.org%2Fmeeting%2F105%2Fmater=
ials%2Fslides-105-ippm-14-draft-geib-ippm-connectivity-monitoring-00&data=
=3D02%7C01%7Chaoyu.song%40futurewei.com%7C4f7ef087db7046424e2508d7ba915817%=
7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637183005756536633&sdata=3D98D=
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Draft url:

https://datatracker.ietf.org/doc/draft-geib-ippm-connectivity-monitoring/<h=
ttps://nam03.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdatatrac=
ker.ietf.org%2Fdoc%2Fdraft-geib-ippm-connectivity-monitoring%2F&data=3D02%7=
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Regards,

Ruediger

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<body lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">Hi Ruediger,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I like the general idea that using pre-determined pa=
ths in SR to collect performance metrics. I think this approach provides so=
me unique benefits compared with the other approaches. It is also coinciden=
t with some of related research work
 I&#8217;m doing. <o:p></o:p></p>
<p class=3D"MsoNormal">Here are some thoughts I have.<o:p></o:p></p>
<ol style=3D"margin-top:0in" start=3D"1" type=3D"1">
<li class=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l2 level1 =
lfo3">I think IOAM could be used as the standard approach for such probing =
packets. It can collect the performance metrics mentioned in the draft and =
does more.
<o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"margin-left:0in;mso=
-list:l2 level1 lfo3">An interesting problem raised by the draft but not fu=
lly addressed is the method to plan the optimal paths. There is a work call=
ed INT-PATH (<a href=3D"https://ieeexplore.ieee.org/document/8737529">https=
://ieeexplore.ieee.org/document/8737529</a>)
 which applies Eulerian Path algorithm to find the minimum set of paths wit=
h network-wide coverage. However, the problem here seems different: you nee=
d path coverage redundancy. My question is: do we really need the redundanc=
y to achieve the measurement goal?
 If so, what&#8217;s the best planning algorithm should be? In a real and l=
arge scale network, we have constraint on where the probing device(s) can b=
e placed, and we usually want to monitoring the entire network, so an effic=
ient algorithm is necessary.&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;<o:p></o:p=
></li></ol>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Best regards,<o:p></o:p></p>
<p class=3D"MsoNormal">Haoyu<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> ippm &lt;ippm-bounces@ietf.org&gt; <b>O=
n Behalf Of </b>
Ruediger.Geib@telekom.de<br>
<b>Sent:</b> Tuesday, February 25, 2020 11:55 PM<br>
<b>To:</b> ippm-chairs@ietf.org<br>
<b>Cc:</b> spring@ietf.org; ippm@ietf.org<br>
<b>Subject:</b> [ippm] Monitoring metric to detect and locate congestion<o:=
p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"DE">Dear IPPM (and SPRING) participant=
s,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"DE"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal">I&#8217;m solliciting interest in a new network moni=
toring metric which allows to detect and locate congested interfaces. Impor=
tant properties are<o:p></o:p></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li class=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l1 level1 =
lfo6">Same scalability as ICMP ping in the sense one measurement relation r=
equired per monitored connection<o:p></o:p></li><li class=3D"MsoListParagra=
ph" style=3D"margin-left:0in;mso-list:l1 level1 lfo6">Adds detection and lo=
cation of congested interfaces as compared to ICMP ping (otherwise measured=
 metrics are compatible with ICMP ping)<o:p></o:p></li><li class=3D"MsoList=
Paragraph" style=3D"margin-left:0in;mso-list:l1 level1 lfo6">Requires Segme=
nt Routing (which means, measurement on forwarding layer, no other interact=
ion with passed routers &#8211; in opposite to ICMP ping)<o:p></o:p></li><l=
i class=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l1 level1 lf=
o6">Active measurement (may be deployed using a single sender&amp;receiver =
or separate sender and receiver, Segment Routing allows for both options)<o=
:p></o:p></li></ul>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I&#8217;d be happy to present the draft in Vancouver=
.. If there&#8217;s community interest. Please read and comment.<o:p></o:p>=
</p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">You&#8217;ll find slides at &nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><a href=3D"https://nam03.safelinks.protection.outloo=
k.com/?url=3Dhttps%3A%2F%2Fdatatracker.ietf.org%2Fmeeting%2F105%2Fmaterials=
%2Fslides-105-ippm-14-draft-geib-ippm-connectivity-monitoring-00&amp;data=
=3D02%7C01%7Chaoyu.song%40futurewei.com%7C4f7ef087db7046424e2508d7ba915817%=
7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637183005756536633&amp;sdata=
=3D98D7jZDubbhdB3ext94tjEElItEBVyDUld6cQtND6O4%3D&amp;reserved=3D0">https:/=
/datatracker.ietf.org/meeting/105/materials/slides-105-ippm-14-draft-geib-i=
ppm-connectivity-monitoring-00</a><o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Draft url:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><a href=3D"https://nam03.safelinks.protection.outloo=
k.com/?url=3Dhttps%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-geib-ippm-con=
nectivity-monitoring%2F&amp;data=3D02%7C01%7Chaoyu.song%40futurewei.com%7C4=
f7ef087db7046424e2508d7ba915817%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%=
7C637183005756546590&amp;sdata=3DsRAxvsAvs2nHOFme1%2FVZV%2FcFgvZ5AIFtFe5jIn=
mfy7Q%3D&amp;reserved=3D0">https://datatracker.ietf.org/doc/draft-geib-ippm=
-connectivity-monitoring/</a><o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Regards,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ruediger<o:p></o:p></p>
</div>
</body>
</html>

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Date: Thu, 27 Feb 2020 20:50:02 +0100
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To: Haoyu Song <haoyu.song@futurewei.com>
Cc: "Ruediger.Geib@telekom.de" <Ruediger.Geib@telekom.de>, "ippm-chairs@ietf.org" <ippm-chairs@ietf.org>,  "spring@ietf.org" <spring@ietf.org>, "ippm@ietf.org" <ippm@ietf.org>
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Hi Haoyu,

> which applies Eulerian Path algorithm to find the minimum set of paths
with network-wide coverage.

In practice networks use ECMP. ECMP decision may happen at each hop. Your
end to end flows get spread over all ECMP paths. So limiting number of
probed paths is inaccurate to the fundamental objective of the exercise.

That is infact main challenge with any end to end path probing today ... if
you do not cover all possible paths your packets may take between ingress
and egress you just do not get full picture of the network.

Thx a lot,
R.


On Thu, Feb 27, 2020 at 8:44 PM Haoyu Song <haoyu.song@futurewei.com> wrote=
:

> Hi Ruediger,
>
>
>
> I like the general idea that using pre-determined paths in SR to collect
> performance metrics. I think this approach provides some unique benefits
> compared with the other approaches. It is also coincident with some of
> related research work I=E2=80=99m doing.
>
> Here are some thoughts I have.
>
>    1. I think IOAM could be used as the standard approach for such
>    probing packets. It can collect the performance metrics mentioned in t=
he
>    draft and does more.
>    2. An interesting problem raised by the draft but not fully addressed
>    is the method to plan the optimal paths. There is a work called INT-PA=
TH (
>    https://ieeexplore.ieee.org/document/8737529) which applies Eulerian
>    Path algorithm to find the minimum set of paths with network-wide cove=
rage.
>    However, the problem here seems different: you need path coverage
>    redundancy. My question is: do we really need the redundancy to achiev=
e the
>    measurement goal? If so, what=E2=80=99s the best planning algorithm sh=
ould be? In a
>    real and large scale network, we have constraint on where the probing
>    device(s) can be placed, and we usually want to monitoring the entire
>    network, so an efficient algorithm is necessary.
>
>
>
> Best regards,
>
> Haoyu
>
>
>
> *From:* ippm <ippm-bounces@ietf.org> *On Behalf Of *
> Ruediger.Geib@telekom.de
> *Sent:* Tuesday, February 25, 2020 11:55 PM
> *To:* ippm-chairs@ietf.org
> *Cc:* spring@ietf.org; ippm@ietf.org
> *Subject:* [ippm] Monitoring metric to detect and locate congestion
>
>
>
> Dear IPPM (and SPRING) participants,
>
>
>
> I=E2=80=99m solliciting interest in a new network monitoring metric which=
 allows
> to detect and locate congested interfaces. Important properties are
>
>    - Same scalability as ICMP ping in the sense one measurement relation
>    required per monitored connection
>    - Adds detection and location of congested interfaces as compared to
>    ICMP ping (otherwise measured metrics are compatible with ICMP ping)
>    - Requires Segment Routing (which means, measurement on forwarding
>    layer, no other interaction with passed routers =E2=80=93 in opposite =
to ICMP ping)
>    - Active measurement (may be deployed using a single sender&receiver
>    or separate sender and receiver, Segment Routing allows for both optio=
ns)
>
>
>
> I=E2=80=99d be happy to present the draft in Vancouver... If there=E2=80=
=99s community
> interest. Please read and comment.
>
>
>
> You=E2=80=99ll find slides at
>
>
>
>
> https://datatracker.ietf.org/meeting/105/materials/slides-105-ippm-14-dra=
ft-geib-ippm-connectivity-monitoring-00
> <https://nam03.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdata=
tracker.ietf.org%2Fmeeting%2F105%2Fmaterials%2Fslides-105-ippm-14-draft-gei=
b-ippm-connectivity-monitoring-00&data=3D02%7C01%7Chaoyu.song%40futurewei.c=
om%7C4f7ef087db7046424e2508d7ba915817%7C0fee8ff2a3b240189c753a1d5591fedc%7C=
1%7C0%7C637183005756536633&sdata=3D98D7jZDubbhdB3ext94tjEElItEBVyDUld6cQtND=
6O4%3D&reserved=3D0>
>
>
>
> Draft url:
>
>
>
> https://datatracker.ietf.org/doc/draft-geib-ippm-connectivity-monitoring/
> <https://nam03.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdata=
tracker.ietf.org%2Fdoc%2Fdraft-geib-ippm-connectivity-monitoring%2F&data=3D=
02%7C01%7Chaoyu.song%40futurewei.com%7C4f7ef087db7046424e2508d7ba915817%7C0=
fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637183005756546590&sdata=3DsRAxvs=
Avs2nHOFme1%2FVZV%2FcFgvZ5AIFtFe5jInmfy7Q%3D&reserved=3D0>
>
>
>
> Regards,
>
>
>
> Ruediger
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>

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<div dir=3D"ltr">Hi Haoyu,<div><br></div><div>&gt; which applies Eulerian P=
ath algorithm to find the minimum set of paths with network-wide coverage.=
=C2=A0=C2=A0<br></div><div><br></div><div>In practice networks use ECMP. EC=
MP decision may happen at each hop. Your end to end flows get spread over a=
ll ECMP paths. So limiting number of probed paths is inaccurate to the fund=
amental objective of the exercise.=C2=A0</div><div><br></div><div>That is i=
nfact main challenge=C2=A0with any end to end path probing today ... if you=
 do not cover all possible paths your packets may take between ingress and=
=C2=A0egress you just do not get full picture of the network.=C2=A0</div><d=
iv><br></div><div>Thx a lot,</div><div>R.</div><div><br></div></div><br><di=
v class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Feb 2=
7, 2020 at 8:44 PM Haoyu Song &lt;<a href=3D"mailto:haoyu.song@futurewei.co=
m">haoyu.song@futurewei.com</a>&gt; wrote:<br></div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,=
204,204);padding-left:1ex">





<div lang=3D"EN-US">
<div>
<p class=3D"MsoNormal">Hi Ruediger,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">I like the general idea that using pre-determined pa=
ths in SR to collect performance metrics. I think this approach provides so=
me unique benefits compared with the other approaches. It is also coinciden=
t with some of related research work
 I=E2=80=99m doing. <u></u><u></u></p>
<p class=3D"MsoNormal">Here are some thoughts I have.<u></u><u></u></p>
<ol style=3D"margin-top:0in" start=3D"1" type=3D"1">
<li style=3D"margin-left:0in">I think IOAM could be used as the standard ap=
proach for such probing packets. It can collect the performance metrics men=
tioned in the draft and does more.
<u></u><u></u></li><li style=3D"margin-left:0in">An interesting problem rai=
sed by the draft but not fully addressed is the method to plan the optimal =
paths. There is a work called INT-PATH (<a href=3D"https://ieeexplore.ieee.=
org/document/8737529" target=3D"_blank">https://ieeexplore.ieee.org/documen=
t/8737529</a>)
 which applies Eulerian Path algorithm to find the minimum set of paths wit=
h network-wide coverage. However, the problem here seems different: you nee=
d path coverage redundancy. My question is: do we really need the redundanc=
y to achieve the measurement goal?
 If so, what=E2=80=99s the best planning algorithm should be? In a real and=
 large scale network, we have constraint on where the probing device(s) can=
 be placed, and we usually want to monitoring the entire network, so an eff=
icient algorithm is necessary.=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0<u></u><=
u></u></li></ol>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Best regards,<u></u><u></u></p>
<p class=3D"MsoNormal">Haoyu<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div style=3D"border-right:none;border-bottom:none;border-left:none;border-=
top:1pt solid rgb(225,225,225);padding:3pt 0in 0in">
<p class=3D"MsoNormal"><b>From:</b> ippm &lt;<a href=3D"mailto:ippm-bounces=
@ietf.org" target=3D"_blank">ippm-bounces@ietf.org</a>&gt; <b>On Behalf Of =
</b>
<a href=3D"mailto:Ruediger.Geib@telekom.de" target=3D"_blank">Ruediger.Geib=
@telekom.de</a><br>
<b>Sent:</b> Tuesday, February 25, 2020 11:55 PM<br>
<b>To:</b> <a href=3D"mailto:ippm-chairs@ietf.org" target=3D"_blank">ippm-c=
hairs@ietf.org</a><br>
<b>Cc:</b> <a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf=
.org</a>; <a href=3D"mailto:ippm@ietf.org" target=3D"_blank">ippm@ietf.org<=
/a><br>
<b>Subject:</b> [ippm] Monitoring metric to detect and locate congestion<u>=
</u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><span lang=3D"DE">Dear IPPM (and SPRING) participant=
s,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"DE"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal">I=E2=80=99m solliciting interest in a new network mo=
nitoring metric which allows to detect and locate congested interfaces. Imp=
ortant properties are<u></u><u></u></p>
<ul style=3D"margin-top:0in" type=3D"disc">
<li style=3D"margin-left:0in">Same scalability as ICMP ping in the sense on=
e measurement relation required per monitored connection<u></u><u></u></li>=
<li style=3D"margin-left:0in">Adds detection and location of congested inte=
rfaces as compared to ICMP ping (otherwise measured metrics are compatible =
with ICMP ping)<u></u><u></u></li><li style=3D"margin-left:0in">Requires Se=
gment Routing (which means, measurement on forwarding layer, no other inter=
action with passed routers =E2=80=93 in opposite to ICMP ping)<u></u><u></u=
></li><li style=3D"margin-left:0in">Active measurement (may be deployed usi=
ng a single sender&amp;receiver or separate sender and receiver, Segment Ro=
uting allows for both options)<u></u><u></u></li></ul>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">I=E2=80=99d be happy to present the draft in Vancouv=
er... If there=E2=80=99s community interest. Please read and comment.<u></u=
><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">You=E2=80=99ll find slides at =C2=A0<u></u><u></u></=
p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><a href=3D"https://nam03.safelinks.protection.outloo=
k.com/?url=3Dhttps%3A%2F%2Fdatatracker.ietf.org%2Fmeeting%2F105%2Fmaterials=
%2Fslides-105-ippm-14-draft-geib-ippm-connectivity-monitoring-00&amp;data=
=3D02%7C01%7Chaoyu.song%40futurewei.com%7C4f7ef087db7046424e2508d7ba915817%=
7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637183005756536633&amp;sdata=
=3D98D7jZDubbhdB3ext94tjEElItEBVyDUld6cQtND6O4%3D&amp;reserved=3D0" target=
=3D"_blank">https://datatracker.ietf.org/meeting/105/materials/slides-105-i=
ppm-14-draft-geib-ippm-connectivity-monitoring-00</a><u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Draft url:<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><a href=3D"https://nam03.safelinks.protection.outloo=
k.com/?url=3Dhttps%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-geib-ippm-con=
nectivity-monitoring%2F&amp;data=3D02%7C01%7Chaoyu.song%40futurewei.com%7C4=
f7ef087db7046424e2508d7ba915817%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%=
7C637183005756546590&amp;sdata=3DsRAxvsAvs2nHOFme1%2FVZV%2FcFgvZ5AIFtFe5jIn=
mfy7Q%3D&amp;reserved=3D0" target=3D"_blank">https://datatracker.ietf.org/d=
oc/draft-geib-ippm-connectivity-monitoring/</a><u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Ruediger<u></u><u></u></p>
</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>

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From: Haoyu Song <haoyu.song@futurewei.com>
To: Robert Raszuk <robert@raszuk.net>
CC: "Ruediger.Geib@telekom.de" <Ruediger.Geib@telekom.de>, "ippm-chairs@ietf.org" <ippm-chairs@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "ippm@ietf.org" <ippm@ietf.org>
Thread-Topic: [spring] Monitoring metric to detect and locate congestion
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From: Robert Raszuk <robert@raszuk.net>
Date: Thu, 27 Feb 2020 21:18:19 +0100
Message-ID: <CAOj+MMHPU-EvGXSSe6959YLHF2TuaBub66DNcvvMKmbfz-XLpA@mail.gmail.com>
To: Haoyu Song <haoyu.song@futurewei.com>
Cc: "Ruediger.Geib@telekom.de" <Ruediger.Geib@telekom.de>, "ippm-chairs@ietf.org" <ippm-chairs@ietf.org>,  "spring@ietf.org" <spring@ietf.org>, "ippm@ietf.org" <ippm@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/ippm/7xthokWTyCUBGZnuFZlRzXhjLko>
Subject: Re: [ippm] [spring] Monitoring metric to detect and locate congestion
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The point is not to assure all egress ports are inspected.

The point of any really useful end to end path probing is to find out if
combination of ingress+egress queuing on each transit node my packet may
traverse are not congested.

Looking at Eulerian path algorithm I do not see such guarantees.

Best,
R.

PS. Path probing is A1 to B1. It is not A1 to B1, B2 .. Bn. where An are
the ingress ports to the network and Bn are the egress ports.

On Thu, Feb 27, 2020 at 9:14 PM Haoyu Song <haoyu.song@futurewei.com> wrote=
:

> Hi Robert,
>
>
>
> The Eulerian path algorithm guarantees to visit all the edges of a graph.
> In the SR context, we can consider the sub-path between two segments an
> edge.
>
>
>
> Haoyu
>
>
>
> *From:* Robert Raszuk <robert@raszuk.net>
> *Sent:* Thursday, February 27, 2020 11:50 AM
> *To:* Haoyu Song <haoyu.song@futurewei.com>
> *Cc:* Ruediger.Geib@telekom.de; ippm-chairs@ietf.org; spring@ietf.org;
> ippm@ietf.org
> *Subject:* Re: [spring] Monitoring metric to detect and locate congestion
>
>
>
> Hi Haoyu,
>
>
>
> > which applies Eulerian Path algorithm to find the minimum set of paths
> with network-wide coverage.
>
>
>
> In practice networks use ECMP. ECMP decision may happen at each hop. Your
> end to end flows get spread over all ECMP paths. So limiting number of
> probed paths is inaccurate to the fundamental objective of the exercise.
>
>
>
> That is infact main challenge with any end to end path probing today ...
> if you do not cover all possible paths your packets may take between
> ingress and egress you just do not get full picture of the network.
>
>
>
> Thx a lot,
>
> R.
>
>
>
>
>
> On Thu, Feb 27, 2020 at 8:44 PM Haoyu Song <haoyu.song@futurewei.com>
> wrote:
>
> Hi Ruediger,
>
>
>
> I like the general idea that using pre-determined paths in SR to collect
> performance metrics. I think this approach provides some unique benefits
> compared with the other approaches. It is also coincident with some of
> related research work I=E2=80=99m doing.
>
> Here are some thoughts I have.
>
>    1. I think IOAM could be used as the standard approach for such
>    probing packets. It can collect the performance metrics mentioned in t=
he
>    draft and does more.
>    2. An interesting problem raised by the draft but not fully addressed
>    is the method to plan the optimal paths. There is a work called INT-PA=
TH (
>    https://ieeexplore.ieee.org/document/8737529
>    <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fi=
eeexplore.ieee.org%2Fdocument%2F8737529&data=3D02%7C01%7Chaoyu.song%40futur=
ewei.com%7C06b91304725b43b1d3ea08d7bbbe428b%7C0fee8ff2a3b240189c753a1d5591f=
edc%7C1%7C0%7C637184298148875164&sdata=3D6wc6xDzbNQ2RQATvTcGvkpaQNEXUu53w39=
b4oN7Z9qE%3D&reserved=3D0>)
>    which applies Eulerian Path algorithm to find the minimum set of paths=
 with
>    network-wide coverage. However, the problem here seems different: you =
need
>    path coverage redundancy. My question is: do we really need the redund=
ancy
>    to achieve the measurement goal? If so, what=E2=80=99s the best planni=
ng algorithm
>    should be? In a real and large scale network, we have constraint on wh=
ere
>    the probing device(s) can be placed, and we usually want to monitoring=
 the
>    entire network, so an efficient algorithm is necessary.
>
>
>
> Best regards,
>
> Haoyu
>
>
>
> *From:* ippm <ippm-bounces@ietf.org> *On Behalf Of *
> Ruediger.Geib@telekom.de
> *Sent:* Tuesday, February 25, 2020 11:55 PM
> *To:* ippm-chairs@ietf.org
> *Cc:* spring@ietf.org; ippm@ietf.org
> *Subject:* [ippm] Monitoring metric to detect and locate congestion
>
>
>
> Dear IPPM (and SPRING) participants,
>
>
>
> I=E2=80=99m solliciting interest in a new network monitoring metric which=
 allows
> to detect and locate congested interfaces. Important properties are
>
>    - Same scalability as ICMP ping in the sense one measurement relation
>    required per monitored connection
>    - Adds detection and location of congested interfaces as compared to
>    ICMP ping (otherwise measured metrics are compatible with ICMP ping)
>    - Requires Segment Routing (which means, measurement on forwarding
>    layer, no other interaction with passed routers =E2=80=93 in opposite =
to ICMP ping)
>    - Active measurement (may be deployed using a single sender&receiver
>    or separate sender and receiver, Segment Routing allows for both optio=
ns)
>
>
>
> I=E2=80=99d be happy to present the draft in Vancouver... If there=E2=80=
=99s community
> interest. Please read and comment.
>
>
>
> You=E2=80=99ll find slides at
>
>
>
>
> https://datatracker.ietf.org/meeting/105/materials/slides-105-ippm-14-dra=
ft-geib-ippm-connectivity-monitoring-00
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdata=
tracker.ietf.org%2Fmeeting%2F105%2Fmaterials%2Fslides-105-ippm-14-draft-gei=
b-ippm-connectivity-monitoring-00&data=3D02%7C01%7Chaoyu.song%40futurewei.c=
om%7C06b91304725b43b1d3ea08d7bbbe428b%7C0fee8ff2a3b240189c753a1d5591fedc%7C=
1%7C0%7C637184298148875164&sdata=3DgKnVZHYdqQYR%2FWVttXd0unu8a%2Fc3bvcdIXWb=
Q5TcQtg%3D&reserved=3D0>
>
>
>
> Draft url:
>
>
>
> https://datatracker.ietf.org/doc/draft-geib-ippm-connectivity-monitoring/
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fdata=
tracker.ietf.org%2Fdoc%2Fdraft-geib-ippm-connectivity-monitoring%2F&data=3D=
02%7C01%7Chaoyu.song%40futurewei.com%7C06b91304725b43b1d3ea08d7bbbe428b%7C0=
fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637184298148885111&sdata=3DSiqk8y=
VDMNy9fGEPoMJoEr5GpkraxBv4N5hocVDlRL8%3D&reserved=3D0>
>
>
>
> Regards,
>
>
>
> Ruediger
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
> <https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fwww.=
ietf.org%2Fmailman%2Flistinfo%2Fspring&data=3D02%7C01%7Chaoyu.song%40future=
wei.com%7C06b91304725b43b1d3ea08d7bbbe428b%7C0fee8ff2a3b240189c753a1d5591fe=
dc%7C1%7C0%7C637184298148885111&sdata=3DnA0W90kvFpl%2B%2BrYFHgEjPkYrP1mHrtT=
1W5nEaakNlFI%3D&reserved=3D0>
>
>

--000000000000998cca059f946c57
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">The point is not to assure all egress ports are inspected.=
<div><br></div><div>The point of any really useful end to end path probing =
is to find out if combination of ingress+egress queuing on each transit nod=
e my packet may traverse are not congested.=C2=A0</div><div><br></div><div>=
Looking at=C2=A0Eulerian path algorithm I do not see such guarantees.=C2=A0=
</div><div><br></div><div>Best,</div><div>R.</div><div><br></div><div>PS. P=
ath probing is A1 to B1. It is not A1 to B1, B2 .. Bn. where An are the ing=
ress ports to the network and Bn are the egress ports.=C2=A0</div></div><br=
><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, F=
eb 27, 2020 at 9:14 PM Haoyu Song &lt;<a href=3D"mailto:haoyu.song@futurewe=
i.com">haoyu.song@futurewei.com</a>&gt; wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rg=
b(204,204,204);padding-left:1ex">





<div lang=3D"EN-US">
<div class=3D"gmail-m_-8714751800708044329WordSection1">
<p class=3D"MsoNormal">Hi Robert,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">The Eulerian path algorithm guarantees to visit all =
the edges of a graph. In the SR context, we can consider the sub-path betwe=
en two segments an edge.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Haoyu <u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><b>From:</b> Robert Raszuk &lt;<a href=3D"mailto:rob=
ert@raszuk.net" target=3D"_blank">robert@raszuk.net</a>&gt; <br>
<b>Sent:</b> Thursday, February 27, 2020 11:50 AM<br>
<b>To:</b> Haoyu Song &lt;<a href=3D"mailto:haoyu.song@futurewei.com" targe=
t=3D"_blank">haoyu.song@futurewei.com</a>&gt;<br>
<b>Cc:</b> <a href=3D"mailto:Ruediger.Geib@telekom.de" target=3D"_blank">Ru=
ediger.Geib@telekom.de</a>; <a href=3D"mailto:ippm-chairs@ietf.org" target=
=3D"_blank">ippm-chairs@ietf.org</a>; <a href=3D"mailto:spring@ietf.org" ta=
rget=3D"_blank">spring@ietf.org</a>; <a href=3D"mailto:ippm@ietf.org" targe=
t=3D"_blank">ippm@ietf.org</a><br>
<b>Subject:</b> Re: [spring] Monitoring metric to detect and locate congest=
ion<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">Hi Haoyu,<u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">&gt; which applies Eulerian Path algorithm to find t=
he minimum set of paths with network-wide coverage.=C2=A0=C2=A0<u></u><u></=
u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">In practice networks use ECMP. ECMP decision may hap=
pen at each hop. Your end to end flows get spread over all ECMP paths. So l=
imiting number of probed paths is inaccurate to the fundamental objective o=
f the exercise.=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">That is infact main challenge=C2=A0with any end to e=
nd path probing today ... if you do not cover all possible paths your packe=
ts may take between ingress and=C2=A0egress you just do not get full pictur=
e of the network.=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">Thx a lot,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">R.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal">On Thu, Feb 27, 2020 at 8:44 PM Haoyu Song &lt;<a hr=
ef=3D"mailto:haoyu.song@futurewei.com" target=3D"_blank">haoyu.song@futurew=
ei.com</a>&gt; wrote:<u></u><u></u></p>
</div>
<blockquote style=3D"border-top:none;border-right:none;border-bottom:none;b=
order-left:1pt solid rgb(204,204,204);padding:0in 0in 0in 6pt;margin:5pt 0i=
n 5pt 4.8pt">
<div>
<div>
<p class=3D"MsoNormal">Hi Ruediger,<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">I like the general idea that using pre-determined pa=
ths in SR to collect performance metrics. I think this approach provides so=
me unique benefits compared with the other approaches.
 It is also coincident with some of related research work I=E2=80=99m doing=
. <u></u><u></u></p>
<p class=3D"MsoNormal">Here are some thoughts I have.<u></u><u></u></p>
<ol start=3D"1" type=3D"1">
<li class=3D"MsoNormal">
I think IOAM could be used as the standard approach for such probing packet=
s. It can collect the performance metrics mentioned in the draft and does m=
ore.
<u></u><u></u></li><li class=3D"MsoNormal">
An interesting problem raised by the draft but not fully addressed is the m=
ethod to plan the optimal paths. There is a work called INT-PATH (<a href=
=3D"https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fiee=
explore.ieee.org%2Fdocument%2F8737529&amp;data=3D02%7C01%7Chaoyu.song%40fut=
urewei.com%7C06b91304725b43b1d3ea08d7bbbe428b%7C0fee8ff2a3b240189c753a1d559=
1fedc%7C1%7C0%7C637184298148875164&amp;sdata=3D6wc6xDzbNQ2RQATvTcGvkpaQNEXU=
u53w39b4oN7Z9qE%3D&amp;reserved=3D0" target=3D"_blank">https://ieeexplore.i=
eee.org/document/8737529</a>)
 which applies Eulerian Path algorithm to find the minimum set of paths wit=
h network-wide coverage. However, the problem here seems different: you nee=
d path coverage redundancy. My question is: do we really need the redundanc=
y to achieve the measurement goal?
 If so, what=E2=80=99s the best planning algorithm should be? In a real and=
 large scale network, we have constraint on where the probing device(s) can=
 be placed, and we usually want to monitoring the entire network, so an eff=
icient algorithm is necessary.=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0<u></u><=
u></u></li></ol>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Best regards,<u></u><u></u></p>
<p class=3D"MsoNormal">Haoyu<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<div>
<div style=3D"border-right:none;border-bottom:none;border-left:none;border-=
top:1pt solid rgb(225,225,225);padding:3pt 0in 0in">
<p class=3D"MsoNormal"><b>From:</b> ippm &lt;<a href=3D"mailto:ippm-bounces=
@ietf.org" target=3D"_blank">ippm-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b><a href=3D"mailto:Ruediger.Geib@telekom.de" target=3D"_=
blank">Ruediger.Geib@telekom.de</a><br>
<b>Sent:</b> Tuesday, February 25, 2020 11:55 PM<br>
<b>To:</b> <a href=3D"mailto:ippm-chairs@ietf.org" target=3D"_blank">ippm-c=
hairs@ietf.org</a><br>
<b>Cc:</b> <a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf=
.org</a>; <a href=3D"mailto:ippm@ietf.org" target=3D"_blank">
ippm@ietf.org</a><br>
<b>Subject:</b> [ippm] Monitoring metric to detect and locate congestion<u>=
</u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal"><span lang=3D"DE">Dear IPPM (and SPRING) participant=
s,</span><u></u><u></u></p>
<p class=3D"MsoNormal"><span lang=3D"DE">=C2=A0</span><u></u><u></u></p>
<p class=3D"MsoNormal">I=E2=80=99m solliciting interest in a new network mo=
nitoring metric which allows to detect and locate congested interfaces. Imp=
ortant properties are<u></u><u></u></p>
<ul type=3D"disc">
<li class=3D"MsoNormal">
Same scalability as ICMP ping in the sense one measurement relation require=
d per monitored connection<u></u><u></u></li><li class=3D"MsoNormal">
Adds detection and location of congested interfaces as compared to ICMP pin=
g (otherwise measured metrics are compatible with ICMP ping)<u></u><u></u><=
/li><li class=3D"MsoNormal">
Requires Segment Routing (which means, measurement on forwarding layer, no =
other interaction with passed routers =E2=80=93 in opposite to ICMP ping)<u=
></u><u></u></li><li class=3D"MsoNormal">
Active measurement (may be deployed using a single sender&amp;receiver or s=
eparate sender and receiver, Segment Routing allows for both options)<u></u=
><u></u></li></ul>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">I=E2=80=99d be happy to present the draft in Vancouv=
er... If there=E2=80=99s community interest. Please read and comment.<u></u=
><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">You=E2=80=99ll find slides at =C2=A0<u></u><u></u></=
p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal"><a href=3D"https://nam11.safelinks.protection.outloo=
k.com/?url=3Dhttps%3A%2F%2Fdatatracker.ietf.org%2Fmeeting%2F105%2Fmaterials=
%2Fslides-105-ippm-14-draft-geib-ippm-connectivity-monitoring-00&amp;data=
=3D02%7C01%7Chaoyu.song%40futurewei.com%7C06b91304725b43b1d3ea08d7bbbe428b%=
7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637184298148875164&amp;sdata=
=3DgKnVZHYdqQYR%2FWVttXd0unu8a%2Fc3bvcdIXWbQ5TcQtg%3D&amp;reserved=3D0" tar=
get=3D"_blank">https://datatracker.ietf.org/meeting/105/materials/slides-10=
5-ippm-14-draft-geib-ippm-connectivity-monitoring-00</a><u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Draft url:<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal"><a href=3D"https://nam11.safelinks.protection.outloo=
k.com/?url=3Dhttps%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-geib-ippm-con=
nectivity-monitoring%2F&amp;data=3D02%7C01%7Chaoyu.song%40futurewei.com%7C0=
6b91304725b43b1d3ea08d7bbbe428b%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%=
7C637184298148885111&amp;sdata=3DSiqk8yVDMNy9fGEPoMJoEr5GpkraxBv4N5hocVDlRL=
8%3D&amp;reserved=3D0" target=3D"_blank">https://datatracker.ietf.org/doc/d=
raft-geib-ippm-connectivity-monitoring/</a><u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Ruediger<u></u><u></u></p>
</div>
</div>
<p class=3D"MsoNormal">_______________________________________________<br>
spring mailing list<br>
<a href=3D"mailto:spring@ietf.org" target=3D"_blank">spring@ietf.org</a><br=
>
<a href=3D"https://nam11.safelinks.protection.outlook.com/?url=3Dhttps%3A%2=
F%2Fwww.ietf.org%2Fmailman%2Flistinfo%2Fspring&amp;data=3D02%7C01%7Chaoyu.s=
ong%40futurewei.com%7C06b91304725b43b1d3ea08d7bbbe428b%7C0fee8ff2a3b240189c=
753a1d5591fedc%7C1%7C0%7C637184298148885111&amp;sdata=3DnA0W90kvFpl%2B%2BrY=
FHgEjPkYrP1mHrtT1W5nEaakNlFI%3D&amp;reserved=3D0" target=3D"_blank">https:/=
/www.ietf.org/mailman/listinfo/spring</a><u></u><u></u></p>
</blockquote>
</div>
</div>
</div>

</blockquote></div>

--000000000000998cca059f946c57--


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From: Haoyu Song <haoyu.song@futurewei.com>
To: Robert Raszuk <robert@raszuk.net>
CC: "Ruediger.Geib@telekom.de" <Ruediger.Geib@telekom.de>, "ippm-chairs@ietf.org" <ippm-chairs@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "ippm@ietf.org" <ippm@ietf.org>
Thread-Topic: [spring] Monitoring metric to detect and locate congestion
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Subject: Re: [ippm] [spring] Monitoring metric to detect and locate congestion
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From: Tianran Zhou <zhoutianran@huawei.com>
To: Haoyu Song <haoyu.song@futurewei.com>, Robert Raszuk <robert@raszuk.net>
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From: Tianran Zhou <zhoutianran@huawei.com>
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Thread-Topic: [spring] Monitoring metric to detect and locate congestion
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Subject: Re: [ippm] [spring] Monitoring metric to detect and locate congestion
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From: Haoyu Song <haoyu.song@futurewei.com>
To: Tianran Zhou <zhoutianran@huawei.com>, Robert Raszuk <robert@raszuk.net>
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Subject: Re: [ippm] [spring] Monitoring metric to detect and locate congestion
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From: "Rakesh Gandhi (rgandhi)" <rgandhi@cisco.com>
To: Greg Mirsky <gregimirsky@gmail.com>, IETF IPPM WG <ippm@ietf.org>
Thread-Topic: [ippm] Fwd: New Version Notification for draft-ietf-ippm-stamp-option-tlv-03.txt
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Date: Fri, 28 Feb 2020 03:48:38 +0000
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Thu, 27 Feb 2020 20:13:30 -0800
Message-ID: <CA+RyBmUTh6NL-h-d7BqJG-mL7=sBLw7zn45DRP8SrR4a8dT_PQ@mail.gmail.com>
To: "Rakesh Gandhi (rgandhi)" <rgandhi@cisco.com>
Cc: IETF IPPM WG <ippm@ietf.org>
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Subject: Re: [ippm] Fwd: New Version Notification for draft-ietf-ippm-stamp-option-tlv-03.txt
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--000000000000108d56059f9b103a
Content-Type: text/plain; charset="UTF-8"

Hi Rakesh,
thank you for your interest in the update to STAMP extensions. Can you
elaborate on where you see the conflict between STAMP and your proposal? Is
the change you've proposed applicable to STAMP test packet? As far as I
understand, STAMP cannot support your proposal and interwork with a system
that is complaint with draft-gandhi-spring-twamp-srpm. As for STAP
interworking with TWAMP in Unauthenticated mode, SSID doesn't change
anything, as TWAMP Session-Sender will zero the field and Session-Reflector
will ignore it on receipt. So I don't see conflict here at all. I greatly
appreciate your clarification.

Regards,
Greg

On Thu, Feb 27, 2020 at 7:48 PM Rakesh Gandhi (rgandhi) <rgandhi@cisco.com>
wrote:

> Hi Greg,
>
> I noticed that this STAMP TLV draft update is proposing to modify the
> STAMP packet format to contain SSID.
>
>
>
>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>       |         Error Estimate        |             SSID              |
>
>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>
>
> The SRPM draft posted in December had already proposed to use the same
> field for control-code.
>
> https://tools.ietf.org/html/draft-gandhi-spring-twamp-srpm-05
>
>     .                                                               .
>
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>     |         Error Estimate        | Reserved      |  Control Code |
>
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>     .
>
>
>
> Looks like there is a conflict in packet format update proposed that need
> to sort out.
>
>
>
> Thanks,
>
> Rakesh
>
>
>
>
>
> *From: *ippm <ippm-bounces@ietf.org> on behalf of Greg Mirsky <
> gregimirsky@gmail.com>
> *Date: *Friday, February 21, 2020 at 11:07 AM
> *To: *IETF IPPM WG <ippm@ietf.org>
> *Subject: *[ippm] Fwd: New Version Notification for
> draft-ietf-ippm-stamp-option-tlv-03.txt
>
>
>
> Dear All,
>
> the new version includes updates to the Followup Telemetry TLV and
> introduces the new HMAC TLV.
>
> We always welcome and greatly appreciate your comments, questions, and
> suggestions.
>
>
>
> Regards,
>
> Greg
>
> ---------- Forwarded message ---------
> From: <internet-drafts@ietf.org>
> Date: Fri, Feb 21, 2020 at 8:04 AM
> Subject: New Version Notification for
> draft-ietf-ippm-stamp-option-tlv-03.txt
> To: Henrik Nydell <hnydell@accedian.com <hnydell@accedian..com>>, Min
> Xiao <xiao.min2@zte.com.cn>, Adi Masputra <adi@apple.com>, Ernesto
> Ruffini <eruffini@outsys.org>, Gregory Mirsky <gregimirsky@gmail.com>,
> Richard Foote <footer.foote@nokia.com>
>
>
>
>
> A new version of I-D, draft-ietf-ippm-stamp-option-tlv-03.txt
> has been successfully submitted by Greg Mirsky and posted to the
> IETF repository.
>
> Name:           draft-ietf-ippm-stamp-option-tlv
> Revision:       03
> Title:          Simple Two-way Active Measurement Protocol Optional
> Extensions
> Document date:  2020-02-21
> Group:          ippm
> Pages:          25
> URL:
> https://www.ietf.org/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.txt
> Status:
> https://datatracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/
> Htmlized:
> https://tools.ietf.org/html/draft-ietf-ippm-stamp-option-tlv-03
> Htmlized:
> https://datatracker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tlv
> Diff:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-ippm-stamp-option-tlv-03
>
> Abstract:
>    This document describes optional extensions to Simple Two-way Active
>    Measurement Protocol (STAMP) which enable measurement performance
>    metrics in addition to ones supported by the STAMP base
>    specification.
>
>
>
>
> Please note that it may take a couple of minutes from the time of
> submission
> until the htmlized version and diff are available at tools.ietf.org.
>
> The IETF Secretariat
>

--000000000000108d56059f9b103a
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Rakesh,<div>thank you for your interest in the update t=
o STAMP extensions. Can you elaborate on where you see the conflict between=
 STAMP and your proposal? Is the change you&#39;ve proposed applicable to S=
TAMP test packet? As far as I understand, STAMP cannot support your proposa=
l and interwork with a system that is complaint with draft-gandhi-spring-tw=
amp-srpm. As for STAP interworking with TWAMP in Unauthenticated mode, SSID=
 doesn&#39;t change anything, as TWAMP Session-Sender will zero the field a=
nd Session-Reflector will ignore it on receipt. So I don&#39;t see conflict=
 here at all. I greatly appreciate your clarification.</div><div><br></div>=
<div>Regards,</div><div>Greg</div></div><br><div class=3D"gmail_quote"><div=
 dir=3D"ltr" class=3D"gmail_attr">On Thu, Feb 27, 2020 at 7:48 PM Rakesh Ga=
ndhi (rgandhi) &lt;<a href=3D"mailto:rgandhi@cisco.com">rgandhi@cisco.com</=
a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0p=
x 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">





<div lang=3D"EN-CA">
<div class=3D"gmail-m_4194966945652328437WordSection1">
<p class=3D"MsoNormal">Hi Greg,<u></u><u></u></p>
<p class=3D"MsoNormal">I noticed that this STAMP TLV draft update is propos=
ing to modify the STAMP packet format to contain SSID.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></pre>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 Error Estimate=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 SSID=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0 |<u></u><u></u></pre>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></pre>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">The SRPM draft posted in December had already propos=
ed to use the same field for control-code.<u></u><u></u></p>
<p class=3D"MsoNormal"><a href=3D"https://tools.ietf.org/html/draft-gandhi-=
spring-twamp-srpm-05" target=3D"_blank">https://tools.ietf.org/html/draft-g=
andhi-spring-twamp-srpm-05</a><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 .=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 Error Estimate=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | Reserv=
ed=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0 Control Code |<u></u><u></u></span=
></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 .=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Looks like there is a conflict in packet format upda=
te proposed that need to sort out.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Thanks,<u></u><u></u></p>
<p class=3D"MsoNormal">Rakesh<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div style=3D"border-right:none;border-bottom:none;border-left:none;border-=
top:1pt solid rgb(181,196,223);padding:3pt 0cm 0cm">
<p class=3D"MsoNormal"><b><span style=3D"font-size:12pt;color:black">From: =
</span></b><span style=3D"font-size:12pt;color:black">ippm &lt;<a href=3D"m=
ailto:ippm-bounces@ietf.org" target=3D"_blank">ippm-bounces@ietf.org</a>&gt=
; on behalf of Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" tar=
get=3D"_blank">gregimirsky@gmail.com</a>&gt;<br>
<b>Date: </b>Friday, February 21, 2020 at 11:07 AM<br>
<b>To: </b>IETF IPPM WG &lt;<a href=3D"mailto:ippm@ietf.org" target=3D"_bla=
nk">ippm@ietf.org</a>&gt;<br>
<b>Subject: </b>[ippm] Fwd: New Version Notification for draft-ietf-ippm-st=
amp-option-tlv-03.txt<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Dear All, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal">the new version includes updates to the Followup Tel=
emetry TLV and introduces the new HMAC TLV.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">We always welcome and greatly appreciate your commen=
ts, questions, and suggestions.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt">Greg<u></u><u></u></p>
<div>
<div>
<p class=3D"MsoNormal">---------- Forwarded message ---------<br>
From: &lt;<a href=3D"mailto:internet-drafts@ietf.org" target=3D"_blank">int=
ernet-drafts@ietf.org</a>&gt;<br>
Date: Fri, Feb 21, 2020 at 8:04 AM<br>
Subject: New Version Notification for draft-ietf-ippm-stamp-option-tlv-03.t=
xt<br>
To: Henrik Nydell &lt;<a href=3D"mailto:hnydell@accedian..com" target=3D"_b=
lank">hnydell@accedian.com</a>&gt;, Min Xiao &lt;<a href=3D"mailto:xiao.min=
2@zte.com.cn" target=3D"_blank">xiao.min2@zte.com.cn</a>&gt;, Adi Masputra =
&lt;<a href=3D"mailto:adi@apple.com" target=3D"_blank">adi@apple.com</a>&gt=
;, Ernesto Ruffini &lt;<a href=3D"mailto:eruffini@outsys.org" target=3D"_bl=
ank">eruffini@outsys.org</a>&gt;,
 Gregory Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_bla=
nk">gregimirsky@gmail.com</a>&gt;, Richard Foote &lt;<a href=3D"mailto:foot=
er.foote@nokia.com" target=3D"_blank">footer.foote@nokia.com</a>&gt;<u></u>=
<u></u></p>
</div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt"><br>
<br>
<br>
A new version of I-D, draft-ietf-ippm-stamp-option-tlv-03.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-ippm-stamp-option-=
tlv<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A003<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Simple Two-way Active Measurement =
Protocol Optional Extensions<br>
Document date:=C2=A0 2020-02-21<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 ippm<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 25<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.txt" target=3D"_blan=
k">
https://www.ietf.org/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.tx=
t</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ietf-ippm-stamp-option-tlv/" target=3D"_blank">https://data=
tracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ietf-ippm-stamp-option-tlv-03" target=3D"_blank">https://tools.ietf.o=
rg/html/draft-ietf-ippm-stamp-option-tlv-03</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ietf-ippm-stamp-option-tlv" target=3D"_blank">https://datat=
racker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tlv</a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ietf-ippm-stamp-option-tlv-03" target=3D"_blank">ht=
tps://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-ippm-stamp-option-tlv-03</a><b=
r>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document describes optional extensions to Simple Two-way =
Active<br>
=C2=A0 =C2=A0Measurement Protocol (STAMP) which enable measurement performa=
nce<br>
=C2=A0 =C2=A0metrics in addition to ones supported by the STAMP base<br>
=C2=A0 =C2=A0specification.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" target=3D"_blank">
tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>

</blockquote></div>

--000000000000108d56059f9b103a--


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From: Rakesh Gandhi <rgandhi.ietf@gmail.com>
Date: Fri, 28 Feb 2020 13:10:41 -0500
Message-ID: <CAMZsk6deP3fFtWhYqLBSmLBtEmFw4fhoojHak6UAvu6A369ZgQ@mail.gmail.com>
To: Greg Mirsky <gregimirsky@gmail.com>
Cc: "Rakesh Gandhi (rgandhi)" <rgandhi@cisco.com>, IETF IPPM WG <ippm@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/ippm/kl2OxoIeTxGScuRkYWTR57zEua0>
Subject: Re: [ippm] Fwd: New Version Notification for draft-ietf-ippm-stamp-option-tlv-03.txt
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--000000000000065abd059fa6c263
Content-Type: text/plain; charset="UTF-8"

Hi Greg,
Thanks for your reply.
The draft-gandhi-spring-twamp-srpm includes both TWAMP Light and STAMP
(Section 3.2) (TLVs for STAMP in other sections). Two drafts are updating
the same field in the STAMP packet format.
Thanks,
Rakesh


On Thu, Feb 27, 2020 at 11:14 PM Greg Mirsky <gregimirsky@gmail.com> wrote:

> Hi Rakesh,
> thank you for your interest in the update to STAMP extensions. Can you
> elaborate on where you see the conflict between STAMP and your proposal? Is
> the change you've proposed applicable to STAMP test packet? As far as I
> understand, STAMP cannot support your proposal and interwork with a system
> that is complaint with draft-gandhi-spring-twamp-srpm. As for STAP
> interworking with TWAMP in Unauthenticated mode, SSID doesn't change
> anything, as TWAMP Session-Sender will zero the field and Session-Reflector
> will ignore it on receipt. So I don't see conflict here at all. I greatly
> appreciate your clarification.
>
> Regards,
> Greg
>
> On Thu, Feb 27, 2020 at 7:48 PM Rakesh Gandhi (rgandhi) <rgandhi@cisco.com>
> wrote:
>
>> Hi Greg,
>>
>> I noticed that this STAMP TLV draft update is proposing to modify the
>> STAMP packet format to contain SSID.
>>
>>
>>
>>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>
>>       |         Error Estimate        |             SSID              |
>>
>>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>
>>
>>
>> The SRPM draft posted in December had already proposed to use the same
>> field for control-code.
>>
>> https://tools.ietf.org/html/draft-gandhi-spring-twamp-srpm-05
>>
>>     .                                                               .
>>
>>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>
>>     |         Error Estimate        | Reserved      |  Control Code |
>>
>>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>
>>     .
>>
>>
>>
>> Looks like there is a conflict in packet format update proposed that need
>> to sort out.
>>
>>
>>
>> Thanks,
>>
>> Rakesh
>>
>>
>>
>>
>>
>> *From: *ippm <ippm-bounces@ietf.org> on behalf of Greg Mirsky <
>> gregimirsky@gmail.com>
>> *Date: *Friday, February 21, 2020 at 11:07 AM
>> *To: *IETF IPPM WG <ippm@ietf.org>
>> *Subject: *[ippm] Fwd: New Version Notification for
>> draft-ietf-ippm-stamp-option-tlv-03.txt
>>
>>
>>
>> Dear All,
>>
>> the new version includes updates to the Followup Telemetry TLV and
>> introduces the new HMAC TLV.
>>
>> We always welcome and greatly appreciate your comments, questions, and
>> suggestions.
>>
>>
>>
>> Regards,
>>
>> Greg
>>
>> ---------- Forwarded message ---------
>> From: <internet-drafts@ietf.org>
>> Date: Fri, Feb 21, 2020 at 8:04 AM
>> Subject: New Version Notification for
>> draft-ietf-ippm-stamp-option-tlv-03.txt
>> To: Henrik Nydell <hnydell@accedian.com <hnydell@accedian..com>>, Min
>> Xiao <xiao.min2@zte.com.cn>, Adi Masputra <adi@apple.com>, Ernesto
>> Ruffini <eruffini@outsys.org>, Gregory Mirsky <gregimirsky@gmail.com>,
>> Richard Foote <footer.foote@nokia.com>
>>
>>
>>
>>
>> A new version of I-D, draft-ietf-ippm-stamp-option-tlv-03.txt
>> has been successfully submitted by Greg Mirsky and posted to the
>> IETF repository.
>>
>> Name:           draft-ietf-ippm-stamp-option-tlv
>> Revision:       03
>> Title:          Simple Two-way Active Measurement Protocol Optional
>> Extensions
>> Document date:  2020-02-21
>> Group:          ippm
>> Pages:          25
>> URL:
>> https://www.ietf.org/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.txt
>> Status:
>> https://datatracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/
>> Htmlized:
>> https://tools.ietf.org/html/draft-ietf-ippm-stamp-option-tlv-03
>> Htmlized:
>> https://datatracker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tlv
>> Diff:
>> https://www.ietf.org/rfcdiff?url2=draft-ietf-ippm-stamp-option-tlv-03
>>
>> Abstract:
>>    This document describes optional extensions to Simple Two-way Active
>>    Measurement Protocol (STAMP) which enable measurement performance
>>    metrics in addition to ones supported by the STAMP base
>>    specification.
>>
>>
>>
>>
>> Please note that it may take a couple of minutes from the time of
>> submission
>> until the htmlized version and diff are available at tools.ietf.org.
>>
>> The IETF Secretariat
>>
> _______________________________________________
> ippm mailing list
> ippm@ietf.org
> https://www.ietf.org/mailman/listinfo/ippm
>

--000000000000065abd059fa6c263
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Hi Greg,</div><div>Thanks for your reply.</div><div>T=
he draft-gandhi-spring-twamp-srpm includes both TWAMP Light and STAMP (Sect=
ion 3.2) (TLVs for STAMP in other sections). Two drafts are updating the sa=
me field in the STAMP packet format. <br></div><div>Thanks,</div><div>Rakes=
h<br></div><div><br></div></div><br><div class=3D"gmail_quote"><div dir=3D"=
ltr" class=3D"gmail_attr">On Thu, Feb 27, 2020 at 11:14 PM Greg Mirsky &lt;=
<a href=3D"mailto:gregimirsky@gmail.com">gregimirsky@gmail.com</a>&gt; wrot=
e:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0=
.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"l=
tr">Hi Rakesh,<div>thank you for your interest in the update to STAMP exten=
sions. Can you elaborate on where you see the conflict between STAMP and yo=
ur proposal? Is the change you&#39;ve proposed applicable to STAMP test pac=
ket? As far as I understand, STAMP cannot support your proposal and interwo=
rk with a system that is complaint with draft-gandhi-spring-twamp-srpm. As =
for STAP interworking with TWAMP in Unauthenticated mode, SSID doesn&#39;t =
change anything, as TWAMP Session-Sender will zero the field and Session-Re=
flector will ignore it on receipt. So I don&#39;t see conflict here at all.=
 I greatly appreciate your clarification.</div><div><br></div><div>Regards,=
</div><div>Greg</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" =
class=3D"gmail_attr">On Thu, Feb 27, 2020 at 7:48 PM Rakesh Gandhi (rgandhi=
) &lt;<a href=3D"mailto:rgandhi@cisco.com" target=3D"_blank">rgandhi@cisco.=
com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"marg=
in:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1e=
x">





<div lang=3D"EN-CA">
<div>
<p class=3D"MsoNormal">Hi Greg,<u></u><u></u></p>
<p class=3D"MsoNormal">I noticed that this STAMP TLV draft update is propos=
ing to modify the STAMP packet format to contain SSID.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></pre>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 Error Estimate=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 SSID=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0 |<u></u><u></u></pre>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></pre>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">The SRPM draft posted in December had already propos=
ed to use the same field for control-code.<u></u><u></u></p>
<p class=3D"MsoNormal"><a href=3D"https://tools.ietf.org/html/draft-gandhi-=
spring-twamp-srpm-05" target=3D"_blank">https://tools.ietf.org/html/draft-g=
andhi-spring-twamp-srpm-05</a><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 .=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 Error Estimate=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | Reserv=
ed=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0 Control Code |<u></u><u></u></span=
></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 .=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Looks like there is a conflict in packet format upda=
te proposed that need to sort out.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Thanks,<u></u><u></u></p>
<p class=3D"MsoNormal">Rakesh<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div style=3D"border-color:rgb(181,196,223) currentcolor currentcolor;borde=
r-style:solid none none;border-width:1pt medium medium;padding:3pt 0cm 0cm"=
>
<p class=3D"MsoNormal"><b><span style=3D"font-size:12pt;color:black">From: =
</span></b><span style=3D"font-size:12pt;color:black">ippm &lt;<a href=3D"m=
ailto:ippm-bounces@ietf.org" target=3D"_blank">ippm-bounces@ietf.org</a>&gt=
; on behalf of Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" tar=
get=3D"_blank">gregimirsky@gmail.com</a>&gt;<br>
<b>Date: </b>Friday, February 21, 2020 at 11:07 AM<br>
<b>To: </b>IETF IPPM WG &lt;<a href=3D"mailto:ippm@ietf.org" target=3D"_bla=
nk">ippm@ietf.org</a>&gt;<br>
<b>Subject: </b>[ippm] Fwd: New Version Notification for draft-ietf-ippm-st=
amp-option-tlv-03.txt<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Dear All, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal">the new version includes updates to the Followup Tel=
emetry TLV and introduces the new HMAC TLV.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">We always welcome and greatly appreciate your commen=
ts, questions, and suggestions.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt">Greg<u></u><u></u></p>
<div>
<div>
<p class=3D"MsoNormal">---------- Forwarded message ---------<br>
From: &lt;<a href=3D"mailto:internet-drafts@ietf.org" target=3D"_blank">int=
ernet-drafts@ietf.org</a>&gt;<br>
Date: Fri, Feb 21, 2020 at 8:04 AM<br>
Subject: New Version Notification for draft-ietf-ippm-stamp-option-tlv-03.t=
xt<br>
To: Henrik Nydell &lt;<a href=3D"mailto:hnydell@accedian..com" target=3D"_b=
lank">hnydell@accedian.com</a>&gt;, Min Xiao &lt;<a href=3D"mailto:xiao.min=
2@zte.com.cn" target=3D"_blank">xiao.min2@zte.com.cn</a>&gt;, Adi Masputra =
&lt;<a href=3D"mailto:adi@apple.com" target=3D"_blank">adi@apple.com</a>&gt=
;, Ernesto Ruffini &lt;<a href=3D"mailto:eruffini@outsys.org" target=3D"_bl=
ank">eruffini@outsys.org</a>&gt;,
 Gregory Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_bla=
nk">gregimirsky@gmail.com</a>&gt;, Richard Foote &lt;<a href=3D"mailto:foot=
er.foote@nokia.com" target=3D"_blank">footer.foote@nokia.com</a>&gt;<u></u>=
<u></u></p>
</div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt"><br>
<br>
<br>
A new version of I-D, draft-ietf-ippm-stamp-option-tlv-03.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-ippm-stamp-option-=
tlv<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A003<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Simple Two-way Active Measurement =
Protocol Optional Extensions<br>
Document date:=C2=A0 2020-02-21<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 ippm<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 25<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.txt" target=3D"_blan=
k">
https://www.ietf.org/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.tx=
t</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ietf-ippm-stamp-option-tlv/" target=3D"_blank">https://data=
tracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ietf-ippm-stamp-option-tlv-03" target=3D"_blank">https://tools.ietf.o=
rg/html/draft-ietf-ippm-stamp-option-tlv-03</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ietf-ippm-stamp-option-tlv" target=3D"_blank">https://datat=
racker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tlv</a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ietf-ippm-stamp-option-tlv-03" target=3D"_blank">ht=
tps://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-ippm-stamp-option-tlv-03</a><b=
r>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document describes optional extensions to Simple Two-way =
Active<br>
=C2=A0 =C2=A0Measurement Protocol (STAMP) which enable measurement performa=
nce<br>
=C2=A0 =C2=A0metrics in addition to ones supported by the STAMP base<br>
=C2=A0 =C2=A0specification.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" target=3D"_blank">
tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>

</blockquote></div>
_______________________________________________<br>
ippm mailing list<br>
<a href=3D"mailto:ippm@ietf.org" target=3D"_blank">ippm@ietf.org</a><br>
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arget=3D"_blank">https://www.ietf.org/mailman/listinfo/ippm</a><br>
</blockquote></div>

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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Fri, 28 Feb 2020 12:12:29 -0800
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To: Rakesh Gandhi <rgandhi.ietf@gmail.com>, IPPM Chairs <ippm-chairs@ietf.org>, spring-chairs@ietf.org
Cc: "Rakesh Gandhi (rgandhi)" <rgandhi@cisco.com>, IETF IPPM WG <ippm@ietf.org>
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Subject: Re: [ippm] Fwd: New Version Notification for draft-ietf-ippm-stamp-option-tlv-03.txt
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--000000000000a781b0059fa87572
Content-Type: text/plain; charset="UTF-8"

Hi Rakesh,
thank you for your expedient clarification. I think that one assumption
made in your draft requires very careful consideration by IPPM WG that had
worked on STAMP for quite some time already. Here's the paragraph that
raises a question:
   The loss measurement probe and query messages defined in this
   document are also equally applicable to STAMP and STAMP TLVs, and use
   the message formats defined in [I-D.ippm-stamp].
As I understand, you've planned to anchor this work at SPRING WG though you
propose to update documents developed in IPPM WG. Perhaps Chars of these
two WGs will discuss and suggest to you on the appropriate WG to host this
draft.
As for the proposed changes to STAMP, I believe that these should be
handled with lots of caution and we encourage authors to make the use of
the STAMP extension mechanism provided by TLVs.

Regards,
Greg

On Fri, Feb 28, 2020 at 10:10 AM Rakesh Gandhi <rgandhi.ietf@gmail.com>
wrote:

> Hi Greg,
> Thanks for your reply.
> The draft-gandhi-spring-twamp-srpm includes both TWAMP Light and STAMP
> (Section 3.2) (TLVs for STAMP in other sections). Two drafts are updating
> the same field in the STAMP packet format.
> Thanks,
> Rakesh
>
>
> On Thu, Feb 27, 2020 at 11:14 PM Greg Mirsky <gregimirsky@gmail.com>
> wrote:
>
>> Hi Rakesh,
>> thank you for your interest in the update to STAMP extensions. Can you
>> elaborate on where you see the conflict between STAMP and your proposal? Is
>> the change you've proposed applicable to STAMP test packet? As far as I
>> understand, STAMP cannot support your proposal and interwork with a system
>> that is complaint with draft-gandhi-spring-twamp-srpm. As for STAP
>> interworking with TWAMP in Unauthenticated mode, SSID doesn't change
>> anything, as TWAMP Session-Sender will zero the field and Session-Reflector
>> will ignore it on receipt. So I don't see conflict here at all. I greatly
>> appreciate your clarification.
>>
>> Regards,
>> Greg
>>
>> On Thu, Feb 27, 2020 at 7:48 PM Rakesh Gandhi (rgandhi) <
>> rgandhi@cisco.com> wrote:
>>
>>> Hi Greg,
>>>
>>> I noticed that this STAMP TLV draft update is proposing to modify the
>>> STAMP packet format to contain SSID.
>>>
>>>
>>>
>>>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>
>>>       |         Error Estimate        |             SSID              |
>>>
>>>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>
>>>
>>>
>>> The SRPM draft posted in December had already proposed to use the same
>>> field for control-code.
>>>
>>> https://tools.ietf.org/html/draft-gandhi-spring-twamp-srpm-05
>>>
>>>     .                                                               .
>>>
>>>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>
>>>     |         Error Estimate        | Reserved      |  Control Code |
>>>
>>>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>
>>>     .
>>>
>>>
>>>
>>> Looks like there is a conflict in packet format update proposed that
>>> need to sort out.
>>>
>>>
>>>
>>> Thanks,
>>>
>>> Rakesh
>>>
>>>
>>>
>>>
>>>
>>> *From: *ippm <ippm-bounces@ietf.org> on behalf of Greg Mirsky <
>>> gregimirsky@gmail.com>
>>> *Date: *Friday, February 21, 2020 at 11:07 AM
>>> *To: *IETF IPPM WG <ippm@ietf.org>
>>> *Subject: *[ippm] Fwd: New Version Notification for
>>> draft-ietf-ippm-stamp-option-tlv-03.txt
>>>
>>>
>>>
>>> Dear All,
>>>
>>> the new version includes updates to the Followup Telemetry TLV and
>>> introduces the new HMAC TLV.
>>>
>>> We always welcome and greatly appreciate your comments, questions, and
>>> suggestions.
>>>
>>>
>>>
>>> Regards,
>>>
>>> Greg
>>>
>>> ---------- Forwarded message ---------
>>> From: <internet-drafts@ietf.org>
>>> Date: Fri, Feb 21, 2020 at 8:04 AM
>>> Subject: New Version Notification for
>>> draft-ietf-ippm-stamp-option-tlv-03.txt
>>> To: Henrik Nydell <hnydell@accedian.com <hnydell@accedian..com>>, Min
>>> Xiao <xiao.min2@zte.com.cn>, Adi Masputra <adi@apple.com>, Ernesto
>>> Ruffini <eruffini@outsys.org>, Gregory Mirsky <gregimirsky@gmail.com>,
>>> Richard Foote <footer.foote@nokia.com>
>>>
>>>
>>>
>>>
>>> A new version of I-D, draft-ietf-ippm-stamp-option-tlv-03.txt
>>> has been successfully submitted by Greg Mirsky and posted to the
>>> IETF repository.
>>>
>>> Name:           draft-ietf-ippm-stamp-option-tlv
>>> Revision:       03
>>> Title:          Simple Two-way Active Measurement Protocol Optional
>>> Extensions
>>> Document date:  2020-02-21
>>> Group:          ippm
>>> Pages:          25
>>> URL:
>>> https://www.ietf.org/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.txt
>>> Status:
>>> https://datatracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/
>>> Htmlized:
>>> https://tools.ietf.org/html/draft-ietf-ippm-stamp-option-tlv-03
>>> Htmlized:
>>> https://datatracker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tlv
>>> Diff:
>>> https://www.ietf.org/rfcdiff?url2=draft-ietf-ippm-stamp-option-tlv-03
>>>
>>> Abstract:
>>>    This document describes optional extensions to Simple Two-way Active
>>>    Measurement Protocol (STAMP) which enable measurement performance
>>>    metrics in addition to ones supported by the STAMP base
>>>    specification.
>>>
>>>
>>>
>>>
>>> Please note that it may take a couple of minutes from the time of
>>> submission
>>> until the htmlized version and diff are available at tools.ietf.org.
>>>
>>> The IETF Secretariat
>>>
>> _______________________________________________
>> ippm mailing list
>> ippm@ietf.org
>> https://www.ietf.org/mailman/listinfo/ippm
>>
>

--000000000000a781b0059fa87572
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Rakesh,<div>thank you for your expedient clarification.=
 I think that one assumption made in your draft requires very careful consi=
deration by IPPM WG that had worked on STAMP for quite some time already. H=
ere&#39;s the paragraph that raises a question:</div><div>=C2=A0 =C2=A0The =
loss measurement probe and query messages defined in this<br>=C2=A0 =C2=A0d=
ocument are also equally applicable to STAMP and STAMP TLVs, and use<br>=C2=
=A0 =C2=A0the message formats defined in [I-D.ippm-stamp].<br></div><div>As=
 I understand, you&#39;ve planned to anchor this work at SPRING WG though y=
ou propose to update documents developed in IPPM WG. Perhaps Chars of these=
 two WGs will discuss and suggest to you on the appropriate WG to host this=
 draft.</div><div>As for the proposed changes to STAMP, I believe that thes=
e should be handled with lots of caution and we encourage authors to make t=
he use of the STAMP extension mechanism provided by TLVs.</div><div><br></d=
iv><div>Regards,</div><div>Greg</div></div><br><div class=3D"gmail_quote"><=
div dir=3D"ltr" class=3D"gmail_attr">On Fri, Feb 28, 2020 at 10:10 AM Rakes=
h Gandhi &lt;<a href=3D"mailto:rgandhi.ietf@gmail.com">rgandhi.ietf@gmail.c=
om</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margi=
n:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex=
"><div dir=3D"ltr"><div>Hi Greg,</div><div>Thanks for your reply.</div><div=
>The draft-gandhi-spring-twamp-srpm includes both TWAMP Light and STAMP (Se=
ction 3.2) (TLVs for STAMP in other sections). Two drafts are updating the =
same field in the STAMP packet format. <br></div><div>Thanks,</div><div>Rak=
esh<br></div><div><br></div></div><br><div class=3D"gmail_quote"><div dir=
=3D"ltr" class=3D"gmail_attr">On Thu, Feb 27, 2020 at 11:14 PM Greg Mirsky =
&lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@=
gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding=
-left:1ex"><div dir=3D"ltr">Hi Rakesh,<div>thank you for your interest in t=
he update to STAMP extensions. Can you elaborate on where you see the confl=
ict between STAMP and your proposal? Is the change you&#39;ve proposed appl=
icable to STAMP test packet? As far as I understand, STAMP cannot support y=
our proposal and interwork with a system that is complaint with draft-gandh=
i-spring-twamp-srpm. As for STAP interworking with TWAMP in Unauthenticated=
 mode, SSID doesn&#39;t change anything, as TWAMP Session-Sender will zero =
the field and Session-Reflector will ignore it on receipt. So I don&#39;t s=
ee conflict here at all. I greatly appreciate your clarification.</div><div=
><br></div><div>Regards,</div><div>Greg</div></div><br><div class=3D"gmail_=
quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Feb 27, 2020 at 7:48 P=
M Rakesh Gandhi (rgandhi) &lt;<a href=3D"mailto:rgandhi@cisco.com" target=
=3D"_blank">rgandhi@cisco.com</a>&gt; wrote:<br></div><blockquote class=3D"=
gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(20=
4,204,204);padding-left:1ex">





<div lang=3D"EN-CA">
<div>
<p class=3D"MsoNormal">Hi Greg,<u></u><u></u></p>
<p class=3D"MsoNormal">I noticed that this STAMP TLV draft update is propos=
ing to modify the STAMP packet format to contain SSID.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></pre>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 Error Estimate=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 SSID=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0 |<u></u><u></u></pre>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></pre>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">The SRPM draft posted in December had already propos=
ed to use the same field for control-code.<u></u><u></u></p>
<p class=3D"MsoNormal"><a href=3D"https://tools.ietf.org/html/draft-gandhi-=
spring-twamp-srpm-05" target=3D"_blank">https://tools.ietf.org/html/draft-g=
andhi-spring-twamp-srpm-05</a><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 .=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 Error Estimate=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | Reserv=
ed=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0 Control Code |<u></u><u></u></span=
></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 .=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Looks like there is a conflict in packet format upda=
te proposed that need to sort out.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Thanks,<u></u><u></u></p>
<p class=3D"MsoNormal">Rakesh<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div style=3D"border-color:rgb(181,196,223) currentcolor currentcolor;borde=
r-style:solid none none;border-width:1pt medium medium;padding:3pt 0cm 0cm"=
>
<p class=3D"MsoNormal"><b><span style=3D"font-size:12pt;color:black">From: =
</span></b><span style=3D"font-size:12pt;color:black">ippm &lt;<a href=3D"m=
ailto:ippm-bounces@ietf.org" target=3D"_blank">ippm-bounces@ietf.org</a>&gt=
; on behalf of Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" tar=
get=3D"_blank">gregimirsky@gmail.com</a>&gt;<br>
<b>Date: </b>Friday, February 21, 2020 at 11:07 AM<br>
<b>To: </b>IETF IPPM WG &lt;<a href=3D"mailto:ippm@ietf.org" target=3D"_bla=
nk">ippm@ietf.org</a>&gt;<br>
<b>Subject: </b>[ippm] Fwd: New Version Notification for draft-ietf-ippm-st=
amp-option-tlv-03.txt<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Dear All, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal">the new version includes updates to the Followup Tel=
emetry TLV and introduces the new HMAC TLV.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">We always welcome and greatly appreciate your commen=
ts, questions, and suggestions.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt">Greg<u></u><u></u></p>
<div>
<div>
<p class=3D"MsoNormal">---------- Forwarded message ---------<br>
From: &lt;<a href=3D"mailto:internet-drafts@ietf.org" target=3D"_blank">int=
ernet-drafts@ietf.org</a>&gt;<br>
Date: Fri, Feb 21, 2020 at 8:04 AM<br>
Subject: New Version Notification for draft-ietf-ippm-stamp-option-tlv-03.t=
xt<br>
To: Henrik Nydell &lt;<a href=3D"mailto:hnydell@accedian..com" target=3D"_b=
lank">hnydell@accedian.com</a>&gt;, Min Xiao &lt;<a href=3D"mailto:xiao.min=
2@zte.com.cn" target=3D"_blank">xiao.min2@zte.com.cn</a>&gt;, Adi Masputra =
&lt;<a href=3D"mailto:adi@apple.com" target=3D"_blank">adi@apple.com</a>&gt=
;, Ernesto Ruffini &lt;<a href=3D"mailto:eruffini@outsys.org" target=3D"_bl=
ank">eruffini@outsys.org</a>&gt;,
 Gregory Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_bla=
nk">gregimirsky@gmail.com</a>&gt;, Richard Foote &lt;<a href=3D"mailto:foot=
er.foote@nokia.com" target=3D"_blank">footer.foote@nokia.com</a>&gt;<u></u>=
<u></u></p>
</div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt"><br>
<br>
<br>
A new version of I-D, draft-ietf-ippm-stamp-option-tlv-03.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-ippm-stamp-option-=
tlv<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A003<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Simple Two-way Active Measurement =
Protocol Optional Extensions<br>
Document date:=C2=A0 2020-02-21<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 ippm<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 25<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.txt" target=3D"_blan=
k">
https://www.ietf.org/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.tx=
t</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ietf-ippm-stamp-option-tlv/" target=3D"_blank">https://data=
tracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ietf-ippm-stamp-option-tlv-03" target=3D"_blank">https://tools.ietf.o=
rg/html/draft-ietf-ippm-stamp-option-tlv-03</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ietf-ippm-stamp-option-tlv" target=3D"_blank">https://datat=
racker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tlv</a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ietf-ippm-stamp-option-tlv-03" target=3D"_blank">ht=
tps://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-ippm-stamp-option-tlv-03</a><b=
r>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document describes optional extensions to Simple Two-way =
Active<br>
=C2=A0 =C2=A0Measurement Protocol (STAMP) which enable measurement performa=
nce<br>
=C2=A0 =C2=A0metrics in addition to ones supported by the STAMP base<br>
=C2=A0 =C2=A0specification.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" target=3D"_blank">
tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>

</blockquote></div>
_______________________________________________<br>
ippm mailing list<br>
<a href=3D"mailto:ippm@ietf.org" target=3D"_blank">ippm@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/ippm" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/ippm</a><br>
</blockquote></div>
</blockquote></div>

--000000000000a781b0059fa87572--


From nobody Fri Feb 28 14:35:28 2020
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Dear Tommy Pauly,

The session(s) that you have requested have been scheduled.
Below is the scheduled session information followed by
the original request. 


    ippm Session 1 (2:00 requested)
    Monday, 23 March 2020, Afternoon Session II 1550-1750
    Room Name: Georgia A size: 100
    ---------------------------------------------


iCalendar: https://datatracker.ietf.org/meeting/107/sessions/ippm.ics

Request Information:


---------------------------------------------------------
Working Group Name: IP Performance Measurement
Area Name: Transport Area
Session Requester: Tommy Pauly

Number of Sessions: 1
Length of Session(s):  2 Hours
Number of Attendees: 60
Conflicts to Avoid: 
 Chair Conflict: httpbis taps quic intarea maprg panrg tsvarea tsvwg capport
 Technology Overlap: 6man bfd bmwg v6ops opsec spring
 Key Participant Conflict: mpls


People who must be present:
  Alfred Channon Morton
  Frank Brockners
  Brian Trammell
  Mirja Kuehlewind
  Bill Cerveny
  Giuseppe Fioccola
  Tommy Pauly
  Greg Mirsky &lt;gregimirsky@gmail.com&gt;&gt;

Resources Requested:

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



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From: Rakesh Gandhi <rgandhi.ietf@gmail.com>
Date: Fri, 28 Feb 2020 18:40:44 -0500
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To: Greg Mirsky <gregimirsky@gmail.com>
Cc: IPPM Chairs <ippm-chairs@ietf.org>, spring-chairs@ietf.org,  "Rakesh Gandhi (rgandhi)" <rgandhi@cisco.com>, IETF IPPM WG <ippm@ietf.org>
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--00000000000073874d059fab5e5b
Content-Type: text/plain; charset="UTF-8"

Hi Greg,
Thanks for your reply.
After some good discussions between the IPPM and SPRING chairs, it has
already been agreed that the draft-gandhi-spring-twamp-srpm will be hosted
in SPRING. It is captured in the chairs update at the last IETF meeting:
https://datatracker.ietf.org/meeting/106/materials/slides-106-spring-sessa-chairs-slides-01

Original purpose of the draft-ietf-ippm-stamp-option-tlv accepted as a WG
document was to define TLVs for STAMP. But now it is also modifying the
STAMP packet format. Shouldn't SSID (session ID) be in a STAMP TLV? It can
then be 32-bit number (as opposed to 16-bit) and can be used for encoding
additional information.

This way, we can keep the 16-bits available in the STAMP packet format for
future use - instead of leaving no space at all and using up all the
available bits in the message for SSID.

Recall that draft-gandhi-spring-twamp-srpm only uses one bit flag from the
16-bit field, rest is still available.

Thanks,
Rakesh


On Fri, Feb 28, 2020 at 3:12 PM Greg Mirsky <gregimirsky@gmail.com> wrote:

> Hi Rakesh,
> thank you for your expedient clarification. I think that one assumption
> made in your draft requires very careful consideration by IPPM WG that had
> worked on STAMP for quite some time already. Here's the paragraph that
> raises a question:
>    The loss measurement probe and query messages defined in this
>    document are also equally applicable to STAMP and STAMP TLVs, and use
>    the message formats defined in [I-D.ippm-stamp].
> As I understand, you've planned to anchor this work at SPRING WG though
> you propose to update documents developed in IPPM WG. Perhaps Chars of
> these two WGs will discuss and suggest to you on the appropriate WG to host
> this draft.
> As for the proposed changes to STAMP, I believe that these should be
> handled with lots of caution and we encourage authors to make the use of
> the STAMP extension mechanism provided by TLVs.
>
> Regards,
> Greg
>
> On Fri, Feb 28, 2020 at 10:10 AM Rakesh Gandhi <rgandhi.ietf@gmail.com>
> wrote:
>
>> Hi Greg,
>> Thanks for your reply.
>> The draft-gandhi-spring-twamp-srpm includes both TWAMP Light and STAMP
>> (Section 3.2) (TLVs for STAMP in other sections). Two drafts are updating
>> the same field in the STAMP packet format.
>> Thanks,
>> Rakesh
>>
>>
>> On Thu, Feb 27, 2020 at 11:14 PM Greg Mirsky <gregimirsky@gmail.com>
>> wrote:
>>
>>> Hi Rakesh,
>>> thank you for your interest in the update to STAMP extensions. Can you
>>> elaborate on where you see the conflict between STAMP and your proposal? Is
>>> the change you've proposed applicable to STAMP test packet? As far as I
>>> understand, STAMP cannot support your proposal and interwork with a system
>>> that is complaint with draft-gandhi-spring-twamp-srpm. As for STAP
>>> interworking with TWAMP in Unauthenticated mode, SSID doesn't change
>>> anything, as TWAMP Session-Sender will zero the field and Session-Reflector
>>> will ignore it on receipt. So I don't see conflict here at all. I greatly
>>> appreciate your clarification.
>>>
>>> Regards,
>>> Greg
>>>
>>> On Thu, Feb 27, 2020 at 7:48 PM Rakesh Gandhi (rgandhi) <
>>> rgandhi@cisco.com> wrote:
>>>
>>>> Hi Greg,
>>>>
>>>> I noticed that this STAMP TLV draft update is proposing to modify the
>>>> STAMP packet format to contain SSID.
>>>>
>>>>
>>>>
>>>>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>>
>>>>       |         Error Estimate        |             SSID              |
>>>>
>>>>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>>
>>>>
>>>>
>>>> The SRPM draft posted in December had already proposed to use the same
>>>> field for control-code.
>>>>
>>>> https://tools.ietf.org/html/draft-gandhi-spring-twamp-srpm-05
>>>>
>>>>     .                                                               .
>>>>
>>>>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>>
>>>>     |         Error Estimate        | Reserved      |  Control Code |
>>>>
>>>>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>>
>>>>     .
>>>>
>>>>
>>>>
>>>> Looks like there is a conflict in packet format update proposed that
>>>> need to sort out.
>>>>
>>>>
>>>>
>>>> Thanks,
>>>>
>>>> Rakesh
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *From: *ippm <ippm-bounces@ietf.org> on behalf of Greg Mirsky <
>>>> gregimirsky@gmail.com>
>>>> *Date: *Friday, February 21, 2020 at 11:07 AM
>>>> *To: *IETF IPPM WG <ippm@ietf.org>
>>>> *Subject: *[ippm] Fwd: New Version Notification for
>>>> draft-ietf-ippm-stamp-option-tlv-03.txt
>>>>
>>>>
>>>>
>>>> Dear All,
>>>>
>>>> the new version includes updates to the Followup Telemetry TLV and
>>>> introduces the new HMAC TLV.
>>>>
>>>> We always welcome and greatly appreciate your comments, questions, and
>>>> suggestions.
>>>>
>>>>
>>>>
>>>> Regards,
>>>>
>>>> Greg
>>>>
>>>> ---------- Forwarded message ---------
>>>> From: <internet-drafts@ietf.org>
>>>> Date: Fri, Feb 21, 2020 at 8:04 AM
>>>> Subject: New Version Notification for
>>>> draft-ietf-ippm-stamp-option-tlv-03.txt
>>>> To: Henrik Nydell <hnydell@accedian.com <hnydell@accedian..com>>, Min
>>>> Xiao <xiao.min2@zte.com.cn>, Adi Masputra <adi@apple.com>, Ernesto
>>>> Ruffini <eruffini@outsys.org>, Gregory Mirsky <gregimirsky@gmail.com>,
>>>> Richard Foote <footer.foote@nokia.com>
>>>>
>>>>
>>>>
>>>>
>>>> A new version of I-D, draft-ietf-ippm-stamp-option-tlv-03.txt
>>>> has been successfully submitted by Greg Mirsky and posted to the
>>>> IETF repository.
>>>>
>>>> Name:           draft-ietf-ippm-stamp-option-tlv
>>>> Revision:       03
>>>> Title:          Simple Two-way Active Measurement Protocol Optional
>>>> Extensions
>>>> Document date:  2020-02-21
>>>> Group:          ippm
>>>> Pages:          25
>>>> URL:
>>>> https://www.ietf.org/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.txt
>>>> Status:
>>>> https://datatracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/
>>>> Htmlized:
>>>> https://tools.ietf.org/html/draft-ietf-ippm-stamp-option-tlv-03
>>>> Htmlized:
>>>> https://datatracker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tlv
>>>> Diff:
>>>> https://www.ietf.org/rfcdiff?url2=draft-ietf-ippm-stamp-option-tlv-03
>>>>
>>>> Abstract:
>>>>    This document describes optional extensions to Simple Two-way Active
>>>>    Measurement Protocol (STAMP) which enable measurement performance
>>>>    metrics in addition to ones supported by the STAMP base
>>>>    specification.
>>>>
>>>>
>>>>
>>>>
>>>> Please note that it may take a couple of minutes from the time of
>>>> submission
>>>> until the htmlized version and diff are available at tools.ietf.org.
>>>>
>>>> The IETF Secretariat
>>>>
>>> _______________________________________________
>>> ippm mailing list
>>> ippm@ietf.org
>>> https://www.ietf.org/mailman/listinfo/ippm
>>>
>>

--00000000000073874d059fab5e5b
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<div dir=3D"ltr"><div dir=3D"ltr"><div>Hi Greg,</div><div>Thanks for your r=
eply.</div><div>After some good discussions between the IPPM and SPRING cha=
irs, it has already been agreed that the draft-gandhi-spring-twamp-srpm  wi=
ll be hosted in SPRING. It is captured in the chairs update at the last IET=
F meeting:</div><div><a href=3D"https://datatracker.ietf.org/meeting/106/ma=
terials/slides-106-spring-sessa-chairs-slides-01" target=3D"_blank">https:/=
/datatracker.ietf.org/meeting/106/materials/slides-106-spring-sessa-chairs-=
slides-01</a></div><div><br></div><div>Original purpose of the draft-ietf-i=
ppm-stamp-option-tlv accepted as a WG document was to define TLVs for STAMP=
. But now it is also modifying the STAMP packet format. Shouldn&#39;t SSID =
(session ID) be in a STAMP TLV? It can then be 32-bit number (as opposed to=
 16-bit) and can be used for encoding additional information.<br></div><div=
><br></div><div>This way, we can keep the 16-bits available in the STAMP pa=
cket format for future use - instead of leaving no space at all and using u=
p all the available bits in the message for SSID.<br></div><div><br></div><=
div>Recall that draft-gandhi-spring-twamp-srpm only uses one bit flag from =
the 16-bit field, rest is still available.<br></div><div><br></div><div>Tha=
nks,</div><div>Rakesh</div><div><br></div></div><br><div class=3D"gmail_quo=
te"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Feb 28, 2020 at 3:12 PM G=
reg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">g=
regimirsky@gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quo=
te" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204=
);padding-left:1ex"><div dir=3D"ltr">Hi Rakesh,<div>thank you for your expe=
dient clarification. I think that one assumption made in your draft require=
s very careful consideration by IPPM WG that had worked on STAMP for quite =
some time already. Here&#39;s the paragraph that raises a question:</div><d=
iv>=C2=A0 =C2=A0The loss measurement probe and query messages defined in th=
is<br>=C2=A0 =C2=A0document are also equally applicable to STAMP and STAMP =
TLVs, and use<br>=C2=A0 =C2=A0the message formats defined in [I-D.ippm-stam=
p].<br></div><div>As I understand, you&#39;ve planned to anchor this work a=
t SPRING WG though you propose to update documents developed in IPPM WG. Pe=
rhaps Chars of these two WGs will discuss and suggest to you on the appropr=
iate WG to host this draft.</div><div>As for the proposed changes to STAMP,=
 I believe that these should be handled with lots of caution and we encoura=
ge authors to make the use of the STAMP extension mechanism provided by TLV=
s.</div><div><br></div><div>Regards,</div><div>Greg</div></div><br><div cla=
ss=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Feb 28, 20=
20 at 10:10 AM Rakesh Gandhi &lt;<a href=3D"mailto:rgandhi.ietf@gmail.com" =
target=3D"_blank">rgandhi.ietf@gmail.com</a>&gt; wrote:<br></div><blockquot=
e class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px s=
olid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div>Hi Greg,</div=
><div>Thanks for your reply.</div><div>The draft-gandhi-spring-twamp-srpm i=
ncludes both TWAMP Light and STAMP (Section 3.2) (TLVs for STAMP in other s=
ections). Two drafts are updating the same field in the STAMP packet format=
. <br></div><div>Thanks,</div><div>Rakesh<br></div><div><br></div></div><br=
><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, F=
eb 27, 2020 at 11:14 PM Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail=
.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt; wrote:<br></div><bloc=
kquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:=
1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">Hi Rakesh,<di=
v>thank you for your interest in the update to STAMP extensions. Can you el=
aborate on where you see the conflict between STAMP and your proposal? Is t=
he change you&#39;ve proposed applicable to STAMP test packet? As far as I =
understand, STAMP cannot support your proposal and interwork with a system =
that is complaint with draft-gandhi-spring-twamp-srpm. As for STAP interwor=
king with TWAMP in Unauthenticated mode, SSID doesn&#39;t change anything, =
as TWAMP Session-Sender will zero the field and Session-Reflector will igno=
re it on receipt. So I don&#39;t see conflict here at all. I greatly apprec=
iate your clarification.</div><div><br></div><div>Regards,</div><div>Greg</=
div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_at=
tr">On Thu, Feb 27, 2020 at 7:48 PM Rakesh Gandhi (rgandhi) &lt;<a href=3D"=
mailto:rgandhi@cisco.com" target=3D"_blank">rgandhi@cisco.com</a>&gt; wrote=
:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.=
8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">





<div lang=3D"EN-CA">
<div>
<p class=3D"MsoNormal">Hi Greg,<u></u><u></u></p>
<p class=3D"MsoNormal">I noticed that this STAMP TLV draft update is propos=
ing to modify the STAMP packet format to contain SSID.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></pre>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 Error Estimate=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 SSID=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0 |<u></u><u></u></pre>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></pre>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">The SRPM draft posted in December had already propos=
ed to use the same field for control-code.<u></u><u></u></p>
<p class=3D"MsoNormal"><a href=3D"https://tools.ietf.org/html/draft-gandhi-=
spring-twamp-srpm-05" target=3D"_blank">https://tools.ietf.org/html/draft-g=
andhi-spring-twamp-srpm-05</a><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 .=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 Error Estimate=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | Reserv=
ed=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0 Control Code |<u></u><u></u></span=
></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 .=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Looks like there is a conflict in packet format upda=
te proposed that need to sort out.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Thanks,<u></u><u></u></p>
<p class=3D"MsoNormal">Rakesh<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div style=3D"border-color:rgb(181,196,223) currentcolor currentcolor;borde=
r-style:solid none none;border-width:1pt medium medium;padding:3pt 0cm 0cm"=
>
<p class=3D"MsoNormal"><b><span style=3D"font-size:12pt;color:black">From: =
</span></b><span style=3D"font-size:12pt;color:black">ippm &lt;<a href=3D"m=
ailto:ippm-bounces@ietf.org" target=3D"_blank">ippm-bounces@ietf.org</a>&gt=
; on behalf of Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" tar=
get=3D"_blank">gregimirsky@gmail.com</a>&gt;<br>
<b>Date: </b>Friday, February 21, 2020 at 11:07 AM<br>
<b>To: </b>IETF IPPM WG &lt;<a href=3D"mailto:ippm@ietf.org" target=3D"_bla=
nk">ippm@ietf.org</a>&gt;<br>
<b>Subject: </b>[ippm] Fwd: New Version Notification for draft-ietf-ippm-st=
amp-option-tlv-03.txt<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Dear All, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal">the new version includes updates to the Followup Tel=
emetry TLV and introduces the new HMAC TLV.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">We always welcome and greatly appreciate your commen=
ts, questions, and suggestions.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt">Greg<u></u><u></u></p>
<div>
<div>
<p class=3D"MsoNormal">---------- Forwarded message ---------<br>
From: &lt;<a href=3D"mailto:internet-drafts@ietf.org" target=3D"_blank">int=
ernet-drafts@ietf.org</a>&gt;<br>
Date: Fri, Feb 21, 2020 at 8:04 AM<br>
Subject: New Version Notification for draft-ietf-ippm-stamp-option-tlv-03.t=
xt<br>
To: Henrik Nydell &lt;<a href=3D"mailto:hnydell@accedian..com" target=3D"_b=
lank">hnydell@accedian.com</a>&gt;, Min Xiao &lt;<a href=3D"mailto:xiao.min=
2@zte.com.cn" target=3D"_blank">xiao.min2@zte.com.cn</a>&gt;, Adi Masputra =
&lt;<a href=3D"mailto:adi@apple.com" target=3D"_blank">adi@apple.com</a>&gt=
;, Ernesto Ruffini &lt;<a href=3D"mailto:eruffini@outsys.org" target=3D"_bl=
ank">eruffini@outsys.org</a>&gt;,
 Gregory Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_bla=
nk">gregimirsky@gmail.com</a>&gt;, Richard Foote &lt;<a href=3D"mailto:foot=
er.foote@nokia.com" target=3D"_blank">footer.foote@nokia.com</a>&gt;<u></u>=
<u></u></p>
</div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt"><br>
<br>
<br>
A new version of I-D, draft-ietf-ippm-stamp-option-tlv-03.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-ippm-stamp-option-=
tlv<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A003<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Simple Two-way Active Measurement =
Protocol Optional Extensions<br>
Document date:=C2=A0 2020-02-21<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 ippm<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 25<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.txt" target=3D"_blan=
k">
https://www.ietf.org/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.tx=
t</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ietf-ippm-stamp-option-tlv/" target=3D"_blank">https://data=
tracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ietf-ippm-stamp-option-tlv-03" target=3D"_blank">https://tools.ietf.o=
rg/html/draft-ietf-ippm-stamp-option-tlv-03</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ietf-ippm-stamp-option-tlv" target=3D"_blank">https://datat=
racker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tlv</a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ietf-ippm-stamp-option-tlv-03" target=3D"_blank">ht=
tps://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-ippm-stamp-option-tlv-03</a><b=
r>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document describes optional extensions to Simple Two-way =
Active<br>
=C2=A0 =C2=A0Measurement Protocol (STAMP) which enable measurement performa=
nce<br>
=C2=A0 =C2=A0metrics in addition to ones supported by the STAMP base<br>
=C2=A0 =C2=A0specification.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" target=3D"_blank">
tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>

</blockquote></div>
_______________________________________________<br>
ippm mailing list<br>
<a href=3D"mailto:ippm@ietf.org" target=3D"_blank">ippm@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/ippm" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/ippm</a><br>
</blockquote></div>
</blockquote></div>
</blockquote></div>
</div>

--00000000000073874d059fab5e5b--


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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Fri, 28 Feb 2020 15:56:56 -0800
Message-ID: <CA+RyBmXkUF6+Lq990gMWRPs8UjSzLu_UJ-Nvi82-U1zBfbNtuQ@mail.gmail.com>
To: Rakesh Gandhi <rgandhi.ietf@gmail.com>
Cc: IPPM Chairs <ippm-chairs@ietf.org>, spring-chairs@ietf.org,  "Rakesh Gandhi (rgandhi)" <rgandhi@cisco.com>, IETF IPPM WG <ippm@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/ippm/v9JVxTFDEWfSSeJuLdZ1vtin6Vc>
Subject: Re: [ippm] Fwd: New Version Notification for draft-ietf-ippm-stamp-option-tlv-03.txt
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Hi Rakesh,
thank you for reminding me of the decision WGs chairs made.
Your questions about SSID are greatly appreciated. Authors of the STAMP TLV
draft have discussed where to place the SSID field, and our proposal is
reflected in the updated draft. I'll present it at the IPPM WG meeting and
will be glad to discuss and answer any questions.

Regards,
Greg

On Fri, Feb 28, 2020 at 3:40 PM Rakesh Gandhi <rgandhi.ietf@gmail.com>
wrote:

> Hi Greg,
> Thanks for your reply.
> After some good discussions between the IPPM and SPRING chairs, it has
> already been agreed that the draft-gandhi-spring-twamp-srpm will be hosted
> in SPRING. It is captured in the chairs update at the last IETF meeting:
>
> https://datatracker.ietf.org/meeting/106/materials/slides-106-spring-sessa-chairs-slides-01
>
> Original purpose of the draft-ietf-ippm-stamp-option-tlv accepted as a WG
> document was to define TLVs for STAMP. But now it is also modifying the
> STAMP packet format. Shouldn't SSID (session ID) be in a STAMP TLV? It can
> then be 32-bit number (as opposed to 16-bit) and can be used for encoding
> additional information.
>
> This way, we can keep the 16-bits available in the STAMP packet format for
> future use - instead of leaving no space at all and using up all the
> available bits in the message for SSID.
>
> Recall that draft-gandhi-spring-twamp-srpm only uses one bit flag from the
> 16-bit field, rest is still available.
>
> Thanks,
> Rakesh
>
>
> On Fri, Feb 28, 2020 at 3:12 PM Greg Mirsky <gregimirsky@gmail.com> wrote:
>
>> Hi Rakesh,
>> thank you for your expedient clarification. I think that one assumption
>> made in your draft requires very careful consideration by IPPM WG that had
>> worked on STAMP for quite some time already. Here's the paragraph that
>> raises a question:
>>    The loss measurement probe and query messages defined in this
>>    document are also equally applicable to STAMP and STAMP TLVs, and use
>>    the message formats defined in [I-D.ippm-stamp].
>> As I understand, you've planned to anchor this work at SPRING WG though
>> you propose to update documents developed in IPPM WG. Perhaps Chars of
>> these two WGs will discuss and suggest to you on the appropriate WG to host
>> this draft.
>> As for the proposed changes to STAMP, I believe that these should be
>> handled with lots of caution and we encourage authors to make the use of
>> the STAMP extension mechanism provided by TLVs.
>>
>> Regards,
>> Greg
>>
>> On Fri, Feb 28, 2020 at 10:10 AM Rakesh Gandhi <rgandhi.ietf@gmail.com>
>> wrote:
>>
>>> Hi Greg,
>>> Thanks for your reply.
>>> The draft-gandhi-spring-twamp-srpm includes both TWAMP Light and STAMP
>>> (Section 3.2) (TLVs for STAMP in other sections). Two drafts are updating
>>> the same field in the STAMP packet format.
>>> Thanks,
>>> Rakesh
>>>
>>>
>>> On Thu, Feb 27, 2020 at 11:14 PM Greg Mirsky <gregimirsky@gmail.com>
>>> wrote:
>>>
>>>> Hi Rakesh,
>>>> thank you for your interest in the update to STAMP extensions. Can you
>>>> elaborate on where you see the conflict between STAMP and your proposal? Is
>>>> the change you've proposed applicable to STAMP test packet? As far as I
>>>> understand, STAMP cannot support your proposal and interwork with a system
>>>> that is complaint with draft-gandhi-spring-twamp-srpm. As for STAP
>>>> interworking with TWAMP in Unauthenticated mode, SSID doesn't change
>>>> anything, as TWAMP Session-Sender will zero the field and Session-Reflector
>>>> will ignore it on receipt. So I don't see conflict here at all. I greatly
>>>> appreciate your clarification.
>>>>
>>>> Regards,
>>>> Greg
>>>>
>>>> On Thu, Feb 27, 2020 at 7:48 PM Rakesh Gandhi (rgandhi) <
>>>> rgandhi@cisco.com> wrote:
>>>>
>>>>> Hi Greg,
>>>>>
>>>>> I noticed that this STAMP TLV draft update is proposing to modify the
>>>>> STAMP packet format to contain SSID.
>>>>>
>>>>>
>>>>>
>>>>>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>>>
>>>>>       |         Error Estimate        |             SSID              |
>>>>>
>>>>>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>>>
>>>>>
>>>>>
>>>>> The SRPM draft posted in December had already proposed to use the same
>>>>> field for control-code.
>>>>>
>>>>> https://tools.ietf.org/html/draft-gandhi-spring-twamp-srpm-05
>>>>>
>>>>>     .                                                               .
>>>>>
>>>>>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>>>
>>>>>     |         Error Estimate        | Reserved      |  Control Code |
>>>>>
>>>>>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>>>
>>>>>     .
>>>>>
>>>>>
>>>>>
>>>>> Looks like there is a conflict in packet format update proposed that
>>>>> need to sort out.
>>>>>
>>>>>
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Rakesh
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> *From: *ippm <ippm-bounces@ietf.org> on behalf of Greg Mirsky <
>>>>> gregimirsky@gmail.com>
>>>>> *Date: *Friday, February 21, 2020 at 11:07 AM
>>>>> *To: *IETF IPPM WG <ippm@ietf.org>
>>>>> *Subject: *[ippm] Fwd: New Version Notification for
>>>>> draft-ietf-ippm-stamp-option-tlv-03.txt
>>>>>
>>>>>
>>>>>
>>>>> Dear All,
>>>>>
>>>>> the new version includes updates to the Followup Telemetry TLV and
>>>>> introduces the new HMAC TLV.
>>>>>
>>>>> We always welcome and greatly appreciate your comments, questions, and
>>>>> suggestions.
>>>>>
>>>>>
>>>>>
>>>>> Regards,
>>>>>
>>>>> Greg
>>>>>
>>>>> ---------- Forwarded message ---------
>>>>> From: <internet-drafts@ietf.org>
>>>>> Date: Fri, Feb 21, 2020 at 8:04 AM
>>>>> Subject: New Version Notification for
>>>>> draft-ietf-ippm-stamp-option-tlv-03.txt
>>>>> To: Henrik Nydell <hnydell@accedian.com <hnydell@accedian..com>>, Min
>>>>> Xiao <xiao.min2@zte.com.cn>, Adi Masputra <adi@apple.com>, Ernesto
>>>>> Ruffini <eruffini@outsys.org>, Gregory Mirsky <gregimirsky@gmail.com>,
>>>>> Richard Foote <footer.foote@nokia.com>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> A new version of I-D, draft-ietf-ippm-stamp-option-tlv-03.txt
>>>>> has been successfully submitted by Greg Mirsky and posted to the
>>>>> IETF repository.
>>>>>
>>>>> Name:           draft-ietf-ippm-stamp-option-tlv
>>>>> Revision:       03
>>>>> Title:          Simple Two-way Active Measurement Protocol Optional
>>>>> Extensions
>>>>> Document date:  2020-02-21
>>>>> Group:          ippm
>>>>> Pages:          25
>>>>> URL:
>>>>> https://www.ietf.org/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.txt
>>>>> Status:
>>>>> https://datatracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/
>>>>> Htmlized:
>>>>> https://tools.ietf.org/html/draft-ietf-ippm-stamp-option-tlv-03
>>>>> Htmlized:
>>>>> https://datatracker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tlv
>>>>> Diff:
>>>>> https://www.ietf.org/rfcdiff?url2=draft-ietf-ippm-stamp-option-tlv-03
>>>>>
>>>>> Abstract:
>>>>>    This document describes optional extensions to Simple Two-way Active
>>>>>    Measurement Protocol (STAMP) which enable measurement performance
>>>>>    metrics in addition to ones supported by the STAMP base
>>>>>    specification.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Please note that it may take a couple of minutes from the time of
>>>>> submission
>>>>> until the htmlized version and diff are available at tools.ietf.org.
>>>>>
>>>>> The IETF Secretariat
>>>>>
>>>> _______________________________________________
>>>> ippm mailing list
>>>> ippm@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/ippm
>>>>
>>>

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Content-Type: text/html; charset="UTF-8"
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<div dir=3D"ltr">Hi Rakesh,<br>thank you for reminding me of the decision W=
Gs chairs made.<br>Your questions about SSID are greatly appreciated. Autho=
rs of the STAMP TLV draft have discussed where to place the SSID field, and=
 our proposal is reflected in the updated draft. I&#39;ll present it at the=
 IPPM WG meeting and will be glad to discuss and answer any questions.<br><=
div></div><div><br></div><div>Regards,</div><div>Greg</div></div><br><div c=
lass=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Feb 28, =
2020 at 3:40 PM Rakesh Gandhi &lt;<a href=3D"mailto:rgandhi.ietf@gmail.com"=
>rgandhi.ietf@gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_=
quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,=
204);padding-left:1ex"><div dir=3D"ltr"><div dir=3D"ltr"><div>Hi Greg,</div=
><div>Thanks for your reply.</div><div>After some good discussions between =
the IPPM and SPRING chairs, it has already been agreed that the draft-gandh=
i-spring-twamp-srpm  will be hosted in SPRING. It is captured in the chairs=
 update at the last IETF meeting:</div><div><a href=3D"https://datatracker.=
ietf.org/meeting/106/materials/slides-106-spring-sessa-chairs-slides-01" ta=
rget=3D"_blank">https://datatracker.ietf.org/meeting/106/materials/slides-1=
06-spring-sessa-chairs-slides-01</a></div><div><br></div><div>Original purp=
ose of the draft-ietf-ippm-stamp-option-tlv accepted as a WG document was t=
o define TLVs for STAMP. But now it is also modifying the STAMP packet form=
at. Shouldn&#39;t SSID (session ID) be in a STAMP TLV? It can then be 32-bi=
t number (as opposed to 16-bit) and can be used for encoding additional inf=
ormation.<br></div><div><br></div><div>This way, we can keep the 16-bits av=
ailable in the STAMP packet format for future use - instead of leaving no s=
pace at all and using up all the available bits in the message for SSID.<br=
></div><div><br></div><div>Recall that draft-gandhi-spring-twamp-srpm only =
uses one bit flag from the 16-bit field, rest is still available.<br></div>=
<div><br></div><div>Thanks,</div><div>Rakesh</div><div><br></div></div><br>=
<div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Fe=
b 28, 2020 at 3:12 PM Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.c=
om" target=3D"_blank">gregimirsky@gmail.com</a>&gt; wrote:<br></div><blockq=
uote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1p=
x solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">Hi Rakesh,<div>=
thank you for your expedient clarification. I think that one assumption mad=
e in your draft requires very careful consideration by IPPM WG that had wor=
ked on STAMP for quite some time already. Here&#39;s the paragraph that rai=
ses a question:</div><div>=C2=A0 =C2=A0The loss measurement probe and query=
 messages defined in this<br>=C2=A0 =C2=A0document are also equally applica=
ble to STAMP and STAMP TLVs, and use<br>=C2=A0 =C2=A0the message formats de=
fined in [I-D.ippm-stamp].<br></div><div>As I understand, you&#39;ve planne=
d to anchor this work at SPRING WG though you propose to update documents d=
eveloped in IPPM WG. Perhaps Chars of these two WGs will discuss and sugges=
t to you on the appropriate WG to host this draft.</div><div>As for the pro=
posed changes to STAMP, I believe that these should be handled with lots of=
 caution and we encourage authors to make the use of the STAMP extension me=
chanism provided by TLVs.</div><div><br></div><div>Regards,</div><div>Greg<=
/div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_a=
ttr">On Fri, Feb 28, 2020 at 10:10 AM Rakesh Gandhi &lt;<a href=3D"mailto:r=
gandhi.ietf@gmail.com" target=3D"_blank">rgandhi.ietf@gmail.com</a>&gt; wro=
te:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px =
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"=
ltr"><div>Hi Greg,</div><div>Thanks for your reply.</div><div>The draft-gan=
dhi-spring-twamp-srpm includes both TWAMP Light and STAMP (Section 3.2) (TL=
Vs for STAMP in other sections). Two drafts are updating the same field in =
the STAMP packet format. <br></div><div>Thanks,</div><div>Rakesh<br></div><=
div><br></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">On Thu, Feb 27, 2020 at 11:14 PM Greg Mirsky &lt;<a href=3D=
"mailto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com</a>&=
gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0=
px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div =
dir=3D"ltr">Hi Rakesh,<div>thank you for your interest in the update to STA=
MP extensions. Can you elaborate on where you see the conflict between STAM=
P and your proposal? Is the change you&#39;ve proposed applicable to STAMP =
test packet? As far as I understand, STAMP cannot support your proposal and=
 interwork with a system that is complaint with draft-gandhi-spring-twamp-s=
rpm. As for STAP interworking with TWAMP in Unauthenticated mode, SSID does=
n&#39;t change anything, as TWAMP Session-Sender will zero the field and Se=
ssion-Reflector will ignore it on receipt. So I don&#39;t see conflict here=
 at all. I greatly appreciate your clarification.</div><div><br></div><div>=
Regards,</div><div>Greg</div></div><br><div class=3D"gmail_quote"><div dir=
=3D"ltr" class=3D"gmail_attr">On Thu, Feb 27, 2020 at 7:48 PM Rakesh Gandhi=
 (rgandhi) &lt;<a href=3D"mailto:rgandhi@cisco.com" target=3D"_blank">rgand=
hi@cisco.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" styl=
e=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);paddin=
g-left:1ex">





<div lang=3D"EN-CA">
<div>
<p class=3D"MsoNormal">Hi Greg,<u></u><u></u></p>
<p class=3D"MsoNormal">I noticed that this STAMP TLV draft update is propos=
ing to modify the STAMP packet format to contain SSID.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></pre>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 Error Estimate=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 SSID=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0 |<u></u><u></u></pre>
<pre>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></pre>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">The SRPM draft posted in December had already propos=
ed to use the same field for control-code.<u></u><u></u></p>
<p class=3D"MsoNormal"><a href=3D"https://tools.ietf.org/html/draft-gandhi-=
spring-twamp-srpm-05" target=3D"_blank">https://tools.ietf.org/html/draft-g=
andhi-spring-twamp-srpm-05</a><u></u><u></u></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 .=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 Error Estimate=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | Reserv=
ed=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0 Control Code |<u></u><u></u></span=
></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">=C2=A0=C2=A0=C2=A0 .=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Looks like there is a conflict in packet format upda=
te proposed that need to sort out.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Thanks,<u></u><u></u></p>
<p class=3D"MsoNormal">Rakesh<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div style=3D"border-color:rgb(181,196,223) currentcolor currentcolor;borde=
r-style:solid none none;border-width:1pt medium medium;padding:3pt 0cm 0cm"=
>
<p class=3D"MsoNormal"><b><span style=3D"font-size:12pt;color:black">From: =
</span></b><span style=3D"font-size:12pt;color:black">ippm &lt;<a href=3D"m=
ailto:ippm-bounces@ietf.org" target=3D"_blank">ippm-bounces@ietf.org</a>&gt=
; on behalf of Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" tar=
get=3D"_blank">gregimirsky@gmail.com</a>&gt;<br>
<b>Date: </b>Friday, February 21, 2020 at 11:07 AM<br>
<b>To: </b>IETF IPPM WG &lt;<a href=3D"mailto:ippm@ietf.org" target=3D"_bla=
nk">ippm@ietf.org</a>&gt;<br>
<b>Subject: </b>[ippm] Fwd: New Version Notification for draft-ietf-ippm-st=
amp-option-tlv-03.txt<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Dear All, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal">the new version includes updates to the Followup Tel=
emetry TLV and introduces the new HMAC TLV.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">We always welcome and greatly appreciate your commen=
ts, questions, and suggestions.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt">Greg<u></u><u></u></p>
<div>
<div>
<p class=3D"MsoNormal">---------- Forwarded message ---------<br>
From: &lt;<a href=3D"mailto:internet-drafts@ietf.org" target=3D"_blank">int=
ernet-drafts@ietf.org</a>&gt;<br>
Date: Fri, Feb 21, 2020 at 8:04 AM<br>
Subject: New Version Notification for draft-ietf-ippm-stamp-option-tlv-03.t=
xt<br>
To: Henrik Nydell &lt;<a href=3D"mailto:hnydell@accedian..com" target=3D"_b=
lank">hnydell@accedian.com</a>&gt;, Min Xiao &lt;<a href=3D"mailto:xiao.min=
2@zte.com.cn" target=3D"_blank">xiao.min2@zte.com.cn</a>&gt;, Adi Masputra =
&lt;<a href=3D"mailto:adi@apple.com" target=3D"_blank">adi@apple.com</a>&gt=
;, Ernesto Ruffini &lt;<a href=3D"mailto:eruffini@outsys.org" target=3D"_bl=
ank">eruffini@outsys.org</a>&gt;,
 Gregory Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_bla=
nk">gregimirsky@gmail.com</a>&gt;, Richard Foote &lt;<a href=3D"mailto:foot=
er.foote@nokia.com" target=3D"_blank">footer.foote@nokia.com</a>&gt;<u></u>=
<u></u></p>
</div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt"><br>
<br>
<br>
A new version of I-D, draft-ietf-ippm-stamp-option-tlv-03.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-ippm-stamp-option-=
tlv<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A003<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Simple Two-way Active Measurement =
Protocol Optional Extensions<br>
Document date:=C2=A0 2020-02-21<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 ippm<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 25<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.txt" target=3D"_blan=
k">
https://www.ietf.org/internet-drafts/draft-ietf-ippm-stamp-option-tlv-03.tx=
t</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ietf-ippm-stamp-option-tlv/" target=3D"_blank">https://data=
tracker.ietf.org/doc/draft-ietf-ippm-stamp-option-tlv/</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ietf-ippm-stamp-option-tlv-03" target=3D"_blank">https://tools.ietf.o=
rg/html/draft-ietf-ippm-stamp-option-tlv-03</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ietf-ippm-stamp-option-tlv" target=3D"_blank">https://datat=
racker.ietf.org/doc/html/draft-ietf-ippm-stamp-option-tlv</a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ietf-ippm-stamp-option-tlv-03" target=3D"_blank">ht=
tps://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-ippm-stamp-option-tlv-03</a><b=
r>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document describes optional extensions to Simple Two-way =
Active<br>
=C2=A0 =C2=A0Measurement Protocol (STAMP) which enable measurement performa=
nce<br>
=C2=A0 =C2=A0metrics in addition to ones supported by the STAMP base<br>
=C2=A0 =C2=A0specification.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" target=3D"_blank">
tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>

</blockquote></div>
_______________________________________________<br>
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arget=3D"_blank">https://www.ietf.org/mailman/listinfo/ippm</a><br>
</blockquote></div>
</blockquote></div>
</blockquote></div>
</div>
</blockquote></div>

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From: "MORTON, ALFRED C (AL)" <acm@research.att.com>
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Thread-Topic: [ippm] I-D Action: draft-ietf-ippm-capacity-metric-method-00.txt
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Hi R=FCdiger,

Thanks for your ideas on additional sources of random loss
that we might encounter during Maximum IP-Layer Capacity testing.

We can add some of your considerations directly into the draft.
In general, the recommendation is to use test endpoints as close to the=20
measured link as possible (but this is not always possible).

*In the last 2 weeks*, discussions of our Hackathon testing (and follow-up
testing, to be shared at IETF-107) have occurred during the meetings
of two other SDOs seeking Harmonized metrics and methods with IETF:
ETSI Technical Committee STQ MOBILE and ITU-T Study Group 12 (Q17).
Selected points follow:

More on conditions encountered in testing:

Some transmission technologies have multiple methods of operation that=20
may be activated when channel conditions degrade or improve, and these=20
transmission methods may determine the Maximum IP-Layer Capacity.=20
Examples include line-of-sight microwave modulator constellations,=20
or cellular modem technologies where the changes may be initiated=20
by a user moving from one coverage area to another. Operation in the=20
different transmission methods may be observed over time, but the modes=20
of Maximum IP-Layer Capacity will not be activated deterministically=20
as with the "turbo mode" described as previously described in Section 6.6.

There is also new interest to apply the Maximum IP-Layer Capacity method
during cellular drive testing. This will surely produce forms of=20
measurement path variation not yet seen, but the problems seen so far
have all been grappled-with successfully. We will be developing
a test plan with interested parties.

Reporting Formats:

Finally, the authors have also discussed measurement reporting and=20
results interpretation at the ETSI and SG12 Q17 meetings. We have listed=20
items to provide context to Singleton Capacity measurements:

- timestamp (especially the time when the maximum was observed in dtn)
- source and destination (by IP or other meaningful ID)
- (inner) parameters of the test case (Section 4)
- outer parameters, such as "done in motion" or other factors belonging=20
  to the context of the measurement
- result (to take care of cases where the process was somehow interrupted=20
  or the attempt failed)
- a field where unusual circumstances could be documented, and another=20
  one for "ignore/mask out" purposes in further processing

Thoughts on these and other aspects of reporting formats are welcome.

Thanks for your consideration of these topics, we will update the=20
draft again shortly.

Al
(for the co-authors)


> -----Original Message-----
> From: Ruediger.Geib@telekom.de [mailto:Ruediger.Geib@telekom.de]
> Sent: Tuesday, February 4, 2020 3:31 AM
> To: MORTON, ALFRED C (AL) <acm@research.att.com>
> Cc: ippm@ietf.org
> Subject: AW: [ippm] I-D Action: draft-ietf-ippm-capacity-metric-method-
> 00.txt
>=20
> Hi Al,
>=20
> Conditions which might occur while measuring are
>=20
> - congestion of an interconnection or backbone interface. I don't expect =
that to
>   be prevalent, but it might happen. If the congested interface has a hig=
her
>   bandwidth then the measurement sender, then the measurement packets
>   won't arrive as a burst at the bottleneck. Further, Random Early Detect=
ion
>   may be deployed. In both cases
>   * packet loss is present, which is likely to occur independent of the s=
ender rate.
>   * If the queue or congestion respectively is persistent, a small delay =
variation is
>      present, which is independent of the sender rate too. It is bigger t=
han the
>      delay variation of a non congested interface.
>=20
> The drop pattern caused by a congested backbone or interconnection
> interface is likely not causing a drop pattern which easy to characterize=
.
> A measurement of the access bandwidth is deteriorating to an estimate, as
> single losses and queuing at an access may be hard to discern from the
> queue and drops caused by backbone or interconnection links. If the acces=
s
> bandwidth is rate controlled by a policer, this will even be harder, as i=
n
> that case no queue will build up at the access.
>=20
> - the presence of middleboxes might result in transport layer or applicat=
ion specific
>   rate limitations. A variety of conditions may arise, ranging from compl=
ete blocking
>   of a measurement flow to access bandwidth measurements being significan=
tly higher
>   than the rates achieved by flows of other protocols or applications, if=
 the latter are
>   rate controlled by a middlebox while the measurement flow isn't.
>=20
> It may also be a good idea to foresee ECN support by the measurement
> system. A commodity ECN deployment may not be available by now, but
> standardization efforts of ECN based network and transport behavior have
> grown in the last decade.
>=20
> This list isn't exhaustive and others are invited to append or discuss th=
e
> above scenarios. Hints on "how to detect" and "how to separate impact" of
> effects impairing capacity measurements are welcome (especially those eas=
y
> to implement :) .
>=20
> Regards,
>=20
> Ruediger
>=20
>=20
> -----Urspr=FCngliche Nachricht-----
> Von: ippm <ippm-bounces@ietf.org> Im Auftrag von MORTON, ALFRED C (AL)
> Gesendet: Donnerstag, 30. Januar 2020 16:14
> An: ippm@ietf.org
> Betreff: Re: [ippm] I-D Action: draft-ietf-ippm-capacity-metric-method-
> 00.txt
>=20
> Hi IPPM,
>=20
> Thanks to everyone who supported adoption of our draft.
> This version simply changes the filename.
>=20
> At the IETF-106 Hackathon, we encountered some new conditions in our
> testing with the prototype implementation:
> https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__github.com_IETF-
> 2DHackathon_ietf106-2Dproject-2Dpresentations_blob_master_106-2Dacm-
> 2DHackathon-2DMeasurements.pdf&d=3DDwIFAw&c=3DLFYZ-
> o9_HUMeMTSQicvjIg&r=3D_6cen3Hn-e_hOm0BhY7aIpA58dd19Z9qGQsr8-
> 6zYMI&m=3DLId4VFVBccULCDxpj9IhTYeQDcZSVtpUSc4r5kWT1nI&s=3DLwM10qGdCo3Dh9l=
jl7pS
> 0e2bEeZp056vnNWbSwziG74&e=3D
>=20
> Load Adjustment:
> Search Algorithm uses Loss and delay variation feedback
>=20
> Observed:
> Random loss throughout some tests, with insignificant delay variation
>=20
> Possible revisions to Search Algorithm, etc. under these conditions:
> 	Add a variable Loss threshold for conditions encountered
> 	Continue "large" rate increases when loss-only is encountered
> 	May need longer test durations under Loss-only Conditions
>=20
> We'd like to discuss these findings further with the WG, and run some mor=
e
> tests to answer questions and investigate further.
>=20
> regards,
> Al, for the co-authors
>=20

