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Subject: [mpls] Closed - Re: Poll to see if we have consensus to adopt draft-mirsky-mpls-residence-time as an MPLS wg document.
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Working Group,

This wg adoption poll is closed. We have a new mpls wg document.

Can the authors please post the document as
draft-ietf-mpls-residence-time
without any other changes than filename, version number and dates.

/Loa
for the wg chairs

On 2015-07-08 19:36, Loa Andersson wrote:
> Working Group,
>
> This is to start a two week poll on adopting draft-mirsky-
> mpls-residence-time as an MPLS working group document.
>
> Please send your comments (support/not support) to the mpls working
> group mailing list (mpls@ietf.org). Please give a technical
> motivation for your support/not support, especially if you think that
> the document should not be adopted as a working group document.
>
> There are no IPR disclosures against this document. However, we have
> started an IPR poll in parallel to the adoption poll.
>
> This poll ends July 24, 2015.
>
> /Loa
>


From nobody Mon Aug  3 03:52:26 2015
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To: John E Drake <jdrake@juniper.net>, Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
From: Stewart Bryant <stbryant@cisco.com>
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Subject: Re: [mpls] IPR poll on draft-mirsky-mpls-residence-time
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I don't think I responded.

I do not know of any relevant IPR.

Stewart

On 08/07/2015 20:47, John E Drake wrote:
> I'm not aware of any IPR related to this draft
>
> Yours Irrespectively,
>
> John
>
>> -----Original Message-----
>> From: Loa Andersson [mailto:loa@pi.nu]
>> Sent: Wednesday, July 08, 2015 1:37 PM
>> To: mpls@ietf.org
>> Cc: mpls-chairs@tools.ietf.org; draft-mirsky-mpls-residence-
>> time@tools.ietf.org
>> Subject: IPR poll on draft-mirsky-mpls-residence-time
>>
>> Working Group,
>>
>> A poll to see if we have consensus to adopt draft-mirsky- mpls-residence-
>> time as an MPLS wg document has been started. In parallel we will do an IPR
>> poll.
>>
>> This mail starts the IPR poll.
>>
>> Are you aware of any IPR that applies to draft-mirsky- mpls-residence-time?
>>
>> If so, has this IPR been disclosed in compliance with IETF IPR rules (see RFCs
>> 3979, 4879, 3669 and 5378 for more details).
>>
>> There are currently no IPR disclosures filed against this document.
>>
>> If you are listed as a document author or contributor please respond to this
>> email regardless of whether or not you are aware of any relevant IPR. *The
>> response needs to be sent to the MPLS wg mailing list.* The document will
>> not advance to the next stage until a response has been received from each
>> author and contributor.
>>
>> If you are on the MPLS WG email list but are not listed as an author or
>> contributor, then please explicitly respond only if you are aware of any IPR
>> that has not yet been disclosed in conformance with IETF rules.
>>
>>
>> /Loa
>> mpls wg co-chair
>> --
>>
>>
>> Loa Andersson                        email: loa@mail01.huawei.com
>> Senior MPLS Expert                          loa@pi.nu
>> Huawei Technologies (consultant)     phone: +46 739 81 21 64
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>


-- 
For corporate legal information go to:

http://www.cisco.com/web/about/doing_business/legal/cri/index.html


From nobody Mon Aug  3 04:25:39 2015
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Subject: Re: [mpls] IPR poll on draft-mirsky-mpls-residence-time
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Stewart,

You are right - my notes were wrong. Thanks for responding.

If I now can trust my notes, all the authors has responded and we are
in synch.

/Loa

On 2015-08-03 12:52, Stewart Bryant wrote:
> I don't think I responded.
>
> I do not know of any relevant IPR.
>
> Stewart
>
> On 08/07/2015 20:47, John E Drake wrote:
>> I'm not aware of any IPR related to this draft
>>
>> Yours Irrespectively,
>>
>> John
>>
>>> -----Original Message-----
>>> From: Loa Andersson [mailto:loa@pi.nu]
>>> Sent: Wednesday, July 08, 2015 1:37 PM
>>> To: mpls@ietf.org
>>> Cc: mpls-chairs@tools.ietf.org; draft-mirsky-mpls-residence-
>>> time@tools.ietf.org
>>> Subject: IPR poll on draft-mirsky-mpls-residence-time
>>>
>>> Working Group,
>>>
>>> A poll to see if we have consensus to adopt draft-mirsky-
>>> mpls-residence-
>>> time as an MPLS wg document has been started. In parallel we will do
>>> an IPR
>>> poll.
>>>
>>> This mail starts the IPR poll.
>>>
>>> Are you aware of any IPR that applies to draft-mirsky-
>>> mpls-residence-time?
>>>
>>> If so, has this IPR been disclosed in compliance with IETF IPR rules
>>> (see RFCs
>>> 3979, 4879, 3669 and 5378 for more details).
>>>
>>> There are currently no IPR disclosures filed against this document.
>>>
>>> If you are listed as a document author or contributor please respond
>>> to this
>>> email regardless of whether or not you are aware of any relevant IPR.
>>> *The
>>> response needs to be sent to the MPLS wg mailing list.* The document
>>> will
>>> not advance to the next stage until a response has been received from
>>> each
>>> author and contributor.
>>>
>>> If you are on the MPLS WG email list but are not listed as an author or
>>> contributor, then please explicitly respond only if you are aware of
>>> any IPR
>>> that has not yet been disclosed in conformance with IETF rules.
>>>
>>>
>>> /Loa
>>> mpls wg co-chair
>>> --
>>>
>>>
>>> Loa Andersson                        email: loa@mail01.huawei.com
>>> Senior MPLS Expert                          loa@pi.nu
>>> Huawei Technologies (consultant)     phone: +46 739 81 21 64
>> _______________________________________________
>> mpls mailing list
>> mpls@ietf.org
>> https://www.ietf.org/mailman/listinfo/mpls
>>
>
>


From nobody Mon Aug  3 08:44:42 2015
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Working Group,

This is to initiate a two week working group last call on draft-ietf-mpls-l=
sp-ping-mpls-tp-oam-conf-10.

Please send your comments to the mpls wg mailing list (mpls@ietf.org<mailto=
:mpls@ietf.org>).

There are no IPR disclosures against this document. All the authors have st=
ated that they
are not aware of any IPR that relates to this draft (two of the responses w=
ere private to
the WG chairs).

This working group last call ends Tuesday  August 18, 2015.

The previous WGLC for this document failed due to a lack of response, even =
though there were
no objections. I will remind the working group that for a WGLC a lack of re=
sponse does not imply
support; rather a lack of response implies either no opinion or a failure t=
o read the document. As
with any WGLC, working group participants are requested to read the documen=
t and comment,
and if you feel that the document is ready for publication it is appropriat=
e to respond to any WGLC
with a short and simple email indicating support.

Ross
for the MPLS WG chairs



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libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to initiate a two week working =
group last call on draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments to the mpls w=
g mailing list (<a href=3D"mailto:mpls@ietf.org"><span style=3D"color:windo=
wtext">mpls@ietf.org</span></a>).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
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<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">There are no IPR disclosures against th=
is document. All the authors have stated that they
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">are not aware of any IPR that relates t=
o this draft (two of the responses were private to
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">the WG chairs).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This working group last call ends Tuesd=
ay&nbsp; August 18, 2015.&nbsp;
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The previous WGLC for this document fai=
led due to a lack of response, even though there were
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">no objections. I will remind the workin=
g group that for a WGLC a lack of response does not imply
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">support; rather a lack of response impl=
ies either no opinion or a failure to read the document. As
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with any WGLC, working group participan=
ts are requested to read the document and comment,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">and if you feel that the document is re=
ady for publication it is appropriate to respond to any WGLC
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with a short and simple email indicatin=
g support.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">for the MPLS WG chairs<o:p></o:p></span=
></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
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From nobody Mon Aug  3 21:38:23 2015
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Subject: [mpls] I-D Action: draft-ietf-mpls-tp-linear-protection-mib-05.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 Multiprotocol Label Switching Working Group of the IETF.

        Title           : MPLS Transport Profile Linear Protection MIB
        Authors         : Venkatesan Mahalingam
                          Vishwas Manral
                          Daniel King
                          Sam Aldrin
	Filename        : draft-ietf-mpls-tp-linear-protection-mib-05.txt
	Pages           : 30
	Date            : 2015-08-03

Abstract:
   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols. In particular it defines
   objects for managing MPLS Transport Profile (MPLS-TP) Linear
   Protection.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-mpls-tp-linear-protection-mib/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-mpls-tp-linear-protection-mib-05

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-tp-linear-protection-mib-05


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.

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From nobody Tue Aug  4 05:15:04 2015
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From: "Andrew G. Malis" <agmalis@gmail.com>
Date: Tue, 4 Aug 2015 08:14:40 -0400
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To: Ross Callon <rcallon@juniper.net>
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Cc: "mpls@ietf.org" <mpls@ietf.org>, "mpls-chairs@tools.ietf.org" <mpls-chairs@tools.ietf.org>, "draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org" <draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org>
Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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--14dae9cc9c5a367736051c7b3cc8
Content-Type: text/plain; charset=UTF-8

Ross,

I've read the draft, and I agree with the authors that it is ready for
publication. It's been improved since the previous WG LC. My only comment
is that the reference to draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext should be
updated to RFC 7487, which is something the RFC Editor would do anyway.

Thanks,
Andy


On Mon, Aug 3, 2015 at 11:44 AM, Ross Callon <rcallon@juniper.net> wrote:

> Working Group,
>
>
>
> This is to initiate a two week working group last call on
> draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10.
>
>
>
> Please send your comments to the mpls wg mailing list (mpls@ietf.org).
>
>
>
> There are no IPR disclosures against this document. All the authors have
> stated that they
>
> are not aware of any IPR that relates to this draft (two of the responses
> were private to
>
> the WG chairs).
>
>
>
> This working group last call ends Tuesday  August 18, 2015.
>
>
>
> The previous WGLC for this document failed due to a lack of response, even
> though there were
>
> no objections. I will remind the working group that for a WGLC a lack of
> response does not imply
>
> support; rather a lack of response implies either no opinion or a failure
> to read the document. As
>
> with any WGLC, working group participants are requested to read the
> document and comment,
>
> and if you feel that the document is ready for publication it is
> appropriate to respond to any WGLC
>
> with a short and simple email indicating support.
>
>
>
> Ross
>
> for the MPLS WG chairs
>
>
>
>
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>
>

--14dae9cc9c5a367736051c7b3cc8
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Ross,<div><br></div><div>I&#39;ve read the draft, and I ag=
ree with the authors that it is ready for publication. It&#39;s been improv=
ed since the previous WG LC. My only comment is that the reference to=C2=A0=
draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext should be updated to RFC 7487, whi=
ch is something the RFC Editor would do anyway.</div><div><br></div><div>Th=
anks,</div><div>Andy</div><div><br></div></div><div class=3D"gmail_extra"><=
br><div class=3D"gmail_quote">On Mon, Aug 3, 2015 at 11:44 AM, Ross Callon =
<span dir=3D"ltr">&lt;<a href=3D"mailto:rcallon@juniper.net" target=3D"_bla=
nk">rcallon@juniper.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail=
_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:=
1ex">





<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Working Group,<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to initiate a two week working =
group last call on draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10.
<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments to the mpls w=
g mailing list (<a href=3D"mailto:mpls@ietf.org" target=3D"_blank"><span st=
yle=3D"color:windowtext">mpls@ietf.org</span></a>).<u></u><u></u></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">There are no IPR disclosures against th=
is document. All the authors have stated that they
<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">are not aware of any IPR that relates t=
o this draft (two of the responses were private to
<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">the WG chairs).<u></u><u></u></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This working group last call ends Tuesd=
ay=C2=A0 August 18, 2015.=C2=A0
<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The previous WGLC for this document fai=
led due to a lack of response, even though there were
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">no objections. I will remind the workin=
g group that for a WGLC a lack of response does not imply
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">support; rather a lack of response impl=
ies either no opinion or a failure to read the document. As
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with any WGLC, working group participan=
ts are requested to read the document and comment,
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">and if you feel that the document is re=
ady for publication it is appropriate to respond to any WGLC
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with a short and simple email indicatin=
g support.
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Ross<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">for the MPLS WG chairs<u></u><u></u></s=
pan></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">=C2=A0<u></u><u></u></span></p>
</div>
</div>
</div>

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

--14dae9cc9c5a367736051c7b3cc8--


From nobody Tue Aug  4 05:22:08 2015
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From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "'George Swallow \(swallow\)'" <swallow@cisco.com>, "'Alexander Vainshtein'" <Alexander.Vainshtein@ecitele.com>, <mpls@ietf.org>
References: <040c01d09c3f$2f060220$8d120660$@olddog.co.uk> <D1B17EC7.3B759%swallow@cisco.com>
In-Reply-To: <D1B17EC7.3B759%swallow@cisco.com>
Date: Tue, 4 Aug 2015 13:21:10 +0100
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Cc: 'Loa Andersson' <loa@mail01.huawei.com>
Subject: Re: [mpls] draft-vainshtein-mpls-gal-tc-ttl-handling-00.txt
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Hi George,

Closing the loop on this after several email exchanges.

> In the abstract this document claims to "clarify" RFC5586.  However it
> actually modifies the behavior in two ways.
>=20
> First in section 4.2.1.1, RFC5586 states:
>=20
>   The TTL field of the GAL LSE MUST be set to at least 1.
>=20
> This can equally be stated as "MUST NOT set the TTL to 0.  However =
this
> document changes that to "SHOULD NOT".  I see absolutely no reason for
> this change.
>
> Second, as per 5586 a receiver that discarded a received GAL with =
TTL=3D0
> was not out of compliance with that rfc.  Now you say that a receiver =
that
> a receiver "that examines an LSE that contains the GAL MUST ignore the
> value of the TTL field".

Compliance and conformance to RFCs has never been something that I have =
been
enthusiastic about. Especially not being out of compliance by not doing
something.

Our aim here is not to set more rules for measuring compliance, but to =
increase
the chance of interoperability in the future.

And let's understand that nothing we write can in any way change whether =
an
implementation is compliant to 5586 since that document is already =
published.

> So a piece of hardware, say an ASIC, was designed years ago to discard
> packets with a TTL of 0 in the top label is now out of compliance =
whereas
> in RFC5586 the fault in this situation would lie clearly with the =
sender.

The fault continues to lie with the sender. However, being able to point =
a
finger and say "the sender is broken" doesn't really help deployments. =
The aim
is for new implementations to be allowed to process correctly despite =
the faults
of the sender.

> Now suppose further that our ASIC is also programmed to put packets =
with a
> TTL of 1 in the top label on the slow path.  Here the ASIC is not =
ignoring
> the TTL value - it is making a decision based on it.  It is, however,
> still enabling a CP or RP to process the GAL.  This, of course, may =
not be
> optimal, but it should not be illegal.

Indeed. Let us hope that Warren's Internet Police do not descend on us!

> So how about we say that "the LER that originates the G-ACh packet =
SHOULD
>    NOT set this value to 1 and MUST NOT set this value to 0."

You're right about this and we have moved to "MUST NOT 0 and SHOULD NOT =
1"

> For the receiver, I think it suffices to say "SHOULD ignore the value =
of
> the TTL field".  But if you want to work a MUST into the language - =
its
> scope should not include the value 0 and the language should not be =
about
> "examining".
>=20
> Something like "MUST not discard =A9 based on a TTL value of 1 or =
more."

Yes.
"An LER that examines an LSE that contains the GAL SHOULD ignore the =
value of
the TTL field, and MUST NOT discard the packet based on the value of the =
TTL
field."

Cheers,
Adrian

PS Response to Rolf's addendum to this thread comes in a separate email.



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From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "'Rolf Winter'" <Rolf.Winter@neclab.eu>
References: <DB3PR03MB078042995520179F5E4449589D810@DB3PR03MB0780.eurprd03.prod.outlook.com>
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Cc: mpls@ietf.org, 'Loa Andersson' <loa@mail01.huawei.com>
Subject: Re: [mpls] draft-vainshtein-mpls-gal-tc-ttl-handling-00.txt
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Rolf, all,
=20
I want to see whether we can close this point down.
=20
As I understand Rolf's point, some packets may use a TTL of one =
(usually, but not always by hop-by-hop decrement) to cause the packet to =
be ejected from the forwarding path and to enable it to be processed as =
an OAM packet.
=20
I think the point here is that the top label is a normal forwarding =
label and, if the TTL did not expire, the packet would continue to be =
forwarded to the destination as usual. Therefore, in order to target an =
OAM packet at a transit LSR, the TTL is set to a lower number. In fact, =
knowing the path, one can target an specific LSR along the path, or (by =
steadily incrementing the value of TTL transmitted) one can trace a =
path.
=20
In this case, however, it is not the TTL of the LSE containing the GAL =
that is found to have the value one. Rather it is the TTL of the top LSE =
(that which contains a normal forwarding label).
=20
So we are left with the question: could the GAL ever be in the top LSE =
for an incoming packet?
=20
The only possibilities I can think of are:
- when the previous hope did pop-and-go without examining the underlying =
LSE
- when the packet is being deliberately sent on an MPLS Section (i.e. a =
single hop)
=20
RFC 5586 doesn't have anything (that I can find) to say about these =
cases.
=20
In the first case, I am pretty sure that the OAM packet was intended to =
be processed by the LSR that popped the previous label. However, this =
doesn't mean that the packet might not "escape" from an LSR that is =
configured for pop-and-go (such as in a PHP) case. It would, IMHO, =
represent a broken implementation, but I can believe that =
implementations pre-dating 5586 might do this.
=20
In the second case, I can see why this might be done, but I worry that =
the OAM is being applied to an MPLS-capable link and not to a segment of =
a specific LSP, there being no way to associate the received OAM packet =
with an LSP without a preceding label.
=20
Furthermore, I don't see how a receiver can disambiguate these two cases =
without looking deeper into the contents of the packet, and I'm not sure =
that there is guaranteed to be sufficient information in all packets to =
allow the receiver to know the difference between:
- this packet "escaped" its intended recipient
and
- this is an "unlabelled" packet meant for me
=20
So I wonder...
=20
Does the WG want to make some statement about an LSE containing the GAL =
never being valid at the top of the stack? Or have I missed something =
defined elsewhere?
=20
Thanks,
Adrian
=20
=20
=20
=20
From: Alexander Vainshtein [mailto:Alexander.Vainshtein@ecitele.com]=20
Sent: 24 July 2015 17:25
To: Rolf Winter
Cc: 'Loa Andersson'; George Swallow (swallow); adrian@olddog.co.uk; =
mpls@ietf.org
Subject: Re: draft-vainshtein-mpls-gal-tc-ttl-handling-00.txt
=20
Rolf,
I must admit that I have gailed to understand just HOW TTL in the =
GAL-containing LSE is used for addressing. I am not aware of any RFCs =
dedcribing this.
Could it posdibly be that you have referred to TTL in the LSE containing =
a normal label being set to 1 for the Next Hop LSR to trap the OAM =
packet as part of *segment* (not "*section*) OAM? If so this completely =
unrelated to the TTL value that us set by the transmitter in the =
GAL-containing LSE.
=20
As for fixing just the receivers by ignoring received TTL value in the =
GAL-containing LSE - the draft does that, but it also RECOMMENDS not =
sending TTL in this LSE to 1 in order to avoid problems with recrivers =
that comply to 5586 but not to this document.
=20
Hope this helps.
=20
Thumb typed on my LG,
Sasha

------ Original message ------
From: Rolf Winter
Date: 24/07/2015 12:23
To: Alexander Vainshtein;
Cc: 'Loa Andersson';George Swallow =
(swallow);adrian@olddog.co.uk;mpls@ietf.org;
Subject:RE: draft-vainshtein-mpls-gal-tc-ttl-handling-00.txt
See inline [things we agree on snipped]

NEC Europe Ltd | Registered Office: Athene, Odyssey Business Park, West =
End  Road, London, HA4 6QE, GB | Registered in England 2832014

> b) when the GAL is used for section OAM, then setting the TTL to 1 is
> necessary as it is used for addressing.
>=20
> This is a noteworthy exception to the rule outlined in the document.
>=20
> [[Sasha]] I may be missing something but I do not really understand =
why
> such an exception is required.
>=20
> I assume that by "Section OAM" you refer to the case when the top LSE
> in the label stack contains GAL.
>=20
> If this is correct, then this LSE  (being the top one) would be
> examined by the LSR at the other end of the data link, and the packet
> immediately identified as an OAM packet based on the fact that the
> examined LSE contains GAL. Further disposition of this packet would be
> then decided by the packet type as encoded in the GACH and, if
> necessary, buy packet type-specific means. This would happen =
regardless
> of the TTL value in this LSE. Setting it to 1 should not really change
> anything IMHO.

Well, the TTL is being used here for addressing and you want to change =
these semantics. Architecturally, this doesn't seem right. If "just look =
at the label" is a valid fix to the problem, why not fixing the =
receivers that have the problem. Why changing all the senders?

>=20
>=20
>=20
> Generally, the proposal begs the question "why having all senders
> change when the problem seems to be in some receivers".
>=20
>=20
>=20
> Best,
>=20
>=20
>=20
> Rolf
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
> NEC Europe Ltd | Registered Office: Athene, Odyssey Business Park, =
West
> End  Road, London, HA4 6QE, GB | Registered in England 2832014
>=20
>=20
>=20
> > -----Original Message-----
>=20
> > From: mpls [mailto:mpls-bounces@ietf.org <mailto:mpls-
> bounces@ietf.org> ] On Behalf Of George Swallow
>=20
> > (swallow)
>=20
> > Sent: Donnerstag, 25. Juni 2015 17:51
>=20
> > To: adrian@olddog.co.uk <mailto:adrian@olddog.co.uk> ; Alexander
> Vainshtein; mpls@ietf.org <mailto:mpls@ietf.org>
>=20
> > Cc: 'Loa Andersson'
>=20
> > Subject: [mpls] draft-vainshtein-mpls-gal-tc-ttl-handling-00.txt
>=20
> >
>=20
> > Sasha, Adrian -
>=20
> >
>=20
> > In the abstract this document claims to "clarify" RFC5586.  However
> it
>=20
> > actually modifies the behavior in two ways.
>=20
> >
>=20
> > First in section 4.2.1.1, RFC5586 states:
>=20
> >
>=20
> >   The TTL field of the GAL LSE MUST be set to at least 1.
>=20
> >
>=20
> > This can equally be stated as "MUST NOT set the TTL to 0.  However
>=20
> > this document changes that to "SHOULD NOT".  I see absolutely no
>=20
> > reason for this change.
>=20
> >
>=20
> > Second, as per 5586 a receiver that discarded a received GAL with
>=20
> > TTL=3D0 was not out of compliance with that rfc.  Now you say that a
>=20
> > receiver that a receiver "that examines an LSE that contains the GAL
>=20
> > MUST ignore the value of the TTL field".
>=20
> >
>=20
> > So a piece of hardware, say an ASIC, was designed years ago to
> discard
>=20
> > packets with a TTL of 0 in the top label is now out of compliance
>=20
> > whereas in RFC5586 the fault in this situation would lie clearly =
with
>=20
> > the sender.
>=20
> >
>=20
> > Now suppose further that our ASIC is also programmed to put packets
>=20
> > with a TTL of 1 in the top label on the slow path.  Here the ASIC is
>=20
> > not ignoring the TTL value - it is making a decision based on it.  =
It
>=20
> > is, however, still enabling a CP or RP to process the GAL.  This, of
>=20
> > course, may not be optimal, but it should not be illegal.
>=20
> >
>=20
> > So how about we say that "the LER that originates the G-ACh packet
>=20
> > SHOULD
>=20
> >    NOT set this value to 1 and MUST NOT set this value to 0."
>=20
> >
>=20
> > For the receiver, I think it suffices to say "SHOULD ignore the =
value
>=20
> > of the TTL field".  But if you want to work a MUST into the language
> -
>=20
> > its scope should not include the value 0 and the language should not
>=20
> > be about "examining".
>=20
> >
>=20
> > Something like "MUST not discard =C5=A0 based on a TTL value of 1 or
> more."
>=20
> >
>=20
> > George
>=20
> >
>=20
> >
>=20
> >
>=20
> >
>=20
> >
>=20
> > _______________________________________________
>=20
> > mpls mailing list
>=20
> > mpls@ietf.org <mailto:mpls@ietf.org>
>=20
> > https://www.ietf.org/mailman/listinfo/mpls
> <https://www.ietf.org/mailman/listinfo/mpls>

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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-GB link=3Dblue =
vlink=3Dpurple style=3D'tab-interval:36.0pt'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Rolf, =
all,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>I want to see whether we can =
close this point down.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>As I understand Rolf's point, =
some packets may use a TTL of one (usually, but not always by hop-by-hop =
decrement) to cause the packet to be ejected from the forwarding path =
and to enable it to be processed as an OAM =
packet.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>I think the point here is that =
the top label is a normal forwarding label and, if the TTL did not =
expire, the packet would continue to be forwarded to the destination as =
usual. Therefore, in order to target an OAM packet at a transit LSR, the =
TTL is set to a lower number. In fact, knowing the path, one can target =
an specific LSR along the path, or (by steadily incrementing the value =
of TTL transmitted) one can trace a path.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>In this case, however, it is =
not the TTL of the LSE containing the GAL that is found to have the =
value one. Rather it is the TTL of the top LSE (that which contains a =
normal forwarding label).<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>So we are left with the =
question: could the GAL ever be in the top LSE for an incoming =
packet?<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>The only possibilities I can =
think of are:<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- when the previous hope did =
pop-and-go without examining the underlying LSE<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- when the packet is being =
deliberately sent on an MPLS Section (i.e. a single =
hop)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>RFC 5586 doesn't have anything =
(that I can find) to say about these cases.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>In the first case, I am pretty =
sure that the OAM packet was intended to be processed by the LSR that =
popped the previous label. However, this doesn't mean that the packet =
might not &quot;escape&quot; from an LSR that is configured for =
pop-and-go (such as in a PHP) case. It would, IMHO, represent a broken =
implementation, but I can believe that implementations pre-dating 5586 =
might do this.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>In the second case, I can see =
why this might be done, but I worry that the OAM is being applied to an =
MPLS-capable link and not to a segment of a specific LSP, there being no =
way to associate the received OAM packet with an LSP without a preceding =
label.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Furthermore, I don't see how a =
receiver can disambiguate these two cases without looking deeper into =
the contents of the packet, and I'm not sure that there is guaranteed to =
be sufficient information in all packets to allow the receiver to know =
the difference between:<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- this packet =
&quot;escaped&quot; its intended recipient<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>and<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- this is an =
&quot;unlabelled&quot; packet meant for me<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>So I =
wonder...<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Does the WG want to make some =
statement about an LSE containing the GAL never being valid at the top =
of the stack? Or have I missed something defined =
elsewhere?<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New =
Roman";color:#1F497D'>Thanks,<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Adrian<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><div =
style=3D'border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt'><div><div style=3D'border:none;border-top:solid #B5C4DF =
1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-f=
ont-family:"Times New =
Roman";mso-ansi-language:EN-US'>From:</span></b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-f=
ont-family:"Times New Roman";mso-ansi-language:EN-US'> Alexander =
Vainshtein [mailto:Alexander.Vainshtein@ecitele.com] <br><b>Sent:</b> 24 =
July 2015 17:25<br><b>To:</b> Rolf Winter<br><b>Cc:</b> 'Loa Andersson'; =
George Swallow (swallow); adrian@olddog.co.uk; =
mpls@ietf.org<br><b>Subject:</b> Re: =
draft-vainshtein-mpls-gal-tc-ttl-handling-00.txt<o:p></o:p></span></p></d=
iv></div><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
style=3D'margin:0cm;margin-bottom:.0001pt'><span =
style=3D'font-size:10.0pt'>Rolf,<o:p></o:p></span></p><p =
style=3D'margin:0cm;margin-bottom:.0001pt'><span =
style=3D'font-size:10.0pt'>I must admit that I have gailed to understand =
just HOW TTL in the GAL-containing LSE is used for addressing. I am not =
aware of any RFCs dedcribing this.<o:p></o:p></span></p><p =
style=3D'margin:0cm;margin-bottom:.0001pt'><span =
style=3D'font-size:10.0pt'>Could it posdibly be that you have referred =
to TTL in the LSE containing a normal label being set to 1 for the Next =
Hop LSR to trap the OAM packet as part of *segment* (not =
&quot;*section*) OAM? If so this completely unrelated to the TTL value =
that us set by the transmitter in the GAL-containing =
LSE.<o:p></o:p></span></p><p =
style=3D'margin:0cm;margin-bottom:.0001pt'><span =
style=3D'font-size:10.0pt'>&nbsp;<o:p></o:p></span></p><p =
style=3D'margin:0cm;margin-bottom:.0001pt'><span =
style=3D'font-size:10.0pt'>As for fixing just the receivers by ignoring =
received TTL value in the GAL-containing LSE - the draft does that, but =
it also RECOMMENDS not sending TTL in this LSE to 1 in order to avoid =
problems with recrivers that comply to 5586 but not to this =
document.<o:p></o:p></span></p><p =
style=3D'margin:0cm;margin-bottom:.0001pt'><span =
style=3D'font-size:10.0pt'>&nbsp;<o:p></o:p></span></p><p =
style=3D'margin:0cm;margin-bottom:.0001pt'><span =
style=3D'font-size:10.0pt'>Hope this helps.<o:p></o:p></span></p><p =
style=3D'margin:0cm;margin-bottom:.0001pt'><span =
style=3D'font-size:10.0pt'>&nbsp;<o:p></o:p></span></p><p =
class=3DMsoNormal style=3D'margin-bottom:12.0pt'><span =
style=3D'font-size:10.0pt;mso-fareast-font-family:"Times New =
Roman"'>Thumb typed on my LG,<br>Sasha<br><br>------ Original message =
------<br><b>From:&nbsp;</b>Rolf Winter<br><b>Date:&nbsp;</b>24/07/2015 =
12:23<br><b>To:&nbsp;</b>Alexander Vainshtein;<br><b>Cc:&nbsp;</b>'Loa =
Andersson';George Swallow =
(swallow);adrian@olddog.co.uk;mpls@ietf.org;<br><b>Subject:</b>RE: =
draft-vainshtein-mpls-gal-tc-ttl-handling-00.txt<o:p></o:p></span></p><di=
v><p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><span =
style=3D'font-size:10.0pt;mso-fareast-font-family:"Times New Roman"'>See =
inline [things we agree on snipped]<br><br>NEC Europe Ltd | Registered =
Office: Athene, Odyssey Business Park, West End &nbsp;Road, London, HA4 =
6QE, GB | Registered in England 2832014<br><br>&gt; b) when the GAL is =
used for section OAM, then setting the TTL to 1 is<br>&gt; necessary as =
it is used for addressing.<br>&gt; <br>&gt; This is a noteworthy =
exception to the rule outlined in the document.<br>&gt; <br>&gt; =
[[Sasha]] I may be missing something but I do not really understand =
why<br>&gt; such an exception is required.<br>&gt; <br>&gt; I assume =
that by &quot;Section OAM&quot; you refer to the case when the top =
LSE<br>&gt; in the label stack contains GAL.<br>&gt; <br>&gt; If this is =
correct, then this LSE &nbsp;(being the top one) would be<br>&gt; =
examined by the LSR at the other end of the data link, and the =
packet<br>&gt; immediately identified as an OAM packet based on the fact =
that the<br>&gt; examined LSE contains GAL. Further disposition of this =
packet would be<br>&gt; then decided by the packet type as encoded in =
the GACH and, if<br>&gt; necessary, buy packet type-specific means. This =
would happen regardless<br>&gt; of the TTL value in this LSE. Setting it =
to 1 should not really change<br>&gt; anything IMHO.<br><br>Well, the =
TTL is being used here for addressing and you want to change these =
semantics. Architecturally, this doesn't seem right. If &quot;just look =
at the label&quot; is a valid fix to the problem, why not fixing the =
receivers that have the problem. Why changing all the =
senders?<br><br>&gt; <br>&gt; <br>&gt; <br>&gt; Generally, the proposal =
begs the question &quot;why having all senders<br>&gt; change when the =
problem seems to be in some receivers&quot;.<br>&gt; <br>&gt; <br>&gt; =
<br>&gt; Best,<br>&gt; <br>&gt; <br>&gt; <br>&gt; Rolf<br>&gt; <br>&gt; =
<br>&gt; <br>&gt; <br>&gt; <br>&gt; <br>&gt; <br>&gt; <br>&gt; <br>&gt; =
<br>&gt; <br>&gt; NEC Europe Ltd | Registered Office: Athene, Odyssey =
Business Park, West<br>&gt; End &nbsp;Road, London, HA4 6QE, GB | =
Registered in England 2832014<br>&gt; <br>&gt; <br>&gt; <br>&gt; &gt; =
-----Original Message-----<br>&gt; <br>&gt; &gt; From: mpls =
[mailto:mpls-bounces@ietf.org &lt;mailto:mpls-<br>&gt; =
bounces@ietf.org&gt; ] On Behalf Of George Swallow<br>&gt; <br>&gt; &gt; =
(swallow)<br>&gt; <br>&gt; &gt; Sent: Donnerstag, 25. Juni 2015 =
17:51<br>&gt; <br>&gt; &gt; To: adrian@olddog.co.uk &lt;<a =
href=3D"mailto:adrian@olddog.co.uk">mailto:adrian@olddog.co.uk</a>&gt; ; =
Alexander<br>&gt; Vainshtein; mpls@ietf.org &lt;<a =
href=3D"mailto:mpls@ietf.org">mailto:mpls@ietf.org</a>&gt;<br>&gt; =
<br>&gt; &gt; Cc: 'Loa Andersson'<br>&gt; <br>&gt; &gt; Subject: [mpls] =
draft-vainshtein-mpls-gal-tc-ttl-handling-00.txt<br>&gt; <br>&gt; =
&gt;<br>&gt; <br>&gt; &gt; Sasha, Adrian -<br>&gt; <br>&gt; &gt;<br>&gt; =
<br>&gt; &gt; In the abstract this document claims to =
&quot;clarify&quot; RFC5586. &nbsp;However<br>&gt; it<br>&gt; <br>&gt; =
&gt; actually modifies the behavior in two ways.<br>&gt; <br>&gt; =
&gt;<br>&gt; <br>&gt; &gt; First in section 4.2.1.1, RFC5586 =
states:<br>&gt; <br>&gt; &gt;<br>&gt; <br>&gt; &gt; &nbsp;&nbsp;The TTL =
field of the GAL LSE MUST be set to at least 1.<br>&gt; <br>&gt; =
&gt;<br>&gt; <br>&gt; &gt; This can equally be stated as &quot;MUST NOT =
set the TTL to 0. &nbsp;However<br>&gt; <br>&gt; &gt; this document =
changes that to &quot;SHOULD NOT&quot;. &nbsp;I see absolutely =
no<br>&gt; <br>&gt; &gt; reason for this change.<br>&gt; <br>&gt; =
&gt;<br>&gt; <br>&gt; &gt; Second, as per 5586 a receiver that discarded =
a received GAL with<br>&gt; <br>&gt; &gt; TTL=3D0 was not out of =
compliance with that rfc. &nbsp;Now you say that a<br>&gt; <br>&gt; &gt; =
receiver that a receiver &quot;that examines an LSE that contains the =
GAL<br>&gt; <br>&gt; &gt; MUST ignore the value of the TTL =
field&quot;.<br>&gt; <br>&gt; &gt;<br>&gt; <br>&gt; &gt; So a piece of =
hardware, say an ASIC, was designed years ago to<br>&gt; discard<br>&gt; =
<br>&gt; &gt; packets with a TTL of 0 in the top label is now out of =
compliance<br>&gt; <br>&gt; &gt; whereas in RFC5586 the fault in this =
situation would lie clearly with<br>&gt; <br>&gt; &gt; the =
sender.<br>&gt; <br>&gt; &gt;<br>&gt; <br>&gt; &gt; Now suppose further =
that our ASIC is also programmed to put packets<br>&gt; <br>&gt; &gt; =
with a TTL of 1 in the top label on the slow path. &nbsp;Here the ASIC =
is<br>&gt; <br>&gt; &gt; not ignoring the TTL value - it is making a =
decision based on it. &nbsp;It<br>&gt; <br>&gt; &gt; is, however, still =
enabling a CP or RP to process the GAL. &nbsp;This, of<br>&gt; <br>&gt; =
&gt; course, may not be optimal, but it should not be illegal.<br>&gt; =
<br>&gt; &gt;<br>&gt; <br>&gt; &gt; So how about we say that &quot;the =
LER that originates the G-ACh packet<br>&gt; <br>&gt; &gt; =
SHOULD<br>&gt; <br>&gt; &gt; &nbsp;&nbsp;&nbsp;NOT set this value to 1 =
and MUST NOT set this value to 0.&quot;<br>&gt; <br>&gt; &gt;<br>&gt; =
<br>&gt; &gt; For the receiver, I think it suffices to say &quot;SHOULD =
ignore the value<br>&gt; <br>&gt; &gt; of the TTL field&quot;. &nbsp;But =
if you want to work a MUST into the language<br>&gt; -<br>&gt; <br>&gt; =
&gt; its scope should not include the value 0 and the language should =
not<br>&gt; <br>&gt; &gt; be about &quot;examining&quot;.<br>&gt; =
<br>&gt; &gt;<br>&gt; <br>&gt; &gt; Something like &quot;MUST not =
discard =C5=A0 based on a TTL value of 1 or<br>&gt; more.&quot;<br>&gt; =
<br>&gt; &gt;<br>&gt; <br>&gt; &gt; George<br>&gt; <br>&gt; &gt;<br>&gt; =
<br>&gt; &gt;<br>&gt; <br>&gt; &gt;<br>&gt; <br>&gt; &gt;<br>&gt; =
<br>&gt; &gt;<br>&gt; <br>&gt; &gt; =
_______________________________________________<br>&gt; <br>&gt; &gt; =
mpls mailing list<br>&gt; <br>&gt; &gt; mpls@ietf.org &lt;<a =
href=3D"mailto:mpls@ietf.org">mailto:mpls@ietf.org</a>&gt;<br>&gt; =
<br>&gt; &gt;&nbsp;<a =
href=3D"https://www.ietf.org/mailman/listinfo/mpls" =
target=3D"_BLANK">https://www.ietf.org/mailman/listinfo/mpls</a><br>&gt; =
&lt;<a href=3D"https://www.ietf.org/mailman/listinfo/mpls" =
target=3D"_BLANK">https://www.ietf.org/mailman/listinfo/mpls</a>&gt;<o:p>=
</o:p></span></p></div></div></div></body></html>
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From: Jeff Tantsura <jeff.tantsura@ericsson.com>
To: "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Subject: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Yes/support


From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: Monday, August 03, 2015 8:45 AM
To: mpls@ietf.org<mailto:mpls@ietf.org>
Cc: mpls-chairs@tools.ietf.org<mailto:mpls-chairs@tools.ietf.org>; draft-ie=
tf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org<mailto:draft-ietf-mpls-lsp=
-ping-mpls-tp-oam-conf@tools.ietf.org>
Subject: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-t=
p-oam-conf-10

Working Group,

This is to initiate a two week working group last call on draft-ietf-mpls-l=
sp-ping-mpls-tp-oam-conf-10.

Please send your comments to the mpls wg mailing list (mpls@ietf.org<mailto=
:mpls@ietf.org>).

There are no IPR disclosures against this document. All the authors have st=
ated that they
are not aware of any IPR that relates to this draft (two of the responses w=
ere private to
the WG chairs).

This working group last call ends Tuesday  August 18, 2015.

The previous WGLC for this document failed due to a lack of response, even =
though there were
no objections. I will remind the working group that for a WGLC a lack of re=
sponse does not imply
support; rather a lack of response implies either no opinion or a failure t=
o read the document. As
with any WGLC, working group participants are requested to read the documen=
t and comment,
and if you feel that the document is ready for publication it is appropriat=
e to respond to any WGLC
with a short and simple email indicating support.

Ross
for the MPLS WG chairs



--_000_D1E62B14A124Djefftantsuraericssoncom_
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e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>Yes/support</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micro=
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<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif; color: rgb(31, 73, 125);"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size: 10pt; font-family: Taho=
ma, sans-serif;">From:</span></b><span style=3D"font-size: 10pt; font-famil=
y: Tahoma, sans-serif;"> mpls [<a href=3D"mailto:mpls-bounces@ietf.org">mai=
lto:mpls-bounces@ietf.org</a>]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> Monday, August 03, 2015 8:45 AM<br>
<b>To:</b> <a href=3D"mailto:mpls@ietf.org">mpls@ietf.org</a><br>
<b>Cc:</b> <a href=3D"mailto:mpls-chairs@tools.ietf.org">mpls-chairs@tools.=
ietf.org</a>;
<a href=3D"mailto:draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org"=
>draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org</a><br>
<b>Subject:</b> [mpls] working group last call for draft-ietf-mpls-lsp-ping=
-mpls-tp-oam-conf-10<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">Working Group,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">This is to initiate a two week working group last call on dr=
aft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">Please send your comments to the mpls wg mailing list (<a hr=
ef=3D"mailto:mpls@ietf.org"><span style=3D"color:windowtext">mpls@ietf.org<=
/span></a>).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">There are no IPR disclosures against this document. All the =
authors have stated that they
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">are not aware of any IPR that relates to this draft (two of =
the responses were private to
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">the WG chairs).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">This working group last call ends Tuesday&nbsp; August 18, 2=
015.&nbsp;
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">The previous WGLC for this document failed due to a lack of =
response, even though there were
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">no objections. I will remind the working group that for a WG=
LC a lack of response does not imply
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">support; rather a lack of response implies either no opinion=
 or a failure to read the document. As
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">with any WGLC, working group participants are requested to r=
ead the document and comment,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">and if you feel that the document is ready for publication i=
t is appropriate to respond to any WGLC
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">with a short and simple email indicating support.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">for the MPLS WG chairs<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">&nbsp;<o:p></o:p></span></p>
</div>
</div>
</div>
</div>
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From: Ross Callon <rcallon@juniper.net>
To: Gregory Mirsky <gregory.mirsky@ericsson.com>
Thread-Topic: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03
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Date: Tue, 4 Aug 2015 16:13:11 +0000
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Cc: "mpls@ietf.org" <mpls@ietf.org>, "draft-mirsky-mpls-bfd-directed@tools.ietf.org" <draft-mirsky-mpls-bfd-directed@tools.ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>
Subject: Re: [mpls] MPLS-RT review of draft-mirsky-mpls-bfd-directed-03
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Greg;

Do you feel that you are ready to post the update?

I believe that the next steps here are for you to post the update (whenever=
 the authors feel that you are ready), for me to check with the MPLS-RT rev=
iewers to make sure that they are fine with the update, to do an IPR poll, =
and then to call for WG adoption.

Thanks, Ross

From: Gregory Mirsky [mailto:gregory.mirsky@ericsson.com]
Sent: Friday, July 24, 2015 3:51 AM
To: Thomas.Beckhaus@telekom.de; mpls@ietf.org; draft-mirsky-mpls-bfd-direct=
ed@tools.ietf.org
Cc: Ross Callon; mpls-chairs@ietf.org; Jeff Tantsura; mach.chen@huawei.com;=
 Ilya@nobulus.com
Subject: RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03

Hi Thomas,
would greatly appreciate if you kindly review proposed changes to address y=
our comments. I've attached diff and MS copy of what may be next version.

                Regards,
                                Greg


From: Thomas.Beckhaus@telekom.de<mailto:Thomas.Beckhaus@telekom.de> [mailto=
:Thomas.Beckhaus@telekom.de]
Sent: Tuesday, July 14, 2015 4:03 PM
To: mpls@ietf.org<mailto:mpls@ietf.org>; draft-mirsky-mpls-bfd-directed@too=
ls.ietf.org<mailto:draft-mirsky-mpls-bfd-directed@tools.ietf.org>
Cc: rcallon@juniper.net<mailto:rcallon@juniper.net>; mpls-chairs@ietf.org<m=
ailto:mpls-chairs@ietf.org>; Gregory Mirsky; Jeff Tantsura; mach.chen@huawe=
i.com<mailto:mach.chen@huawei.com>; Ilya@nobulus.com<mailto:Ilya@nobulus.co=
m>
Subject: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03

Hello,

I have been selected as reviewer of http://tools.ietf.org/html/draft-mirsky=
-mpls-bfd-directed-03.

I think the draft is coherent, technically sound and operational useful. It=
 extents the explicit path capability for the backward direction of _bidire=
ctional_ forwarding detection (BFD). The document is ready for WG adoption.

Some comments:

Section 1.1.1, Terminology:
I am not sure, whether the term _MPLS_ is really required in this section.

Section 3.1, "Case of MPLS Data Plane": Structure of sub-TLV specification.
The whole section describes, that three sub-TLV are specified for usage: "S=
tatic", "RSVP-TE" and "Segment Routing". For "Static" and "RSVP-TE", the dr=
aft refers to the according RFC (that's fine). But the structure of this se=
ction contains only a subsection for "Segment routing" and the reference to=
 the other sub-TLV is part of this subsection. I propose to add two additio=
nal subsections "Static" (3.1.x) and "RSVP-TE" (3.1.x) with the references =
and remove it from the subsection "Segment Routing" to be more coherent.

Section 3.1.2: "Segment Routing Tunnel Sub-TLV >
The section specifies the encoding of the SR tunnel Sub-TLV with the encodi=
ng of the label stack elements. I think it makes sense to describe the usag=
e of this information in the draft ("copy this information to the label sta=
ck"). Is the remote PE (initiator) allowed to add additional segments bases=
 on his local information or is the encoded label stack strict?

Section 3.3:
This section confused me. Maybe it should be considered to be rewritten (or=
 explained specifically to me).
Who is the _initiator_ in this case for the BFD reverse path scenario?

Section 3.4: "Return Codes"
The paragraph repeats the description text of the return code 2 times.  The=
 section specifies, that the egress LSR _MAY_ send back the return code. In=
 section 3.1.1, last paragraph, the behavior is specified, that the egress =
LSR may set up the BFD session or not, but in both cases, it sends back the=
 return code (are the MAYs are concatenated in the case, when the BFD sessi=
on is set up - see also comment from Nobo?). This implies, that the egress =
LSR _MUST_ send the return code, when the reverse path is not known.

Section 4 "Use case scenario":
The "value N" and "value M" are confusing, because it uses the same vocabul=
ary as the nodes in the network example (capital letter). It could be calle=
d "foobar" if it is not for interest.

Regards.

Thomas


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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Greg;<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Do you feel that you are =
ready to post the update?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">I believe that the next s=
teps here are for you to post the update (whenever the authors feel that yo=
u are ready), for me to check with the MPLS-RT reviewers
 to make sure that they are fine with the update, to do an IPR poll, and th=
en to call for WG adoption.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Thanks, Ross<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> Gregory =
Mirsky [mailto:gregory.mirsky@ericsson.com]
<br>
<b>Sent:</b> Friday, July 24, 2015 3:51 AM<br>
<b>To:</b> Thomas.Beckhaus@telekom.de; mpls@ietf.org; draft-mirsky-mpls-bfd=
-directed@tools.ietf.org<br>
<b>Cc:</b> Ross Callon; mpls-chairs@ietf.org; Jeff Tantsura; mach.chen@huaw=
ei.com; Ilya@nobulus.com<br>
<b>Subject:</b> RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03<o:p=
></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi Thomas,<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">would greatly appreciate =
if you kindly review proposed changes to address your comments. I&#8217;ve =
attached diff and MS copy of what may be next version.<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; Greg<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">
<a href=3D"mailto:Thomas.Beckhaus@telekom.de">Thomas.Beckhaus@telekom.de</a=
> [<a href=3D"mailto:Thomas.Beckhaus@telekom.de">mailto:Thomas.Beckhaus@tel=
ekom.de</a>]
<br>
<b>Sent:</b> Tuesday, July 14, 2015 4:03 PM<br>
<b>To:</b> <a href=3D"mailto:mpls@ietf.org">mpls@ietf.org</a>; <a href=3D"m=
ailto:draft-mirsky-mpls-bfd-directed@tools.ietf.org">
draft-mirsky-mpls-bfd-directed@tools.ietf.org</a><br>
<b>Cc:</b> <a href=3D"mailto:rcallon@juniper.net">rcallon@juniper.net</a>; =
<a href=3D"mailto:mpls-chairs@ietf.org">
mpls-chairs@ietf.org</a>; Gregory Mirsky; Jeff Tantsura; <a href=3D"mailto:=
mach.chen@huawei.com">
mach.chen@huawei.com</a>; <a href=3D"mailto:Ilya@nobulus.com">Ilya@nobulus.=
com</a><br>
<b>Subject:</b> MPLS-RT review of draft-mirsky-mpls-bfd-directed-03<o:p></o=
:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Hello,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">I have been selected as reviewer of
<a href=3D"http://tools.ietf.org/html/draft-mirsky-mpls-bfd-directed-03">ht=
tp://tools.ietf.org/html/draft-mirsky-mpls-bfd-directed-03</a>.<o:p></o:p><=
/span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">I think the draft is coherent, technica=
lly sound and operational useful. It extents the explicit path capability f=
or the backward direction of _<i>bidirectional</i>_ forwarding
 detection (BFD). The document is ready for WG adoption.<o:p></o:p></span><=
/p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Some comments:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 1.1.1, Terminology:<o:p></o:p><=
/span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">I am not sure, whether the term _<i>MPL=
S</i>_ is really required in this section.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 3.1, &#8220;Case of MPLS Data P=
lane&#8221;: Structure of sub-TLV specification.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The whole section describes, that three=
 sub-TLV are specified for usage: &#8220;Static&#8221;, &#8220;RSVP-TE&#822=
1; and &#8220;Segment Routing&#8221;. For &#8220;Static&#8221; and &#8220;R=
SVP-TE&#8221;, the draft refers to the according
 RFC (that&#8217;s fine). But the structure of this section contains only a=
 subsection for &#8220;Segment routing&#8221; and the reference to the othe=
r sub-TLV is part of this subsection. I propose to add two additional subse=
ctions &#8220;Static&#8221; (3.1.x) and &#8220;RSVP-TE&#8221; (3.1.x) with
 the references and remove it from the subsection &#8221;Segment Routing&#8=
221; to be more coherent.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 3.1.2: &#8220;Segment Routing T=
unnel Sub-TLV&nbsp;&raquo;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The section specifies the encoding of t=
he SR tunnel Sub-TLV with the encoding of the label stack elements. I think=
 it makes sense to describe the usage of this information
 in the draft (&#8220;copy this information to the label stack&#8221;). Is =
the remote PE (initiator) allowed to add additional segments bases on his l=
ocal information or is the encoded label stack strict?<o:p></o:p></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 3.3:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This section confused me. Maybe it shou=
ld be considered to be rewritten (or explained specifically to me).<o:p></o=
:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Who is the _<i>initiator</i>_ in this c=
ase for the BFD reverse path scenario?<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 3.4: &#8220;Return Codes&#8221;=
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The paragraph repeats the description t=
ext of the return code 2 times.&nbsp; The section specifies, that the egres=
s LSR _<i>MAY</i>_ send back the return code. In section 3.1.1,
 last paragraph, the behavior is specified, that the egress LSR may set up =
the BFD session or not, but in both cases, it sends back the return code (a=
re the MAYs are concatenated in the case, when the BFD session is set up &#=
8211; see also comment from Nobo?). This
 implies, that the egress LSR _<i>MUST</i>_ send the return code, when the =
reverse path is not known.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 4 &#8220;Use case scenario&#822=
1;:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The &#8220;value N&#8221; and &#8220;va=
lue M&#8221; are confusing, because it uses the same vocabulary as the node=
s in the network example (capital letter). It could be called &#8220;foobar=
&#8221; if it is
 not for interest.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;">Regards.</span><span style=3D"font-size:1=
0.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p></o:p></=
span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Thomas<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
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From: David Allan I <david.i.allan@ericsson.com>
To: Ross Callon <rcallon@juniper.net>, Gregory Mirsky <gregory.mirsky@ericsson.com>
Thread-Topic: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03
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Subject: Re: [mpls] MPLS-RT review of draft-mirsky-mpls-bfd-directed-03
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Hi

I've read the document and believe it to be close to complete.

My only concerns are


1)      Given a configuration message can support configuring multiple test=
s at a time, what are the actual consequences of one or more errors. Are th=
ose requests only invalidated or is are all the sub-TLVs in a request inval=
idated. IMO this should be clarified. Given that there are classes of error=
 that should invalidate the entire request, and those that do not necessari=
ly do so, it might be easiest to make a blanket statement that any error in=
validates the entire message.

2)      The IANA considerations section is missing sub-TLV types 300 and 40=
0.

If these items were addressed, I would be supportive of the document progre=
ssing.

Cheers
D


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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">I&#8217;ve read the docum=
ent and believe it to be close to complete.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">My only concerns are
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-.25in;mso-list:l0 level=
1 lfo1"><![if !supportLists]><span style=3D"font-size:11.0pt;font-family:&q=
uot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><span style=3D"mso-=
list:Ignore">1)<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"font-size:11.0pt;font-family:=
&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Given a configura=
tion message can support configuring multiple tests at a time, what are the=
 actual consequences of one or more errors. Are those
 requests only invalidated or is are all the sub-TLVs in a request invalida=
ted. IMO this should be clarified. Given that there are classes of error th=
at should invalidate the entire request, and those that do not necessarily =
do so, it might be easiest to make
 a blanket statement that any error invalidates the entire message. <o:p></=
o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-.25in;mso-list:l0 level=
1 lfo1"><![if !supportLists]><span style=3D"font-size:11.0pt;font-family:&q=
uot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><span style=3D"mso-=
list:Ignore">2)<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"font-size:11.0pt;font-family:=
&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">The IANA consider=
ations section is missing sub-TLV types 300 and 400.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">If these items were addre=
ssed, I would be supportive of the document progressing.<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Cheers<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">D<o:p></o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
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</div>
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</html>

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From: David Allan I <david.i.allan@ericsson.com>
To: Ross Callon <rcallon@juniper.net>, Gregory Mirsky <gregory.mirsky@ericsson.com>
Thread-Topic: draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10  was RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03
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Subject: [mpls] draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10 was RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03
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Ooops my bad.... Too many messages. My comments apply to draft-ietf-mpls-ls=
p-ping-mpls-tp-oam-conf-10...

Sorry for any confusion
D

From: David Allan I
Sent: Tuesday, August 04, 2015 10:27 AM
To: 'Ross Callon'; Gregory Mirsky
Cc: mpls@ietf.org; draft-mirsky-mpls-bfd-directed@tools.ietf.org; mpls-chai=
rs@ietf.org
Subject: RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03

Hi

I've read the document and believe it to be close to complete.

My only concerns are


1)      Given a configuration message can support configuring multiple test=
s at a time, what are the actual consequences of one or more errors. Are th=
ose requests only invalidated or is are all the sub-TLVs in a request inval=
idated. IMO this should be clarified. Given that there are classes of error=
 that should invalidate the entire request, and those that do not necessari=
ly do so, it might be easiest to make a blanket statement that any error in=
validates the entire message.

2)      The IANA considerations section is missing sub-TLV types 300 and 40=
0.

If these items were addressed, I would be supportive of the document progre=
ssing.

Cheers
D


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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Ooops my bad&#8230;. Too =
many messages. My comments apply to draft-ietf-mpls-lsp-ping-mpls-tp-oam-co=
nf-10&#8230;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Sorry for any confusion<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">D<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> David Al=
lan I
<br>
<b>Sent:</b> Tuesday, August 04, 2015 10:27 AM<br>
<b>To:</b> 'Ross Callon'; Gregory Mirsky<br>
<b>Cc:</b> mpls@ietf.org; draft-mirsky-mpls-bfd-directed@tools.ietf.org; mp=
ls-chairs@ietf.org<br>
<b>Subject:</b> RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03<o:p=
></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">I&#8217;ve read the docum=
ent and believe it to be close to complete.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">My only concerns are
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-.25in;mso-list:l0 level=
1 lfo2"><![if !supportLists]><span style=3D"font-size:11.0pt;font-family:&q=
uot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><span style=3D"mso-=
list:Ignore">1)<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"font-size:11.0pt;font-family:=
&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Given a configura=
tion message can support configuring multiple tests at a time, what are the=
 actual consequences of one or more errors. Are those
 requests only invalidated or is are all the sub-TLVs in a request invalida=
ted. IMO this should be clarified. Given that there are classes of error th=
at should invalidate the entire request, and those that do not necessarily =
do so, it might be easiest to make
 a blanket statement that any error invalidates the entire message. <o:p></=
o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-.25in;mso-list:l0 level=
1 lfo2"><![if !supportLists]><span style=3D"font-size:11.0pt;font-family:&q=
uot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><span style=3D"mso-=
list:Ignore">2)<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"font-size:11.0pt;font-family:=
&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">The IANA consider=
ations section is missing sub-TLV types 300 and 400.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">If these items were addre=
ssed, I would be supportive of the document progressing.<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Cheers<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">D<o:p></o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
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From nobody Tue Aug  4 12:19:33 2015
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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: Ross Callon <rcallon@juniper.net>
Thread-Topic: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03
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Date: Tue, 4 Aug 2015 19:19:23 +0000
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Subject: Re: [mpls] MPLS-RT review of draft-mirsky-mpls-bfd-directed-03
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Hi Ross,
many thanks for you kind consideration. I agree and support the plan you've=
 set forward.
I believe Thomas Beckhaus agreed to proposed changes that address his MPLS-=
RT review.  Work on addressing comments by Nobo still continues. We'll try =
to upload the new version by the end of this week.

                Regards,
                                Greg

From: Ross Callon [mailto:rcallon@juniper.net]
Sent: Tuesday, August 04, 2015 9:13 AM
To: Gregory Mirsky
Cc: mpls-chairs@ietf.org; Jeff Tantsura; mach.chen@huawei.com; Ilya@nobulus=
.com; Thomas.Beckhaus@telekom.de; mpls@ietf.org; draft-mirsky-mpls-bfd-dire=
cted@tools.ietf.org
Subject: RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03

Greg;

Do you feel that you are ready to post the update?

I believe that the next steps here are for you to post the update (whenever=
 the authors feel that you are ready), for me to check with the MPLS-RT rev=
iewers to make sure that they are fine with the update, to do an IPR poll, =
and then to call for WG adoption.

Thanks, Ross

From: Gregory Mirsky [mailto:gregory.mirsky@ericsson.com]
Sent: Friday, July 24, 2015 3:51 AM
To: Thomas.Beckhaus@telekom.de<mailto:Thomas.Beckhaus@telekom.de>; mpls@iet=
f.org<mailto:mpls@ietf.org>; draft-mirsky-mpls-bfd-directed@tools.ietf.org<=
mailto:draft-mirsky-mpls-bfd-directed@tools.ietf.org>
Cc: Ross Callon; mpls-chairs@ietf.org<mailto:mpls-chairs@ietf.org>; Jeff Ta=
ntsura; mach.chen@huawei.com<mailto:mach.chen@huawei.com>; Ilya@nobulus.com=
<mailto:Ilya@nobulus.com>
Subject: RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03

Hi Thomas,
would greatly appreciate if you kindly review proposed changes to address y=
our comments. I've attached diff and MS copy of what may be next version.

                Regards,
                                Greg


From: Thomas.Beckhaus@telekom.de<mailto:Thomas.Beckhaus@telekom.de> [mailto=
:Thomas.Beckhaus@telekom.de]
Sent: Tuesday, July 14, 2015 4:03 PM
To: mpls@ietf.org<mailto:mpls@ietf.org>; draft-mirsky-mpls-bfd-directed@too=
ls.ietf.org<mailto:draft-mirsky-mpls-bfd-directed@tools.ietf.org>
Cc: rcallon@juniper.net<mailto:rcallon@juniper.net>; mpls-chairs@ietf.org<m=
ailto:mpls-chairs@ietf.org>; Gregory Mirsky; Jeff Tantsura; mach.chen@huawe=
i.com<mailto:mach.chen@huawei.com>; Ilya@nobulus.com<mailto:Ilya@nobulus.co=
m>
Subject: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03

Hello,

I have been selected as reviewer of http://tools.ietf.org/html/draft-mirsky=
-mpls-bfd-directed-03.

I think the draft is coherent, technically sound and operational useful. It=
 extents the explicit path capability for the backward direction of _bidire=
ctional_ forwarding detection (BFD). The document is ready for WG adoption.

Some comments:

Section 1.1.1, Terminology:
I am not sure, whether the term _MPLS_ is really required in this section.

Section 3.1, "Case of MPLS Data Plane": Structure of sub-TLV specification.
The whole section describes, that three sub-TLV are specified for usage: "S=
tatic", "RSVP-TE" and "Segment Routing". For "Static" and "RSVP-TE", the dr=
aft refers to the according RFC (that's fine). But the structure of this se=
ction contains only a subsection for "Segment routing" and the reference to=
 the other sub-TLV is part of this subsection. I propose to add two additio=
nal subsections "Static" (3.1.x) and "RSVP-TE" (3.1.x) with the references =
and remove it from the subsection "Segment Routing" to be more coherent.

Section 3.1.2: "Segment Routing Tunnel Sub-TLV >
The section specifies the encoding of the SR tunnel Sub-TLV with the encodi=
ng of the label stack elements. I think it makes sense to describe the usag=
e of this information in the draft ("copy this information to the label sta=
ck"). Is the remote PE (initiator) allowed to add additional segments bases=
 on his local information or is the encoded label stack strict?

Section 3.3:
This section confused me. Maybe it should be considered to be rewritten (or=
 explained specifically to me).
Who is the _initiator_ in this case for the BFD reverse path scenario?

Section 3.4: "Return Codes"
The paragraph repeats the description text of the return code 2 times.  The=
 section specifies, that the egress LSR _MAY_ send back the return code. In=
 section 3.1.1, last paragraph, the behavior is specified, that the egress =
LSR may set up the BFD session or not, but in both cases, it sends back the=
 return code (are the MAYs are concatenated in the case, when the BFD sessi=
on is set up - see also comment from Nobo?). This implies, that the egress =
LSR _MUST_ send the return code, when the reverse path is not known.

Section 4 "Use case scenario":
The "value N" and "value M" are confusing, because it uses the same vocabul=
ary as the nodes in the network example (capital letter). It could be calle=
d "foobar" if it is not for interest.

Regards.

Thomas


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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi Ross,<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">many thanks for you kind =
consideration. I agree and support the plan you&#8217;ve set forward.<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">I believe Thomas Beckhaus=
 agreed to proposed changes that address his MPLS-RT review. &nbsp;Work on =
addressing comments by Nobo still continues. We&#8217;ll try to upload
 the new version by the end of this week.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; Greg<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> Ross Cal=
lon [mailto:rcallon@juniper.net]
<br>
<b>Sent:</b> Tuesday, August 04, 2015 9:13 AM<br>
<b>To:</b> Gregory Mirsky<br>
<b>Cc:</b> mpls-chairs@ietf.org; Jeff Tantsura; mach.chen@huawei.com; Ilya@=
nobulus.com; Thomas.Beckhaus@telekom.de; mpls@ietf.org; draft-mirsky-mpls-b=
fd-directed@tools.ietf.org<br>
<b>Subject:</b> RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03<o:p=
></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Greg;<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Do you feel that you are =
ready to post the update?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">I believe that the next s=
teps here are for you to post the update (whenever the authors feel that yo=
u are ready), for me to check with the MPLS-RT reviewers
 to make sure that they are fine with the update, to do an IPR poll, and th=
en to call for WG adoption.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Thanks, Ross<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> Gregory =
Mirsky [<a href=3D"mailto:gregory.mirsky@ericsson.com">mailto:gregory.mirsk=
y@ericsson.com</a>]
<br>
<b>Sent:</b> Friday, July 24, 2015 3:51 AM<br>
<b>To:</b> <a href=3D"mailto:Thomas.Beckhaus@telekom.de">Thomas.Beckhaus@te=
lekom.de</a>;
<a href=3D"mailto:mpls@ietf.org">mpls@ietf.org</a>; <a href=3D"mailto:draft=
-mirsky-mpls-bfd-directed@tools.ietf.org">
draft-mirsky-mpls-bfd-directed@tools.ietf.org</a><br>
<b>Cc:</b> Ross Callon; <a href=3D"mailto:mpls-chairs@ietf.org">mpls-chairs=
@ietf.org</a>; Jeff Tantsura;
<a href=3D"mailto:mach.chen@huawei.com">mach.chen@huawei.com</a>; <a href=
=3D"mailto:Ilya@nobulus.com">
Ilya@nobulus.com</a><br>
<b>Subject:</b> RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03<o:p=
></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi Thomas,<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">would greatly appreciate =
if you kindly review proposed changes to address your comments. I&#8217;ve =
attached diff and MS copy of what may be next version.<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; Greg<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">
<a href=3D"mailto:Thomas.Beckhaus@telekom.de">Thomas.Beckhaus@telekom.de</a=
> [<a href=3D"mailto:Thomas.Beckhaus@telekom.de">mailto:Thomas.Beckhaus@tel=
ekom.de</a>]
<br>
<b>Sent:</b> Tuesday, July 14, 2015 4:03 PM<br>
<b>To:</b> <a href=3D"mailto:mpls@ietf.org">mpls@ietf.org</a>; <a href=3D"m=
ailto:draft-mirsky-mpls-bfd-directed@tools.ietf.org">
draft-mirsky-mpls-bfd-directed@tools.ietf.org</a><br>
<b>Cc:</b> <a href=3D"mailto:rcallon@juniper.net">rcallon@juniper.net</a>; =
<a href=3D"mailto:mpls-chairs@ietf.org">
mpls-chairs@ietf.org</a>; Gregory Mirsky; Jeff Tantsura; <a href=3D"mailto:=
mach.chen@huawei.com">
mach.chen@huawei.com</a>; <a href=3D"mailto:Ilya@nobulus.com">Ilya@nobulus.=
com</a><br>
<b>Subject:</b> MPLS-RT review of draft-mirsky-mpls-bfd-directed-03<o:p></o=
:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Hello,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">I have been selected as reviewer of
<a href=3D"http://tools.ietf.org/html/draft-mirsky-mpls-bfd-directed-03">ht=
tp://tools.ietf.org/html/draft-mirsky-mpls-bfd-directed-03</a>.<o:p></o:p><=
/span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">I think the draft is coherent, technica=
lly sound and operational useful. It extents the explicit path capability f=
or the backward direction of _<i>bidirectional</i>_ forwarding
 detection (BFD). The document is ready for WG adoption.<o:p></o:p></span><=
/p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Some comments:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 1.1.1, Terminology:<o:p></o:p><=
/span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">I am not sure, whether the term _<i>MPL=
S</i>_ is really required in this section.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 3.1, &#8220;Case of MPLS Data P=
lane&#8221;: Structure of sub-TLV specification.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The whole section describes, that three=
 sub-TLV are specified for usage: &#8220;Static&#8221;, &#8220;RSVP-TE&#822=
1; and &#8220;Segment Routing&#8221;. For &#8220;Static&#8221; and &#8220;R=
SVP-TE&#8221;, the draft refers to the according
 RFC (that&#8217;s fine). But the structure of this section contains only a=
 subsection for &#8220;Segment routing&#8221; and the reference to the othe=
r sub-TLV is part of this subsection. I propose to add two additional subse=
ctions &#8220;Static&#8221; (3.1.x) and &#8220;RSVP-TE&#8221; (3.1.x) with
 the references and remove it from the subsection &#8221;Segment Routing&#8=
221; to be more coherent.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 3.1.2: &#8220;Segment Routing T=
unnel Sub-TLV&nbsp;&raquo;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The section specifies the encoding of t=
he SR tunnel Sub-TLV with the encoding of the label stack elements. I think=
 it makes sense to describe the usage of this information
 in the draft (&#8220;copy this information to the label stack&#8221;). Is =
the remote PE (initiator) allowed to add additional segments bases on his l=
ocal information or is the encoded label stack strict?<o:p></o:p></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 3.3:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This section confused me. Maybe it shou=
ld be considered to be rewritten (or explained specifically to me).<o:p></o=
:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Who is the _<i>initiator</i>_ in this c=
ase for the BFD reverse path scenario?<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 3.4: &#8220;Return Codes&#8221;=
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The paragraph repeats the description t=
ext of the return code 2 times.&nbsp; The section specifies, that the egres=
s LSR _<i>MAY</i>_ send back the return code. In section 3.1.1,
 last paragraph, the behavior is specified, that the egress LSR may set up =
the BFD session or not, but in both cases, it sends back the return code (a=
re the MAYs are concatenated in the case, when the BFD session is set up &#=
8211; see also comment from Nobo?). This
 implies, that the egress LSR _<i>MUST</i>_ send the return code, when the =
reverse path is not known.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 4 &#8220;Use case scenario&#822=
1;:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The &#8220;value N&#8221; and &#8220;va=
lue M&#8221; are confusing, because it uses the same vocabulary as the node=
s in the network example (capital letter). It could be called &#8220;foobar=
&#8221; if it is
 not for interest.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;">Regards.</span><span style=3D"font-size:1=
0.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p></o:p></=
span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Thomas<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
</div>
</body>
</html>

--_000_7347100B5761DC41A166AC17F22DF1122188DD02eusaamb103erics_--


From nobody Tue Aug  4 12:38:32 2015
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Cc: mpls@ietf.org
Subject: [mpls] I-D Action: draft-ietf-mpls-residence-time-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 Multiprotocol Label Switching Working Group of the IETF.

        Title           : Residence Time Measurement in MPLS network
        Authors         : Greg Mirsky
                          Stefano Ruffini
                          Eric Gray
                          John Drake
                          Stewart Bryant
                          Alexander Vainshtein
	Filename        : draft-ietf-mpls-residence-time-00.txt
	Pages           : 24
	Date            : 2015-08-04

Abstract:
   This document specifies G-ACh based Residence Time Measurement and
   how it can be used by time synchronization protocols being
   transported over MPLS domain.

   Residence time is the variable part of propagation delay of timing
   and synchronization messages and knowing what this delay is for each
   message allows for a more accurate determination of the delay to be
   taken into account in applying the value included in a PTP event
   message.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-mpls-residence-time/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-mpls-residence-time-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/


From nobody Wed Aug  5 08:26:44 2015
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Date: Wed, 05 Aug 2015 17:26:02 +0200
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Cc: "mpls-chairs@tools.ietf.org" <mpls-chairs@tools.ietf.org>, "draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org" <draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org>
Subject: [mpls] IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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Working Group,

We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for
working group adoption poll (can I use the abbreviation wgap?)

Ww will start with the IPR poll and then MPLS-RT and the poll.

This mail starts the IPR poll.

Are you aware of any IPR that applies to draft-kumarkini-mpls-spring-
lsp-ping?

If so, has this IPR been disclosed in compliance with IETF IPR rules
(see RFCs 3979, 4879, 3669 and 5378 for more details).

There were one IPR disclosure filed against thsi document when it still
were an individual document, it has not been re-filed against the
working group document.

If you are listed as a document author or contributor please respond to
this email regardless of whether or not you are aware of any relevant
IPR. *The response needs to be sent to the MPLS wg mailing list.* The
document will not advance to the next stage until a response has been
received from each author and contributor.

If you are on the MPLS WG email list but are not listed as an author or
contributor, then please explicitly respond only if you are aware of any
IPR that has not yet been disclosed in conformance with IETF rules.


/Loa
mpls wg co-chair
-- 


Loa Andersson                        email: loa@mail01.huawei.com
Senior MPLS Expert                          loa@pi.nu
Huawei Technologies (consultant)     phone: +46 739 81 21 64


From nobody Wed Aug  5 15:32:35 2015
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From: Eric Gray <eric.gray@ericsson.com>
To: Ross Callon <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>
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Cc: "mpls-chairs@tools.ietf.org" <mpls-chairs@tools.ietf.org>, "draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org" <draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org>
Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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I have read the draft and feel that it is ready for submission.

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: Monday, August 03, 2015 11:45 AM
To: mpls@ietf.org
Cc: mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@t=
ools.ietf.org
Subject: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-t=
p-oam-conf-10

Working Group,

This is to initiate a two week working group last call on draft-ietf-mpls-l=
sp-ping-mpls-tp-oam-conf-10.

Please send your comments to the mpls wg mailing list (mpls@ietf.org<mailto=
:mpls@ietf.org>).

There are no IPR disclosures against this document. All the authors have st=
ated that they
are not aware of any IPR that relates to this draft (two of the responses w=
ere private to
the WG chairs).

This working group last call ends Tuesday  August 18, 2015.

The previous WGLC for this document failed due to a lack of response, even =
though there were
no objections. I will remind the working group that for a WGLC a lack of re=
sponse does not imply
support; rather a lack of response implies either no opinion or a failure t=
o read the document. As
with any WGLC, working group participants are requested to read the documen=
t and comment,
and if you feel that the document is ready for publication it is appropriat=
e to respond to any WGLC
with a short and simple email indicating support.

Ross
for the MPLS WG chairs



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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">I have read the draft and=
 feel that it is ready for submission.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> mpls [ma=
ilto:mpls-bounces@ietf.org]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> Monday, August 03, 2015 11:45 AM<br>
<b>To:</b> mpls@ietf.org<br>
<b>Cc:</b> mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam=
-conf@tools.ietf.org<br>
<b>Subject:</b> [mpls] working group last call for draft-ietf-mpls-lsp-ping=
-mpls-tp-oam-conf-10<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Working Group,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to initiate a two week working =
group last call on draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments to the mpls w=
g mailing list (<a href=3D"mailto:mpls@ietf.org"><span style=3D"color:windo=
wtext">mpls@ietf.org</span></a>).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">There are no IPR disclosures against th=
is document. All the authors have stated that they
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">are not aware of any IPR that relates t=
o this draft (two of the responses were private to
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">the WG chairs).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This working group last call ends Tuesd=
ay&nbsp; August 18, 2015.&nbsp;
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The previous WGLC for this document fai=
led due to a lack of response, even though there were
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">no objections. I will remind the workin=
g group that for a WGLC a lack of response does not imply
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">support; rather a lack of response impl=
ies either no opinion or a failure to read the document. As
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with any WGLC, working group participan=
ts are requested to read the document and comment,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">and if you feel that the document is re=
ady for publication it is appropriate to respond to any WGLC
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with a short and simple email indicatin=
g support.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">for the MPLS WG chairs<o:p></o:p></span=
></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
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From nobody Wed Aug  5 16:23:58 2015
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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: Mach Chen <mach.chen@huawei.com>, Nobo Akiya <nobo.akiya.dev@gmail.com>, mpls <mpls@ietf.org>, "draft-mirsky-mpls-bfd-directed@tools.ietf.org" <draft-mirsky-mpls-bfd-directed@tools.ietf.org>
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Cc: Ross Callon <rcallon@juniper.net>
Subject: Re: [mpls] Review of draft-mirsky-mpls-bfd-directed-03
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--_000_7347100B5761DC41A166AC17F22DF1122188F2A6eusaamb103erics_--


From nobody Thu Aug  6 01:34:09 2015
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Date: Thu, 06 Aug 2015 10:33:59 +0200
From: Loa Andersson <loa@pi.nu>
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Subject: [mpls] Correction - IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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Folks,

One of the authors of the document has found an error with the text
of the IPR Poll mail, thanks Nagendra! When you respond to the IPR poll
please respond to this mail (nothing bad will happen if you respond
to the original mail :) ).

The correct text should be:

Working Group,

We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for
working group adoption poll (can I use the abbreviation wgap?)

We will start with the IPR poll and then MPLS-RT and the poll.

This mail starts the IPR poll.

Are you aware of any IPR that applies to draft-kumarkini-mpls-spring-
lsp-ping?

If so, has this IPR been disclosed in compliance with IETF IPR rules
(see RFCs 3979, 4879, 3669 and 5378 for more details).

There no IPR disclosures filed against this document.

If you are listed as a document author or contributor please respond to
this email regardless of whether or not you are aware of any relevant
IPR. *The response needs to be sent to the MPLS wg mailing list.* The
document will not advance to the next stage until a response has been
received from each author and contributor.

If you are on the MPLS WG email list but are not listed as an author or
contributor, then please explicitly respond only if you are aware of any
IPR that has not yet been disclosed in conformance with IETF rules.


/Loa
mpls wg co-chair


From nobody Thu Aug  6 02:13:49 2015
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From: "Zhangxian (Xian)" <zhang.xian@huawei.com>
To: Ross Callon <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Date: Thu, 6 Aug 2015 09:13:39 +0000
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Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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<body lang=3D"ZH-CN" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I have jus=
t reviewed this draft and believe it is ready for publication.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Regards,<b=
r>
Xian<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;"> mpls [mailto:mpls-bounces@ietf.org]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> 2015</span><span style=3D"font-size:10.0pt;font-family:SimSun"=
>=C4=EA</span><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&q=
uot;Tahoma&quot;,&quot;sans-serif&quot;">8</span><span style=3D"font-size:1=
0.0pt;font-family:SimSun">=D4=C2</span><span lang=3D"EN-US" style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">3</span><=
span style=3D"font-size:10.0pt;font-family:SimSun">=C8=D5</span><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;s=
ans-serif&quot;">
 23:45<br>
<b>To:</b> mpls@ietf.org<br>
<b>Cc:</b> mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam=
-conf@tools.ietf.org<br>
<b>Subject:</b> [mpls] working group last call for draft-ietf-mpls-lsp-ping=
-mpls-tp-oam-conf-10<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">Working Group,<o:p></o:p=
></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">This is to initiate a tw=
o week working group last call on draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf=
-10.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">Please send your comment=
s to the mpls wg mailing list (<a href=3D"mailto:mpls@ietf.org"><span style=
=3D"color:windowtext">mpls@ietf.org</span></a>).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">There are no IPR disclos=
ures against this document. All the authors have stated that they
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">are not aware of any IPR=
 that relates to this draft (two of the responses were private to
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">the WG chairs).<o:p></o:=
p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">This working group last =
call ends Tuesday&nbsp; August 18, 2015.&nbsp;
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">The previous WGLC for th=
is document failed due to a lack of response, even though there were
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">no objections. I will re=
mind the working group that for a WGLC a lack of response does not imply
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">support; rather a lack o=
f response implies either no opinion or a failure to read the document. As
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">with any WGLC, working g=
roup participants are requested to read the document and comment,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">and if you feel that the=
 document is ready for publication it is appropriate to respond to any WGLC
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">with a short and simple =
email indicating support.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">Ross<o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">for the MPLS WG chairs<o=
:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span>=
</p>
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From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>
To: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Correction - [mpls] IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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Subject: Re: [mpls] Correction - IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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Hi,

I am not aware of any IPR.

Thanks,
Nagendra

On 8/6/15, 4:33 AM, "Loa Andersson" <loa@pi.nu> wrote:

>Folks,
>
>One of the authors of the document has found an error with the text
>of the IPR Poll mail, thanks Nagendra! When you respond to the IPR poll
>please respond to this mail (nothing bad will happen if you respond
>to the original mail :) ).
>
>The correct text should be:
>
>Working Group,
>
>We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for
>working group adoption poll (can I use the abbreviation wgap?)
>
>We will start with the IPR poll and then MPLS-RT and the poll.
>
>This mail starts the IPR poll.
>
>Are you aware of any IPR that applies to draft-kumarkini-mpls-spring-
>lsp-ping?
>
>If so, has this IPR been disclosed in compliance with IETF IPR rules
>(see RFCs 3979, 4879, 3669 and 5378 for more details).
>
>There no IPR disclosures filed against this document.
>
>If you are listed as a document author or contributor please respond to
>this email regardless of whether or not you are aware of any relevant
>IPR. *The response needs to be sent to the MPLS wg mailing list.* The
>document will not advance to the next stage until a response has been
>received from each author and contributor.
>
>If you are on the MPLS WG email list but are not listed as an author or
>contributor, then please explicitly respond only if you are aware of any
>IPR that has not yet been disclosed in conformance with IETF rules.
>
>
>/Loa
>mpls wg co-chair
>


From nobody Thu Aug  6 03:16:48 2015
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Subject: [mpls] Implementation poll on draft-ietf-mpls-self-ping
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Working Group,

We are preparing draft-ietf-mpls-self-ping for publication request. One
step in this is the Shepherd Write-up. One piece of information we need
for this is about existing implementations.

This mail start the implementation poll for draft-ietf-mpls-self-ping.

If you have an implementation or know about one, please send the
information to the mpls wg mailing list or to the mpls wg chairs.

/Loa
mpls wg co-chair

-- 


Loa Andersson                        email: loa@mail01.huawei.com
Senior MPLS Expert                          loa@pi.nu
Huawei Technologies (consultant)     phone: +46 739 81 21 64


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From: Uma Chunduri <uma.chunduri@ericsson.com>
To: Ross Callon <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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--_000_1B502206DFA0C544B7A6046915200863512B1B63eusaamb105erics_
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Support.

--
Uma C.
From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: Monday, August 03, 2015 8:45 AM
To: mpls@ietf.org
Cc: mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@t=
ools.ietf.org
Subject: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-t=
p-oam-conf-10

Working Group,

This is to initiate a two week working group last call on draft-ietf-mpls-l=
sp-ping-mpls-tp-oam-conf-10.

Please send your comments to the mpls wg mailing list (mpls@ietf.org<mailto=
:mpls@ietf.org>).

There are no IPR disclosures against this document. All the authors have st=
ated that they
are not aware of any IPR that relates to this draft (two of the responses w=
ere private to
the WG chairs).

This working group last call ends Tuesday  August 18, 2015.

The previous WGLC for this document failed due to a lack of response, even =
though there were
no objections. I will remind the working group that for a WGLC a lack of re=
sponse does not imply
support; rather a lack of response implies either no opinion or a failure t=
o read the document. As
with any WGLC, working group participants are requested to read the documen=
t and comment,
and if you feel that the document is ready for publication it is appropriat=
e to respond to any WGLC
with a short and simple email indicating support.

Ross
for the MPLS WG chairs



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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">--<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Uma C.<o:p></o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> mpls [ma=
ilto:mpls-bounces@ietf.org]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> Monday, August 03, 2015 8:45 AM<br>
<b>To:</b> mpls@ietf.org<br>
<b>Cc:</b> mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam=
-conf@tools.ietf.org<br>
<b>Subject:</b> [mpls] working group last call for draft-ietf-mpls-lsp-ping=
-mpls-tp-oam-conf-10<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Working Group,<o:p></o:p></span></p>
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<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to initiate a two week working =
group last call on draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
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<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments to the mpls w=
g mailing list (<a href=3D"mailto:mpls@ietf.org"><span style=3D"color:windo=
wtext">mpls@ietf.org</span></a>).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">There are no IPR disclosures against th=
is document. All the authors have stated that they
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">are not aware of any IPR that relates t=
o this draft (two of the responses were private to
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">the WG chairs).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This working group last call ends Tuesd=
ay&nbsp; August 18, 2015.&nbsp;
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The previous WGLC for this document fai=
led due to a lack of response, even though there were
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">no objections. I will remind the workin=
g group that for a WGLC a lack of response does not imply
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">support; rather a lack of response impl=
ies either no opinion or a failure to read the document. As
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with any WGLC, working group participan=
ts are requested to read the document and comment,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">and if you feel that the document is re=
ady for publication it is appropriate to respond to any WGLC
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with a short and simple email indicatin=
g support.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">for the MPLS WG chairs<o:p></o:p></span=
></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
</div>
</body>
</html>

--_000_1B502206DFA0C544B7A6046915200863512B1B63eusaamb105erics_--


From nobody Fri Aug  7 01:03:44 2015
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From: Mach Chen <mach.chen@huawei.com>
To: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Correction - [mpls] IPR poll on draft-kumarkini-mpls-spring-lsp-ping
Thread-Index: AQHQz5Mnuv8k0JEGokmFWvQLu0nzip3+IAWAgAIPt1A=
Date: Fri, 7 Aug 2015 08:03:32 +0000
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Subject: Re: [mpls] Correction - IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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Hi,

I am not aware of any IPR related to this document.

Best regards,
Mach

> -----Original Message-----
> From: Loa Andersson [mailto:loa@pi.nu]
> Sent: Thursday, August 06, 2015 4:34 PM
> To: mpls@ietf.org
> Cc: mpls-chairs@tools.ietf.org;
> draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org
> Subject: Correction - [mpls] IPR poll on draft-kumarkini-mpls-spring-lsp-=
ping
>=20
> Folks,
>=20
> One of the authors of the document has found an error with the text of th=
e IPR
> Poll mail, thanks Nagendra! When you respond to the IPR poll please respo=
nd
> to this mail (nothing bad will happen if you respond to the original mail=
 :) ).
>=20
> The correct text should be:
>=20
> Working Group,
>=20
> We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for worki=
ng
> group adoption poll (can I use the abbreviation wgap?)
>=20
> We will start with the IPR poll and then MPLS-RT and the poll.
>=20
> This mail starts the IPR poll.
>=20
> Are you aware of any IPR that applies to draft-kumarkini-mpls-spring- lsp=
-ping?
>=20
> If so, has this IPR been disclosed in compliance with IETF IPR rules (see=
 RFCs
> 3979, 4879, 3669 and 5378 for more details).
>=20
> There no IPR disclosures filed against this document.
>=20
> If you are listed as a document author or contributor please respond to t=
his
> email regardless of whether or not you are aware of any relevant IPR. *Th=
e
> response needs to be sent to the MPLS wg mailing list.* The document will=
 not
> advance to the next stage until a response has been received from each au=
thor
> and contributor.
>=20
> If you are on the MPLS WG email list but are not listed as an author or
> contributor, then please explicitly respond only if you are aware of any =
IPR that
> has not yet been disclosed in conformance with IETF rules.
>=20
>=20
> /Loa
> mpls wg co-chair


From nobody Fri Aug  7 09:01:40 2015
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From: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
To: Loa Andersson <loa@pi.nu>
Thread-Topic: Correction - [mpls] IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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Subject: Re: [mpls] Correction - IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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Loa,

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

Thanks,

=97 Carlos.

> On Aug 6, 2015, at 4:33 AM, Loa Andersson <loa@pi.nu> wrote:
>=20
> Folks,
>=20
> One of the authors of the document has found an error with the text
> of the IPR Poll mail, thanks Nagendra! When you respond to the IPR =
poll
> please respond to this mail (nothing bad will happen if you respond
> to the original mail :) ).
>=20
> The correct text should be:
>=20
> Working Group,
>=20
> We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for
> working group adoption poll (can I use the abbreviation wgap?)
>=20
> We will start with the IPR poll and then MPLS-RT and the poll.
>=20
> This mail starts the IPR poll.
>=20
> Are you aware of any IPR that applies to draft-kumarkini-mpls-spring-
> lsp-ping?
>=20
> If so, has this IPR been disclosed in compliance with IETF IPR rules
> (see RFCs 3979, 4879, 3669 and 5378 for more details).
>=20
> There no IPR disclosures filed against this document.
>=20
> If you are listed as a document author or contributor please respond =
to
> this email regardless of whether or not you are aware of any relevant
> IPR. *The response needs to be sent to the MPLS wg mailing list.* The
> document will not advance to the next stage until a response has been
> received from each author and contributor.
>=20
> If you are on the MPLS WG email list but are not listed as an author =
or
> contributor, then please explicitly respond only if you are aware of =
any
> IPR that has not yet been disclosed in conformance with IETF rules.
>=20
>=20
> /Loa
> mpls wg co-chair
>=20


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From nobody Fri Aug  7 09:02:59 2015
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Subject: [mpls] Review of draft-kumarkini-mpls-string-lsp-ping
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Hi MPLS WG & draft authors,

Thanks for the work on this draft -- having working OAM functions in a 
SR network using the MPLS data plane is definitely something that I 
think is needed - and if (of course) seems a good plan to extend the 
existing RFC4379 mechanisms to work with SR.

Generally, I think the document defines what it needs to - but there are 
a few technical issues and/or clarifications of concepts that I think 
are required to make this robust and implementable. A few of them seem 
to stem from changes that have been made to the SR architecture and 
MPLS-SR dataplane documents as they have made it through the SPRING 
working group.

I've laid out some of my specific questions/comments below:

  * Introduction:
      o References to draft-filsfils-rtgwg-segment-routing are outdated
        - these should be updated to reflect the SPRING WG's segment
        routing architecture I-D: draft-ietf-spring-segment-routing.
      o I suspect that it will also be advantageous for this draft to
        reference draft-ietf-spring-segment-routing-mpls - to provide
        the reader with information as to how the segment routing
        architecture is implemented in MPLS.
      o In this section  there is a reference to "segment assignment ...
        not [being on a] hop-by-hop- basis"  - this is quite an
        ambiguous statement (consider adjacency segments, these are
        locally assigned by the originating LSR - and do not have any
        meaning outside of this particular LSR's LFIB). Additionally
        where a prefix SID is generated, then the current format that
        the IGP solutions drafts provide gives a means to do this via an
        index which then allows the label to be allocated (in this case
        the use of the term 'segment' makes it unclear whether we are
        talking about a SID or a label). From my reading, the intention
        here to express that in the SR architecture it is possible
        (where two nodes are configured with the same SRGB) that a
        particular segment identifier (particularly an IGP Prefix SID)
        may be correctly forwarded according to the FEC Stack TLV, even
        though the intended path was not taken. If this is what the
        sentence is trying convey, which I think it is, based on the
        discussion in Section 3.1, then it'd be good if this could be
        explicitly mentioned.
  * Section 4:
      o In the naming of the sub-TLVs for Segment ID, I didn't
        understand the need for these to be specifically named as
        "IPv[46] Prefix Node Segment ID" - is there a specific reason
        that one would restrict these sub-TLVs to being relevant to only
        Node SIDs compared to generic IGP Prefix SIDs (which is what is
        implied, to me)? I don't think there is any such restriction.
          + I think there may have been some change in terminology here
            in the SR architecture since the original document was
            written - the aforementioned draft clarified some wording
            somewhere along the way such that a Node-SID is just a
            special name for a particular IGP-Prefix-SID that uniquely
            identifies an LSR.
  * Section 6:
      o 6.1: The text here handles cases where an LSR might remove
        labels from the stack (which is based on both Adj-SID and
        Node-SID), but does not handle the case where actually labels
        might be added to the stack. In the case that we have a binding
        segment being advertised
        (https://tools.ietf.org/html/draft-ietf-spring-segment-routing-04#section-3.6),
        then in fact a single SID might be popped and replaced with N
        other labels (corresponding to labels that are assigned by
        OSPF/IS-IS or some other protocol). Does the wording here need
        to be clarified to say that for traceroute the originating LSR
        MAY also add these new FECs to the Target FEC Stack TLV? Doing
        so would allow it to determine the mapping along that subsequent
        bound LSP.
      o 6.2: Again, I think this text needs to refer to all Prefix SIDs 
        not just the Node-SID.
      o What are the plans to expand §6.4? For example, are there
        clarifications required where SR might introduce new forwarding
        decisions that could be erroneous -- one that might come to mind
        here is that the Adj-SID is being advertised in the IGP for a
        link that does not support labelled forwarding.
  * Section 7:
      o Can the authors clarify what is meant by a 'service segment' in
        this context? draft-ietf-spring-segment-routing does not define
        this term. I know there was originally some discussion of use of
        a particular segment to forward through some intermediate
        function - but at this point, I don't think that there is a
        definition of this anywhere in the SPRING documents.
      o I'm unclear on the intention of this section -- the text reads
        that the LSR should not apply the service function to the
        forwarded packet. To this end, is the operational limitation
        that should be noted here that LSP Ping and Traceroute are not
        suitable to validate paths when MPLS SR service segments are
        used? If this is the case, it would be very useful to state this
        up-front such that this limitation is understood by an operator.

Additionally, there are a few gramatical issues - but I assume that 
these will be cleaned up as we progress this document/with the RFC 
editor, so I haven't called them out.

Thanks for your time considering these comments!

Cheers,
r.

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<div style="font-family: tt;"><span style="font-family: monospace;">Hi 
MPLS WG &amp; draft authors,<br><br>Thanks for the work on this draft --
 having working OAM functions in a SR network using the MPLS data plane 
is definitely something that I think is needed - and if (of course) 
seems a good plan to extend the existing RFC4379 mechanisms to work with
 SR.<br><br>Generally, I think the document defines what it needs to - 
but there are a few technical issues and/or clarifications of concepts 
that I think are required to make this robust and implementable. A few 
of them seem to stem from changes that have been made to the SR 
architecture and MPLS-SR dataplane documents as they have made it 
through the SPRING working group.<br><br>I've laid out some of my 
specific questions/comments below:<br><br></span><ul style="font-family:
 monospace;"><li>Introduction:</li><ul><li>References to 
draft-filsfils-rtgwg-segment-routing are outdated - these should be 
updated to reflect the SPRING WG's segment routing architecture I-D: 
draft-ietf-spring-segment-routing.</li><li>I suspect that it will also 
be advantageous for this draft to reference 
draft-ietf-spring-segment-routing-mpls - to provide the reader with 
information as to how the segment routing architecture is implemented in
 MPLS.</li><li>In this section&nbsp; there is a reference to "segment 
assignment ... not [being on a] hop-by-hop- basis"&nbsp; - this is quite an 
ambiguous statement (consider adjacency segments, these are locally 
assigned by the originating LSR - and do not have any meaning outside of
 this particular LSR's LFIB). Additionally where a prefix SID is 
generated, then the current format that the IGP solutions drafts provide
 gives a means to do this via an index which then allows the label to be
 allocated (in this case the use of the term 'segment' makes it unclear 
whether we are talking about a SID or a label). From my reading, the 
intention here to express that in the SR architecture it is possible 
(where two nodes are configured with the same SRGB) that a particular 
segment identifier (particularly an IGP Prefix SID) may be correctly 
forwarded according to the FEC Stack TLV, even though the intended path 
was not taken. If this is what the sentence is trying convey, which I 
think it is, based on the discussion in Section 3.1, then it'd be good 
if this could be explicitly mentioned.<br></li></ul><li>Section 4:</li><ul><li>In
 the naming of the sub-TLVs for Segment ID, I didn't understand the need
 for these to be specifically named as "IPv[46] Prefix Node Segment ID" -
 is there a specific reason that one would restrict these sub-TLVs to 
being relevant to only Node SIDs compared to generic IGP Prefix SIDs 
(which is what is implied, to me)? I don't think there is any such 
restriction.<br></li><ul><li>I think there may have been some change in 
terminology here in the SR architecture since the original document was 
written - the aforementioned draft clarified some wording somewhere 
along the way such that a Node-SID is just a special name for a 
particular IGP-Prefix-SID that uniquely identifies an LSR.<br></li></ul></ul><li>Section
 6:</li><ul><li>6.1: The text here handles cases where an LSR might 
remove labels from the stack (which is based on both Adj-SID and 
Node-SID), but does not handle the case where actually labels might be 
added to the stack. In the case that we have a binding segment being 
advertised 
(<a class="moz-txt-link-freetext" href="https://tools.ietf.org/html/draft-ietf-spring-segment-routing-04#section-3.6">https://tools.ietf.org/html/draft-ietf-spring-segment-routing-04#section-3.6</a>),
 then in fact a single SID might be popped and replaced with N other 
labels (corresponding to labels that are assigned by OSPF/IS-IS or some 
other protocol). Does the wording here need to be clarified to say that 
for traceroute the originating LSR MAY also add these new FECs to the 
Target FEC Stack TLV? Doing so would allow it to determine the mapping 
along that subsequent bound LSP.</li><li>6.2: Again, I think this text 
needs to refer to all Prefix SIDs&nbsp; not just the Node-SID.</li><li>What 
are the plans to expand &sect;6.4? For example, are there clarifications 
required where SR might introduce new forwarding decisions that could be
 erroneous -- one that might come to mind here is that the Adj-SID is 
being advertised in the IGP for a link that does not support labelled 
forwarding.</li></ul><li>Section 7:</li><ul><li>Can the authors clarify 
what is meant by a 'service segment' in this context? 
draft-ietf-spring-segment-routing does not define this term. I know 
there was originally some discussion of use of a particular segment to 
forward through some intermediate function - but at this point, I don't 
think that there is a definition of this anywhere in the SPRING 
documents.<br></li><li>I'm unclear on the intention of this section -- 
the text reads that the LSR should not apply the service function to the
 forwarded packet. To this end, is the operational limitation that 
should be noted here that LSP Ping and Traceroute are not suitable to 
validate paths when MPLS SR service segments are used? If this is the 
case, it would be very useful to state this up-front such that this 
limitation is understood by an operator.</li></ul></ul><span 
style="font-family: monospace;">Additionally, there are a few gramatical
 issues - but I assume that these will be cleaned up as we progress this
 document/with the RFC editor, so I haven't called them out.</span><br 
style="font-family: monospace;"><br style="font-family: monospace;"><span
 style="font-family: monospace;">Thanks for your time considering these 
comments!</span><br style="font-family: monospace;"><br 
style="font-family: monospace;"><span style="font-family: monospace;">Cheers,</span><br
 style="font-family: monospace;"><span style="font-family: monospace;">r.</span><br
 style="font-family: monospace;"><span style="font-family: monospace;"></span></div>
</body>
</html>

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Subject: [mpls] I-D Action: draft-mirsky-mpls-bfd-directed-04.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 Multiprotocol Label Switching Working Group of the IETF.

        Title           : Bidirectional Forwarding Detection (BFD) Directed Return Path
        Authors         : Greg Mirsky
                          Jeff  Tantsura
                          Ilya Varlashkin
                          Mach(Guoyi) Chen
	Filename        : draft-mirsky-mpls-bfd-directed-04.txt
	Pages           : 10
	Date            : 2015-08-07

Abstract:
   Bidirectional Forwarding Detection (BFD) is expected to monitor bi-
   directional paths.  When a BFD session monitors in its forward
   direction an explicitly routed path there is a need to be able to
   direct egress BFD peer to use specific path as reverse direction of
   the BFD session.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-mirsky-mpls-bfd-directed/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-mirsky-mpls-bfd-directed-04

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-mirsky-mpls-bfd-directed-04


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: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: Ross Callon <rcallon@juniper.net>
Thread-Topic: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03
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Subject: Re: [mpls] MPLS-RT review of draft-mirsky-mpls-bfd-directed-03
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Dear Ross, et. al,
we have posted the update. We hope we've addressed comments received from T=
homas and Nobo during MPLS-RT review.


                Regards,
                                Greg

From: Ross Callon [mailto:rcallon@juniper.net]
Sent: Tuesday, August 04, 2015 9:13 AM
To: Gregory Mirsky
Cc: mpls-chairs@ietf.org; Jeff Tantsura; mach.chen@huawei.com; Ilya@nobulus=
.com; Thomas.Beckhaus@telekom.de; mpls@ietf.org; draft-mirsky-mpls-bfd-dire=
cted@tools.ietf.org
Subject: RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03

Greg;

Do you feel that you are ready to post the update?

I believe that the next steps here are for you to post the update (whenever=
 the authors feel that you are ready), for me to check with the MPLS-RT rev=
iewers to make sure that they are fine with the update, to do an IPR poll, =
and then to call for WG adoption.

Thanks, Ross

From: Gregory Mirsky [mailto:gregory.mirsky@ericsson.com]
Sent: Friday, July 24, 2015 3:51 AM
To: Thomas.Beckhaus@telekom.de<mailto:Thomas.Beckhaus@telekom.de>; mpls@iet=
f.org<mailto:mpls@ietf.org>; draft-mirsky-mpls-bfd-directed@tools.ietf.org<=
mailto:draft-mirsky-mpls-bfd-directed@tools.ietf.org>
Cc: Ross Callon; mpls-chairs@ietf.org<mailto:mpls-chairs@ietf.org>; Jeff Ta=
ntsura; mach.chen@huawei.com<mailto:mach.chen@huawei.com>; Ilya@nobulus.com=
<mailto:Ilya@nobulus.com>
Subject: RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03

Hi Thomas,
would greatly appreciate if you kindly review proposed changes to address y=
our comments. I've attached diff and MS copy of what may be next version.

                Regards,
                                Greg


From: Thomas.Beckhaus@telekom.de<mailto:Thomas.Beckhaus@telekom.de> [mailto=
:Thomas.Beckhaus@telekom.de]
Sent: Tuesday, July 14, 2015 4:03 PM
To: mpls@ietf.org<mailto:mpls@ietf.org>; draft-mirsky-mpls-bfd-directed@too=
ls.ietf.org<mailto:draft-mirsky-mpls-bfd-directed@tools.ietf.org>
Cc: rcallon@juniper.net<mailto:rcallon@juniper.net>; mpls-chairs@ietf.org<m=
ailto:mpls-chairs@ietf.org>; Gregory Mirsky; Jeff Tantsura; mach.chen@huawe=
i.com<mailto:mach.chen@huawei.com>; Ilya@nobulus.com<mailto:Ilya@nobulus.co=
m>
Subject: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03

Hello,

I have been selected as reviewer of http://tools.ietf.org/html/draft-mirsky=
-mpls-bfd-directed-03.

I think the draft is coherent, technically sound and operational useful. It=
 extents the explicit path capability for the backward direction of _bidire=
ctional_ forwarding detection (BFD). The document is ready for WG adoption.

Some comments:

Section 1.1.1, Terminology:
I am not sure, whether the term _MPLS_ is really required in this section.

Section 3.1, "Case of MPLS Data Plane": Structure of sub-TLV specification.
The whole section describes, that three sub-TLV are specified for usage: "S=
tatic", "RSVP-TE" and "Segment Routing". For "Static" and "RSVP-TE", the dr=
aft refers to the according RFC (that's fine). But the structure of this se=
ction contains only a subsection for "Segment routing" and the reference to=
 the other sub-TLV is part of this subsection. I propose to add two additio=
nal subsections "Static" (3.1.x) and "RSVP-TE" (3.1.x) with the references =
and remove it from the subsection "Segment Routing" to be more coherent.

Section 3.1.2: "Segment Routing Tunnel Sub-TLV >
The section specifies the encoding of the SR tunnel Sub-TLV with the encodi=
ng of the label stack elements. I think it makes sense to describe the usag=
e of this information in the draft ("copy this information to the label sta=
ck"). Is the remote PE (initiator) allowed to add additional segments bases=
 on his local information or is the encoded label stack strict?

Section 3.3:
This section confused me. Maybe it should be considered to be rewritten (or=
 explained specifically to me).
Who is the _initiator_ in this case for the BFD reverse path scenario?

Section 3.4: "Return Codes"
The paragraph repeats the description text of the return code 2 times.  The=
 section specifies, that the egress LSR _MAY_ send back the return code. In=
 section 3.1.1, last paragraph, the behavior is specified, that the egress =
LSR may set up the BFD session or not, but in both cases, it sends back the=
 return code (are the MAYs are concatenated in the case, when the BFD sessi=
on is set up - see also comment from Nobo?). This implies, that the egress =
LSR _MUST_ send the return code, when the reverse path is not known.

Section 4 "Use case scenario":
The "value N" and "value M" are confusing, because it uses the same vocabul=
ary as the nodes in the network example (capital letter). It could be calle=
d "foobar" if it is not for interest.

Regards.

Thomas


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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Dear Ross, et. al,<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">we have posted the update=
. We hope we&#8217;ve addressed comments received from Thomas and Nobo duri=
ng MPLS-RT review.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; Greg<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> Ross Cal=
lon [mailto:rcallon@juniper.net]
<br>
<b>Sent:</b> Tuesday, August 04, 2015 9:13 AM<br>
<b>To:</b> Gregory Mirsky<br>
<b>Cc:</b> mpls-chairs@ietf.org; Jeff Tantsura; mach.chen@huawei.com; Ilya@=
nobulus.com; Thomas.Beckhaus@telekom.de; mpls@ietf.org; draft-mirsky-mpls-b=
fd-directed@tools.ietf.org<br>
<b>Subject:</b> RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03<o:p=
></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Greg;<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Do you feel that you are =
ready to post the update?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">I believe that the next s=
teps here are for you to post the update (whenever the authors feel that yo=
u are ready), for me to check with the MPLS-RT reviewers
 to make sure that they are fine with the update, to do an IPR poll, and th=
en to call for WG adoption.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Thanks, Ross<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> Gregory =
Mirsky [<a href=3D"mailto:gregory.mirsky@ericsson.com">mailto:gregory.mirsk=
y@ericsson.com</a>]
<br>
<b>Sent:</b> Friday, July 24, 2015 3:51 AM<br>
<b>To:</b> <a href=3D"mailto:Thomas.Beckhaus@telekom.de">Thomas.Beckhaus@te=
lekom.de</a>;
<a href=3D"mailto:mpls@ietf.org">mpls@ietf.org</a>; <a href=3D"mailto:draft=
-mirsky-mpls-bfd-directed@tools.ietf.org">
draft-mirsky-mpls-bfd-directed@tools.ietf.org</a><br>
<b>Cc:</b> Ross Callon; <a href=3D"mailto:mpls-chairs@ietf.org">mpls-chairs=
@ietf.org</a>; Jeff Tantsura;
<a href=3D"mailto:mach.chen@huawei.com">mach.chen@huawei.com</a>; <a href=
=3D"mailto:Ilya@nobulus.com">
Ilya@nobulus.com</a><br>
<b>Subject:</b> RE: MPLS-RT review of draft-mirsky-mpls-bfd-directed-03<o:p=
></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi Thomas,<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">would greatly appreciate =
if you kindly review proposed changes to address your comments. I&#8217;ve =
attached diff and MS copy of what may be next version.<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; Greg<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">
<a href=3D"mailto:Thomas.Beckhaus@telekom.de">Thomas.Beckhaus@telekom.de</a=
> [<a href=3D"mailto:Thomas.Beckhaus@telekom.de">mailto:Thomas.Beckhaus@tel=
ekom.de</a>]
<br>
<b>Sent:</b> Tuesday, July 14, 2015 4:03 PM<br>
<b>To:</b> <a href=3D"mailto:mpls@ietf.org">mpls@ietf.org</a>; <a href=3D"m=
ailto:draft-mirsky-mpls-bfd-directed@tools.ietf.org">
draft-mirsky-mpls-bfd-directed@tools.ietf.org</a><br>
<b>Cc:</b> <a href=3D"mailto:rcallon@juniper.net">rcallon@juniper.net</a>; =
<a href=3D"mailto:mpls-chairs@ietf.org">
mpls-chairs@ietf.org</a>; Gregory Mirsky; Jeff Tantsura; <a href=3D"mailto:=
mach.chen@huawei.com">
mach.chen@huawei.com</a>; <a href=3D"mailto:Ilya@nobulus.com">Ilya@nobulus.=
com</a><br>
<b>Subject:</b> MPLS-RT review of draft-mirsky-mpls-bfd-directed-03<o:p></o=
:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Hello,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">I have been selected as reviewer of
<a href=3D"http://tools.ietf.org/html/draft-mirsky-mpls-bfd-directed-03">ht=
tp://tools.ietf.org/html/draft-mirsky-mpls-bfd-directed-03</a>.<o:p></o:p><=
/span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">I think the draft is coherent, technica=
lly sound and operational useful. It extents the explicit path capability f=
or the backward direction of _<i>bidirectional</i>_ forwarding
 detection (BFD). The document is ready for WG adoption.<o:p></o:p></span><=
/p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Some comments:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 1.1.1, Terminology:<o:p></o:p><=
/span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">I am not sure, whether the term _<i>MPL=
S</i>_ is really required in this section.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 3.1, &#8220;Case of MPLS Data P=
lane&#8221;: Structure of sub-TLV specification.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The whole section describes, that three=
 sub-TLV are specified for usage: &#8220;Static&#8221;, &#8220;RSVP-TE&#822=
1; and &#8220;Segment Routing&#8221;. For &#8220;Static&#8221; and &#8220;R=
SVP-TE&#8221;, the draft refers to the according
 RFC (that&#8217;s fine). But the structure of this section contains only a=
 subsection for &#8220;Segment routing&#8221; and the reference to the othe=
r sub-TLV is part of this subsection. I propose to add two additional subse=
ctions &#8220;Static&#8221; (3.1.x) and &#8220;RSVP-TE&#8221; (3.1.x) with
 the references and remove it from the subsection &#8221;Segment Routing&#8=
221; to be more coherent.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 3.1.2: &#8220;Segment Routing T=
unnel Sub-TLV&nbsp;&raquo;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The section specifies the encoding of t=
he SR tunnel Sub-TLV with the encoding of the label stack elements. I think=
 it makes sense to describe the usage of this information
 in the draft (&#8220;copy this information to the label stack&#8221;). Is =
the remote PE (initiator) allowed to add additional segments bases on his l=
ocal information or is the encoded label stack strict?<o:p></o:p></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 3.3:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This section confused me. Maybe it shou=
ld be considered to be rewritten (or explained specifically to me).<o:p></o=
:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Who is the _<i>initiator</i>_ in this c=
ase for the BFD reverse path scenario?<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 3.4: &#8220;Return Codes&#8221;=
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The paragraph repeats the description t=
ext of the return code 2 times.&nbsp; The section specifies, that the egres=
s LSR _<i>MAY</i>_ send back the return code. In section 3.1.1,
 last paragraph, the behavior is specified, that the egress LSR may set up =
the BFD session or not, but in both cases, it sends back the return code (a=
re the MAYs are concatenated in the case, when the BFD session is set up &#=
8211; see also comment from Nobo?). This
 implies, that the egress LSR _<i>MUST</i>_ send the return code, when the =
reverse path is not known.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Section 4 &#8220;Use case scenario&#822=
1;:<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The &#8220;value N&#8221; and &#8220;va=
lue M&#8221; are confusing, because it uses the same vocabulary as the node=
s in the network example (capital letter). It could be called &#8220;foobar=
&#8221; if it is
 not for interest.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;">Regards.</span><span style=3D"font-size:1=
0.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p></o:p></=
span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Thomas<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
</div>
</body>
</html>

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From nobody Sun Aug  9 19:57:48 2015
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From: Ross Callon <rcallon@juniper.net>
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Thread-Topic: IPR poll on draft-mirsky-mpls-bfd-directed 
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From: Jeff Tantsura <jeff.tantsura@ericsson.com>
To: Ross Callon <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>, Gregory Mirsky <gregory.mirsky@ericsson.com>, "Ilya@nobulus.com" <Ilya@nobulus.com>, "mach.chen@huawei.com" <mach.chen@huawei.com>
Thread-Topic: IPR poll on draft-mirsky-mpls-bfd-directed 
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Date: Mon, 10 Aug 2015 06:32:40 +0000
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Subject: Re: [mpls] IPR poll on draft-mirsky-mpls-bfd-directed
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Ross,

I=B9m not aware of any IPR that relates to this draft other than disclosed
one.
Thanks!

Cheers,
Jeff




-----Original Message-----
From: Ross Callon <rcallon@juniper.net>
Date: Sunday, August 9, 2015 at 7:57 PM
To: "mpls@ietf.org" <mpls@ietf.org>, Gregory Mirsky
<gregory.mirsky@ericsson.com>, Jeff Tantsura <jeff.tantsura@ericsson.com>,
"Ilya@nobulus.com" <Ilya@nobulus.com>, "mach.chen@huawei.com"
<mach.chen@huawei.com>
Cc: "mpls-chairs@tools.ietf.org" <mpls-chairs@tools.ietf.org>
Subject: IPR poll on draft-mirsky-mpls-bfd-directed

>Working Group,
>
>The authors have told the WG chairs that draft-mirsky-mpls-bfd-directed
>is ready for consideration as a WG document. Before we start the call for
>adoption we will do an IPR poll.
>
>This mail starts the IPR poll.
>
>Are you aware of any IPR that applies to draft-mirsky-mpls-bfd-directed?
>
>If so, has this IPR been disclosed in compliance with IETF IPR rules (see
>RFCs 3979, 4879, 3669 and 5378 for more details)?
>
>There is currently one IPR disclosure filed against this document:
>https://datatracker.ietf.org/ipr/2625/
>
>If you are listed as a document author or contributor please respond to
>this email regardless of whether or not you are aware of any relevant
>IPR. *The response needs to be sent to the MPLS wg mailing list.* The
>document will not advance to the next stage until a response has been
>received from each author and contributor.
>
>If you are on the MPLS WG email list but are not listed as an author or
>contributor, then please explicitly respond only if you are aware of any
>IPR that has not yet been disclosed in conformance with IETF rules.
>
>Ross
>(as mpls wg co-chair)
>


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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: Ross Callon <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>, "Jeff Tantsura" <jeff.tantsura@ericsson.com>, "Ilya@nobulus.com" <Ilya@nobulus.com>, "mach.chen@huawei.com" <mach.chen@huawei.com>
Thread-Topic: IPR poll on draft-mirsky-mpls-bfd-directed 
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From nobody Mon Aug 10 12:38:50 2015
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From: Ronald Bonica <rbonica@juniper.net>
To: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Implementation poll on draft-ietf-mpls-self-ping
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Subject: Re: [mpls] Implementation poll on draft-ietf-mpls-self-ping
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From nobody Mon Aug 10 22:48:47 2015
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From: Balaji Rajagopalan <balajir@juniper.net>
To: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: [mpls] Correction - IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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Subject: Re: [mpls] Correction - IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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From nobody Tue Aug 11 04:53:21 2015
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Date: Tue, 11 Aug 2015 07:52:57 -0400
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Subject: [mpls] PALS WG Last Call for draft-ietf-pals-endpoint-fast-protection
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This is the PALS Working Group Last Call for draft-ietf-pals-endpoint-fast-
protection (formerly draft-ietf-pwe3-endpoint-fast-protection). You can
find the draft at:

https://tools.ietf.org/html/draft-ietf-pals-endpoint-fast-protection-00

This draft has already had a previous last call in the PWE3 WG. That last
call resulted in a number of comments and resulting improvements. As a
result, the document shepherd, Matthew Bocci, has recommended that we have
another last call for the PALS version.

Since this draft specifies some extensions to LDP (see Section 6), we are
copying this last call announcement to the MPLS WG as well. However, we
request that all last call comments be posted to the PALS WG list.

This last call will run for two weeks, ending on August 25.

Given the nature of the draft, we would appreciate even just responses that
you've read it and support publication, even if you don't have any specific
comments.

Thanks,
Andy and Stewart

--047d7b5d33ee6404a6051d07bf33
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<div dir=3D"ltr">This is the PALS Working Group Last Call for=C2=A0<span cl=
ass=3D"il" style=3D"font-size:13px">draft</span><span style=3D"font-size:13=
px">-</span><span class=3D"il" style=3D"font-size:13px">ietf</span><span st=
yle=3D"font-size:13px">-</span><span class=3D"il" style=3D"font-size:13px">=
pals</span><span style=3D"font-size:13px">-</span><span class=3D"il" style=
=3D"font-size:13px">endpoint</span><span style=3D"font-size:13px">-</span><=
span class=3D"il" style=3D"font-size:13px">fast</span><span style=3D"font-s=
ize:13px">-</span><span class=3D"il" style=3D"font-size:13px">protection</s=
pan><span style=3D"font-size:13px">=C2=A0(formerly=C2=A0</span><span class=
=3D"il" style=3D"font-size:13px">draft</span><span style=3D"font-size:13px"=
>-</span><span class=3D"il" style=3D"font-size:13px">ietf</span><span style=
=3D"font-size:13px">-pwe3-</span><span class=3D"il" style=3D"font-size:13px=
">endpoint</span><span style=3D"font-size:13px">-</span><span class=3D"il" =
style=3D"font-size:13px">fast</span><span style=3D"font-size:13px">-</span>=
<span class=3D"il" style=3D"font-size:13px">protection</span><span style=3D=
"font-size:13px">). You can find the draft at:</span><div><span style=3D"fo=
nt-size:13px"><br></span></div><div><a href=3D"https://tools.ietf.org/html/=
draft-ietf-pals-endpoint-fast-protection-00">https://tools.ietf.org/html/dr=
aft-ietf-pals-endpoint-fast-protection-00</a><br></div><div><br></div><div>=
This draft has already had a previous last call in the PWE3 WG. That last c=
all resulted in a number of comments and resulting improvements. As a resul=
t, the document shepherd, Matthew Bocci, has recommended that we have anoth=
er last call for the PALS version.</div><div><br></div><div>Since this draf=
t specifies some extensions to LDP (see Section 6), we are copying this las=
t call announcement to the MPLS WG as well. However, we request that all la=
st call comments be posted to the PALS WG list.</div><div><br></div><div>Th=
is last call will run for two weeks, ending on August 25.</div><div><br></d=
iv><div>Given the nature of the draft, we would appreciate even just respon=
ses that you&#39;ve read it and support publication, even if you don&#39;t =
have any specific comments.</div><div><br></div><div>Thanks,</div><div>Andy=
 and Stewart</div><div><br></div></div>

--047d7b5d33ee6404a6051d07bf33--


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From: iLya Varlashkin <ilya@nobulus.com>
In-Reply-To: <7347100B5761DC41A166AC17F22DF11221891B67@eusaamb103.ericsson.se>
Date: Tue, 11 Aug 2015 17:20:24 +0100
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To: Ross Callon <rcallon@juniper.net>
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Subject: Re: [mpls] IPR poll on draft-mirsky-mpls-bfd-directed
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Hi Ross,

I'm not aware of any IPR associated with this draft other than already =
mentioned in these thread.

Kind regards,
iLya

> On 10 Aug 2015, at 07:36, Gregory Mirsky <gregory.mirsky@ericsson.com> =
wrote:
>=20
> Hi Ross,
> I'm not aware of any IPR related to this draft other the one disclosed =
in https://datatracker.ietf.org/ipr/2625/ .
>=20
> 	Regards,
> 		Greg
>=20
> -----Original Message-----
> From: Ross Callon [mailto:rcallon@juniper.net]=20
> Sent: Sunday, August 09, 2015 7:58 PM
> To: mpls@ietf.org; Gregory Mirsky; Jeff Tantsura; Ilya@nobulus.com; =
mach.chen@huawei.com
> Cc: mpls-chairs@tools.ietf.org
> Subject: IPR poll on draft-mirsky-mpls-bfd-directed=20
>=20
> Working Group,
>=20
> The authors have told the WG chairs that =
draft-mirsky-mpls-bfd-directed is ready for consideration as a WG =
document. Before we start the call for adoption we will do an IPR poll.
>=20
> This mail starts the IPR poll.
>=20
> Are you aware of any IPR that applies to =
draft-mirsky-mpls-bfd-directed?
>=20
> If so, has this IPR been disclosed in compliance with IETF IPR rules =
(see RFCs 3979, 4879, 3669 and 5378 for more details)?
>=20
> There is currently one IPR disclosure filed against this document:
> https://datatracker.ietf.org/ipr/2625/
>=20
> If you are listed as a document author or contributor please respond =
to this email regardless of whether or not you are aware of any relevant =
IPR. *The response needs to be sent to the MPLS wg mailing list.* The =
document will not advance to the next stage until a response has been =
received from each author and contributor.
>=20
> If you are on the MPLS WG email list but are not listed as an author =
or contributor, then please explicitly respond only if you are aware of =
any IPR that has not yet been disclosed in conformance with IETF rules.
>=20
> Ross
> (as mpls wg co-chair)
>=20


--Apple-Mail=_7D1AADCD-E941-4E19-82DD-AEDD9D6FE685
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">Hi Ross,<div class=3D""><br class=3D""></div><div =
class=3D""><span style=3D"color: rgb(34, 34, 34); font-family: arial, =
sans-serif; font-size: 12.8000001907349px; widows: 1; background-color: =
rgb(255, 255, 255);" class=3D"">I'm not aware of any IPR associated with =
this draft other than already mentioned in these =
thread.</span></div><div class=3D""><div style=3D"widows: 1;" =
class=3D""><font color=3D"#222222" face=3D"arial, sans-serif" size=3D"2" =
class=3D""><span style=3D"background-color: rgb(255, 255, 255);" =
class=3D""><br class=3D""></span></font></div><div style=3D"widows: 1;" =
class=3D""><font color=3D"#222222" face=3D"arial, sans-serif" size=3D"2" =
class=3D""><span style=3D"background-color: rgb(255, 255, 255);" =
class=3D"">Kind regards,</span></font></div><div style=3D"widows: 1;" =
class=3D""><font color=3D"#222222" face=3D"arial, sans-serif" size=3D"2" =
class=3D""><span style=3D"background-color: rgb(255, 255, 255);" =
class=3D"">iLya</span></font></div><div style=3D"widows: 1;" =
class=3D""><font color=3D"#222222" face=3D"arial, sans-serif" size=3D"2" =
class=3D""><span style=3D"background-color: rgb(255, 255, 255);" =
class=3D""><br class=3D""></span></font></div><div><blockquote =
type=3D"cite" class=3D""><div class=3D"">On 10 Aug 2015, at 07:36, =
Gregory Mirsky &lt;<a href=3D"mailto:gregory.mirsky@ericsson.com" =
class=3D"">gregory.mirsky@ericsson.com</a>&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D"">Hi Ross,<br =
class=3D"">I'm not aware of any IPR related to this draft other the one =
disclosed in <a href=3D"https://datatracker.ietf.org/ipr/2625/" =
class=3D"">https://datatracker.ietf.org/ipr/2625/</a> .<br class=3D""><br =
class=3D""><span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Regards,<br class=3D""><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>Greg<br class=3D""><br =
class=3D"">-----Original Message-----<br class=3D"">From: Ross Callon =
[<a href=3D"mailto:rcallon@juniper.net" =
class=3D"">mailto:rcallon@juniper.net</a>] <br class=3D"">Sent: Sunday, =
August 09, 2015 7:58 PM<br class=3D"">To: <a href=3D"mailto:mpls@ietf.org"=
 class=3D"">mpls@ietf.org</a>; Gregory Mirsky; Jeff Tantsura; <a =
href=3D"mailto:Ilya@nobulus.com" class=3D"">Ilya@nobulus.com</a>; <a =
href=3D"mailto:mach.chen@huawei.com" =
class=3D"">mach.chen@huawei.com</a><br class=3D"">Cc: <a =
href=3D"mailto:mpls-chairs@tools.ietf.org" =
class=3D"">mpls-chairs@tools.ietf.org</a><br class=3D"">Subject: IPR =
poll on draft-mirsky-mpls-bfd-directed <br class=3D""><br =
class=3D"">Working Group,<br class=3D""><br class=3D"">The authors have =
told the WG chairs that draft-mirsky-mpls-bfd-directed is ready for =
consideration as a WG document. Before we start the call for adoption we =
will do an IPR poll.<br class=3D""><br class=3D"">This mail starts the =
IPR poll.<br class=3D""><br class=3D"">Are you aware of any IPR that =
applies to draft-mirsky-mpls-bfd-directed?<br class=3D""><br class=3D"">If=
 so, has this IPR been disclosed in compliance with IETF IPR rules (see =
RFCs 3979, 4879, 3669 and 5378 for more details)?<br class=3D""><br =
class=3D"">There is currently one IPR disclosure filed against this =
document:<br class=3D""><a href=3D"https://datatracker.ietf.org/ipr/2625/"=
 class=3D"">https://datatracker.ietf.org/ipr/2625/</a><br class=3D""><br =
class=3D"">If you are listed as a document author or contributor please =
respond to this email regardless of whether or not you are aware of any =
relevant IPR. *The response needs to be sent to the MPLS wg mailing =
list.* The document will not advance to the next stage until a response =
has been received from each author and contributor.<br class=3D""><br =
class=3D"">If you are on the MPLS WG email list but are not listed as an =
author or contributor, then please explicitly respond only if you are =
aware of any IPR that has not yet been disclosed in conformance with =
IETF rules.<br class=3D""><br class=3D"">Ross<br class=3D"">(as mpls wg =
co-chair)<br class=3D""><br class=3D""></div></blockquote></div><br =
class=3D""></div></body></html>=

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From: Ross Callon <rcallon@juniper.net>
To: "mpls@ietf.org" <mpls@ietf.org>
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Subject: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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This is to start a two week poll on adopting draft-mirsky-mpls-bfd-directed=
-04
as an MPLS working group document.

Please send your comments (support/not support) to the mpls working group
mailing list (mpls@ietf.org<mailto:mpls@ietf.org>).

This poll for adoption will end Friday August 28, 2015.

Thanks, Ross


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<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to start a two week poll on ado=
pting draft-mirsky-mpls-bfd-directed-04<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">as an MPLS working group document.<o:p>=
</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments (support/not =
support) to the mpls working group
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">mailing list (<a href=3D"mailto:mpls@ie=
tf.org"><span style=3D"color:windowtext">mpls@ietf.org</span></a>).<o:p></o=
:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This poll for adoption will end Friday =
August 28, 2015.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Thanks, Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
</div>
</body>
</html>

--_000_BY1PR0501MB1430989ECCFAF660B8962FF2A57D0BY1PR0501MB1430_--


From nobody Thu Aug 13 12:25:16 2015
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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: Ross Callon <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Poll for Adoption draft-mirsky-mpls-bfd-directed-04
Thread-Index: AQHQ1f2UP7BT441Ds0KKfcW4mT96/Z4KT2UQ
Date: Thu, 13 Aug 2015 19:24:57 +0000
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Cc: "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>
Subject: Re: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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--_000_7347100B5761DC41A166AC17F22DF11221895F2Deusaamb103erics_
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yes/support as co-author.

                Regards,
                                Greg

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: Thursday, August 13, 2015 12:24 PM
To: mpls@ietf.org
Cc: mpls-chairs@ietf.org
Subject: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04

This is to start a two week poll on adopting draft-mirsky-mpls-bfd-directed=
-04
as an MPLS working group document.

Please send your comments (support/not support) to the mpls working group
mailing list (mpls@ietf.org<mailto:mpls@ietf.org>).

This poll for adoption will end Friday August 28, 2015.

Thanks, Ross


--_000_7347100B5761DC41A166AC17F22DF11221895F2Deusaamb103erics_
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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">yes/support as co-author.=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; Greg<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> mpls [ma=
ilto:mpls-bounces@ietf.org]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> Thursday, August 13, 2015 12:24 PM<br>
<b>To:</b> mpls@ietf.org<br>
<b>Cc:</b> mpls-chairs@ietf.org<br>
<b>Subject:</b> [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04<=
o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to start a two week poll on ado=
pting draft-mirsky-mpls-bfd-directed-04<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">as an MPLS working group document.<o:p>=
</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments (support/not =
support) to the mpls working group
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">mailing list (<a href=3D"mailto:mpls@ie=
tf.org"><span style=3D"color:windowtext">mpls@ietf.org</span></a>).<o:p></o=
:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This poll for adoption will end Friday =
August 28, 2015.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Thanks, Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
</div>
</body>
</html>

--_000_7347100B5761DC41A166AC17F22DF11221895F2Deusaamb103erics_--


From nobody Thu Aug 13 12:52:13 2015
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Cc: mpls@ietf.org
Subject: [mpls] Last Call: <draft-ietf-mpls-tp-oam-id-mib-08.txt> (MPLS-TP Operations, Administration, and Management (OAM) Identifiers Management Information Base (MIB)) to Proposed Standard
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The IESG has received a request from the Multiprotocol Label Switching WG
(mpls) to consider the following document:
- 'MPLS-TP Operations, Administration, and Management (OAM) Identifiers
   Management Information Base (MIB)'
  <draft-ietf-mpls-tp-oam-id-mib-08.txt> as Proposed Standard

The IESG plans to make a decision in the next few weeks, and solicits
final comments on this action. Please send substantive comments to the
ietf@ietf.org mailing lists by 2015-08-27. 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


   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes Operations, Administration, and
   Management (OAM) identifiers related managed objects for
   Multiprotocol Label Switching (MPLS) and MPLS based Transport Profile
   (TP).




The file can be obtained via
https://datatracker.ietf.org/doc/draft-ietf-mpls-tp-oam-id-mib/

IESG discussion can be tracked via
https://datatracker.ietf.org/doc/draft-ietf-mpls-tp-oam-id-mib/ballot/


No IPR declarations have been submitted directly on this I-D.



From nobody Thu Aug 13 22:37:25 2015
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Subject: [mpls] I-D Action: draft-cheng-mpls-tp-shared-ring-protection-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 Multiprotocol Label Switching Working Group of the IETF.

        Title           : MPLS-TP Shared-Ring protection (MSRP) mechanism for ring topology
        Authors         : Weiqiang Cheng
                          Lei Wang
                          Han Li
                          Huub van Helvoort
                          Kai Liu
                          Jie Dong
                          Jia He
                          Fang Li
                          Jian Yang
                          Junfang Wang
	Filename        : draft-cheng-mpls-tp-shared-ring-protection-06.txt
	Pages           : 46
	Date            : 2015-08-13

Abstract:
   This document describes requirements, architecture and solutions for
   MPLS-TP Shared Ring Protection (MSRP) in the ring topology for point-
   to-point (P2P) services.  The mechanism of MSRP is illustrated and
   how it satisfies the requirements for optimized ring protection in
   RFC 5654 is analyzed.  This document also defines the Ring Protection
   Switch (RPS) Protocol which is used to coordinate the protection
   behavior of the nodes on MPLS ring.



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protection/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-cheng-mpls-tp-shared-ring-protection-06

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-cheng-mpls-tp-shared-ring-protection-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: "Adrian Farrel" <adrian@olddog.co.uk>
To: "'Ross Callon'" <rcallon@juniper.net>, <mpls@ietf.org>
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Cc: mpls-chairs@tools.ietf.org, draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org
Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Hi Ross,
 
Thanks for pursuing this to get proper review, and thanks to those who have
reviewed and commented.
 
In addition to their comments I have the following observations. I don't believe
any of them says "this is a bad idea, do not publish", but I think some polish
is needed on the draft.
 
Many thanks to the authors for their work,
Adrian
 
===
 
I think there are a few abbreviations that the RFC Editor will ask you to
expand. You might as well handle these at the same time as any update
resulting from last call.
 
I see...
Abstract
- LSP
Main text
- LSP
- NMS
- T-LDP
- RSVP-TE (curiously RSVP is allowed, so you can say "RSVP Traffic
  Engineering (RSVP-TE)"
- Tx and Rx (I think you might as well just write these in full)
 
---
 
Para 3 of the Intro has
> MPLS Transport Profile (MPLS-TP)
but this is not the first use of the abbreviation. Move it up to the 
first para?
 
Actually, maybe move the third paragraph to be the first para?
 
---
 
2.1.2 has
 
   To customize the configuration one would set the
   respective flags in the including the respective Loss and/or Delay
   sub-TLVs).
 
Doesn't parse.
 
...flags in the MPLS OAM Functions TLV and including...    ?
 
---
 
2.1.3
 
s/Corresponding Server MEP needs/The corresponding Server MEP needs/
 
---
 
2.2 needs to explain:
- The absence of the MPLS OAM Functions TLV is equivalent to the TLV
  being present with all bits set to zero
- If more than one MPLS OAM Functions TLV is present, what will the
  receiver do? Options are:
  - Process the first and ignore subsequent instances
  - Reject the message
  - Crash
- What happens if a bit that is unknown is set?
 
Are you sure you don't want IANA to track the MPLS OAM Functions Flags?
This is different from the flags fields in the sub-TLVs that are
specific to particular OAM tools because in this case new OAM mechanisms
may show up requesting configuration.
 
You have...
 
   Length: the length of the MPLS OAM Function Flags field including the
   total length of the sub-TLVs in octets.
 
   MPLS OAM Function Flags: a bitmap numbered from left to right as
   shown in the figure.
 
Of course, the figure doesn't show an "MPLS OAM Function Flags" field.
This could be resolved by fixing the figure where the individual bits
don't need to be named, and by fixing the table to show MBZ for the
reserved bits.
 
Furthermore, it's a little unclear in 2.2 what the correlation is
between the bit flags and the sub-TLVs. 
 
- Can a TLV be present if the "corresponding" is clear?
- If the corresponding bit is set, must the sub-TLV be present?
- And, of course, there are fewer sub-TLVs than bits.
 
I think you need to tidy up by adding text.
 
This leaves 2.2 looking like...
 
2.2.  MPLS OAM Functions TLV
 
   The MPLS OAM Functions TLV presented in Figure 1 is carried as a TLV
   of the MPLS Echo Request/Reply messages [RFC4379].  If the TLV is
   absent is as though it were present with all bits clear (zero) and no
   sub-TLVs present.  If the TLV is present more than once the first
   instance MUST be processed and subsequent instances MUST be ignored.
 
   The MPLS OAM Functions TLV contains a number of flags indicating
   which OAM functions should be activated as well as OAM function
   specific sub-TLVs with configuration parameters for the particular
   function.
 
    0                   1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |  MPLS OAM Func. Type (TBA1)   |           Length              |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                  MPLS OAM Function Flags                      |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                                                               |
   ~                           sub-TLVs                            ~
   |                                                               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 
                  Figure 1: MPLS OAM Functions TLV format
 
 
   Type: indicates the MPLS OAM Functions TLV Section 4.
 
   Length: the length of the MPLS OAM Function Flags field including the
     total length of the sub-TLVs in octets, but excluding the length of
     the Type and Length fields of the MPLS OAM Functions TLV.
 
   MPLS OAM Function Flags: a bitmap numbered from left to right.  These
     flags are managed by IANA.  Those defined in this document as 
     presented in Table 1 in Section 4.  Undefined flags MUST be set to
     zero and unknown flags MUST be ignored.  The flags indicate what 
     OAM is being configured and direct the presence of sub-TLVs as set
     out below.
 
   Sub-TLVs corresponding to the different flags are as follows:
 
      - BFD Configuration sub-TLV MUST be included if either the CC, the
       CV or, both MPLS OAM Function flags are set in the MPLS OAM 
        Functions TLV.
 
      - Performance Monitoring sub-TLV MAY be present to carry any of 
        the following sub-TLVs.  In none of these sub-TLVs is present
        then the Performance Monitoring sub-TLV is not included (that 
        is, an empty Performance Monitoring sub-TLV is not used).
 
        - PM Loss sub-TLV MAY be included in the Performance Monitoring
          sub-TLV if the PM/Loss OAM Function flag is set.  If the PM 
          Loss sub-TLV is not included, default configuration values are
          used.  This sub-TLV MAY also be included if the Throughput
          Measurement OAM Function flag is set and there is the need to
          specify a measurement interval different from the default one.
          In fact throughput measurement makes use of the same tools as
          loss measurement which is why the same sub-TLV is used.  If 
          the PM/Loss OAM Function flag and the Throughput Measurement
          OAM Function flag are both set, only at most one instance of
          the PM Loss sub-TLV is used.
 
        - PM Delay sub-TLV MAY be included in the Performance Monitoring
          sub-TLV if the PM/Delay OAM Function flag is set.  If the PM
         Delay sub-TLV is not included, default configuration values
          are used.
 
      - FMS sub-TLV MAY be included if the FMS OAM Function flag is set.
        If the "FMS sub-TLV" is not included, default configuration 
        values are used.
 
   If any sub-TLV is present without the corresponding flag being set,    
   the sub-TLV SHOULD be ignored.  If any sub-TLV that is required
   according to the setting of the corresponding bit is absent or if
   there is any parsing error within nested sub-TLVs this SHOULD be
   treated as an encoding error as described in [RFC4379].
 
Then, in Section 4 you can add...
 
   IANA maintains the Multi-Protocol Label Switching (MPLS) Label
   Switched Paths (LSPs) Ping Parameters registry.  IANA is requested to
   create a new registry called the "MPLS OAM Functions Flags" registry
   and to populate it as follows.
 
   +------------+--------------------+---------------------------------+
   |    Bit     | MPLS OAM Function  | Description                     |
  |  Position  |        Flag        |                                 |
   +------------+--------------------+---------------------------------+
   |     0      |         C          | Continuity Check (CC)           |
   |     1      |         V          | Connectivity Verification (CV)  |
   |     2      |         F          | Fault Management Signal (FMS)   |
   |     3      |         L          | Performance Measurement/Loss    |
   |            |                    | (PM/Loss)                       |
   |     4      |         D          | Performance Measurement/Delay   |
   |            |                    | (PM/Delay)                      |
   |     5      |         T          | Throughput Measurement          |
  |    6-31    |                    | Unassigned (Must be zero)       |
   +------------+--------------------+---------------------------------+
 
                     Table 1: MPLS OAM Functions Flags
 
   New flags are to be assigned by IETF Review [RFC5226].
 
 
---
 
Are there any ordering implications for the sub-TLVs in section 2.2?
 
---
 
2.2.1
 
   Length: indicates the length of the Value field in octets (4).
 
Are you sure that the lengths of the sub-TLVs are not included?
 
---
 
2.2.1
 
   BFD Negotiation (N): If set timer negotiation/re-negotiation via BFD
   Control Messages is enabled, when cleared it is disabled.
 
It would be useful to add to read...
 
   BFD Negotiation (N): If set timer negotiation/re-negotiation via BFD
   Control Messages is enabled, when cleared it is disabled and timer
   configuration is achieved using Negotiation Timer Parameters sub-TLV
   as described in Section 2.2.3.
 
---
 
2.2.1
 
   Symmetric session (S): If set the BFD session MUST use symmetric
   timing values.
 
and
 
   Integrity (I): If set BFD Authentication MUST be enabled.
 
If clear is it MUST NOT, or MAY use the appropriate functions?
 
---
 
2.2.2
 
   Local Discriminator: A unique, nonzero discriminator value generated
   by the transmitting system and referring to itself, used to
   demultiplex multiple BFD sessions between the same pair of systems.
 
I presume this is "unique" in the context of the transmitting system.
The phrase "and referring to itself" is unclear. So it might read better
as...
 
   Local Discriminator: A nonzero discriminator value that is unique in 
   context of the transmitting system that generates it. It is used to
   demultiplex multiple BFD sessions between the same pair of systems.
 
---
 
2.2.3
 
Acceptable Min. Asynchronous intervals: Are the values zero disallowed?
 
---
 
2.2.4
 
   If BFD Authentication sub-TLV used for a BFD session in Up state then
   the Sender of the MPLS LSP Echo Request SHOULD ensure that old and
   new modes of authentication, i.e. combination of Auth.Type and Auth.
   Key ID, used to send and receive BFD control packets until the Sender
   can confirm that its peer had switched to the new authentication.
 
Under what circumstances would an implementation vary this SHOULD and
what would be the effect?
 
---
 
2.2.5
 
   The Traffic Class sub-TLV is carried as a sub-TLV of the "BFD
   Configuration sub-TLV" or "Fault Management Signal sub-TLV"
   Section 2.2.9 and is depicted in Figure 6.
 
This is ambiguous since "or" could be read to be exclusive. How about
using "and"?
 
---
 
2.2.5
 
   If TC sub-TLV is present, then the value of the TC field MUST be used
   as the value of the TC field of an MPLS label stack entry.
 
Maybe I am missing something, but I couldn't work out which LSE on which
packet you are referring to. And it isn't even clear whether you mean to
copy the value from the packet to this field, or from this field to the
packet.
 
Ditto the end of 2.2.9 which is a bit clearer but still not clear as to
which LSE is being talked about.
 
---
 
2.2.6
 
   If the MPLS OAM Functions TLV has either the L (Loss), D (Delay) or T
   (Throughput) flag set, the Performance Measurement sub-TLV MUST be
   present.
 
I think you mean...
 
   If the MPLS OAM Functions TLV has any of the L (Loss), D (Delay), and
   T (Throughput) flags set, the Performance Measurement sub-TLV MUST be
   present.
 
---
 
2.2.6
 
Shouldn't Figure 7 show the optional sub-TLVs, and shouldn't the Length
field include the lengths of those sub-TLVs?
 
---
 
2.2.9
 
   When both working and protection
   paths are configured, both LSPs SHOULD be configured with identical
   settings of the E flag, T flag, and the refresh timer.
 
This implies there are reasons (and mechanisms) to vary the 
configuration. You should explain them.
 
---
 
2.2.9
 
   Length: indicates the length of the Value field in octets (4).
 
Surely the length includes the sub-TLVs as well.
 
---
 
Section 6
 
You called out the attack I was thinking of. That is, by either changing
the signaled configuration, injecting configuration packets, or by being
an evil (or fat-fingered or misguided) sender of configuration, it is 
possible to degrade a node.
 
You need to say what the protection is.
 
This may be as simple as a node paying attention to its loading and
refusing new OAM configurations that would take it close to the edge.
But this approach creates an interesting new vector since, by loading
one set of LSPs I may be able to prevent you running OAM on another set.
 
---
 
Section 6
 
Additionally, shouldn't you talk about the configuration of security
mechanisms that exist for the OAM tools you are configuring?
 
From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: 03 August 2015 16:45
To: mpls@ietf.org
Cc: mpls-chairs@tools.ietf.org;
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org
Subject: [mpls] working group last call for
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
 
Working Group,
 
This is to initiate a two week working group last call on
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10. 
 
Please send your comments to the mpls wg mailing list ( <mailto:mpls@ietf.org>
mpls@ietf.org).
 
There are no IPR disclosures against this document. All the authors have stated
that they 
are not aware of any IPR that relates to this draft (two of the responses were
private to 
the WG chairs).
 
This working group last call ends Tuesday  August 18, 2015.  
 
The previous WGLC for this document failed due to a lack of response, even
though there were 
no objections. I will remind the working group that for a WGLC a lack of
response does not imply 
support; rather a lack of response implies either no opinion or a failure to
read the document. As 
with any WGLC, working group participants are requested to read the document and
comment, 
and if you feel that the document is ready for publication it is appropriate to
respond to any WGLC 
with a short and simple email indicating support. 
 
Ross
for the MPLS WG chairs
 
 

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<w:LsdException Locked=3D"false" Priority=3D"0" SemiHidden=3D"false" =
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Name=3D"heading 7"/>
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<w:LsdException Locked=3D"false" Priority=3D"39" Name=3D"toc 1"/>
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<w:LsdException Locked=3D"false" Priority=3D"39" Name=3D"toc 4"/>
<w:LsdException Locked=3D"false" Priority=3D"39" Name=3D"toc 5"/>
<w:LsdException Locked=3D"false" Priority=3D"39" Name=3D"toc 6"/>
<w:LsdException Locked=3D"false" Priority=3D"39" Name=3D"toc 7"/>
<w:LsdException Locked=3D"false" Priority=3D"39" Name=3D"toc 8"/>
<w:LsdException Locked=3D"false" Priority=3D"39" Name=3D"toc 9"/>
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UnhideWhenUsed=3D"false" Name=3D"Light Grid Accent 1"/>
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UnhideWhenUsed=3D"false" Name=3D"Medium Shading 1 Accent 1"/>
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UnhideWhenUsed=3D"false" Name=3D"Medium Shading 2 Accent 1"/>
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UnhideWhenUsed=3D"false" Name=3D"Medium List 1 Accent 1"/>
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<w:LsdException Locked=3D"false" Priority=3D"66" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium List 2 Accent 1"/>
<w:LsdException Locked=3D"false" Priority=3D"67" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Grid 1 Accent 1"/>
<w:LsdException Locked=3D"false" Priority=3D"68" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Grid 2 Accent 1"/>
<w:LsdException Locked=3D"false" Priority=3D"69" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Grid 3 Accent 1"/>
<w:LsdException Locked=3D"false" Priority=3D"70" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"71" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"72" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Colorful List Accent 1"/>
<w:LsdException Locked=3D"false" Priority=3D"73" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Colorful Grid Accent 1"/>
<w:LsdException Locked=3D"false" Priority=3D"60" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"61" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Light List Accent 2"/>
<w:LsdException Locked=3D"false" Priority=3D"62" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Light Grid Accent 2"/>
<w:LsdException Locked=3D"false" Priority=3D"63" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Shading 1 Accent 2"/>
<w:LsdException Locked=3D"false" Priority=3D"64" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Shading 2 Accent 2"/>
<w:LsdException Locked=3D"false" Priority=3D"65" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium List 1 Accent 2"/>
<w:LsdException Locked=3D"false" Priority=3D"66" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"67" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"68" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"69" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Grid 3 Accent 2"/>
<w:LsdException Locked=3D"false" Priority=3D"70" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"71" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Colorful Shading Accent 2"/>
<w:LsdException Locked=3D"false" Priority=3D"72" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Colorful List Accent 2"/>
<w:LsdException Locked=3D"false" Priority=3D"73" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Colorful Grid Accent 2"/>
<w:LsdException Locked=3D"false" Priority=3D"60" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Light Shading Accent 3"/>
<w:LsdException Locked=3D"false" Priority=3D"61" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Light List Accent 3"/>
<w:LsdException Locked=3D"false" Priority=3D"62" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Light Grid Accent 3"/>
<w:LsdException Locked=3D"false" Priority=3D"63" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"64" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Shading 2 Accent 3"/>
<w:LsdException Locked=3D"false" Priority=3D"65" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium List 1 Accent 3"/>
<w:LsdException Locked=3D"false" Priority=3D"66" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium List 2 Accent 3"/>
<w:LsdException Locked=3D"false" Priority=3D"67" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Grid 1 Accent 3"/>
<w:LsdException Locked=3D"false" Priority=3D"68" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"69" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Grid 3 Accent 3"/>
<w:LsdException Locked=3D"false" Priority=3D"70" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Dark List Accent 3"/>
<w:LsdException Locked=3D"false" Priority=3D"71" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Colorful Shading Accent 3"/>
<w:LsdException Locked=3D"false" Priority=3D"72" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Colorful List Accent 3"/>
<w:LsdException Locked=3D"false" Priority=3D"73" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Colorful Grid Accent 3"/>
<w:LsdException Locked=3D"false" Priority=3D"60" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Light Shading Accent 4"/>
<w:LsdException Locked=3D"false" Priority=3D"61" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Light List Accent 4"/>
<w:LsdException Locked=3D"false" Priority=3D"62" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Light Grid Accent 4"/>
<w:LsdException Locked=3D"false" Priority=3D"63" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Shading 1 Accent 4"/>
<w:LsdException Locked=3D"false" Priority=3D"64" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Shading 2 Accent 4"/>
<w:LsdException Locked=3D"false" Priority=3D"65" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium List 1 Accent 4"/>
<w:LsdException Locked=3D"false" Priority=3D"66" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium List 2 Accent 4"/>
<w:LsdException Locked=3D"false" Priority=3D"67" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Grid 1 Accent 4"/>
<w:LsdException Locked=3D"false" Priority=3D"68" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"69" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"70" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"71" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"73" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"60" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"61" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"62" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"63" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Shading 1 Accent 5"/>
<w:LsdException Locked=3D"false" Priority=3D"64" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"65" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium List 1 Accent 5"/>
<w:LsdException Locked=3D"false" Priority=3D"66" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"68" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"69" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"70" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"71" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"72" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Colorful List Accent 5"/>
<w:LsdException Locked=3D"false" Priority=3D"73" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Colorful Grid Accent 5"/>
<w:LsdException Locked=3D"false" Priority=3D"60" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Light Shading Accent 6"/>
<w:LsdException Locked=3D"false" Priority=3D"61" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"62" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Light Grid Accent 6"/>
<w:LsdException Locked=3D"false" Priority=3D"63" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Shading 1 Accent 6"/>
<w:LsdException Locked=3D"false" Priority=3D"64" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Shading 2 Accent 6"/>
<w:LsdException Locked=3D"false" Priority=3D"65" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium List 1 Accent 6"/>
<w:LsdException Locked=3D"false" Priority=3D"66" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium List 2 Accent 6"/>
<w:LsdException Locked=3D"false" Priority=3D"67" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Medium Grid 1 Accent 6"/>
<w:LsdException Locked=3D"false" Priority=3D"68" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"69" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"70" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"71" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Colorful Shading Accent 6"/>
<w:LsdException Locked=3D"false" Priority=3D"72" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"73" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" Name=3D"Colorful Grid Accent 6"/>
<w:LsdException Locked=3D"false" Priority=3D"19" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" QFormat=3D"true" Name=3D"Subtle Emphasis"/>
<w:LsdException Locked=3D"false" Priority=3D"21" SemiHidden=3D"false" =
UnhideWhenUsed=3D"false" QFormat=3D"true" Name=3D"Intense Emphasis"/>
<w:LsdException Locked=3D"false" Priority=3D"31" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"32" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"33" SemiHidden=3D"false" =
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<w:LsdException Locked=3D"false" Priority=3D"37" Name=3D"Bibliography"/>
<w:LsdException Locked=3D"false" Priority=3D"39" QFormat=3D"true" =
Name=3D"TOC Heading"/>
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<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
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<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DEN-GB link=3Dblue =
vlink=3Dpurple style=3D'tab-interval:36.0pt'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Hi =
Ross,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Thanks for pursuing this to =
get proper review, and thanks to those who have reviewed and =
commented.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>In addition to their comments =
I have the following observations. I don't believe any of them says =
&quot;this is a bad idea, do not publish&quot;, but I think some polish =
is needed on the draft.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Many thanks to the authors for =
their work,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Adrian<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New =
Roman";color:#1F497D'>=3D=3D=3D<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>I think there are a few =
abbreviations that the RFC Editor will ask you =
to<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>expand. You might as well =
handle these at the same time as any update<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>resulting from last =
call.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>I =
see...<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New =
Roman";color:#1F497D'>Abstract<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- LSP<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Main =
text<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- LSP<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- NMS<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- =
T-LDP<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- RSVP-TE (curiously RSVP is =
allowed, so you can say &quot;RSVP Traffic<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp; </span>Engineering =
(RSVP-TE)&quot;<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- Tx and Rx (I think you might =
as well just write these in full)<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Para 3 of the Intro =
has<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>&gt; MPLS Transport Profile =
(MPLS-TP)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>but this is not the first use =
of the abbreviation. Move it up to the <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>first =
para?<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Actually, maybe move the third =
paragraph to be the first para?<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.1.2 =
has<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>To customize the =
configuration one would set the<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>respective flags in the =
including the respective Loss and/or Delay<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>sub-TLVs).<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Doesn't =
parse.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>...flags in the MPLS OAM =
Functions TLV and including...<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; =
</span>?<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.1.3<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>s/Corresponding Server MEP =
needs/The corresponding Server MEP needs/<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2 needs to =
explain:<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- The absence of the MPLS OAM =
Functions TLV is equivalent to the TLV<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp; </span>being present with all bits set =
to zero<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- If more than one MPLS OAM =
Functions TLV is present, what will the<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp; </span>receiver do? Options =
are:<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp; </span>- Process the first and ignore =
subsequent instances<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp; </span>- Reject the =
message<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp; </span>- Crash<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- What happens if a bit that =
is unknown is set?<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Are you sure you don't want =
IANA to track the MPLS OAM Functions Flags?<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>This is different from the =
flags fields in the sub-TLVs that are<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>specific to particular OAM =
tools because in this case new OAM mechanisms<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>may show up requesting =
configuration.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>You =
have...<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Length: the length of the =
MPLS OAM Function Flags field including the<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>total length of the =
sub-TLVs in octets.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>MPLS OAM Function Flags: =
a bitmap numbered from left to right as<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>shown in the =
figure.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Of course, the figure doesn't =
show an &quot;MPLS OAM Function Flags&quot; =
field.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>This could be resolved by =
fixing the figure where the individual bits<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>don't need to be named, and by =
fixing the table to show MBZ for the<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>reserved =
bits.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Furthermore, it's a little =
unclear in 2.2 what the correlation is<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>between the bit flags and the =
sub-TLVs. <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- Can a TLV be present if the =
&quot;corresponding&quot; is clear?<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- If the corresponding bit is =
set, must the sub-TLV be present?<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>- And, of course, there are =
fewer sub-TLVs than bits.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>I think you need to tidy up by =
adding text.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>This leaves 2.2 looking =
like...<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>MPLS OAM Functions =
TLV<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>The MPLS OAM Functions =
TLV presented in Figure 1 is carried as a TLV<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>of the MPLS Echo =
Request/Reply messages [RFC4379].<span style=3D'mso-spacerun:yes'>&nbsp; =
</span>If the TLV is<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>absent is as though it =
were present with all bits clear (zero) and no<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>sub-TLVs present.<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>If the TLV is present more than =
once the first<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>instance MUST be =
processed and subsequent instances MUST be =
ignored.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>The MPLS OAM Functions =
TLV contains a number of flags indicating<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>which OAM functions =
should be activated as well as OAM function<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>specific sub-TLVs with =
configuration parameters for the particular<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>function.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>0<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>1<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>2<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>3<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>0 1 2 3 4 5 6 7 8 9 =
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<=
o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>MPLS OAM Func. Type (TBA1)<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp; </span>Length<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>|<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<=
o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>MPLS OAM =
Function Flags<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp; </span>|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<=
o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>|<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>~<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>sub-TLVs<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>~<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>|<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<=
o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>Figure =
1: MPLS OAM Functions TLV format<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Type: indicates the MPLS =
OAM Functions TLV Section 4.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Length: the length of the =
MPLS OAM Function Flags field including the<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>total length =
of the sub-TLVs in octets, but excluding the length =
of<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>the Type and =
Length fields of the MPLS OAM Functions TLV.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>MPLS OAM Function Flags: =
a bitmap numbered from left to right.<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>These<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>flags are =
managed by IANA.<span style=3D'mso-spacerun:yes'>&nbsp; </span>Those =
defined in this document as <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>presented=
 in Table 1 in Section 4.<span style=3D'mso-spacerun:yes'>&nbsp; =
</span>Undefined flags MUST be set to<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>zero and =
unknown flags MUST be ignored.<span style=3D'mso-spacerun:yes'>&nbsp; =
</span>The flags indicate what <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>OAM is =
being configured and direct the presence of sub-TLVs as =
set<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>out =
below.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Sub-TLVs corresponding to =
the different flags are as follows:<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>- BFD =
Configuration sub-TLV MUST be included if either the CC, =
the<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'> <span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</sp=
an>CV or, both MPLS OAM Function flags are set in the MPLS OAM =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;</span>Functions TLV.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>- =
Performance Monitoring sub-TLV MAY be present to carry any of =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;</span>the following sub-TLVs.<span style=3D'mso-spacerun:yes'>&nbsp; =
</span>In none of these sub-TLVs is present<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>then the Performance Monitoring sub-TLV is not included (that =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;</span>is, an empty Performance Monitoring sub-TLV is not =
used).<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>- PM Loss sub-TLV MAY be included in the Performance =
Monitoring<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>sub-TLV if the PM/Loss OAM Function flag is set.<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>If the PM =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;</span>Loss sub-TLV is not included, default configuration =
values are<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>used.<span style=3D'mso-spacerun:yes'>&nbsp; </span>This =
sub-TLV MAY also be included if the Throughput<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>Measurement OAM Function flag is set and there is the =
need to<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>specify a measurement interval different from the =
default one.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>In fact throughput measurement makes use of the same =
tools as<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>loss measurement which is why the same sub-TLV is =
used.<span style=3D'mso-spacerun:yes'>&nbsp; </span>If =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;</span>the PM/Loss OAM Function flag and the Throughput =
Measurement<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>OAM Function flag are both set, only at most one =
instance of<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>the PM Loss sub-TLV is used.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>- PM Delay sub-TLV MAY be included in the Performance =
Monitoring<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>sub-TLV if the PM/Delay OAM Function flag is set.<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>If the =
PM<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'> <span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;</span>Delay sub-TLV is not included, default configuration =
values<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>are used.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>- FMS =
sub-TLV MAY be included if the FMS OAM Function flag is =
set.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>If the &quot;FMS sub-TLV&quot; is not included, default =
configuration <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;</span>values are used.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>If any sub-TLV is present =
without the corresponding flag being set,<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; =
</span><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;</span>the sub-TLV SHOULD =
be ignored.<span style=3D'mso-spacerun:yes'>&nbsp; </span>If any sub-TLV =
that is required<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>according to the setting =
of the corresponding bit is absent or if<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>there is any parsing =
error within nested sub-TLVs this SHOULD be<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>treated as an encoding =
error as described in [RFC4379].<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Then, in Section 4 you can =
add...<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>IANA maintains the =
Multi-Protocol Label Switching (MPLS) Label<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Switched Paths (LSPs) =
Ping Parameters registry.<span style=3D'mso-spacerun:yes'>&nbsp; =
</span>IANA is requested to<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>create a new registry =
called the &quot;MPLS OAM Functions Flags&quot; =
registry<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>and to populate it as =
follows.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>+------------+--------------------+-------------------------------=
--+<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>Bit<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>| MPLS OAM =
Function<span style=3D'mso-spacerun:yes'>&nbsp; </span>| =
Description<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
; </span>|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'> <span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>|<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>Position<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>Flag<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
 </span>|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>+------------+--------------------+-------------------------------=
--+<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>0<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p; </span>C<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>| Continuity Check (CC)<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp; </span>|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>1<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p; </span>V<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>| Connectivity Verification (CV)<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>|<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>2<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p; </span>F<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>| Fault Management Signal (FMS)<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>3<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p; </span>L<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>| Performance Measurement/Loss<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; =
</span>|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>| (PM/Loss)<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp; </span>|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>4<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p; </span>D<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>| Performance Measurement/Delay<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>| (PM/Delay)<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp; </span>|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>5<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p; </span>T<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>| Throughput Measurement<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; </span>|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'> <span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>6-31<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>|<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>| Unassigned (Must be zero)<span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span>|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>+------------+--------------------+-------------------------------=
--+<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
; </span>Table 1: MPLS OAM Functions Flags<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>New flags are to be =
assigned by IETF Review [RFC5226].<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Are there any ordering =
implications for the sub-TLVs in section 2.2?<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.1<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Length: indicates the =
length of the Value field in octets (4).<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Are you sure that the lengths =
of the sub-TLVs are not included?<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.1<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>BFD Negotiation (N): If =
set timer negotiation/re-negotiation via BFD<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Control Messages is =
enabled, when cleared it is disabled.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>It would be useful to add to =
read...<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>BFD Negotiation (N): If =
set timer negotiation/re-negotiation via BFD<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Control Messages is =
enabled, when cleared it is disabled and timer<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>configuration is achieved =
using Negotiation Timer Parameters sub-TLV<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>as described in Section =
2.2.3.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.1<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Symmetric session (S): If =
set the BFD session MUST use symmetric<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>timing =
values.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>and<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Integrity (I): If set BFD =
Authentication MUST be enabled.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>If clear is it MUST NOT, or =
MAY use the appropriate functions?<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.2<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Local Discriminator: A =
unique, nonzero discriminator value generated<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>by the transmitting =
system and referring to itself, used to<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>demultiplex multiple BFD =
sessions between the same pair of systems.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>I presume this is =
&quot;unique&quot; in the context of the transmitting =
system.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>The phrase &quot;and referring =
to itself&quot; is unclear. So it might read =
better<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>as...<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Local Discriminator: A =
nonzero discriminator value that is unique in <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;</span>context of the =
transmitting system that generates it. It is used =
to<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>demultiplex multiple BFD =
sessions between the same pair of systems.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.3<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Acceptable Min. Asynchronous =
intervals: Are the values zero disallowed?<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.4<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>If BFD Authentication =
sub-TLV used for a BFD session in Up state then<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>the Sender of the MPLS =
LSP Echo Request SHOULD ensure that old and<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>new modes of =
authentication, i.e. combination of Auth.Type and =
Auth.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Key ID, used to send and =
receive BFD control packets until the Sender<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>can confirm that its peer =
had switched to the new authentication.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Under what circumstances would =
an implementation vary this SHOULD and<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>what would be the =
effect?<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.5<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>The Traffic Class sub-TLV =
is carried as a sub-TLV of the &quot;BFD<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Configuration =
sub-TLV&quot; or &quot;Fault Management Signal =
sub-TLV&quot;<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Section 2.2.9 and is =
depicted in Figure 6.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>This is ambiguous since =
&quot;or&quot; could be read to be exclusive. How =
about<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>using =
&quot;and&quot;?<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.5<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>If TC sub-TLV is present, =
then the value of the TC field MUST be used<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>as the value of the TC =
field of an MPLS label stack entry.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Maybe I am missing something, =
but I couldn't work out which LSE on which<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>packet you are referring to. =
And it isn't even clear whether you mean to<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>copy the value from the packet =
to this field, or from this field to the<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New =
Roman";color:#1F497D'>packet.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Ditto the end of 2.2.9 which =
is a bit clearer but still not clear as to<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>which LSE is being talked =
about.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.6<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>If the MPLS OAM Functions =
TLV has either the L (Loss), D (Delay) or T<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>(Throughput) flag set, =
the Performance Measurement sub-TLV MUST be<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>present.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>I think you =
mean...<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>If the MPLS OAM Functions =
TLV has any of the L (Loss), D (Delay), and<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>T (Throughput) flags set, =
the Performance Measurement sub-TLV MUST be<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; =
</span>present.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.6<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Shouldn't Figure 7 show the =
optional sub-TLVs, and shouldn't the Length<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>field include the lengths of =
those sub-TLVs?<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.9<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>When both working and =
protection<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>paths are configured, =
both LSPs SHOULD be configured with identical<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>settings of the E flag, T =
flag, and the refresh timer.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>This implies there are reasons =
(and mechanisms) to vary the <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>configuration. You should =
explain them.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>2.2.9<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><span =
style=3D'mso-spacerun:yes'>&nbsp;&nbsp; </span>Length: indicates the =
length of the Value field in octets (4).<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Surely the length includes the =
sub-TLVs as well.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Section =
6<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>You called out the attack I =
was thinking of. That is, by either changing<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>the signaled configuration, =
injecting configuration packets, or by being<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>an evil (or fat-fingered or =
misguided) sender of configuration, it is <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>possible to degrade a =
node.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>You need to say what the =
protection is.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>This may be as simple as a =
node paying attention to its loading and<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>refusing new OAM =
configurations that would take it close to the =
edge.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>But this approach creates an =
interesting new vector since, by loading<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>one set of LSPs I may be able =
to prevent you running OAM on another set.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>---<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Section =
6<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Additionally, shouldn't you =
talk about the configuration of security<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>mechanisms that exist for the =
OAM tools you are configuring?<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><div =
style=3D'border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt'><div><div style=3D'border:none;border-top:solid #B5C4DF =
1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-f=
ont-family:"Times New =
Roman";mso-ansi-language:EN-US'>From:</span></b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-f=
ont-family:"Times New Roman";mso-ansi-language:EN-US'> mpls =
[mailto:mpls-bounces@ietf.org] <b>On Behalf Of </b>Ross =
Callon<br><b>Sent:</b> 03 August 2015 16:45<br><b>To:</b> =
mpls@ietf.org<br><b>Cc:</b> mpls-chairs@tools.ietf.org; =
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org<br><b>Subject:</=
b> [mpls] working group last call for =
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10<o:p></o:p></span></p></div><=
/div><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>Working Group,<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>This is to initiate a two week working group last call on =
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10. =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'><o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>Please send your comments to the mpls wg mailing list (<a =
href=3D"mailto:mpls@ietf.org"><span =
style=3D'color:windowtext'>mpls@ietf.org</span></a>).<o:p></o:p></span></=
p></div><div><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>There are no IPR disclosures against this document. All the =
authors have stated that they <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>are not aware of any IPR that relates to this draft (two of =
the responses were private to <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>the WG chairs).<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>This working group last call ends Tuesday&nbsp; August 18, =
2015.&nbsp; <o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>&nbsp;<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>The previous WGLC for this document failed due to a lack of =
response, even though there were <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>no objections. I will remind the working group that for a =
WGLC a lack of response does not imply <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>support; rather a lack of response implies either no =
opinion or a failure to read the document. As <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>with any WGLC, working group participants are requested to =
read the document and comment, <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>and if you feel that the document is ready for publication =
it is appropriate to respond to any WGLC <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>with a short and simple email indicating support. =
<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'><o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>Ross<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>for the MPLS WG chairs<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ansi-lan=
guage:EN-US'>&nbsp;<o:p></o:p></span></p></div></div></div></body></html>
------=_NextPart_000_095F_01D0D6A2.3C48BBB0--


From nobody Fri Aug 14 07:22:37 2015
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From: Jeff Tantsura <jeff.tantsura@ericsson.com>
To: Ross Callon <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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Subject: Re: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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--_000_D1F347CAA275Bjefftantsuraericssoncom_
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Support as co-author

Cheers,
Jeff

From: Ross Callon <rcallon@juniper.net<mailto:rcallon@juniper.net>>
Date: Thursday, August 13, 2015 at 12:23 PM
To: "mpls@ietf.org<mailto:mpls@ietf.org>" <mpls@ietf.org<mailto:mpls@ietf.o=
rg>>
Cc: "mpls-chairs@ietf.org<mailto:mpls-chairs@ietf.org>" <mpls-chairs@ietf.o=
rg<mailto:mpls-chairs@ietf.org>>
Subject: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04

This is to start a two week poll on adopting draft-mirsky-mpls-bfd-directed=
-04
as an MPLS working group document.

Please send your comments (support/not support) to the mpls working group
mailing list (mpls@ietf.org<mailto:mpls@ietf.org>).

This poll for adoption will end Friday August 28, 2015.

Thanks, Ross


--_000_D1F347CAA275Bjefftantsuraericssoncom_
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e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>
<div>
<div>Support as co-author</div>
<div>
<div><span style=3D"font-family: Calibri; "><br>
</span></div>
<div><span style=3D"font-family: Calibri; ">Cheers,</span></div>
<div><font class=3D"Apple-style-span" color=3D"#000000"><font class=3D"Appl=
e-style-span" face=3D"Calibri">Jeff</font></font></div>
</div>
</div>
</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
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 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>Ross Callon &lt;<a href=3D"ma=
ilto:rcallon@juniper.net">rcallon@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Thursday, August 13, 2015 at =
12:23 PM<br>
<span style=3D"font-weight:bold">To: </span>&quot;<a href=3D"mailto:mpls@ie=
tf.org">mpls@ietf.org</a>&quot; &lt;<a href=3D"mailto:mpls@ietf.org">mpls@i=
etf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:mpls-ch=
airs@ietf.org">mpls-chairs@ietf.org</a>&quot; &lt;<a href=3D"mailto:mpls-ch=
airs@ietf.org">mpls-chairs@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[mpls] Poll for Adoption d=
raft-mirsky-mpls-bfd-directed-04<br>
</div>
<div><br>
</div>
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<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">This is to start a two week poll on adopting draft-mirsky-mp=
ls-bfd-directed-04<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">as an MPLS working group document.<o:p></o:p></span></p>
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<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
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<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">Please send your comments (support/not support) to the mpls =
working group
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">mailing list (<a href=3D"mailto:mpls@ietf.org"><span style=
=3D"color:windowtext">mpls@ietf.org</span></a>).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
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</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
, sans-serif;">This poll for adoption will end Friday August 28, 2015.
<o:p></o:p></span></p>
</div>
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<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
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<p class=3D"MsoNormal"><span style=3D"font-size: 11pt; font-family: Calibri=
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</body>
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--_000_D1F347CAA275Bjefftantsuraericssoncom_--


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Subject: Re: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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Ross,

This is a very useful draft, I support its adoption.

Cheers,
Andy

On Thu, Aug 13, 2015 at 3:23 PM, Ross Callon <rcallon@juniper.net> wrote:

> This is to start a two week poll on adopting
> draft-mirsky-mpls-bfd-directed-04
>
> as an MPLS working group document.
>
>
>
> Please send your comments (support/not support) to the mpls working group
>
> mailing list (mpls@ietf.org).
>
>
>
> This poll for adoption will end Friday August 28, 2015.
>
>
>
> Thanks, Ross
>
>
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>
>

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<div dir=3D"ltr">Ross,<div><br></div><div>This is a very useful draft, I su=
pport its adoption.</div><div><br></div><div>Cheers,</div><div>Andy</div></=
div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Thu, Aug 1=
3, 2015 at 3:23 PM, Ross Callon <span dir=3D"ltr">&lt;<a href=3D"mailto:rca=
llon@juniper.net" target=3D"_blank">rcallon@juniper.net</a>&gt;</span> wrot=
e:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-l=
eft:1px #ccc solid;padding-left:1ex">





<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to start a two week poll on ado=
pting draft-mirsky-mpls-bfd-directed-04<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">as an MPLS working group document.<u></=
u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments (support/not =
support) to the mpls working group
<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">mailing list (<a href=3D"mailto:mpls@ie=
tf.org" target=3D"_blank"><span style=3D"color:windowtext">mpls@ietf.org</s=
pan></a>).<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This poll for adoption will end Friday =
August 28, 2015.
<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Thanks, Ross<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">=C2=A0<u></u><u></u></span></p>
</div>
</div>
</div>

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

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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: "adrian@olddog.co.uk" <adrian@olddog.co.uk>, 'Ross Callon' <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Hi Adrian,
thank you for your kind consideration, support of this work, the utmost tho=
rough review and invaluable comments.
I'll work on updating the document and will try to make new version availab=
le by next Friday to address all comments received in WGLC.

                Regards,
                                Greg

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Adrian Farrel
Sent: Friday, August 14, 2015 7:02 AM
To: 'Ross Callon'; mpls@ietf.org
Cc: mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@t=
ools.ietf.org
Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mp=
ls-tp-oam-conf-10

Hi Ross,

Thanks for pursuing this to get proper review, and thanks to those who have=
 reviewed and commented.

In addition to their comments I have the following observations. I don't be=
lieve any of them says "this is a bad idea, do not publish", but I think so=
me polish is needed on the draft.

Many thanks to the authors for their work,
Adrian

=3D=3D=3D

I think there are a few abbreviations that the RFC Editor will ask you to
expand. You might as well handle these at the same time as any update
resulting from last call.

I see...
Abstract
- LSP
Main text
- LSP
- NMS
- T-LDP
- RSVP-TE (curiously RSVP is allowed, so you can say "RSVP Traffic
  Engineering (RSVP-TE)"
- Tx and Rx (I think you might as well just write these in full)

---

Para 3 of the Intro has
> MPLS Transport Profile (MPLS-TP)
but this is not the first use of the abbreviation. Move it up to the
first para?

Actually, maybe move the third paragraph to be the first para?

---

2.1.2 has

   To customize the configuration one would set the
   respective flags in the including the respective Loss and/or Delay
   sub-TLVs).

Doesn't parse.

...flags in the MPLS OAM Functions TLV and including...    ?

---

2.1.3

s/Corresponding Server MEP needs/The corresponding Server MEP needs/

---

2.2 needs to explain:
- The absence of the MPLS OAM Functions TLV is equivalent to the TLV
  being present with all bits set to zero
- If more than one MPLS OAM Functions TLV is present, what will the
  receiver do? Options are:
  - Process the first and ignore subsequent instances
  - Reject the message
  - Crash
- What happens if a bit that is unknown is set?

Are you sure you don't want IANA to track the MPLS OAM Functions Flags?
This is different from the flags fields in the sub-TLVs that are
specific to particular OAM tools because in this case new OAM mechanisms
may show up requesting configuration.

You have...

   Length: the length of the MPLS OAM Function Flags field including the
   total length of the sub-TLVs in octets.

   MPLS OAM Function Flags: a bitmap numbered from left to right as
   shown in the figure.

Of course, the figure doesn't show an "MPLS OAM Function Flags" field.
This could be resolved by fixing the figure where the individual bits
don't need to be named, and by fixing the table to show MBZ for the
reserved bits.

Furthermore, it's a little unclear in 2.2 what the correlation is
between the bit flags and the sub-TLVs.

- Can a TLV be present if the "corresponding" is clear?
- If the corresponding bit is set, must the sub-TLV be present?
- And, of course, there are fewer sub-TLVs than bits.

I think you need to tidy up by adding text.

This leaves 2.2 looking like...

2.2.  MPLS OAM Functions TLV

   The MPLS OAM Functions TLV presented in Figure 1 is carried as a TLV
   of the MPLS Echo Request/Reply messages [RFC4379].  If the TLV is
   absent is as though it were present with all bits clear (zero) and no
   sub-TLVs present.  If the TLV is present more than once the first
   instance MUST be processed and subsequent instances MUST be ignored.

   The MPLS OAM Functions TLV contains a number of flags indicating
   which OAM functions should be activated as well as OAM function
   specific sub-TLVs with configuration parameters for the particular
   function.

    0                   1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |  MPLS OAM Func. Type (TBA1)   |           Length              |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                  MPLS OAM Function Flags                      |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                                                               |
   ~                           sub-TLVs                            ~
   |                                                               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

                  Figure 1: MPLS OAM Functions TLV format


   Type: indicates the MPLS OAM Functions TLV Section 4.

   Length: the length of the MPLS OAM Function Flags field including the
     total length of the sub-TLVs in octets, but excluding the length of
     the Type and Length fields of the MPLS OAM Functions TLV.

   MPLS OAM Function Flags: a bitmap numbered from left to right.  These
     flags are managed by IANA.  Those defined in this document as
     presented in Table 1 in Section 4.  Undefined flags MUST be set to
     zero and unknown flags MUST be ignored.  The flags indicate what
     OAM is being configured and direct the presence of sub-TLVs as set
     out below.

   Sub-TLVs corresponding to the different flags are as follows:

      - BFD Configuration sub-TLV MUST be included if either the CC, the
       CV or, both MPLS OAM Function flags are set in the MPLS OAM
        Functions TLV.

      - Performance Monitoring sub-TLV MAY be present to carry any of
        the following sub-TLVs.  In none of these sub-TLVs is present
        then the Performance Monitoring sub-TLV is not included (that
        is, an empty Performance Monitoring sub-TLV is not used).

        - PM Loss sub-TLV MAY be included in the Performance Monitoring
          sub-TLV if the PM/Loss OAM Function flag is set.  If the PM
          Loss sub-TLV is not included, default configuration values are
          used.  This sub-TLV MAY also be included if the Throughput
          Measurement OAM Function flag is set and there is the need to
          specify a measurement interval different from the default one.
          In fact throughput measurement makes use of the same tools as
          loss measurement which is why the same sub-TLV is used.  If
          the PM/Loss OAM Function flag and the Throughput Measurement
          OAM Function flag are both set, only at most one instance of
          the PM Loss sub-TLV is used.

        - PM Delay sub-TLV MAY be included in the Performance Monitoring
          sub-TLV if the PM/Delay OAM Function flag is set.  If the PM
         Delay sub-TLV is not included, default configuration values
          are used.

      - FMS sub-TLV MAY be included if the FMS OAM Function flag is set.
        If the "FMS sub-TLV" is not included, default configuration
        values are used.

   If any sub-TLV is present without the corresponding flag being set,
   the sub-TLV SHOULD be ignored.  If any sub-TLV that is required
   according to the setting of the corresponding bit is absent or if
   there is any parsing error within nested sub-TLVs this SHOULD be
   treated as an encoding error as described in [RFC4379].

Then, in Section 4 you can add...

   IANA maintains the Multi-Protocol Label Switching (MPLS) Label
   Switched Paths (LSPs) Ping Parameters registry.  IANA is requested to
   create a new registry called the "MPLS OAM Functions Flags" registry
   and to populate it as follows.

   +------------+--------------------+---------------------------------+
   |    Bit     | MPLS OAM Function  | Description                     |
  |  Position  |        Flag        |                                 |
   +------------+--------------------+---------------------------------+
   |     0      |         C          | Continuity Check (CC)           |
   |     1      |         V          | Connectivity Verification (CV)  |
   |     2      |         F          | Fault Management Signal (FMS)   |
   |     3      |         L          | Performance Measurement/Loss    |
   |            |                    | (PM/Loss)                       |
   |     4      |         D          | Performance Measurement/Delay   |
   |            |                    | (PM/Delay)                      |
   |     5      |         T          | Throughput Measurement          |
  |    6-31    |                    | Unassigned (Must be zero)       |
   +------------+--------------------+---------------------------------+

                     Table 1: MPLS OAM Functions Flags

   New flags are to be assigned by IETF Review [RFC5226].


---

Are there any ordering implications for the sub-TLVs in section 2.2?

---

2.2.1

   Length: indicates the length of the Value field in octets (4).

Are you sure that the lengths of the sub-TLVs are not included?

---

2.2.1

   BFD Negotiation (N): If set timer negotiation/re-negotiation via BFD
   Control Messages is enabled, when cleared it is disabled.

It would be useful to add to read...

   BFD Negotiation (N): If set timer negotiation/re-negotiation via BFD
   Control Messages is enabled, when cleared it is disabled and timer
   configuration is achieved using Negotiation Timer Parameters sub-TLV
   as described in Section 2.2.3.

---

2.2.1

   Symmetric session (S): If set the BFD session MUST use symmetric
   timing values.

and

   Integrity (I): If set BFD Authentication MUST be enabled.

If clear is it MUST NOT, or MAY use the appropriate functions?

---

2.2.2

   Local Discriminator: A unique, nonzero discriminator value generated
   by the transmitting system and referring to itself, used to
   demultiplex multiple BFD sessions between the same pair of systems.

I presume this is "unique" in the context of the transmitting system.
The phrase "and referring to itself" is unclear. So it might read better
as...

   Local Discriminator: A nonzero discriminator value that is unique in
   context of the transmitting system that generates it. It is used to
   demultiplex multiple BFD sessions between the same pair of systems.

---

2.2.3

Acceptable Min. Asynchronous intervals: Are the values zero disallowed?

---

2.2.4

   If BFD Authentication sub-TLV used for a BFD session in Up state then
   the Sender of the MPLS LSP Echo Request SHOULD ensure that old and
   new modes of authentication, i.e. combination of Auth.Type and Auth.
   Key ID, used to send and receive BFD control packets until the Sender
   can confirm that its peer had switched to the new authentication.

Under what circumstances would an implementation vary this SHOULD and
what would be the effect?

---

2.2.5

   The Traffic Class sub-TLV is carried as a sub-TLV of the "BFD
   Configuration sub-TLV" or "Fault Management Signal sub-TLV"
   Section 2.2.9 and is depicted in Figure 6.

This is ambiguous since "or" could be read to be exclusive. How about
using "and"?

---

2.2.5

   If TC sub-TLV is present, then the value of the TC field MUST be used
   as the value of the TC field of an MPLS label stack entry.

Maybe I am missing something, but I couldn't work out which LSE on which
packet you are referring to. And it isn't even clear whether you mean to
copy the value from the packet to this field, or from this field to the
packet.

Ditto the end of 2.2.9 which is a bit clearer but still not clear as to
which LSE is being talked about.

---

2.2.6

   If the MPLS OAM Functions TLV has either the L (Loss), D (Delay) or T
   (Throughput) flag set, the Performance Measurement sub-TLV MUST be
   present.

I think you mean...

   If the MPLS OAM Functions TLV has any of the L (Loss), D (Delay), and
   T (Throughput) flags set, the Performance Measurement sub-TLV MUST be
   present.

---

2.2.6

Shouldn't Figure 7 show the optional sub-TLVs, and shouldn't the Length
field include the lengths of those sub-TLVs?

---

2.2.9

   When both working and protection
   paths are configured, both LSPs SHOULD be configured with identical
   settings of the E flag, T flag, and the refresh timer.

This implies there are reasons (and mechanisms) to vary the
configuration. You should explain them.

---

2.2.9

   Length: indicates the length of the Value field in octets (4).

Surely the length includes the sub-TLVs as well.

---

Section 6

You called out the attack I was thinking of. That is, by either changing
the signaled configuration, injecting configuration packets, or by being
an evil (or fat-fingered or misguided) sender of configuration, it is
possible to degrade a node.

You need to say what the protection is.

This may be as simple as a node paying attention to its loading and
refusing new OAM configurations that would take it close to the edge.
But this approach creates an interesting new vector since, by loading
one set of LSPs I may be able to prevent you running OAM on another set.

---

Section 6

Additionally, shouldn't you talk about the configuration of security
mechanisms that exist for the OAM tools you are configuring?

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: 03 August 2015 16:45
To: mpls@ietf.org<mailto:mpls@ietf.org>
Cc: mpls-chairs@tools.ietf.org<mailto:mpls-chairs@tools.ietf.org>; draft-ie=
tf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org<mailto:draft-ietf-mpls-lsp=
-ping-mpls-tp-oam-conf@tools.ietf.org>
Subject: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-t=
p-oam-conf-10

Working Group,

This is to initiate a two week working group last call on draft-ietf-mpls-l=
sp-ping-mpls-tp-oam-conf-10.

Please send your comments to the mpls wg mailing list (mpls@ietf.org<mailto=
:mpls@ietf.org>).

There are no IPR disclosures against this document. All the authors have st=
ated that they
are not aware of any IPR that relates to this draft (two of the responses w=
ere private to
the WG chairs).

This working group last call ends Tuesday  August 18, 2015.

The previous WGLC for this document failed due to a lack of response, even =
though there were
no objections. I will remind the working group that for a WGLC a lack of re=
sponse does not imply
support; rather a lack of response implies either no opinion or a failure t=
o read the document. As
with any WGLC, working group participants are requested to read the documen=
t and comment,
and if you feel that the document is ready for publication it is appropriat=
e to respond to any WGLC
with a short and simple email indicating support.

Ross
for the MPLS WG chairs



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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi Adrian,<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">thank you for your kind c=
onsideration, support of this work, the utmost thorough review and invaluab=
le comments.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">I&#8217;ll work on updati=
ng the document and will try to make new version available by next Friday t=
o address all comments received in WGLC.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; Greg<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> mpls [ma=
ilto:mpls-bounces@ietf.org]
<b>On Behalf Of </b>Adrian Farrel<br>
<b>Sent:</b> Friday, August 14, 2015 7:02 AM<br>
<b>To:</b> 'Ross Callon'; mpls@ietf.org<br>
<b>Cc:</b> mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam=
-conf@tools.ietf.org<br>
<b>Subject:</b> Re: [mpls] working group last call for draft-ietf-mpls-lsp-=
ping-mpls-tp-oam-conf-10<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi Ross,<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Thanks for=
 pursuing this to get proper review, and thanks to those who have reviewed =
and commented.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">In additio=
n to their comments I have the following observations. I don't believe any =
of them says &quot;this is a bad idea, do not publish&quot;, but I think
 some polish is needed on the draft.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Many thank=
s to the authors for their work,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Adrian<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">=3D=3D=3D<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I think th=
ere are a few abbreviations that the RFC Editor will ask you to<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">expand. Yo=
u might as well handle these at the same time as any update<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">resulting =
from last call.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I see...<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Abstract<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- LSP<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Main text<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- LSP<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- NMS<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- T-LDP<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- RSVP-TE =
(curiously RSVP is allowed, so you can say &quot;RSVP Traffic<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; Eng=
ineering (RSVP-TE)&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- Tx and R=
x (I think you might as well just write these in full)<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Para 3 of =
the Intro has<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&gt; MPLS =
Transport Profile (MPLS-TP)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">but this i=
s not the first use of the abbreviation. Move it up to the
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">first para=
?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Actually, =
maybe move the third paragraph to be the first para?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.1.2 has<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; To customize the configuration one would set the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; respective flags in the including the respective Loss and/or Delay<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; sub-TLVs).<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Doesn't pa=
rse.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">...flags i=
n the MPLS OAM Functions TLV and including...&nbsp;&nbsp;&nbsp; ?<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.1.3<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">s/Correspo=
nding Server MEP needs/The corresponding Server MEP needs/<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2 needs =
to explain:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- The abse=
nce of the MPLS OAM Functions TLV is equivalent to the TLV<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; bei=
ng present with all bits set to zero<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- If more =
than one MPLS OAM Functions TLV is present, what will the<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; rec=
eiver do? Options are:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; - P=
rocess the first and ignore subsequent instances<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; - R=
eject the message<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; - C=
rash<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- What hap=
pens if a bit that is unknown is set?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Are you su=
re you don't want IANA to track the MPLS OAM Functions Flags?<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">This is di=
fferent from the flags fields in the sub-TLVs that are<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">specific t=
o particular OAM tools because in this case new OAM mechanisms<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">may show u=
p requesting configuration.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">You have..=
.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Length: the length of the MPLS OAM Function Flags field including the<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; total length of the sub-TLVs in octets.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; MPLS OAM Function Flags: a bitmap numbered from left to right as<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; shown in the figure.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Of course,=
 the figure doesn't show an &quot;MPLS OAM Function Flags&quot; field.<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">This could=
 be resolved by fixing the figure where the individual bits<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">don't need=
 to be named, and by fixing the table to show MBZ for the<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">reserved b=
its.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Furthermor=
e, it's a little unclear in 2.2 what the correlation is<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">between th=
e bit flags and the sub-TLVs.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- Can a TL=
V be present if the &quot;corresponding&quot; is clear?<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- If the c=
orresponding bit is set, must the sub-TLV be present?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- And, of =
course, there are fewer sub-TLVs than bits.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I think yo=
u need to tidy up by adding text.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">This leave=
s 2.2 looking like...<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.&nbsp;=
 MPLS OAM Functions TLV<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; The MPLS OAM Functions TLV presented in Figure 1 is carried as a TLV<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; of the MPLS Echo Request/Reply messages [RFC4379].&nbsp; If the TLV is<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; absent is as though it were present with all bits clear (zero) and no<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; sub-TLVs present.&nbsp; If the TLV is present more than once the first<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; instance MUST be processed and subsequent instances MUST be ignored.<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; The MPLS OAM Functions TLV contains a number of flags indicating<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; which OAM functions should be activated as well as OAM function<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; specific sub-TLVs with configuration parameters for the particular<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; function.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp; 2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp; 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-=
&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#4=
3;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp; MPLS OAM Func. Type (TBA1)&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Length&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-=
&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#4=
3;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MPLS OAM Function Flags&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-=
&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#4=
3;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; ~&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp; sub-TLVs&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ~<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-=
&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#4=
3;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp; Figure 1: MPLS OAM Functions TLV format<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Type: indicates the MPLS OAM Functions TLV Section 4.<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Length: the length of the MPLS OAM Function Flags field including the<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp; total length of the sub-TLVs in octets, but excluding the le=
ngth of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp; the Type and Length fields of the MPLS OAM Functions TLV.<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; MPLS OAM Function Flags: a bitmap numbered from left to right.&nbsp; The=
se<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp; flags are managed by IANA.&nbsp; Those defined in this docum=
ent as
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;presented in Table 1 in Section 4.&nbsp; Undefined flag=
s MUST be set to<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp; zero and unknown flags MUST be ignored.&nbsp; The flags indi=
cate what
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;OAM is being configured and direct the presence of sub-=
TLVs as set<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp; out below.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Sub-TLVs corresponding to the different flags are as follows:<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; - BFD Configuration sub-TLV MUST be included if either=
 the CC, the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp; CV or, both MPLS OAM Function flags are set in t=
he MPLS OAM
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Functions TLV.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; - Performance Monitoring sub-TLV MAY be present to car=
ry any of
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the following sub-TLVs.&nbsp; In none=
 of these sub-TLVs is present<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; then the Performance Monitoring sub-TLV is=
 not included (that
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;is, an empty Performance Monitoring s=
ub-TLV is not used).<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - PM Loss sub-TLV MAY be included in the P=
erformance Monitoring<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; sub-TLV if the PM/Loss OAM Fun=
ction flag is set.&nbsp; If the PM
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Loss sub-TLV is not inclu=
ded, default configuration values are<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; used.&nbsp; This sub-TLV MAY a=
lso be included if the Throughput<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Measurement OAM Function flag =
is set and there is the need to<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; specify a measurement interval=
 different from the default one.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; In fact throughput measurement=
 makes use of the same tools as<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; loss measurement which is why =
the same sub-TLV is used.&nbsp; If
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the PM/Loss OAM Function =
flag and the Throughput Measurement<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; OAM Function flag are both set=
, only at most one instance of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the PM Loss sub-TLV is used.<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - PM Delay sub-TLV MAY be included in the =
Performance Monitoring<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; sub-TLV if the PM/Delay OAM Fu=
nction flag is set.&nbsp; If the PM<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Delay sub-TLV is not included, defau=
lt configuration values<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; are used.<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; - FMS sub-TLV MAY be included if the FMS OAM Function =
flag is set.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; If the &quot;FMS sub-TLV&quot; is not incl=
uded, default configuration
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;values are used.<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; If any sub-TLV is present without the corresponding flag being set,&nbsp=
;&nbsp;&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;the sub-TLV SHOULD be ignored.&nbsp; If any sub-TLV that is require=
d<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; according to the setting of the corresponding bit is absent or if<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; there is any parsing error within nested sub-TLVs this SHOULD be<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; treated as an encoding error as described in [RFC4379].<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Then, in S=
ection 4 you can add...<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; IANA maintains the Multi-Protocol Label Switching (MPLS) Label<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Switched Paths (LSPs) Ping Parameters registry.&nbsp; IANA is requested =
to<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; create a new registry called the &quot;MPLS OAM Functions Flags&quot; re=
gistry<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; and to populate it as follows.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;------------&#43;--------------------&#43;-------------------------=
--------&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp; Bit&nbsp;&nbsp;&nbsp;&nbsp; | MPLS OAM Function&nbsp=
; | Description&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; |&n=
bsp; Position&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Flag&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;------------&#43;--------------------&#43;-------------------------=
--------&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; | Continuity Check (CC)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; V&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; | Connectivity Verification (CV)&nbsp; |<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; 2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; | Fault Management Signal (FMS)&nbsp;&nbsp; |<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; 3&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;|&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; L&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; | Performance Measurement/Loss&nbsp;&nbsp;&nbsp; |<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | (PM/Loss)&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; 4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; | Performance Measurement/Delay&nbsp;&nbsp; |<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | (PM/Delay)&nbsp;&nbsp; &nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;|<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; 5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; T&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; | Throughput Measurement&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; |&n=
bsp;&nbsp;&nbsp; 6-31&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp; | Unassigned (Must be zero)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;------------&#43;--------------------&#43;-------------------------=
--------&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Table 1: MPLS OAM Functions Flags<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; New flags are to be assigned by IETF Review [RFC5226].<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Are there =
any ordering implications for the sub-TLVs in section 2.2?<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.1<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Length: indicates the length of the Value field in octets (4).<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Are you su=
re that the lengths of the sub-TLVs are not included?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.1<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; BFD Negotiation (N): If set timer negotiation/re-negotiation via BFD<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Control Messages is enabled, when cleared it is disabled.<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">It would b=
e useful to add to read...<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; BFD Negotiation (N): If set timer negotiation/re-negotiation via BFD<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Control Messages is enabled, when cleared it is disabled and timer<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; configuration is achieved using Negotiation Timer Parameters sub-TLV<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; as described in Section 2.2.3.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.1<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; &nb=
sp;Symmetric session (S): If set the BFD session MUST use symmetric<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; timing values.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">and<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Integrity (I): If set BFD Authentication MUST be enabled.<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">If clear i=
s it MUST NOT, or MAY use the appropriate functions?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.2<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Local Discriminator: A unique, nonzero discriminator value generated<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; by the transmitting system and referring to itself, used to<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; demultiplex multiple BFD sessions between the same pair of systems.<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I presume =
this is &quot;unique&quot; in the context of the transmitting system.<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">The phrase=
 &quot;and referring to itself&quot; is unclear. So it might read better<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">as...<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Local Discriminator: A nonzero discriminator value that is unique in
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;context of the transmitting system that generates it. It is used to=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; demultiplex multiple BFD sessions between the same pair of systems.<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.3<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Acceptable=
 Min. Asynchronous intervals: Are the values zero disallowed?<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.4<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; If BFD Authentication sub-TLV used for a BFD session in Up state then<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; the Sender of the MPLS LSP Echo Request SHOULD ensure that old and<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; new modes of authentication, i.e. combination of Auth.Type and Auth.<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Key ID, used to send and receive BFD control packets until the Sender<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; can confirm that its peer had switched to the new authentication.<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Under what=
 circumstances would an implementation vary this SHOULD and<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">what would=
 be the effect?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.5<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; The Traffic Class sub-TLV is carried as a sub-TLV of the &quot;BFD<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Configuration sub-TLV&quot; or &quot;Fault Management Signal sub-TLV&quo=
t;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Section 2.2.9 and is depicted in Figure 6.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">This is am=
biguous since &quot;or&quot; could be read to be exclusive. How about<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">using &quo=
t;and&quot;?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.5<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; If TC sub-TLV is present, then the value of the TC field MUST be used<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; as the value of the TC field of an MPLS label stack entry.<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Maybe I am=
 missing something, but I couldn't work out which LSE on which<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">packet you=
 are referring to. And it isn't even clear whether you mean to<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">copy the v=
alue from the packet to this field, or from this field to the<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">packet.<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Ditto the =
end of 2.2.9 which is a bit clearer but still not clear as to<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">which LSE =
is being talked about.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.6<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; If the MPLS OAM Functions TLV has either the L (Loss), D (Delay) or T<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; (Throughput) flag set, the Performance Measurement sub-TLV MUST be<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; present.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I think yo=
u mean...<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; If the MPLS OAM Functions TLV has any of the L (Loss), D (Delay), and<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; T (Throughput) flags set, the Performance Measurement sub-TLV MUST be<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; present.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.6<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Shouldn't =
Figure 7 show the optional sub-TLVs, and shouldn't the Length<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">field incl=
ude the lengths of those sub-TLVs?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.9<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; When both working and protection<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; paths are configured, both LSPs SHOULD be configured with identical<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; settings of the E flag, T flag, and the refresh timer.<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">This impli=
es there are reasons (and mechanisms) to vary the
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">configurat=
ion. You should explain them.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.9<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Length: indicates the length of the Value field in octets (4).<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Surely the=
 length includes the sub-TLVs as well.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Section 6<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">You called=
 out the attack I was thinking of. That is, by either changing<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">the signal=
ed configuration, injecting configuration packets, or by being<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">an evil (o=
r fat-fingered or misguided) sender of configuration, it is
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">possible t=
o degrade a node.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">You need t=
o say what the protection is.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">This may b=
e as simple as a node paying attention to its loading and<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">refusing n=
ew OAM configurations that would take it close to the edge.<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">But this a=
pproach creates an interesting new vector since, by loading<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">one set of=
 LSPs I may be able to prevent you running OAM on another set.<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Section 6<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Additional=
ly, shouldn't you talk about the configuration of security<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">mechanisms=
 that exist for the OAM tools you are configuring?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> mpls [<a=
 href=3D"mailto:mpls-bounces@ietf.org">mailto:mpls-bounces@ietf.org</a>]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> 03 August 2015 16:45<br>
<b>To:</b> <a href=3D"mailto:mpls@ietf.org">mpls@ietf.org</a><br>
<b>Cc:</b> <a href=3D"mailto:mpls-chairs@tools.ietf.org">mpls-chairs@tools.=
ietf.org</a>;
<a href=3D"mailto:draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org"=
>draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org</a><br>
<b>Subject:</b> [mpls] working group last call for draft-ietf-mpls-lsp-ping=
-mpls-tp-oam-conf-10<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p>&nbsp;</o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Working Group,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to initiate a two week working =
group last call on draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments to the mpls w=
g mailing list (<a href=3D"mailto:mpls@ietf.org"><span style=3D"color:windo=
wtext">mpls@ietf.org</span></a>).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">There are no IPR disclosures against th=
is document. All the authors have stated that they
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">are not aware of any IPR that relates t=
o this draft (two of the responses were private to
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">the WG chairs).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This working group last call ends Tuesd=
ay&nbsp; August 18, 2015.&nbsp;
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The previous WGLC for this document fai=
led due to a lack of response, even though there were
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">no objections. I will remind the workin=
g group that for a WGLC a lack of response does not imply
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">support; rather a lack of response impl=
ies either no opinion or a failure to read the document. As
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with any WGLC, working group participan=
ts are requested to read the document and comment,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">and if you feel that the document is re=
ady for publication it is appropriate to respond to any WGLC
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with a short and simple email indicatin=
g support.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">for the MPLS WG chairs<o:p></o:p></span=
></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
</div>
</div>
</body>
</html>

--_000_7347100B5761DC41A166AC17F22DF112218973FFeusaamb103erics_--


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References: <F73A3CB31E8BE34FA1BBE3C8F0CB2AE28B486F6B@SZXEMA510-MBX.china.huawei.com> <F73A3CB31E8BE34FA1BBE3C8F0CB2AE28B4B901E@SZXEMA510-MBX.china.huawei.com> <7347100B5761DC41A166AC17F22DF1122188F2A6@eusaamb103.ericsson.se>
Date: Sun, 16 Aug 2015 12:26:58 +0900
Message-ID: <CAFqGwGt4WcBggA0V6O7MSDpLL9cDc9r5undFGwRmc12fd1uiPQ@mail.gmail.com>
From: Nobo Akiya <nobo.akiya.dev@gmail.com>
To: Gregory Mirsky <gregory.mirsky@ericsson.com>
Content-Type: multipart/alternative; boundary=001a113462a4ebec70051d654181
Archived-At: <http://mailarchive.ietf.org/arch/msg/mpls/bzs_dNvozpiv7_z9O1BFXpmkvUI>
Cc: Ross Callon <rcallon@juniper.net>, mpls <mpls@ietf.org>, "draft-mirsky-mpls-bfd-directed@tools.ietf.org" <draft-mirsky-mpls-bfd-directed@tools.ietf.org>
Subject: Re: [mpls] Review of draft-mirsky-mpls-bfd-directed-03
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--001a113462a4ebec70051d654181
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Hi March, Greg,

My apologies for very delayed response.

Please see in-line with [NOBO].

Note I've snipped out sections that I accept your response.


> > Section 2
> >
> > o if reverse direction is in Down state, the head-end node would not
> >    receive indication of forward direction failure from its egress
> >    peer.
> >
> > [NOBO] I found above to be slightly unclear in 2 aspects.
> >
> > Since this section is describing the limitations of using BFD on an
> > unidirectional explicitly routed path, what does "if reverse direction
> is in Down state" mean?
> >
> > Additionally, "would not receive indication of forward direction
> > failure from its egress peer" is a bit cryptic. If the egress peer
> > detected that forward direction failed (e.g., BFD session timed out),
> > then the egress peer will send few BFD control packets with DOWN
> > state, IP routed. Thus the ingress peer will notice the problem of the
> forward direction.
> >
> > Readers can likely benefit from having this bullet point better
> clarified.
> >
>
> GIM=E2=89=AB Would the following wording be more deterministic:
>    o  failure detection on the reverse path cannot reliably be
>       interpreted as bi-directional failure and thus trigger, for
>       example, protection switchover of the forward direction;
>
>    o  if a failure of the reverse path being ignored, the ingress node
>       would not receive indication of forward direction failure from its
>       egress peer.
>
>

[NOBO] The second bullet may create more confusion. Can we keep just the
first bullet and add a bit of clarifications as below?

* a failure detection on the reverse path cannot reliably be
  interpreted as bi-directional failure and thus trigger, for
  example, protection switchover of the forward direction.
  When the BFD session on the egress node declares a failure
  (i.e., forward direction failure), the failure may or may not
  reach the ingress node. Therefore, the BFD session on the
  ingress node declaring failure may be a result of just the
  reverse path failure or both forward and reverse paths
  failures.

Regards,
Nobo

--001a113462a4ebec70051d654181
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi March, Greg,<div><br></div><div>My apologies for very d=
elayed response.</div><div><br></div><div>Please see in-line with [NOBO].</=
div><div><br></div><div>Note I&#39;ve snipped out sections that I accept yo=
ur response.</div><div><br><div class=3D"gmail_extra"><div class=3D"gmail_q=
uote"><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-l=
eft:1px #ccc solid;padding-left:1ex"><div><font face=3D"Calibri" size=3D"2"=
><span style=3D"font-size:11pt"><div><br></div><div><div class=3D"h5">
<div>&gt; Section 2</div>
<div>&gt; </div>
<div>&gt; o if reverse direction is in Down state, the head-end node would =
not</div>
<div>&gt; =C2=A0 =C2=A0receive indication of forward direction failure from=
 its egress</div>
<div>&gt; =C2=A0 =C2=A0peer.</div>
<div>&gt; </div>
<div>&gt; [NOBO] I found above to be slightly unclear in 2 aspects.</div>
<div>&gt; </div>
<div>&gt; Since this section is describing the limitations of using BFD on =
an </div>
<div>&gt; unidirectional explicitly routed path, what does &quot;if reverse=
 direction is in Down state&quot; mean?</div>
<div>&gt; </div>
<div>&gt; Additionally, &quot;would not receive indication of forward direc=
tion </div>
<div>&gt; failure from its egress peer&quot; is a bit cryptic. If the egres=
s peer </div>
<div>&gt; detected that forward direction failed (e.g., BFD session timed o=
ut), </div>
<div>&gt; then the egress peer will send few BFD control packets with DOWN =
</div>
<div>&gt; state, IP routed. Thus the ingress peer will notice the problem o=
f the forward direction.</div>
<div>&gt; </div>
<div>&gt; Readers can likely benefit from having this bullet point better c=
larified.</div>
<div>&gt; </div>
<div>=C2=A0</div>
</div></div><div>GIM<font face=3D"Cambria Math">=E2=89=AB</font> Would the =
following wording be more deterministic:</div>
<div>=C2=A0=C2=A0 o=C2=A0 failure detection on the reverse path cannot reli=
ably be</div>
<div>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 interpreted as bi-directional failure a=
nd thus trigger, for</div>
<div>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 example, protection switchover of the f=
orward direction;</div>
<div>=C2=A0</div>
<div>=C2=A0=C2=A0 o=C2=A0 if a failure of the reverse path being ignored, t=
he ingress node</div><span class=3D"">
<div>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 would not receive indication of forward=
 direction failure from its</div>
<div>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 egress peer.</div>
<div>=C2=A0</div></span></span></font></div></blockquote><div><br></div><di=
v>[NOBO] The second bullet may create more confusion. Can we keep just the =
first bullet and add a bit of clarifications as below?</div><div><br></div>=
<div>* a failure detection on the reverse path cannot reliably be</div><div=
>=C2=A0 interpreted as bi-directional failure and thus trigger, for</div><d=
iv>=C2=A0 example, protection switchover of the forward direction.</div><di=
v>=C2=A0 When the BFD session on the egress node declares a failure<br></di=
v><div>=C2=A0 (i.e., forward direction failure), the failure may or may not=
</div><div>=C2=A0 reach the ingress node. Therefore, the BFD session on the=
</div><div>=C2=A0 ingress node declaring failure may be a result of just th=
e</div><div>=C2=A0 reverse path failure or both forward and reverse paths</=
div><div>=C2=A0 failures.</div><div><br></div><div>Regards,</div><div>Nobo=
=C2=A0</div></div></div></div></div>

--001a113462a4ebec70051d654181--


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References: <55C22B0A.6000704@pi.nu> <55C31BF7.9040304@pi.nu>
Date: Sun, 16 Aug 2015 12:30:18 +0900
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From: Nobo Akiya <nobo.akiya.dev@gmail.com>
To: Loa Andersson <loa@pi.nu>
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Cc: "mpls@ietf.org" <mpls@ietf.org>, "mpls-chairs@tools.ietf.org" <mpls-chairs@tools.ietf.org>, "draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org" <draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org>
Subject: Re: [mpls] Correction - IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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--089e0158cb82da7b5f051d654dcd
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Hi Loa,

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

Regards,
Nobo

On Thu, Aug 6, 2015 at 5:33 PM, Loa Andersson <loa@pi.nu> wrote:

> Folks,
>
> One of the authors of the document has found an error with the text
> of the IPR Poll mail, thanks Nagendra! When you respond to the IPR poll
> please respond to this mail (nothing bad will happen if you respond
> to the original mail :) ).
>
> The correct text should be:
>
> Working Group,
>
> We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for
> working group adoption poll (can I use the abbreviation wgap?)
>
> We will start with the IPR poll and then MPLS-RT and the poll.
>
> This mail starts the IPR poll.
>
> Are you aware of any IPR that applies to draft-kumarkini-mpls-spring-
> lsp-ping?
>
> If so, has this IPR been disclosed in compliance with IETF IPR rules
> (see RFCs 3979, 4879, 3669 and 5378 for more details).
>
> There no IPR disclosures filed against this document.
>
> If you are listed as a document author or contributor please respond to
> this email regardless of whether or not you are aware of any relevant
> IPR. *The response needs to be sent to the MPLS wg mailing list.* The
> document will not advance to the next stage until a response has been
> received from each author and contributor.
>
> If you are on the MPLS WG email list but are not listed as an author or
> contributor, then please explicitly respond only if you are aware of any
> IPR that has not yet been disclosed in conformance with IETF rules.
>
>
> /Loa
> mpls wg co-chair
>
>

--089e0158cb82da7b5f051d654dcd
Content-Type: text/html; charset=UTF-8
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<div dir=3D"ltr">Hi Loa,<div><br></div><div><span style=3D"font-size:12.800=
0001907349px">I am not aware of any IPR applicable to this document.</span>=
<br></div><div><span style=3D"font-size:12.8000001907349px"><br></span></di=
v><div><span style=3D"font-size:12.8000001907349px">Regards,</span></div><d=
iv><span style=3D"font-size:12.8000001907349px">Nobo</span></div></div><div=
 class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Thu, Aug 6, 2015 a=
t 5:33 PM, Loa Andersson <span dir=3D"ltr">&lt;<a href=3D"mailto:loa@pi.nu"=
 target=3D"_blank">loa@pi.nu</a>&gt;</span> wrote:<br><blockquote class=3D"=
gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-=
left:1ex">Folks,<br>
<br>
One of the authors of the document has found an error with the text<br>
of the IPR Poll mail, thanks Nagendra! When you respond to the IPR poll<br>
please respond to this mail (nothing bad will happen if you respond<br>
to the original mail :) ).<br>
<br>
The correct text should be:<br>
<br>
Working Group,<br>
<br>
We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for<br>
working group adoption poll (can I use the abbreviation wgap?)<br>
<br>
We will start with the IPR poll and then MPLS-RT and the poll.<br>
<br>
This mail starts the IPR poll.<br>
<br>
Are you aware of any IPR that applies to draft-kumarkini-mpls-spring-<br>
lsp-ping?<br>
<br>
If so, has this IPR been disclosed in compliance with IETF IPR rules<br>
(see RFCs 3979, 4879, 3669 and 5378 for more details).<br>
<br>
There no IPR disclosures filed against this document.<br>
<br>
If you are listed as a document author or contributor please respond to<br>
this email regardless of whether or not you are aware of any relevant<br>
IPR. *The response needs to be sent to the MPLS wg mailing list.* The<br>
document will not advance to the next stage until a response has been<br>
received from each author and contributor.<br>
<br>
If you are on the MPLS WG email list but are not listed as an author or<br>
contributor, then please explicitly respond only if you are aware of any<br=
>
IPR that has not yet been disclosed in conformance with IETF rules.<br>
<br>
<br>
/Loa<br>
mpls wg co-chair<br>
<br>
</blockquote></div><br></div>

--089e0158cb82da7b5f051d654dcd--


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Date: Sun, 16 Aug 2015 12:38:56 +0900
Message-ID: <CAFqGwGtLzYfA3mNBwPiSGi3d6Q981_5ww2ju7DU8CDByJpbwDw@mail.gmail.com>
From: Nobo Akiya <nobo.akiya.dev@gmail.com>
To: "Andrew G. Malis" <agmalis@gmail.com>
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Cc: Ross Callon <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>
Subject: Re: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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--089e0112c59eba53bf051d656c2e
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Hi Ross,

I have read this document and I believe the extension is useful. Thus
support.

Regards,
Nobo

On Sat, Aug 15, 2015 at 4:21 AM, Andrew G. Malis <agmalis@gmail.com> wrote:

> Ross,
>
> This is a very useful draft, I support its adoption.
>
> Cheers,
> Andy
>
> On Thu, Aug 13, 2015 at 3:23 PM, Ross Callon <rcallon@juniper.net> wrote:
>
>> This is to start a two week poll on adopting
>> draft-mirsky-mpls-bfd-directed-04
>>
>> as an MPLS working group document.
>>
>>
>>
>> Please send your comments (support/not support) to the mpls working group
>>
>> mailing list (mpls@ietf.org).
>>
>>
>>
>> This poll for adoption will end Friday August 28, 2015.
>>
>>
>>
>> Thanks, Ross
>>
>>
>>
>> _______________________________________________
>> mpls mailing list
>> mpls@ietf.org
>> https://www.ietf.org/mailman/listinfo/mpls
>>
>>
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>
>

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<div dir=3D"ltr">Hi Ross,<div><br></div><div>I have read this document and =
I believe the extension is useful. Thus support.</div><div><br></div><div>R=
egards,</div><div>Nobo</div></div><div class=3D"gmail_extra"><br><div class=
=3D"gmail_quote">On Sat, Aug 15, 2015 at 4:21 AM, Andrew G. Malis <span dir=
=3D"ltr">&lt;<a href=3D"mailto:agmalis@gmail.com" target=3D"_blank">agmalis=
@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=
=3D"ltr">Ross,<div><br></div><div>This is a very useful draft, I support it=
s adoption.</div><div><br></div><div>Cheers,</div><div>Andy</div></div><div=
 class=3D"gmail_extra"><br><div class=3D"gmail_quote"><div><div class=3D"h5=
">On Thu, Aug 13, 2015 at 3:23 PM, Ross Callon <span dir=3D"ltr">&lt;<a hre=
f=3D"mailto:rcallon@juniper.net" target=3D"_blank">rcallon@juniper.net</a>&=
gt;</span> wrote:<br></div></div><blockquote class=3D"gmail_quote" style=3D=
"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div c=
lass=3D"h5">





<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to start a two week poll on ado=
pting draft-mirsky-mpls-bfd-directed-04<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">as an MPLS working group document.<u></=
u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments (support/not =
support) to the mpls working group
<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">mailing list (<a href=3D"mailto:mpls@ie=
tf.org" target=3D"_blank"><span style=3D"color:windowtext">mpls@ietf.org</s=
pan></a>).<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This poll for adoption will end Friday =
August 28, 2015.
<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Thanks, Ross<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">=C2=A0<u></u><u></u></span></p>
</div>
</div>
</div>

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

--089e0112c59eba53bf051d656c2e--


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References: <F73A3CB31E8BE34FA1BBE3C8F0CB2AE28B486F6B@SZXEMA510-MBX.china.huawei.com> <F73A3CB31E8BE34FA1BBE3C8F0CB2AE28B4B901E@SZXEMA510-MBX.china.huawei.com> <7347100B5761DC41A166AC17F22DF1122188F2A6@eusaamb103.ericsson.se> <CAFqGwGt4WcBggA0V6O7MSDpLL9cDc9r5undFGwRmc12fd1uiPQ@mail.gmail.com>
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From: Nobo Akiya <nobo.akiya.dev@gmail.com>
To: Gregory Mirsky <gregory.mirsky@ericsson.com>
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Cc: Ross Callon <rcallon@juniper.net>, mpls <mpls@ietf.org>, "draft-mirsky-mpls-bfd-directed@tools.ietf.org" <draft-mirsky-mpls-bfd-directed@tools.ietf.org>
Subject: Re: [mpls] Review of draft-mirsky-mpls-bfd-directed-03
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--089e0158cb825dcab4051d769977
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Hello Greg, Mach,

As I indicated in a separate email, one remaining comment is minor and I do
not believe it is a blocker before this document becoming adopted as a WG
document. If you can address it in the next revision after it becoming a WG
document, I'm happy.

Regards,
Nobo

On Sun, Aug 16, 2015 at 12:26 PM, Nobo Akiya <nobo.akiya.dev@gmail.com>
wrote:

> Hi March, Greg,
>
> My apologies for very delayed response.
>
> Please see in-line with [NOBO].
>
> Note I've snipped out sections that I accept your response.
>
>
>> > Section 2
>> >
>> > o if reverse direction is in Down state, the head-end node would not
>> >    receive indication of forward direction failure from its egress
>> >    peer.
>> >
>> > [NOBO] I found above to be slightly unclear in 2 aspects.
>> >
>> > Since this section is describing the limitations of using BFD on an
>> > unidirectional explicitly routed path, what does "if reverse direction
>> is in Down state" mean?
>> >
>> > Additionally, "would not receive indication of forward direction
>> > failure from its egress peer" is a bit cryptic. If the egress peer
>> > detected that forward direction failed (e.g., BFD session timed out),
>> > then the egress peer will send few BFD control packets with DOWN
>> > state, IP routed. Thus the ingress peer will notice the problem of the
>> forward direction.
>> >
>> > Readers can likely benefit from having this bullet point better
>> clarified.
>> >
>>
>> GIM=E2=89=AB Would the following wording be more deterministic:
>>    o  failure detection on the reverse path cannot reliably be
>>       interpreted as bi-directional failure and thus trigger, for
>>       example, protection switchover of the forward direction;
>>
>>    o  if a failure of the reverse path being ignored, the ingress node
>>       would not receive indication of forward direction failure from its
>>       egress peer.
>>
>>
>
> [NOBO] The second bullet may create more confusion. Can we keep just the
> first bullet and add a bit of clarifications as below?
>
> * a failure detection on the reverse path cannot reliably be
>   interpreted as bi-directional failure and thus trigger, for
>   example, protection switchover of the forward direction.
>   When the BFD session on the egress node declares a failure
>   (i.e., forward direction failure), the failure may or may not
>   reach the ingress node. Therefore, the BFD session on the
>   ingress node declaring failure may be a result of just the
>   reverse path failure or both forward and reverse paths
>   failures.
>
> Regards,
> Nobo
>

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<div dir=3D"ltr">Hello Greg, Mach,<div><br></div><div>As I indicated in a s=
eparate email, one remaining comment is minor and I do not believe it is a =
blocker before this document becoming adopted as a WG document. If you can =
address it in the next revision after it becoming a WG document, I&#39;m ha=
ppy.</div><div><br></div><div>Regards,</div><div>Nobo</div></div><div class=
=3D"gmail_extra"><br><div class=3D"gmail_quote">On Sun, Aug 16, 2015 at 12:=
26 PM, Nobo Akiya <span dir=3D"ltr">&lt;<a href=3D"mailto:nobo.akiya.dev@gm=
ail.com" target=3D"_blank">nobo.akiya.dev@gmail.com</a>&gt;</span> wrote:<b=
r><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:=
1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">Hi March, Greg,<div><br><=
/div><div>My apologies for very delayed response.</div><div><br></div><div>=
Please see in-line with [NOBO].</div><div><br></div><div>Note I&#39;ve snip=
ped out sections that I accept your response.</div><div><br><div class=3D"g=
mail_extra"><div class=3D"gmail_quote"><span class=3D""><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex"><div><font face=3D"Calibri" size=3D"2"><span style=3D"font-si=
ze:11pt"><div><br></div><div><div>
<div>&gt; Section 2</div>
<div>&gt; </div>
<div>&gt; o if reverse direction is in Down state, the head-end node would =
not</div>
<div>&gt; =C2=A0 =C2=A0receive indication of forward direction failure from=
 its egress</div>
<div>&gt; =C2=A0 =C2=A0peer.</div>
<div>&gt; </div>
<div>&gt; [NOBO] I found above to be slightly unclear in 2 aspects.</div>
<div>&gt; </div>
<div>&gt; Since this section is describing the limitations of using BFD on =
an </div>
<div>&gt; unidirectional explicitly routed path, what does &quot;if reverse=
 direction is in Down state&quot; mean?</div>
<div>&gt; </div>
<div>&gt; Additionally, &quot;would not receive indication of forward direc=
tion </div>
<div>&gt; failure from its egress peer&quot; is a bit cryptic. If the egres=
s peer </div>
<div>&gt; detected that forward direction failed (e.g., BFD session timed o=
ut), </div>
<div>&gt; then the egress peer will send few BFD control packets with DOWN =
</div>
<div>&gt; state, IP routed. Thus the ingress peer will notice the problem o=
f the forward direction.</div>
<div>&gt; </div>
<div>&gt; Readers can likely benefit from having this bullet point better c=
larified.</div>
<div>&gt; </div>
<div>=C2=A0</div>
</div></div><div>GIM<font face=3D"Cambria Math">=E2=89=AB</font> Would the =
following wording be more deterministic:</div>
<div>=C2=A0=C2=A0 o=C2=A0 failure detection on the reverse path cannot reli=
ably be</div>
<div>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 interpreted as bi-directional failure a=
nd thus trigger, for</div>
<div>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 example, protection switchover of the f=
orward direction;</div>
<div>=C2=A0</div>
<div>=C2=A0=C2=A0 o=C2=A0 if a failure of the reverse path being ignored, t=
he ingress node</div><span>
<div>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 would not receive indication of forward=
 direction failure from its</div>
<div>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 egress peer.</div>
<div>=C2=A0</div></span></span></font></div></blockquote><div><br></div></s=
pan><div>[NOBO] The second bullet may create more confusion. Can we keep ju=
st the first bullet and add a bit of clarifications as below?</div><div><br=
></div><div>* a failure detection on the reverse path cannot reliably be</d=
iv><span class=3D""><div>=C2=A0 interpreted as bi-directional failure and t=
hus trigger, for</div></span><div>=C2=A0 example, protection switchover of =
the forward direction.</div><div>=C2=A0 When the BFD session on the egress =
node declares a failure<br></div><div>=C2=A0 (i.e., forward direction failu=
re), the failure may or may not</div><div>=C2=A0 reach the ingress node. Th=
erefore, the BFD session on the</div><div>=C2=A0 ingress node declaring fai=
lure may be a result of just the</div><div>=C2=A0 reverse path failure or b=
oth forward and reverse paths</div><div>=C2=A0 failures.</div><div><br></di=
v><div>Regards,</div><div>Nobo=C2=A0</div></div></div></div></div>
</blockquote></div><br></div>

--089e0158cb825dcab4051d769977--


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Date: Mon, 17 Aug 2015 10:01:23 +0200
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Cc: "mpls-chairs@tools.ietf.org" <mpls-chairs@tools.ietf.org>, "draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org" <draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org>
Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Adrian and Greg,

I'm a co-author of this document and agree with Greg that this a very
good and most of it should be worked in the draft.

However - a detail - we have converged on tLDP as the abbreviation for
Targeted LDP, we should use that (not T-LDP).

/Loa

On 2015-08-14 23:01, Gregory Mirsky wrote:
> Hi Adrian,
>
> thank you for your kind consideration, support of this work, the utmost
> thorough review and invaluable comments.
>
> I’ll work on updating the document and will try to make new version
> available by next Friday to address all comments received in WGLC.
>
>                  Regards,
>
>                                  Greg
>
> *From:*mpls [mailto:mpls-bounces@ietf.org] *On Behalf Of *Adrian Farrel
> *Sent:* Friday, August 14, 2015 7:02 AM
> *To:* 'Ross Callon'; mpls@ietf.org
> *Cc:* mpls-chairs@tools.ietf.org;
> draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org
> *Subject:* Re: [mpls] working group last call for
> draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
>
> Hi Ross,
>
> Thanks for pursuing this to get proper review, and thanks to those who
> have reviewed and commented.
>
> In addition to their comments I have the following observations. I don't
> believe any of them says "this is a bad idea, do not publish", but I
> think some polish is needed on the draft.
>
> Many thanks to the authors for their work,
>
> Adrian
>
> ===
>
> I think there are a few abbreviations that the RFC Editor will ask you to
>
> expand. You might as well handle these at the same time as any update
>
> resulting from last call.
>
> I see...
>
> Abstract
>
> - LSP
>
> Main text
>
> - LSP
>
> - NMS
>
> - T-LDP
>
> - RSVP-TE (curiously RSVP is allowed, so you can say "RSVP Traffic
>
>    Engineering (RSVP-TE)"
>
> - Tx and Rx (I think you might as well just write these in full)
>
> ---
>
> Para 3 of the Intro has
>
>> MPLS Transport Profile (MPLS-TP)
>
> but this is not the first use of the abbreviation. Move it up to the
>
> first para?
>
> Actually, maybe move the third paragraph to be the first para?
>
> ---
>
> 2.1.2 has
>
>     To customize the configuration one would set the
>
>     respective flags in the including the respective Loss and/or Delay
>
>     sub-TLVs).
>
> Doesn't parse.
>
> ...flags in the MPLS OAM Functions TLV and including...    ?
>
> ---
>
> 2.1.3
>
> s/Corresponding Server MEP needs/The corresponding Server MEP needs/
>
> ---
>
> 2.2 needs to explain:
>
> - The absence of the MPLS OAM Functions TLV is equivalent to the TLV
>
>    being present with all bits set to zero
>
> - If more than one MPLS OAM Functions TLV is present, what will the
>
>    receiver do? Options are:
>
>    - Process the first and ignore subsequent instances
>
>    - Reject the message
>
>    - Crash
>
> - What happens if a bit that is unknown is set?
>
> Are you sure you don't want IANA to track the MPLS OAM Functions Flags?
>
> This is different from the flags fields in the sub-TLVs that are
>
> specific to particular OAM tools because in this case new OAM mechanisms
>
> may show up requesting configuration.
>
> You have...
>
>     Length: the length of the MPLS OAM Function Flags field including the
>
>     total length of the sub-TLVs in octets.
>
>     MPLS OAM Function Flags: a bitmap numbered from left to right as
>
>     shown in the figure.
>
> Of course, the figure doesn't show an "MPLS OAM Function Flags" field.
>
> This could be resolved by fixing the figure where the individual bits
>
> don't need to be named, and by fixing the table to show MBZ for the
>
> reserved bits.
>
> Furthermore, it's a little unclear in 2.2 what the correlation is
>
> between the bit flags and the sub-TLVs.
>
> - Can a TLV be present if the "corresponding" is clear?
>
> - If the corresponding bit is set, must the sub-TLV be present?
>
> - And, of course, there are fewer sub-TLVs than bits.
>
> I think you need to tidy up by adding text.
>
> This leaves 2.2 looking like...
>
> 2.2.  MPLS OAM Functions TLV
>
>     The MPLS OAM Functions TLV presented in Figure 1 is carried as a TLV
>
>     of the MPLS Echo Request/Reply messages [RFC4379].  If the TLV is
>
>     absent is as though it were present with all bits clear (zero) and no
>
>     sub-TLVs present.  If the TLV is present more than once the first
>
>     instance MUST be processed and subsequent instances MUST be ignored.
>
>     The MPLS OAM Functions TLV contains a number of flags indicating
>
>     which OAM functions should be activated as well as OAM function
>
>     specific sub-TLVs with configuration parameters for the particular
>
>     function.
>
>      0                   1                   2                   3
>
>      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>     |  MPLS OAM Func. Type (TBA1)   |           Length              |
>
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>     |                  MPLS OAM Function Flags                      |
>
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>     |                                                               |
>
>     ~                           sub-TLVs                            ~
>
>     |                                                               |
>
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>                    Figure 1: MPLS OAM Functions TLV format
>
>     Type: indicates the MPLS OAM Functions TLV Section 4.
>
>     Length: the length of the MPLS OAM Function Flags field including the
>
>       total length of the sub-TLVs in octets, but excluding the length of
>
>       the Type and Length fields of the MPLS OAM Functions TLV.
>
>     MPLS OAM Function Flags: a bitmap numbered from left to right.  These
>
>       flags are managed by IANA.  Those defined in this document as
>
>       presented in Table 1 in Section 4.  Undefined flags MUST be set to
>
>       zero and unknown flags MUST be ignored.  The flags indicate what
>
>       OAM is being configured and direct the presence of sub-TLVs as set
>
>       out below.
>
>     Sub-TLVs corresponding to the different flags are as follows:
>
>        - BFD Configuration sub-TLV MUST be included if either the CC, the
>
>         CV or, both MPLS OAM Function flags are set in the MPLS OAM
>
>          Functions TLV.
>
>        - Performance Monitoring sub-TLV MAY be present to carry any of
>
>          the following sub-TLVs.  In none of these sub-TLVs is present
>
>          then the Performance Monitoring sub-TLV is not included (that
>
>          is, an empty Performance Monitoring sub-TLV is not used).
>
>          - PM Loss sub-TLV MAY be included in the Performance Monitoring
>
>            sub-TLV if the PM/Loss OAM Function flag is set.  If the PM
>
>            Loss sub-TLV is not included, default configuration values are
>
>            used.  This sub-TLV MAY also be included if the Throughput
>
>            Measurement OAM Function flag is set and there is the need to
>
>            specify a measurement interval different from the default one.
>
>            In fact throughput measurement makes use of the same tools as
>
>            loss measurement which is why the same sub-TLV is used.  If
>
>            the PM/Loss OAM Function flag and the Throughput Measurement
>
>            OAM Function flag are both set, only at most one instance of
>
>            the PM Loss sub-TLV is used.
>
>          - PM Delay sub-TLV MAY be included in the Performance Monitoring
>
>            sub-TLV if the PM/Delay OAM Function flag is set.  If the PM
>
>           Delay sub-TLV is not included, default configuration values
>
>            are used.
>
>        - FMS sub-TLV MAY be included if the FMS OAM Function flag is set.
>
>          If the "FMS sub-TLV" is not included, default configuration
>
>          values are used.
>
>     If any sub-TLV is present without the corresponding flag being set,
>
>     the sub-TLV SHOULD be ignored.  If any sub-TLV that is required
>
>     according to the setting of the corresponding bit is absent or if
>
>     there is any parsing error within nested sub-TLVs this SHOULD be
>
>     treated as an encoding error as described in [RFC4379].
>
> Then, in Section 4 you can add...
>
>     IANA maintains the Multi-Protocol Label Switching (MPLS) Label
>
>     Switched Paths (LSPs) Ping Parameters registry.  IANA is requested to
>
>     create a new registry called the "MPLS OAM Functions Flags" registry
>
>     and to populate it as follows.
>
>     +------------+--------------------+---------------------------------+
>
>     |    Bit     | MPLS OAM Function  | Description                     |
>
>    |  Position  |        Flag        |                                 |
>
>     +------------+--------------------+---------------------------------+
>
>     |     0      |         C          | Continuity Check (CC)           |
>
>     |     1      |         V          | Connectivity Verification (CV)  |
>
>     |     2      |         F          | Fault Management Signal (FMS)   |
>
>     |     3      |         L          | Performance Measurement/Loss    |
>
>     |            |                    | (PM/Loss)                       |
>
>     |     4      |         D          | Performance Measurement/Delay   |
>
>     |            |                    | (PM/Delay)                      |
>
>     |     5      |         T          | Throughput Measurement          |
>
>    |    6-31    |                    | Unassigned (Must be zero)       |
>
>     +------------+--------------------+---------------------------------+
>
>                       Table 1: MPLS OAM Functions Flags
>
>     New flags are to be assigned by IETF Review [RFC5226].
>
> ---
>
> Are there any ordering implications for the sub-TLVs in section 2.2?
>
> ---
>
> 2.2.1
>
>     Length: indicates the length of the Value field in octets (4).
>
> Are you sure that the lengths of the sub-TLVs are not included?
>
> ---
>
> 2.2.1
>
>     BFD Negotiation (N): If set timer negotiation/re-negotiation via BFD
>
>     Control Messages is enabled, when cleared it is disabled.
>
> It would be useful to add to read...
>
>     BFD Negotiation (N): If set timer negotiation/re-negotiation via BFD
>
>     Control Messages is enabled, when cleared it is disabled and timer
>
>     configuration is achieved using Negotiation Timer Parameters sub-TLV
>
>     as described in Section 2.2.3.
>
> ---
>
> 2.2.1
>
>     Symmetric session (S): If set the BFD session MUST use symmetric
>
>     timing values.
>
> and
>
>     Integrity (I): If set BFD Authentication MUST be enabled.
>
> If clear is it MUST NOT, or MAY use the appropriate functions?
>
> ---
>
> 2.2.2
>
>     Local Discriminator: A unique, nonzero discriminator value generated
>
>     by the transmitting system and referring to itself, used to
>
>     demultiplex multiple BFD sessions between the same pair of systems.
>
> I presume this is "unique" in the context of the transmitting system.
>
> The phrase "and referring to itself" is unclear. So it might read better
>
> as...
>
>     Local Discriminator: A nonzero discriminator value that is unique in
>
>     context of the transmitting system that generates it. It is used to
>
>     demultiplex multiple BFD sessions between the same pair of systems.
>
> ---
>
> 2.2.3
>
> Acceptable Min. Asynchronous intervals: Are the values zero disallowed?
>
> ---
>
> 2.2.4
>
>     If BFD Authentication sub-TLV used for a BFD session in Up state then
>
>     the Sender of the MPLS LSP Echo Request SHOULD ensure that old and
>
>     new modes of authentication, i.e. combination of Auth.Type and Auth.
>
>     Key ID, used to send and receive BFD control packets until the Sender
>
>     can confirm that its peer had switched to the new authentication.
>
> Under what circumstances would an implementation vary this SHOULD and
>
> what would be the effect?
>
> ---
>
> 2.2.5
>
>     The Traffic Class sub-TLV is carried as a sub-TLV of the "BFD
>
>     Configuration sub-TLV" or "Fault Management Signal sub-TLV"
>
>     Section 2.2.9 and is depicted in Figure 6.
>
> This is ambiguous since "or" could be read to be exclusive. How about
>
> using "and"?
>
> ---
>
> 2.2.5
>
>     If TC sub-TLV is present, then the value of the TC field MUST be used
>
>     as the value of the TC field of an MPLS label stack entry.
>
> Maybe I am missing something, but I couldn't work out which LSE on which
>
> packet you are referring to. And it isn't even clear whether you mean to
>
> copy the value from the packet to this field, or from this field to the
>
> packet.
>
> Ditto the end of 2.2.9 which is a bit clearer but still not clear as to
>
> which LSE is being talked about.
>
> ---
>
> 2.2.6
>
>     If the MPLS OAM Functions TLV has either the L (Loss), D (Delay) or T
>
>     (Throughput) flag set, the Performance Measurement sub-TLV MUST be
>
>     present.
>
> I think you mean...
>
>     If the MPLS OAM Functions TLV has any of the L (Loss), D (Delay), and
>
>     T (Throughput) flags set, the Performance Measurement sub-TLV MUST be
>
>     present.
>
> ---
>
> 2.2.6
>
> Shouldn't Figure 7 show the optional sub-TLVs, and shouldn't the Length
>
> field include the lengths of those sub-TLVs?
>
> ---
>
> 2.2.9
>
>     When both working and protection
>
>     paths are configured, both LSPs SHOULD be configured with identical
>
>     settings of the E flag, T flag, and the refresh timer.
>
> This implies there are reasons (and mechanisms) to vary the
>
> configuration. You should explain them.
>
> ---
>
> 2.2.9
>
>     Length: indicates the length of the Value field in octets (4).
>
> Surely the length includes the sub-TLVs as well.
>
> ---
>
> Section 6
>
> You called out the attack I was thinking of. That is, by either changing
>
> the signaled configuration, injecting configuration packets, or by being
>
> an evil (or fat-fingered or misguided) sender of configuration, it is
>
> possible to degrade a node.
>
> You need to say what the protection is.
>
> This may be as simple as a node paying attention to its loading and
>
> refusing new OAM configurations that would take it close to the edge.
>
> But this approach creates an interesting new vector since, by loading
>
> one set of LSPs I may be able to prevent you running OAM on another set.
>
> ---
>
> Section 6
>
> Additionally, shouldn't you talk about the configuration of security
>
> mechanisms that exist for the OAM tools you are configuring?
>
> *From:*mpls [mailto:mpls-bounces@ietf.org] *On Behalf Of *Ross Callon
> *Sent:* 03 August 2015 16:45
> *To:* mpls@ietf.org <mailto:mpls@ietf.org>
> *Cc:* mpls-chairs@tools.ietf.org <mailto:mpls-chairs@tools.ietf.org>;
> draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org
> <mailto:draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org>
> *Subject:* [mpls] working group last call for
> draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
>
> Working Group,
>
> This is to initiate a two week working group last call on
> draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10.
>
> Please send your comments to the mpls wg mailing list (mpls@ietf.org
> <mailto:mpls@ietf.org>).
>
> There are no IPR disclosures against this document. All the authors have
> stated that they
>
> are not aware of any IPR that relates to this draft (two of the
> responses were private to
>
> the WG chairs).
>
> This working group last call ends Tuesday  August 18, 2015.
>
> The previous WGLC for this document failed due to a lack of response,
> even though there were
>
> no objections. I will remind the working group that for a WGLC a lack of
> response does not imply
>
> support; rather a lack of response implies either no opinion or a
> failure to read the document. As
>
> with any WGLC, working group participants are requested to read the
> document and comment,
>
> and if you feel that the document is ready for publication it is
> appropriate to respond to any WGLC
>
> with a short and simple email indicating support.
>
> Ross
>
> for the MPLS WG chairs
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From nobody Mon Aug 17 02:12:21 2015
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: "Andrew G. Malis" <agmalis@gmail.com>, Ross Callon <rcallon@juniper.net>
Thread-Topic: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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Subject: Re: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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From nobody Mon Aug 17 02:17:27 2015
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From: Mach Chen <mach.chen@huawei.com>
To: Ross Callon <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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Date: Mon, 17 Aug 2015 09:17:10 +0000
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Subject: Re: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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--_000_F73A3CB31E8BE34FA1BBE3C8F0CB2AE28B578632SZXEMA510MBXchi_
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Support as co-author.

Best regards,
Mach

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: Friday, August 14, 2015 3:24 AM
To: mpls@ietf.org
Cc: mpls-chairs@ietf.org
Subject: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04

This is to start a two week poll on adopting draft-mirsky-mpls-bfd-directed=
-04
as an MPLS working group document.

Please send your comments (support/not support) to the mpls working group
mailing list (mpls@ietf.org<mailto:mpls@ietf.org>).

This poll for adoption will end Friday August 28, 2015.

Thanks, Ross


--_000_F73A3CB31E8BE34FA1BBE3C8F0CB2AE28B578632SZXEMA510MBXchi_
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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Support as=
 co-author.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Best regar=
ds,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Mach<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
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<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;"> mpls [mailto:mpls-bounces@ietf.org]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> Friday, August 14, 2015 3:24 AM<br>
<b>To:</b> mpls@ietf.org<br>
<b>Cc:</b> mpls-chairs@ietf.org<br>
<b>Subject:</b> [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04<=
o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">This is to start a two w=
eek poll on adopting draft-mirsky-mpls-bfd-directed-04<o:p></o:p></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">as an MPLS working group=
 document.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">Please send your comment=
s (support/not support) to the mpls working group
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">mailing list (<a href=3D=
"mailto:mpls@ietf.org"><span style=3D"color:windowtext">mpls@ietf.org</span=
></a>).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">This poll for adoption w=
ill end Friday August 28, 2015.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">Thanks, Ross<o:p></o:p><=
/span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span>=
</p>
</div>
</div>
</div>
</body>
</html>

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From nobody Mon Aug 17 02:24:14 2015
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Subject: Re: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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Support.

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: Thursday, August 13, 2015 3:24 PM
To: mpls@ietf.org
Cc: mpls-chairs@ietf.org
Subject: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04

This is to start a two week poll on adopting draft-mirsky-mpls-bfd-directed=
-04
as an MPLS working group document.

Please send your comments (support/not support) to the mpls working group
mailing list (mpls@ietf.org<mailto:mpls@ietf.org>).

This poll for adoption will end Friday August 28, 2015.

Thanks, Ross


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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Support.<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
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0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> mpls [ma=
ilto:mpls-bounces@ietf.org]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> Thursday, August 13, 2015 3:24 PM<br>
<b>To:</b> mpls@ietf.org<br>
<b>Cc:</b> mpls-chairs@ietf.org<br>
<b>Subject:</b> [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04<=
o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to start a two week poll on ado=
pting draft-mirsky-mpls-bfd-directed-04<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">as an MPLS working group document.<o:p>=
</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments (support/not =
support) to the mpls working group
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">mailing list (<a href=3D"mailto:mpls@ie=
tf.org"><span style=3D"color:windowtext">mpls@ietf.org</span></a>).<o:p></o=
:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This poll for adoption will end Friday =
August 28, 2015.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Thanks, Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
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From nobody Mon Aug 17 08:50:17 2015
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From: Stewart Bryant <stbryant@cisco.com>
To: "mpls@ietf.org" <mpls@ietf.org>
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Date: Mon, 17 Aug 2015 16:50:17 +0100
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Subject: [mpls] Should we split draft-bryant-mpls-synonymous-flow-labels into arch and application
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At the last IETF the question arose as to what the correct
document structure should be for the synonymous
label work.

The core draft is: draft-bryant-mpls-synonymous-flow-labels
which is a mixture pure SFL work and RFC6374 applications
work.

My inclination is to split the draft in two to separate the
SFL architecture from the RFC6374 application. However I
would like to take the sense of the WG on this.

I know that there needs to be more work on requirements
and will do a word by word review of that text and make proposals
and of course review comments on any of these texts are
always welcome.

- Stewart

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    At the last IETF the question arose as to what the correct<br>
    document structure should be for the synonymous<br>
    label work.<br>
    <br>
    The core draft is: draft-bryant-mpls-synonymous-flow-labels<span
      class="h1"></span>
    <meta http-equiv="content-type" content="text/html; charset=utf-8">
    <br>
    which is a mixture pure SFL work and RFC6374 applications<br>
    work.<br>
    <br>
    My inclination is to split the draft in two to separate the <br>
    SFL architecture from the RFC6374 application. However I<br>
    would like to take the sense of the WG on this.<br>
    <br>
    I know that there needs to be more work on requirements<br>
    and will do a word by word review of that text and make proposals<br>
    and of course review comments on any of these texts are<br>
    always welcome.<br>
    <br>
    - Stewart<br>
  </body>
</html>

--------------050307060400090100090803--


From nobody Mon Aug 17 09:59:05 2015
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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: Loa Andersson <loa@pi.nu>, "adrian@olddog.co.uk" <adrian@olddog.co.uk>, 'Ross Callon' <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Date: Mon, 17 Aug 2015 16:58:57 +0000
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References: <BY1PR0501MB143041FD755CA2819623985EA5180@BY1PR0501MB1430.namprd05.prod.outlook.com> <BY1PR0501MB1430CED3726DFB4949F67074A5770@BY1PR0501MB1430.namprd05.prod.outlook.com> <095e01d0d699$da786cd0$8f694670$@olddog.co.uk> <7347100B5761DC41A166AC17F22DF112218973FF@eusaamb103.ericsson.se> <55D194D3.5020209@pi.nu>
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Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Hi Loa,
thank you for pointing to it. Will change the text accordingly.

	Regards,
		Greg

-----Original Message-----
From: Loa Andersson [mailto:loa@pi.nu]=20
Sent: Monday, August 17, 2015 1:01 AM
To: Gregory Mirsky; adrian@olddog.co.uk; 'Ross Callon'; mpls@ietf.org
Cc: mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@t=
ools.ietf.org
Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mp=
ls-tp-oam-conf-10

Adrian and Greg,

I'm a co-author of this document and agree with Greg that this a very good =
and most of it should be worked in the draft.

However - a detail - we have converged on tLDP as the abbreviation for Targ=
eted LDP, we should use that (not T-LDP).

/Loa

On 2015-08-14 23:01, Gregory Mirsky wrote:
> Hi Adrian,
>
> thank you for your kind consideration, support of this work, the=20
> utmost thorough review and invaluable comments.
>
> I'll work on updating the document and will try to make new version=20
> available by next Friday to address all comments received in WGLC.
>
>                  Regards,
>
>                                  Greg
>
> *From:*mpls [mailto:mpls-bounces@ietf.org] *On Behalf Of *Adrian=20
> Farrel
> *Sent:* Friday, August 14, 2015 7:02 AM
> *To:* 'Ross Callon'; mpls@ietf.org
> *Cc:* mpls-chairs@tools.ietf.org;
> draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org
> *Subject:* Re: [mpls] working group last call for
> draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
>
> Hi Ross,
>
> Thanks for pursuing this to get proper review, and thanks to those who=20
> have reviewed and commented.
>
> In addition to their comments I have the following observations. I=20
> don't believe any of them says "this is a bad idea, do not publish",=20
> but I think some polish is needed on the draft.
>
> Many thanks to the authors for their work,
>
> Adrian
>
> =3D=3D=3D
>
> I think there are a few abbreviations that the RFC Editor will ask you=20
> to
>
> expand. You might as well handle these at the same time as any update
>
> resulting from last call.
>
> I see...
>
> Abstract
>
> - LSP
>
> Main text
>
> - LSP
>
> - NMS
>
> - T-LDP
>
> - RSVP-TE (curiously RSVP is allowed, so you can say "RSVP Traffic
>
>    Engineering (RSVP-TE)"
>
> - Tx and Rx (I think you might as well just write these in full)
>
> ---
>
> Para 3 of the Intro has
>
>> MPLS Transport Profile (MPLS-TP)
>
> but this is not the first use of the abbreviation. Move it up to the
>
> first para?
>
> Actually, maybe move the third paragraph to be the first para?
>
> ---
>
> 2.1.2 has
>
>     To customize the configuration one would set the
>
>     respective flags in the including the respective Loss and/or Delay
>
>     sub-TLVs).
>
> Doesn't parse.
>
> ...flags in the MPLS OAM Functions TLV and including...    ?
>
> ---
>
> 2.1.3
>
> s/Corresponding Server MEP needs/The corresponding Server MEP needs/
>
> ---
>
> 2.2 needs to explain:
>
> - The absence of the MPLS OAM Functions TLV is equivalent to the TLV
>
>    being present with all bits set to zero
>
> - If more than one MPLS OAM Functions TLV is present, what will the
>
>    receiver do? Options are:
>
>    - Process the first and ignore subsequent instances
>
>    - Reject the message
>
>    - Crash
>
> - What happens if a bit that is unknown is set?
>
> Are you sure you don't want IANA to track the MPLS OAM Functions Flags?
>
> This is different from the flags fields in the sub-TLVs that are
>
> specific to particular OAM tools because in this case new OAM=20
> mechanisms
>
> may show up requesting configuration.
>
> You have...
>
>     Length: the length of the MPLS OAM Function Flags field including=20
> the
>
>     total length of the sub-TLVs in octets.
>
>     MPLS OAM Function Flags: a bitmap numbered from left to right as
>
>     shown in the figure.
>
> Of course, the figure doesn't show an "MPLS OAM Function Flags" field.
>
> This could be resolved by fixing the figure where the individual bits
>
> don't need to be named, and by fixing the table to show MBZ for the
>
> reserved bits.
>
> Furthermore, it's a little unclear in 2.2 what the correlation is
>
> between the bit flags and the sub-TLVs.
>
> - Can a TLV be present if the "corresponding" is clear?
>
> - If the corresponding bit is set, must the sub-TLV be present?
>
> - And, of course, there are fewer sub-TLVs than bits.
>
> I think you need to tidy up by adding text.
>
> This leaves 2.2 looking like...
>
> 2.2.  MPLS OAM Functions TLV
>
>     The MPLS OAM Functions TLV presented in Figure 1 is carried as a=20
> TLV
>
>     of the MPLS Echo Request/Reply messages [RFC4379].  If the TLV is
>
>     absent is as though it were present with all bits clear (zero) and=20
> no
>
>     sub-TLVs present.  If the TLV is present more than once the first
>
>     instance MUST be processed and subsequent instances MUST be ignored.
>
>     The MPLS OAM Functions TLV contains a number of flags indicating
>
>     which OAM functions should be activated as well as OAM function
>
>     specific sub-TLVs with configuration parameters for the particular
>
>     function.
>
>      0                   1                   2                   3
>
>      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>     |  MPLS OAM Func. Type (TBA1)   |           Length              |
>
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>     |                  MPLS OAM Function Flags                      |
>
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>     |                                                               |
>
>     ~                           sub-TLVs                            ~
>
>     |                                                               |
>
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>                    Figure 1: MPLS OAM Functions TLV format
>
>     Type: indicates the MPLS OAM Functions TLV Section 4.
>
>     Length: the length of the MPLS OAM Function Flags field including=20
> the
>
>       total length of the sub-TLVs in octets, but excluding the length=20
> of
>
>       the Type and Length fields of the MPLS OAM Functions TLV.
>
>     MPLS OAM Function Flags: a bitmap numbered from left to right. =20
> These
>
>       flags are managed by IANA.  Those defined in this document as
>
>       presented in Table 1 in Section 4.  Undefined flags MUST be set=20
> to
>
>       zero and unknown flags MUST be ignored.  The flags indicate what
>
>       OAM is being configured and direct the presence of sub-TLVs as=20
> set
>
>       out below.
>
>     Sub-TLVs corresponding to the different flags are as follows:
>
>        - BFD Configuration sub-TLV MUST be included if either the CC,=20
> the
>
>         CV or, both MPLS OAM Function flags are set in the MPLS OAM
>
>          Functions TLV.
>
>        - Performance Monitoring sub-TLV MAY be present to carry any of
>
>          the following sub-TLVs.  In none of these sub-TLVs is present
>
>          then the Performance Monitoring sub-TLV is not included (that
>
>          is, an empty Performance Monitoring sub-TLV is not used).
>
>          - PM Loss sub-TLV MAY be included in the Performance=20
> Monitoring
>
>            sub-TLV if the PM/Loss OAM Function flag is set.  If the PM
>
>            Loss sub-TLV is not included, default configuration values=20
> are
>
>            used.  This sub-TLV MAY also be included if the Throughput
>
>            Measurement OAM Function flag is set and there is the need=20
> to
>
>            specify a measurement interval different from the default one.
>
>            In fact throughput measurement makes use of the same tools=20
> as
>
>            loss measurement which is why the same sub-TLV is used.  If
>
>            the PM/Loss OAM Function flag and the Throughput=20
> Measurement
>
>            OAM Function flag are both set, only at most one instance=20
> of
>
>            the PM Loss sub-TLV is used.
>
>          - PM Delay sub-TLV MAY be included in the Performance=20
> Monitoring
>
>            sub-TLV if the PM/Delay OAM Function flag is set.  If the=20
> PM
>
>           Delay sub-TLV is not included, default configuration values
>
>            are used.
>
>        - FMS sub-TLV MAY be included if the FMS OAM Function flag is set.
>
>          If the "FMS sub-TLV" is not included, default configuration
>
>          values are used.
>
>     If any sub-TLV is present without the corresponding flag being=20
> set,
>
>     the sub-TLV SHOULD be ignored.  If any sub-TLV that is required
>
>     according to the setting of the corresponding bit is absent or if
>
>     there is any parsing error within nested sub-TLVs this SHOULD be
>
>     treated as an encoding error as described in [RFC4379].
>
> Then, in Section 4 you can add...
>
>     IANA maintains the Multi-Protocol Label Switching (MPLS) Label
>
>     Switched Paths (LSPs) Ping Parameters registry.  IANA is requested=20
> to
>
>     create a new registry called the "MPLS OAM Functions Flags"=20
> registry
>
>     and to populate it as follows.
>
>    =20
> +------------+--------------------+---------------------------------+
>
>     |    Bit     | MPLS OAM Function  | Description                     |
>
>    |  Position  |        Flag        |                                 |
>
>    =20
> +------------+--------------------+---------------------------------+
>
>     |     0      |         C          | Continuity Check (CC)           |
>
>     |     1      |         V          | Connectivity Verification (CV)  |
>
>     |     2      |         F          | Fault Management Signal (FMS)   |
>
>     |     3      |         L          | Performance Measurement/Loss    |
>
>     |            |                    | (PM/Loss)                       |
>
>     |     4      |         D          | Performance Measurement/Delay   |
>
>     |            |                    | (PM/Delay)                      |
>
>     |     5      |         T          | Throughput Measurement          |
>
>    |    6-31    |                    | Unassigned (Must be zero)       |
>
>    =20
> +------------+--------------------+---------------------------------+
>
>                       Table 1: MPLS OAM Functions Flags
>
>     New flags are to be assigned by IETF Review [RFC5226].
>
> ---
>
> Are there any ordering implications for the sub-TLVs in section 2.2?
>
> ---
>
> 2.2.1
>
>     Length: indicates the length of the Value field in octets (4).
>
> Are you sure that the lengths of the sub-TLVs are not included?
>
> ---
>
> 2.2.1
>
>     BFD Negotiation (N): If set timer negotiation/re-negotiation via=20
> BFD
>
>     Control Messages is enabled, when cleared it is disabled.
>
> It would be useful to add to read...
>
>     BFD Negotiation (N): If set timer negotiation/re-negotiation via=20
> BFD
>
>     Control Messages is enabled, when cleared it is disabled and timer
>
>     configuration is achieved using Negotiation Timer Parameters=20
> sub-TLV
>
>     as described in Section 2.2.3.
>
> ---
>
> 2.2.1
>
>     Symmetric session (S): If set the BFD session MUST use symmetric
>
>     timing values.
>
> and
>
>     Integrity (I): If set BFD Authentication MUST be enabled.
>
> If clear is it MUST NOT, or MAY use the appropriate functions?
>
> ---
>
> 2.2.2
>
>     Local Discriminator: A unique, nonzero discriminator value=20
> generated
>
>     by the transmitting system and referring to itself, used to
>
>     demultiplex multiple BFD sessions between the same pair of systems.
>
> I presume this is "unique" in the context of the transmitting system.
>
> The phrase "and referring to itself" is unclear. So it might read=20
> better
>
> as...
>
>     Local Discriminator: A nonzero discriminator value that is unique=20
> in
>
>     context of the transmitting system that generates it. It is used=20
> to
>
>     demultiplex multiple BFD sessions between the same pair of systems.
>
> ---
>
> 2.2.3
>
> Acceptable Min. Asynchronous intervals: Are the values zero disallowed?
>
> ---
>
> 2.2.4
>
>     If BFD Authentication sub-TLV used for a BFD session in Up state=20
> then
>
>     the Sender of the MPLS LSP Echo Request SHOULD ensure that old and
>
>     new modes of authentication, i.e. combination of Auth.Type and Auth.
>
>     Key ID, used to send and receive BFD control packets until the=20
> Sender
>
>     can confirm that its peer had switched to the new authentication.
>
> Under what circumstances would an implementation vary this SHOULD and
>
> what would be the effect?
>
> ---
>
> 2.2.5
>
>     The Traffic Class sub-TLV is carried as a sub-TLV of the "BFD
>
>     Configuration sub-TLV" or "Fault Management Signal sub-TLV"
>
>     Section 2.2.9 and is depicted in Figure 6.
>
> This is ambiguous since "or" could be read to be exclusive. How about
>
> using "and"?
>
> ---
>
> 2.2.5
>
>     If TC sub-TLV is present, then the value of the TC field MUST be=20
> used
>
>     as the value of the TC field of an MPLS label stack entry.
>
> Maybe I am missing something, but I couldn't work out which LSE on=20
> which
>
> packet you are referring to. And it isn't even clear whether you mean=20
> to
>
> copy the value from the packet to this field, or from this field to=20
> the
>
> packet.
>
> Ditto the end of 2.2.9 which is a bit clearer but still not clear as=20
> to
>
> which LSE is being talked about.
>
> ---
>
> 2.2.6
>
>     If the MPLS OAM Functions TLV has either the L (Loss), D (Delay)=20
> or T
>
>     (Throughput) flag set, the Performance Measurement sub-TLV MUST be
>
>     present.
>
> I think you mean...
>
>     If the MPLS OAM Functions TLV has any of the L (Loss), D (Delay),=20
> and
>
>     T (Throughput) flags set, the Performance Measurement sub-TLV MUST=20
> be
>
>     present.
>
> ---
>
> 2.2.6
>
> Shouldn't Figure 7 show the optional sub-TLVs, and shouldn't the=20
> Length
>
> field include the lengths of those sub-TLVs?
>
> ---
>
> 2.2.9
>
>     When both working and protection
>
>     paths are configured, both LSPs SHOULD be configured with=20
> identical
>
>     settings of the E flag, T flag, and the refresh timer.
>
> This implies there are reasons (and mechanisms) to vary the
>
> configuration. You should explain them.
>
> ---
>
> 2.2.9
>
>     Length: indicates the length of the Value field in octets (4).
>
> Surely the length includes the sub-TLVs as well.
>
> ---
>
> Section 6
>
> You called out the attack I was thinking of. That is, by either=20
> changing
>
> the signaled configuration, injecting configuration packets, or by=20
> being
>
> an evil (or fat-fingered or misguided) sender of configuration, it is
>
> possible to degrade a node.
>
> You need to say what the protection is.
>
> This may be as simple as a node paying attention to its loading and
>
> refusing new OAM configurations that would take it close to the edge.
>
> But this approach creates an interesting new vector since, by loading
>
> one set of LSPs I may be able to prevent you running OAM on another set.
>
> ---
>
> Section 6
>
> Additionally, shouldn't you talk about the configuration of security
>
> mechanisms that exist for the OAM tools you are configuring?
>
> *From:*mpls [mailto:mpls-bounces@ietf.org] *On Behalf Of *Ross Callon
> *Sent:* 03 August 2015 16:45
> *To:* mpls@ietf.org <mailto:mpls@ietf.org>
> *Cc:* mpls-chairs@tools.ietf.org <mailto:mpls-chairs@tools.ietf.org>;
> draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org
> <mailto:draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org>
> *Subject:* [mpls] working group last call for
> draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
>
> Working Group,
>
> This is to initiate a two week working group last call on=20
> draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10.
>
> Please send your comments to the mpls wg mailing list (mpls@ietf.org=20
> <mailto:mpls@ietf.org>).
>
> There are no IPR disclosures against this document. All the authors=20
> have stated that they
>
> are not aware of any IPR that relates to this draft (two of the=20
> responses were private to
>
> the WG chairs).
>
> This working group last call ends Tuesday  August 18, 2015.
>
> The previous WGLC for this document failed due to a lack of response,=20
> even though there were
>
> no objections. I will remind the working group that for a WGLC a lack=20
> of response does not imply
>
> support; rather a lack of response implies either no opinion or a=20
> failure to read the document. As
>
> with any WGLC, working group participants are requested to read the=20
> document and comment,
>
> and if you feel that the document is ready for publication it is=20
> appropriate to respond to any WGLC
>
> with a short and simple email indicating support.
>
> Ross
>
> for the MPLS WG chairs
>
>
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>


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To: Ross Callon <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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Support.

- Xufeng

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: Thursday, August 13, 2015 3:24 PM
To: mpls@ietf.org
Cc: mpls-chairs@ietf.org
Subject: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04

This is to start a two week poll on adopting draft-mirsky-mpls-bfd-directed=
-04
as an MPLS working group document.

Please send your comments (support/not support) to the mpls working group
mailing list (mpls@ietf.org<mailto:mpls@ietf.org>).

This poll for adoption will end Friday August 28, 2015.

Thanks, Ross


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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Support.<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">- Xufeng<o:p></o:p></span=
></p>
</div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> mpls [ma=
ilto:mpls-bounces@ietf.org]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> Thursday, August 13, 2015 3:24 PM<br>
<b>To:</b> mpls@ietf.org<br>
<b>Cc:</b> mpls-chairs@ietf.org<br>
<b>Subject:</b> [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04<=
o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to start a two week poll on ado=
pting draft-mirsky-mpls-bfd-directed-04<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">as an MPLS working group document.<o:p>=
</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments (support/not =
support) to the mpls working group
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">mailing list (<a href=3D"mailto:mpls@ie=
tf.org"><span style=3D"color:windowtext">mpls@ietf.org</span></a>).<o:p></o=
:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This poll for adoption will end Friday =
August 28, 2015.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Thanks, Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
</div>
</div>
</body>
</html>

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From nobody Tue Aug 18 11:58:36 2015
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From: "George Swallow (swallow)" <swallow@cisco.com>
To: Nobo Akiya <nobo.akiya.dev@gmail.com>, Loa Andersson <loa@pi.nu>
Thread-Topic: Correction - [mpls] IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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Date: Tue, 18 Aug 2015 18:58:31 +0000
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Subject: Re: [mpls] Correction - IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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--_000_D1F8F86B3ED94swallowciscocom_
Content-Type: text/plain; charset="us-ascii"
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I am not aware of any IPR on this document.

George

From: Nobo Akiya <nobo.akiya.dev@gmail.com<mailto:nobo.akiya.dev@gmail.com>=
>
Date: Saturday, August 15, 2015 11:30 PM
To: Loa Andersson <loa@pi.nu<mailto:loa@pi.nu>>
Cc: "mpls@ietf.org<mailto:mpls@ietf.org>" <mpls@ietf.org<mailto:mpls@ietf.o=
rg>>, "mpls-chairs@tools.ietf.org<mailto:mpls-chairs@tools.ietf.org>" <mpls=
-chairs@tools.ietf.org<mailto:mpls-chairs@tools.ietf.org>>, "draft-kumarkin=
i-mpls-spring-lsp-ping@tools.ietf.org<mailto:draft-kumarkini-mpls-spring-ls=
p-ping@tools.ietf.org>" <draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.or=
g<mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org>>
Subject: Re: Correction - [mpls] IPR poll on draft-kumarkini-mpls-spring-ls=
p-ping
Resent-From: <wg-alias-bounces@tools.ietf.org<mailto:wg-alias-bounces@tools=
.ietf.org>>
Resent-To: <draft-kumarkini-mpls-spring-lsp-ping@ietf.org<mailto:draft-kuma=
rkini-mpls-spring-lsp-ping@ietf.org>>, <mpls-chairs@ietf.org<mailto:mpls-ch=
airs@ietf.org>>
Resent-Date: Saturday, August 15, 2015 11:30 PM

Hi Loa,

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

Regards,
Nobo

On Thu, Aug 6, 2015 at 5:33 PM, Loa Andersson <loa@pi.nu<mailto:loa@pi.nu>>=
 wrote:
Folks,

One of the authors of the document has found an error with the text
of the IPR Poll mail, thanks Nagendra! When you respond to the IPR poll
please respond to this mail (nothing bad will happen if you respond
to the original mail :) ).

The correct text should be:

Working Group,

We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for
working group adoption poll (can I use the abbreviation wgap?)

We will start with the IPR poll and then MPLS-RT and the poll.

This mail starts the IPR poll.

Are you aware of any IPR that applies to draft-kumarkini-mpls-spring-
lsp-ping?

If so, has this IPR been disclosed in compliance with IETF IPR rules
(see RFCs 3979, 4879, 3669 and 5378 for more details).

There no IPR disclosures filed against this document.

If you are listed as a document author or contributor please respond to
this email regardless of whether or not you are aware of any relevant
IPR. *The response needs to be sent to the MPLS wg mailing list.* The
document will not advance to the next stage until a response has been
received from each author and contributor.

If you are on the MPLS WG email list but are not listed as an author or
contributor, then please explicitly respond only if you are aware of any
IPR that has not yet been disclosed in conformance with IETF rules.


/Loa
mpls wg co-chair



--_000_D1F8F86B3ED94swallowciscocom_
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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
>
</head>
<body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-lin=
e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif; ">
<div>I am not aware of any IPR on this document.</div>
<div><br>
</div>
<div>George</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>Nobo Akiya &lt;<a href=3D"mai=
lto:nobo.akiya.dev@gmail.com">nobo.akiya.dev@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Saturday, August 15, 2015 11:=
30 PM<br>
<span style=3D"font-weight:bold">To: </span>Loa Andersson &lt;<a href=3D"ma=
ilto:loa@pi.nu">loa@pi.nu</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:mpls@ie=
tf.org">mpls@ietf.org</a>&quot; &lt;<a href=3D"mailto:mpls@ietf.org">mpls@i=
etf.org</a>&gt;, &quot;<a href=3D"mailto:mpls-chairs@tools.ietf.org">mpls-c=
hairs@tools.ietf.org</a>&quot; &lt;<a href=3D"mailto:mpls-chairs@tools.ietf=
.org">mpls-chairs@tools.ietf.org</a>&gt;,
 &quot;<a href=3D"mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.or=
g">draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org</a>&quot; &lt;<a hre=
f=3D"mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org">draft-kuma=
rkini-mpls-spring-lsp-ping@tools.ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: Correction - [mpls] IP=
R poll on draft-kumarkini-mpls-spring-lsp-ping<br>
<span style=3D"font-weight:bold">Resent-From: </span>&lt;<a href=3D"mailto:=
wg-alias-bounces@tools.ietf.org">wg-alias-bounces@tools.ietf.org</a>&gt;<br=
>
<span style=3D"font-weight:bold">Resent-To: </span>&lt;<a href=3D"mailto:dr=
aft-kumarkini-mpls-spring-lsp-ping@ietf.org">draft-kumarkini-mpls-spring-ls=
p-ping@ietf.org</a>&gt;, &lt;<a href=3D"mailto:mpls-chairs@ietf.org">mpls-c=
hairs@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Resent-Date: </span>Saturday, August 15, 2=
015 11:30 PM<br>
</div>
<div><br>
</div>
<blockquote id=3D"MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE" style=3D"BORDER-LEFT:=
 #b5c4df 5 solid; PADDING:0 0 0 5; MARGIN:0 0 0 5;">
<div>
<div>
<div dir=3D"ltr">Hi Loa,
<div><br>
</div>
<div><span style=3D"font-size:12.8000001907349px">I am not aware of any IPR=
 applicable to this document.</span><br>
</div>
<div><span style=3D"font-size:12.8000001907349px"><br>
</span></div>
<div><span style=3D"font-size:12.8000001907349px">Regards,</span></div>
<div><span style=3D"font-size:12.8000001907349px">Nobo</span></div>
</div>
<div class=3D"gmail_extra"><br>
<div class=3D"gmail_quote">On Thu, Aug 6, 2015 at 5:33 PM, Loa Andersson <s=
pan dir=3D"ltr">
&lt;<a href=3D"mailto:loa@pi.nu" target=3D"_blank">loa@pi.nu</a>&gt;</span>=
 wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
Folks,<br>
<br>
One of the authors of the document has found an error with the text<br>
of the IPR Poll mail, thanks Nagendra! When you respond to the IPR poll<br>
please respond to this mail (nothing bad will happen if you respond<br>
to the original mail :) ).<br>
<br>
The correct text should be:<br>
<br>
Working Group,<br>
<br>
We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for<br>
working group adoption poll (can I use the abbreviation wgap?)<br>
<br>
We will start with the IPR poll and then MPLS-RT and the poll.<br>
<br>
This mail starts the IPR poll.<br>
<br>
Are you aware of any IPR that applies to draft-kumarkini-mpls-spring-<br>
lsp-ping?<br>
<br>
If so, has this IPR been disclosed in compliance with IETF IPR rules<br>
(see RFCs 3979, 4879, 3669 and 5378 for more details).<br>
<br>
There no IPR disclosures filed against this document.<br>
<br>
If you are listed as a document author or contributor please respond to<br>
this email regardless of whether or not you are aware of any relevant<br>
IPR. *The response needs to be sent to the MPLS wg mailing list.* The<br>
document will not advance to the next stage until a response has been<br>
received from each author and contributor.<br>
<br>
If you are on the MPLS WG email list but are not listed as an author or<br>
contributor, then please explicitly respond only if you are aware of any<br=
>
IPR that has not yet been disclosed in conformance with IETF rules.<br>
<br>
<br>
/Loa<br>
mpls wg co-chair<br>
<br>
</blockquote>
</div>
<br>
</div>
</div>
</div>
</blockquote>
</span>
</body>
</html>

--_000_D1F8F86B3ED94swallowciscocom_--


From nobody Tue Aug 18 18:23:12 2015
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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: "adrian@olddog.co.uk" <adrian@olddog.co.uk>, 'Ross Callon' <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Hi Adrian,
your help cannot be overvalued.
Please find my responses to your comments, notes in-lined and tagged GIM>>.
Attached are diffs of -10 and candidate for -11 as well -11 version (it may=
 be useful for comments).

                Regards,
                                Greg

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Adrian Farrel
Sent: Friday, August 14, 2015 7:02 AM
To: 'Ross Callon'; mpls@ietf.org
Cc: mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@t=
ools.ietf.org
Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mp=
ls-tp-oam-conf-10

Hi Ross,

Thanks for pursuing this to get proper review, and thanks to those who have=
 reviewed and commented.

In addition to their comments I have the following observations. I don't be=
lieve any of them says "this is a bad idea, do not publish", but I think so=
me polish is needed on the draft.

Many thanks to the authors for their work,
Adrian

=3D=3D=3D

I think there are a few abbreviations that the RFC Editor will ask you to
expand. You might as well handle these at the same time as any update
resulting from last call.

I see...
Abstract
- LSP
Main text
- LSP
- NMS
- T-LDP
GIM>> There's just one occasion and thus abbreviation is not needed at all.

- RSVP-TE (curiously RSVP is allowed, so you can say "RSVP Traffic
  Engineering (RSVP-TE)"
- Tx and Rx (I think you might as well just write these in full)
GIM>> Agreed.

---

Para 3 of the Intro has
> MPLS Transport Profile (MPLS-TP)
but this is not the first use of the abbreviation. Move it up to the
first para?

Actually, maybe move the third paragraph to be the first para?

GIM>> Agreed and moved OAM expansion accordingly.
---

2.1.2 has

   To customize the configuration one would set the
   respective flags in the including the respective Loss and/or Delay
   sub-TLVs).

Doesn't parse.

...flags in the MPLS OAM Functions TLV and including...    ?
GIM>> Yes, thank you
---

2.1.3

s/Corresponding Server MEP needs/The corresponding Server MEP needs/
GIM>> Done
---

2.2 needs to explain:
- The absence of the MPLS OAM Functions TLV is equivalent to the TLV
  being present with all bits set to zero
- If more than one MPLS OAM Functions TLV is present, what will the
  receiver do? Options are:
  - Process the first and ignore subsequent instances
  - Reject the message
  - Crash
- What happens if a bit that is unknown is set?

Are you sure you don't want IANA to track the MPLS OAM Functions Flags?
This is different from the flags fields in the sub-TLVs that are
specific to particular OAM tools because in this case new OAM mechanisms
may show up requesting configuration.

You have...

   Length: the length of the MPLS OAM Function Flags field including the
   total length of the sub-TLVs in octets.

   MPLS OAM Function Flags: a bitmap numbered from left to right as
   shown in the figure.

Of course, the figure doesn't show an "MPLS OAM Function Flags" field.
This could be resolved by fixing the figure where the individual bits
don't need to be named, and by fixing the table to show MBZ for the
reserved bits.

Furthermore, it's a little unclear in 2.2 what the correlation is
between the bit flags and the sub-TLVs.

- Can a TLV be present if the "corresponding" is clear?
GIM>> Must be treated as error
- If the corresponding bit is set, must the sub-TLV be present?
GIM>> Not necessarily. Setting only bit flag MUST configure corresponding O=
AM in its default setting (whatever it is). Sub-TLVs MAY be used to overwri=
te default OAM configuration.
- And, of course, there are fewer sub-TLVs than bits.
GIM>> CC and CV share BFD and thus one sub-TLV.

I think you need to tidy up by adding text.

This leaves 2.2 looking like...

2.2.  MPLS OAM Functions TLV

   The MPLS OAM Functions TLV presented in Figure 1 is carried as a TLV
   of the MPLS Echo Request/Reply messages [RFC4379].  If the TLV is
   absent is as though it were present with all bits clear (zero) and no
   sub-TLVs present.  If the TLV is present more than once the first
   instance MUST be processed and subsequent instances MUST be ignored.

   The MPLS OAM Functions TLV contains a number of flags indicating
   which OAM functions should be activated as well as OAM function
   specific sub-TLVs with configuration parameters for the particular
   function.

    0                   1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |  MPLS OAM Func. Type (TBA1)   |           Length              |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                  MPLS OAM Function Flags                      |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                                                               |
   ~                           sub-TLVs                            ~
   |                                                               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

                  Figure 1: MPLS OAM Functions TLV format


   Type: indicates the MPLS OAM Functions TLV Section 4.

   Length: the length of the MPLS OAM Function Flags field including the
     total length of the sub-TLVs in octets, but excluding the length of
     the Type and Length fields of the MPLS OAM Functions TLV.

   MPLS OAM Function Flags: a bitmap numbered from left to right.  These
     flags are managed by IANA.  Those defined in this document as
     presented in Table 1 in Section 4.  Undefined flags MUST be set to
     zero and unknown flags MUST be ignored.  The flags indicate what
     OAM is being configured and direct the presence of sub-TLVs as set
     out below.

   Sub-TLVs corresponding to the different flags are as follows:

      - BFD Configuration sub-TLV MUST be included if either the CC, the
       CV or, both MPLS OAM Function flags are set in the MPLS OAM
        Functions TLV.

      - Performance Monitoring sub-TLV MAY be present to carry any of
        the following sub-TLVs.  In none of these sub-TLVs is present
        then the Performance Monitoring sub-TLV is not included (that
        is, an empty Performance Monitoring sub-TLV is not used).

        - PM Loss sub-TLV MAY be included in the Performance Monitoring
          sub-TLV if the PM/Loss OAM Function flag is set.  If the PM
          Loss sub-TLV is not included, default configuration values are
          used.  This sub-TLV MAY also be included if the Throughput
          Measurement OAM Function flag is set and there is the need to
          specify a measurement interval different from the default one.
          In fact throughput measurement makes use of the same tools as
          loss measurement which is why the same sub-TLV is used.  If
          the PM/Loss OAM Function flag and the Throughput Measurement
          OAM Function flag are both set, only at most one instance of
          the PM Loss sub-TLV is used.

        - PM Delay sub-TLV MAY be included in the Performance Monitoring
          sub-TLV if the PM/Delay OAM Function flag is set.  If the PM
         Delay sub-TLV is not included, default configuration values
          are used.

      - FMS sub-TLV MAY be included if the FMS OAM Function flag is set.
        If the "FMS sub-TLV" is not included, default configuration
        values are used.

   If any sub-TLV is present without the corresponding flag being set,
   the sub-TLV SHOULD be ignored.  If any sub-TLV that is required
   according to the setting of the corresponding bit is absent or if
   there is any parsing error within nested sub-TLVs this SHOULD be
   treated as an encoding error as described in [RFC4379].

Then, in Section 4 you can add...

   IANA maintains the Multi-Protocol Label Switching (MPLS) Label
   Switched Paths (LSPs) Ping Parameters registry.  IANA is requested to
   create a new registry called the "MPLS OAM Functions Flags" registry
   and to populate it as follows.

   +------------+--------------------+---------------------------------+
   |    Bit     | MPLS OAM Function  | Description                     |
  |  Position  |        Flag        |                                 |
   +------------+--------------------+---------------------------------+
   |     0      |         C          | Continuity Check (CC)           |
   |     1      |         V          | Connectivity Verification (CV)  |
   |     2      |         F          | Fault Management Signal (FMS)   |
   |     3      |         L          | Performance Measurement/Loss    |
   |            |                    | (PM/Loss)                       |
   |     4      |         D          | Performance Measurement/Delay   |
   |            |                    | (PM/Delay)                      |
   |     5      |         T          | Throughput Measurement          |
  |    6-31    |                    | Unassigned (Must be zero)       |
   +------------+--------------------+---------------------------------+

                     Table 1: MPLS OAM Functions Flags

   New flags are to be assigned by IETF Review [RFC5226].

GIM>> Many thanks, Adrian. I've followed your recommendations with minor ch=
anges. Please check the attached diff.
---

Are there any ordering implications for the sub-TLVs in section 2.2?
GIM>> No, should be order independent.
---

2.2.1

   Length: indicates the length of the Value field in octets (4).

Are you sure that the lengths of the sub-TLVs are not included?
GIM>> Great catch! Removed 4.
---

2.2.1

   BFD Negotiation (N): If set timer negotiation/re-negotiation via BFD
   Control Messages is enabled, when cleared it is disabled.

It would be useful to add to read...

   BFD Negotiation (N): If set timer negotiation/re-negotiation via BFD
   Control Messages is enabled, when cleared it is disabled and timer
   configuration is achieved using Negotiation Timer Parameters sub-TLV
   as described in Section 2.2.3.
GIM>> Agreed and incorporated.
---

2.2.1

   Symmetric session (S): If set the BFD session MUST use symmetric
   timing values.

and

   Integrity (I): If set BFD Authentication MUST be enabled.

If clear is it MUST NOT, or MAY use the appropriate functions?
GIM>> I think it is MAY for Symmetric and MSUT NOT for the Integrity.
---

2.2.2

   Local Discriminator: A unique, nonzero discriminator value generated
   by the transmitting system and referring to itself, used to
   demultiplex multiple BFD sessions between the same pair of systems.

I presume this is "unique" in the context of the transmitting system.
The phrase "and referring to itself" is unclear. So it might read better
as...

   Local Discriminator: A nonzero discriminator value that is unique in
   context of the transmitting system that generates it. It is used to
   demultiplex multiple BFD sessions between the same pair of systems.
GIM>> Agree
---

2.2.3

Acceptable Min. Asynchronous intervals: Are the values zero disallowed?
GIM>> Theoretically it is not disallowed and may be used to have uni-direct=
ional BFD session. But I agree, it is unlikely to be set to 0.
---

2.2.4

   If BFD Authentication sub-TLV used for a BFD session in Up state then
   the Sender of the MPLS LSP Echo Request SHOULD ensure that old and
   new modes of authentication, i.e. combination of Auth.Type and Auth.
   Key ID, used to send and receive BFD control packets until the Sender
   can confirm that its peer had switched to the new authentication.

Under what circumstances would an implementation vary this SHOULD and
what would be the effect?
GIM>> For example,  AdminDown MAY be used to perform transition from old to=
 new mode of authentication and verify that new is operational.

---

2.2.5

   The Traffic Class sub-TLV is carried as a sub-TLV of the "BFD
   Configuration sub-TLV" or "Fault Management Signal sub-TLV"
   Section 2.2.9 and is depicted in Figure 6.

This is ambiguous since "or" could be read to be exclusive. How about
using "and"?
GIM>> Agree
---

2.2.5

   If TC sub-TLV is present, then the value of the TC field MUST be used
   as the value of the TC field of an MPLS label stack entry.

Maybe I am missing something, but I couldn't work out which LSE on which
packet you are referring to. And it isn't even clear whether you mean to
copy the value from the packet to this field, or from this field to the
packet.

Ditto the end of 2.2.9 which is a bit clearer but still not clear as to
which LSE is being talked about.
GIM>> We're trying to control TC for E-LSP so that state of the single BFD =
session be used to infer state of all CoS. Would the following improves the=
 clarity:
If TC sub-TLV is present, then value of the TC field MUST be used
as the value of the TC field of the MPLS label stack that corresponds
to the FEC for which fault detection is being performed.
---

2.2.6

   If the MPLS OAM Functions TLV has either the L (Loss), D (Delay) or T
   (Throughput) flag set, the Performance Measurement sub-TLV MUST be
   present.

I think you mean...

   If the MPLS OAM Functions TLV has any of the L (Loss), D (Delay), and
   T (Throughput) flags set, the Performance Measurement sub-TLV MUST be
   present.
GIM>> Yes, thank you, Adrian.
---

2.2.6

Shouldn't Figure 7 show the optional sub-TLVs, and shouldn't the Length
field include the lengths of those sub-TLVs?
GIM>> Expanded figure and removed '4' from Length.
---

2.2.9

   When both working and protection
   paths are configured, both LSPs SHOULD be configured with identical
   settings of the E flag, T flag, and the refresh timer.

This implies there are reasons (and mechanisms) to vary the
configuration. You should explain them.

---

2.2.9

   Length: indicates the length of the Value field in octets (4).

Surely the length includes the sub-TLVs as well.
GIM>> Removed '4'
---

Section 6

You called out the attack I was thinking of. That is, by either changing
the signaled configuration, injecting configuration packets, or by being
an evil (or fat-fingered or misguided) sender of configuration, it is
possible to degrade a node.

You need to say what the protection is.

This may be as simple as a node paying attention to its loading and
refusing new OAM configurations that would take it close to the edge.
But this approach creates an interesting new vector since, by loading
one set of LSPs I may be able to prevent you running OAM on another set.

---

Section 6

Additionally, shouldn't you talk about the configuration of security
mechanisms that exist for the OAM tools you are configuring?
GIM>> Would references to respective sections in RFC 5880, 5884, 6374, 6375=
, 6427 and 6428 be sufficient?

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: 03 August 2015 16:45
To: mpls@ietf.org<mailto:mpls@ietf.org>
Cc: mpls-chairs@tools.ietf.org<mailto:mpls-chairs@tools.ietf.org>; draft-ie=
tf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org<mailto:draft-ietf-mpls-lsp=
-ping-mpls-tp-oam-conf@tools.ietf.org>
Subject: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-t=
p-oam-conf-10

Working Group,

This is to initiate a two week working group last call on draft-ietf-mpls-l=
sp-ping-mpls-tp-oam-conf-10.

Please send your comments to the mpls wg mailing list (mpls@ietf.org<mailto=
:mpls@ietf.org>).

There are no IPR disclosures against this document. All the authors have st=
ated that they
are not aware of any IPR that relates to this draft (two of the responses w=
ere private to
the WG chairs).

This working group last call ends Tuesday  August 18, 2015.

The previous WGLC for this document failed due to a lack of response, even =
though there were
no objections. I will remind the working group that for a WGLC a lack of re=
sponse does not imply
support; rather a lack of response implies either no opinion or a failure t=
o read the document. As
with any WGLC, working group participants are requested to read the documen=
t and comment,
and if you feel that the document is ready for publication it is appropriat=
e to respond to any WGLC
with a short and simple email indicating support.

Ross
for the MPLS WG chairs



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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi Adrian,<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">your help cannot be overv=
alued.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Please find my responses =
to your comments, notes in-lined and tagged GIM&gt;&gt;.<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Attached are diffs of -10=
 and candidate for -11 as well -11 version (it may be useful for comments).=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; Greg<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> mpls [ma=
ilto:mpls-bounces@ietf.org]
<b>On Behalf Of </b>Adrian Farrel<br>
<b>Sent:</b> Friday, August 14, 2015 7:02 AM<br>
<b>To:</b> 'Ross Callon'; mpls@ietf.org<br>
<b>Cc:</b> mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam=
-conf@tools.ietf.org<br>
<b>Subject:</b> Re: [mpls] working group last call for draft-ietf-mpls-lsp-=
ping-mpls-tp-oam-conf-10<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi Ross,<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Thanks for=
 pursuing this to get proper review, and thanks to those who have reviewed =
and commented.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">In additio=
n to their comments I have the following observations. I don't believe any =
of them says &quot;this is a bad idea, do not publish&quot;, but I think
 some polish is needed on the draft.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Many thank=
s to the authors for their work,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Adrian<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">=3D=3D=3D<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I think th=
ere are a few abbreviations that the RFC Editor will ask you to<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">expand. Yo=
u might as well handle these at the same time as any update<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">resulting =
from last call.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I see...<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Abstract<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- LSP<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Main text<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- LSP<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- NMS<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- T-LDP<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; There&#8217;s just one occasion and thus abbreviation is not needed at al=
l.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- RSVP-TE =
(curiously RSVP is allowed, so you can say &quot;RSVP Traffic<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; Eng=
ineering (RSVP-TE)&quot;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- Tx and R=
x (I think you might as well just write these in full)<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Agreed.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Para 3 of =
the Intro has<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&gt; MPLS =
Transport Profile (MPLS-TP)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">but this i=
s not the first use of the abbreviation. Move it up to the
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">first para=
?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Actually, =
maybe move the third paragraph to be the first para?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Agreed and moved OAM expansion accordingly.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.1.2 has<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; To customize the configuration one would set the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; respective flags in the including the respective Loss and/or Delay<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; sub-TLVs).<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Doesn't pa=
rse.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">...flags i=
n the MPLS OAM Functions TLV and including...&nbsp;&nbsp;&nbsp; ?<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Yes, thank you</span><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.1.3<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">s/Correspo=
nding Server MEP needs/The corresponding Server MEP needs/<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Done</span><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-family:&qu=
ot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2 needs =
to explain:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- The abse=
nce of the MPLS OAM Functions TLV is equivalent to the TLV<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; bei=
ng present with all bits set to zero</span><span lang=3D"EN-GB" style=3D"fo=
nt-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color=
:#1F497D"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- If more =
than one MPLS OAM Functions TLV is present, what will the<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; rec=
eiver do? Options are:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; - P=
rocess the first and ignore subsequent instances<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; - R=
eject the message<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; - C=
rash<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- What hap=
pens if a bit that is unknown is set?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Are you su=
re you don't want IANA to track the MPLS OAM Functions Flags?<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">This is di=
fferent from the flags fields in the sub-TLVs that are<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">specific t=
o particular OAM tools because in this case new OAM mechanisms<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">may show u=
p requesting configuration.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">You have..=
.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Length: the length of the MPLS OAM Function Flags field including the<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; total length of the sub-TLVs in octets.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; MPLS OAM Function Flags: a bitmap numbered from left to right as<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; shown in the figure.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Of course,=
 the figure doesn't show an &quot;MPLS OAM Function Flags&quot; field.<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">This could=
 be resolved by fixing the figure where the individual bits<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">don't need=
 to be named, and by fixing the table to show MBZ for the<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">reserved b=
its.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Furthermor=
e, it's a little unclear in 2.2 what the correlation is<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">between th=
e bit flags and the sub-TLVs.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- Can a TL=
V be present if the &quot;corresponding&quot; is clear?<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Must be treated as error<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- If the c=
orresponding bit is set, must the sub-TLV be present?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Not necessarily. Setting only bit flag MUST configure corresponding OAM i=
n its default setting (whatever it is). Sub-TLVs MAY be used to
 overwrite default OAM configuration.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">- And, of =
course, there are fewer sub-TLVs than bits.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; CC and CV share BFD and thus one sub-TLV.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I think yo=
u need to tidy up by adding text.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">This leave=
s 2.2 looking like...<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.&nbsp;=
 MPLS OAM Functions TLV<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; The MPLS OAM Functions TLV presented in Figure 1 is carried as a TLV<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; of the MPLS Echo Request/Reply messages [RFC4379].&nbsp; If the TLV is<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; absent is as though it were present with all bits clear (zero) and no<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; sub-TLVs present.&nbsp; If the TLV is present more than once the first<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; instance MUST be processed and subsequent instances MUST be ignored.<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; The MPLS OAM Functions TLV contains a number of flags indicating<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; which OAM functions should be activated as well as OAM function<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; specific sub-TLVs with configuration parameters for the particular<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; function.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp; 2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp; 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-=
&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#4=
3;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp; MPLS OAM Func. Type (TBA1)&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Length&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-=
&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#4=
3;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MPLS OAM Function Flags&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-=
&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#4=
3;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; ~&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp; sub-TLVs&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ~<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;|<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-=
&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#4=
3;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp; Figure 1: MPLS OAM Functions TLV format<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Type: indicates the MPLS OAM Functions TLV Section 4.<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Length: the length of the MPLS OAM Function Flags field including the<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp; total length of the sub-TLVs in octets, but excluding the le=
ngth of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp; the Type and Length fields of the MPLS OAM Functions TLV.<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; MPLS OAM Function Flags: a bitmap numbered from left to right.&nbsp; The=
se<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp; flags are managed by IANA.&nbsp; Those defined in this docum=
ent as
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;presented in Table 1 in Section 4.&nbsp; Undefined flag=
s MUST be set to<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp; zero and unknown flags MUST be ignored.&nbsp; The flags indi=
cate what
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;OAM is being configured and direct the presence of sub-=
TLVs as set<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp; out below.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Sub-TLVs corresponding to the different flags are as follows:<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; - BFD Configuration sub-TLV MUST be included if either=
 the CC, the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp; CV or, both MPLS OAM Function flags are set in t=
he MPLS OAM
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Functions TLV.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; - Performance Monitoring sub-TLV MAY be present to car=
ry any of
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the following sub-TLVs.&nbsp; In none=
 of these sub-TLVs is present<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; then the Performance Monitoring sub-TLV is=
 not included (that
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;is, an empty Performance Monitoring s=
ub-TLV is not used).<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - PM Loss sub-TLV MAY be included in the P=
erformance Monitoring<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; sub-TLV if the PM/Loss OAM Fun=
ction flag is set.&nbsp; If the PM
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Loss sub-TLV is not inclu=
ded, default configuration values are<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; used.&nbsp; This sub-TLV MAY a=
lso be included if the Throughput<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Measurement OAM Function flag =
is set and there is the need to<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; specify a measurement interval=
 different from the default one.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; In fact throughput measurement=
 makes use of the same tools as<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; loss measurement which is why =
the same sub-TLV is used.&nbsp; If
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the PM/Loss OAM Function =
flag and the Throughput Measurement<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; OAM Function flag are both set=
, only at most one instance of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the PM Loss sub-TLV is used.<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - PM Delay sub-TLV MAY be included in the =
Performance Monitoring<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; sub-TLV if the PM/Delay OAM Fu=
nction flag is set.&nbsp; If the PM<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Delay sub-TLV is not included, defau=
lt configuration values<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; are used.<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; - FMS sub-TLV MAY be included if the FMS OAM Function =
flag is set.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; If the &quot;FMS sub-TLV&quot; is not incl=
uded, default configuration
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;values are used.<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; If any sub-TLV is present without the corresponding flag being set,&nbsp=
;&nbsp;&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;the sub-TLV SHOULD be ignored.&nbsp; If any sub-TLV that is require=
d<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; according to the setting of the corresponding bit is absent or if<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; there is any parsing error within nested sub-TLVs this SHOULD be<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; treated as an encoding error as described in [RFC4379].<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Then, in S=
ection 4 you can add...<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; IANA maintains the Multi-Protocol Label Switching (MPLS) Label<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Switched Paths (LSPs) Ping Parameters registry.&nbsp; IANA is requested =
to<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; create a new registry called the &quot;MPLS OAM Functions Flags&quot; re=
gistry<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; and to populate it as follows.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;------------&#43;--------------------&#43;-------------------------=
--------&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp; Bit&nbsp;&nbsp;&nbsp;&nbsp; | MPLS OAM Function&nbsp=
; | Description&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; |&n=
bsp; Position&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Flag&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;------------&#43;--------------------&#43;-------------------------=
--------&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; | Continuity Check (CC)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; V&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; | Connectivity Verification (CV)&nbsp; |<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; 2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; | Fault Management Signal (FMS)&nbsp;&nbsp; |<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; 3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; L&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; | Performance Measurement/Loss&nbsp;&nbsp;&nbsp; |<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | (PM/Loss)&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; 4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; | Performance Measurement/Delay&nbsp;&nbsp; |<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | (PM/Delay)&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; |&nbsp;&nbsp;&nbsp;&nbsp; 5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; T&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; | Throughput Measurement&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp; |&n=
bsp;&nbsp;&nbsp; 6-31&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp; | Unassigned (Must be zero)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; &#43;------------&#43;--------------------&#43;-------------------------=
--------&#43;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Table 1: MPLS OAM Functions Flags<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; New flags are to be assigned by IETF Review [RFC5226].<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Many thanks, Adrian. I&#8217;ve followed your recommendations with minor =
changes. Please check the attached diff.</span><span lang=3D"EN-GB" style=
=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;=
;color:#1F497D"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Are there =
any ordering implications for the sub-TLVs in section 2.2?<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; No, should be order independent.</span><span lang=3D"EN-GB" style=3D"font=
-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#=
1F497D"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.1<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Length: indicates the length of the Value field in octets (4).<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Are you su=
re that the lengths of the sub-TLVs are not included?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Great catch! Removed 4.</span><span lang=3D"EN-GB" style=3D"font-size:11.=
0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.1<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; BFD Negotiation (N): If set timer negotiation/re-negotiation via BFD<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Control Messages is enabled, when cleared it is disabled.<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">It would b=
e useful to add to read...<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; BFD Negotiation (N): If set timer negotiation/re-negotiation via BFD<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Control Messages is enabled, when cleared it is disabled and timer<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; configuration is achieved using Negotiation Timer Parameters sub-TLV<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; as described in Section 2.2.3.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Agreed and incorporated.</span><span lang=3D"EN-GB" style=3D"font-size:11=
.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.1<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Symmetric session (S): If set the BFD session MUST use symmetric<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; timing values.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">and<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Integrity (I): If set BFD Authentication MUST be enabled.<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">If clear i=
s it MUST NOT, or MAY use the appropriate functions?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; I think it is MAY for Symmetric and MSUT NOT for the Integrity.</span><sp=
an lang=3D"EN-GB" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;=
,&quot;sans-serif&quot;;color:#1F497D"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.2<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Local Discriminator: A unique, nonzero discriminator value generated<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; by the transmitting system and referring to itself, used to<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; demultiplex multiple BFD sessions between the same pair of systems.<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I presume =
this is &quot;unique&quot; in the context of the transmitting system.<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">The phrase=
 &quot;and referring to itself&quot; is unclear. So it might read better<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">as...<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Local Discriminator: A nonzero discriminator value that is unique in
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p;&nbsp;context of the transmitting system that generates it. It is used to=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; demultiplex multiple BFD sessions between the same pair of systems.<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Agree</span><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-family:&q=
uot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.3<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Acceptable=
 Min. Asynchronous intervals: Are the values zero disallowed?<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Theoretically it is not disallowed and may be used to have uni-directiona=
l BFD session. But I agree, it is unlikely to be set to 0.</span><span lang=
=3D"EN-GB" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;=
sans-serif&quot;;color:#1F497D"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.4<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; If BFD Authentication sub-TLV used for a BFD session in Up state then<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; the Sender of the MPLS LSP Echo Request SHOULD ensure that old and<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; new modes of authentication, i.e. combination of Auth.Type and Auth.<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Key ID, used to send and receive BFD control packets until the Sender<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; can confirm that its peer had switched to the new authentication.<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Under what=
 circumstances would an implementation vary this SHOULD and<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">what would=
 be the effect?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; For example, &nbsp;AdminDown MAY be used to perform transition from old t=
o new mode of authentication and verify that new is operational.<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.5<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; The Traffic Class sub-TLV is carried as a sub-TLV of the &quot;BFD<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Configuration sub-TLV&quot; or &quot;Fault Management Signal sub-TLV&quo=
t;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Section 2.2.9 and is depicted in Figure 6.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">This is am=
biguous since &quot;or&quot; could be read to be exclusive. How about<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">using &quo=
t;and&quot;?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Agree</span><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-family:&q=
uot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.5<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; If TC sub-TLV is present, then the value of the TC field MUST be used<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; as the value of the TC field of an MPLS label stack entry.<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Maybe I am=
 missing something, but I couldn't work out which LSE on which<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">packet you=
 are referring to. And it isn't even clear whether you mean to<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">copy the v=
alue from the packet to this field, or from this field to the<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">packet.<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Ditto the =
end of 2.2.9 which is a bit clearer but still not clear as to<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">which LSE =
is being talked about.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; We&#8217;re trying to control TC for E-LSP so that state of the single BF=
D session be used to infer state of all CoS. Would the following improves
 the clarity:<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span lang=3D"EN-GB" styl=
e=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot=
;;color:#1F497D">If TC sub-TLV is present, then value of the TC field MUST =
be used<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span lang=3D"EN-GB" styl=
e=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot=
;;color:#1F497D">as the value of the TC field of the MPLS label stack that =
corresponds<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span lang=3D"EN-GB" styl=
e=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot=
;;color:#1F497D">to the FEC for which fault detection is being performed.<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.6<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; If the MPLS OAM Functions TLV has either the L (Loss), D (Delay) or T<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; (Throughput) flag set, the Performance Measurement sub-TLV MUST be<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; present.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I think yo=
u mean...<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; If the MPLS OAM Functions TLV has any of the L (Loss), D (Delay), and<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; T (Throughput) flags set, the Performance Measurement sub-TLV MUST be<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; present.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Yes, thank you, Adrian.</span><span lang=3D"EN-GB" style=3D"font-size:11.=
0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.6<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Shouldn't =
Figure 7 show the optional sub-TLVs, and shouldn't the Length<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">field incl=
ude the lengths of those sub-TLVs?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Expanded figure and removed &#8216;4&#8217; from Length.</span><span lang=
=3D"EN-GB" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;=
sans-serif&quot;;color:#1F497D"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.9<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; When both working and protection<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; paths are configured, both LSPs SHOULD be configured with identical<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; settings of the E flag, T flag, and the refresh timer.<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">This impli=
es there are reasons (and mechanisms) to vary the
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">configurat=
ion. You should explain them.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">2.2.9<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbs=
p; Length: indicates the length of the Value field in octets (4).<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Surely the=
 length includes the sub-TLVs as well.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Removed &#8216;4&#8217;</span><span lang=3D"EN-GB" style=3D"font-size:11.=
0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Section 6<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">You called=
 out the attack I was thinking of. That is, by either changing<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">the signal=
ed configuration, injecting configuration packets, or by being<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">an evil (o=
r fat-fingered or misguided) sender of configuration, it is
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">possible t=
o degrade a node.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">You need t=
o say what the protection is.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">This may b=
e as simple as a node paying attention to its loading and<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">refusing n=
ew OAM configurations that would take it close to the edge.<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">But this a=
pproach creates an interesting new vector since, by loading<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">one set of=
 LSPs I may be able to prevent you running OAM on another set.<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">---<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Section 6<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Additional=
ly, shouldn't you talk about the configuration of security<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">mechanisms=
 that exist for the OAM tools you are configuring?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">GIM&gt;&gt=
; Would references to respective sections in RFC 5880, 5884, 6374, 6375, 64=
27 and 6428 be sufficient?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> mpls [<a=
 href=3D"mailto:mpls-bounces@ietf.org">mailto:mpls-bounces@ietf.org</a>]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> 03 August 2015 16:45<br>
<b>To:</b> <a href=3D"mailto:mpls@ietf.org">mpls@ietf.org</a><br>
<b>Cc:</b> <a href=3D"mailto:mpls-chairs@tools.ietf.org">mpls-chairs@tools.=
ietf.org</a>;
<a href=3D"mailto:draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org"=
>draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org</a><br>
<b>Subject:</b> [mpls] working group last call for draft-ietf-mpls-lsp-ping=
-mpls-tp-oam-conf-10<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p>&nbsp;</o:p></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Working Group,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to initiate a two week working =
group last call on draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments to the mpls w=
g mailing list (<a href=3D"mailto:mpls@ietf.org"><span style=3D"color:windo=
wtext">mpls@ietf.org</span></a>).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">There are no IPR disclosures against th=
is document. All the authors have stated that they
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">are not aware of any IPR that relates t=
o this draft (two of the responses were private to
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">the WG chairs).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This working group last call ends Tuesd=
ay&nbsp; August 18, 2015.&nbsp;
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The previous WGLC for this document fai=
led due to a lack of response, even though there were
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">no objections. I will remind the workin=
g group that for a WGLC a lack of response does not imply
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">support; rather a lack of response impl=
ies either no opinion or a failure to read the document. As
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with any WGLC, working group participan=
ts are requested to read the document and comment,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">and if you feel that the document is re=
ady for publication it is appropriate to respond to any WGLC
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with a short and simple email indicatin=
g support.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">for the MPLS WG chairs<o:p></o:p></span=
></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
</div>
</div>
</body>
</html>

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--_005_7347100B5761DC41A166AC17F22DF112218A8B04eusaamb103erics_--


From nobody Tue Aug 18 18:25:12 2015
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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: Ross Callon <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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Hi Ross,

Support. I've read this document and believe it is useful.

-Jie

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: Friday, August 14, 2015 3:24 AM
To: mpls@ietf.org
Cc: mpls-chairs@ietf.org
Subject: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04

This is to start a two week poll on adopting draft-mirsky-mpls-bfd-directed=
-04
as an MPLS working group document.

Please send your comments (support/not support) to the mpls working group
mailing list (mpls@ietf.org<mailto:mpls@ietf.org>).

This poll for adoption will end Friday August 28, 2015.

Thanks, Ross


--_000_76CD132C3ADEF848BD84D028D243C92774328ED7nkgeml512mbxchi_
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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi Ross,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Support. I=
&#8217;ve read this document and believe it is useful.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">-Jie<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;"> mpls [mailto:mpls-bounces@ietf.org]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> Friday, August 14, 2015 3:24 AM<br>
<b>To:</b> mpls@ietf.org<br>
<b>Cc:</b> mpls-chairs@ietf.org<br>
<b>Subject:</b> [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04<=
o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">This is to start a two w=
eek poll on adopting draft-mirsky-mpls-bfd-directed-04<o:p></o:p></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">as an MPLS working group=
 document.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">Please send your comment=
s (support/not support) to the mpls working group
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">mailing list (<a href=3D=
"mailto:mpls@ietf.org"><span style=3D"color:windowtext">mpls@ietf.org</span=
></a>).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">This poll for adoption w=
ill end Friday August 28, 2015.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span>=
</p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">Thanks, Ross<o:p></o:p><=
/span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span>=
</p>
</div>
</div>
</div>
</body>
</html>

--_000_76CD132C3ADEF848BD84D028D243C92774328ED7nkgeml512mbxchi_--


From nobody Wed Aug 19 09:50:04 2015
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From: Dan Frost <frost@mm.st>
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Cc: rtg-dir@ietf.org, draft-ietf-mpls-lsp-ping-reply-mode-simple@tools.ietf.org, mpls@ietf.org
Subject: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-reply-mode-simple-03.txt
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Hello,

I have been selected as the Routing Directorate reviewer for this draft.
The Routing Directorate seeks to review all routing or routing-related
drafts as they pass through IETF last call and IESG review, and
sometimes on special request. The purpose of the review is to provide
assistance to the Routing ADs. For more information about the Routing
Directorate, please see
=E2=80=8Bhttp://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir

Although these comments are primarily for the use of the Routing ADs, it
would be helpful if you could consider them along with any other IETF
Last Call comments that you receive, and strive to resolve them through
discussion or by updating the draft.

Document: draft-ietf-mpls-lsp-ping-reply-mode-simple-03.txt
Reviewer: Dan Frost
Review Date: 19 Aug 2015
Intended Status: Standards Track

Summary:

I have some minor concerns about this document that I think should be
resolved before publication.
=20=20=20
Comments:

This document addresses an important practical limitation affecting the
use of LSP Ping in deployed networks today.  It is for the most part
clearly written and complete, and contains helpful examples.

Major Issues:

No major issues found.

Minor Issues:

- Section 2, last paragraph: "This document adds one Reply Mode value to
describe the reverse LSP, ...".

This document does not appear to add a Reply Mode value, but rather to
modify the semantics of the "Reply via Specified Path (5)" Reply Mode,
as stated at the beginning of Section 3, so this sentence needs
changing.

- Section 3.1, first paragraph: Suggest adding RFC references for
associated LSPs, e.g. RFC 5960 for MPLS-TP.

- Section 3, general comment: This document is changing the semantics of
Reply Mode 5, and in particular changing the case of Mode 5 without a
Reply Path TLV from invalid to valid.  However, the document does not
appear to discuss interoperability issues in networks with a mix of
"old" and "new" LSRs.  This looks like something that should be
addressed explicitly.

- Section 3.1, last paragraph: This paragraph is very confusing and
either needs to be deleted or completely rewritten.  If, as it appears,
it is not changing existing requirements for IP addressing of LSP Ping
packets per RFCs 4379 and 7110, it should just be deleted.

- Section 4.1, preference ordering of reply options: The document
specifies that reply paths are to be preferred according to the order in
which they appear in the Reply Mode Order TLV.  However, it's not clear
from this document and RFC 7110 what the order semantics are of
including a Reply Path TLV with multiple sub-TLVs.  For instance, in
Section 4.1.1's example, FEC X and FEC Y are listed as different return
paths.  If they are different, what is their preference ordering and
where is this defined?

- General comment: It may be valuable for the authors to include a
Manageability Considerations or similar section to provide guidance to
implementors on configuration options, defaults, etc., particularly
given the operational difficulties that led to this document in the
first place.

Nits:

There are a lot (too many to list here) of minor English grammar
problems, such as missing articles, throughout the text.  I would
suggest the editors do a grammatical review pass to clean these up as
much as possible before the RFC Editor stage.

Cheers,
-d


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From: Ross Callon <rcallon@juniper.net>
To: "mpls@ietf.org" <mpls@ietf.org>, "draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org" <draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org>
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Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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This working group last call has now been completed, with sufficient suppor=
t and with no opposition. However, there were some comments received. I als=
o see that the authors have already worked on producing an update to addres=
s the comments.

Authors, when you are ready please post the updated draft to address the co=
mments received, and then I will proceed with submitting the document for p=
ublication.

Thanks, Ross
(as MPLS wg co-chair)

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: Monday, August 03, 2015 11:45 AM
To: mpls@ietf.org
Cc: mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@t=
ools.ietf.org
Subject: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-t=
p-oam-conf-10

Working Group,

This is to initiate a two week working group last call on draft-ietf-mpls-l=
sp-ping-mpls-tp-oam-conf-10.

Please send your comments to the mpls wg mailing list (mpls@ietf.org<mailto=
:mpls@ietf.org>).

There are no IPR disclosures against this document. All the authors have st=
ated that they
are not aware of any IPR that relates to this draft (two of the responses w=
ere private to
the WG chairs).

This working group last call ends Tuesday  August 18, 2015.

The previous WGLC for this document failed due to a lack of response, even =
though there were
no objections. I will remind the working group that for a WGLC a lack of re=
sponse does not imply
support; rather a lack of response implies either no opinion or a failure t=
o read the document. As
with any WGLC, working group participants are requested to read the documen=
t and comment,
and if you feel that the document is ready for publication it is appropriat=
e to respond to any WGLC
with a short and simple email indicating support.

Ross
for the MPLS WG chairs



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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">This working group last c=
all has now been completed, with sufficient support and with no opposition.=
 However, there were some comments received. I also see
 that the authors have already worked on producing an update to address the=
 comments.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Authors, when you are rea=
dy please post the updated draft to address the comments received, and then=
 I will proceed with submitting the document for publication.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Thanks, Ross<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">(as MPLS wg co-chair)<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> mpls [ma=
ilto:mpls-bounces@ietf.org]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> Monday, August 03, 2015 11:45 AM<br>
<b>To:</b> mpls@ietf.org<br>
<b>Cc:</b> mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam=
-conf@tools.ietf.org<br>
<b>Subject:</b> [mpls] working group last call for draft-ietf-mpls-lsp-ping=
-mpls-tp-oam-conf-10<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Working Group,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to initiate a two week working =
group last call on draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments to the mpls w=
g mailing list (<a href=3D"mailto:mpls@ietf.org"><span style=3D"color:windo=
wtext">mpls@ietf.org</span></a>).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">There are no IPR disclosures against th=
is document. All the authors have stated that they
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">are not aware of any IPR that relates t=
o this draft (two of the responses were private to
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">the WG chairs).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This working group last call ends Tuesd=
ay&nbsp; August 18, 2015.&nbsp;
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The previous WGLC for this document fai=
led due to a lack of response, even though there were
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">no objections. I will remind the workin=
g group that for a WGLC a lack of response does not imply
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">support; rather a lack of response impl=
ies either no opinion or a failure to read the document. As
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with any WGLC, working group participan=
ts are requested to read the document and comment,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">and if you feel that the document is re=
ady for publication it is appropriate to respond to any WGLC
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with a short and simple email indicatin=
g support.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">for the MPLS WG chairs<o:p></o:p></span=
></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
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From nobody Thu Aug 20 06:06:34 2015
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Subject: [mpls] Last Call: <draft-ietf-mpls-lsp-ping-reply-mode-simple-03.txt> (Label Switched Path (LSP) Ping/Traceroute Reply Mode Simplification) to Proposed Standard
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The IESG has received a request from the Multiprotocol Label Switching WG
(mpls) to consider the following document:
- 'Label Switched Path (LSP) Ping/Traceroute Reply Mode Simplification'
  <draft-ietf-mpls-lsp-ping-reply-mode-simple-03.txt> as Proposed
Standard

The IESG plans to make a decision in the next few weeks, and solicits
final comments on this action. Please send substantive comments to the
ietf@ietf.org mailing lists by 2015-09-03. 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 Multiprotocol Label Switching (MPLS) Label Switched Path (LSP)
   Ping and Traceroute use the Reply Mode field to signal the method to
   be used in the MPLS echo reply.  This document updates the "Reply via
   Specified Path (5)" Reply Mode value to easily indicate the reverse
   LSP.  This document also adds an optional TLV which can carry ordered
   list of Reply Mode values.

   This document updates RFC7110.





The file can be obtained via
https://datatracker.ietf.org/doc/draft-ietf-mpls-lsp-ping-reply-mode-simple/

IESG discussion can be tracked via
https://datatracker.ietf.org/doc/draft-ietf-mpls-lsp-ping-reply-mode-simple/ballot/


No IPR declarations have been submitted directly on this I-D.



From nobody Thu Aug 20 21:24:21 2015
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Subject: [mpls] I-D Action: draft-ietf-mpls-app-aware-tldp-01.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 Multiprotocol Label Switching Working Group of the IETF.

        Title           : Application-aware Targeted LDP
        Authors         : Santosh Esale
                          Raveendra Torvi
                          Chris Bowers
                          Luay Jalil
                          Uma Chunduri
                          Zhenbin Li
                          Kamran Raza
	Filename        : draft-ietf-mpls-app-aware-tldp-01.txt
	Pages           : 17
	Date            : 2015-08-20

Abstract:
   Recent targeted LDP applications such as remote loop-free alternate
   (LFA) and BGP auto discovered pseudowire may automatically establish
   a tLDP session to any LSR in a network.  The initiating LSR has
   information about the targeted applications to administratively
   control initiation of the session. However, the responding LSR has no
   such information to control acceptance of this session. This document
   defines a mechanism to advertise and negotiate Targeted Applications
   Capability during LDP session initialization.  As the responding LSR
   becomes aware of targeted applications, it may establish a limited
   number of tLDP sessions for certain applications. In addition, each
   targeted application is mapped to LDP Forwarding Equivalence Class
   (FEC) Elements to advertise only necessary LDP FEC-label bindings
   over the session.



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-mpls-app-aware-tldp/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-mpls-app-aware-tldp-01

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-app-aware-tldp-01


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

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


From nobody Fri Aug 21 00:13:15 2015
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From: "Adrian Farrel" <adrian@olddog.co.uk>
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I reviewed this document during working group last call and had some comments
that the authors addressed.

I think the document is now ready for publication as an RFC.

Adrian


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Subject: [mpls] IPR Disclosure Juniper Networks, Inc.'s Statement about IPR related to draft-kompella-mpls-rsvp-ecmp
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Dear Kireeti Kompella, Mike Hellers, Ravi Singh:


An IPR disclosure that pertains to your Internet-Draft entitled "Multi-path
Label Switched Paths Signaled Using RSVP-TE"
(draft-kompella-mpls-rsvp-ecmp) was submitted to the IETF Secretariat on  and
has been posted on the "IETF Page of Intellectual Property Rights Disclosures"
(https://datatracker.ietf.org/ipr/2662/). The title of the IPR disclosure is
"Juniper Networks, Inc.'s Statement about IPR related to
draft-kompella-mpls-rsvp-ecmp"


Thank you

IETF Secretariat


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Dear Kireeti Kompella, Luis M. Contreras:


An IPR disclosure that pertains to your Internet-Draft entitled "Resilient
MPLS Rings" (draft-kompella-mpls-rmr) was submitted to the IETF Secretariat
on  and has been posted on the "IETF Page of Intellectual Property Rights
Disclosures" (https://datatracker.ietf.org/ipr/2661/). The title of the IPR
disclosure is "Juniper Networks, Inc.'s Statement about IPR related to
draft-kompella-mpls-rmr"


Thank you

IETF Secretariat


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Dear Balaji Rajagopalan, Kireeti Kompella, George Swallow:


An IPR disclosure that pertains to your Internet-Draft entitled "Label
Distribution Using ARP" (draft-kompella-mpls-larp) was submitted to the
IETF Secretariat on  and has been posted on the "IETF Page of Intellectual
Property Rights Disclosures" (https://datatracker.ietf.org/ipr/2660/). The title
of the IPR disclosure is "Juniper Networks, Inc.'s Statement about IPR
related to draft-kompella-mpls-larp"


Thank you

IETF Secretariat


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Hi Greg,

I've not checked that you implemented the changes you said you would in =
your
email. No reason not to trust you.

[Major snipping]

>> Are there any ordering implications for the sub-TLVs in section 2.2?
>
> GIM>> No, should be order independent.

OK. Maybe...
OLD
   Sub-TLVs corresponding to the different flags are as follows:
NEW
   Sub-TLVs corresponding to the different flags are as follows. No=20
   meaning should be attached to the order of sub-TLVs.
END

>> 2.2.3
>>
>> Acceptable Min. Asynchronous intervals: Are the values zero =
disallowed?
>
> GIM>> Theoretically it is not disallowed and may be used to have uni-
> directional BFD session. But I agree, it is unlikely to be set to 0.

Well, yes, "unlikely".
I suppose there is no reason to prevent setting zero unless you would =
find
reserved value useful.

>> 2.2.4
>>
>>=A0 If BFD Authentication sub-TLV used for a BFD session in Up state =
then
>>=A0 the Sender of the MPLS LSP Echo Request SHOULD ensure that old and
>>=A0 new modes of authentication, i.e. combination of Auth.Type and =
Auth.
>>=A0 Key ID, used to send and receive BFD control packets until the =
Sender
>>=A0 can confirm that its peer had switched to the new authentication.
>>
>> Under what circumstances would an implementation vary this SHOULD and
>> what would be the effect?
>
> GIM>> For example, =A0AdminDown MAY be used to perform transition from
> old to new mode of authentication and verify that new is operational.

Silly me. I should have said, "Please explain in the document..." :-)

You really need to add and complete the following sentence...

An implementation MAY change the mode of authentication mode sooner =
if...

>> 2.2.5
>>
>>  If TC sub-TLV is present, then the value of the TC field MUST be =
used
>>=A0 as the value of the TC field of an MPLS label stack entry.
>>
>> Maybe I am missing something, but I couldn't work out which LSE on
>> which packet you are referring to. And it isn't even clear whether =
you
>> mean to copy the value from the packet to this field, or from this =
field
>> to the packet.
>>
>> Ditto the end of 2.2.9 which is a bit clearer but still not clear as =
to
>> which LSE is being talked about.
>
> GIM>> We=92re trying to control TC for E-LSP so that state of the =
single BFD
> session be used to infer state of all CoS. Would the following =
improves the
> clarity:
>
>   If TC sub-TLV is present, then value of the TC field MUST be used
>   as the value of the TC field of the MPLS label stack that =
corresponds
>   to the FEC for which fault detection is being performed.

Nearly there...

If the TC sub-TLV is present, then the sender of any data packets on the =
LSP
with a FEC that corresponds to the FEC for which fault detection is =
being
performed MUST use the value contained in the TC field of the sub-TLV as =
the
value of the TC field in the top label stack entry of the MPLS label =
stack.

>> 2.2.9
>>
>>=A0=A0 When both working and protection
>>=A0=A0 paths are configured, both LSPs SHOULD be configured with =
identical
>>=A0=A0 settings of the E flag, T flag, and the refresh timer.
>>
>> This implies there are reasons (and mechanisms) to vary the=20
>> configuration. You should explain them.

Missing an answer?
Change SHOULD to MUST or add: "An implementation MAY configure the =
working and
protection LSPs with different settings of these fields if..."

>> Section 6
>>
>> Additionally, shouldn't you talk about the configuration of security
>> mechanisms that exist for the OAM tools you are configuring?
>
> GIM>> Would references to respective sections in RFC 5880, 5884,
> 6374, 6375, 6427 and 6428 be sufficient?

The para with these simple references that you've added is OK, but I =
think you
are missing discussion of how these security aspects are configured. If =
we are
dealing with the configuration of OAM then we should deal with the =
configuration
of OAM security.

However, you may be wanting to say...

In order that the configuration of OAM function can be achieved securely =
through
the techniques described in this document, security mechanisms must =
already be
in place and operational for LSP Ping. Thus the exchange of security =
parameters
(such as keys) for use in securing OAM is outside the scope of this =
document and
is assumed to use an off-line mechanism or an established secure =
key-exchange
protocol.

You have a spelling mistake: "extenssions"

Ciao,
Adrian


From nobody Mon Aug 24 11:22:23 2015
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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: "adrian@olddog.co.uk" <adrian@olddog.co.uk>, 'Ross Callon' <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>
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Hi Adrian,
apologies for missed comments. I've used green to colour my responses with =
the same tag GIM>>.

        Regards,
                Greg

-----Original Message-----
From: Adrian Farrel [mailto:adrian@olddog.co.uk]
Sent: Sunday, August 23, 2015 8:36 AM
To: Gregory Mirsky; 'Ross Callon'; mpls@ietf.org
Cc: mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@t=
ools.ietf.org
Subject: RE: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mp=
ls-tp-oam-conf-10

Hi Greg,

I've not checked that you implemented the changes you said you would in you=
r email. No reason not to trust you.

[Major snipping]

>> Are there any ordering implications for the sub-TLVs in section 2.2?
>
> GIM>> No, should be order independent.

OK. Maybe...
OLD
   Sub-TLVs corresponding to the different flags are as follows:
NEW
   Sub-TLVs corresponding to the different flags are as follows. No
   meaning should be attached to the order of sub-TLVs.
END
GIM>> Done.

>> 2.2.3
>>
>> Acceptable Min. Asynchronous intervals: Are the values zero disallowed?
>
> GIM>> Theoretically it is not disallowed and may be used to have uni-
> directional BFD session. But I agree, it is unlikely to be set to 0.

Well, yes, "unlikely".
I suppose there is no reason to prevent setting zero unless you would find =
reserved value useful.
GIM>> yes, the RFC 5880 states that the value zero is reserved but does not=
 elaborate on interpretation of it nor prohibits its use.

>> 2.2.4
>>
>>  If BFD Authentication sub-TLV used for a BFD session in Up state
>>then
>>  the Sender of the MPLS LSP Echo Request SHOULD ensure that old and
>>  new modes of authentication, i.e. combination of Auth.Type and Auth.
>>  Key ID, used to send and receive BFD control packets until the
>>Sender
>>  can confirm that its peer had switched to the new authentication.
>>
>> Under what circumstances would an implementation vary this SHOULD and
>> what would be the effect?
>
> GIM>> For example,  AdminDown MAY be used to perform transition from
> old to new mode of authentication and verify that new is operational.

Silly me. I should have said, "Please explain in the document..." :-)

You really need to add and complete the following sentence...

An implementation MAY change the mode of authentication mode sooner if...
GIM>> Would the following do:
"An implementation MAY change mode of authentication if an operator re-eval=
uates security situation in and around the administrative domain."

>> 2.2.5
>>
>>  If TC sub-TLV is present, then the value of the TC field MUST be
>>used
>>  as the value of the TC field of an MPLS label stack entry.
>>
>> Maybe I am missing something, but I couldn't work out which LSE on
>> which packet you are referring to. And it isn't even clear whether
>> you mean to copy the value from the packet to this field, or from
>> this field to the packet.
>>
>> Ditto the end of 2.2.9 which is a bit clearer but still not clear as
>> to which LSE is being talked about.
>
> GIM>> We're trying to control TC for E-LSP so that state of the single
> GIM>> BFD
> session be used to infer state of all CoS. Would the following
> improves the
> clarity:
>
>   If TC sub-TLV is present, then value of the TC field MUST be used
>   as the value of the TC field of the MPLS label stack that corresponds
>   to the FEC for which fault detection is being performed.

Nearly there...

If the TC sub-TLV is present, then the sender of any data packets on the LS=
P with a FEC that corresponds to the FEC for which fault detection is being=
 performed MUST use the value contained in the TC field of the sub-TLV as t=
he value of the TC field in the top label stack entry of the MPLS label sta=
ck.
GIM>> Adrian, the proposed text, as I interpret it, requires that TC value =
been applied to all data packets, not only OAM. How about the following wor=
ding:
"If the TC sub-TLV is present, then the sender of any periodic continuity m=
onitoring messages or packets with fault management  information on the LSP=
 with a FEC that corresponds to the FEC for which fault detection is being =
performed MUST use the value contained in the TC field of the sub-TLV as th=
e value of the TC field in the top label stack entry of the MPLS label stac=
k."


>> 2.2.9
>>
>>   When both working and protection
>>   paths are configured, both LSPs SHOULD be configured with identical
>>   settings of the E flag, T flag, and the refresh timer.
>>
>> This implies there are reasons (and mechanisms) to vary the
>> configuration. You should explain them.

Missing an answer?
Change SHOULD to MUST or add: "An implementation MAY configure the working =
and protection LSPs with different settings of these fields if..."
GIM>> I've missed it. "An implementation MAY configure the working and prot=
ection LSPs with different settings of these fields in case of 1:N protecti=
on."

>> Section 6
>>
>> Additionally, shouldn't you talk about the configuration of security
>> mechanisms that exist for the OAM tools you are configuring?
>
> GIM>> Would references to respective sections in RFC 5880, 5884,
> 6374, 6375, 6427 and 6428 be sufficient?

The para with these simple references that you've added is OK, but I think =
you are missing discussion of how these security aspects are configured. If=
 we are dealing with the configuration of OAM then we should deal with the =
configuration of OAM security.

However, you may be wanting to say...

In order that the configuration of OAM function can be achieved securely th=
rough the techniques described in this document, security mechanisms must a=
lready be in place and operational for LSP Ping. Thus the exchange of secur=
ity parameters (such as keys) for use in securing OAM is outside the scope =
of this document and is assumed to use an off-line mechanism or an establis=
hed secure key-exchange protocol.

You have a spelling mistake: "extenssions"
GIM>> Thank you, Adrian. Done.
Ciao,
Adrian



--_000_7347100B5761DC41A166AC17F22DF112218AD64Feusaamb103erics_
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<font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt;">
<div>Hi Adrian,</div>
<div>apologies for missed comments. I've used green to colour my responses =
with the same tag GIM&gt;&gt;.</div>
<div>&nbsp;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; Greg</div>
<div>&nbsp;</div>
<div>-----Original Message-----<br>

From: Adrian Farrel [<a href=3D"mailto:adrian@olddog.co.uk">mailto:adrian@o=
lddog.co.uk</a>]
<br>

Sent: Sunday, August 23, 2015 8:36 AM<br>

To: Gregory Mirsky; 'Ross Callon'; mpls@ietf.org<br>

Cc: mpls-chairs@tools.ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@t=
ools.ietf.org<br>

Subject: RE: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mp=
ls-tp-oam-conf-10</div>
<div>&nbsp;</div>
<div>Hi Greg,</div>
<div>&nbsp;</div>
<div>I've not checked that you implemented the changes you said you would i=
n your email. No reason not to trust you.</div>
<div>&nbsp;</div>
<div>[Major snipping]</div>
<div>&nbsp;</div>
<div>&gt;&gt; Are there any ordering implications for the sub-TLVs in secti=
on 2.2?</div>
<div>&gt;</div>
<div>&gt; GIM&gt;&gt; No, should be order independent.</div>
<div>&nbsp;</div>
<div>OK. Maybe...</div>
<div>OLD</div>
<div>&nbsp;&nbsp; Sub-TLVs corresponding to the different flags are as foll=
ows:</div>
<div>NEW</div>
<div>&nbsp;&nbsp; Sub-TLVs corresponding to the different flags are as foll=
ows. No </div>
<div>&nbsp;&nbsp; meaning should be attached to the order of sub-TLVs.</div=
>
<div>END</div>
<div><font color=3D"#00B050">GIM&gt;&gt; Done.</font></div>
<div>&nbsp;</div>
<div>&gt;&gt; 2.2.3</div>
<div>&gt;&gt;</div>
<div>&gt;&gt; Acceptable Min. Asynchronous intervals: Are the values zero d=
isallowed?</div>
<div>&gt;</div>
<div>&gt; GIM&gt;&gt; Theoretically it is not disallowed and may be used to=
 have uni-</div>
<div>&gt; directional BFD session. But I agree, it is unlikely to be set to=
 0.</div>
<div>&nbsp;</div>
<div>Well, yes, &quot;unlikely&quot;.</div>
<div>I suppose there is no reason to prevent setting zero unless you would =
find reserved value useful.</div>
<div><font color=3D"#00B050">GIM&gt;&gt; yes, the RFC 5880 states that the =
value zero is reserved but does not elaborate on interpretation of it nor p=
rohibits its use.</font></div>
<div>&nbsp;</div>
<div>&gt;&gt; 2.2.4</div>
<div>&gt;&gt;</div>
<div>&gt;&gt;&nbsp; If BFD Authentication sub-TLV used for a BFD session in=
 Up state </div>
<div>&gt;&gt;then</div>
<div>&gt;&gt;&nbsp; the Sender of the MPLS LSP Echo Request SHOULD ensure t=
hat old and</div>
<div>&gt;&gt;&nbsp; new modes of authentication, i.e. combination of Auth.T=
ype and Auth.</div>
<div>&gt;&gt;&nbsp; Key ID, used to send and receive BFD control packets un=
til the </div>
<div>&gt;&gt;Sender</div>
<div>&gt;&gt;&nbsp; can confirm that its peer had switched to the new authe=
ntication.</div>
<div>&gt;&gt;</div>
<div>&gt;&gt; Under what circumstances would an implementation vary this SH=
OULD and </div>
<div>&gt;&gt; what would be the effect?</div>
<div>&gt;</div>
<div>&gt; GIM&gt;&gt; For example, &nbsp;AdminDown MAY be used to perform t=
ransition from</div>
<div>&gt; old to new mode of authentication and verify that new is operatio=
nal.</div>
<div>&nbsp;</div>
<div>Silly me. I should have said, &quot;Please explain in the document...&=
quot; :-)</div>
<div>&nbsp;</div>
<div>You really need to add and complete the following sentence...</div>
<div>&nbsp;</div>
<div>An implementation MAY change the mode of authentication mode sooner if=
...</div>
<div><font color=3D"#00B050">GIM&gt;&gt; Would the following do:</font></di=
v>
<div><font color=3D"#00B050">&#8220;An implementation MAY change mode of au=
thentication if an operator re-evaluates security situation in and around t=
he administrative domain.&#8221;</font></div>
<div><font color=3D"#00B050">&nbsp;</font></div>
<div>&gt;&gt; 2.2.5</div>
<div>&gt;&gt;</div>
<div>&gt;&gt;&nbsp; If TC sub-TLV is present, then the value of the TC fiel=
d MUST be </div>
<div>&gt;&gt;used</div>
<div>&gt;&gt;&nbsp; as the value of the TC field of an MPLS label stack ent=
ry.</div>
<div>&gt;&gt;</div>
<div>&gt;&gt; Maybe I am missing something, but I couldn't work out which L=
SE on </div>
<div>&gt;&gt; which packet you are referring to. And it isn't even clear wh=
ether </div>
<div>&gt;&gt; you mean to copy the value from the packet to this field, or =
from </div>
<div>&gt;&gt; this field to the packet.</div>
<div>&gt;&gt;</div>
<div>&gt;&gt; Ditto the end of 2.2.9 which is a bit clearer but still not c=
lear as </div>
<div>&gt;&gt; to which LSE is being talked about.</div>
<div>&gt;</div>
<div>&gt; GIM&gt;&gt; We&#8217;re trying to control TC for E-LSP so that st=
ate of the single </div>
<div>&gt; GIM&gt;&gt; BFD</div>
<div>&gt; session be used to infer state of all CoS. Would the following </=
div>
<div>&gt; improves the</div>
<div>&gt; clarity:</div>
<div>&gt;</div>
<div>&gt;&nbsp;&nbsp; If TC sub-TLV is present, then value of the TC field =
MUST be used</div>
<div>&gt;&nbsp;&nbsp; as the value of the TC field of the MPLS label stack =
that corresponds</div>
<div>&gt;&nbsp;&nbsp; to the FEC for which fault detection is being perform=
ed.</div>
<div>&nbsp;</div>
<div>Nearly there...</div>
<div>&nbsp;</div>
<div>If the TC sub-TLV is present, then the sender of any data packets on t=
he LSP with a FEC that corresponds to the FEC for which fault detection is =
being performed MUST use the value contained in the TC field of the sub-TLV=
 as the value of the TC field in
the top label stack entry of the MPLS label stack.</div>
<div><font color=3D"#00B050">GIM&gt;&gt; Adrian, the proposed text, as I in=
terpret it, requires that TC value been applied to all data packets, not on=
ly OAM. How about the following wording:</font></div>
<div><font color=3D"#00B050">&#8220;If the TC sub-TLV is present, then the =
sender of any periodic continuity monitoring messages or packets with fault=
 management&nbsp; information on the LSP with a FEC that corresponds to the=
 FEC for which fault detection is being performed
MUST use the value contained in the TC field of the sub-TLV as the value of=
 the TC field in the top label stack entry of the MPLS label stack.&#8221;<=
/font></div>
<div><font color=3D"#00B050">&nbsp;</font></div>
<div>&nbsp;</div>
<div>&gt;&gt; 2.2.9</div>
<div>&gt;&gt;</div>
<div>&gt;&gt;&nbsp;&nbsp; When both working and protection</div>
<div>&gt;&gt;&nbsp;&nbsp; paths are configured, both LSPs SHOULD be configu=
red with identical</div>
<div>&gt;&gt;&nbsp;&nbsp; settings of the E flag, T flag, and the refresh t=
imer.</div>
<div>&gt;&gt;</div>
<div>&gt;&gt; This implies there are reasons (and mechanisms) to vary the <=
/div>
<div>&gt;&gt; configuration. You should explain them.</div>
<div>&nbsp;</div>
<div>Missing an answer?</div>
<div>Change SHOULD to MUST or add: &quot;An implementation MAY configure th=
e working and protection LSPs with different settings of these fields if...=
&quot;</div>
<div><font color=3D"#00B050">GIM&gt;&gt; I&#8217;ve missed it. &#8220;An im=
plementation MAY configure the working and protection LSPs with different s=
ettings of these fields <u>in case of 1</u><u>:N protection</u>.&#8221;</fo=
nt></div>
<div>&nbsp;</div>
<div>&gt;&gt; Section 6</div>
<div>&gt;&gt;</div>
<div>&gt;&gt; Additionally, shouldn't you talk about the configuration of s=
ecurity </div>
<div>&gt;&gt; mechanisms that exist for the OAM tools you are configuring?<=
/div>
<div>&gt;</div>
<div>&gt; GIM&gt;&gt; Would references to respective sections in RFC 5880, =
5884,</div>
<div>&gt; 6374, 6375, 6427 and 6428 be sufficient?</div>
<div>&nbsp;</div>
<div>The para with these simple references that you've added is OK, but I t=
hink you are missing discussion of how these security aspects are configure=
d. If we are dealing with the configuration of OAM then we should deal with=
 the configuration of OAM security.</div>
<div>&nbsp;</div>
<div>However, you may be wanting to say...</div>
<div>&nbsp;</div>
<div>In order that the configuration of OAM function can be achieved secure=
ly through the techniques described in this document, security mechanisms m=
ust already be in place and operational for LSP Ping. Thus the exchange of =
security parameters (such as keys)
for use in securing OAM is outside the scope of this document and is assume=
d to use an off-line mechanism or an established secure key-exchange protoc=
ol.</div>
<div>&nbsp;</div>
<div>You have a spelling mistake: &quot;extenssions&quot;</div>
<div><font color=3D"#00B050">GIM&gt;&gt; Thank you, Adrian. Done.</font></d=
iv>
<div>Ciao,</div>
<div>Adrian</div>
<div>&nbsp;</div>
<div>&nbsp;</div>
</span></font>
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From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "'Gregory Mirsky'" <gregory.mirsky@ericsson.com>, "'Ross Callon'" <rcallon@juniper.net>, <mpls@ietf.org>
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Date: Tue, 25 Aug 2015 01:00:11 +0100
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Cc: mpls-chairs@tools.ietf.org, draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org
Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Perfect, Greg.
 
Thanks for all the hard work.
 
Adrian
 
From: Gregory Mirsky [mailto:gregory.mirsky@ericsson.com] 
Sent: 24 August 2015 19:22
To: adrian@olddog.co.uk; 'Ross Callon'; mpls@ietf.org
Cc: mpls-chairs@tools.ietf.org;
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org
Subject: RE: [mpls] working group last call for
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
 
Hi Adrian,
apologies for missed comments. I've used green to colour my responses with the
same tag GIM>>.
 
        Regards,
                Greg
 
-----Original Message-----
From: Adrian Farrel [mailto:adrian@olddog.co.uk] 
Sent: Sunday, August 23, 2015 8:36 AM
To: Gregory Mirsky; 'Ross Callon'; mpls@ietf.org
Cc: mpls-chairs@tools.ietf.org;
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org
Subject: RE: [mpls] working group last call for
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
 
Hi Greg,
 
I've not checked that you implemented the changes you said you would in your
email. No reason not to trust you.
 
[Major snipping]
 
>> Are there any ordering implications for the sub-TLVs in section 2.2?
> 
> GIM>> No, should be order independent.
 
OK. Maybe...
OLD
   Sub-TLVs corresponding to the different flags are as follows:
NEW
   Sub-TLVs corresponding to the different flags are as follows. No 
   meaning should be attached to the order of sub-TLVs.
END
GIM>> Done.
 
>> 2.2.3
>> 
>> Acceptable Min. Asynchronous intervals: Are the values zero disallowed?
> 
> GIM>> Theoretically it is not disallowed and may be used to have uni-
> directional BFD session. But I agree, it is unlikely to be set to 0.
 
Well, yes, "unlikely".
I suppose there is no reason to prevent setting zero unless you would find
reserved value useful.
GIM>> yes, the RFC 5880 states that the value zero is reserved but does not
elaborate on interpretation of it nor prohibits its use.
 
>> 2.2.4
>> 
>>  If BFD Authentication sub-TLV used for a BFD session in Up state 
>>then
>>  the Sender of the MPLS LSP Echo Request SHOULD ensure that old and
>>  new modes of authentication, i.e. combination of Auth.Type and Auth.
>>  Key ID, used to send and receive BFD control packets until the 
>>Sender
>>  can confirm that its peer had switched to the new authentication.
>> 
>> Under what circumstances would an implementation vary this SHOULD and 
>> what would be the effect?
> 
> GIM>> For example,  AdminDown MAY be used to perform transition from
> old to new mode of authentication and verify that new is operational.
 
Silly me. I should have said, "Please explain in the document..." :-)
 
You really need to add and complete the following sentence...
 
An implementation MAY change the mode of authentication mode sooner if...
GIM>> Would the following do:
"An implementation MAY change mode of authentication if an operator re-evaluates
security situation in and around the administrative domain."
 
>> 2.2.5
>> 
>>  If TC sub-TLV is present, then the value of the TC field MUST be 
>>used
>>  as the value of the TC field of an MPLS label stack entry.
>> 
>> Maybe I am missing something, but I couldn't work out which LSE on 
>> which packet you are referring to. And it isn't even clear whether 
>> you mean to copy the value from the packet to this field, or from 
>> this field to the packet.
>> 
>> Ditto the end of 2.2.9 which is a bit clearer but still not clear as 
>> to which LSE is being talked about.
> 
> GIM>> We're trying to control TC for E-LSP so that state of the single 
> GIM>> BFD
> session be used to infer state of all CoS. Would the following 
> improves the
> clarity:
> 
>   If TC sub-TLV is present, then value of the TC field MUST be used
>   as the value of the TC field of the MPLS label stack that corresponds
>   to the FEC for which fault detection is being performed.
 
Nearly there...
 
If the TC sub-TLV is present, then the sender of any data packets on the LSP
with a FEC that corresponds to the FEC for which fault detection is being
performed MUST use the value contained in the TC field of the sub-TLV as the
value of the TC field in the top label stack entry of the MPLS label stack.
GIM>> Adrian, the proposed text, as I interpret it, requires that TC value been
applied to all data packets, not only OAM. How about the following wording:
"If the TC sub-TLV is present, then the sender of any periodic continuity
monitoring messages or packets with fault management  information on the LSP
with a FEC that corresponds to the FEC for which fault detection is being
performed MUST use the value contained in the TC field of the sub-TLV as the
value of the TC field in the top label stack entry of the MPLS label stack."
 
 
>> 2.2.9
>> 
>>   When both working and protection
>>   paths are configured, both LSPs SHOULD be configured with identical
>>   settings of the E flag, T flag, and the refresh timer.
>> 
>> This implies there are reasons (and mechanisms) to vary the 
>> configuration. You should explain them.
 
Missing an answer?
Change SHOULD to MUST or add: "An implementation MAY configure the working and
protection LSPs with different settings of these fields if..."
GIM>> I've missed it. "An implementation MAY configure the working and
protection LSPs with different settings of these fields in case of 1:N
protection."
 
>> Section 6
>> 
>> Additionally, shouldn't you talk about the configuration of security 
>> mechanisms that exist for the OAM tools you are configuring?
> 
> GIM>> Would references to respective sections in RFC 5880, 5884,
> 6374, 6375, 6427 and 6428 be sufficient?
 
The para with these simple references that you've added is OK, but I think you
are missing discussion of how these security aspects are configured. If we are
dealing with the configuration of OAM then we should deal with the configuration
of OAM security.
 
However, you may be wanting to say...
 
In order that the configuration of OAM function can be achieved securely through
the techniques described in this document, security mechanisms must already be
in place and operational for LSP Ping. Thus the exchange of security parameters
(such as keys) for use in securing OAM is outside the scope of this document and
is assumed to use an off-line mechanism or an established secure key-exchange
protocol.
 
You have a spelling mistake: "extenssions"
GIM>> Thank you, Adrian. Done.
Ciao,
Adrian
 
 

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<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
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<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DEN-GB link=3Dblue =
vlink=3Dpurple style=3D'tab-interval:36.0pt'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Perfect, =
Greg.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Thanks for all the hard =
work.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Adrian<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><div =
style=3D'border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt'><div><div style=3D'border:none;border-top:solid #B5C4DF =
1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-f=
ont-family:"Times New =
Roman";mso-ansi-language:EN-US'>From:</span></b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-f=
ont-family:"Times New Roman";mso-ansi-language:EN-US'> Gregory Mirsky =
[mailto:gregory.mirsky@ericsson.com] <br><b>Sent:</b> 24 August 2015 =
19:22<br><b>To:</b> adrian@olddog.co.uk; 'Ross Callon'; =
mpls@ietf.org<br><b>Cc:</b> mpls-chairs@tools.ietf.org; =
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org<br><b>Subject:</=
b> RE: [mpls] working group last call for =
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10<o:p></o:p></span></p></div><=
/div><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>Hi =
Adrian,<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>apologies for missed comments. I've used =
green to colour my responses with the same tag =
GIM&gt;&gt;.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Regards,<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp; Greg<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>-----Original Message-----<br>From: =
Adrian Farrel [<a =
href=3D"mailto:adrian@olddog.co.uk">mailto:adrian@olddog.co.uk</a>] =
<br>Sent: Sunday, August 23, 2015 8:36 AM<br>To: Gregory Mirsky; 'Ross =
Callon'; mpls@ietf.org<br>Cc: mpls-chairs@tools.ietf.org; =
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org<br>Subject: RE: =
[mpls] working group last call for =
draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10<o:p></o:p></span></p></div><=
div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>Hi =
Greg,<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>I've not checked that you implemented the =
changes you said you would in your email. No reason not to trust =
you.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>[Major =
snipping]<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; Are there any ordering =
implications for the sub-TLVs in section =
2.2?<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt; GIM&gt;&gt; No, should be order =
independent.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>OK. =
Maybe...<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>OLD<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;&nbsp; Sub-TLVs corresponding to =
the different flags are as follows:<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>NEW<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;&nbsp; Sub-TLVs corresponding to =
the different flags are as follows. No =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;&nbsp; meaning should be attached =
to the order of sub-TLVs.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>END<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman";color:#00B050'>GIM&gt;&gt; =
Done.</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; =
2.2.3<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; Acceptable Min. Asynchronous =
intervals: Are the values zero =
disallowed?<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt; GIM&gt;&gt; Theoretically it is not =
disallowed and may be used to have =
uni-<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt; directional BFD session. But I =
agree, it is unlikely to be set to 0.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>Well, yes, =
&quot;unlikely&quot;.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>I suppose there is no reason to prevent =
setting zero unless you would find reserved value =
useful.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman";color:#00B050'>GIM&gt;&gt; yes, the RFC =
5880 states that the value zero is reserved but does not elaborate on =
interpretation of it nor prohibits its use.</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; =
2.2.4<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt;&nbsp; If BFD Authentication =
sub-TLV used for a BFD session in Up state =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;&gt;then<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt;&nbsp; the Sender of the MPLS LSP =
Echo Request SHOULD ensure that old =
and<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt;&nbsp; new modes of =
authentication, i.e. combination of Auth.Type and =
Auth.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt;&nbsp; Key ID, used to send and =
receive BFD control packets until the =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;&gt;Sender<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt;&nbsp; can confirm that its peer =
had switched to the new =
authentication.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; Under what circumstances would =
an implementation vary this SHOULD and =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; what would be the =
effect?<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt; GIM&gt;&gt; For example, =
&nbsp;AdminDown MAY be used to perform transition =
from<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt; old to new mode of authentication =
and verify that new is operational.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>Silly me. I should have said, =
&quot;Please explain in the document...&quot; =
:-)<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>You really need to add and complete the =
following sentence...<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>An implementation MAY change the mode of =
authentication mode sooner if...<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman";color:#00B050'>GIM&gt;&gt; Would the =
following do:</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman";color:#00B050'>&#8220;An implementation =
MAY change mode of authentication if an operator re-evaluates security =
situation in and around the administrative domain.&#8221;</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman";color:#00B050'>&nbsp;</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; =
2.2.5<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt;&nbsp; If TC sub-TLV is present, =
then the value of the TC field MUST be =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;&gt;used<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt;&nbsp; as the value of the TC =
field of an MPLS label stack entry.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; Maybe I am missing something, =
but I couldn't work out which LSE on <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; which packet you are referring =
to. And it isn't even clear whether <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; you mean to copy the value from =
the packet to this field, or from <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; this field to the =
packet.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; Ditto the end of 2.2.9 which is =
a bit clearer but still not clear as <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; to which LSE is being talked =
about.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt; GIM&gt;&gt; We&#8217;re trying to =
control TC for E-LSP so that state of the single =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt; GIM&gt;&gt; =
BFD<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt; session be used to infer state of =
all CoS. Would the following <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt; improves =
the<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt; =
clarity:<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&nbsp;&nbsp; If TC sub-TLV is =
present, then value of the TC field MUST be =
used<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&nbsp;&nbsp; as the value of the TC =
field of the MPLS label stack that =
corresponds<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&nbsp;&nbsp; to the FEC for which =
fault detection is being performed.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>Nearly =
there...<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>If the TC sub-TLV is present, then the =
sender of any data packets on the LSP with a FEC that corresponds to the =
FEC for which fault detection is being performed MUST use the value =
contained in the TC field of the sub-TLV as the value of the TC field in =
the top label stack entry of the MPLS label =
stack.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman";color:#00B050'>GIM&gt;&gt; Adrian, the =
proposed text, as I interpret it, requires that TC value been applied to =
all data packets, not only OAM. How about the following =
wording:</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman";color:#00B050'>&#8220;If the TC sub-TLV is =
present, then the sender of any periodic continuity monitoring messages =
or packets with fault management&nbsp; information on the LSP with a FEC =
that corresponds to the FEC for which fault detection is being performed =
MUST use the value contained in the TC field of the sub-TLV as the value =
of the TC field in the top label stack entry of the MPLS label =
stack.&#8221;</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman";color:#00B050'>&nbsp;</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; =
2.2.9<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt;&nbsp;&nbsp; When both working =
and protection<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt;&nbsp;&nbsp; paths are =
configured, both LSPs SHOULD be configured with =
identical<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt;&nbsp;&nbsp; settings of the E =
flag, T flag, and the refresh timer.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; This implies there are reasons =
(and mechanisms) to vary the <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; configuration. You should =
explain them.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>Missing an =
answer?<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>Change SHOULD to MUST or add: &quot;An =
implementation MAY configure the working and protection LSPs with =
different settings of these fields =
if...&quot;<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman";color:#00B050'>GIM&gt;&gt; I&#8217;ve =
missed it. &#8220;An implementation MAY configure the working and =
protection LSPs with different settings of these fields <u>in case of =
1:N protection</u>.&#8221;</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; Section =
6<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; Additionally, shouldn't you talk =
about the configuration of security <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt;&gt; mechanisms that exist for the =
OAM tools you are configuring?<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&gt;<o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt; GIM&gt;&gt; Would references to =
respective sections in RFC 5880, =
5884,<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&gt; 6374, 6375, 6427 and 6428 be =
sufficient?<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>The para with these simple references =
that you've added is OK, but I think you are missing discussion of how =
these security aspects are configured. If we are dealing with the =
configuration of OAM then we should deal with the configuration of OAM =
security.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>However, you may be wanting to =
say...<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>In order that the configuration of OAM =
function can be achieved securely through the techniques described in =
this document, security mechanisms must already be in place and =
operational for LSP Ping. Thus the exchange of security parameters (such =
as keys) for use in securing OAM is outside the scope of this document =
and is assumed to use an off-line mechanism or an established secure =
key-exchange protocol.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>You have a spelling mistake: =
&quot;extenssions&quot;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman";color:#00B050'>GIM&gt;&gt; Thank you, =
Adrian. Done.</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>Ciao,<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>Adrian<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-=
font-family:"Times New =
Roman"'>&nbsp;<o:p></o:p></span></p></div></div></div></body></html>
------=_NextPart_000_01DE_01D0DED1.661F1AB0--


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Subject: [mpls] I-D Action: draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-11.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 Multiprotocol Label Switching Working Group of the IETF.

        Title           : Configuration of Proactive Operations, Administration, and Maintenance (OAM) Functions for MPLS-based Transport Networks using LSP Ping
        Authors         : Elisa Bellagamba
                          Gregory Mirsky
                          Loa Andersson
                          Pontus Skoldstrom
                          Dave Ward
                          John Drake
	Filename        : draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-11.txt
	Pages           : 28
	Date            : 2015-08-24

Abstract:
   This specification describes the configuration of proactive MPLS-TP
   Operations, Administration, and Maintenance (OAM) Functions for a
   given Label Switched Path (LSP) using a set of TLVs that are carried
   by the LSP-Ping protocol.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-11

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-11


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

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


From nobody Mon Aug 24 17:19:13 2015
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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: Ross Callon <rcallon@juniper.net>, "mpls@ietf.org" <mpls@ietf.org>, "draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org" <draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org>
Thread-Topic: working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10
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Hi Ross,
the updated version just been posted. It addresses all comments received du=
ring the WGLC.

                Regards,
                                Greg

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: Wednesday, August 19, 2015 11:51 AM
To: mpls@ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org
Cc: mpls-chairs@tools.ietf.org
Subject: Re: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mp=
ls-tp-oam-conf-10

This working group last call has now been completed, with sufficient suppor=
t and with no opposition. However, there were some comments received. I als=
o see that the authors have already worked on producing an update to addres=
s the comments.

Authors, when you are ready please post the updated draft to address the co=
mments received, and then I will proceed with submitting the document for p=
ublication.

Thanks, Ross
(as MPLS wg co-chair)

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Ross Callon
Sent: Monday, August 03, 2015 11:45 AM
To: mpls@ietf.org<mailto:mpls@ietf.org>
Cc: mpls-chairs@tools.ietf.org<mailto:mpls-chairs@tools.ietf.org>; draft-ie=
tf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org<mailto:draft-ietf-mpls-lsp=
-ping-mpls-tp-oam-conf@tools.ietf.org>
Subject: [mpls] working group last call for draft-ietf-mpls-lsp-ping-mpls-t=
p-oam-conf-10

Working Group,

This is to initiate a two week working group last call on draft-ietf-mpls-l=
sp-ping-mpls-tp-oam-conf-10.

Please send your comments to the mpls wg mailing list (mpls@ietf.org<mailto=
:mpls@ietf.org>).

There are no IPR disclosures against this document. All the authors have st=
ated that they
are not aware of any IPR that relates to this draft (two of the responses w=
ere private to
the WG chairs).

This working group last call ends Tuesday  August 18, 2015.

The previous WGLC for this document failed due to a lack of response, even =
though there were
no objections. I will remind the working group that for a WGLC a lack of re=
sponse does not imply
support; rather a lack of response implies either no opinion or a failure t=
o read the document. As
with any WGLC, working group participants are requested to read the documen=
t and comment,
and if you feel that the document is ready for publication it is appropriat=
e to respond to any WGLC
with a short and simple email indicating support.

Ross
for the MPLS WG chairs



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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi Ross,<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">the updated version just =
been posted. It addresses all comments received during the WGLC.<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; Greg<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> mpls [ma=
ilto:mpls-bounces@ietf.org]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> Wednesday, August 19, 2015 11:51 AM<br>
<b>To:</b> mpls@ietf.org; draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.i=
etf.org<br>
<b>Cc:</b> mpls-chairs@tools.ietf.org<br>
<b>Subject:</b> Re: [mpls] working group last call for draft-ietf-mpls-lsp-=
ping-mpls-tp-oam-conf-10<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">This working group last c=
all has now been completed, with sufficient support and with no opposition.=
 However, there were some comments received. I also see
 that the authors have already worked on producing an update to address the=
 comments.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Authors, when you are rea=
dy please post the updated draft to address the comments received, and then=
 I will proceed with submitting the document for publication.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Thanks, Ross<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">(as MPLS wg co-chair)<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> mpls [<a=
 href=3D"mailto:mpls-bounces@ietf.org">mailto:mpls-bounces@ietf.org</a>]
<b>On Behalf Of </b>Ross Callon<br>
<b>Sent:</b> Monday, August 03, 2015 11:45 AM<br>
<b>To:</b> <a href=3D"mailto:mpls@ietf.org">mpls@ietf.org</a><br>
<b>Cc:</b> <a href=3D"mailto:mpls-chairs@tools.ietf.org">mpls-chairs@tools.=
ietf.org</a>;
<a href=3D"mailto:draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org"=
>draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf@tools.ietf.org</a><br>
<b>Subject:</b> [mpls] working group last call for draft-ietf-mpls-lsp-ping=
-mpls-tp-oam-conf-10<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Working Group,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to initiate a two week working =
group last call on draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-10.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments to the mpls w=
g mailing list (<a href=3D"mailto:mpls@ietf.org"><span style=3D"color:windo=
wtext">mpls@ietf.org</span></a>).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">There are no IPR disclosures against th=
is document. All the authors have stated that they
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">are not aware of any IPR that relates t=
o this draft (two of the responses were private to
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">the WG chairs).<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This working group last call ends Tuesd=
ay&nbsp; August 18, 2015.&nbsp;
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">The previous WGLC for this document fai=
led due to a lack of response, even though there were
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">no objections. I will remind the workin=
g group that for a WGLC a lack of response does not imply
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">support; rather a lack of response impl=
ies either no opinion or a failure to read the document. As
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with any WGLC, working group participan=
ts are requested to read the document and comment,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">and if you feel that the document is re=
ady for publication it is appropriate to respond to any WGLC
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">with a short and simple email indicatin=
g support.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">for the MPLS WG chairs<o:p></o:p></span=
></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
</div>
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Subject: [mpls] Last Call: <draft-ietf-mpls-mldp-node-protection-05.txt> (mLDP Node Protection) to Proposed Standard
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The IESG has received a request from the Multiprotocol Label Switching WG
(mpls) to consider the following document:
- 'mLDP Node Protection'
  <draft-ietf-mpls-mldp-node-protection-05.txt> as Proposed Standard

The IESG plans to make a decision in the next few weeks, and solicits
final comments on this action. Please send substantive comments to the
ietf@ietf.org mailing lists by 2015-09-08. 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


   This document describes procedures to support node protection for
   Point-to-Multipoint and Multipoint-to-Multipoint Label Switched Paths
   (MP LSPs) that has been built by "Multipoint Label Distribution
   Protocol"(mLDP).  In order to protect a node N, the Point of Local
   Repair (PLR) LSR of N must learn the Merge Point (MPT) LSR(s) of node
   N such that traffic can be redirected to them in case node N fails.
   Redirecting the traffic around the failed node N depends on existing
   P2P LSPs.  The pre-established LSPs originate from the PLR LSR and
   terminate on the MPT LSRs while bypassing LSR N.




The file can be obtained via
https://datatracker.ietf.org/doc/draft-ietf-mpls-mldp-node-protection/

IESG discussion can be tracked via
https://datatracker.ietf.org/doc/draft-ietf-mpls-mldp-node-protection/ballot/


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

   https://datatracker.ietf.org/ipr/2116/
   https://datatracker.ietf.org/ipr/1727/




From nobody Wed Aug 26 06:03:30 2015
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From: "George Swallow (swallow)" <swallow@cisco.com>
To: Loa Andersson <loa@pi.nu>
Thread-Topic: Correction - [mpls] IPR poll on draft-kumarkini-mpls-spring-lsp-ping
Thread-Index: AQHQz5Mk4kx77mhjZk6C7qCPNnx0cZ3++fOAgA9idwCAA+TvAIAML16A
Date: Wed, 26 Aug 2015 13:03:24 +0000
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Subject: [mpls] FW: Correction - IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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--_000_D203305711DA31swallowciscocom_
Content-Type: text/plain; charset="us-ascii"
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Loa -

Actually, I did.

George

From: George Swallow <swallow@cisco.com<mailto:swallow@cisco.com>>
Date: Tuesday, August 18, 2015 at 2:58 PM
To: Nobo Akiya <nobo.akiya.dev@gmail.com<mailto:nobo.akiya.dev@gmail.com>>,=
 Loa Andersson <loa@pi.nu<mailto:loa@pi.nu>>
Cc: "mpls@ietf.org<mailto:mpls@ietf.org>" <mpls@ietf.org<mailto:mpls@ietf.o=
rg>>, "mpls-chairs@tools.ietf.org<mailto:mpls-chairs@tools.ietf.org>" <mpls=
-chairs@tools.ietf.org<mailto:mpls-chairs@tools.ietf.org>>, "draft-kumarkin=
i-mpls-spring-lsp-ping@tools.ietf.org<mailto:draft-kumarkini-mpls-spring-ls=
p-ping@tools.ietf.org>" <draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.or=
g<mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org>>
Subject: Re: Correction - [mpls] IPR poll on draft-kumarkini-mpls-spring-ls=
p-ping

I am not aware of any IPR on this document.

George

From: Nobo Akiya <nobo.akiya.dev@gmail.com<mailto:nobo.akiya.dev@gmail.com>=
>
Date: Saturday, August 15, 2015 11:30 PM
To: Loa Andersson <loa@pi.nu<mailto:loa@pi.nu>>
Cc: "mpls@ietf.org<mailto:mpls@ietf.org>" <mpls@ietf.org<mailto:mpls@ietf.o=
rg>>, "mpls-chairs@tools.ietf.org<mailto:mpls-chairs@tools.ietf.org>" <mpls=
-chairs@tools.ietf.org<mailto:mpls-chairs@tools.ietf.org>>, "draft-kumarkin=
i-mpls-spring-lsp-ping@tools.ietf.org<mailto:draft-kumarkini-mpls-spring-ls=
p-ping@tools.ietf.org>" <draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.or=
g<mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org>>
Subject: Re: Correction - [mpls] IPR poll on draft-kumarkini-mpls-spring-ls=
p-ping
Resent-From: <wg-alias-bounces@tools.ietf.org<mailto:wg-alias-bounces@tools=
.ietf.org>>
Resent-To: <draft-kumarkini-mpls-spring-lsp-ping@ietf.org<mailto:draft-kuma=
rkini-mpls-spring-lsp-ping@ietf.org>>, <mpls-chairs@ietf.org<mailto:mpls-ch=
airs@ietf.org>>
Resent-Date: Saturday, August 15, 2015 11:30 PM

Hi Loa,

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

Regards,
Nobo

On Thu, Aug 6, 2015 at 5:33 PM, Loa Andersson <loa@pi.nu<mailto:loa@pi.nu>>=
 wrote:
Folks,

One of the authors of the document has found an error with the text
of the IPR Poll mail, thanks Nagendra! When you respond to the IPR poll
please respond to this mail (nothing bad will happen if you respond
to the original mail :) ).

The correct text should be:

Working Group,

We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for
working group adoption poll (can I use the abbreviation wgap?)

We will start with the IPR poll and then MPLS-RT and the poll.

This mail starts the IPR poll.

Are you aware of any IPR that applies to draft-kumarkini-mpls-spring-
lsp-ping?

If so, has this IPR been disclosed in compliance with IETF IPR rules
(see RFCs 3979, 4879, 3669 and 5378 for more details).

There no IPR disclosures filed against this document.

If you are listed as a document author or contributor please respond to
this email regardless of whether or not you are aware of any relevant
IPR. *The response needs to be sent to the MPLS wg mailing list.* The
document will not advance to the next stage until a response has been
received from each author and contributor.

If you are on the MPLS WG email list but are not listed as an author or
contributor, then please explicitly respond only if you are aware of any
IPR that has not yet been disclosed in conformance with IETF rules.


/Loa
mpls wg co-chair



--_000_D203305711DA31swallowciscocom_
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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
>
</head>
<body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-lin=
e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>Loa -</div>
<div><br>
</div>
<div>Actually, I did.&nbsp;</div>
<div><br>
</div>
<div>George</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>George Swallow &lt;<a href=3D=
"mailto:swallow@cisco.com">swallow@cisco.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, August 18, 2015 at 2=
:58 PM<br>
<span style=3D"font-weight:bold">To: </span>Nobo Akiya &lt;<a href=3D"mailt=
o:nobo.akiya.dev@gmail.com">nobo.akiya.dev@gmail.com</a>&gt;, Loa Andersson=
 &lt;<a href=3D"mailto:loa@pi.nu">loa@pi.nu</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:mpls@ie=
tf.org">mpls@ietf.org</a>&quot; &lt;<a href=3D"mailto:mpls@ietf.org">mpls@i=
etf.org</a>&gt;, &quot;<a href=3D"mailto:mpls-chairs@tools.ietf.org">mpls-c=
hairs@tools.ietf.org</a>&quot; &lt;<a href=3D"mailto:mpls-chairs@tools.ietf=
.org">mpls-chairs@tools.ietf.org</a>&gt;,
 &quot;<a href=3D"mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.or=
g">draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org</a>&quot; &lt;<a hre=
f=3D"mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org">draft-kuma=
rkini-mpls-spring-lsp-ping@tools.ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: Correction - [mpls] IP=
R poll on draft-kumarkini-mpls-spring-lsp-ping<br>
</div>
<div><br>
</div>
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif; ">
<div>I am not aware of any IPR on this document.</div>
<div><br>
</div>
<div>George</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>Nobo Akiya &lt;<a href=3D"mai=
lto:nobo.akiya.dev@gmail.com">nobo.akiya.dev@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Saturday, August 15, 2015 11:=
30 PM<br>
<span style=3D"font-weight:bold">To: </span>Loa Andersson &lt;<a href=3D"ma=
ilto:loa@pi.nu">loa@pi.nu</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:mpls@ie=
tf.org">mpls@ietf.org</a>&quot; &lt;<a href=3D"mailto:mpls@ietf.org">mpls@i=
etf.org</a>&gt;, &quot;<a href=3D"mailto:mpls-chairs@tools.ietf.org">mpls-c=
hairs@tools.ietf.org</a>&quot; &lt;<a href=3D"mailto:mpls-chairs@tools.ietf=
.org">mpls-chairs@tools.ietf.org</a>&gt;,
 &quot;<a href=3D"mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.or=
g">draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org</a>&quot; &lt;<a hre=
f=3D"mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org">draft-kuma=
rkini-mpls-spring-lsp-ping@tools.ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: Correction - [mpls] IP=
R poll on draft-kumarkini-mpls-spring-lsp-ping<br>
<span style=3D"font-weight:bold">Resent-From: </span>&lt;<a href=3D"mailto:=
wg-alias-bounces@tools.ietf.org">wg-alias-bounces@tools.ietf.org</a>&gt;<br=
>
<span style=3D"font-weight:bold">Resent-To: </span>&lt;<a href=3D"mailto:dr=
aft-kumarkini-mpls-spring-lsp-ping@ietf.org">draft-kumarkini-mpls-spring-ls=
p-ping@ietf.org</a>&gt;, &lt;<a href=3D"mailto:mpls-chairs@ietf.org">mpls-c=
hairs@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Resent-Date: </span>Saturday, August 15, 2=
015 11:30 PM<br>
</div>
<div><br>
</div>
<blockquote id=3D"MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE" style=3D"BORDER-LEFT:=
 #b5c4df 5 solid; PADDING:0 0 0 5; MARGIN:0 0 0 5;">
<div>
<div>
<div dir=3D"ltr">Hi Loa,
<div><br>
</div>
<div><span style=3D"font-size:12.8000001907349px">I am not aware of any IPR=
 applicable to this document.</span><br>
</div>
<div><span style=3D"font-size:12.8000001907349px"><br>
</span></div>
<div><span style=3D"font-size:12.8000001907349px">Regards,</span></div>
<div><span style=3D"font-size:12.8000001907349px">Nobo</span></div>
</div>
<div class=3D"gmail_extra"><br>
<div class=3D"gmail_quote">On Thu, Aug 6, 2015 at 5:33 PM, Loa Andersson <s=
pan dir=3D"ltr">
&lt;<a href=3D"mailto:loa@pi.nu" target=3D"_blank">loa@pi.nu</a>&gt;</span>=
 wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
Folks,<br>
<br>
One of the authors of the document has found an error with the text<br>
of the IPR Poll mail, thanks Nagendra! When you respond to the IPR poll<br>
please respond to this mail (nothing bad will happen if you respond<br>
to the original mail :) ).<br>
<br>
The correct text should be:<br>
<br>
Working Group,<br>
<br>
We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for<br>
working group adoption poll (can I use the abbreviation wgap?)<br>
<br>
We will start with the IPR poll and then MPLS-RT and the poll.<br>
<br>
This mail starts the IPR poll.<br>
<br>
Are you aware of any IPR that applies to draft-kumarkini-mpls-spring-<br>
lsp-ping?<br>
<br>
If so, has this IPR been disclosed in compliance with IETF IPR rules<br>
(see RFCs 3979, 4879, 3669 and 5378 for more details).<br>
<br>
There no IPR disclosures filed against this document.<br>
<br>
If you are listed as a document author or contributor please respond to<br>
this email regardless of whether or not you are aware of any relevant<br>
IPR. *The response needs to be sent to the MPLS wg mailing list.* The<br>
document will not advance to the next stage until a response has been<br>
received from each author and contributor.<br>
<br>
If you are on the MPLS WG email list but are not listed as an author or<br>
contributor, then please explicitly respond only if you are aware of any<br=
>
IPR that has not yet been disclosed in conformance with IETF rules.<br>
<br>
<br>
/Loa<br>
mpls wg co-chair<br>
<br>
</blockquote>
</div>
<br>
</div>
</div>
</div>
</blockquote>
</span></div>
</div>
</span>
</body>
</html>

--_000_D203305711DA31swallowciscocom_--


From nobody Wed Aug 26 06:17:36 2015
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Date: Wed, 26 Aug 2015 15:17:25 +0200
From: Loa Andersson <loa@pi.nu>
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Subject: Re: [mpls] FW: Correction - IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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George,

Yes - you did, sorry. I had mis-filed the mail.

/Loa

On 2015-08-26 15:03, George Swallow (swallow) wrote:
> Loa -
>
> Actually, I did.
>
> George
>
> From: George Swallow <swallow@cisco.com <mailto:swallow@cisco.com>>
> Date: Tuesday, August 18, 2015 at 2:58 PM
> To: Nobo Akiya <nobo.akiya.dev@gmail.com
> <mailto:nobo.akiya.dev@gmail.com>>, Loa Andersson <loa@pi.nu
> <mailto:loa@pi.nu>>
> Cc: "mpls@ietf.org <mailto:mpls@ietf.org>" <mpls@ietf.org
> <mailto:mpls@ietf.org>>, "mpls-chairs@tools.ietf.org
> <mailto:mpls-chairs@tools.ietf.org>" <mpls-chairs@tools.ietf.org
> <mailto:mpls-chairs@tools.ietf.org>>,
> "draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org
> <mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org>"
> <draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org
> <mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org>>
> Subject: Re: Correction - [mpls] IPR poll on
> draft-kumarkini-mpls-spring-lsp-ping
>
> I am not aware of any IPR on this document.
>
> George
>
> From: Nobo Akiya <nobo.akiya.dev@gmail.com
> <mailto:nobo.akiya.dev@gmail.com>>
> Date: Saturday, August 15, 2015 11:30 PM
> To: Loa Andersson <loa@pi.nu <mailto:loa@pi.nu>>
> Cc: "mpls@ietf.org <mailto:mpls@ietf.org>" <mpls@ietf.org
> <mailto:mpls@ietf.org>>, "mpls-chairs@tools.ietf.org
> <mailto:mpls-chairs@tools.ietf.org>" <mpls-chairs@tools.ietf.org
> <mailto:mpls-chairs@tools.ietf.org>>,
> "draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org
> <mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org>"
> <draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org
> <mailto:draft-kumarkini-mpls-spring-lsp-ping@tools.ietf.org>>
> Subject: Re: Correction - [mpls] IPR poll on
> draft-kumarkini-mpls-spring-lsp-ping
> Resent-From: <wg-alias-bounces@tools.ietf.org
> <mailto:wg-alias-bounces@tools.ietf.org>>
> Resent-To: <draft-kumarkini-mpls-spring-lsp-ping@ietf.org
> <mailto:draft-kumarkini-mpls-spring-lsp-ping@ietf.org>>,
> <mpls-chairs@ietf.org <mailto:mpls-chairs@ietf.org>>
> Resent-Date: Saturday, August 15, 2015 11:30 PM
>
>     Hi Loa,
>
>     I am not aware of any IPR applicable to this document.
>
>     Regards,
>     Nobo
>
>     On Thu, Aug 6, 2015 at 5:33 PM, Loa Andersson <loa@pi.nu
>     <mailto:loa@pi.nu>> wrote:
>
>         Folks,
>
>         One of the authors of the document has found an error with the text
>         of the IPR Poll mail, thanks Nagendra! When you respond to the
>         IPR poll
>         please respond to this mail (nothing bad will happen if you respond
>         to the original mail :) ).
>
>         The correct text should be:
>
>         Working Group,
>
>         We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for
>         working group adoption poll (can I use the abbreviation wgap?)
>
>         We will start with the IPR poll and then MPLS-RT and the poll.
>
>         This mail starts the IPR poll.
>
>         Are you aware of any IPR that applies to
>         draft-kumarkini-mpls-spring-
>         lsp-ping?
>
>         If so, has this IPR been disclosed in compliance with IETF IPR rules
>         (see RFCs 3979, 4879, 3669 and 5378 for more details).
>
>         There no IPR disclosures filed against this document.
>
>         If you are listed as a document author or contributor please
>         respond to
>         this email regardless of whether or not you are aware of any
>         relevant
>         IPR. *The response needs to be sent to the MPLS wg mailing
>         list.* The
>         document will not advance to the next stage until a response has
>         been
>         received from each author and contributor.
>
>         If you are on the MPLS WG email list but are not listed as an
>         author or
>         contributor, then please explicitly respond only if you are
>         aware of any
>         IPR that has not yet been disclosed in conformance with IETF rules.
>
>
>         /Loa
>         mpls wg co-chair
>
>


From nobody Wed Aug 26 06:34:45 2015
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Subject: Re: [mpls] Correction - IPR poll on draft-kumarkini-mpls-spring-lsp-ping
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--047d7bf198a0b83a91051e36e83e
Content-Type: text/plain; charset=UTF-8

I am not aware of any IPR related to this document.

Thanks
Sri

On Thu, Aug 6, 2015 at 1:33 AM, Loa Andersson <loa@pi.nu> wrote:

> Folks,
>
> One of the authors of the document has found an error with the text
> of the IPR Poll mail, thanks Nagendra! When you respond to the IPR poll
> please respond to this mail (nothing bad will happen if you respond
> to the original mail :) ).
>
> The correct text should be:
>
> Working Group,
>
> We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for
> working group adoption poll (can I use the abbreviation wgap?)
>
> We will start with the IPR poll and then MPLS-RT and the poll.
>
> This mail starts the IPR poll.
>
> Are you aware of any IPR that applies to draft-kumarkini-mpls-spring-
> lsp-ping?
>
> If so, has this IPR been disclosed in compliance with IETF IPR rules
> (see RFCs 3979, 4879, 3669 and 5378 for more details).
>
> There no IPR disclosures filed against this document.
>
> If you are listed as a document author or contributor please respond to
> this email regardless of whether or not you are aware of any relevant
> IPR. *The response needs to be sent to the MPLS wg mailing list.* The
> document will not advance to the next stage until a response has been
> received from each author and contributor.
>
> If you are on the MPLS WG email list but are not listed as an author or
> contributor, then please explicitly respond only if you are aware of any
> IPR that has not yet been disclosed in conformance with IETF rules.
>
>
> /Loa
> mpls wg co-chair
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>

--047d7bf198a0b83a91051e36e83e
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<div dir=3D"ltr">I am not aware of any IPR related to this document.<div><b=
r></div><div>Thanks</div><div>Sri</div></div><div class=3D"gmail_extra"><br=
><div class=3D"gmail_quote">On Thu, Aug 6, 2015 at 1:33 AM, Loa Andersson <=
span dir=3D"ltr">&lt;<a href=3D"mailto:loa@pi.nu" target=3D"_blank">loa@pi.=
nu</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"marg=
in:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Folks,<br>
<br>
One of the authors of the document has found an error with the text<br>
of the IPR Poll mail, thanks Nagendra! When you respond to the IPR poll<br>
please respond to this mail (nothing bad will happen if you respond<br>
to the original mail :) ).<br>
<br>
The correct text should be:<br>
<br>
Working Group,<br>
<br>
We have started to prepare draft-kumarkini-mpls-spring-lsp-ping for<br>
working group adoption poll (can I use the abbreviation wgap?)<br>
<br>
We will start with the IPR poll and then MPLS-RT and the poll.<br>
<br>
This mail starts the IPR poll.<br>
<br>
Are you aware of any IPR that applies to draft-kumarkini-mpls-spring-<br>
lsp-ping?<br>
<br>
If so, has this IPR been disclosed in compliance with IETF IPR rules<br>
(see RFCs 3979, 4879, 3669 and 5378 for more details).<br>
<br>
There no IPR disclosures filed against this document.<br>
<br>
If you are listed as a document author or contributor please respond to<br>
this email regardless of whether or not you are aware of any relevant<br>
IPR. *The response needs to be sent to the MPLS wg mailing list.* The<br>
document will not advance to the next stage until a response has been<br>
received from each author and contributor.<br>
<br>
If you are on the MPLS WG email list but are not listed as an author or<br>
contributor, then please explicitly respond only if you are aware of any<br=
>
IPR that has not yet been disclosed in conformance with IETF rules.<br>
<br>
<br>
/Loa<br>
mpls wg co-chair<br>
<br>
_______________________________________________<br>
mpls mailing list<br>
<a href=3D"mailto:mpls@ietf.org" target=3D"_blank">mpls@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/mpls" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/mpls</a><br>
</blockquote></div><br></div>

--047d7bf198a0b83a91051e36e83e--


From nobody Wed Aug 26 10:15:53 2015
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Subject: [mpls] I-D Action: draft-ietf-mpls-rfc6374-udp-return-path-04.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 Multiprotocol Label Switching Working Group of the IETF.

        Title           : RFC6374 UDP Return Path
        Authors         : Stewart Bryant
                          Siva Sivabalan
                          Sagar Soni
	Filename        : draft-ietf-mpls-rfc6374-udp-return-path-04.txt
	Pages           : 8
	Date            : 2015-08-26

Abstract:
   This document specifies the procedure to be used by the Packet Loss
   and Delay Measurement for MPLS Networks protocol defined in RFC6374
   when sending and processing MPLS performance management out-of-band
   responses for delay and loss measurements over an IP/UDP return path.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-mpls-rfc6374-udp-return-path/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-mpls-rfc6374-udp-return-path-04

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-rfc6374-udp-return-path-04


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

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


From nobody Thu Aug 27 01:23:31 2015
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Working Group,

The authors of draft-ietf-mpls-rfc6374-udp-return-path has told us that
the document is ready for working group last call.

Before we start the wglc we will do an IPR poll.


This mail starts the IPR poll.

Are you aware of any IPR that applies to draft-ietf-mpls-rfc6374-
udp-return-path?

If so, has this IPR been disclosed in compliance with IETF IPR rules
(see RFCs 3979, 4879, 3669 and 5378 for more details).

There are no IPR disclosures filed against this document.

If you are listed as a document author or contributor please respond to
this email regardless of whether or not you are aware of any relevant
IPR. *The response needs to be sent to the MPLS wg mailing list.* The
document will not advance to the next stage until a response has been
received from each author and contributor.

If you are on the MPLS WG email list but are not listed as an author or
contributor, then please explicitly respond only if you are aware of any
IPR that has not yet been disclosed in conformance with IETF rules.


/Loa
mpls wg co-chair
-- 


Loa Andersson                        email: loa@mail01.huawei.com
Senior MPLS Expert                          loa@pi.nu
Huawei Technologies (consultant)     phone: +46 739 81 21 64


From nobody Thu Aug 27 05:30:01 2015
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References: <55DEC8FA.4040700@pi.nu>
To: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
From: Stewart Bryant <stbryant@cisco.com>
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Date: Thu, 27 Aug 2015 13:30:02 +0100
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Subject: Re: [mpls] IPR poll for draft-ietf-mpls-rfc6374-udp-return-path
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I am unaware of any IPR that applies to this draft.

Stewart

On 27/08/2015 09:23, Loa Andersson wrote:
> Working Group,
>
> The authors of draft-ietf-mpls-rfc6374-udp-return-path has told us that
> the document is ready for working group last call.
>
> Before we start the wglc we will do an IPR poll.
>
>
> This mail starts the IPR poll.
>
> Are you aware of any IPR that applies to draft-ietf-mpls-rfc6374-
> udp-return-path?
>
> If so, has this IPR been disclosed in compliance with IETF IPR rules
> (see RFCs 3979, 4879, 3669 and 5378 for more details).
>
> There are no IPR disclosures filed against this document.
>
> If you are listed as a document author or contributor please respond to
> this email regardless of whether or not you are aware of any relevant
> IPR. *The response needs to be sent to the MPLS wg mailing list.* The
> document will not advance to the next stage until a response has been
> received from each author and contributor.
>
> If you are on the MPLS WG email list but are not listed as an author or
> contributor, then please explicitly respond only if you are aware of any
> IPR that has not yet been disclosed in conformance with IETF rules.
>
>
> /Loa
> mpls wg co-chair


-- 
For corporate legal information go to:

http://www.cisco.com/web/about/doing_business/legal/cri/index.html


From nobody Thu Aug 27 07:11:51 2015
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From: "Sagar Soni (sagsoni)" <sagsoni@cisco.com>
To: "Stewart Bryant (stbryant)" <stbryant@cisco.com>, Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: IPR poll for draft-ietf-mpls-rfc6374-udp-return-path
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Date: Thu, 27 Aug 2015 14:11:44 +0000
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Subject: Re: [mpls] IPR poll for draft-ietf-mpls-rfc6374-udp-return-path
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I am not aware of any IPR that applies to this draft.

Thanks,
Sagar

On 2015-08-27, 8:30 AM, "Stewart Bryant (stbryant)" <stbryant@cisco.com>
wrote:

>I am unaware of any IPR that applies to this draft.
>
>Stewart
>
>On 27/08/2015 09:23, Loa Andersson wrote:
>> Working Group,
>>
>> The authors of draft-ietf-mpls-rfc6374-udp-return-path has told us that
>> the document is ready for working group last call.
>>
>> Before we start the wglc we will do an IPR poll.
>>
>>
>> This mail starts the IPR poll.
>>
>> Are you aware of any IPR that applies to draft-ietf-mpls-rfc6374-
>> udp-return-path?
>>
>> If so, has this IPR been disclosed in compliance with IETF IPR rules
>> (see RFCs 3979, 4879, 3669 and 5378 for more details).
>>
>> There are no IPR disclosures filed against this document.
>>
>> If you are listed as a document author or contributor please respond to
>> this email regardless of whether or not you are aware of any relevant
>> IPR. *The response needs to be sent to the MPLS wg mailing list.* The
>> document will not advance to the next stage until a response has been
>> received from each author and contributor.
>>
>> If you are on the MPLS WG email list but are not listed as an author or
>> contributor, then please explicitly respond only if you are aware of any
>> IPR that has not yet been disclosed in conformance with IETF rules.
>>
>>
>> /Loa
>> mpls wg co-chair
>
>
>--=20
>For corporate legal information go to:
>
>http://www.cisco.com/web/about/doing_business/legal/cri/index.html
>


From nobody Thu Aug 27 23:29:17 2015
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From: "Anil Kumar S N (VRP Network BL)" <anil.sn@huawei.com>
To: Quintin zhao <quintin.zhao@huawei.com>, "skraza@cisco.com" <skraza@cisco.com>, "czhou@cisco.com" <czhou@cisco.com>, "lufang@microsoft.com" <lufang@microsoft.com>, "lilianyuan@chinamobile.com" <lilianyuan@chinamobile.com>, "daniel@olddog.co.uk" <daniel@olddog.co.uk>
Thread-Topic: [Need clarification] LDP Multi-Topology Extensions RFC 7307
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Date: Fri, 28 Aug 2015 06:28:56 +0000
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Subject: [mpls] [Need clarification] LDP Multi-Topology Extensions RFC 7307
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Hi All,

I need clarification on the LDP MT behavior.

                LDP extension for Multi-Topology explains following :

1.       New Address Families: MT IP

2.       LDP FEC Elements with MT IP AF

3.       LDP MT Capability Advertisement

As per LDP Specification RFC 5036, Address Family filed is carried in FEC T=
LV and Address List TLV.

Nothing about Address List TLV is mentioned in LDP Multi-Topology Extension=
s RFC 7307,
Can we use  "New Address Families: MT IP" in Address List TLV or not ? (whe=
n a interface is bound to Non-default MT)
I feel this can be explained more specifically similar to FEC TLV in LDP Mu=
lti-Topology Extensions RFC 7307.

Appreciate if authors or community members can help to clarify.

Thanks & Regards
Anil S N

"Be liberal in what you accept, and conservative in what you send" - Jon Po=
stel



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<p class=3D"MsoNormal">Hi All,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I need clarification on the LDP MT behavior.<o:p></o=
:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; LDP extension for Multi-Topology exp=
lains following :<o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:54.0pt;text-indent:-18.0=
pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"mso-list:Ignore">1.<span style=3D"font:=
7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>New Address Families: MT IP<o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:54.0pt;text-indent:-18.0=
pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"mso-list:Ignore">2.<span style=3D"font:=
7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>LDP FEC Elements with MT IP AF<o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:54.0pt;text-indent:-18.0=
pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"mso-list:Ignore">3.<span style=3D"font:=
7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>LDP MT Capability Advertisement<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"margin-left:36.0pt"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">As per LDP Specification RFC 5036, Address Family fi=
led is carried in FEC TLV and Address List TLV.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Nothing about Address List TLV is mentioned in LDP M=
ulti-Topology Extensions RFC 7307,
<o:p></o:p></p>
<p class=3D"MsoNormal">Can we use &nbsp;&#8220;New Address Families: MT IP&=
#8221; in Address List TLV or not ? (when a interface is bound to Non-defau=
lt MT)<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p></o:p></p>
<p class=3D"MsoNormal">I feel this can be explained more specifically simil=
ar to FEC TLV in LDP Multi-Topology Extensions RFC 7307.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Appreciate if authors or community members can help =
to clarify.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Thanks &amp; Regards<o:p></o:p></p>
<p class=3D"MsoNormal">Anil S N<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&#8220;Be liberal in what you accept, and conservati=
ve in what you send&#8221; - Jon Postel<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</body>
</html>

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From: Quintin zhao <quintin.zhao@huawei.com>
To: "Anil Kumar S N (VRP Network BL)" <anil.sn@huawei.com>, "skraza@cisco.com" <skraza@cisco.com>, "czhou@cisco.com" <czhou@cisco.com>, "lufang@microsoft.com" <lufang@microsoft.com>, "lilianyuan@chinamobile.com" <lilianyuan@chinamobile.com>, "daniel@olddog.co.uk" <daniel@olddog.co.uk>
Thread-Topic: [Need clarification] LDP Multi-Topology Extensions RFC 7307
Thread-Index: AdDhWsyBkUk3t6ieQEC++4CcKOQKAQAUjkNA
Date: Fri, 28 Aug 2015 16:47:52 +0000
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Subject: Re: [mpls] [Need clarification] LDP Multi-Topology Extensions RFC 7307
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Content-Type: text/plain; charset="iso-2022-jp"
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Anil,

>From RFC 5036, section 3.4.3<https://tools.ietf.org/html/rfc5036#section-3.=
4.3> for the  Address List TLV,  it specifies the addresses included in the=
 Address List TLV as below=1B$B!'=1B(B

Addresses
      A list of addresses from the specified Address Family. The
      encoding of the individual addresses depends on the Address
      Family.

So  the new addresses associated with the new address family (MT IPv4 and M=
T Ipv6  defined in RFC7307)  can be used in the  Address List TLV.   I agre=
e with you that It should be clearer if this is explained explicitly simila=
r to FEC TLV  in RFC7307.

Regards,
Quintin

From: Anil Kumar S N (VRP Network BL)
Sent: 2015=1B$BG/=1B(B8=1B$B7n=1B(B28=1B$BF|=1B(B 2:29
To: Quintin zhao; skraza@cisco.com; czhou@cisco.com; lufang@microsoft.com; =
lilianyuan@chinamobile.com; daniel@olddog.co.uk
Cc: mpls-chairs@ietf.org; mpls@ietf.org; Wunan (Eric); Lizhenbin; Rajeshmv;=
 Dhruv Dhody; Fangsheng
Subject: [Need clarification] LDP Multi-Topology Extensions RFC 7307

Hi All,

I need clarification on the LDP MT behavior.

                LDP extension for Multi-Topology explains following :

1.       New Address Families: MT IP

2.       LDP FEC Elements with MT IP AF

3.       LDP MT Capability Advertisement

As per LDP Specification RFC 5036, Address Family filed is carried in FEC T=
LV and Address List TLV.

Nothing about Address List TLV is mentioned in LDP Multi-Topology Extension=
s RFC 7307,
Can we use  =1B$B!H=1B(BNew Address Families: MT IP=1B$B!I=1B(B in Address =
List TLV or not ? (when a interface is bound to Non-default MT)

I feel this can be explained more specifically similar to FEC TLV in LDP Mu=
lti-Topology Extensions RFC 7307.

Appreciate if authors or community members can help to clarify.

Thanks & Regards
Anil S N

=1B$B!H=1B(BBe liberal in what you accept, and conservative in what you sen=
d=1B$B!I=1B(B - Jon Postel



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<p class=3D"MsoNormal">Anil,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">From RFC 5036, section <a name=3D"section-3.4.3"></a=
><a href=3D"https://tools.ietf.org/html/rfc5036#section-3.4.3"><span style=
=3D"color:windowtext">3.4.3</span></a> for the &nbsp;Address List TLV,&nbsp=
; it specifies the addresses included in the Address
 List TLV as below<span lang=3D"ZH-CN" style=3D"font-family:SimSun">=1B$B!'=
=1B(B</span><span lang=3D"ZH-CN">
</span><o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"page-break-before:always"><span style=3D"fo=
nt-size:10.0pt;font-family:&quot;Courier New&quot;">Addresses<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal" style=3D"page-break-before:always"><span style=3D"fo=
nt-size:10.0pt;font-family:&quot;Courier New&quot;">&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp; A list of addresses from the specified Address Family. The<o:p></o:=
p></span></p>
<p class=3D"MsoNormal" style=3D"page-break-before:always"><span style=3D"fo=
nt-size:10.0pt;font-family:&quot;Courier New&quot;">&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp; encoding of the individual addresses depends on the Address<o:p></o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"page-break-before:always"><span style=3D"fo=
nt-size:10.0pt;font-family:&quot;Courier New&quot;">&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp; Family.<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"page-break-before:always"><span style=3D"fo=
nt-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o:p></span=
></p>
<p class=3D"MsoNormal">So &nbsp;the new addresses associated with the new a=
ddress family (MT IPv4 and MT Ipv6 &nbsp;defined in RFC7307) &nbsp;can be u=
sed in the &nbsp;Address List TLV.&nbsp;&nbsp; I agree with you that It sho=
uld be clearer if this is explained explicitly similar to FEC TLV
 &nbsp;in RFC7307.<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">Quintin<o:p></o:p></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> Anil Kum=
ar S N (VRP Network BL)
<br>
<b>Sent:</b> 2015</span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font=
-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;">=1B$BG/=1B(B</s=
pan><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sa=
ns-serif&quot;">8</span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font=
-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;">=1B$B7n=1B(B</s=
pan><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sa=
ns-serif&quot;">28</span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;fon=
t-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;">=1B$BF|=1B(B</=
span><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;s=
ans-serif&quot;">
 2:29<br>
<b>To:</b> Quintin zhao; skraza@cisco.com; czhou@cisco.com; lufang@microsof=
t.com; lilianyuan@chinamobile.com; daniel@olddog.co.uk<br>
<b>Cc:</b> mpls-chairs@ietf.org; mpls@ietf.org; Wunan (Eric); Lizhenbin; Ra=
jeshmv; Dhruv Dhody; Fangsheng<br>
<b>Subject:</b> [Need clarification] LDP Multi-Topology Extensions RFC 7307=
<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Hi All,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I need clarification on the LDP MT behavior.<o:p></o=
:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; LDP extension for Multi-Topology exp=
lains following :<o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style=3D"mso-list:Ignore">1.<span style=3D"font:=
7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>New Address Families: MT IP<o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style=3D"mso-list:Ignore">2.<span style=3D"font:=
7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>LDP FEC Elements with MT IP AF<o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style=3D"mso-list:Ignore">3.<span style=3D"font:=
7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>LDP MT Capability Advertisement<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">As per LDP Specification RFC 5036, Address Family fi=
led is carried in FEC TLV and Address List TLV.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Nothing about Address List TLV is mentioned in LDP M=
ulti-Topology Extensions RFC 7307,
<o:p></o:p></p>
<p class=3D"MsoNormal">Can we use &nbsp;=1B$B!H=1B(BNew Address Families: M=
T IP=1B$B!I=1B(B in Address List TLV or not ? (when a interface is bound to=
 Non-default MT)<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I feel this can be explained more specifically simil=
ar to FEC TLV in LDP Multi-Topology Extensions RFC 7307.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Appreciate if authors or community members can help =
to clarify.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Thanks &amp; Regards<o:p></o:p></p>
<p class=3D"MsoNormal">Anil S N<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">=1B$B!H=1B(BBe liberal in what you accept, and conse=
rvative in what you send=1B$B!I=1B(B - Jon Postel<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</body>
</html>

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From nobody Fri Aug 28 12:52:46 2015
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From: "BRUNGARD, DEBORAH A" <db3546@att.com>
To: "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Update on draft-ietf-mpls-tp-oam-id-mib
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Subject: [mpls] Update on draft-ietf-mpls-tp-oam-id-mib
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Hi,

While this document was being last called, a mibs document in trill was bei=
ng reviewed by the IESG. The Security ADs commented that they needed to upd=
ate the security section. As our MPLS document is more or less a cut and pa=
ste of the trill security section, I've asked the authors to do a review an=
d update our document so as not to repeat the discussion. As it's only a co=
uple of sentences, I've place the document on next week's telechat as the a=
uthors promised a new version by Monday next week.

A heads-up for all of you, there is much more interest to ensure IETF's wor=
k on security is solid. Security sections which simply say "there is no new=
 security concerns" will not pass. Authors need to explain why there are no=
 new security concerns.

Thanks,
Deborah



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<font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt;">
<div>Hi,</div>
<div>&nbsp;</div>
<div>While this document was being last called, a mibs document in trill wa=
s being reviewed by the IESG. The Security ADs commented that they needed t=
o update the security section. As our MPLS document is more or less a cut a=
nd paste of the trill security section,
I&#8217;ve asked the authors to do a review and update our document so as n=
ot to repeat the discussion. As it&#8217;s only a couple of sentences, I&#8=
217;ve place the document on next week&#8217;s telechat as the authors prom=
ised a new version by Monday next week.</div>
<div>&nbsp;</div>
<div>A heads-up for all of you, there is much more interest to ensure IETF&=
#8217;s work on security is solid. Security sections which simply say &#822=
0;there is no new security concerns&#8221; will not pass. Authors need to e=
xplain why there are no new security concerns.</div>
<div>&nbsp;</div>
<div>Thanks,</div>
<div>Deborah</div>
<div>&nbsp;</div>
<div>&nbsp;</div>
</span></font>
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From: Nobo Akiya <nobo.akiya.dev@gmail.com>
To: Dan Frost <frost@mm.st>
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Cc: rtg-dir@ietf.org, mpls <mpls@ietf.org>, "draft-ietf-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" <draft-ietf-mpls-lsp-ping-reply-mode-simple@tools.ietf.org>, rtg-ads@tools.ietf.org
Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-reply-mode-simple-03.txt
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Hi Dan,

Thanks for reviewing this document!

Please see replies in-line with [NOBO].

On Thu, Aug 20, 2015 at 1:49 AM, Dan Frost <frost@mm.st> wrote:

> Hello,
>
> I have been selected as the Routing Directorate reviewer for this draft.
> The Routing Directorate seeks to review all routing or routing-related
> drafts as they pass through IETF last call and IESG review, and
> sometimes on special request. The purpose of the review is to provide
> assistance to the Routing ADs. For more information about the Routing
> Directorate, please see
> =E2=80=8Bhttp://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir
>
> Although these comments are primarily for the use of the Routing ADs, it
> would be helpful if you could consider them along with any other IETF
> Last Call comments that you receive, and strive to resolve them through
> discussion or by updating the draft.
>
> Document: draft-ietf-mpls-lsp-ping-reply-mode-simple-03.txt
> Reviewer: Dan Frost
> Review Date: 19 Aug 2015
> Intended Status: Standards Track
>
> Summary:
>
> I have some minor concerns about this document that I think should be
> resolved before publication.
>
> Comments:
>
> This document addresses an important practical limitation affecting the
> use of LSP Ping in deployed networks today.  It is for the most part
> clearly written and complete, and contains helpful examples.
>
> Major Issues:
>
> No major issues found.
>
> Minor Issues:
>
> - Section 2, last paragraph: "This document adds one Reply Mode value to
> describe the reverse LSP, ...".
>
> This document does not appear to add a Reply Mode value, but rather to
> modify the semantics of the "Reply via Specified Path (5)" Reply Mode,
> as stated at the beginning of Section 3, so this sentence needs
> changing.
>

[NOBO] Thanks for catching that ... left over from previous proposal. I
have updated to:

      This document updates the "Reply via Specified Path (5)" Reply Mode
      to easily indicate the reverse the reverse LSP, and adds one optional
      TLV to describe an ordered list of reply modes.


> - Section 3.1, first paragraph: Suggest adding RFC references for
> associated LSPs, e.g. RFC 5960 for MPLS-TP.
>

[NOBO] Yes that will be helpful to readers, added.


>
> - Section 3, general comment: This document is changing the semantics of
> Reply Mode 5, and in particular changing the case of Mode 5 without a
> Reply Path TLV from invalid to valid.  However, the document does not
> appear to discuss interoperability issues in networks with a mix of
> "old" and "new" LSRs.  This looks like something that should be
> addressed explicitly.
>
>
[NOBO] Good point. I have added a new sub-section to clarify this.

4.1.  Backwards Compatibility with Reply via Specified Path (5) Reply
      Mode

   [RFC7110] has introduced the "Reply via Specified path (5)" Reply
   Mode, and defined that usage of the "Reply via Specified path (5)"
   Reply Mode without also including the "Reply Path TLV" to be invalid.
   This document relaxes this semantic by defining the use of the "Reply
   via Specified path (5)" Reply Mode without the "Reply via Specified
   path (5)" to indicate the reverse LSP.  In other words, what was
   considered invalid is now valid.  If the initiator LSR, which sent an
   MPLS echo request message with the "Reply via Specified path (5)"
   Reply Mode but without including the "Reply Path TLV", receives back
   an MPLS echo reply message with the return code being "Malformed echo
   request received", then the initiator LSR SHOULD assume that the
   responder LSR does not support the mechanism defined in this document.



> - Section 3.1, last paragraph: This paragraph is very confusing and
> either needs to be deleted or completely rewritten.  If, as it appears,
> it is not changing existing requirements for IP addressing of LSP Ping
> packets per RFCs 4379 and 7110, it should just be deleted.
>
>
[NOBO] I believe this text was suggested by someone to be added, but since
this is already described in RFC 7110, I will delete it as suggested.


> - Section 4.1, preference ordering of reply options: The document
> specifies that reply paths are to be preferred according to the order in
> which they appear in the Reply Mode Order TLV.  However, it's not clear
> from this document and RFC 7110 what the order semantics are of
> including a Reply Path TLV with multiple sub-TLVs.  For instance, in
> Section 4.1.1's example, FEC X and FEC Y are listed as different return
> paths.  If they are different, what is their preference ordering and
> where is this defined?
>

[NOBO] That should have been clarified in the RFC 7110, but unfortunately
not. Folks, including myself, assumed that selection is done via walking
the Sub-TLVs from "top to bottom". Do you suggest that we attempt to
clarify this in this document?


> - General comment: It may be valuable for the authors to include a
> Manageability Considerations or similar section to provide guidance to
> implementors on configuration options, defaults, etc., particularly
> given the operational difficulties that led to this document in the
> first place.
>

[NOBO] Good point. I have a Manageability Considerations section.

   Section 2 described the problems which increases the complexity with
   respect to operations and implementations.  In order to to simplify
   operations and to allow for the LSP Ping/Traceroute to function
   efficiently whilst preserving the code simplicity, it is RECOMMENDED
   that implementations allow devices to have configuration options to
   set operator preferred Reply Modes.  For example:

   o  For those operators who are more interested in MPLS echo reply
      packets reaching back to the initiator LSR:

      1.  Reply via an IPv4/IPv6 UDP packet (2)

      2.  Reply via application level control channel (4)

      3.  Reply via Specified Path (5)

   o  For those operators who are more interested in MPLS echo reply
      packets testing the paths related to the forward LSP:

      1.  Reply via Specified Path (5)

      2.  Reply via application level control channel (4)

      3.  Reply via an IPv4/IPv6 UDP packet (2)



>
> Nits:
>
> There are a lot (too many to list here) of minor English grammar
> problems, such as missing articles, throughout the text.  I would
> suggest the editors do a grammatical review pass to clean these up as
> much as possible before the RFC Editor stage.
>

[NOBO] I will have one of the native English speaker do a cleanup.

Again, thanks for reviewing the document Dan. Please let me know what you
would like for the Sub-TLV preference within the Reply Path TLV ... which
is really an issue with RFC 7110.

Regards,
Nobo


>
> Cheers,
> -d
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>

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<div dir=3D"ltr">Hi Dan,<div><br></div><div>Thanks for reviewing this docum=
ent!</div><div><br></div><div>Please see replies in-line with [NOBO].</div>=
<div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Thu, Aug =
20, 2015 at 1:49 AM, Dan Frost <span dir=3D"ltr">&lt;<a href=3D"mailto:fros=
t@mm.st" target=3D"_blank">frost@mm.st</a>&gt;</span> wrote:<br><blockquote=
 class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:=
1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left=
:1ex">Hello,<br>
<br>
I have been selected as the Routing Directorate reviewer for this draft.<br=
>
The Routing Directorate seeks to review all routing or routing-related<br>
drafts as they pass through IETF last call and IESG review, and<br>
sometimes on special request. The purpose of the review is to provide<br>
assistance to the Routing ADs. For more information about the Routing<br>
Directorate, please see<br>
=E2=80=8B<a href=3D"http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir" r=
el=3D"noreferrer" target=3D"_blank">http://trac.tools.ietf.org/area/rtg/tra=
c/wiki/RtgDir</a><br>
<br>
Although these comments are primarily for the use of the Routing ADs, it<br=
>
would be helpful if you could consider them along with any other IETF<br>
Last Call comments that you receive, and strive to resolve them through<br>
discussion or by updating the draft.<br>
<br>
Document: draft-ietf-mpls-lsp-ping-reply-mode-simple-03.txt<br>
Reviewer: Dan Frost<br>
Review Date: 19 Aug 2015<br>
Intended Status: Standards Track<br>
<br>
Summary:<br>
<br>
I have some minor concerns about this document that I think should be<br>
resolved before publication.<br>
<br>
Comments:<br>
<br>
This document addresses an important practical limitation affecting the<br>
use of LSP Ping in deployed networks today.=C2=A0 It is for the most part<b=
r>
clearly written and complete, and contains helpful examples.<br>
<br>
Major Issues:<br>
<br>
No major issues found.<br>
<br>
Minor Issues:<br>
<br>
- Section 2, last paragraph: &quot;This document adds one Reply Mode value =
to<br>
describe the reverse LSP, ...&quot;.<br>
<br>
This document does not appear to add a Reply Mode value, but rather to<br>
modify the semantics of the &quot;Reply via Specified Path (5)&quot; Reply =
Mode,<br>
as stated at the beginning of Section 3, so this sentence needs<br>
changing.<br></blockquote><div><br></div><div>[NOBO] Thanks for catching th=
at ... left over from previous proposal. I have updated to:</div><div><br><=
/div><div>=C2=A0 =C2=A0 =C2=A0 This document updates the &quot;Reply via Sp=
ecified Path (5)&quot; Reply Mode</div><div>=C2=A0 =C2=A0 =C2=A0 to easily =
indicate the reverse the reverse LSP, and adds one optional</div><div>=C2=
=A0 =C2=A0 =C2=A0 TLV to describe an ordered list of reply modes.=C2=A0</di=
v><div><br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px =
0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-l=
eft-style:solid;padding-left:1ex">
<br>
- Section 3.1, first paragraph: Suggest adding RFC references for<br>
associated LSPs, e.g. RFC 5960 for MPLS-TP.<br></blockquote><div><br></div>=
<div>[NOBO] Yes that will be helpful to readers, added.</div><div>=C2=A0</d=
iv><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bord=
er-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:soli=
d;padding-left:1ex">
<br>
- Section 3, general comment: This document is changing the semantics of<br=
>
Reply Mode 5, and in particular changing the case of Mode 5 without a<br>
Reply Path TLV from invalid to valid.=C2=A0 However, the document does not<=
br>
appear to discuss interoperability issues in networks with a mix of<br>
&quot;old&quot; and &quot;new&quot; LSRs.=C2=A0 This looks like something t=
hat should be<br>
addressed explicitly.<br>
<br></blockquote><div><br></div><div>[NOBO] Good point. I have added a new =
sub-section to clarify this.</div><div><br></div><pre style=3D"color:rgb(0,=
0,0);word-wrap:break-word;white-space:pre-wrap">4.1.  Backwards Compatibili=
ty with Reply via Specified Path (5) Reply
      Mode

   [RFC7110] has introduced the &quot;Reply via Specified path (5)&quot; Re=
ply
   Mode, and defined that usage of the &quot;Reply via Specified path (5)&q=
uot;
   Reply Mode without also including the &quot;Reply Path TLV&quot; to be i=
nvalid.
   This document relaxes this semantic by defining the use of the &quot;Rep=
ly
   via Specified path (5)&quot; Reply Mode without the &quot;Reply via Spec=
ified
   path (5)&quot; to indicate the reverse LSP.  In other words, what was
   considered invalid is now valid.  If the initiator LSR, which sent an
   MPLS echo request message with the &quot;Reply via Specified path (5)&qu=
ot;
   Reply Mode but without including the &quot;Reply Path TLV&quot;, receive=
s back
   an MPLS echo reply message with the return code being &quot;Malformed ec=
ho
   request received&quot;, then the initiator LSR SHOULD assume that the
   responder LSR does not support the mechanism defined in this=C2=A0<span =
style=3D"font-family:arial,sans-serif">document.</span></pre><div>=C2=A0</d=
iv><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bord=
er-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:soli=
d;padding-left:1ex">
- Section 3.1, last paragraph: This paragraph is very confusing and<br>
either needs to be deleted or completely rewritten.=C2=A0 If, as it appears=
,<br>
it is not changing existing requirements for IP addressing of LSP Ping<br>
packets per RFCs 4379 and 7110, it should just be deleted.<br>
<br></blockquote><div><br></div><div>[NOBO] I believe this text was suggest=
ed by someone to be added, but since this is already described in RFC 7110,=
 I will delete it as suggested.</div><div>=C2=A0</div><blockquote class=3D"=
gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border=
-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
- Section 4.1, preference ordering of reply options: The document<br>
specifies that reply paths are to be preferred according to the order in<br=
>
which they appear in the Reply Mode Order TLV.=C2=A0 However, it&#39;s not =
clear<br>
from this document and RFC 7110 what the order semantics are of<br>
including a Reply Path TLV with multiple sub-TLVs.=C2=A0 For instance, in<b=
r>
Section 4.1.1&#39;s example, FEC X and FEC Y are listed as different return=
<br>
paths.=C2=A0 If they are different, what is their preference ordering and<b=
r>
where is this defined?<br></blockquote><div><br></div><div>[NOBO] That shou=
ld have been clarified in the RFC 7110, but unfortunately not. Folks, inclu=
ding myself, assumed that selection is done via walking the Sub-TLVs from &=
quot;top to bottom&quot;. Do you suggest that we attempt to clarify this in=
 this document?</div><div><br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(20=
4,204,204);border-left-style:solid;padding-left:1ex">
<br>
- General comment: It may be valuable for the authors to include a<br>
Manageability Considerations or similar section to provide guidance to<br>
implementors on configuration options, defaults, etc., particularly<br>
given the operational difficulties that led to this document in the<br>
first place.<br></blockquote><div><br></div><div>[NOBO] Good point. I have =
a Manageability Considerations section.</div><div><br></div><div><pre style=
=3D"color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap">   Section =
2 described the problems which increases the complexity with
   respect to operations and implementations.  In order to to simplify
   operations and to allow for the LSP Ping/Traceroute to function
   efficiently whilst preserving the code simplicity, it is RECOMMENDED
   that implementations allow devices to have configuration options to
   set operator preferred Reply Modes.  For example:

   o  For those operators who are more interested in MPLS echo reply
      packets reaching back to the initiator LSR:

      1.  Reply via an IPv4/IPv6 UDP packet (2)

      2.  Reply via application level control channel (4)

      3.  Reply via Specified Path (5)

   o  For those operators who are more interested in MPLS echo reply
      packets testing the paths related to the forward LSP:

      1.  Reply via Specified Path (5)

      2.  Reply via application level control channel (4)

      3.  Reply via an IPv4/IPv6 UDP packet (2)</pre></div><div>=C2=A0</div=
><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border=
-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;=
padding-left:1ex">
<br>
Nits:<br>
<br>
There are a lot (too many to list here) of minor English grammar<br>
problems, such as missing articles, throughout the text.=C2=A0 I would<br>
suggest the editors do a grammatical review pass to clean these up as<br>
much as possible before the RFC Editor stage.<br></blockquote><div><br></di=
v><div>[NOBO] I will have one of the native English speaker do a cleanup.</=
div><div><br></div><div>Again, thanks for reviewing the document Dan. Pleas=
e let me know what you would like for the Sub-TLV preference within the Rep=
ly Path TLV ... which is really an issue with RFC 7110.</div><div><br></div=
><div>Regards,</div><div>Nobo</div><div>=C2=A0</div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-l=
eft-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<br>
Cheers,<br>
-d<br>
<br>
_______________________________________________<br>
mpls mailing list<br>
<a href=3D"mailto:mpls@ietf.org">mpls@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/mpls" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/mpls</a><br>
</blockquote></div><br></div></div></div>

--089e0158cb821c8a81051e82fa8e--


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From: Martin Horneffer <maho@nic.dtag.de>
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Subject: Re: [mpls] working group adoption call for draft-filsfils-spring-segment-routing-ldp-interop
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As a co-author I support the adoption of this draft.

Also I am not aware of any IPR touched.

Best regards, Martin


Am 22.07.15 um 15:17 schrieb John G.Scudder:
> Dear WG,
>
> As we discussed at our meeting yesterday, working group adoption has been requested for draft-filsfils-spring-segment-routing-ldp-interop. Please reply to the list with your comments, including although not limited to whether or not you support adoption. Non-authors are especially encouraged to comment.
>
> In consideration of the fact that a number of WG calls are going on concurrently, we will end the call on August 31, 2015.
>
> Authors, please indicate whether you are aware of any relevant IPR and if so, whether it has been disclosed. Also, the length of the author list for this document greatly exceeds the maximum recommended. Assuming the document is adopted, the authors should be prepared to correct this when submitting as a WG document, ideally by reducing the list to simply the active editor(s) and making use of the "contributors" section for the full list.
>
> Thanks,
>
> --Bruno and John
>
> P.S.: Cc MPLS owing to the LDP connection. Please respect the reply-to.
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>


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Subject: Re: [mpls] working group last call for draft-ietf-spring-segment-routing
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Support.

Martin

Am 22.07.15 um 15:12 schrieb John G. Scudder:
> Dear SPRING WG (and cc MPLS, OSPF, IS-IS, 6MAN, please include SPRING in replies per the reply-to):
>
> As we discussed at the SPRING meeting yesterday, working group last call has been requested for draft-ietf-spring-segment-routing. Please reply to the list with your comments, including although not limited to whether or not you support advancing the document to RFC. Non-authors are especially encouraged to comment.
>
> In consideration of the fact that a number of WG calls are going on concurrently, we will end the call on August 31, 2015.
>
> Authors, please indicate whether you are aware of any relevant IPR and if so, whether it has been disclosed. (Please do this even if you've done it before, thanks for your help.)
>
> Thanks,
>
> --Bruno and John
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>


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Subject: Re: [mpls] PALS WG Last Call for draft-ietf-pals-endpoint-fast-protection
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This ends the WG last call for draft-ietf-pals-endpoint-fast-protection.

Authors, please update the draft to address the received comments.

Thanks,
Andy

On Tue, Aug 11, 2015 at 7:52 AM, Andrew G. Malis <agmalis@gmail.com> wrote:

> This is the PALS Working Group Last Call for draft-ietf-pals-endpoint-fast
> -protection (formerly draft-ietf-pwe3-endpoint-fast-protection). You can
> find the draft at:
>
> https://tools.ietf.org/html/draft-ietf-pals-endpoint-fast-protection-00
>
> This draft has already had a previous last call in the PWE3 WG. That last
> call resulted in a number of comments and resulting improvements. As a
> result, the document shepherd, Matthew Bocci, has recommended that we have
> another last call for the PALS version.
>
> Since this draft specifies some extensions to LDP (see Section 6), we are
> copying this last call announcement to the MPLS WG as well. However, we
> request that all last call comments be posted to the PALS WG list.
>
> This last call will run for two weeks, ending on August 25.
>
> Given the nature of the draft, we would appreciate even just responses
> that you've read it and support publication, even if you don't have any
> specific comments.
>
> Thanks,
> Andy and Stewart
>
>

--f46d043c7e0c3182d0051e9a3b6b
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<div dir=3D"ltr">This ends the WG last call for draft-ietf-pals-endpoint-fa=
st-protection.<div><br></div><div>Authors, please update the draft to addre=
ss the received comments.</div><div><br></div><div>Thanks,</div><div>Andy</=
div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Tue,=
 Aug 11, 2015 at 7:52 AM, Andrew G. Malis <span dir=3D"ltr">&lt;<a href=3D"=
mailto:agmalis@gmail.com" target=3D"_blank">agmalis@gmail.com</a>&gt;</span=
> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bo=
rder-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">This is the PAL=
S Working Group Last Call for=C2=A0<span style=3D"font-size:13px">draft</sp=
an><span style=3D"font-size:13px">-</span><span style=3D"font-size:13px">ie=
tf</span><span style=3D"font-size:13px">-</span><span style=3D"font-size:13=
px">pals</span><span style=3D"font-size:13px">-</span><span style=3D"font-s=
ize:13px">endpoint</span><span style=3D"font-size:13px">-</span><span style=
=3D"font-size:13px">fast</span><span style=3D"font-size:13px">-</span><span=
 style=3D"font-size:13px">protection</span><span style=3D"font-size:13px">=
=C2=A0(formerly=C2=A0</span><span style=3D"font-size:13px">draft</span><spa=
n style=3D"font-size:13px">-</span><span style=3D"font-size:13px">ietf</spa=
n><span style=3D"font-size:13px">-pwe3-</span><span style=3D"font-size:13px=
">endpoint</span><span style=3D"font-size:13px">-</span><span style=3D"font=
-size:13px">fast</span><span style=3D"font-size:13px">-</span><span style=
=3D"font-size:13px">protection</span><span style=3D"font-size:13px">). You =
can find the draft at:</span><div><span style=3D"font-size:13px"><br></span=
></div><div><a href=3D"https://tools.ietf.org/html/draft-ietf-pals-endpoint=
-fast-protection-00" target=3D"_blank">https://tools.ietf.org/html/draft-ie=
tf-pals-endpoint-fast-protection-00</a><br></div><div><br></div><div>This d=
raft has already had a previous last call in the PWE3 WG. That last call re=
sulted in a number of comments and resulting improvements. As a result, the=
 document shepherd, Matthew Bocci, has recommended that we have another las=
t call for the PALS version.</div><div><br></div><div>Since this draft spec=
ifies some extensions to LDP (see Section 6), we are copying this last call=
 announcement to the MPLS WG as well. However, we request that all last cal=
l comments be posted to the PALS WG list.</div><div><br></div><div>This las=
t call will run for two weeks, ending on August 25.</div><div><br></div><di=
v>Given the nature of the draft, we would appreciate even just responses th=
at you&#39;ve read it and support publication, even if you don&#39;t have a=
ny specific comments.</div><div><br></div><div>Thanks,</div><div>Andy and S=
tewart</div><div><br></div></div>
</blockquote></div><br></div>

--f46d043c7e0c3182d0051e9a3b6b--


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From: Ross Callon <rcallon@juniper.net>
To: "mpls@ietf.org" <mpls@ietf.org>, Greg Mirsky <gregory.mirsky@ericsson.com>, Jeff Tantsura <jeff.tantsura@ericsson.com>, Ilya Varlashkin <ilya@nobulus.com>, Mach Chen <mach.chen@huawei.com>
Thread-Topic: Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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Date: Mon, 31 Aug 2015 18:03:10 +0000
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Subject: Re: [mpls] Poll for Adoption draft-mirsky-mpls-bfd-directed-04
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--_000_BY1PR0501MB14309EA4781106C85EB2B9D9A56B0BY1PR0501MB1430_
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This poll has ended, and the document has been accepted as an MPLS working =
group document.

Authors: Please resubmit this draft as: draft-ietf-mpls-bfd-directed-00, wi=
th no changes other than the internet draft name and date.

Once this is done you can feel free to handle any comments received.

Thanks, Ross
(as MPLS WG chair)

From: Ross Callon [mailto:rcallon@juniper.net]
Sent: Thursday, August 13, 2015 3:24 PM
To: mpls@ietf.org
Cc: mpls-chairs@ietf.org
Subject: Poll for Adoption draft-mirsky-mpls-bfd-directed-04

This is to start a two week poll on adopting draft-mirsky-mpls-bfd-directed=
-04
as an MPLS working group document.

Please send your comments (support/not support) to the mpls working group
mailing list (mpls@ietf.org<mailto:mpls@ietf.org>).

This poll for adoption will end Friday August 28, 2015.

Thanks, Ross


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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">This poll has ended, and =
the document has been accepted as an MPLS working group document.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Authors: Please resubmit =
this draft as: draft-ietf-mpls-bfd-directed-00, with no changes other than =
the internet draft name and date.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Once this is done you can=
 feel free to handle any comments received.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Thanks, Ross
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">(as MPLS WG chair)<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> Ross Cal=
lon [mailto:rcallon@juniper.net]
<br>
<b>Sent:</b> Thursday, August 13, 2015 3:24 PM<br>
<b>To:</b> mpls@ietf.org<br>
<b>Cc:</b> mpls-chairs@ietf.org<br>
<b>Subject:</b> Poll for Adoption draft-mirsky-mpls-bfd-directed-04<o:p></o=
:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This is to start a two week poll on ado=
pting draft-mirsky-mpls-bfd-directed-04<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">as an MPLS working group document.<o:p>=
</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Please send your comments (support/not =
support) to the mpls working group
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">mailing list (<a href=3D"mailto:mpls@ie=
tf.org"><span style=3D"color:windowtext">mpls@ietf.org</span></a>).<o:p></o=
:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">This poll for adoption will end Friday =
August 28, 2015.
<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Thanks, Ross<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">&nbsp;<o:p></o:p></span></p>
</div>
</div>
</body>
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