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To: Robert Varga <nite@hq.sk>, Ina Minei <inaminei@google.com>
References: <56210C68.1080904@orange.com> <CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com> <569CFA97.2080209@hq.sk>
From: Julien Meuric <julien.meuric@orange.com>
Organization: Orange
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Date: Mon, 1 Feb 2016 14:36:01 +0100
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Cc: draft-ietf-pce-stateful-pce@ietf.org, "pce@ietf.org" <pce@ietf.org>
Subject: Re: [Pce] Chair's Review of draft-ietf-pce-stateful-pce-11
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    Hi Robert.<br>
    <br>
    Thank you for your help to move this forward. Please find my
    comments below [JM]. Note that a couple of your answers are not
    aligned with the proposed resolutions currently included the I-D: I
    was fine with these, therefore please make sure you are so that I
    can send to the IESG.<br>
    <br>
    Julien<br>
    <br>
    <br>
    <div class="moz-cite-prefix">Jan. 18, 2016 - <a class="moz-txt-link-abbreviated" href="mailto:nite@hq.sk">nite@hq.sk</a>:<br>
    </div>
    <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">
      <meta http-equiv="Content-Type" content="text/html;
        charset=windows-1252">
      <div class="moz-cite-prefix">Hello,<br>
        <br>
        please find my comments on the pending items.<br>
        <br>
        On 10/26/2015 10:10 PM, Ina Minei wrote:<br>
      </div>
      <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
        type="cite">
        <div dir="ltr">Julien, 
          <div><br>
          </div>
          <div>Thank you for the detailed review, please find answers
            inline below ###.  I have incorporated the overwhelming
            majority of the comments, explained the reason for not
            incorporating a couple of them, and am still working with
            the co-authors on a couple of items marked "pending", which
            we will close on shortly.</div>
          <div><br>
          </div>
          <div>Two questions and one ask</div>
          1. Forward references to SRP object and SRP-ID - there are
          several in the comments, though the relevant section is always
          mentioned. How should such forward references be addressed?<br>
          2. Section 7 - s/defined in this document/defined in that
          (aforementioned) document/<br>
          The comment was not clear to me. The intention is for the
          flags to be set as explained for the new objects we are
          defining here, can you clarify the comment?
          <div>3. Can you please review the comments that were not
            incorporated and let us know if you agree?<br>
            <div class="gmail_extra"><br>
            </div>
            <div class="gmail_extra">Thank you, </div>
            <div class="gmail_extra"><br>
            </div>
            <div class="gmail_extra">Ina </div>
            <div class="gmail_extra"><br>
              <div class="gmail_quote">On Fri, Oct 16, 2015 at 7:40 AM,
                Julien Meuric <span dir="ltr">&lt;<a
                    moz-do-not-send="true"
                    class="moz-txt-link-abbreviated"
                    href="mailto:julien.meuric@orange.com"><a class="moz-txt-link-abbreviated" href="mailto:julien.meuric@orange.com">julien.meuric@orange.com</a></a>&gt;</span>
                wrote:<br>
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Dear

                  authors,<br>
                  <br>
                  To prepare the upcoming move to the IESG, please find
                  below my review of the aforementioned I-D (at last!).<br>
                  <br>
                  _Summary_<br>
                  <br>
                  Main qualities:<br>
                  - core specification is clear;<br>
                  - wording is smooth, with very few typos;<br>
                  - the manageability and security sections have been
                  included with relevant text.<br>
                  Main issues to point out:<br>
                  - RFC 2119 keywords (picky me, but so is the IESG: ask
                  JP about 5440);<br>
                  - a few corner/error cases;<br>
                  - consistency with existing RFCs (5440, 5886).<br>
                  I also take the opportunity to remind the WG that
                  including codepoint values from existing registries
                  before allocation by the IANA (which can be requested
                  early) is a very bad idea, whatever the WG.<br>
                  <br>
                  _Detailed Comments_</blockquote>
                <br>
              </div>
            </div>
          </div>
        </div>
      </blockquote>
      <br>
      [snip]<br>
      <br>
      <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
        type="cite">
        <div dir="ltr">
          <div>
            <div class="gmail_extra">
              <div class="gmail_quote">
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                  - s/include an empty ERO/include an empty RRO/ [Along
                  with RFC 5440 (section 7.10), the object sent by a PCC
                  to report to a PCE is an RRO: let us keep it
                  consistent.]</blockquote>
                <div>### XXX Pending</div>
              </div>
            </div>
          </div>
        </div>
      </blockquote>
      <br>
      In this case PCRpt differs from PCReq. The PCE needs to know the
      ERO object for each LSP, as may have been pushed by a different
      PCE. Reporting RRO is not sufficient, as that contains the
      effective LSP path, e.g. with loose hops expanded by the PCC. That
      is why ERO is a mandatory object in PCRpt (as part of
      intended_path), hence we specify an empty object for the
      end-of-sync marker. <br>
    </blockquote>
    [JM] OK, this is addressed in the current version.<br>
     
    <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">
      <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
        type="cite">
        <div dir="ltr">
          <div>
            <div class="gmail_extra">
              <div class="gmail_quote">
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                  - Avoiding "positive acknowledgements for properly
                  received synchronization messages" has scalability
                  benefits in normal situations, but the PCC is blind
                  and may keep on sending PCRpt to dead processes behind
                  up PCEP sessions. Have you consider acknowledgement,
                  possibly using a compression mechanism like the one
                  defined later in the I-D?<br>
                </blockquote>
                <div>### XXX Pending </div>
              </div>
            </div>
          </div>
        </div>
      </blockquote>
      <br>
      The association between a PCEP session and PCE processes is
      something which I would consider an internal PCE detail, and it
      should be covered by the next sentence (e.g. raise PCErr 20/1).<br>
    </blockquote>
    [JM] I still feel unwise to consider a lack of feedback as a proof
    of synchronization. What if, from time to time, a PCRpt gets lost? I
    do not think acknowledgement would be a pain to add, but its lack
    can easily turn to that in operational situations.<br>
    <br>
    <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">
      <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
        type="cite">
        <div dir="ltr">
          <div>
            <div class="gmail_extra">
              <div class="gmail_quote">
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                  - When mentioning errors, adding a sentence reminding
                  that RFC 5440 already defines a set of applicable
                  error codes would be valuable.<br>
                </blockquote>
                <div>### XXX Pending</div>
              </div>
            </div>
          </div>
        </div>
      </blockquote>
      <br>
      I agree, this is an extension, so implementations should reuse
      RFC5440 errors when appropriate.<br>
    </blockquote>
    [JM] OK, aligned with the I-D.<br>
    <br>
    <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">
      <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
        type="cite">
        <div dir="ltr">
          <div>
            <div class="gmail_extra">
              <div class="gmail_quote">
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                  - In section 5.5.1, it is not clear if an empty LSP
                  Update Request with a Delegate flag to 1 is an
                  acceptable way for a PCE to send a delegation
                  acknowledgement: to be clarified. <br>
                </blockquote>
                <div>### XXX Pending</div>
              </div>
            </div>
          </div>
        </div>
      </blockquote>
      <br>
      It is not, as that would be seen as a request to modify the LSP
      setup to empty. Such an acknowledgement would have to include full
      configuration as previously reported -- which would be handled as
      a normal update.<br>
    </blockquote>
    [JM] The I-Ds says the contrary: to be checked. Note that empty
    could be loose, which seems possible to handle at the signaling
    level.<br>
    <br>
    <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">
      <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
        type="cite">
        <div dir="ltr">
          <div>
            <div class="gmail_extra">
              <div class="gmail_quote">
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                  - s/SHOULD return the LSP delegation/MUST return the
                  LSP delegation/<br>
                </blockquote>
                <div>### This should remain SHOULD. The nice way to do
                  it is to return it explicitly, but it may choose to
                  wait until the next update and return the delegation
                  then by not setting the delegate flag. </div>
                <div> </div>
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                  - In section 5.5.3, assuming an LSP was delegated,
                  does the reception by the PCC of a non empty LSP
                  Update Request with a Delegate Flag to 0 trigger an
                  error?<br>
                </blockquote>
                <div>### XXX Pending</div>
              </div>
            </div>
          </div>
        </div>
      </blockquote>
      <br>
      It could, if we want to be strict about it, but it does not really
      have an impact on protocol operation: delegate=0 should kick in
      first, which means the PCC can safely discard any extra payload.<br>
    </blockquote>
    [JM] OK, seems aligned to the I-D.<br>
    <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">  
      <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
        type="cite">
        <div dir="ltr">
          <div>
            <div class="gmail_extra">
              <div class="gmail_quote">
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                  -
                  s/&lt;ERO&gt;&lt;attribute-list&gt;/&lt;RRO&gt;&lt;attribute-list&gt;/
                  [Per RFC 5440, a report from PCC to PCE is RRO.]<br>
                </blockquote>
                <div>### XXX Pending</div>
              </div>
            </div>
          </div>
        </div>
      </blockquote>
      <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
        type="cite">
        <div dir="ltr">
          <div>
            <div class="gmail_extra">
              <div class="gmail_quote">
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                  - The use of the optional xRO is mentioned, but its
                  relationship with the RRO (formerly ERO) is not clear.
                  I suspect some assumptions are made on the way the
                  ERO/RRO are populated; RFC 5440 only says ERO for
                  PCE-&gt;PCC and RRO for PCC-&gt;PCE.<br>
                </blockquote>
                <div>### XXX Pending</div>
              </div>
            </div>
          </div>
        </div>
      </blockquote>
      <br>
      The idea here is that ERO contains the path as pushed by the PCE.
      It may contain loose hops, which the PCC can expand as it sees
      fit. The RRO contains the effective path the LSP is currently
      taking, e.g. any loose hops are resolved. Since a backup PCE is
      not required to share state with the primary PCE, and there is no
      way to derive ERO from RRO, the PCEP session needs to communicate
      both, so a backup PCE can pick up the previous PCE's policy
      decision as well as the current LSP path.<br>
    </blockquote>
    [JM] The current I-D addresses my concerns on this, thanks for the
    clarification.<br>
     
    <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">
      <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
        type="cite">
        <div dir="ltr">
          <div>
            <div class="gmail_extra">
              <div class="gmail_quote">
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                  - The behavior associated to the resource limit per
                  PCC rather looks like a Notifcation than an Error
                  (e.g., in RFC 5440, cancelling a set of pending
                  requests relies on PCNtf). Please consider the use of
                  Notification instead of Error here.<br>
                </blockquote>
                <div>### XXX Pending</div>
              </div>
            </div>
          </div>
        </div>
      </blockquote>
      <br>
      Current wording is based on the assumption that the PCE has to
      have a consistent point-in-time view of the PCC's state. In this
      regard a PCRpt of a new LSP which exceeds PCE
      implementation-internal limit on the number of LSPs it supports
      would break that assumption, hence we chose PCErr. This makes it
      consistent with what would happen if that LSP is reported during
      initial state resynchronization.<br>
    </blockquote>
    [JM] Please note that the current I-D uses "PCNtf", and I am fine
    with that resolution. I was not questioning the expected behavior,
    which must remain. I was just suggesting the expected type of
    message to be consistent with RFC 5440: the PCC has not made
    anything wrong, it is informed that the PCE no more accepts its
    reports similarly to the way a PCE is able to tell about overload or
    cancel some requests.<br>
    <br>
    <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">
      <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
        type="cite">
        <div dir="ltr">
          <div>
            <div class="gmail_extra">
              <div class="gmail_quote">
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                  - It would be nice to elaborate on the reason why the
                  SYMBOLIC-PATH-NAME MUST be included and not SHOULD.<br>
                  - I do not see why SYMBOLIC-PATH-NAME may be included
                  in SRP Object: defining the LSP Object as its single
                  place seems enough and much simpler.<br>
                </blockquote>
                <div><br>
                </div>
                <div>### XXX  Pending</div>
              </div>
            </div>
          </div>
        </div>
      </blockquote>
      <br>
      The MUST is there to maintain a single global identifier for the
      LSP. PLSP-ID is then used as a shorthand. I do not recollect the
      exact reasoning as to why the TLV can be in SRP, as the placement
      and semantics of that TLV has changed quite a bit over the past
      couple of years. If I were to venture a guess, I think it was
      retrofitted to allow the PCE to update the symbolic path name.<br>
    </blockquote>
    [JM] OK about the "MUST". About SYMBOLIC-PATH-NAME in SRP, please
    choose: either it is legacy and must be dropped (current version),
    or there is a reason and it must be documented in the I-D.<br>
    <br>
    <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite"> Thanks,<br>
      Robert<br>
      <br>
    </blockquote>
    Thank you,<br>
    <br>
    Julien<br>
    <br>
  </body>
</html>


From nobody Mon Feb  1 10:01:47 2016
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From: "Jan Medved (jmedved)" <jmedved@cisco.com>
To: Julien Meuric <julien.meuric@orange.com>, Robert Varga <nite@hq.sk>, "Ina Minei" <inaminei@google.com>
Thread-Topic: [Pce] Chair's Review of draft-ietf-pce-stateful-pce-11
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References: <56210C68.1080904@orange.com> <CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com> <569CFA97.2080209@hq.sk> <56AF5F41.9000903@orange.com>
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Subject: Re: [Pce] Chair's Review of draft-ietf-pce-stateful-pce-11
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Hi Julien

From: Julien Meuric <julien.meuric@orange.com<mailto:julien.meuric@orange.c=
om>>
Organization: Orange
Date: Monday, February 1, 2016 at 5:36 AM
To: Robert Varga <nite@hq.sk<mailto:nite@hq.sk>>, Ina Minei <inaminei@googl=
e.com<mailto:inaminei@google.com>>
Cc: "draft-ietf-pce-stateful-pce@ietf.org<mailto:draft-ietf-pce-stateful-pc=
e@ietf.org>" <draft-ietf-pce-stateful-pce@ietf.org<mailto:draft-ietf-pce-st=
ateful-pce@ietf.org>>, "pce@ietf.org<mailto:pce@ietf.org>" <pce@ietf.org<ma=
ilto:pce@ietf.org>>
Subject: Re: [Pce] Chair's Review of draft-ietf-pce-stateful-pce-11

Hi Robert.

Thank you for your help to move this forward. Please find my comments below=
 [JM]. Note that a couple of your answers are not aligned with the proposed=
 resolutions currently included the I-D: I was fine with these, therefore p=
lease make sure you are so that I can send to the IESG.

Julien


Jan. 18, 2016 - nite@hq.sk<mailto:nite@hq.sk>:
Hello,

please find my comments on the pending items.
[snip]

[JM] I still feel unwise to consider a lack of feedback as a proof of synch=
ronization. What if, from time to time, a PCRpt gets lost? I do not think a=
cknowledgement would be a pain to add, but its lack can easily turn to that=
 in operational situations.

PCEP runs on top of TCP, so delivery of all messages is guaranteed by the u=
nderlying transport. The PCE itself can loose a message, but if it does, it=
 will typically have a bigger problem than just lost messages ;-)

Another reason that we did not put in an explicit ack is stay in the spirit=
 of the original RFC5440, which is modeled after BGP. BGP also does not hav=
e acks for any of its messages - it just assumes that the transport will ta=
ke care of the guaranteed delivery.


Thanks,
Jan



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e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>Hi Julien</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:=
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<span style=3D"font-weight:bold">From: </span>Julien Meuric &lt;<a href=3D"=
mailto:julien.meuric@orange.com">julien.meuric@orange.com</a>&gt;<br>
<span style=3D"font-weight:bold">Organization: </span>Orange<br>
<span style=3D"font-weight:bold">Date: </span>Monday, February 1, 2016 at 5=
:36 AM<br>
<span style=3D"font-weight:bold">To: </span>Robert Varga &lt;<a href=3D"mai=
lto:nite@hq.sk">nite@hq.sk</a>&gt;, Ina Minei &lt;<a href=3D"mailto:inamine=
i@google.com">inaminei@google.com</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:draft-i=
etf-pce-stateful-pce@ietf.org">draft-ietf-pce-stateful-pce@ietf.org</a>&quo=
t; &lt;<a href=3D"mailto:draft-ietf-pce-stateful-pce@ietf.org">draft-ietf-p=
ce-stateful-pce@ietf.org</a>&gt;, &quot;<a href=3D"mailto:pce@ietf.org">pce=
@ietf.org</a>&quot;
 &lt;<a href=3D"mailto:pce@ietf.org">pce@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: [Pce] Chair's Review o=
f draft-ietf-pce-stateful-pce-11<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 bgcolor=3D"#FFFFFF" text=3D"#000000">Hi Robert.<br>
<br>
Thank you for your help to move this forward. Please find my comments below=
 [JM]. Note that a couple of your answers are not aligned with the proposed=
 resolutions currently included the I-D: I was fine with these, therefore p=
lease make sure you are so that
 I can send to the IESG.<br>
<br>
Julien<br>
<br>
<br>
<div class=3D"moz-cite-prefix">Jan. 18, 2016 - <a class=3D"moz-txt-link-abb=
reviated" href=3D"mailto:nite@hq.sk">
nite@hq.sk</a>:<br>
</div>
<blockquote cite=3D"mid:569CFA97.2080209@hq.sk" type=3D"cite">
<div class=3D"moz-cite-prefix">Hello,<br>
<br>
please find my comments on the pending items.<br>
</div>
</blockquote>
</div>
</blockquote>
</span>
<div>[snip]</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<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 bgcolor=3D"#FFFFFF" text=3D"#000000">[JM] I still feel unwise to consi=
der a lack of feedback as a proof of synchronization. What if, from time to=
 time, a PCRpt gets lost? I do not think acknowledgement would be a pain to=
 add, but its lack can easily turn to
 that in operational situations.</div>
</div>
</blockquote>
</span>
<div><br>
</div>
<div>PCEP runs on top of TCP, so delivery of all messages is guaranteed by =
the underlying transport. The PCE itself can loose a message, but if it doe=
s, it will typically have a bigger problem than just lost messages ;-)&nbsp=
;</div>
<div><br>
</div>
<div>Another reason that we did not put in an explicit ack is stay in the s=
pirit of the original RFC5440, which is modeled after BGP. BGP also does no=
t have acks for any of its messages - it just assumes that the transport wi=
ll take care of the guaranteed delivery.</div>
<div><br>
</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Jan</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div bgcolor=3D"#FFFFFF" text=3D"#000000"><br>
</div>
</div>
</span>
</body>
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References: <56210C68.1080904@orange.com> <CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com> <569CFA97.2080209@hq.sk> <56AF5F41.9000903@orange.com>
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Subject: Re: [Pce] Chair's Review of draft-ietf-pce-stateful-pce-11
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On 02/01/2016 02:36 PM, Julien Meuric wrote:
> Hi Robert.
>

Hello Julien,

> Thank you for your help to move this forward. Please find my comments 
> below [JM]. Note that a couple of your answers are not aligned with 
> the proposed resolutions currently included the I-D: I was fine with 
> these, therefore please make sure you are so that I can send to the IESG.
>

please see inline, I am pruning the items we have converged on...

> Julien
>
>
> Jan. 18, 2016 - nite@hq.sk:
[snip]
>>>
>>>     - Avoiding "positive acknowledgements for properly received
>>>     synchronization messages" has scalability benefits in normal
>>>     situations, but the PCC is blind and may keep on sending PCRpt
>>>     to dead processes behind up PCEP sessions. Have you consider
>>>     acknowledgement, possibly using a compression mechanism like the
>>>     one defined later in the I-D?
>>>
>>> ### XXX Pending
>>
>> The association between a PCEP session and PCE processes is something 
>> which I would consider an internal PCE detail, and it should be 
>> covered by the next sentence (e.g. raise PCErr 20/1).
> [JM] I still feel unwise to consider a lack of feedback as a proof of 
> synchronization. What if, from time to time, a PCRpt gets lost? I do 
> not think acknowledgement would be a pain to add, but its lack can 
> easily turn to that in operational situations.

The assumption here is that PCEP runs on top of TCP, so no PCRpts get 
lost on the network without also losing the session. The procedures for 
validating that the session is in fact synchronized (possibly on a 
periodic basis) are part of draft-ietf-pce-stateful-sync-optimizations. 
I think we can add some text around that.

>>>     - In section 5.5.1, it is not clear if an empty LSP Update
>>>     Request with a Delegate flag to 1 is an acceptable way for a PCE
>>>     to send a delegation acknowledgement: to be clarified.
>>>
>>> ### XXX Pending
>>
>> It is not, as that would be seen as a request to modify the LSP setup 
>> to empty. Such an acknowledgement would have to include full 
>> configuration as previously reported -- which would be handled as a 
>> normal update.
> [JM] The I-Ds says the contrary: to be checked. Note that empty could 
> be loose, which seems possible to handle at the signaling level.

I think this is clarified in -13 (section 5.7).

>
>>>     - The behavior associated to the resource limit per PCC rather
>>>     looks like a Notifcation than an Error (e.g., in RFC 5440,
>>>     cancelling a set of pending requests relies on PCNtf). Please
>>>     consider the use of Notification instead of Error here.
>>>
>>> ### XXX Pending
>>
>> Current wording is based on the assumption that the PCE has to have a 
>> consistent point-in-time view of the PCC's state. In this regard a 
>> PCRpt of a new LSP which exceeds PCE implementation-internal limit on 
>> the number of LSPs it supports would break that assumption, hence we 
>> chose PCErr. This makes it consistent with what would happen if that 
>> LSP is reported during initial state resynchronization.
> [JM] Please note that the current I-D uses "PCNtf", and I am fine with 
> that resolution. I was not questioning the expected behavior, which 
> must remain. I was just suggesting the expected type of message to be 
> consistent with RFC 5440: the PCC has not made anything wrong, it is 
> informed that the PCE no more accepts its reports similarly to the way 
> a PCE is able to tell about overload or cancel some requests.

I'll try to re-read the entire thing and report back.

>
>>>     - It would be nice to elaborate on the reason why the
>>>     SYMBOLIC-PATH-NAME MUST be included and not SHOULD.
>>>     - I do not see why SYMBOLIC-PATH-NAME may be included in SRP
>>>     Object: defining the LSP Object as its single place seems enough
>>>     and much simpler.
>>>
>>>
>>> ### XXX  Pending
>>
>> The MUST is there to maintain a single global identifier for the LSP. 
>> PLSP-ID is then used as a shorthand. I do not recollect the exact 
>> reasoning as to why the TLV can be in SRP, as the placement and 
>> semantics of that TLV has changed quite a bit over the past couple of 
>> years. If I were to venture a guess, I think it was retrofitted to 
>> allow the PCE to update the symbolic path name.
> [JM] OK about the "MUST". About SYMBOLIC-PATH-NAME in SRP, please 
> choose: either it is legacy and must be dropped (current version), or 
> there is a reason and it must be documented in the I-D.

It was introduced in -05 revision with the SRP object. We'll dig in 
history some more to see where this came from.

Bye,
Robert

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    <div class="moz-cite-prefix">On 02/01/2016 02:36 PM, Julien Meuric
      wrote:<br>
    </div>
    <blockquote cite="mid:56AF5F41.9000903@orange.com" type="cite">
      <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
      Hi Robert.<br>
      <br>
    </blockquote>
    <br>
    Hello Julien,<br>
    <br>
    <blockquote cite="mid:56AF5F41.9000903@orange.com" type="cite">
      Thank you for your help to move this forward. Please find my
      comments below [JM]. Note that a couple of your answers are not
      aligned with the proposed resolutions currently included the I-D:
      I was fine with these, therefore please make sure you are so that
      I can send to the IESG.<br>
      <br>
    </blockquote>
    <br>
    please see inline, I am pruning the items we have converged on...<br>
    <br>
    <blockquote cite="mid:56AF5F41.9000903@orange.com" type="cite">
      Julien<br>
      <br>
      <br>
      <div class="moz-cite-prefix">Jan. 18, 2016 - <a
          moz-do-not-send="true" class="moz-txt-link-abbreviated"
          href="mailto:nite@hq.sk"><a class="moz-txt-link-abbreviated" href="mailto:nite@hq.sk">nite@hq.sk</a></a>:<br>
      </div>
      <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">
        <meta http-equiv="Content-Type" content="text/html;
          charset=utf-8">
      </blockquote>
    </blockquote>
    [snip] <br>
    <blockquote cite="mid:56AF5F41.9000903@orange.com" type="cite">
      <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">
        <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
          type="cite">
          <div dir="ltr">
            <div>
              <div class="gmail_extra">
                <div class="gmail_quote">
                  <blockquote class="gmail_quote" style="margin:0px 0px
                    0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                    - Avoiding "positive acknowledgements for properly
                    received synchronization messages" has scalability
                    benefits in normal situations, but the PCC is blind
                    and may keep on sending PCRpt to dead processes
                    behind up PCEP sessions. Have you consider
                    acknowledgement, possibly using a compression
                    mechanism like the one defined later in the I-D?<br>
                  </blockquote>
                  <div>### XXX PendingÂ </div>
                </div>
              </div>
            </div>
          </div>
        </blockquote>
        <br>
        The association between a PCEP session and PCE processes is
        something which I would consider an internal PCE detail, and it
        should be covered by the next sentence (e.g. raise PCErr 20/1).<br>
      </blockquote>
      [JM] I still feel unwise to consider a lack of feedback as a proof
      of synchronization. What if, from time to time, a PCRpt gets lost?
      I do not think acknowledgement would be a pain to add, but its
      lack can easily turn to that in operational situations.<br>
    </blockquote>
    <br>
    The assumption here is that PCEP runs on top of TCP, so no PCRpts
    get lost on the network without also losing the session. The
    procedures for validating that the session is in fact synchronized
    (possibly on a periodic basis) are part of
    draft-ietf-pce-stateful-sync-optimizations. I think we can add some
    text around that.<br>
    <br>
    <blockquote cite="mid:56AF5F41.9000903@orange.com" type="cite">
      <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">
        <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
          type="cite">
          <div dir="ltr">
            <div>
              <div class="gmail_extra">
                <div class="gmail_quote">
                  <blockquote class="gmail_quote" style="margin:0px 0px
                    0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                    - In section 5.5.1, it is not clear if an empty LSP
                    Update Request with a Delegate flag to 1 is an
                    acceptable way for a PCE to send a delegation
                    acknowledgement: to be clarified.Â <br>
                  </blockquote>
                  <div>### XXX Pending</div>
                </div>
              </div>
            </div>
          </div>
        </blockquote>
        <br>
        It is not, as that would be seen as a request to modify the LSP
        setup to empty. Such an acknowledgement would have to include
        full configuration as previously reported -- which would be
        handled as a normal update.<br>
      </blockquote>
      [JM] The I-Ds says the contrary: to be checked. Note that empty
      could be loose, which seems possible to handle at the signaling
      level.<br>
    </blockquote>
    <br>
    I think this is clarified in -13 (section 5.7).<br>
    <br>
    <blockquote cite="mid:56AF5F41.9000903@orange.com" type="cite"> <br>
      <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">
        <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
          type="cite">
          <div dir="ltr">
            <div>
              <div class="gmail_extra">
                <div class="gmail_quote">
                  <blockquote class="gmail_quote" style="margin:0px 0px
                    0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                    - The behavior associated to the resource limit per
                    PCC rather looks like a Notifcation than an Error
                    (e.g., in RFC 5440, cancelling a set of pending
                    requests relies on PCNtf). Please consider the use
                    of Notification instead of Error here.<br>
                  </blockquote>
                  <div>### XXX Pending</div>
                </div>
              </div>
            </div>
          </div>
        </blockquote>
        <br>
        Current wording is based on the assumption that the PCE has to
        have a consistent point-in-time view of the PCC's state. In this
        regard a PCRpt of a new LSP which exceeds PCE
        implementation-internal limit on the number of LSPs it supports
        would break that assumption, hence we chose PCErr. This makes it
        consistent with what would happen if that LSP is reported during
        initial state resynchronization.<br>
      </blockquote>
      [JM] Please note that the current I-D uses "PCNtf", and I am fine
      with that resolution. I was not questioning the expected behavior,
      which must remain. I was just suggesting the expected type of
      message to be consistent with RFC 5440: the PCC has not made
      anything wrong, it is informed that the PCE no more accepts its
      reports similarly to the way a PCE is able to tell about overload
      or cancel some requests.<br>
    </blockquote>
    <br>
    I'll try to re-read the entire thing and report back.<br>
    <br>
    <blockquote cite="mid:56AF5F41.9000903@orange.com" type="cite"> <br>
      <blockquote cite="mid:569CFA97.2080209@hq.sk" type="cite">
        <blockquote
cite="mid:CAG4Q_avL_vVpmzyTfk4uGbdKYhvYVr_74KfaX-5iCGm7Vf+xVA@mail.gmail.com"
          type="cite">
          <div dir="ltr">
            <div>
              <div class="gmail_extra">
                <div class="gmail_quote">
                  <blockquote class="gmail_quote" style="margin:0px 0px
                    0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
                    - It would be nice to elaborate on the reason why
                    the SYMBOLIC-PATH-NAME MUST be included and not
                    SHOULD.<br>
                    - I do not see why SYMBOLIC-PATH-NAME may be
                    included in SRP Object: defining the LSP Object as
                    its single place seems enough and much simpler.<br>
                  </blockquote>
                  <div><br>
                  </div>
                  <div>### XXX Â Pending</div>
                </div>
              </div>
            </div>
          </div>
        </blockquote>
        <br>
        The MUST is there to maintain a single global identifier for the
        LSP. PLSP-ID is then used as a shorthand. I do not recollect the
        exact reasoning as to why the TLV can be in SRP, as the
        placement and semantics of that TLV has changed quite a bit over
        the past couple of years. If I were to venture a guess, I think
        it was retrofitted to allow the PCE to update the symbolic path
        name.<br>
      </blockquote>
      [JM] OK about the "MUST". About SYMBOLIC-PATH-NAME in SRP, please
      choose: either it is legacy and must be dropped (current version),
      or there is a reason and it must be documented in the I-D.<br>
    </blockquote>
    <br>
    It was introduced in -05 revision with the SRP object. We'll dig in
    history some more to see where this came from.<br>
    <br>
    Bye,<br>
    Robert<br>
  </body>
</html>

--------------070107020808050600030707--


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From: Jonathan Hardwick <Jonathan.Hardwick@metaswitch.com>
To: Robert Varga <nite@hq.sk>
Thread-Topic: [Pce] draft-ietf-pce-pceps-07 available
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Subject: Re: [Pce] draft-ietf-pce-pceps-07 available
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Hi Robert

(I'm answering as WG chair.)

Sorry for the slow reply.  I would expect the progress of draft-ietf-pce-pc=
eps through to RFC to be reasonably fast, so I'm not sure early code point =
allocation should be needed.  The main risk would be a conflict with the st=
ateful PCE drafts, should the new message in the PCEPS draft be allocated a=
 clashing code point with the values that the stateful drafts have "recomme=
nded" for their messages.

I think it is possible that PCEPS will leap-frog stateful PCE on the way to=
 RFC, so I think the best way to proceed is to obtain an early allocation f=
or draft-ietf-pce-stateful-pce and draft-ietf-pce-pce-initiated-lsp.  To do=
 this we would only require help from the stateful draft authors (e.g. you)=
 to answer any questions that IANA has about your text (which would happen =
sooner or later anyway :-).  Would you like us to start an early allocation=
 for these drafts?

Best regards
Jon


From: Pce [mailto:pce-bounces@ietf.org] On Behalf Of Robert Varga
Sent: 21 January 2016 21:48
To: DIEGO LOPEZ GARCIA <diego.r.lopez@telefonica.com>; pce@ietf.org
Subject: Re: [Pce] draft-ietf-pce-pceps-07 available


On 2016-01-21 15:07, DIEGO LOPEZ GARCIA wrote:
Hi,

We have just uploaded a new version of draft-ietf-pce-pceps (https://datatr=
acker.ietf.org/doc/draft-ietf-pce-pceps/)

We believe this new version addresses all the comments received from the SE=
CDIR review after the last call period, and other pending ones provided by =
Tom while that SECDIR review was taking place. As far as the authors can sa=
y, the document is ready to progress.


Hello,

would it make sense to request an early codepoint allocation for use in imp=
lementations?

Thanks,
Robert

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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi Robert<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">(I&#8217;m=
 answering as 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;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Sorry for =
the slow reply.&nbsp; I would expect the progress of draft-ietf-pce-pceps t=
hrough to RFC to be reasonably fast, so I&#8217;m not sure
 early code point allocation should be needed.&nbsp; The main risk would be=
 a conflict with the stateful PCE drafts, should the new message in the PCE=
PS draft be allocated a clashing code point with the values that the statef=
ul drafts have &#8220;recommended&#8221; for their
 messages.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">I think it=
 is possible that PCEPS will leap-frog stateful PCE on the way to RFC, so I=
 think the best way to proceed is to obtain an
 early allocation for draft-ietf-pce-stateful-pce and draft-ietf-pce-pce-in=
itiated-lsp.&nbsp; To do this we would only require help from the stateful =
draft authors (e.g. you) to answer any questions that IANA has about your t=
ext (which would happen sooner or later
 anyway :-).&nbsp; Would you like us to start an early allocation for these=
 drafts?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Best regar=
ds<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Jon<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:11.0pt;fo=
nt-family:&quot;Calibri&quot;,sans-serif;color:windowtext">From:</span></b>=
<span lang=3D"EN-US" style=3D"font-size:11.0pt;font-family:&quot;Calibri&qu=
ot;,sans-serif;color:windowtext"> Pce [mailto:pce-bounces@ietf.org]
<b>On Behalf Of </b>Robert Varga<br>
<b>Sent:</b> 21 January 2016 21:48<br>
<b>To:</b> DIEGO LOPEZ GARCIA &lt;diego.r.lopez@telefonica.com&gt;; pce@iet=
f.org<br>
<b>Subject:</b> Re: [Pce] draft-ietf-pce-pceps-07 available<o:p></o:p></spa=
n></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal">On 2016-01-21 15:07, DIEGO LOPEZ GARCIA wrote:<o:p><=
/o:p></p>
</div>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<p class=3D"MsoNormal">Hi, <o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">We have just uploaded a new version of&nbsp;draft-ie=
tf-pce-pceps (<a href=3D"https://datatracker.ietf.org/doc/draft-ietf-pce-pc=
eps/">https://datatracker.ietf.org/doc/draft-ietf-pce-pceps/</a>)<o:p></o:p=
></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">We believe this new version addresses all the commen=
ts received from the SECDIR review after the last call period, and other pe=
nding ones provided by Tom while that SECDIR review was taking place. As fa=
r as the authors can say, the document
 is ready to progress.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</blockquote>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><br>
Hello,<br>
<br>
would it make sense to request an early codepoint allocation for use in imp=
lementations?<br>
<br>
Thanks,<br>
Robert<o:p></o:p></p>
</div>
</body>
</html>

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Cc: Common Control and Measurement Plane Discussion List <ccamp@ietf.org>, JP Vasseur <jpv@cisco.com>, Traffic Engineering Architecture and Signaling Discussion List <teas@ietf.org>, Vishnu Pavan Beeram <vbeeram@juniper.net>, Path Computation Element Discussion List <pce@ietf.org>, David Sinicrope <david.sinicrope@ericsson.com>, Alvaro Retana <aretana@cisco.com>
Subject: [Pce] New Liaison Statement, "Response to 18 Dec 2016 liaison concerning: Achieving Packet Network Optimization using DWDM Interfaces"
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Title: Response to 18 Dec 2016 liaison concerning: Achieving Packet Network Optimization using DWDM Interfaces
Submission Date: 2016-02-02
URL of the IETF Web page: https://datatracker.ietf.org/liaison/1454/

From: "David Sinicrope" <david.sinicrope@ericsson.com>
To: michael.fargano@centurylink.com
Cc: Alvaro Retana <aretana@cisco.com>,Deborah Brungard <db3546@att.com>,Julien Meuric <julien.meuric@orange.com>,David Sinicrope <david.sinicrope@ericsson.com>,Jonathan Hardwick <jonathan.hardwick@metaswitch.com>,Fatai Zhang <zhangfatai@huawei.com>,Path Computation Element Discussion List <pce@ietf.org>,Traffic Engineering Architecture and Signaling Discussion List <teas@ietf.org>,Vishnu Pavan Beeram <vbeeram@juniper.net>,Alia Atlas <akatlas@gmail.com>,Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>,Lou Berger <lberger@labn.net>,Common Control and Measurement Plane Discussion List <ccamp@ietf.org>,JP Vasseur <jpv@cisco.com>,
Response Contacts: vbeeram@juniper.net, lberger@labn.net, jonathan.hardwick@metaswitch.com, jpv@cisco.com, julien.meuric@orange.com, daniele.ceccarelli@ericsson.com, zhangfatai@huawei.com
Technical Contacts: 
Purpose: In response

Referenced liaison: Achieving Packet Network Optimization using DWDM Interfaces (https://datatracker.ietf.org/liaison/1449/)

Body: The TEAS, PCE and CCAMP Working Groups would again like to thank the Broadband Forum for informing us of your effort on packet-optical networks, and providing the IETF with the opportunity to review and comment on your document and its use of IETF RFCs. As offered, we have conducted a more in depth review on the revised draft you provided in your liaison on 18-Dec-2015. Please find the comments and feedback below for your consideration. If you have any questions or concerns, please feel free to contact the respective WG Chairs, or send email to the respective WG email lists.
Also please keep us informed of any gaps you identify in the RFCs that are needed to satisfy the requirements in your specifications. Your feedback is greatly appreciated and can also be provided via the relevant IETF WG email list without the need for a formal liaison.

We look forward to our continued communication on this important area of work.

Sincerely,
TEAS, PCE and CCAMP WG Chairs
â€”â€”â€”
Comments and feedbacks received from WG participants:

* In WT-319 Part-B is mentioned the fully separated solution while in TR-319 the fully integrated DWDM interface in the client equipment.

* The two solutions can signal on the UNI interface different service request (Ethernet or OTN in the former, optical channel in the latter)
* It would be nice to see also the Hybrid solution to be supported (i.e. Fully integrated on one side of the circuit and fully separated on the other side).

* Although are not yet published as RFC there are two drafts that may be relevant and have been submitted for publication to the IESG:

* RSVP-TE Extensions for Collecting SRLG Information, draft-ietf-teas-rsvp-te-srlg-collect . This draft supports the collection of LSP SRLGs in the core and sharing the list to the Edge.
* Domain Subobjects for Resource ReserVation Protocol - Traffic Engineering (RSVP-TE), draft-ietf-teas-rsvp-te-domain-subobjects. Which extends inclusion and exclusion semantics in a way that is likely to be of interest to BBF use casess.

* The usage of SNMP for the network provisioning and deployment should be discouraged. In addition to that existing RFCs do not cover the provisioning of the colored side of an optical interface. Yang models to provision colored interfaces have been submitted to the IETF but have not been accepted yet, however the CCAMP WG is in the process of starting the adoption process of â€œA framework for Management and Control of DWDM optical interface parametersâ€� (https://tools.ietf.org/html/draft-kdkgall-ccamp-dwdm-if-mng-ctrl-fwk-01)
* the level of details does not look consistent along the text, e.g.:
- for RSVP-TE, LSP encoding/SC/G-PID are specified, but the label itself is limited to "the Generalized Label represents a generic MPLS label", where the last phrase puzzles me, especially in this context of DCSC;
- LMP is mentioned, but considering the number of feature it can bring, I would expect a bit more about it;
- about PCEP: it is required in section 4.2 but its use is not defined; it is also mentioned in section 4.4 along with SDN, but the appropriate reference should include "draft-ietf-pce-stateful-pce" on top of RFC 5440, and possibly even "draft-ietf-pce-pce-initiated-lsp".
* Just a suggestion: It would be nice not to limit the Client interface (Dd) to Ethernet or OTN. Also Data center interfaces may be supported (like Fiber Channel).
* I note that you are stating that RFC2205 format TSPEC and FLOWSPEC are to be used. I recommend using RFC6003 Ethernet Traffic Parameters for LSPs carrying Ethernet Services, e.g., such as those discussed in RFC6004, and RFC7139 G.709 OTN TDM Traffic Parameters for LSPs carrying OTN Services.
* Page 17, r-14. Does this requirement mean RFC3209 is used as a foundation to R-15 or that RFC3209 is used to signal the LSPs? If the former, the requirement is unnecessary and misleading and should be dropped. If the latter, this is inconsistent with signaling Ethernet or OTN GMPLS LSPs.
* R-17, the specific required timers should be identified.
* Message ID and reliable delivery defined in Rfc2961 are supported by GMPLS implementations. You may wish to make this a recommendation or requirement.
* You may wish to add that RESCONF is for further study at the end of section 4.3.2.1
Attachments:

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Subject: Re: [Pce] draft-ietf-pce-pceps-07 available
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Diego

Looks good with one slight query.  I commented before on the use of
'client' in s.3.5 which suggested an asymmetric protocol, where the PCE
checks on the PCC needed to be more stringent that those of the PCC on
the PCE.  I notice that one of the 'client' has gone but one has not and
there is still a 'PCC' in there so it still to me carries the flavour
that PCE checking of the PCC is more important than the other way round.
I do not know if this is ok or not, how it lines up with the threat
model.

Tom Petch


----- Original Message -----
From: "DIEGO LOPEZ GARCIA" <diego.r.lopez@telefonica.com>
To: <pce@ietf.org>
Sent: Thursday, January 21, 2016 2:07 PM

Hi,

We have just uploaded a new version of draft-ietf-pce-pceps
(https://datatracker.ietf.org/doc/draft-ietf-pce-pceps/)

We believe this new version addresses all the comments received from the
SECDIR review after the last call period, and other pending ones
provided by Tom while that SECDIR review was taking place. As far as the
authors can say, the document is ready to progress.

Be goode,

--
"Esta vez no fallaremos, Doctor Infierno"

Dr Diego R. Lopez
Telefonica I+D
http://people.tid.es/diego.lopez/

e-mail: diego.r.lopez@telefonica.com
Tel:    +34 913 129 041
Mobile: +34 682 051 091
----------------------------------



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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 Path Computation Element of the IETF.

        Title           : PCEP Extension for WSON Routing and Wavelength Assignment
        Authors         : Young Lee
                          Ramon Casellas
	Filename        : draft-ietf-pce-wson-rwa-ext-04.txt
	Pages           : 25
	Date            : 2016-02-11

Abstract:
   This document provides the Path Computation Element communication
   Protocol (PCEP) extensions for the support of Routing and Wavelength
   Assignment (RWA) in Wavelength Switched Optical Networks (WSON).
   Lightpath provisioning in WSONs requires a routing and wavelength
   assignment (RWA) process.  From a path computation perspective,
   wavelength assignment is the process of determining which wavelength
   can be used on each hop of a path and forms an additional routing
   constraint to optical light path computation.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-pce-wson-rwa-ext/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-pce-wson-rwa-ext-04

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-pce-wson-rwa-ext-04


Please note that it may take a couple of minutes from the time of submission
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From: Leeyoung <leeyoung@huawei.com>
To: "pce@ietf.org" <pce@ietf.org>
Thread-Topic: [Pce] I-D Action: draft-ietf-pce-wson-rwa-ext-04.txt
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Subject: Re: [Pce] I-D Action: draft-ietf-pce-wson-rwa-ext-04.txt
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Hi,

This is to revive the expired draft. The updated version is without content=
 changes except some updates on the reference section.=20

This draft was asked for WG LC in Dallas IETF.=20

Thanks.
Young & Ramon=20

-----Original Message-----
From: Pce [mailto:pce-bounces@ietf.org] On Behalf Of internet-drafts@ietf.o=
rg
Sent: Thursday, February 11, 2016 10:29 AM
To: i-d-announce@ietf.org
Cc: pce@ietf.org
Subject: [Pce] I-D Action: draft-ietf-pce-wson-rwa-ext-04.txt


A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
This draft is a work item of the Path Computation Element of the IETF.

        Title           : PCEP Extension for WSON Routing and Wavelength As=
signment
        Authors         : Young Lee
                          Ramon Casellas
	Filename        : draft-ietf-pce-wson-rwa-ext-04.txt
	Pages           : 25
	Date            : 2016-02-11

Abstract:
   This document provides the Path Computation Element communication
   Protocol (PCEP) extensions for the support of Routing and Wavelength
   Assignment (RWA) in Wavelength Switched Optical Networks (WSON).
   Lightpath provisioning in WSONs requires a routing and wavelength
   assignment (RWA) process.  From a path computation perspective,
   wavelength assignment is the process of determining which wavelength
   can be used on each hop of a path and forms an additional routing
   constraint to optical light path computation.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-pce-wson-rwa-ext/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-pce-wson-rwa-ext-04

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-pce-wson-rwa-ext-04


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

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

_______________________________________________
Pce mailing list
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--_000_99B428A7A65F49D2AF5895BA1023AAF1ericssoncom_--


From nobody Thu Feb 11 21:46:38 2016
Return-Path: <dhruv.dhody@huawei.com>
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From: Dhruv Dhody <dhruv.dhody@huawei.com>
To: Jeff Tantsura <jeff.tantsura@ericsson.com>, Robert Varga <nite@hq.sk>, "draft-ietf-pce-segment-routing@ietf.org" <draft-ietf-pce-segment-routing@ietf.org>, "draft-ietf-pce-stateful-pce@tools.ietf.org" <draft-ietf-pce-stateful-pce@tools.ietf.org>
Thread-Topic: [Pce] Query on Usage of LSP Identifier TLV in SR
Thread-Index: AdEEswV5Hp/XsRTiRVyYCjyiKol6/QIK2zOAFg6yDAAACPkY4A==
Date: Fri, 12 Feb 2016 05:44:32 +0000
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Cc: "pce@ietf.org" <pce@ietf.org>, "pce-chairs@tools.ietf.org" <pce-chairs@tools.ietf.org>
Subject: Re: [Pce] Query on Usage of LSP Identifier TLV in SR
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From nobody Fri Feb 12 21:45:15 2016
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Subject: [Pce] Fwd: [mpls] discussion on a common top for yang models related to MPLS
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Working Groups,


This mail was sent on the mpls wg mailing list to trigger a discussion.
It hs been pointed out that participants in other wg's might also be
interested to contribute to this discussion. I therefore forward to the
most likely wg's.

Plese remember that the discussion is intended to take place on the
mpls wg list (mpls@ietf.org).

/Loa

-------- Forwarded Message --------
Subject: [mpls] discussion on a common top for yang models related to MPLS
Date: Fri, 5 Feb 2016 20:34:21 +0800
From: Loa Andersson <loa@pi.nu>
To: mpls@ietf.org <mpls@ietf.org>

All,

We have had discussion among the MPLS, TEAS and CCAMP working group
chairs - but as individual contributors, with chair half off. We agree
that this discussion should be taken to the working group(s).

The YANG models for MPLS and GMPLS are quite rapidly taking shape. MPLS
and GMPLS technologies have traditionally been very close, but their
development has been a bit disjoint. For the YANG models we would like
to minimize duplication of models/work and think the structure should
have a common the top,  with specific technologies augmented below.

The structure in general as well as the YANG model at the common top
needs to be the generic and aligned across the output of at least
CCAMP, MPLS and TEAS working groups. There has been good work
progressing on TE specifics, e.g., see draft-ietf-teas-yang-te, but
other areas remain. On the LDP side of the house draft-raza-mpls-
ldp-mldp-yang is rapidly progressing towards working group adoption.

The models defined in draft-saad-mpls-static-yang could serve as the
start on filling some of the remaining gaps; covering core xMPLS
definitions and static LSPs.  There are a number of ways to make the
structure intuitive and generic, and serve as a foundation for
technology specific models.  -- This effort can be viewed as the same
type of work that was done for TE, see draft-ietf-teas-yang-te.

We think it would be a good idea  if the authors and the  WG considers
how to structure xMPLS definitions and static LSPs models to best
foster common use across the different related models being worked on
across  different WGs.

We are sending this mail in hopes of getting this discussion started.

Thank you,
Lou and Loa
-- 


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

-- 


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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<p class=3D"MsoPlainText">Hi WG,<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">We have updated the draft, the main changes are =
=A8C <o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText" style=3D"margin-left:36.0pt;text-indent:-18.0pt;m=
so-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"mso-list:Ignore">-<span style=3D"font:7=
.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Sub-TLVs for Delay, Packet Loss, Bandwidth utilizat=
ion etc in Link Attributes<o:p></o:p></p>
<p class=3D"MsoPlainText" style=3D"margin-left:36.0pt;text-indent:-18.0pt;m=
so-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"mso-list:Ignore">-<span style=3D"font:7=
.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Prefix Descriptors TLV<o:p></o:p></p>
<p class=3D"MsoPlainText" style=3D"margin-left:36.0pt;text-indent:-18.0pt;m=
so-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"mso-list:Ignore">-<span style=3D"font:7=
.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Sub-TLV code points and IANA considerations<o:p></o=
:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Slide from Yokohama [<a href=3D"https://www.ietf.=
org/proceedings/94/slides/slides-94-pce-7.pdf">https://www.ietf.org/proceed=
ings/94/slides/slides-94-pce-7.pdf</a>], for a quick refresher :)<o:p></o:p=
></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Regards,<o:p></o:p></p>
<div style=3D"mso-element:para-border-div;border:none;border-bottom:solid w=
indowtext 1.0pt;padding:0cm 0cm 1.0pt 0cm">
<p class=3D"MsoPlainText" style=3D"border:none;padding:0cm">Dhruv, Young &a=
mp; Daniele<o:p></o:p></p>
</div>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Name:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; draft-d=
hodylee-pce-pcep-ls<o:p></o:p></p>
<p class=3D"MsoPlainText">Revision:&nbsp;&nbsp; 02<o:p></o:p></p>
<p class=3D"MsoPlainText">Title:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp; PCEP Extension for Distribution of Link-State and T=
E Information.<o:p></o:p></p>
<p class=3D"MsoPlainText">URL:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; <a href=3D"https://www.ietf.org/internet-drafts/draft=
-dhodylee-pce-pcep-ls-02.txt">
https://www.ietf.org/internet-drafts/draft-dhodylee-pce-pcep-ls-02.txt</a><=
o:p></o:p></p>
<p class=3D"MsoPlainText">Status:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp; <a href=3D"https://datatracker.ietf.org/doc/draft-dhodylee-pce-pcep-=
ls/">
https://datatracker.ietf.org/doc/draft-dhodylee-pce-pcep-ls/</a><o:p></o:p>=
</p>
<p class=3D"MsoPlainText">Htmlized:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a =
href=3D"https://tools.ietf.org/html/draft-dhodylee-pce-pcep-ls-02">
https://tools.ietf.org/html/draft-dhodylee-pce-pcep-ls-02</a><o:p></o:p></p=
>
<p class=3D"MsoPlainText">Diff:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp; <a href=3D"https://www.ietf.org/rfcdiff?url2=3Ddraft-dhody=
lee-pce-pcep-ls-02">
https://www.ietf.org/rfcdiff?url2=3Ddraft-dhodylee-pce-pcep-ls-02</a><o:p><=
/o:p></p>
<div style=3D"mso-element:para-border-div;border:none;border-bottom:solid w=
indowtext 1.0pt;padding:0cm 0cm 1.0pt 0cm">
<p class=3D"MsoNormal" style=3D"border:none;padding:0cm"><span style=3D"fon=
t-family:&quot;Trebuchet MS&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p>=
</span></p>
</div>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Trebuchet MS&quot;,=
&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"ZH-CN" style=3D"font-size:10.5pt;font-=
family:=CB=CE=CC=E5">=B1=BE=D3=CA=BC=FE=BC=B0=C6=E4=B8=BD=BC=FE=BA=AC=D3=D0=
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=C8=CB=BB=F2=C8=BA=D7=E9=A1=A3=BD=FB</span><span style=3D"font-size:10.5pt;=
font-family:&quot;Courier New&quot;,&quot;serif&quot;"><o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span lang=3D"ZH-CN" style=3D"font-size:10.5pt;font-=
family:=CB=CE=CC=E5">=D6=B9=C8=CE=BA=CE=C6=E4=CB=FB=C8=CB=D2=D4=C8=CE=BA=CE=
=D0=CE=CA=BD=CA=B9=D3=C3=A3=A8=B0=FC=C0=A8=B5=AB=B2=BB=CF=DE=D3=DA=C8=AB=B2=
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font-family:&quot;Courier New&quot;,&quot;serif&quot;"><o:p></o:p></span></=
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<p class=3D"MsoNormal"><span lang=3D"ZH-CN" style=3D"font-size:10.5pt;font-=
family:=CB=CE=CC=E5">=B5=C4=D0=C5=CF=A2=A1=A3=C8=E7=B9=FB=C4=FA=B4=ED=CA=D5=
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quot;,&quot;serif&quot;"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;font-family:&quot;Co=
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