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Re: [Pce] Mirja Kühlewind's No Objection on draft-ietf-pce-pce-initiated-lsp-10: (with COMMENT)

Jonathan Hardwick <Jonathan.Hardwick@metaswitch.com> Wed, 04 October 2017 16:00 UTC

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From: Jonathan Hardwick <Jonathan.Hardwick@metaswitch.com>
To: Mirja Kühlewind <ietf@kuehlewind.net>
CC: "draft-ietf-pce-pce-initiated-lsp@ietf.org" <draft-ietf-pce-pce-initiated-lsp@ietf.org>, "pce@ietf.org" <pce@ietf.org>, "pce-chairs@ietf.org" <pce-chairs@ietf.org>, The IESG <iesg@ietf.org>
Thread-Topic: [Pce] Mirja Kühlewind's No Objection on draft-ietf-pce-pce-initiated-lsp-10: (with COMMENT)
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Subject: Re: [Pce] Mirja Kühlewind's No Objection on draft-ietf-pce-pce-initiated-lsp-10: (with COMMENT)
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Hi Mirja

Many thanks for these comments.  I'm picking up this thread and replying as PCE working group chair, as the authors are unavailable.  I am very sorry for the delay.

Please see my proposed resolutions inline below, marked with "Jon>"

Best regards
Jon

<snip>

----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

1) I'm wondering why this spec is not part of I-D.ietf-pce-stateful-pce as it is also not published yet...?

Jon> It has been published now.  The main reasons were
- it took longer for PCE-initiated LSPs to be accepted into the PCE WG, and the authors did not want to hold up work on the base draft
- I-D.ietf-pce-stateful-pce was a self-contained set of function and it was envisioned that there was a class of device that would not implement the LSP initiation extensions
- I-D.ietf-pce-stateful-pce was already fairly long and complex, and merging them would have been an editing / reviewing headache.


2) I-D.ietf-pce-stateful-sync-optimizations should also be a normative references, given a flag is used in section 4.1 and a TLV is used in section
5.3.2 that are defined in that draft.

Jon> Good catch! Will fix it.

3) sec 5.4: "A PLSP-ID of zero removes all LSPs that were initiated by the PCE." and
   "If the PLSP-ID specified in the PCInitiate message was not created by a
   PCE.."
  -> This means that the PCC must remember which LSP was created by which PCE
  at instantiation time. This could be stated more explicitly.

Jon> I think the first sentence ought to say "A PLSP-ID of zero removes all LSPs that are delegated to the PCE."  I will fix the sentence.

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