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[Idr] draft-lin-idr-sr-epe-over-l2bundle-05 - Pre-Adoption Shepherd's Review

Susan Hares <shares@ndzh.com> Wed, 15 May 2024 00:53 UTC

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From: Susan Hares <shares@ndzh.com>
To: "idr@ietf.org" <idr@ietf.org>
Thread-Topic: draft-lin-idr-sr-epe-over-l2bundle-05 - Pre-Adoption Shepherd's Review
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Date: Wed, 15 May 2024 00:53:20 +0000
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draft-lin-idr-sr-epe-over-l2bundle-05
Status:  Needs additional work prior to WG Adoption

Detailed comments:
Thank you for querying Alvaro on this document:
https://mailarchive.ietf.org/arch/msg/idr/Vsmz_dNwXEobv1fRsyM1lD5ykwQ/

The IDR chairs viewpoint aligns with Alvaro's


  1.  Section 3.1 - is not needed

Alvaro's comments:

" I took a quick look at the draft -- it uses existing TLVs to convey the information, which is good.

Given that (IIRC) BGP-LS does not limit TLVs' use as sub-TLVs, rfc9085 already contemplates using the Adjacency SID TLV (as a sub-TLV), and rfc9086 already says that additional TLVs can be included to describe a link's characteristics, I find the contents quite obvious.  The update proposed in §3.1 is not needed"


  1.  Section 3.2 - why is this section needed?

Alvaro states: "[I expected something similar in §3.2 about using the SRv6 End.X SID TLV as a sub-TLV, but that text is not present.  It is not needed anyway."


The IDR chairs would like the authors to provide additional detail on

  1.  Why current BGP-LS cannot provide the L2 Bundle attributes?
  2.  What mechanisms are missing in the SRv6 or SR-MPLS for the BGP-EPE policy for time-sensitive L2 traffic?

The IDR chairs welcome a presentation on this draft at the 5/20/2024 interim.

Cheerily, Sue Hares

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