[Idr] BGP SR : 2 week Early Allocation Call for draft-ietf-idr-bgp-srmpls-elp-04 (11/2 to 11/17/2025)

Susan Hares <shares@ndzh.com> Sun, 02 November 2025 22:14 UTC

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From: Susan Hares <shares@ndzh.com>
To: idr <idr@ietf.org>
Thread-Topic: BGP SR : 2 week Early Allocation Call for draft-ietf-idr-bgp-srmpls-elp-04 (11/2 to 11/17/2025)
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Date: Sun, 02 Nov 2025 22:14:34 +0000
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Subject: [Idr] BGP SR : 2 week Early Allocation Call for draft-ietf-idr-bgp-srmpls-elp-04 (11/2 to 11/17/2025)
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Greetings:

This is the first of many emails regarding BGP-SR drafts (allocations, shepherd reviews, and status).  To help those who wish to stream these into a single mail box, I'm going to put "BGP SR" in the header of all these drafts.

This is request to review the early allocation requested in
draft-ietf-idr-bgp-srmpls-elp-04 - which specifies an ENLP:
(https://www.ietf.org/archive/id/draft-ietf-idr-bgp-srmpls-elp-04.txt)

Here's the location in the Tunnel Encaps Attribute:

      SR Policy SAFI NLRI: <Distinguisher, Policy-Color, Endpoint>
      Attributes:
         Tunnel Encaps Attribute (23)
            Tunnel Type: SR Policy
                Binding SID
                Preference
                Priority
                Policy Name
                Explicit NULL Label Policy (ENLP)
                Segment List
                    Weight
                    Segment
                    Segment
                    ...
                ...
This document defines a new ELP sub-TLV within Segment List sub-TLV.
The ELP sub-TLV has the following format:
    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
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |     Type      |   Length      |         RESERVED              |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

If you object to this allocation, please comment by
11/17/2025.

Cheerily, Sue