Hi Sue, WG,

After the discussion with the authors and WG members about the relationship 
between candidate path and segment lists in SR Policy architecture on the 
SPRING list, I agree it is suitable to have the segment list ID scoped under 
the candidate path hierarchy. This is also consistent with the specification of 
segment list ID in BGP-LS and PCEP extensions.  Thus I support progressing this 
document.

I have one comment about the newly added appendix. The text in appendix A.1 has 
much overlap with the text in the introduction, and is not about the related 
work in SPRING WG. It is suggested to clear up the text and focus on the work 
or discussion in SPRING WG related to this draft. Similarly, the text in 
appendix A.3 about RFC 9857 is not related to SRv6OPS.

Best regards,
Jie

From: Susan Hares <[email protected]>
Sent: Monday, May 11, 2026 3:47 AM
To: idr@ietf. org <[email protected]>; spring <[email protected]>; Path Computation 
Element Discussion List <[email protected]>
Subject: [Pce] WG LC for draft-ietf-idr-sr-policy-seglist-id-09.txt (5/10/2026 
to 5/31/2026)

Greetings:

This is a 3-week WG LC for draft-ietf-idr-sr-policy-seglist-id-09.txt 
(5/10/2026 to 5/31/2026).  The authors of 
draft-ietf-idr-sr-policy-seglist-id-09.txt should respond to this email with 
IPR statements.

This IDR WG LC is being cross-posted to Spring, PCE, and SRv6ops.  This 
document's WG LC needs input from these 3 WGs.

IDR WG members should discuss this draft and include in their discussion an 
indication of "support" or "no Support".   IDR members should consider the 
following:
1) Is this document ready for publication?
2) Does the segment list identifier specified at the candidate path (CP) scope 
help deployments?
3) Are there any technical flaws in this document?

Appendix A of this draft contains a "cross-WG" information regarding Spring and 
PCE.   This WG LC includes Spring and PCE to validate the cross-WG information. 
 In addition, SRV6ops will be informed of the WG LC.

This draft limits the scope of the segment list identifier to a candidate path. 
 During January - March,  the spring WG discussed whether this should be 
limited to just the Candidate Path or whether the scope of Segment List ID as 
unique within the headend node.  The discussion is at:
https://mailarchive.ietf.org/arch/msg/spring/JVzsniFIj3sSQ93HT4Sl4fbJDpE/

Spring WG - please review the author's decision to limit the BGP mechanism to a 
candidate path.  Does this limitation align with Spring's view on the segment 
list identifier?

PCE WG -  please check that the reference material related to 
draft-ietf-pce-multipath are correct and valid.

Thank you, Susan Hares

PS - the SRv6ops is an operational WG - so I will send notification and 
summarize results.







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