Aijun:

This is a good idea I can discuss with the authors.  However, the first step 
toward this combination is a decision on whether the WG wants to adoption (any 
or all of these drafts).

Cheerily, Sue

From: Aijun Wang <[email protected]>
Sent: Wednesday, June 24, 2026 11:57 PM
To: Susan Hares <[email protected]>; 'idr@ietf. org' <[email protected]>; 'spring' 
<[email protected]>
Cc: 'pce-chairs' <[email protected]>; 'srv6ops-chairs' 
<[email protected]>
Subject: RE: [Idr] [SR-TE]Adoption call for 3 drafts: 1) 
draft-lin-idr-sr-policy-admin-flags, 2) draft-liu-idr-sr-segment-list-optimize, 
3) draft-ali-idr-bgp-ls-sr-policy-sl-opt-distribution-00.txt (6/22/2026 to 
7/14/2026

Hi, Sue:

If these three drafts are interrelated, I would like you to encourage the 
authors of these drafts to combine into one draft, not three separate documents.
Should we try to decrease the "fragmentation" of IETF standards?

I have reviewed all three documents and think they can be combined into one 
document.

And, It seems that the "IFN (Install Final Node-sid) - 1 bit (Bit Position 
TBD1):" in draft-ali-idr-bgp-ls-sr-policy-sl-opt-distribution-00.txt, is 
actually defined in draft-liu-idr-sr-segment-list-optimize-06.txt, then why the 
WG adoption call draft-ali-idr-bgp-ls-sr-policy-sl-opt-distribution-00.txt?



Best Regards

Aijun Wang
China Telecom

From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Susan Hares
Sent: Wednesday, June 24, 2026 12:46 AM
To: idr@ietf. org <[email protected]<mailto:[email protected]>>; spring 
<[email protected]<mailto:[email protected]>>
Cc: pce-chairs <[email protected]<mailto:[email protected]>>; 
srv6ops-chairs <[email protected]<mailto:[email protected]>>
Subject: [Idr] [SR-TE]Adoption call for 3 drafts: 1) 
draft-lin-idr-sr-policy-admin-flags, 2) draft-liu-idr-sr-segment-list-optimize, 
3) draft-ali-idr-bgp-ls-sr-policy-sl-opt-distribution-00.txt (6/22/2026 to 
7/14/2026

Greetings:

This is an adoption 3 week WG adoption call sent to IDR and Spring for the 
following 3 drafts:
1. draft-lin-idr-sr-policy-admin-flag-05.txt -
2. draft-liu-idr-sr-segment-list-optimize-06.txt
3. draft-ali-idr-bgp-ls-sr-policy-sl-opt-distribution-00.txt

Both WGs must agree that these drafts are useful and appropriate.

The authors of these three drafts should respond to this email with an IPR 
Statement specifying the following:
1) draft you are a co-author on,
2) Whether you know of any IPR on that draft.

Background for the WG and Spring.

 [I-D. draft-ietf-spring-srv6-policy-sid- list-opt] specifies procedures to 
indicate whether the endpoint's node SID needs to be included or excluded when 
installing the SRv6  Policy.

1) draft-lin-idr-sr-policy-admin-flags specifies as Segment List Administrative 
Flags as segment list SubTLV. Flags include:
S- admin shutdown, B- backup ineligible, I-Ignore service route's Prefix SID, 
D- drop upon invalid (section 8.2, RFC9256), and E - eligible.
2) 
draft-liu-idr-sr-segment-list-optimize<https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_draft-2Dliu-2Didr-2Dsr-2Dsegment-2Dlist-2Doptimize_&d=DwMFAg&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=rEoy_H4r-c4UNUr3jSF-7Q&m=RjntOQpE0PTOmyN9aktQ2Swdw2n9KkMaab5dO_bRoNPQbJdQYV5cBJEfNcJbuuOI&s=rwc-kio_SJHar0SdViNs5UMjP6RG_m8-s8v6at9IV5o&e=>
 =  adds a flag of flag INF-Flag to Segment list administrative flags specified 
by draft-lin-idr-sr-policy-admin-flags.  The value (1) for INF-Flags indicates 
endpoint node SID is included in installing SID list(s) of the Candidate Path 
(CP) when set.
3) draft-ali-idr-bgp-ls-sr-policy-sl-opt-distribution-00.txt -  send INF-Flag 
in BGP-LS

Why 3 drafts in 1 call?
As you can see from the description, if draft-lin-idr-sr-policy-admin-flags is 
not adopted - then the other two drafts cannot be adopted.
Similarly, if draft-liu-idr-sr-segment-list-optimized is not adopted, then 
draft-ali-idr-bgp-ls-sr-policy-sl-opt-distribution cannot be adopted.

Questions for Spring WG:
1) Do these drafts correct implement 
[draft-ietf-spring-srv6-policy-sid-list-opt] concepts?>
2) Do you see any problem with the adoption of any of these three drafts:
(draft-lin-idr-sr-policy-admin-flag-05.txt, 
draft-liu-idr-sr-segment-list-optimize-06.txt, 
draft-ali-idr-bgp-ls-sr-policy-sl-opt-distribution-00.txt)

Question for IDR:
1) Are there any problems in the technology descriptions?
2) Does the status and setting of this flag work?  Are the "delays" inherent in 
BGP distribution a concern?
3) Does this draft help operators deploy SRv6?

Question for Spring and IDR:
1)  Does this draft open any error issues?

Please include in your comments - Support or No support for adoption.

Cheerily, Susan Hares
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