[Idr] Shepherd report for draft-ietf-idr-sr-policy-path-segment-14

Susan Hares <shares@ndzh.com> Mon, 03 November 2025 17:49 UTC

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From: Susan Hares <shares@ndzh.com>
To: idr <idr@ietf.org>
Thread-Topic: Shepherd report for draft-ietf-idr-sr-policy-path-segment-14
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Date: Mon, 03 Nov 2025 17:48:51 +0000
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Subject: [Idr] Shepherd report for draft-ietf-idr-sr-policy-path-segment-14
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draft:  draft-ietf-idr-sr-policy-path-segment-14
status: WG draft
Reviewer: Susan Hares
Augments: [RFC9012] by allowing new TLVs in Segment list
Status: Needs revision
Implementation status: Needs two implementations

Technical Issues

Technical points resolved from Shepherd review on draft-ietf-idr-sr-policy-path-segment-13
Issue-1, Issue-2, Issue-3 partially resolved, Issue-4 resolved


Issue-3 3. Section 5, error handling, (partial resolution).
3-3 Validation SR Candidate routes as active route done by  SRPM

Version -13 states:
/A BGP implementation MUST NOT perform semantic
verification of such fields nor consider the SR Policy update to be
invalid or not usable based on such validation. /

Is there a reason, you do not specifically state the SRPM?

[Cheng]No. I believe we did state the SRPM above this sentence. You can see

"In addition, the validation of the individual fields of the TLVs/Sub-TLVs of the associated segment list are beyond the scope of BGP as they are handled by the SR Policy Module [I-D.ietf-idr-sr-policy-safi<https://datatracker.ietf.org/doc/html/draft-ietf-idr-sr-policy-safi-06><http://i-d.ietf-idr-sr-policy-safi%3Chttps/datatracker.ietf.org/doc/html/draft-ietf-idr-sr-policy-safi-06%3E>] as described in the individual TLV/Sub-TLV sub-sections."

In this sentence, we state the SRPM(SR Policy Module). Do you have any suggestion to add SRPM in this sentence?



Editorial change

NITS from shepherd report on draft-ietf-idr-sr-policy-path-segment-13.
NIT 1-2 fixed. NIT-3 was not addressed (but optional).

NIT-3: Section 4. 1, last paragraph, sentence clarity

Error: Run-on sentence please break this sentence into 2 parts

Current:/
   The Segment sub-TLVs in the Reverse Path Segment List sub-TLV
   provides the information of the reverse SR path, which can be used
   for directing egress BFD peer to use specific path for the reverse
   direction of the BFD session [I-D.ietf-mpls-bfd-directed] or other
   applications./

New:/
   The Segment sub-TLVs in the Reverse Path Segment List sub-TLV
   provides the information of the reverse SR path. This
   Reverse Path Segment list can be used for directing egress
   BFD peer to use specific path for the reverse
   direction of the BFD session [I-D.ietf-mpls-bfd-directed] or other
   applications./

[Cheng]If I am not wrong, this has been updated? Please check https://datatracker.ietf.org/doc/html/draft-ietf-idr-sr-policy-path-segment-13#name-reverse-path-segment-list-s