Subject: [Idr] I-D Action: draft-ietf-idr-sr-policy-path-mtu-13.txt
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To: <[email-masked]>
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Date: Sun, 30 Nov 2025 23:17:31 -0800
List-Id: Inter-Domain Routing <idr.ietf.org>

Internet-Draft draft-ietf-idr-sr-policy-path-mtu-13.txt is now available. It
is a work item of the Inter-Domain Routing (IDR) WG of the IETF.

   Title:   Segment Routing Path MTU in BGP
   Authors: Cheng Li
            YongQing Zhu
            Ahmed El Sawaf
            Zhenbin Li
            Guanming Zeng
   Name:    draft-ietf-idr-sr-policy-path-mtu-13.txt
   Pages:   12
   Dates:   2025-11-30

Abstract:

   Segment Routing is a source routing paradigm that explicitly
   indicates the forwarding path for packets at the ingress node.  An SR
   policy is a set of SR Policy candidate paths consisting of one or
   more segments with the appropriate SR path attributes.  BGP
   distributes each SR Policy candidate path as combination of an prefix
   plus a the BGP Tunnel Encapsulation(Tunnel-Encaps) attribute
   containing an SR Policy Tunnel TLV with information on the SR Policy
   candidate path as a tunnel.  However, the path maximum transmission
   unit (MTU) information for a segment list for SR path is not
   currently passed in the BGP Tunnel-Encaps attribute. . This document
   defines extensions to BGP to distribute path MTU information within
   SR policies.

The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-idr-sr-policy-path-mtu/

There is also an HTMLized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-idr-sr-policy-path-mtu-13

A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-idr-sr-policy-path-mtu-13

Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts