I-D Action: draft-krierhorn-idr-upa-04.txt

Internet-Draft draft-krierhorn-idr-upa-04.txt is now available.

   Title:   BGP Unreachable Prefix Announcement (UPA)
   Authors: Serge Krier
            Jakub Horn
            Mihai Ciurea
            Jeff Tantsura
            Keyur Patel
            Haibo Wang
   Name:    draft-krierhorn-idr-upa-04.txt
   Pages:   14
   Dates:   2026-07-23

Abstract:

   Summarization is often used in multi-domain networks to improve
   network efficiency and scalability.  With summarization in place,
   there is a need to signal loss of reachability to an individual
   prefix covered by the summary.  This enables fast convergence by
   steering traffic away from the node which owns the prefix and is no
   longer reachable.

   This document specifies the mechanism, referred to as Unreachable
   Prefix Announcement (UPA), for networks where BGP is used to carry
   summary routes.  It is also equally beneficial for operators to share
   the unreachable prefixes.

The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-krierhorn-idr-upa/

There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-krierhorn-idr-upa-04.html

A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-krierhorn-idr-upa-04

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


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