I-D Action: draft-li-idr-bgp-failure-propagation-convergence-02.txt

Internet-Draft draft-li-idr-bgp-failure-propagation-convergence-02.txt is now
available.

   Title:   BGP Failure Propagation (BGP-FP) for Enhancing Control-Plane Convergence
   Authors: Yuhang Li
            Yahui Li
            Xia Yin
            Han Zhang
            Xingang Shi
   Name:    draft-li-idr-bgp-failure-propagation-convergence-02.txt
   Pages:   24
   Dates:   2026-08-27

Abstract:

   This document specifies BGP Failure Propagation (BGP-FP), an
   infrastructure and protocol that improves inter-domain routing
   convergence by accelerating the removal of stale (invalid) routes.
   BGP-FP uses (1) an Agent deployed per Autonomous System (AS) to
   detect inter-AS reachability changes and to configure local routers,
   (2) a logically centralized Repository to store and selectively
   forward AS reachability state, and (3) BGP Large Communities as a
   "route freshness" marker.  Agents validate and apply Repository
   updates to filter routes that traverse AS pairs whose reachability
   has been lost or that violate the originating AS's forwarding intent,
   reducing route-flap propagation in the control plane.

   This document clarifies that "AS reachability" refers to the
   reachability between two ASes, not to the state of individual
   physical or logical links within an AS.  If multiple links exist
   between two ASes, the failure of a single link that does not break
   overall AS-to-AS reachability does not trigger the BGP-FP mechanism.

   A new Repository deployment model is introduced, suggesting that the
   Repository be operated by a newly established organization composed
   of Tier-1 ASes and Regional Internet Registries (RIRs), using a
   distributed deployment with Byzantine fault-tolerant consensus and
   rotating leadership.

The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-li-idr-bgp-failure-propagation-convergence/

There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-li-idr-bgp-failure-propagation-convergence-02.html

A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-li-idr-bgp-failure-propagation-convergence-02

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


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