Hello all,
We have submitted draft‑li‑idr‑bgp‑sr‑policy‑bfd‑extension-03 to the IDR WG. The document proposes to carry S‑BFD monitoring parameters together with an SR Policy Candidate Path in BGP SR Policy [RFC9830]. With this approach, an SR Policy and its corresponding monitoring session can be provisioned in one step, eliminating separate configuration operations. The information of this draft is shown below. Comments are welcome. Note that a PCE WG draft solves the same problem, draft-ietf-pce-pcep-bfd-parameters, https://datatracker.ietf.org/doc/draft-ietf-pce-pcep-bfd-parameters/. Name: draft-li-idr-bgp-sr-policy-bfd-extension Revision: 03 Title: BGP SR Policy Extensions for BFD Configuration Date: 2026-10-29 Group: Individual Submission Pages: 13 URL: https://www.ietf.org/archive/id/draft-li-idr-bgp-sr-policy-bfd-extension-03.txt Status: https://datatracker.ietf.org/doc/draft-li-idr-bgp-sr-policy-bfd-extension/ HTML: https://www.ietf.org/archive/id/draft-li-idr-bgp-sr-policy-bfd-extension-03.html HTMLized: https://datatracker.ietf.org/doc/html/draft-li-idr-bgp-sr-policy-bfd-extension Diff: https://author-tools.ietf.org/iddiff?url2=draft-li-idr-bgp-sr-policy-bfd-extension-03 Abstract: Segment Routing (SR) Policies require fast failure detection for Candidate Paths (CPs) to enable rapid rerouting and high availability. Currently, the provisioning of SR Policies and the configuration of the associated Seamless Bidirectional Forwarding Detection (S-BFD) sessions are performed independently. This often necessitates separate mechanisms (e.g., manual configuration, NETCONF, or additional signaling) to associate S-BFD sessions with the SR Policies, resulting in complex and error-prone operations. This document defines extensions to BGP SR Policy for the simultaneous provisioning of SR Policy CPs and their S-BFD configuration parameters during policy advertisement. The extensions include optional sub-TLVs within the Tunnel Encapsulation Attribute to carry S-BFD configuration parameters (e.g., discriminators, intervals, multipliers). These extensions simplify deployment in distributed or controller- based environments, reduce configuration overhead, and enhance operational efficiency for SR-based traffic engineering. Best Regards, Zhenqiang Li China Mobile
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