A BGP Cease NOTIFICATION Subcode for Bidirectional Forwarding Detection (BFD), March 2023
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- J. Haas
- idr (rtg)
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The Bidirectional Forwarding Detection (BFD) protocol (RFC 5880) is used to detect loss of connectivity between two forwarding engines, typically with low latency. BFD is leveraged by routing protocols, including the Border Gateway Protocol (BGP), to bring down routing protocol connections more quickly than the original protocol timers.
This document defines a subcode for the BGP Cease NOTIFICATION message (Section 6.7 of RFC 4271) for use when a BGP connection is being closed due to a BFD session going down.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.