A BGP Cease NOTIFICATION Subcode for Bidirectional Forwarding Detection
RFC 9384, “A BGP Cease NOTIFICATION Subcode for Bidirectional Forwarding Detection”, is a Proposed Standard document published in March 2023 by J. Haas. The canonical text is published by the RFC Editor.
Abstract
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.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 9384 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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