Bidirectional Forwarding Detection
RFC 5880, “Bidirectional Forwarding Detection”, is a Proposed Standard document published in June 2010 by D. Katz, D. Ward. It has since been updated by RFC 7419, RFC 7880, RFC 8562, RFC 9747. The canonical text is published by the RFC Editor.
Abstract
This document describes a protocol intended to detect faults in the bidirectional path between two forwarding engines, including interfaces, data link(s), and to the extent possible the forwarding engines themselves, with potentially very low latency. It operates independently of media, data protocols, and routing protocols. [STANDARDS-TRACK]
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 5880 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 5879 Heuristics for Detecting ESP-NULL Packets
- RFC 5881 Bidirectional Forwarding Detection for IPv4 and IPv6
- RFC 5878 Transport Layer Security Authorization Extensions
- RFC 5882 Generic Application of Bidirectional Forwarding Detection
- RFC 5877 The application/pkix-attr-cert Media Type for Attribute Certificates
- RFC 5883 Bidirectional Forwarding Detection for Multihop Paths
- RFC 5876 Updates to Asserted Identity in the Session Initiation Protocol
- RFC 5884 Bidirectional Forwarding Detection for MPLS Label Switched Paths