RFC 5881 · PROPOSED STANDARD · 2010
SUN · 14 JUN 2026
Bidirectional Forwarding Detection for IPv4 and IPv6
Overview
RFC 5881, “Bidirectional Forwarding Detection for IPv4 and IPv6”, is a Proposed Standard document published in June 2010 by D. Katz, D. Ward. The canonical text is published by the RFC Editor.
Abstract
This document describes the use of the Bidirectional Forwarding Detection (BFD) protocol over IPv4 and IPv6 for single IP hops. [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.
Read this RFC
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Other RFCs from 2010
- RFC 5880 Bidirectional Forwarding Detection
- RFC 5882 Generic Application of Bidirectional Forwarding Detection
- RFC 5879 Heuristics for Detecting ESP-NULL Packets
- RFC 5883 Bidirectional Forwarding Detection for Multihop Paths
- RFC 5878 Transport Layer Security Authorization Extensions
- RFC 5884 Bidirectional Forwarding Detection for MPLS Label Switched Paths
- RFC 5877 The application/pkix-attr-cert Media Type for Attribute Certificates
- RFC 5885 Bidirectional Forwarding Detection for the Pseudowire Virtual Circuit Connectivity Verification