Command Line Reference Guide

Bidirectional Forwarding Detection (BFD) | 281
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Bidirectional Forwarding Detection
(BFD)
Overview
Bidirectional Forwarding Detection (BFD) is a detection protocol that provides fast forwarding path
failure detection. The FTOS implementation is based on the standards specified in the IETF Draft
draft-ietf-bfd-base-03 and supports BFD on all Layer 3 physical interfaces including VLAN interfaces
and port-channels.
BFD is supported on the C-Series and E-Series, where indicated by the
c and e characters under
command headings.
BFD is supported on E-Series ExaScale
e
x
with FTOS 8.2.1.0 and later.
Commands
• bfd disable
• bfd enable (Configuration)
• bfd enable (Interface)
• bfd interval
• bfd all-neighbors
• bfd neighbor
• bfd protocol-liveness
• clear bfd counters
• debug bfd
• ip route bfd
• isis bfd all-neighbors
• show bfd counters
• show bfd neighbors
• vrrp bfd
bfd disable
c e
Disable all VRRP sessions in a VRRP group.
Syntax
bfd disable
Re-enable BFD using the command no bfd disable.
Defaults
BFD is disabled by default.
Command Modes
INTERFACE VRRP