Reference Guide

Bidirectional Forwarding Detection (BFD) | 205
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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 following platforms z as indicated by the characters
that appear under each of the command headings.
Commands
• bfd all-neighbors
• neighbor bfd
• neighbor bfd disable
bfd all-neighbors
z
Enable BFD sessions with all neighbors discovered by Layer 3 protocols IS-IS, OSPF, or
BGP on router interfaces, and (optionally) reconfigure the default timer values.
Syntax
bfd all-neighbors
[interval interval min_rx min_rx multiplier value role {active | passive}]
Parameters
S6000
S6000
interval milliseconds
(OPTIONAL) Enter this keyword to specify non-default BFD
session parameters beginning with the transmission interval.
Range: 50 to 1000
Default: 100
min_rx milliseconds
Enter this keyword to specify the minimum rate at which the local
system would like to receive control packets from the remote system.
Range: 50 to 1000
Default: 100