Reference Guide

Bidirectional Forwarding Detection (BFD) | 305
Example
Figure 11-1. bfd interval Command Example
bfd neighbor
c e
Establish a BFD session with a neighbor.
Syntax
bfd neighbor ip-address
Parameters
Defaults
None
Command Modes
INTERFACE
Command
History
Related
Commands
bfd protocol-liveness
e
Enable the BFD protocol liveness feature.
Syntax
bfd protocol-liveness
Defaults
Disabled
Command Modes
CONFIGURATION
Command
History
Usage
Information
Protocol Liveness is a feature that notifies the BFD Manager when a client protocol (e.g OSPF, ISIS) is
disabled. When a client is disabled, all BFD sessions for that protocol are torn down. Neighbors on the
remote system receive an Admin Down control packet and are placed in the Down state. Peer routers
might take corrective action by choosing alternative paths for the routes that originally pointed to this
router.
FTOS(conf-if-gi-0/3)#bfd interval 250 min_rx 300 multiplier 4 role passive
FTOS(conf-if-gi-0/3)#
ip-address
Enter the IP address of the neighbor in dotted decimal format (A.B.C.D).
Version 8.2.1.0 Introduced on E-Series ExaScale
Version 7.6.1.0 Introduced on C-Series
Version 7.5.1.0 Added support for VLAN and port-channel interfaces on E-Series.
Version 7.4.1.0 Introduced on E-Series
show bfd neighbors Display BFD neighbor information on all interfaces or a specified interface.
Version 7.4.1.0 Introduced on E-Series