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5-21
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
OL-23435-03
Chapter 5 Configuring Bidirectional Forwarding Detection
Configuring BFD
DETAILED STEPS
Configuring BFD on VRRP
You can configure BFD for the Virtual Router Redundancy Protocol (VRRP). The active and standby
VRRP routers track each other through BFD. If BFD on the standby VRRP router detects that the active
VRRP router is down, the standby VRRP router treats this event as an active time rexpiry and takes over
as the active VRRP router.
The show vrrp detail will show this event as BFD@Act-down or BFD@Sby-down.
BEFORE YOU BEGIN
Ensure that you are in the correct VDC (or use the switchto vdc command).
Enable the BFD feature. See the “Enabling the BFD Feature” section on page 5-7.
Configure the BFD session parameters. See the “Configuring Global BFD Parameters” section on
page 5-8 or the “Configuring BFD on an Interface” section on page 5-9.
Enable the VRRP feature. See the Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration
Guide, Release 5.x, for more information.
SUMMARY STEPS
1. configure terminal
Command Purpose
Step 1
configure terminal
Example:
switch# configure terminal
switch(config)#
Enters configuration mode.
Step 1
hsrp bfd all-interfaces
Example:
switch# hsrp bfd all-interfaces
(Optional) Enables or disables BFD on all HSRP
interfaces. The default is disabled.
Step 2
interface int-if
Example:
switch(config)# interface ethernet 2/1
switch(config-if)#
Enters interface configuration mode. Use the ?
keyword to display the supported interfaces.
Step 3
hsrp bfd
Example:
switch(config-if)# hsrp bfd
(Optional) Enables or disables BFD on an HSRP
interface. The default is disabled.
Step 4
show running-config hsrp
Example:
switch(config-if)# show running-config
hsrp
(Optional) Displays the HSRP running configuration.
Step 5
copy running-config startup-config
Example:
switch(config-if)# copy running-config
startup-config
(Optional) Saves this configuration change.
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