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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Chapter 35 Configuring IP Unicast Routing
Configuring BFD
To disable IS-IS BFD on an interface, enter the no isis bfd or the isis bfd disable interface configuration
command on the interface.
This is an example of configuring BFD for IS-IS on a single interface:
Switch(config)# router is-is tag1
Switch(config-router)# exit
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# isis bfd
Configuring BFD for BGP
When you start BFD sessions for BGP, BGP must be running on all participating devices. You enter the
IP address of the BFD neighbor to enable BFD for BGP.
Beginning in privileged EXEC mode, follow these steps to enable BGP BFD:
To disable BGP BFD, enter the no neighbor ip-address fall-over bfd router configuration command.
Configuring BFD for EIGRP
When you start BFD sessions for EIGRP, EIGRP must be running on all participating devices.You can
enable BFD support for EIGRP by globally enabling it on all EIGRP interfaces or by enabling it on one
or more interfaces.
Beginning in privileged EXEC mode, follow these steps follow these to configure EIGRP BFD:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
router bgp as-tag Specify a BGP autonomous system, and enter router configuration mode.
Step 3
neighbor ip-address fall-over bfd Enable BFD support for fallover on the BFD neighbor.
Step 4
end Return to privileged EXEC mode.
Step 5
show bfd neighbors [detail]
>
show ip bgp neighbor
Verify the configuration.
Display information about BGP connections to neighbors.
Step 6
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
router eigrp as-number Specify an EIGRP autonomous system number, and enter router
configuration mode.
Step 3
log-adjacency changes [detail] Configure the switch to send a system logging message when an EIGRP
neighbor goes up or down.
Step 4
bfd {all-interfaces | interface
interface-id}
Enable BFD for EIGRP.
• Enter all-interfaces to globally enable BFD on all interfaces
associated with the EIGRP routing process
• Enter interface interface-id to enable BFD on a per-interface basis for
one or more interfaces associated with the EIGRP routing process.
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