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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
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Chapter 35 Configuring IP Unicast Routing
Configuring BFD
Enabling BFD Routing Protocol Clients
After you configure BFD parameters on an interface, you can start a BFD session for one or more routing
protocols. You must first enable routing by entering the ip routing global configuration command on the
switch. Note that there can be more than one way to start a BFD session on an interface, depending on
the routing protocol.
• Configuring BFD for OSPF, page 35-76
• Configuring BFD for IS-IS, page 35-77
• Configuring BFD for BGP, page 35-79
• Configuring BFD for EIGRP, page 35-79
• Configuring BFD for HSRP, page 35-80
Configuring BFD for OSPF
When you start BFD sessions for OSPF, OSPF must be running on all participating devices.You can
enable BFD support for OSPF by enabling it globally on all OSPF interfaces or by enabling it on one or
more interfaces.
Configuring BFD for OSPF Globally
Beginning in privileged EXEC mode, follow these steps to configure OSFP BFD globally, and to
optionally disable it on specific interfaces:
To disable OSPF BFD on all interfaces, enter the no bfd all-interfaces router configuration command.To
disable it on an interface, enter the no ip osfp bfd or the ip ospf bfd disable interface configuration
command on the interface.
If you want to run OSPF BFD on only one or a few interfaces, you can enter the ip ospf bfd interface
configuration command on those interfaces instead of enabling it globally. See the next procedure.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
router ospf process- id Specify an OSPF process, and enter router configuration mode.
Step 3
bfd all-interfaces Enable BFD globally on all interfaces associated with the OSPF routing
process.
Step 4
exit (Optional) Return to global configuration mode if you want to disable BFD
on one or more OSPF interfaces.
Step 5
interface interface-id (Optional) Specify an interface, and enter interface configuration mode.
Step 6
ip ospf bfd disable (Optional) Disable BFD on the specified OSPF interface. Repeat Steps 5
and 6 for all OSPF interfaces on which you do not want to run BFD
sessions.
Step 7
end Return to privileged EXEC mode.
Step 8
show bfd neighbors [detail] Verify the configuration.
Step 9
copy running-config startup-config (Optional) Save your entries in the configuration file.
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