Cisco Catalyst 4500 Series Configuration Manual page 817

Chapter 37 Configuring Bidirection Forwarding Detection
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See the following sections for tasks for configuring BFD support for OSPF:
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Configuring BFD Support for OSPF for All Interfaces
To configure BFD for all OSPF interfaces, perform the steps in this section.
If you do not want to configure BFD on all OSPF interfaces and would rather configure BFD support
specifically for one or more interfaces, see the
Interfaces" section on page
Prerequisites
OSPF must be running on all participating switches.
The baseline parameters for BFD sessions on the interfaces over which you want to run BFD sessions to
BFD neighbors must be configured. See the
section on page 37-8
To configure BFD support for OSPF for all interfaces:
Command or Action
Step 1
enable
Switch> enable
Step 2
configure terminal
Switch# configure terminal
Step 3
Switch ospf process-id
Switch(config)# router ospf 4
Step 4
bfd all-interfaces
Switch(config-router)# bfd all-interfaces
Step 5
end
Switch(config-if)# end
Step 6
show bfd neighbors [details]
Switch# show bfd neighbors detail
Step 7
show ip ospf
Switch# show ip ospf
OL-25340-01
You can enable BFD on all the interfaces for which OSPF is routing by using the bfd all-interfaces
command in router configuration mode. You can disable BFD support on individual interfaces using
the ip ospf bfd [disable] command in interface configuration mode.
You can enable BFD on a subset of the interfaces for which OSPF is routing by using the ip ospf
bfd command in interface configuration mode.
Configuring BFD Support for OSPF for All Interfaces, page 37-11
Configuring BFD Support for OSPF for One or More Interfaces, page 37-12
37-12.
for more information.
How to Configure Bidirectional Forwarding Detection
"Configuring BFD Support for OSPF for One or More
"Configuring BFD Session Parameters on the Interface"
Purpose
Enables privileged EXEC mode.
• Enter your password if prompted.
Enters global configuration mode.
Specifies an OSPF process and enters router configuration
mode.
Enables BFD globally on all interfaces associated with the
OSPF routing process.
Exits interface configuration mode and returns the switch to
privileged EXEC mode.
(Optional) Displays information that can help verify if the
BFD neighbor is active and displays the routing protocols
that BFD has registered.
(Optional) Displays information that can help verify if BFD
for OSPF has been enabled.
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
(optional)
(optional)
37-11