Cisco Catalyst 9500 Series

Configuring BFD Support for IS-IS for All Interfaces
To configure BFD on all IS-IS interfaces that support IPv4 routing, perform the steps in this section.
Procedure
PurposeCommand or Action
Enables privileged EXEC mode.enable
Step 1
Example:
Device> enable
•
Enter your password if prompted.
Enters global configuration mode.configure terminal
Example:
Device# configure terminal
Step 2
Specifies an IS-IS process and enters router
configuration mode.
router isis area-tag
Example:
Device(config)# router isis tag1
Step 3
Enables BFD globally on all interfaces associated with
the IS-IS routing process.
bfd all-interfaces
Example:
Device(config-router)# bfd
all-interfaces
Step 4
(Optional) Returns the router to global configuration
mode.
exit
Example:
Device(config-router)# exit
Step 5
(Optional) Enters interface configuration mode.
interface type number
Example:
Device(config)# interface
fastethernet 6/0
Step 6
(Optional) Enables support for IPv4 routing on the
interface.
ip router isis [ tag ]
Example:
Device(config-if)# ip router isis
tag1
Step 7
Routing Configuration Guide, Cisco IOS XE Everest 16.6.x (Catalyst 9500 Switches)
11
Configuring Bidirectional Forwarding Detection
How to Configure Bidirectional Forwarding Detection