Chapter 19 Configuring Bidirectional Forwarding Detection

Configuring BFD

 

Command

Purpose

Step 3

 

 

Router(config)# interface vlan1

Enters interface configuration mode.

 

Router(config-if)#

 

Step 4

 

 

Router(config-if) ip router isis

Enables support for IPv4 routing on the interface.

 

[tag]

 

Step 5

 

 

Router(config-if) isis bfd

Enables BFD on the interfaces.

Step 6

 

 

exit

Exits configuration mode.

 

Example:

 

 

Router(config)# exit

 

 

Router#

 

 

 

 

Note You can use the show bfd neighbors and show clns interface commands to verify your configuration.

Configuring BFD for IS-IS for All Interfaces

Complete these steps to configure BFD for IS-IS on all interfaces.

 

Command

Purpose

Step 1

 

 

enable

Enables privileged EXEC mode.

 

 

Enter your password if prompted.

 

Example:

 

 

Router> enable

 

Step 2

 

 

configure terminal

Enters global configuration mode.

 

Example:

 

 

Router# configure terminal

 

Step 3

 

 

Router(config)# interface vlan1

Enters interface configuration mode.

 

Router(config-if)#

 

Step 4

 

 

Router(config-if) ip router isis

Enables support for IPv4 routing on the interface.

 

[tag]

 

Step 5

 

 

Router(config-router)# bfd

Enables BFD globally on all interfaces associated with the IS-IS routing

 

all-interfaces

process.

Step 6

 

 

Router(config-router)# exit

Exits the interface.

 

Router(config)#

 

 

 

 

 

 

Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide

 

 

 

 

 

 

OL-23826-09

 

 

19-5

 

 

 

 

 

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Cisco Systems A9014CFD manual Configuring BFD for IS-IS for All Interfaces, 19-5