Configuring VRRP port tracking

In the following task steps, interface ethernet 2/4 on Router 1 (shown in the diagram below) is configured to be tracked, and if the interface fails, the VRRP priority of Router 1 is lowered by a value of 20. Router 1 is the master VRRP device for group 1 and a lower priority triggers a backup device with a higher priority, Router 2, to become the new master for Group 1. Perform this task on the device on which the tracked interface exists.

Multigroup VRRP routing topology

1. Enable VRRP globally.
   

   device(config)# protocol vrrp

2. Enter interface configuration mode and run the following command:
   

   device(config)# interface ve 10

3. Run the following command to enter group configuration mode.
   

   device(config-if-Ve-10)# vrrp-group 1

4. Enter the track command to set the track port and priority:
   

   device(config-vrrp-group-1)# track ethernet 2/4 priority 20

The following example shows how to configure an Ethernet interface on Router 2 to be tracked, and if the interface fails, the VRRP priority of Router 2 is lowered by a value of 40. Router 2 is the master VRRP device for group 2 and a lower priority triggers a backup device, Router 1, to become the new master for group 2.

device(config)# protocol vrrp
device(config)# interface ve 10
device(config-if-Ve-10)# vrrp-group 2
device(config-vrrp-group-1)# track ethernet 2/4 priority 20