Configuring VRRP port tracking

Configuring port tracking on an exit path interface and setting a priority on a VRRP device enables VRRP to monitor the interface. If the interface goes down, the device priority is lowered and another backup device with a higher priority assumes the role of master.

About this task

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.

Procedure

Enable VRRP globally.
```
device(config)# protocol vrrp
```
Enter interface configuration mode and run the following command:
```
device(config)# interface ve 10
```
Run the following command to enter group configuration mode.
```
device(config-if-Ve-10)# vrrp-group 1
```

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

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

Example

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