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# Configuring VRRP Instances to Match ICR Requirements

Each ICR partition is managed by a unique VRRP instance. You can configure an ICR partition as the master partition using the ip vrrp priority command. VRRP is also used to detect failure in the uplink interfaces.

To configure the VRRP instance to match ICR requirements:

1. Create a VRRP instance by specifying the identification number, and associate an IP address with the identification number.
   `
   host1(config-if)#ip vrrp 1 virtual-address 3.5.1.10
   `
2. Specify the priority of the router. Assign the higher priority to the master ICR partition and a lower priority to the backup ICR partition.
   `
   host1(config-if)#ip vrrp priority 200
   `
3. Enable the router to learn the VRRP advertisement interval.
   `
   host1(config-if)#ip vrrp 1 timers-learn
   `
4. Enable the VRRP instance.
   `
   host1(config-if)#ip vrrp 1 enable
   `
5. (Optional) Configure additional VRRP instances by completing Steps 1 through 4, using unique numbering.

   Each ICR partition is managed by a unique VRRP instance. Configure additional VRRP instances only if you plan to create additional ICR partitions.

#### Related Topics

- Chapter 4, Configuring VRRP
- ip vrrp
- ip vrrp enable
- ip vrrp priority
- ip vrrp timers-learn
- ip vrrp virtual-address

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