# Configuring the Interface on Which the ICR Partition Resides

You can create multiple ICR partitions on an interface. For information on the number of ICR partitions that you can create, see JunosE Release Notes, Appendix A, System Maximums.

To configure the interface on which the ICR partition resides:

1. Specify a FastEthernet, GigabitEthernet, or 10–GigabitEthernet interface.
   host1(config)#interface gigabitEthernet 3/5/0 host1(config-if)#
2. Specify VLAN as the encapsulation method to create the VLAN major interface.
   host1(config-if)#encapsulation vlan
3. Create a VLAN subinterface by adding a subinterface number to the interface identification number.
   host1(config-if)#interface gigabitEthernet 3/5/0.10
4. Assign a VLAN ID for the subinterface. The router configures the subinterface whether or not the subinterface is part of the ICR partition. Use the icr-control-interface keyword to specify that an ICR partition can be configured on the the subinterface.
   host1(config-if)#vlan id 10 1 icr-control-interface
5. Assign an IP address to the VLAN subinterface.
   host1(config-if)#ip address 3.5.1.1/24

#### Related Documentation

- Configuring VRRP Instances to Match ICR Requirements
- Monitoring the Configuration of an ICR Partition Attached to an Interface