Assigning interfaces to an area

To assign a loopback interface to an area with the IP address of 10.5.0.0, perform the following task:

Enter the configure terminal command to access global configuration mode.
```
device# configure terminal
```
Enter the interface command and specify an interface.
```
device(config)# interface loopback 2
```
Enter the ip ospf area command followed by the IP address of the area.
```
device(config-Loopback-2)# ip ospf area 10.5.0.0
```

The following example assigns a loopback interface to an area with the IP address of 10.5.0.0.

device# configure terminal
device(config)# interface loopback 2
device(config-Loopback-2)# ip ospf area 10.5.0.0