Specifying the key rollover and key add-remove timers

Enter the configure terminal command to access global configuration mode.
```
device# configure terminal
```
Enter the ip router-id command to specify the router ID.
```
device(config)# ip router-id 10.11.12.13
```
Enter the ipv6 router ospf command to enter OSPFv3 router configuration mode and enable OSPFv3 on the device.
```
device(config)# ipv6 router ospf
```
Enter the key-add-remove-interval command and specify the desired interval to set the timing of the authentication key add-remove interval.
```
device(config-ipv6-router-ospf-vrf-default-vrf)# key-add-remove-interval 240
```
Enter the key-rollover-interval command and specify the desired interval to set the timing of the configuration changeover.
```
device(config-ipv6-router-ospf-vrf-default-vrf)# key-rollover-interval 240
```

Example

The following example sets the key add-remove interval to 240 seconds (4 minutes) and sets the timing of the configuration changeover to 240 seconds (4 minutes).

device# configure terminal
device(config)# ip router-id 10.11.12.13
device(config)# ipv6 router ospf 
device(config-ipv6-router-ospf-vrf-default-vrf)# key-add-remove-interval 240
device(config-ipv6-router-ospf-vrf-default-vrf)# key-rollover-interval 240