Technical data

BLADE OS 5.1 Application Guide
166
 Chapter 11: OSPF BMD00136, November 2009
6. Define the stub area.
7. Attach the network interface to the backbone.
8. Attach the network interface to the transit area.
9. Configure the virtual link.
The nbr router ID configured in this step must be the same as the router ID that was configured for
switch #1 in Step 2 on page 163.
Other Virtual Link Options
 You can use redundant paths by configuring multiple virtual links.
 Only the endpoints of the virtual link are configured. The virtual link path may traverse
multiple routers in an area as long as there is a routable path between the endpoints.
>> (config-router-ospf)# area 2 area-id 0.0.0.2
>> (config-router-ospf)# area 1 type stub
>> (config-router-ospf)# area 1 enable
>> (config-router-ospf)# exit
>> # interface ip 1
>> (config-ip-if)# ip ospf area 1
>> (config-ip-if)# ip ospf enable
>> (config-ip-if)# exit
>> # interface ip 2
>> (config-ip-if)# ip ospf area 2
>> (config-ip-if)# ip ospf enable
>> (config-ip-if)# exit
>> # router ospf
>> (config-router-ospf)# area-virtual-link 1 area 1
>> (config-router-ospf)# area-virtual-link 1 neighbor-router 10.10.10.1
>> (config-router-ospf)# area-virtual-link 1 enable