To configure a virtual link, perform the
following steps:
- Configure OSPF, as described
previously in the " Using and Configuring OSPF Multiarea
Components " section.
- On each router that will use the
virtual link, create the "virtual link" configuration.
The routers that make the links are the ABR that connects the
remote area to the transit area and the ABR that connects the
transit area to the backbone area.

router(config-router)#area
area-id
virtual-link router-id 
If you do not know the neighbor's
Router ID, you can Telnet to it and type the show ip ospf command.
The results are shown in Figure .
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