OSPF Virtual Links

OSPF virtual links are used to connect an area to the backbone (Area 0) when a direct physical connection is not possible. They can also be used to connect two disconnected parts of the backbone.

Configuration Example:

router ospf 1
 area 1 virtual-link 2.2.2.2
  • area [transit-area-id] virtual-link [neighbor-router-id]: Configures a virtual link.