OSPF Configuration Example is an example of an autonomous system using OSPF (Open Shortest Path First) routers. The details of this network follow.
Area 0 is the backbone area. It is located at the headquarters and has the following characteristics:
Area 5 is connected to the backbone area by way of ABR 1 and ABR 2. It is located in Chicago and has the following characteristics:
Area 6 is a stub area connected to the backbone by way of ABR 1. It is located in Los Angeles and has the following characteristics:
Configuration for ABR 1 and Configuration for IR 1 provide two router configurations for the example in OSPF Configuration Example.