Router-b(config)#router ospf 1
Router-b(config-router)# network 192.168.12.0 0.0.3.255 area 0
Router-b(config-router)# network 192.168.8.0 0.0.3.255 area 1
Router-c(config)router ospf 1
Router-c(config-router)#network 192.168.12.0 0.0.3.255 area 0
Verify that OSPF is configured correctly and all OSPF routes are
listed in the routing table. On Router A the 10.1.1.0-10.1.3.0
networks should be directly connected, but not listed in the routing
table of the other routers.
On Router A add the following commands to setup mutual
redistribution between IGRP and OSPF: