Multi-Area OSPF Lab
Three-area OSPF design with route summarization on Cisco 2911s.
3x Cisco 2911, 2x Catalyst 2960
intermediate
Design notes for a three-area topology with summarization at the ABRs.
R1(config)# router ospf 1R1(config-router)# network 10.0.0.0 0.0.0.255 area 0