Tag Archives: OSPF Area Border Router

Multi-Area OSPF – Redundancy, Route Summarization, and LSA Filtering

In this lab, all routers except for R4 and R5 are Cisco 3725 routers [IOS 12.4(15)T10]. Routers R4 and R5 are Cisco 7200 routers [IOS 12.4(24)T]. Below is the network diagram for this lab.

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