routing protocols : OSPF Hierarchy - Multiple areas

The video tutorial explains the division of large autonomous systems into smaller areas, focusing on OSPF and RIP protocols. It highlights the benefits of breaking OSPF into multiple areas, such as reducing routing table size and improving resource efficiency. The tutorial describes different router types within OSPF, including area border routers and backbone routers, and discusses the advantages of multiple areas, like hiding link changes from other areas. It also covers route summarization and its role in maintaining efficient network connectivity.

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