Summarization and How to Configure Summarization
Summarization, put simply, enables a given routing protocol to minimize IP routing tables by taking steps to advertise a smaller or lesser IP route destination for a large set of subnets or networks. IP routing entries consume bandwidth of expensive links between different geographic locations, take CPU cycles on routers, and, most importantly, require memory.
To give network designers the ability to manage large networks, summarization is important for limiting or reducing IP routing tables. The most important consideration to make when summarizing any IP address space is to ensure a hierarchical design.
In a hierarchical design, IP address space is configured across any given router so that it ...
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