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OSPF: A Network Routing Protocol by Phani Raj Tadimety

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Chapter 15

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Splitting the Autonomous System into Areas

The only real voyage of discovery consists not in seeking new landscapes, but in having new EYES.

Marcel Proust

This chapter defines the reach of operations, or domain, of the routing protocol of a network and discusses how the domain is kept under control by network segmentation to ensure efficient use and management of resources.

The Autonomous System Split into Areas

The term routing domain has been liberally used until now without expressly defining it. Somewhere earlier, it was implied that a routing domain is the purview of the routing protocol. A more specific definition is in order ...

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