Chapter 5. Dynamic Routing

As indicated in Chapter 4, “Static Routing,” the main problem with static routing is that it does not respond to topology changes, which can lead to traffic loss during a link or device failure. In a large network with frequent topology changes, dynamic routing is preferred.

In the dynamic routing world, routing information is exchanged dynamically among peers (or neighbors) with regard to one or more routing domains. A routing domain is an internetwork (or part of a network) enclosed in a common administrative boundary. Routing protocols inside the domain are called Interior Gateway Protocols (IGP), which are in contrast to Exterior Gateway Protocols, which are used between domains. A routing domain is also called an ...

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