2 EIGRP Configuration

With the theory out of the way, we can move on to more practical matters, such as how to configure EIGRP. This chapter covers getting the protocol going, configuring summaries and summary methods, logging various state changes, and using other configuration options you might encounter. The commands and configurations discussed here are for Cisco routers (the only routers that support EIGRP). We’ll hold off on design concepts and issues in relation to these configuration options until Chapter 3.

Starting and Running EIGRP

Starting EIGRP on a Cisco router is very simple; two commands will suffice. To start EIGRP running with an AS (autonomous system) number or process ID of 100 for the network, we could type

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