CCIE Practical Studies: Security (CCIE Self-Study)

Summary

This chapter looked at EIGRP support of Cisco IOS software. EIGRP is a classless routing protocol that provides enhancements to the IGRP protocol originally developed by Cisco. You started out by examining EIGRP's need to form adjacencies with neighbors to create the tables required by DUAL. These tables—the neighbor table and the topology table—and the routing table can be viewed with the appropriate show command. You read about many optional configuration items such as route control, redistribution, and split horizon. The chapter ended with a look at EIGRP by examining commands used for troubleshooting.