Configure EIGRP routing on a Cisco router

Contributor Icon Contributed by qmchenry Date Icon September 23, 2003  
Tag Icon Tagged: Cisco router

EIGRP enghanced version of the IGRP that supports variable-length subnet masks and several additional features.


EIGRP uses an autonomous system number parameter in the configuration just as IGRP does. This number is arbitrary but must be the same on all routers within the autonomous system.

To configure a router to participate in EIGRP routing within autonomous system 5 and advertise routing information about the 192.168.200.0 network, use:

conf t
router eigrp 5
network 192.168.200.0
^Z

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  • abanks
    By default, EIGRP will auto-summary to classful boundaries, which can cause odd operation.

    This code will prevent summarization for AS 100:
    router eigrp 100
    no auto-summary
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