Perform the following steps to configure EIGRP for IP:

1. Use the following to enable EIGRP and define the autonomous system:

   router(config)#router eigrp autonomous-system-number

   The autonomous system number is used to identify all routers that belong within the internetwork. This value must match all routers within the internetwork.

2. Indicate which networks belong to the EIGRP autonomous system on the local router by using the following command:

   router(config-router)#network network-number

   The network-number is the network number that determines which interfaces of the router are participating in EIGRP and which networks are advertised by the router.

   The network command configures only connected networks. For example, network 3.1.0.0, which is on the far left of the main Figure, is not directly connected to Router A. Consequently, that network is not part of the configuration of Router A.

3. When configuring serial links using EIGRP, it is important to configure the bandwidth setting on the interface. If the bandwidth for these interfaces is not changed, EIGRP assumes the default bandwidth on the link instead of the true bandwidth. If the link is slower, the router may not be able to converge, routing updates might become lost, or suboptimal path selection may result. To set the interface bandwidth, use the following syntax:

   router(config-if)#bandwidth kilobits

   The bandwidth command is only used by the routing process and should be set to match the line speed of the interface.

4. Cisco also recommends adding the following command to all EIGRP configurations:

   router(config-if)#eigrp log-neighbor-changes

   This command enables the logging of neighbor adjacency changes to monitor the stability of the routing system and to help detect problems.

Lab Activity Lab Exercise: Configuring EIGRP Routing This lab is to setup an IP addressing scheme for the network.

   

Lab Activity e-Lab Activity: Configuring EIGRP In this lab, the student will configure EIGRP routing.