1.4 Routing Protocol
1.4.9 IGRP configuration

The router igrp command selects IGRP as a routing protocol.

Command   Description
router igrp autonomous-system Identifies the IGRP router processes that will share routing information.

The network command specifies any directly connected networks to be included.

Command    Description
network network-number Specifies a directly connected network number, not a subnet number or individual address.