| 7.3 |  | IGRP |
| 7.3.6 |  | Migrating RIP to IGRP |

| With the creation of IGRP in the early 1980s, Cisco Systems was the first company to solve the problems associated with using RIP to route datagrams between interior routers. IGRP determines the best path through the internetwork by examining the bandwidth and delay of the networks between routers. IGRP converges faster than RIP, thereby avoiding the routing loops caused by disagreement over the next routing hop to be taken. Further, IGRP does not share the hop count limitation of RIP. As a result of this and other improvements over RIP, IGRP enabled many large, complex, topologically diverse internetworks to be deployed. These are the steps to follow to convert from RIP to IGRP. Verify existing routing protocol (RIP) on the routers to be converted. Configure IGRP on RouterA and RouterB Enter show ip protocols on RouterA and RouterB Enter show ip route on RouterA and RouterB
| Lab Activity Lab Exercise: Default Routing with RIP and IGRP This lab is to configure a default route and use RIP to propagate this default information to other routers.
| Lab Activity e-Lab Activity: Configuring Default Routing with RIP and IGRP In this lab, the students will configure a default route and use RIP to propagate this default information to other routers.
| Web Links Configuring RIP http://www.cisco.com/en/US/products/sw/ iosswrel/ps1831/ products_configuration_guide_ chapter09186a00800d97f7.html#xtocid13