RIPv2 Commands

Enabling RIPv2:

ROUTER(config)#router rip
ROUTER(config-router)#version 2
ROUTER(config-router)#network <network id>

Verifying RIPv2:

ROUTER#show ip route rip

ROUTER#show ip protocols

ROUTER#show ip rip database

Troubleshooting RIPv2:

ROUTER#debug ip rip [events]

Pre-requisite: Routing Information Protocol (RIP) V1 & V2, Configuring RIP Versions 1 and 2 in Cisco.

RIPv2 is a classless, distance-vector routing protocol (DVRP). It is a timer-driver routing protocol. It uses User Datagram Protocol (UDP) as a transport protocol and port 520. It uses hop count as the metric with 15 as the maximum metric and 16 as the infinite to remove the previously installed route i.e., to perform route poisoning which is a method of quickly forgetting outdated routing information from the neighbor router’s routing table. RIPv2 supports both plain text and MD5 authentication.

RIPv2 multicast address is 224.0.0.9. It relies on periodic full routing updates instead of partial updates. In the case of on-demand circuits, RIPv2 sends full updates once and then remains silent until some changes occur in the topology under the RIP routing domain. It also sends triggered updates when routes change. Route tags function in RIPv2 allows it to tag routes as they are redistributed. It supports the configuration of the next-hop IP address for a route.