RIP and RIPng

Overview

RIP is an IGP that uses a distance-vector algorithm to determine the best route to a destination, using hop count as the deciding factor. In order for the protocol to provide complete information about routing, every device in the domain must participate in the protocol. RIP, a UDP-based protocol, updates its neighbors, and the neighbors update their neighbors. RIP advertises IPv4 routing information, and RIPng advertises IPv6 routing information.

Unlike OSPF and other link-state protocols, RIP directly advertises reachability information to its neighbors. RIP advertises reachability information by sending prefix, mask, and either hop count or cost metric data. Each device running the RIP protocol advertises all RIP devices periodically by sending RIP update PDUs. The route with the lowest metric is advertised as the best route.

The NFM-P supports the configuration of RIPv1 and RIPv2 on network and access interfaces, as well as on IES and VPRN subscriber interfaces and group interfaces.

The NFM-P supports the configuration of IPv6 addresses for RIP on the base routing instance of the 7750 SR (chassis modes C and D, and chassis modes A and B with mixed mode enabled) and the 7705 SAR-Hm.