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CHAPTER 4
Configuring RIP
Overview
RIP Metric
Copyright © 2010, Juniper Networks, Inc.
This chapter describes how to configure the Routing Information Protocol (RIP) on your
E Series router; it contains the following sections:
Overview on page 201
Platform Considerations on page 202
References on page 202
Features on page 203
Before You Run RIP on page 206
Configuration Tasks on page 206
Enabling RIP on Dynamic IP Interfaces on page 218
Clearing Dynamic RIP Interfaces on page 219
Using RIP Routes for Multicast RPF Checks on page 219
Configuring the BFD Protocol for RIP on page 220
Remote Neighbors on page 221
Monitoring RIP on page 224
RIP is an interior gateway protocol (IGP) typically used in small, homogeneous networks.
RIP uses distance-vector routing to route information through IP networks.
Distance-vector routing requires that each router simply inform its neighbors of its routing
table. For each network path, the receiving router picks the neighbor advertising the
lowest metric, then adds this entry into its routing table for readvertisement.
Any host that uses RIP is assumed to have interfaces to one or more networks. These
networks are considered to be directly connected networks. RIP relies on access to certain
information about each of these networks. The most important information is the
network's metric.
RIP uses the hop count as the metric (also known as cost) to compare the value of
different routes. The hop count is the number of routers that data packets must traverse
between RIP networks. Metrics range from 0 for a directly connected network to 16 for
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