Fixed Switch Configuration Guide 21-1
21
IPv4 Basic Routing Protocols
This chapter describes how to configure the Routing Information Protocol (RIP) and the ICMP
Router Discovery Protocol (IRDP).
Configuring RIP
Using RIP in Your Network
The fixed switches support Routing Information Protocol (RIP) Version 1 and 2. RIP is a
distance-vector routing protocol for use in small networks — it is not intended for complex
networks. RIP is described in RFC 2453. A router, running RIP broadcasts, updates at set intervals.
Each update contains paired values where each pair consists of an IP network address and an
integer distance to that network. RIP uses a hop count metric to measure the distance to a
destination and is not appropriate for situations where routes need to be chosen based on real-
time parameters such as a measured delay, reliability, or load.
The fixed switch
devices implement plain text and MD5 authentication methods for RIP.
RIP Configuration Overview
Enabling RIP on the device starts the RIP process which then begins populating its routing table
and sending and receiving routing updates. Use the router rip command in configuration
command mode to both enable RIP on the device and enter RIP router configuration mode.
Refer to Table 21-2 on page 21-3 for a list of default RIP parameter values.
RIP Router Configuration
Once in router configuration mode, you can configure the administrative distance for RIP routes
with the distance command. If several routes (coming from different protocols) are presented to
the switch, the protocol with the lowest administrative distance will be chosen for route
installation. You can change the default RIP administrative distance value of 120 with the distance
command, resetting RIP’s route preference in relation to other routes as shown in Table 21-1 on
page 21-2 below.
For information about... Refer to page...
Configuring RIP 21-1
Configuring IRDP 21-5
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