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Most of the RIP configuration errors
involve an incorrect network statement, discontiguous subnets, or
split horizons. One highly effective command for finding RIP update
issues is the debug ip rip
command. The
debug ip rip
command displays RIP routing updates as they are sent and received.
The example in Figure
 shows the
output from a router using the
debug ip rip
command after receiving a RIP update. After receiving and processing
the update, the router sends the newly updated information out its two
RIP interfaces. The output shows the router is using RIP version 1 and
broadcasts the update (broadcast address 255.255.255.255). The number
in parenthesis represents the source address encapsulated into the IP
header of the RIP update.
There are several key indicators to
look for in the output of the
debug ip rip
command. Problems such as discontiguous subnetworks or duplicate
networks can be diagnosed with this command. A symptom of these issues
would be a router advertising a route with a metric that is less than
the metric it received for that network.
Other commands to troubleshoot RIP:
- show ip rip database
- show ip protocols {summary}
- show ip route
- debug ip rip {events}
- show ip interface brief
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Lab Activity
Lab Exercise: Troubleshooting RIP
This lab is to set up an IP addressing
scheme using class B networks.
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Lab Activity
e-Lab Activity: Troubleshooting RIP Update Issues
This lab is to perform a basic configuration of the
router Pretoria.
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Lab Activity
e-Lab Activity: Troubleshooting RIP
In this lab, the students will be troubleshooting the Routing
Information Protocol on the routers Gadsen and Birmingham.
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Web Links