Troubleshooting guide

Troubleshooting RIP
6-101
Split Horizon is Disabled
If routing loops are occurring between neighboring RIP routers or the size of routing
updates to routing tables are large, the problem may be that split horizon is disabled.
Follow these steps to enable split horizon:
1. To determine if split horizon is disabled, use the show ip route command in
Privileged EXEC mode on the remote router.
2. View the
Split horizon is enabled message in the show ip route
command output.
3. If split horizon is not enabled, enter the ip split-horizon command in Router
Interface Configuration mode on the remote router interface. For example, to
enable split horizon on ethernet interface 0, enter the following commands:
RDN(config)#interface ethernet 0
RDN(config-if)#ip split-horizon
Handling RIP Version Inconsistencies
The following sections provide instructions for resolving inconsistent versions of RIP
running between two RIP routers:
• Misconfigured Version of RIP Running on BSR
• Misconfigured Version of RIP Running on Specified Interface
Misconfigured Version of RIP Running on BSR
If the BSR is configured globally with the wrong version of RIP, remote RIP
interfaces discard received RIP packets or do not receive RIP packets.
Note: The default split-horizon setting for all interfaces is enabled.