3com 8807 Reference Guide

Use undo rip split-horizon command to configure an interface not to use split 
horizon when transmitting RIP packets.

By default, an interface is enabled to use split horizon when transmitting RIP 
packets.

Normally, split horizon is necessary for reducing route loop. Only in some special 
cases, you need to disable split horizon to ensure the correct execution of 
protocols. When doing that, make sure that it is necessary.

# Specify the interface Vlan-interface 10 not to use split horizon when processing 
RIP packets.

[SW8800] interface Vlan-interface 10

 

[3Com-Vlan-interface10] undo rip split-horizon 

rip version 2 [ broadcast | multicast ]

Interface view

1: Version of RIP packets on an interface is RIP-1.

2: Version of RIP packets on an interface is RIP-2.

broadcast: Transmission mode of RIP-2 packet is broadcast.

multicast: Transmission mode of RIP-2 packet is multicast.

Use the rip version command to configure the version of RIP packets on an 
interface. Use the undo rip version command to restore the default value of RIP 
packet version on the interface.

By default, the interface RIP version is RIP-1. RIP-1 transmits packets in broadcast 
mode, while RIP-2 transmits packets in multicast mode by default.

When running RIP-1, the interface only receives and transmits RIP-1 broadcast 
packets, and receives RIP-2 broadcast packets, but does not receive RIP-2 multicast 
packets. When running RIP-2 in broadcast mode, the interface only receives and 
transmits RIP-2 broadcast packets, receives RIP-1 packets and RIP-2 multicast 
packets. When running RIP-2 in multicast mode, the interface only receives and 
transmits RIP-2 multicast packets, receives RIP-2 broadcast packets, but does not 
receive RIP-1 packets.