Command Reference Guide

3Com Router 3000 Ethernet Family

Chapter 2 RIP Configuration Commands

3Com Corporation

2-19

control the receipt and the transmission of RIP packets respectively on an interface.

The former command equals the functional combination of the latter two commands.

Related command: rip input and rip work.

Example

# Disable the interface serial1/0/0 to transmit RIP packets.

[3Com ] interface serial1/0/0

[3Com -serial1/0/0] undo rip output

2.1.23 rip split-horizon

Syntax

rip split-horizon

undo rip split-horizon

View

Interface view

Parameter

None

Description

Use the rip split-horizon command to configure an interface to use split horizon when

transmitting RIP packets.

Use the 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 routing loops. Only in some special

cases should split horizon be disabled to ensure the correct execution of protocols. For

example, on an NBMA network, you need to disable split horizon on FR-encapsulated

main interfaces and point-to-multipoint subinterfaces to allow an interface to send the

routes learned from those interfaces.

Example

# Specify the interface serial1/0/0 not to use split horizon when processing RIP packets.

[3Com ] interface serial1/0/0

[3Com -serial1/0/0] undo rip split-horizon