3Com WX3000 operation manual RIP Network Adjustment and Optimization, Setting RIP preference

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The filter-policy import command filters the RIP routes received from neighbors, and the routes being filtered out will neither be added to the routing table nor be advertised to any neighbors. The filter-policy export command filters all the routes to be advertised, including the routes redistributed with the import-routecommand and routes learned from neighbors.

You can also use the filter-policy export command to filter outgoing routes redistributed from a specified routing protocol.

Setting RIP preference

Follow these steps to set RIP preference:

To do...	Use the command...		Remarks
Enter system view	system-view	—
Enter RIP view	rip	—
Set the RIP preference	preference value		Required
			100 by default

Configuring RIP to redistribute routes from another protocol

Follow these steps to configure RIP to import routes from another protocol:

To do...	Use the command...		Remarks
Enter system view	system-view		—
Enter RIP view	rip	—
Configure a default cost for	default cost value		Optional
an incoming route			1 by default
Configure RIP to	import-route protocol		Required
	[ process-id ] [ cost value
redistribute routes from			By default, RIP does not redistribute
	route-policy
another protocol			any route from other protocols.
	route-policy-name ]*

RIP Network Adjustment and Optimization

In some special network environments, some RIP features need to be configured and RIP network performance needs to be adjusted and optimized. By performing the configuration mentioned in this section, the following can be implemented:

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Changing the convergence speed of RIP network by adjusting RIP timers; Avoiding routing loops by configuring split horizon;

Packet validation in network environments with high security requirements, and Configuring RIP to unicast RIP messages on interfaces with special requirements.

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