3-7z The filter-policy import command filters the RIP routes received from neighbors, and the routesbeing filtered out will neither be added to the routing table nor be advertised to any neighbors.z The filter-policy export command filters all the routes to be advertised, including the routesredistributed with the import-route command and routes learned from neighbors.z You can also use the filter-policy export command to filter outgoing routes redistributed from aspecified routing protocol.Setting RIP preferenceFollow these steps to set RIP preference:To do... Use the command... RemarksEnter system view system-view —Enter RIP view rip —Set the RIP preference preference value Required100 by defaultConfiguring RIP to redistribute routes from another protocolFollow these steps to configure RIP to import routes from another protocol:To do... Use the command... RemarksEnter system view system-view —Enter RIP view rip —Configure a default cost foran incoming route default cost value Optional1 by defaultConfigure RIP toredistribute routes fromanother protocolimport-route protocol[ process-id ] [ cost value |route-policyroute-policy-name ]*RequiredBy default, RIP does not redistributeany route from other protocols.RIP Network Adjustment and OptimizationIn some special network environments, some RIP features need to be configured and RIP networkperformance needs to be adjusted and optimized. By performing the configuration mentioned in thissection, the following can be implemented:z Changing the convergence speed of RIP network by adjusting RIP timers;z Avoiding routing loops by configuring split horizon;z Packet validation in network environments with high security requirements, andz Configuring RIP to unicast RIP messages on interfaces with special requirements.
