Routing Information Protocol (RIP) | 751Control RIP routing updatesBy default, RIP broadcasts routing information out all enabled interfaces, but you can configure RIP tosend or to block RIP routing information, either from a specific IP address or a specific interface. Tocontrol which devices or interfaces receive routing updates, you must configure a direct update to onerouter and configure interfaces to block RIP updates from other sources.To control the source of RIP route information, use the following commands, in the ROUTER RIP mode:Another method of controlling RIP (or any routing protocol) routing information is to filter the informationthrough a prefix list. A prefix lists is applied to incoming or outgoing routes. Those routes must meet theconditions of the prefix list; if not, FTOS drops the route. Prefix lists are globally applied on all interfacesrunning RIP. Configure the prefix list in the PREFIX LIST mode prior to assigning it to the RIP process.For configuration information on prefix lists, see Chapter 17, IP Access Control Lists, Prefix Lists, andRoute-maps, on page 47.To apply prefix lists to incoming or outgoing RIP routes, use the following commands in the ROUTERRIP mode:In addition to filtering routes, you can add routes from other routing instances or protocols to the RIPprocess. With the redistribute command syntax, you can include OSPF, static, or directly connected routesin the RIP process.Command Syntax Command Mode Purposeneighbor ip-address ROUTER RIP Define a specific router to exchange RIP informationbetween it and the Dell Force10 system.You can use this command multiple times to exchangeRIP information with as many RIP networks as youwant.passive-interface interface ROUTER RIP Disable a specific interface from sending or receivingRIP routing information.Command Syntax Command Mode Purposedistribute-list prefix-list-name in ROUTER RIP Assign a configured prefix list to all incomingRIP routes.distribute-list prefix-list-name out ROUTER RIP Assign a configured prefix list to all outgoingRIP routes.
