Route maps add to that redistribution capability by allowing you to match specific routes and set or change more attributes whenredistributing those routes.In the following example, the redistribute command calls the route map static ospf to redistribute only certain static routes intoOSPF. According to the route map static ospf, only routes that have a next hop of Tengigabitethernet interface 1/1 and that have ametric of 255 are redistributed into the OSPF backbone area.NOTE: When re-distributing routes using route-maps, you must create the route-map defined in the redistribute commandunder the routing protocol. If you do not create a route-map, NO routes are redistributed.Example of Calling a Route Map to Redistribute Specified Routesrouter ospf 34default-information originate metric-type 1redistribute static metric 20 metric-type 2 tag 0 route-map staticospf!route-map staticospf permit 10match interface TenGigabitEthernet 1/1match metric 255set level backboneConfigure a Route Map for Route TaggingOne method for identifying routes from different routing protocols is to assign a tag to routes from that protocol.As the route enters a different routing domain, it is tagged. The tag is passed along with the route as it passes through different routingprotocols. You can use this tag when the route leaves a routing domain to redistribute those routes again. In the following example, theredistribute ospf command with a route map is used in ROUTER RIP mode to apply a tag of 34 to all internal OSPF routes that areredistributed into RIP.Example of the redistribute Command Using a Route Tag!router ripredistribute ospf 34 metric 1 route-map torip!route-map torip permit 10match route-type internalset tag 34!Continue ClauseNormally, when a match is found, set clauses are executed, and the packet is then forwarded; no more route-map modules are processed.If you configure the continue command at the end of a module, the next module (or a specified module) is processed even after a matchis found. The following example shows a continue clause at the end of a route-map module. In this example, if a match is found in theroute-map “test” module 10, module 30 is processed.NOTE: If you configure the continue clause without specifying a module, the next sequential module isprocessed.Example of Using the continue Clause in a Route Map!route-map test permit 10match commu comm-list1set community 1:1 1:2 1:3set as-path prepend 1 2 3 4 5continue 30!Access Control Lists (ACLs) 119
