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160 | IP Access Control Lists (ACL), Prefix Lists, and Route-mapsw w w . d e l l . c o m | s u p p o r t . d e l l . c o m Figure 8-20. Resequencing RemarksRoute MapsRoute-maps are supported on platforms: c e sLike ACLs and prefix lists, route maps are composed of a series of commands that contain a matchingcriterion and an action, yet route maps can change the packets meeting the criterion. ACLs and prefix listscan only drop or forward the packet or traffic. Route maps process routes for route redistribution. Forexample, a route map can be called to filter only specific routes and to add a metric.Route maps also have an “implicit deny.” Unlike ACLs and prefix lists, however, where the packet ortraffic is dropped, in route maps, if a route does not match any of the route map conditions, the route is notredistributed.Implementation InformationThe FTOS implementation of route maps allows route maps with no match command or no set command.When there is no match command, all traffic matches the route map and the set command applies.FTOS(config-ext-nacl)# show config!ip access-list extended testremark 4 XYZremark 5 this remark corresponds to permit any host 1.1.1.1seq 5 permit ip any host 1.1.1.1remark 9 ABCremark 10 this remark corresponds to permit ip any host 1.1.1.2seq 10 permit ip any host 1.1.1.2seq 15 permit ip any host 1.1.1.3seq 20 permit ip any host 1.1.1.4FTOS# endFTOS# resequence access-list ipv4 test 2 2FTOS# show running-config acl!ip access-list extended testremark 2 XYZremark 4 this remark corresponds to permit any host 1.1.1.1seq 4 permit ip any host 1.1.1.1remark 6 this remark has no corresponding ruleremark 8 this remark corresponds to permit ip any host 1.1.1.2seq 8 permit ip any host 1.1.1.2seq 10 permit ip any host 1.1.1.3seq 12 permit ip any host 1.1.1.4