Dell# endDell# resequence access-list ipv4 test 2 2Dell# 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 1.1.1.4Route MapsAlthough route maps are similar to ACLs and prefix lists in that they consist of a series of commands thatcontain a matching criterion and an action, route maps can modify parameters in matching packets.ACLs and prefix lists can only drop or forward the packet or traffic. Route maps process routes for routeredistribution. For example, 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 or traffic isdropped, in route maps, if a route does not match any of the route map conditions, the route is notredistributed.Implementation InformationThe implementation of route maps allows route maps with the no match or no set commands. When thereis no match command, all traffic matches the route map and the set command applies.Important Points to Remember• For route-maps with more than one match clause:• Two or more match clauses within the same route-map sequence have the same matchcommands (though the values are different), matching a packet against these clauses is a logicalOR operation.• Two or more match clauses within the same route-map sequence have different matchcommands, matching a packet against these clauses is a logical AND operation.• If no match is found in a route-map sequence, the process moves to the next route-map sequence untila match is found, or there are no more sequences.• When a match is found, the packet is forwarded and no more route-map sequences are processed.• If a continue clause is included in the route-map sequence, the next or a specified route-mapsequence is processed after a match is found.Access Control Lists (ACLs) 154
