Access Control Lists (ACLs) | 111When you use the log keyword, CP processor logs details about the packets that match. Depending on howmany packets match the log entry and at what rate, the CP may become busy as it has to log these packets’details.To view the rules of a particular ACL configured on a particular interface, use the show ip accountingaccess-list ACL-name interface interface command in EXEC Privilege mode as shown in the examplebelow.FTOS#show ip accounting access ToOspf interface gig 1/6Standard IP access list ToOspfseq 5 deny anyseq 10 deny 10.2.0.0 /16seq 15 deny 10.3.0.0 /16seq 20 deny 10.4.0.0 /16seq 25 deny 10.5.0.0 /16seq 30 deny 10.6.0.0 /16seq 35 deny 10.7.0.0 /16seq 40 deny 10.8.0.0 /16seq 45 deny 10.9.0.0 /16seq 50 deny 10.10.0.0 /16FTOS#The example below illustrates how the seq command orders the filters according to the sequence numberassigned. In the example, filter 25 was configured before filter 15, but the show config command displaysthe filters in the correct order.FTOS(config-std-nacl)#seq 25 deny ip host 10.5.0.0 any logFTOS(config-std-nacl)#seq 15 permit tcp 10.3.0.0 /16 anyFTOS(config-std-nacl)#show config!ip access-list standard dillingseq 15 permit tcp 10.3.0.0/16 anyseq 25 deny ip host 10.5.0.0 any logFTOS(config-std-nacl)#To delete a filter, use the no seq sequence-number command in the IP ACCESS LIST mode.If you are creating a standard ACL with only one or two filters, you can let FTOS assign a sequencenumber based on the order in which the filters are configured.The software assigns filters in multiples of 5.Note: When assigning sequence numbers to filters, keep in mind that you might need to insert anew filter. To prevent reconfiguring multiple filters, assign sequence numbers in multiples of five oranother number.
