Dell PowerSwitch S4820T Configuration Guide for the S4820T System 9.14.1.0 - Page 119
Con an Extended IP ACL, Configuring Filters with a Sequence Number
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ip access-list standard access-list-name 2 Configure a drop or forward IP ACL filter. CONFIG-STD-NACL mode {deny | permit} {source [mask] | any | host ip-address} [count [byte] [dscp] [order] [monitor [session-id]] [fragments] When you use the log keyword, the CP logs details about the packets that match. Depending on how many packets match the log entry and at what rate, the CP may become busy as it has to log these packets' details. The following example shows a standard IP ACL in which Dell EMC Networking OS assigns the sequence numbers. The filters were assigned sequence numbers based on the order in which they were configured (for example, the first filter was given the lowest sequence number). The show config command in IP ACCESS LIST mode displays the two filters with the sequence numbers 5 and 10. Example of Viewing a Filter Sequence for a Specified Standard ACL and for an Interface DellEMC(config-route-map)#ip access standard acl1 DellEMC(config-std-nacl)#permit 10.1.0.0/16 monitor 177 DellEMC(config-std-nacl)#show config ! ip access-list standard acl1 seq 5 permit 10.1.0.0/16 monitor 177 DellEMC(config-std-nacl)# To view all configured IP ACLs, use the show ip accounting access-list command in EXEC Privilege mode. The following examples shows how to view a standard ACL filter sequence for an interface. DellEMC#show ip accounting access example interface gig 4/12 Extended IP access list example seq 15 deny udp any any eq 111 seq 20 deny udp any any eq 2049 seq 25 deny udp any any eq 31337 seq 30 deny tcp any any range 12345 12346 seq 35 permit udp host 10.21.126.225 10.4.5.0 /28 monitor 300 seq 40 permit udp host 10.21.126.226 10.4.5.0 /28 seq 45 permit udp 10.8.0.0 /16 10.50.188.118 /31 range 1812 1813 seq 50 permit tcp 10.8.0.0 /16 10.50.188.118 /31 eq 49 monitor 349 seq 55 permit udp 10.15.1.0 /24 10.50.188.118 /31 range 1812 1813 To delete a filter, enter the show config command in IP ACCESS LIST mode and locate the sequence number of the filter you want to delete. Then use the no seq sequence-number command in IP ACCESS LIST mode. Configure an Extended IP ACL Extended IP ACLs filter on source and destination IP addresses, IP host addresses, TCP addresses, TCP host addresses, UDP addresses, and UDP host addresses. The traffic passes through the filter in the order of the filter's sequence and hence you can configure the extended IP ACL by first entering IP ACCESS LIST mode, and then assigning a sequence number to the filter. Configuring Filters with a Sequence Number To configure filters with a sequence number, use the following commands. 1 Enter IP ACCESS LIST mode by creating an extended IP ACL. CONFIGURATION mode ip access-list extended access-list-name 2 Configure a drop or forward filter. CONFIG-EXT-NACL mode Access Control Lists (ACLs) 119
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