Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 126

Creating a Prefix List Without a Sequence Number To create a filter without a specified sequence number, use the following commands. 1 Create a prefix list and assign it a unique name. CONFIGURATION mode ip prefix-list prefix-name 2 Create a prefix list filter with a deny or permit action. CONFIG-NPREFIXL mode {deny | permit} ip-prefix [ge min-prefix-length] [le max-prefix-length] The optional parameters are: • ge min-prefix-length: is the minimum prefix length to be matched (0 to 32). • le max-prefix-length: is the maximum prefix length to be matched (0 to 32). Example of Creating a Filter with System-Assigned Sequence Numbers The example shows a prefix list in which the sequence numbers were assigned by the software. 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 PREFIX LIST mode displays the two filters with the sequence numbers 5 and 10. Dell(conf-nprefixl)#permit 123.23.0.0 /16 Dell(conf-nprefixl)#deny 133.24.56.0 /8 Dell(conf-nprefixl)#show conf ! ip prefix-list awe seq 5 permit 123.23.0.0/16 seq 10 deny 133.0.0.0/8 Dell(conf-nprefixl)# To delete a filter, enter the show config command in PREFIX LIST mode and locate the sequence number of the filter you want to delete, then use the no seq sequence-number command in PREFIX LIST mode. Viewing Prefix Lists To view all configured prefix lists, use the following commands. • Show detailed information about configured prefix lists. EXEC Privilege mode show ip prefix-list detail [prefix-name] • Show a table of summarized information about configured Prefix lists. EXEC Privilege mode show ip prefix-list summary [prefix-name] Examples of the show ip prefix-list Commands The following example shows the show ip prefix-list detail command. Dell>show ip prefix detail Prefix-list with the last deletion/insertion: filter_ospf ip prefix-list filter_in: count: 3, range entries: 3, sequences: 5 - 10 seq 5 deny 1.102.0.0/16 le 32 (hit count: 0) seq 6 deny 2.1.0.0/16 ge 23 (hit count: 0) seq 10 permit 0.0.0.0/0 le 32 (hit count: 0) Access Control Lists (ACLs) 126