Dell Force10 S4820T S4820T Configuration Guide - Page 712

www.dell.com | support.dell.com Filter routes To filter routes, use prefix lists. OSPF applies prefix lists to incoming or outgoing routes. Incoming routes must meet the conditions of the prefix lists, and if they do not, OSPF does not add the route to the routing table. Configure the prefix list in CONFIGURATION PREFIX LIST mode prior to assigning it to the OSPF process. Command Syntax Command Mode Usage ip prefix-list prefix-name seq sequence-number {deny |permit} ip-prefix [ge min-prefix-length] [le max-prefix-length] CONFIGURATION CONFIG- PREFIX LIST Create a prefix list and assign it a unique name. You are in PREFIX LIST mode. Create a prefix list with a sequence. number and a deny or permit action. 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). For configuration information on prefix lists, refer to IP Access Control Lists, Prefix Lists, and Route-maps chapter in the FTOS Configuration Guide. Use the following commands in CONFIGURATION-ROUTER OSPF mode to apply prefix lists to incoming or outgoing OSPF routes Command Syntax distribute-list prefix-list-name in [interface] distribute-list prefix-list-name out [connected | isis | rip | static] Command Mode Usage CONFIG-ROUTEROSPF-id CONFIG-ROUTEROSPF-id Apply a configured prefix list to incoming OSPF routes. Assign a configured prefix list to outgoing OSPF routes. 712 | Open Shortest Path First (OSPFv2)