Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module Configuration Guide - Page 380

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, To do this, use the following commands. Command Syntax ip prefix-list prefix-name seq sequence-number {deny |permit} ip-prefix [ge min-prefix-length] [le max-prefix-length] Command Mode Usage CONFIGURATION Create a prefix list and assign it a unique name. You are in PREFIX LIST mode. CONFIG- PREFIX LIST 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 the IP Access Control Lists, Prefix Lists, and Route-maps chapter in the FTOS Configuration Guide. To apply prefix lists to incoming or outgoing OSPF routes, use the following commands in CONFIGURATION-ROUTER OSPF mode. Command Syntax distribute-list prefix-list-name in [interface] Command Mode CONFIG-ROUTER-OSPF-id distribute-list prefix-list-name out [connected CONFIG-ROUTER-OSPF-id | ospf | rip | static] Usage Apply a configured prefix list to incoming OSPF routes. Assign a configured prefix list to outgoing OSPF routes. 378 | Open Shortest Path First (OSPFv2)