Administrator Guide

Applying a Prefix List for Route Redistribution
To pass traffic through a configured prefix list, use the prefix list in a route redistribution command.
Apply the prefix list to all traffic redistributed into the routing process. The traffic is either forwarded or dropped, depending on
the criteria and actions specified in the prefix list.
To apply a filter to routes in RIP, use the following commands.
● Enter RIP mode.
CONFIGURATION mode
router rip
● Apply a configured prefix list to incoming routes. You can specify an interface.
If you enter the name of a nonexistent prefix list, all routes are forwarded.
CONFIG-ROUTER-RIP mode
distribute-list prefix-list-name in [interface]
● Apply a configured prefix list to outgoing routes. You can specify an interface or type of route.
If you enter the name of a non-existent prefix list, all routes are forwarded.
CONFIG-ROUTER-RIP mode
distribute-list prefix-list-name out [interface | connected | static | ospf]
To view the configuration, use the show config command in ROUTER RIP mode, or the show running-config rip
command in EXEC mode.
DellEMC(conf-router_rip)#show config
!
router rip
distribute-list prefix juba out
network 10.0.0.0
DellEMC(conf-router_rip)#router ospf 34
Applying a Filter to a Prefix List (OSPF)
To apply a filter to routes in open shortest path first (OSPF), use the following commands.
● Enter OSPF mode.
CONFIGURATION mode
router ospf
● Apply a configured prefix list to incoming routes. You can specify an interface.
If you enter the name of a non-existent prefix list, all routes are forwarded.
CONFIG-ROUTER-OSPF mode
distribute-list prefix-list-name in [interface]
● Apply a configured prefix list to incoming routes. You can specify which type of routes are affected.
If you enter the name of a non-existent prefix list, all routes are forwarded.
CONFIG-ROUTER-OSPF mode
distribute-list prefix-list-name out [connected | rip | static]
To view the configuration, use the show config command in ROUTER OSPF mode, or the show running-config ospf
command in EXEC mode.
DellEMC(conf-router_ospf)#show config
!
router ospf 34
network 10.2.1.1 255.255.255.255 area 0.0.0.1
distribute-list prefix awe in
DellEMC(conf-router_ospf)#
Access Control Lists (ACLs)
117