Reference Guide

132 | Access Control Lists (ACLs)
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FTOS>
FTOS>show ip prefix summary
Prefix-list with the last deletion/insertion: filter_ospf
ip prefix-list filter_in:
count: 3, range entries: 3, sequences: 5 - 10
ip prefix-list filter_ospf:
count: 4, range entries: 1, sequences: 5 - 10
FTOS>
Use a prefix list for route redistribution
To pass traffic through a configured prefix list, you must use the prefix list in a route redistribution
command. The prefix list is applied to all traffic redistributed into the routing process and 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 (RIP is supported on C and E-Series.), use either of the following
commands in the ROUTER RIP mode:
To view the configuration, use the
show config command in the ROUTER RIP mode as shown in the
example below or the
show running-config rip command in the EXEC mode.
FTOS(conf-router_rip)#show config
!
router rip
distribute-list prefix juba out
network 10.0.0.0
FTOS(conf-router_rip)#router ospf 34
To apply a filter to routes in OSPF, use either of the following commands in the ROUTER OSPF mode:
Command Syntax Command Mode Purpose
router rip
CONFIGURATION Enter RIP mode
distribute-list prefix-list-name in
[interface]
CONFIG-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.
distribute-list prefix-list-name out
[
interface | connected | static | ospf]
CONFIG-ROUTER-RIP 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.
Command Syntax Command Mode Purpose
router ospf
CONFIGURATION Enter OSPF mode