redistribute ospf>rip route-map issues

Unanswered Question
Oct 22nd, 2008

When i redistribute ospf to rip using route-map using ip-prefix, it doesnt work at all. when i use access-list, it works!.

This config doesnt work

router rip

version 2

redistribute ospf 1 metric 1 route-map OSPF-RIP

ip prefix-list OSPF-RIP seq 5 permit 172.25.48.0/24

ip prefix-list OSPF-RIP seq 10 permit 172.25.49.0/24

ip prefix-list OSPF-RIP seq 15 permit 172.25.51.0/24

ip prefix-list OSPF-RIP seq 16 deny 0.0.0.0/0 le 32

!

route-map OSPF-RIP permit 1

match ip address prefix-list OSPF-RIP

!

This works.

router rip

version 2

redistribute ospf 1 metric 1 route-map OSPF-RIP

access-list 10 permit 172.25.48.0 0.0.0.255

access-list 10 permit 172.25.49.0 0.0.0.255

access-list 10 permit 172.25.51.0 0.0.0.255

access-list 10 deny any

!

route-map OSPF-RIP permit 1

match ip address 10

any thought why route-map with ip-prefixes doesnt work?

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Giuseppe Larosa Wed, 10/22/2008 - 09:17

Hello Francisco,

have you tried to use the implicit deny by removing the last entry in the prefix-list ?

use

ip prefix-list OSPF-RIP seq 5 permit 172.25.48.0/24

ip prefix-list OSPF-RIP seq 10 permit 172.25.49.0/24

ip prefix-list OSPF-RIP seq 15 permit 172.25.51.0/24

However, this is an interesting issue when the prefix-lists were introduced in 12.0 they were supported only with BGP I think and we had to use ACLs in the route-maps for redistribution.

Hope to help

Giuseppe

francisco_1 Wed, 10/22/2008 - 09:28

hey Giuseppe,

yes i removed the implicit deny, still doesnt work.

Francisco

ajagadee Wed, 10/22/2008 - 10:47

Hello Franco,

What type of Chassis is this and what is the version that you are running?

Also, after configuring the redistribution/route-map with prefix-list, can you clear the routes and see if the routes get redistributed into RIP.

I came across this Bug ID that might be some interest to you.

Bug ID CSCsl47915

Redistribution of ospf in rip with prefix-list not working properly

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/release/notes/OL_4164.html

Regards,

Arul

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