AI, ML, Development + Cisco Learning Blog Learning about Machine Learning, Artificial Intelligence, related devlopment topics and formerly Routing and Switching, Datacenter, Security and other topics, CCIE #23664, Frank Wagner

This is an simple example of redistributing ospf to rip and vica versa.

A Borderrouter having two interfaces. One Interface in the OSPF area 0 and one interface in the RIP area.

interface Ethernet0
ip address 192.168.3.2 255.255.255.0
!
interface Serial1
ip address 192.168.4.1 255.255.255.0
!

router ospf 1
log-adjacency-changes
redistribute rip
network 192.168.3.0 0.0.0.255 area 0
default-metric 64000
!
router rip
redistribute ospf 1
network 192.168.4.0
default-metric 4

Configuring Routing from ospf to rip is quite easy. Just use the „rediribute rip“ command. And maybe the „default-metric“ command.

With the redistribution from ospf to rip you have use also a default-metric. I took 4.

And then you will see, that like a magic update, the routes appear under both routing areas.

With the distribute-list command you can control what kind of updates go into other routing tables. What is injected into the routing table and what does stay just there waiting.

Here is a short example. If you don’t want network 192.168.5.0/24 to be distributed into rip, then add the access-list and the distribute-list command. Here is the example:

router rip
redistribute ospf 1
network 192.168.4.0
default-metric 4
distribute-list 10 out Ethernet0
!
ip http server
ip classless
!
!
access-list 10 deny 192.168.5.0 0.0.0.255
access-list 10 permit any any