IPv6 Redistribution between RIPNG and OSPFv3

Redistribution for IPv6 is pretty much the same as for IPv4. The same rules apply.

I want to show you an example of IPv6 redistribution between RIPNG and OSPFv3. Here’s the topology that we will use:

In the middle, we have router R2 that will redistribute between RIPNG and OSPFv3. R1 and R3 have a loopback interface that will be advertised. Let’s configure the IPv6 addresses:

R1(config)#ipv6 unicast-routing 
R1(config)#interface loopback 0
R1(config-if)#ipv6 address 2001::1/128
R1(config-if)#exit
R1(config)#interface fastEthernet 0/0
R1(config-if)#ipv6 enable

R2(config)#ipv6 unicast-routing 
R2(config)#interface fastEthernet 0/0
R2(config-if)#ipv6 enable 
R2(config-if)#exit
R2(config)#interface fastEthernet 1/0
R2(config-if)#ipv6 enable

R3(config)#ipv6 unicast-routing 
R3(config)#interface loopback 0
R3(config-if)#ipv6 address 2001::3/128
R3(config-if)#exit
R3(config)#interface fastEthernet 0/0
R3(config-if)#ipv6 enable

This is what we’ll start with. I’m using the loopbacks to have something to advertise in RIPNG or OSPFv3. On the FastEthernet interfaces, I only need a link-local IPv6 address. Let’s configure RIPNG on R1 and R2:

R1(config)#ipv6 router rip RIPNG
R1(config-rtr)#exit
R1(config)#interface loopback 0
R1(config-if)#ipv6 rip RIPNG enable 
R1(config-if)#exit
R1(config)#interface fastEthernet 0/0
R1(config-if)#ipv6 rip RIPNG enable 

R2(config)#ipv6 router rip RIPNG
R2(config-rtr)#exit 
R2(config)#interface fastEthernet 0/0
R2(config-if)#ipv6 rip RIPNG enable

And we’ll configure OSPFv3 on R2 and R3:

R2(config)#ipv6 router ospf 1
R2(config-rtr)#router-id 2.2.2.2
R2(config-rtr)#exit 
R2(config)#interface fastEthernet 1/0
R2(config-if)#ipv6 ospf 1 area 0

R3(config)#ipv6 router ospf 1
R3(config-rtr)#router-id 3.3.3.3
R3(config-rtr)#exit
R3(config)#interface fastEthernet 0/0
R3(config-if)#ipv6 ospf 1 area 0
R3(config-if)#interface loopback 0
R3(config-if)#ipv6 ospf 1 area 0  

This is what we need on R3 and R2 to get OSPFv3 working. We’ll use the redistribute command to redistribute routes from RIPNG into OSPFv3 and vice versa:

R2(config)#ipv6 router ospf 1
R2(config-rtr)#redistribute rip RIPNG
R2(config-rtr)#exit
R2(config)#ipv6 router rip RIPNG
R2(config-rtr)#redistribute ospf 1 metric 1

This is all you have to do to redistribute everything. Let’s check the routing tables of R1 and R3:

R1#show ipv6 route rip
IPv6 Routing Table - 4 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
       U - Per-user Static route
       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
R   2001::3/128 [120/2]
     via FE80::CE04:19FF:FE67:0, FastEthernet0/0

R3#show ipv6 route ospf 
IPv6 Routing Table - 4 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
       U - Per-user Static route
       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
OE2  2001::1/128 [110/20]
     via FE80::CE04:19FF:FE67:10, FastEthernet0/0

We can verify our configuration by looking at the routing tables. Right now, we redistribute all routes. If you want, you can be a bit more specific with redistribution using route maps: