Redistribution from BGP to OSPF - both withing same VRF

[Warren Sullivan]

Hi Guys,

I'm going around in circles, i can't see what is wrong here, i have essentially 3 routers, ill abbreviate to the last 5 or so characters in hostname for brevity, aco-R1 is running BGP under vrf iA-0160 as is aco-r5 - they are neighbors, all good. aco-r5 and pro-r5 are running ospf instance 2 and are neighbors, i am redistributing ospf 2 into bgp, and bgp into ospf 2.

On aco-r1 i can see the BGP route for 172.29.38.0/29, but on pro-r5 i cannot see the route for 10.79.126.164/30 being redistrubuted?

What have i missed?

BGP Neighbor on aco-r1

BGP Neighbor on aco-r5

OSPF neighbor on aco-r5

OPSF neighbor on pro-r5

BGP, OSPF and redist config on aco-r5

sh ip route on aco-r1 - can see redistrubuted route from ospf

sh ip route on pro-r5 - nothing

[David Ruess]

Hello,

On R5 its not learning the route 10.79.126.164/30 from BGP. Its directly connected. So redistributing BGP won't work. Have you tried also redistributing connected?

-David

[Warren Sullivan]

There is a loopback on aco-r1 that is being advertised to aco-r5 via BGP, see below

[MHM Cisco World]

Add 

Compatibility vrf lite

Under ospf 

And it will work

MHM

[Warren Sullivan]

Sorry, this is not an option under the ospf process on this device, it is a 1000v
thanks for your suggestion!

[MHM Cisco World · Accepted solution]

Do under ospf 

Compatibility?

Share it here 

Without this command the ospf will never redistribute bgp into ospf since down bit is set. 

MHM

[Warren Sullivan]

[MHM Cisco World]

Sorry it capability not compatible keyword 

So command must be 

Capability vrf lite

MHM

[MHM Cisco World]

To be clear here command 

Capability vrf lite to redistribute bgp LO into ospf not direct connect link between two bgp peers

Again without this command ospf not redistribute any prefix via bgp

MHM

[Warren Sullivan]

This fixed it!

[Flavio Miranda]

Hi @Warren Sullivan 

 Run "bgp redistribute-internal" in the acp-r5

[Warren Sullivan]

unfortunately this didn't fix it, thanks for the suggestion!

[David Ruess]

How is the 10.79.126.164/30 route being learned on R5. If its directly connected you may need to issue the redistribute connected command as well.

-David

[Harold Ritter]

Hi @Warren Sullivan ,

10.79.126.164/30 is a connected route on aco-r5. If you want pro-r5 to learn it via ospf, you need to configure "redistribute connected" on aco-r5 as suggested by @David Ruess .

router ospf 2 vrf IA-0160

redistribute connected subnets

Regards,

[Warren Sullivan]

this worked for the /30 but i still cannot see the loopback on aco-r1, and is leaned by aco-r5?