Running OSPF through the ACI Fabric

[Mahmoud Nossair]

Hi All,

We are connecting a Firewall and Router to the ACI service leafs (topology attached), and in order to exchange routes between the Firewall and the Router we are going to run the OSPF between them using the ACI Fabric as a broadcast L2 domain (either by Extending the EPG out or Extending the bridge domain out of the ACI fabric).

So Is it possible to run OSPF between Firewall and Router through the ACI Fabric (using L2 extend)?

Is this a valid and approved design by Cisco?

[DerrickTJ]

Yes you can do that. I do that with my Router's BGP peering to my firewalls. It's just a VLAN with a fancy coat of paint.

[Mahmoud Nossair]

Thanks Derrick  for your reply, The BGP will work normally because it use normal TCP/179 connection so it will run without any issues,

But in My case i talking specifically about the OSPF as it uses the Multicast for the peering process,  so how ACI will deal with the Multicast. 

Also i need to confirm if this a valid and approved design by Cisco?

[DerrickTJ]

Have you tried enabling multicast on the bridge domain?