Hello all,
I really need your advise.
I have a legacy network with multiple routers connected. Most of them in the Area 0.
I have ACI multipod with 2 pods to migrate to.
What makes it tricky is:
- 2 sites (single core switch for each) (A,B) need to be connected to both pods (Area 0)
- MPLS (E,F) routers need to be connected to local pods (Area 0)
- HA ASA with Redundant interfaces (Area 0)
The Idea is to deploy L3out for each of them. *(I have enough Leafs to have different L3outs for A,B,E,F).
For MPLS I will use tagging (with deny route-map) for MPLS/BGP to avoid routes advertising back to ACI.
For ASA - as we have redundant interfaces there are going to be different primary IPs but same secondary IP.
I'm a bit concerned about using 0.0.0.0/0 with Export and Aggregate across all the L3outs. I've tried 0.0.0.0/1 and 128.0.0.0/1 - it didn't work. Could you please advise is there any tricks of using these subnets instead of 0.0.0.0/0 and is there any possible issues having OSPF Area 0s across ACI.
Kind regards,
Paul