I think I can use the shared subnets under a BD when I need an inter-VRF communication on ACI. But I wonder how I can set up a communication between Tenants on ACI when a project requires that type of communication for a while.
Thanks in advance.
Thank you and for using the Cisco ACI support forums and welcome. Thats a very good question. The officially supported way to accomplish inter Tenant communications is to create a shared subnet under the EPG. At this point, each vrf or tenant should be able to see a leaked routed in the routing table with a static entry pointing to the spine-proxy/overlay network. Then from one tenant, create a contract to be provided and then export it, finally, in the destination tenant, create a consumed contract interface.