To create an exit point from all the tenants using the common tenant after removing RT-2 and RT-3

devices, the following two configuration tasks must be completed:

Update L3Out ExtEPG Subnet: The L3Out ExtEPG subnet in the common tenant should be updated

with the flag “Shared Route Control Subnet” and “Aggregate Shared Routes” (Option C). This

configuration allows for the sharing of routes between different tenants through a common exit

point.

Mark Subnets and Attach Contract: All subnets should be marked with the flag “Shared between

VRFs,” and contract Ctr-3 should be attached as a provider to all the EPGs (Option D). This ensures

that all EPGs can provide services under contract Ctr-3 across different VRFs, facilitating inter-tenant

communication via shared routes. Reference := (Implementing Cisco Application Centric

Infrastructure Official Cert Guide)