Two agencies independently used 10.10.0.0/16 inside their own networks and now onboard to the same EVPN-VXLAN fabric. What enables that overlapping addressing?
Select an answer to reveal the explanation.
Short Explanation
Overlapping 10-nets are fine when each agency lives in its own routing instance—like two towns reusing house numbers on different streets. Smash them into one table and BGP (and your weekend) explode. Separate VRFs are what make reuse legal.
Full Explanation
Independent routing instances provide separate forwarding/routing tables, allowing tenants to reuse identical prefixes without conflict in the overlay control plane (with unique RDs distinguishing BGP paths). A shared VLAN with proxy-ARP hacks, identical RDs, or disabling Type-5 does not correctly enable safe overlap. Overlapping addressing is a classic reason municipal fabrics adopt VRF multitenancy.