Easy way to check is to capture the bgp update message on the spine switch and look at the path attribute >> MP_REACH_NLRI >>Network layer reachability information >>EVPN NLRI and look for route distinguishes  configured is matching with what you hav...

https://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/white-paper-c11-732453.html VXLAN bridging: VXLAN bridging is the function provided by VTEP devices to extend a VLAN or VXLAN VNI over the Layer 3 infrastructure. F...