By default, MAC address learning is enabled on VXLAN Layer 2 extension tunnels. Use this command to delegate the responsibility for MAC learning on a tunnel to the Layer 3 control-plane protocol, such as BGP EVPN.
<overlay-gateway xmlns="urn:brocade.com:mgmt:brocade-tunnels"> <name>overlaygateway1</name> <site> <name>site1</name> <mac-learning> <protocol>bgp</protocol> </mac-learning> </site> </overlay-gateway>