When DvR is enabled on a Controller, it initiates ARP requests for traffic to be routed to unknown destination hosts.
DvR enabled Controllers learn ARP requests from:
DvR enabled Leaf nodes (here the Leaf node owns the ARPs)
its own local UNI ports. Here, the controller owns the ARPs
other DvR enabled Controllers
DvR enabled Leaf nodes learn ARP requests from:
its own local UNI ports (here the Leaf node owns the ARPs)
other DvR enabled Leaf nodes (that own the ARPs) and respond to ARP requests on their UNI ports
DvR enabled Controllers (that own the local UNI ARPs)
Controllers only distribute ARP entries that are locally learned on its own UNI ports, to other DvR enabled nodes in the domain.