Unknown Unicast Handling
OTV control protocol advertises MAC address reachability information between OTV edge devices. If the MAC address is in a remote data center, OTV control protocol will map the MAC address to the destination IP address of the join interface of the remote data center.
When the OTV edge device receives a frame destined to a MAC address that is not in the MAC address table, the Layer 2 traffic is flooded out the internal interfaces. This is the normal behavior of a classical Ethernet interface; however, that doesn’t happen via the overlay. It is assumed that no silent hosts are available and eventually the OTV edge device ...
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