VMware NSX has three replication modes: unicast, hybrid, and multicast. The replication mode defines how VMware NSX VTEP VXLAN handles traffic when a virtual machine sends a frame to a MAC address or sends layer 2 BUM traffic. VTEP VXLAN uses an existing layer 2 mechanism for flooding and learning MAC addresses. When a VTEP needs to send a packet to multiple hosts, this will be considered as broadcast, unknown unicast, and multicast (also known as BUM) traffic:
- Broadcast: This refers to sending data from one source device to all devices in a local network. The sender sends a broadcast frame with a destination MAC address of FF:FF:FF:FF:FF:FF and the packet will be received by all hosts on that local layer 2 network. ...
