Overview on VXLAN


(Virtual Extensible Local Area Network)

Logical Switch reproduce switching functionality (Unicast, multicast or broadcast) in virtual environment which completely decouple from underlying hardware.

Logical Switches are similar to VXLAN in that they provides network connections to which you can attach virtual machine. The VM's can communicate with each other over VXLAN if they are connected to some logical switches.


The DLR support logical switches which are backed by VXLAN.

  • First-hop routing is handling on the host, the traffic is switched to appropriate logical switch. If the destination is at another host. the ethernet frame is placed in the VXLAN frame & forward.

  • Only one VXLAN LIF can connect to logical switch. The next-hop can be an NSX Edge service gateway.

  • VXLAN LIF can span all distributed switch in the transport zone.


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