Vxlan

VXLAN defines a MAC-in-UDP encapsulation scheme where the original Layer 2 frame has a VXLAN header added and is then placed in a UDP-IP packet. With this MAC-in-UDP encapsulation, VXLAN tunnels Layer 2 network over Layer 3 network. The VXLAN packet format is shown



 VXLAN uses VXLAN tunnel endpoint (VTEP) devices to map tenants’ end devices to VXLAN segments and to perform VXLAN encapsulation and de-encapsulation.
VXLAN Packet Forwarding Flow VXLAN uses stateless tunnels between VTEPs to transmit traffic of the overlay Layer 2 network through the Layer 3 transport network.