Patent ID: 8819267

Claim:
A method of transmitting a data frame, comprising: providing a first server that is capable of network virtualization and that is linked through a local network to a second server that is capable of network virtualization and a third server that is not capable of network virtualization; receiving, by the first server from a first server virtual machine (VM) located on the first server, a data frame with a destination address; and in response to the destination address of the data frame indicating that the data frame is being sent to a second server VM located on the second server that is capable of network virtualization, attaching a network virtualization header to the data frame and transmitting the data frame to the second server; and in response to the destination address of the data frame indicating that the data frame is being sent to a third server VM located on the third server that is not capable of network virtualization, transmitting the data frame to the third server without attaching a network virtualization header to the data frame.