SERVER, PHYSICAL NODE, LOAD DISTRIBUTION METHOD AND PROGRAM

PROBLEM TO BE SOLVED: To prevent performance decrease due to load increase of a mechanism which provides virtualized environment, in a server which provides virtualized environment.SOLUTION: A server includes a virtualized environment providing unit that provides a client with virtualized environment including a virtual machine and a virtual switch, a load monitoring unit for monitoring the loaded condition of the virtualized environment providing unit, and a load distribution control unit. If a value indicating the loaded condition of the virtualized environment providing unit exceeds a predetermined threshold, packet processing in the virtualized environment providing unit is distributed to a predetermined physical node between the virtual switch and the client.