NETWORK CONTROL SYSTEM, ROUTER VIRTUALIZATION DEVICE, NETWORK CONTROL METHOD, ROUTER VIRTUALIZATION METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To solve the problem of possibility of incapability of managing/maintaining a network in a way similar to the case of using an existing physical router when the existing physical router is replaced with a virtual router.SOLUTION: A network control system includes: a router for controlling a path between a plurality of networks; a switch connected to a virtual network in a network; and a router virtualization device that connects with a router and a switch and provides the router as a plurality of virtual routers for controlling a path between a plurality of virtual networks. The router virtualization device transfers a packet input from the switch to the router; and transfers a packet input from the router to the switch on the basis of an identifier granted according to a predetermined virtual router of the plurality of virtual routers.SELECTED DRAWING: Figure 1