FIELD: physics, control.
SUBSTANCE: invention relates to a network system. Specifically, a controller establishes information of a virtual machine and information of a server on which the virtual machine is operating. The controller detects the server information below a switch using the switch. If the established server information and the detected server information match, the controller establishes a stream record for a packet, having the virtual machine assignment for said switch based on the information of the virtual machine on the server. The virtual machine then begins communication.
EFFECT: providing a network system in which a controller controls identification information of a virtual machine operating on a server below a switch, and identification information of the server and establishes a stream record for the switch concurrent to generation of the virtual machine and migration operation; the controller establishes the stream record for the switch in advance before the beginning of the communication of the virtual machine.
7 cl, 5 dwg
