Patent ID: 8015288
Filing Date: 2011-09-06
Classification: G06F,H04L

Abstract:
1. A virtual system, which realizes virtual computing environments for performing communication processing, wherein the virtual system includes a service virtual machine which controls real physical communication devices and management interfaces of the virtual system and a user virtual machine which is the virtual machine operated by users and includes a virtual network interface card (NIC) for connecting to a real physical network through the service virtual machine and a real physical NIC, comprising: a virtual node which is provided as an opposed node of the virtual NIC and performs control processing necessary for an interface conversion process for the communication between the real physical network and the user virtual machine; a virtual node setting unit which acquires information regarding whether a data link layer communication system employed in the real physical network which is connected by the real physical NIC is the same as the communication system of the user virtual machine, and performs control processing for setting the virtual node; a virtual NIC setting unit which acquires a Media Access Control (MAC) address given to the real physical NIC when the data link layer communication system employed in the real physical network is the same as the communication system of the user virtual machine, defines the acquired MAC address to the virtual NIC, and performs control processing for setting the virtual NIC; and, a real physical NIC setting unit which changes the MAC address of the real physical NIC to the MAC address of the virtual NIC when the MAC address change is requested by the user virtual machine in a start operation of the user virtual machine, and performs control processing for setting the real physical NIC.