Patent ID: 8396986
Filing Date: 2013-03-12
Classification: G06F,H04L,Y02D

Abstract:
1. A method of virtual machine migration in a network configuration in which a first LAN is connected to a first node located on a first network for routing packets in accordance with routing information, in which a second LAN is connected to a second node located on the first network, and in which a second network is connected to a third node located on the first network, the method of virtual machine migration comprising: under a condition where communication between a virtual machine running on a first server connected to the first LAN and a client connected to the second network is made through the first node and the third node, migrating the virtual machine to a second server connected to the second LAN without changing an address thereof on the first network; performing a setting change in the third node in synchronization with migration of the virtual machine; changing a route for the communication between the virtual machine and the client so that the communication there between is made through the second node and the third node in accordance with routing information of the first network; and enabling the client to continue communicating with the virtual machine that has been migrated to the second server, wherein, before completion of migration of the virtual machine, advertising notification of an address of the virtual machine is provided to the second LAN.