Abstract: A virtual-machine managing apparatus includes a delay storage unit that stores delay times between a plurality of managers managing a virtual machine; a route extractor that extracts a migration route from a source manager to a target manager based on the delay times between the managers stored in the delay storage unit such that the delay times between the managers are equal to or shorter than a threshold; and a migration controller that migrates the virtual machine from the source manager to the target manager through the migration route while maintaining the operation of the virtual machine.

Abstract: A virtual-machine managing apparatus includes a delay storage unit that stores delay times between a plurality of managers managing a virtual machine; a route extractor that extracts a migration route from a source manager to a target manager based on the delay times between the managers stored in the delay storage unit such that the delay times between the managers are equal to or shorter than a threshold; and a migration controller that migrates the virtual machine from the source manager to the target manager through the migration route while maintaining the operation of the virtual machine.

Abstract: An AP managing server manages wireless LAN apparatuses wirelessly connected to an access terminal. The wireless LAN apparatuses are provided for each communication service (VoIP communication, HTTP communication) in a single subnet and a route connecting to the access terminal is made redundant for each communication service. The AP managing apparatus controls a route to wirelessly connect the access terminal to a wireless LAN apparatuses that supports the communication service requested by the access terminal.