Abstract: A communication control device that controls a plurality of communication devices in a network system includes: a receiver, a processor and a transmitter. The receiver receives a request pertaining to use of data generated by the data generation device from a user device. The processor determines a route between the data generation device and the user device, specifies first and second communication devices that are implemented at both ends of an overlapped route between a first route corresponding to a first request and a second route corresponding to a second request, and determines, based on the first request and the second request, a function to be executed by at least one of the first and second communication devices. The transmitter transmits an instruction including information for identifying the function determined by the processor to at least one of the first and second communication devices.

Abstract: A communication control device that controls a plurality of communication devices in a network system includes: a receiver, a processor and a transmitter. The receiver receives a request pertaining to use of data generated by the data generation device from a user device. The processor determines a route between the data generation device and the user device, specifies first and second communication devices that are implemented at both ends of an overlapped route between a first route corresponding to a first request and a second route corresponding to a second request, and determines, based on the first request and the second request, a function to be executed by at least one of the first and second communication devices. The transmitter transmits an instruction including information for identifying the function determined by the processor to at least one of the first and second communication devices.

Abstract: A contract assignment switching apparatus includes a memory and a processor configured to send a notification to switch an assignment of identification information corresponding to one contract for communication through a telephone network, at a switching time of the assignment of the identification information, to a first terminal device to which the identification information is assigned before the switching time and a second terminal device to which the identification information is assigned after the switching time, and request the first terminal device and the second terminal device to rewrite information with respect to the contract stored in the first terminal device and the second terminal device respectively so as to switch the assignment of the identification information from the first terminal device to the second terminal device in accordance with a response to the notification from each of the first terminal device and the second terminal device.

Abstract: A control apparatus executes configuration processing that includes applying filters for blocking input and output of a test packet to ports associated with the packet forwarding devices, except for one or more ports on an assumed forwarding route in a section targeted for a forwarding status determination and configuring the packet forwarding device located at an end port of the section so that the test packet that arrives at the end port is forwarded to the control apparatus, executes communication processing that includes transmitting the test packet from the communication circuit to a start port of the section, and executes determination processing that includes determining that packet forwarding is performed normally in the section, upon receipt of the test packet via the communication circuit after the transmission of the test packet.