Abstract: A VNF operation apparatus is a processing apparatus that relocates data processing functions to another apparatus to continue data processing and includes: a storage unit configured to store information indicating a communication relationship between apparatuses; an estimation unit configured to calculate, based on the information indicating the communication relationship, an estimation value of a transfer delay of data generated during relocation for a plurality of schedulings having different orders of relocation of the data processing functions; a scheduling unit configured to select a scheduling for which the estimation value calculated by the estimation unit is minimized, and sets, based on the selected scheduling, an order of relocation of the data processing functions and a start timing of relocation of the data processing functions; and a relocation unit configured to relocate VNFs to the other apparatus in accordance with the order and the timing set by the scheduling unit.

Abstract: When the load becomes high, an identification unit (301) of a second packet forwarding device (30) identifies an application of a new flow. Then, a determination unit (302) determines whether or not distribution of new flow is necessary, based on the flow characteristic of the application and the type of the high load. Then, when distribution of the new flow is necessary, a decision unit (303) acquires a list of second packet forwarding devices (30) having a low load from the load monitoring device (10), and decides a second packet forwarding device (30) as the distribution destination. Then, a control unit (304) performs a route control for guiding the flow to the second packet forwarding device (30) which is the distribution destination.

Abstract: In a transfer path change system for changing a transfer path of a flow in a network, a first packet processing device; a second packet processing device; and a supervision device for supervising migration processing of packet processing data used by the first packet processing device to the second packet processing device, are included. The second packet processing device receives the packet processing data; stores a packet arriving at the second packet processing device during transfer of the packet processing data; and processes the packet stored and transferring the processed packet to a destination. The supervision device instructs a third packet processing device, which performs transfer processing of the packet processing data next, to perform the transfer processing of the packet processing data with completion of the processing of a packet for a specific flow among packets of a plurality of flows stored as a trigger.

Abstract: A communication system (1) includes a terminal information acquisition unit configured to acquire version information of an OS of a terminal (10), a comparison unit configured to compare a version of the OS of the terminal (10) acquired by the terminal information acquisition unit with a latest version of the corresponding OS, and a setting unit configured to set, when the version of the OS of the terminal (10) is not the latest version, a path along which traffic of the terminal (10) passes through a security appliance (5), and set, when the version of the OS of the terminal (10) is the latest version, a path along which the traffic of the terminal (10) does not pass through the security appliance (5).

Abstract: A packet communication device connected to one or more paths includes a routing unit that distributes packets received from a terminal to any one of the one or more paths, and a control unit that acquires an IP address of the terminal and sets an application rule for packet processing in the routing unit on the basis of the IP address.

Abstract: A resource amount estimation device includes: an acquisition unit configured to acquire, in response to a request for allocation of a resource, a measurement value of an amount of the resource, a measurement time of the measurement value, and statistical information relating to the resource; and a calculation unit configured to input a measurement value acquired by the acquisition unit and an elapsed time from the measurement time to a scheduled allocation time of the resource into a model that estimates the resource amount in the future on the basis of the statistical information and to calculate an estimation value of the resource amount at the scheduled allocation time, and thus increases the possibility of resource allocation appropriate to a point in time when the resource is allocated being performed.

Abstract: An application information storage unit configured to store information obtained by associating application information including flow characteristics of an application of a flow constituted by a packet with a flow identifier for identifying the flow of the packet, an acquisition unit configured to acquire, in a case where an input port receives a packet, application information of a flow constituted by the packet from the application information storage unit, and an output unit configured to output the packet received by the input port to a packet transfer apparatus in a load state indicating that a load due to the flow of the flow characteristics is light among a plurality of packet transfer apparatuses according to the flow characteristics included in the application information acquired by the acquisition unit are provided.

Abstract: A storage unit configured to store information regarding flow characteristics indicating whether a flow constituted by a packet is a flow having a tendency to have a large number of short packets or a flow having a tendency to have a large number of long packets in association with destination information of the packet, a determination unit configured to, in a case where an input port receives a packet, determine flow characteristics of a flow constituted by the packet on the basis of the storage unit, and an output unit configured to output the packet received by the input port to a packet transfer apparatus in a load state indicating that a load due to the flow of the flow characteristics is light among a plurality of packet transfer apparatuses according to the flow characteristics determined by the determination unit are provided.

Abstract: A control apparatus includes a setting unit configured to perform a setting for forwarding a packet destined for first software to a second computer on a switch on a communication path from a first computer to the second computer during a migration of the first software from the first computer to the second computer, the first computer being a computer in which the first software and second software configured to communicate with the first software run, and a deletion unit configured to delete the setting from the switch when the migration of the first software is completed. Thus, the control apparatus shortens the time during which the setting of data forwarding remains at the switch.

Abstract: A VNF operation apparatus (10) is a processing apparatus that relocates data processing functions to another apparatus to continue data processing and includes: a storage unit (12) configured to store information indicating a communication relationship between apparatuses; an estimation unit (132) configured to calculate, based on the information indicating the communication relationship, an estimation value of a transfer delay of data generated during relocation for a plurality of schedulings having different orders of relocation of the data processing functions; a scheduling unit (133) configured to select a scheduling for which the estimation value calculated by the estimation unit (132) is minimized, and sets, based on the selected scheduling, an order of relocation of the data processing functions and a start timing of relocation of the data processing functions; and a relocation unit (134) configured to relocate VNFs to the other apparatus in accordance with the order and the timing set by the schedulin

Abstract: An IoT device accommodation GW includes an alive monitoring time management unit and a communication unit. The alive monitoring time management unit sets a monitoring cycle for an IoT device. The communication unit transmits the monitoring cycle set by the alive monitoring time management unit to the IoT device.

Abstract: A transfer device (10) includes: a storage unit (12) that stores a management table (121) having an entry including a transfer address, an output port, and a timer; a communication unit (11) that has a plurality of ports and transmits and receives a packet; an address retrieval unit (132) that refers to the management table (121) and retrieves an entry using a transmission source address of a packet as a key when receiving the packet, changes an output destination port of a packet in which the transmission source address is set as a transmission destination to a reception port of the packet and sets a timer of the entry with respect to the entry when the timer of the retrieved entry is not set, and does not change a content of the entry when the timer of the retrieved entry is set; and a transfer processing unit (131) that transfers the packet from an output port of an entry of the packet of the management table (121).

Abstract: An optical line terminal (OLT) detects content distribution conditions in terminals, and performs control for performing switching to distribution to each terminal using an individual virtual local area network (VLAN) or distribution to a plurality of terminals by broadcasting using a broadcasting VLAN, in accordance with the detected content distribution conditions. The OLT detects that the number of viewers of a predetermined channel exceeds a predetermined threshold value or is less than the predetermined threshold value, as the content distribution conditions. Further, the OLT performs switching to distribution using a broadcasting VLAN in a case where it is detected that the number of viewers of the predetermined channel exceeds the predetermined threshold value, and performs switching to distribution using an individual VLAN in a case where it is detected that the number of viewers of the predetermined channel is less than the predetermined threshold value.

Abstract: An MDF (10) receives MLDv2 received by vCPE (20) that is connected to CPE (50) via a tunnel. When the MLDv2 is received, the MDF (10) determines an edge router (30) that accommodates the CPE (50) being a transmission source of the MLDv2. Then, the MDF (10) instructs the determined edge router (30) to perform copy distribution of contents to the CPE (50) being the transmission source of the MLDv2.

Abstract: When a subscriber terminal (100A) connects to the other party vCPE (310B), a communication system (1) determines whether a connection between the other party terminal (100B) and the other party vCPE (310B) and a connection between the subscriber terminal (100A) and the other party vCPE (310B) are to be established through the same network segment based on connection permission conditions of the other party vCPE (310B) and the subscriber terminal (100A), and the other party vCPE (310B) allocates a network segment, which is the same as or different from a network segment allocated to the other party terminal (100B), to the subscriber terminal (100A) according to the determination.

Abstract: In a communication system including first virtual CPE and second virtual CPE, the first virtual CPE includes a band acquisition unit configured to acquire a first contract band set for a subscriber under control of the first CPE and acquire a value of decrease in the first contract band when at least one subscriber terminal of the subscriber transitions from being under control of the first CPE to being under control of the second CPE, and a band control unit configured to control a communication band for the first CPE, and the second virtual CPE includes a band acquisition unit configured to acquire a second contract band set for a subscriber under control of the second CPE and acquire a value of increase in the second contract band, and a band control unit configured to control a communication band for the second CPE.

Abstract: An application information storage unit configured to store information obtained by associating application information including flow characteristics of an application of a flow constituted by a packet with a flow identifier for identifying the flow of the packet, an acquisition unit configured to acquire, in a case where an input port receives a packet, application information of a flow constituted by the packet from the application information storage unit, and an output unit configured to output the packet received by the input port to a packet transfer apparatus in a load state indicating that a load due to the flow of the flow characteristics is light among a plurality of packet transfer apparatuses according to the flow characteristics included in the application information acquired by the acquisition unit are provided.

Abstract: An IoT device accommodation GW (20) includes an alive monitoring time management unit (21) and a communication unit (23). The alive monitoring time management unit (21) sets a monitoring cycle for an IoT device. The communication unit (23) transmits the monitoring cycle set by the alive monitoring time management unit (21) to the IoT device.

Abstract: An IoT device accommodation GW includes an alive monitoring time management unit, an alive monitoring reception amount management unit, and a communication unit. The alive monitoring time management unit sets, for each IoT device, a transmission time of an alive monitoring message to the gateway. The alive monitoring reception amount management unit acquires a planned reception number of alive monitoring messages by the IoT devices per unit time based on a setting content by the alive monitoring time management unit. The alive monitoring time management unit changes the transmission time of the alive monitoring message of any IoT device in a case where the acquired planned reception number exceeds an allowable reception number of alive monitoring messages. The communication unit transmits the transmission time set by or the transmission time changed by the alive monitoring time management unit to the IoT device.

Abstract: When the load becomes high, an identification unit (301) of a second packet forwarding device (30) identifies an application of a new flow. Then, a determination unit (302) determines whether or not distribution of new flow is necessary, based on the flow characteristic of the application and the type of the high load. Then, when distribution of the new flow is necessary, a decision unit (303) acquires a list of second packet forwarding devices (30) having a low load from the load monitoring device (10), and decides a second packet forwarding device (30) as the distribution destination. Then, a control unit (304) performs a route control for guiding the flow to the second packet forwarding device (30) which is the distribution destination.