Abstract: An information processing apparatus includes: processors to which a plurality of tasks are respectively allocated; a task execution history recording unit that records the task execution time of each of the plurality of tasks as a history; a score calculation unit that calculates a score indicating the degree of resource contention of the processor based on the task execution time; and a processor allocation unit that changes the allocation of the task based on the score.

Abstract: A network system comprises a communication facility, and a management apparatus. The communication facility includes a wireless base station, a data processing apparatus, and communication processing apparatuses. The management apparatus manages resource management information for managing, as a resource, a value of an item to be set for the communication facility to generate a network slice for each of characteristics of the network slice. The management apparatus generates the network slice, refers, based on a characteristic of the network slice, to the resource management information to determine the value of the item and transmits, to the communication facility, first setting information for setting the determined value of the item.

Abstract: From among a U-plane and a C-plane, the U-plane is installed in a first user site which has a base station, and the C-plane is installed in a C-plane site (any site that is not a user site). A system sets a U-plane inter-site path which is an inter-site communication path that connects a first user site with a second user site via a wide area network, and a C-plane inter-site path which is an inter-site communication path that connects a C-plane site with the first user site via the wide area network. In addition, the system sets an in-site communication path which is a communication path within the first user site and which connects to an inter-site communication path. A U-plane inter-site path is an inter-site communication path via which data is transmitted or received by a U-plane. A C-plane inter-site path is an inter-site communication path via which a signal is transmitted or received by a C-plane.

Abstract: An information setting system includes a representative setting device and a remote setting device in a wireless communication facility. The remote setting device manages remote management information including information indicating a correspondence relationship among a device identifier, a device name, and a setting object. The representative setting device acquires a device identifier, allocates a network identifier to the device, stores the acquired device identifier and the allocated network identifier, and transmits the device identifier to the remote setting device. The remote setting device specifies a device name and a setting object from the remote management information based on the device identifier, and transmits the device name and the setting object to the representative setting device.

Abstract: A network is optimized quickly and flexibly according to a request from a user who conducts data communication, or a trend of the traffic. Plural packet transport devices have plural paths between the respective devices, and packets transmitted from plural packet transfer devices can be transferred on the path. A management control device calculates a path most suitable for transmitting the packet, identifies an identifier necessary for transferring the packet on the path, and sets the packet transfer devices so as to allocate the identifier to the packet from the user, and transport the packet to the packet transport devices.

Abstract: Provided is a network management system for managing a plurality of packet relay devices, the network management system comprising: the plurality of packet relay devices constituting networks; and a display device for displaying configurations of the networks, in a case where it is determined that a virtual packet relay device identifier of the virtual packet relay device that is assigned a second-network identifier associated with the extracted second-network identifier is registered in a first-network configuration table, a first-work identifying module is configured to associate a first-network identifier that is associated with the virtual packet relay device identifier with the obtained configuration information, and register the association between the first-network identifier and the obtained configuration information in the first-network configuration table.

Abstract: A network management system comprising: a network including a plurality of packet relay apparatuses; wherein the plurality of packet relay apparatuses include first packet relay apparatuses, second packet relay apparatuses, and third packet relay apparatuses located downstream of the first packet relay apparatuses and the second packet relay apparatuses, wherein each of the third packet relay apparatuses has a first path coupled to one of the first packet relay apparatuses to send and receive traffic and a second path coupled to one of the second packet relay apparatuses and being in a blocking state, a management computer includes: a state information collection unit for acquiring state information on the first to the third packet relay apparatuses; and a power management unit for selecting a candidate packet relay apparatus to be deactivated satisfying predetermined conditions based on the state information.

Abstract: A network management/apparatus connected to a plurality of packet relay apparatuses constituting a group through a network includes an energy saving level calculation unit for calculating an energy saving level of each of the packet relay apparatuses on the basis of a CPU usage ratio of the packet relay apparatus managed or a difference between the present energy saving level and the energy saving level of minimum guarantee of the packet relay apparatus, and an energy saving function setting unit for setting an energy saving function of the packet relay apparatuses on the basis of the energy saving level calculated by the energy saving level calculation unit.

Abstract: There are provided a virtual network management system and a network device that can identify the topology of a virtual network, estimate a virtual network to which various computing devices belong and the locations of the computing devices, and present the virtual network and the locations to a network administrator. In a network management device, the configurations of packet transmission devices and a MAC learning table are managed. A virtual network to which given virtual computing units are connected is identified from information about a virtual packet transmission device identifier, a VLAN identifier, a MAC address, and a packet transmission port number acquired from the MAC learning table. The locations of the virtual computing units in the virtual network are estimated, and the topology is drawn on the screen of a display.

Abstract: Provided is a network management system for managing a plurality of packet relay devices, the network management system comprising: the plurality of packet relay devices constituting networks; and a display device for displaying configurations of the networks, in a case where it is determined that a virtual packet relay device identifier of the virtual packet relay device that is assigned a second-network identifier associated with the extracted second-network identifier is registered in a first-network configuration table, a first-work identifying module is configured to associate a first-network identifier that is associated with the virtual packet relay device identifier with the obtained configuration information, and register the association between the first-network identifier and the obtained configuration information in the first-network configuration table.

Abstract: To analyze traffic at an application level, a stream according to TCP or SCTP is required to be reconstructed and to be analyzed. When a packet is transferred to analyzing equipment using a port mirroring function with which a router and a switch are provided, transferred traffic volume increases and exceeds the throughput of the analyzing equipment. As only a part of packets configuring a stream is transferred to the analyzing equipment in transfer to the analyzing equipment using a packet sampling function, analysis at the application level is impossible. To solve the problem, when a packet communication unit recognizes a stream start packet, samples a stream initiated by the packet on a condition and at a rate respectively determined beforehand and generates a condition for copying the packet based upon information of both ends of the stream included in the packet, packets sampled in units of stream can be transferred to the analyzing equipment.

Abstract: In a packet transmission router used in a VRRP (Virtual Router Redundancy Protocol) network having a VR (Virtual Router) function, when virtual routers VR are realized by the VRRP, the routing control information that each VR manages is prevented from being mixed with that of other VR. When an active packet transmission router transmits a VRRP packet to a standby packet transmission router, an identifier indicating which virtual router belongs to the VRRP packet is added to the VRRP packet before the transmission of the VRRP packet.

Abstract: A packet transmission method is provided when there occurs a double fault in working paths of a 1:N configuration and when packets thereon are to be bypassed from the working paths to a recovery path, the packet can be transferred to the recovery path while retaining packet priority classes or VPNs on the recovery path. If faults occur in both a first line on which is set a first label-switched path and a second line on which is set a second label-switched path, packets which should flow respectively through the first and second label-switched paths are bypassed to the recovery path. At this time, different labels are affixed to the packets such that the thus-labeled packets are transferred to the recovery path.

Abstract: To analyze traffic at an application level, a stream according to TCP or SCTP is required to be reconstructed and to be analyzed. When a packet is transferred to analyzing equipment using a port mirroring function with which a router and a switch are provided, transferred traffic volume increases and exceeds the throughput of the analyzing equipment. As only a part of packets configuring a stream is transferred to the analyzing equipment in transfer to the analyzing equipment using a packet sampling function, analysis at the application level is impossible. To solve the problem, when a packet communication unit recognizes a stream start packet, samples a stream initiated by the packet on a condition and at a rate respectively determined beforehand and generates a condition for copying the packet based upon information of both ends of the stream included in the packet, packets sampled in units of stream can be transferred to the analyzing equipment.

Abstract: Traffic flowing through packet transmission equipment comes in countless variations ranging from traffic from harmless general users, to PC virus-infected users, and users with harmful intent. Transferring all of this traffic together through a module for monitoring causes a great loss in throughput and is an extremely inefficient way to handle general user traffic. After checking the module processing results, the system administrator can resolve this situation by changing each user's transfer module but making this setting manually is unwieldy and lacks flexibility. A security level can be set on table in the platform module linking each user to the destination application module. By dynamically changing this security level according to processing results in each module, each user's destination application module can be changed smoothly and flexibly.

Abstract: In a packet transmission router used in a VRRP (Virtual Router Redundancy Protocol) network having a VR (Virtual Router) function, when virtual routers VR are realized by the VRRP, the routing control information that each VR manages is prevented from being mixed with that of other VR. When an active packet transmission router transmits a VRRP packet to a standby packet transmission router, an identifier indicating which virtual router belongs to the VRRP packet is added to the VRRP packet before the transmission of the VRRP packet.

Abstract: A packet transmission method is provided when there occurs a double fault in working paths of a 1:N configuration and when packets thereon are to be bypassed from the working paths to a recovery path, the packet can be transferred to the recovery path while retaining packet priority classes or VPNs on the recovery path. If faults occur in both a first line on which is set a first label-switched path and a second line on which is set a second label-switched path, packets which should flow respectively through the first and second label-switched paths are bypassed to the recovery path. At this time, different labels are affixed to the packets such that the thus-labeled packets are transferred to the recovery path.

Abstract: A position sensorless motor control apparatus is provided that achieves high resolution and high accuracy angle estimation, achieves angle estimation even in the presence of phase voltage saturation, and achieves high accuracy angle estimation even when a back electromotive force constant changes. An angle estimating unit which generates estimated rotor angle comprises: an estimation phase selecting unit for selecting an estimation phase designating the stator winding phase to be used for the generation of the estimated angle; a deviation generating unit for generating, based on the estimated angle and phase voltage value, a deviation relative to a model expressed by a phase voltage equation of the estimation phase; an angle correcting unit for correcting the estimated angle so that the deviation converges to zero; and an estimated coefficient value correcting unit for correcting an estimated coefficient value which is the estimated value of a coefficient in the phase voltage equation.