Abstract: Provided is a server load prediction system that predicts a server load on a server connected to an apparatus installed in a production process including an apparatus requirement specification storage unit that stores a requirement specification of each apparatus for a server, a server specification storage unit that stores a server specification indicating a capability held by each server, an input information creation unit that receives an input of a calculation condition and creates an input parameter required to execute a simulation for calculating the server load, a server load calculation unit that calculates the server load caused by the apparatus used in a process designated under the calculation condition by executing the simulation, and an output unit that outputs the calculation result.

Abstract: An object of the present invention is to improve the work efficiency of a moving cooperative work of a first device and a second device. When controlling a cooperative work in a first device and a second device that perform the cooperative work in cooperation with each other, the working status of a first work of the first device is collected, and a second work of the second device is controlled on the basis of the working status.

Abstract: Provided is a data processing system which links a plurality of types of processing each of which configured to implement a function. The data processing system includes: a gateway for inputting data; and a server for inputting data output from the gateway. The gateway applies first processing including one or more types of processing to the input data in accordance with information included in first flow information and outputs the processed data to the server.

Abstract: Provided is a server load prediction system that predicts a server load on a server connected to an apparatus installed in a production process including an apparatus requirement specification storage unit that stores a requirement specification of each apparatus for a server, a server specification storage unit that stores a server specification indicating a capability held by each server, an input information creation unit that receives an input of a calculation condition and creates an input parameter required to execute a simulation for calculating the server load, a server load calculation unit that calculates the server load caused by the apparatus used in a process designated under the calculation condition by executing the simulation, and an output unit that outputs the calculation result.

Abstract: Provided is a data processing system which links a plurality of types of processing each of which configured to implement a function. The data processing system includes: a gateway for inputting data; and a server for inputting data output from the gateway. The gateway applies first processing including one or more types of processing to the input data in accordance with information included in first flow information and outputs the processed data to the server.

Abstract: Disclosed is a communication network management method provided with a plurality of communication devices and a management system to transmit packets between a plurality of communication devices through a communication path established by the management system. The management system establishes a communication path for a first service necessitating a guarantee of an availability factor on the basis of a first establishment policy in which communication paths that share the same route even in a part of the communication network are consolidated. The management system establishes a communication path for a second service that does not necessitate a guarantee of an availability factor on the basis of a second establishment policy in which the routes to be used are distributed over the entire communication network. The establishment policy is changed depending on a service type.

Abstract: It is ensured to prevent a user from misrepresenting a time stamp, and to send out packets in sequence in which the packets are accepted to all users who are geographically isolated from each other. A unique time stamp impartation function is realized by respective communication devices on a net inside an administrative responsibility range of a communication common carrier, hardly accessible by a user. If a packet with a time stamp imparted by a subscriber terminal, provided thereto, is received, the respective communication devices positioned on the net inside the administrative responsibility range nullify the relevant time stamp in order to prevent misrepresentation of the time stamp, by a user outside the administrative responsibility range, and restores the packet from the subscriber together with the time stamp when transferring the packet to the outside of the administrative responsibility range.

Abstract: A translator is connected to a first network for transferring data in a first protocol, to a second network for transferring data in a second protocol, and to a translation server to which other translators are connected, for retaining translation information for a protocol translation between the first protocol and the second protocol. The translator generates a second address in the first protocol corresponding to a first address in the second protocol provided to a terminal accommodated in the second network. It retains a correspondence between the first address and the second address as the translation information and registers the correspondence at the translation server.

Abstract: A packet transport system to which the present invention is applied includes an edge node accommodating an access network at an edge, and a core node of carrying out a processing of assorting a frame gathered from a plurality of the edge nodes, the edge node provides a label to the frame flowing in from the access network, and the packet transport system transmits the frame in reference to the label. The edge node includes a priority information providing portion of changing a piece of priority information provided to the frame flowing in from the access network in accordance with a congested state of the core node, and a priority previously set to a path specified by the label.

Abstract: It is ensured to prevent a user from misrepresenting a time stamp, and to send out packets in sequence in which the packets are accepted to all users who are geographically isolated from each other. A unique time stamp impartation function is realized by respective communication devices on a net inside an administrative responsibility range of a communication common carrier, hardly accessible by a user. If a packet with a time stamp imparted by a subscriber terminal, provided thereto, is received, the respective communication devices positioned on the net inside the administrative responsibility range nullify the relevant time stamp in order to prevent misrepresentation of the time stamp, by a user outside the administrative responsibility range, and restores the packet from the subscriber together with the time stamp when transferring the packet to the outside of the administrative responsibility range.

Abstract: A translator is connected to a first network for transferring data in a first protocol, to a second network for transferring data in a second protocol, and to a translation server to which other translators are connected, for retaining translation information for a protocol translation between the first protocol and the second protocol. The translator generates a second address in the first protocol corresponding to a first address in the second protocol provided to a terminal accommodated in the second network. It retains a correspondence between the first address and the second address as the translation information and registers the correspondence at the translation server.

Abstract: Edge nodes form point-to-point communication paths with one another. Multiple communication paths set at one port of an edge node and/or a relay node are regarded as a group. Identification information of the port and identification information of a group that outputs a frame inputted into the port are previously stored as associated with each other. If the destination address of a frame inputted into the port is unknown, an outgoing interface search unit identifies at least one group corresponding to the port. The frame is outputted from a port corresponding to the identified group.

Abstract: A translator is connected to a first network for transferring data in a first protocol, to a second network for transferring data in a second protocol, and to a translation server to which other translators are connected, for retaining translation information for a protocol translation between the first protocol and the second protocol. The translator generates a second address in the first protocol corresponding to a first address in the second protocol provided to a terminal accommodated in the second network. It retains a correspondence between the first address and the second address as the translation information and registers the correspondence at the translation server.

Abstract: A packet transport system to which the present invention is applied includes an edge node accommodating an access network at an edge, and a core node of carrying out a processing of assorting a frame gathered from a plurality of the edge nodes, the edge node provides a label to the frame flowing in from the access network, and the packet transport system transmits the frame in reference to the label. The edge node includes a priority information providing portion of changing a piece of priority information provided to the frame flowing in from the access network in accordance with a congested state of the core node, and a priority previously set to a path specified by the label.

Abstract: A translator is connected to a first network for transferring data in a first protocol, to a second network for transferring data in a second protocol, and to a translation server to which other translators are connected, for retaining translation information for a protocol translation between the first protocol and the second protocol. The translator generates a second address in the first protocol corresponding to a first address in the second protocol provided to a terminal accommodated in the second network. It retains a correspondence between the first address and the second address as the translation information and registers the correspondence at the translation server.

Abstract: The invention addresses reducing time taken to obtain destination MAC addresses or alleviating the workload of manually setting MAC addresses in physical ports for duplicate PtP connections in WAN. A physical port is provided with functionality that, when transmitting a data frame received by the transmission block in the physical port, copies the content of the source MAC address field in the received data frame to the destination MAC address field, selects a destination MAC address randomly, or specifies a fixed value which has been set beforehand as the destination MAC address. The port is also provided with functionality that performs receive processing on a data frame after being received by the reception block without inspecting the destination MAC address field in the MAC header. Thereby, the time to obtain addresses is reduced or the setting workload is lessened.

Abstract: A translator is connected to a first network for transferring data in a first protocol, to a second network for transferring data in a second protocol, and to a translation server to which other translators are connected, for retaining translation information for a protocol translation between the first protocol and the second protocol. The translator generates a second address in the first protocol corresponding to a first address in the second protocol provided to a terminal accommodated in the second network. It retains a correspondence between the first address and the second address as the translation information and registers the correspondence at the translation server.

Abstract: A duplicate system includes an active side (0 side) and a standby side (1 side). An OLT includes an autodiscovery function which, when the OLT is active, determines the next starting time of autodiscovery procedure of the standby side and notifies the standby side of the above starting time, a table of management information that holds the line information of a partner with which the OLT forms the duplicate system and the next starting time of autodiscovery procedure of the OLT, and a function of switching active side that calculates a timing of switching active side. A function of receiving data from ONT in the OLT includes a function of detecting data sequence number and a function of detecting queue length. Moreover, a function of sending data of ONT includes a function of assigning sequence number and a function of discarding data.

Abstract: A data distribution system is provided which, in a network where data is exchanged between users, prevents the users from downloading malicious data without knowing whether the data he or she is going to download is the desired data. In a system configuration, a network administrator makes publicly known to the users, distributor identifiers uniquely assigned to data distributors in advance, and prohibits a data distribution by a user with a distributor identifier when the administration is notified that a malicious data has been distributed from the user, thereby securing reliability of the data distributors. A signature of the data is used to detect tampered data and prevent such data from being redistributed. Further, a user who tampered with the data is identified and then prevented from using the network.

Abstract: A roaming service covering a plurality of telecommunications carriers in mobile data communication is provided. In a communication system including a wireless terminal, two or more terminal-side networks communicating with the wireless terminal, and a backbone-side network connected to the terminal-side networks and connecting the wireless terminal with a backbone network, the wireless terminal traveling between the terminal-side networks during communication, wherein each of the terminal-side networks has a relay device for relaying communication between the wireless terminal and the backbone-side network and wherein the backbone-side network has a position management device for managing positional information of the wireless terminal and an authentication device for authenticating the wireless terminal according to contract information of the wireless terminal.