Nippon Telegraph and Telephone Corporation

Yuta Watanabe

Yuki Takei

Masayuki Nishiki

Takayuki Fujiwara

Hiroki Iwahashi

Satoshi Nakatsukasa

Masato Nishiguchi

A traffic transfer system includes a switch () and a switch () and distributes and transfers traffic of communication on a network to a plurality of devices. The switch () determines a device of a transfer destination of input traffic among a plurality of devices by a hash function. The switch () transfers traffic to a first device when the first device determined to be a transfer destination is available and transfers traffic to the switch () when the first device is not available. The switch () determines a device to which the traffic transferred by the switch () is transferred, from available devices by a hash function. The switch () transfers the traffic to a second device determined to be a transfer destination.

Traffic transferring device, switch, traffic transferring method, and traffic transferring program

A communication system sets a first priority as a priority of a BGP in a path connecting from a terminal to a terminal through an active system connection unit, sets a second priority lower than the first priority as a priority of a BGP in a path connecting from the terminal to the terminal through the standby system connection unit, and sets a third priority which is lower than the first priority and higher than the second priority as a priority of a BGP in a path connecting the active system connection unit and the standby system connection unit. The communication system discards traffic other than a BGP among traffic from the standby system connection unit to the active system connection unit.

Communication control device, communication control method, communication control program, and communication control system

In a network management device, a storage unit stores priority of each of a plurality of users using a network system and a plurality of spare configurations used when a failure occurs in an active edge router, and, when a failure occurs in the active edge router, a setting unit sets each of the plurality of spare configurations to any of a plurality of edge routers included in the network system, in order from a user having higher priority, on the basis of the priority of the user.

Network system management apparatus and method

When a controller receives a tunnel setting order from a high-order Ops (operation system), the controller divides the setting order into a first setting processing step related to setting registration of a user, a second setting processing step related to a transfer surface of the tunnel, a third setting processing step related to an interface of each transfer apparatus used for a tunnel of the transfer surface, and a fourth setting processing step related to a parameter to be set to the interface and stores the setting processing steps in a setting management DB. Subsequently, the controller creates a configuration for executing each setting processing step indicated in the tunnel setting order by reflecting information indicated in each divided setting processing step to a template of each setting processing step. In addition, the controller inputs the created configuration to a transfer apparatus at a setting destination of the tunnel.

Configuration feeding device, configuration feeding method, and configuration feeding program

A collection unit () collects information about at least either of user accommodation status and resource consumption status from plural communications devices accommodating users who receive communications services. An estimation unit () estimates an amount of resource consumption of a first user for whom an accommodation device is to be determined. A judgment unit () judges whether each of the communications devices satisfies a predetermined restricting condition, based on the information collected by the collection unit () and the amount of resource consumption of the first user estimated by the estimation unit (). A determination unit () determines a communications device judged by the judgment unit () to satisfy the restricting condition among the communications devices, as the accommodation device for the first user.

Growing community of inventors

Musashino, Japan

Yuta Watanabe