Hitachi, Ltd.

Hayato Hoshihara

Yusuke Yajima

Masayuki Takase

Taisuke Ueta

Akihiko Tsuchiya

Toshiaki Suzuki

Taro Ogawa

A network management device retains path information of paths as a list of node identifying information to identify nodes, the path information including information on paths sharing a link regarding a relation in which one path shares a link with another path. According to the information on paths sharing a link, the network management device determines a path setup timing for a path to be the same for a group of one or more paths that do not share a same link with the path and determines a different path setup timing for a group of one or more paths that share a same link with the path than the timing for the group including the path, and executes path setup via communication devices existing on paths constituting each group of paths as per path setup timing determined for each group.

Network system, network management method, and network management device

In an exemplary communication apparatus, an assignment module determines whether processing for a second packet assigned the flow ID associated with a received first packet is being executed. The assignment module determines a parallel processing module to execute processing for the first packet and a parameter to be included in a notice of assignment. The determined parallel processing module acquires a result of execution of the processing for the second packet from the computation table or the result of execution of the processing held in the parallel processing module according to the received notice of assignment. The determined parallel processing module executes the processing for the first packet using the result of execution of the processing for the second packet and the information included in the notice of assignment, and updates a computation table with a result of execution of the processing for the first packet.

Communication apparatus and communication method

A communication device includes a flow identification unit specifying a user corresponding to received data, a bandwidth control unit controlling transmission of the received data so as not to exceed a bandwidth corresponding to the selected communication path in two bandwidths allocated to the specified user, and a label addition unit adding the label value corresponding to the selected communication path to the data received from the bandwidth control unit and transmitting the data. The label addition unit executes, upon detecting a trigger for a change in the selection of the communication path, changing the selection of the label value and transmitting a feedback signal for giving notice of the change in the selection of the communication path to the bandwidth control unit in a given order. The bandwidth control unit executes a process of changing the setup of the bandwidth on the basis of the received feedback signal.

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Yokohama, Japan

Hayato Hoshihara