Nec Corporation

Keisuke Torigoe

Youichi Hidaka

Masanori Takashima

Yoji Suzuki

Longjiang Wang

A server according to the present invention includes: a memory; and at least one processor coupled to the memory, the processor performing operations, the operations includes: storing topology information indicating a topology of a network composed of a plurality of switches; generating network route information indicating a communication route on the network based on the topology information; acquiring, from the switch, a transfer entry learned by the switch based on switch route information indicating a broadcast domain to that a port of the switch included in the network belongs; and mapping the transfer entry and the network route information to the topology information.

Server, communication method, and recording medium

A switch includes at least a first table and a second table different in mapping of egress information of a network and user information to a packet. The first table is searched for a first packet received and operation according to an action corresponding to a search key of the first table is applied to the first packet to convert the first packet to a second packet. The second packet is supplied to the second table. The second table is then searched for the second packet. When the search key of the second table is matched, the operation according to the action corresponding to the search key of the second table is applied to the second packet to convert the second packet to a third packet (refer to FIG.).

Network control method, network system, apparatus, and program

A server includes a plurality of network interfaces capable of communicating between the server and a plurality of communication apparatus which includes network ports capable of connecting a communication cable; a first unit specifying a pair of the network ports, which are connected via the communication cable, according to information related to connectivity of the network ports; and a second unit sending an instruction to the communication apparatus; wherein the instruction is to connect a first end of the communication cable to a first port corresponds to the specified port, and to connect a second end of the communication cable to a second port corresponds to the specified port.

Communication system, communication method, server equipment, and communication equipment

An open flow network system is stabilized while reducing a load, by reducing inquiries of a flow entry to a controller about a flow in which a flow registration has not completed. Specifically, the controller registers the flow entry that defines a rule and an action to uniformly control packets as a flow in a flow table of a switch. When receiving a packet, the switch carries out an inquiry of the flow entry corresponding to the received packet to the controller, if the flow entry corresponding to the received packet is not registered on the flow table, and stacks the received packet. Also, the switch controls the transfer of the received packet which has the same header data as the stacked packet by using the stacked packet until the flow entry corresponding to the received packet is registered.

Load reducing system and load reducing method

A communication equipment notifies a server equipment of a communication port to which a communication cable is connected. If another communication port as a connection partner of the notified communication port is not yet connected to the communication cable, the server equipment transmits a first notification instruction to another communication equipment having the said another communication port. The said another communication equipment indicates, in a viewable manner, a communication port corresponding to the first notification instruction as a communication port to which the communication cable is required to be connected.

Growing community of inventors

Tokyo, Japan

Keisuke Torigoe