Nec Corporation

Shunji Motomura

Takahiro Nakano

Yasushi Takeda

Masashi Numata

Takahiro Otake

Masakatsu Yanagisawa

Mamio Hokazono

A control apparatus comprises a path generation unit configured to logically generate a plurality of forwarding paths for forwarding a broadcast packet between a plurality of domains that each includes a plurality of communication nodes; a path determination unit configured to determine different communication nodes among the plurality of communication nodes included in each domain as representative nodes that forward the broadcast packet in each of the plurality of forwarding paths; and a path setting unit configured to set control information including information regarding the representative nodes in the communication nodes on the plurality of forwarding paths.

Control apparatus, communication system, control method and program

A control apparatus sets, in a node located at the start point of an aggregatable segment of two or more packet forwarding paths including the aggregatable segment, a packet handling operation for each flow, the packet handling operation being for writing a flow identifier for identifying the flow and a path identifier used for packet forwarding through the aggregatable segment in a region of each of packets to be matched against the matching rule and then causing the packet to be output. The packets respectively belong to the individual flows, and each of the packets is to be forwarded through a corresponding one of the two or more packet forwarding paths. Further, the control apparatus sets, in a node located intermediate on the aggregatable segment, a common packet handling operation for causing the packet that matches the path identifier to be forwarded according to the packet forwarding path. Then, the control apparatus sets, in a node located at the end point of the aggregatable segment, a packet handling operation for performing restoration and forwarding based on the flow identifier.

Communication system, control apparatus, packet handling operation setting method, and program

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Tokyo, Japan

Shunji Motomura