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1. (WO2013118873) CONTROL DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD AND PROGRAM

Pub. No.:    WO/2013/118873    International Application No.:    PCT/JP2013/053079
Publication Date: Fri Aug 16 01:59:59 CEST 2013 International Filing Date: Sat Feb 09 00:59:59 CET 2013
IPC: H04L 12/707
H04L 12/70
Applicants: NEC CORPORATION
日本電気株式会社
KUSUMOTO, Nobuhiro
楠本 喜弘
Inventors: KUSUMOTO, Nobuhiro
楠本 喜弘
Title: CONTROL DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD AND PROGRAM
Abstract:
The purpose of the present invention is to transfer broadcast packets and multicast packets in an environment in which a link aggregation group is configured in a centrally controlled network. The control device is provided with: a topology management unit which manages a network topology configured to include multiple relay devices; a link aggregation group management unit which groups the ports of multiple relay devices having physical links to an arbitrary node of the network topology, and manages the group as a port of a virtual logical link to the arbitrary node; and a relay device control unit which controls the relay devices having the grouped ports so that when a broadcast packet or multicast packet is received multiple instances of the same packet are not transferred on the physical links forming the virtual logical link.