The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 2010
Filed:
Jan. 26, 2006
Masahiro Sakauchi, Tokyo, JP;
Daisaku Ogasahara, Tokyo, JP;
Kazuo Takagi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A packet ring network system is disclosed which enables plurality of packet rings to perform packet transfer via a plurality of links while preventing multiple reception of packets and broadcast stream in a normal state where no failure has occurred. The packet ring network system includes a first packet ring and a second packet ring, each packet ring having a plurality of inter-ring connecting nodes, and each of the plurality of inter-ring connecting nodes in the first packet ring is connected with each of the plurality of inter-ring connecting nodes in the second packet ring in a one to one relationship so that the packet rings are connected with each other. When one of the inter-ring connecting nodes receives a packet to be broadcasted via a link connecting the first and second packet rings the node performs bidirectional flooding of the broadcast packet such that the packet arrives at a predetermined cleave point, and the node uses the source address of the other node so as to falsify the source.