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.

Date of Patent:
May. 05, 2009

Filed:

Feb. 18, 2005
Applicants:

Junichi Sawada, Kawasaki, JP;

Hidetoshi Amari, Kawasaki, JP;

Shinji Takao, Yokohama, JP;

Koji Matsunaga, Yokohama, JP;

Tatsuya Toyozumi, Yokohama, JP;

Inventors:

Junichi Sawada, Kawasaki, JP;

Hidetoshi Amari, Kawasaki, JP;

Shinji Takao, Yokohama, JP;

Koji Matsunaga, Yokohama, JP;

Tatsuya Toyozumi, Yokohama, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/28 (2006.01);
U.S. Cl.
CPC ...
Abstract

A transmission device capable of configuring a communication network over which MC packets are forwarded in a way that does not use bands with futility is disclosed. The transmission device is so configured to transmit, when receiving a multicast packet from a host, to the other transmission device the multicast packet that is to be discarded by the transmission device having no necessity of forwarding the received multicast packet to the next transmission device.


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