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:
Jun. 09, 2009
Filed:
Feb. 25, 2005
Toshinori Koyanagi, Kawasaki, JP;
Hideo Sunaga, Yokohama, JP;
Satoshi Nemoto, Yokohama, JP;
Shigetoshi Nakai, Yokohama, JP;
Toshinori Koyanagi, Kawasaki, JP;
Hideo Sunaga, Yokohama, JP;
Satoshi Nemoto, Yokohama, JP;
Shigetoshi Nakai, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A packet transmission device that is connected to a plurality of communication lines, and transmits a packet received, includes a failure detecting unit that monitors a condition of the communication lines, and detects a failure in the communication lines; and a packet transmitting unit that transmits, when the failure detecting unit detects a failure in a communication line, and when a packet having a same transmission-destination address as an address corresponding to a port of the communication line in which the failure has been detected is received, the packet from all preset ports.