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. 22, 2009
Filed:
Sep. 27, 2005
Akihiro Asa, Kawasaki, JP;
Kenichi Kawarai, Yokohama, JP;
Hideji Abe, Kawasaki, JP;
Osamu Tsurumi, Kawasaki, JP;
Hiroyuki Kaneko, Kawasaki, JP;
Akihiro Asa, Kawasaki, JP;
Kenichi Kawarai, Yokohama, JP;
Hideji Abe, Kawasaki, JP;
Osamu Tsurumi, Kawasaki, JP;
Hiroyuki Kaneko, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A repeater and method provides a technique to minimize congestion and packet loss, which may be generated when a fault is detected in a ring type packet network or when the network recovers from such a fault. A repeater having a plurality of ports for transmitting and receiving packets in a ring type network for transmitting the received packets on the basis of an address included in a received packet and a transmitting port database indicating an identifier of a port to transmit the packet having the address as the destination, comprises a control packet processing block to detect reception of a fault notifying packet transmitted from a repeater having detected a fault and a control block to update, upon reception of the fault notifying packet from an immediately adjacent repeater, a port identifier of the transmitting port database having a port identifier of the port having received said fault notifying packet into a port identifier of a port connected to another immediately adjacent repeater.