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:
Nov. 12, 2013
Filed:
Dec. 28, 2004
Masaki Hirota, Kawasaki, JP;
Kazuto Nishimura, Kawasaki, JP;
Yasushi Sasakawa, Kawasaki, JP;
Kou Takatori, Kawasaki, JP;
Masaki Hirota, Kawasaki, JP;
Kazuto Nishimura, Kawasaki, JP;
Yasushi Sasakawa, Kawasaki, JP;
Kou Takatori, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A method for preventing a control packet loop in a network realizing node redundancy or circuit redundancy based on a rapid spanning tree protocol or a multiple spanning tree protocol is disclosed. The method includes the steps of: detecting a loop of a control packet of the rapid spanning tree protocol or the multiple spanning tree protocol; and discarding the control packet by which the loop is detected so as to prevent occurrence of the loop of the control packet.