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:
Sep. 17, 2013
Filed:
Nov. 12, 2010
Takanori Sasaki, Kawasaki, JP;
Takanori Sasaki, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
Disclosed is a path-continuity check method for checking continuity of a path. The method includes transmitting a check frame by a node device on an upstream side and receiving the check frame by a node device on a downstream side; registering, by the node device on the upstream side, path information of the check frame and a transmission port in a transmission learning table together with a downstream learning number as a table number of a reception learning table of the node device on the downstream side in which the path information is registered; and setting, by the node device on the upstream side, plural of the downstream learning numbers registered in the transmission learning table in one aggregation check frame as table number ON information items and transmitting, by the node device on the upstream side, the one aggregation check frame to the node device on the downstream side.