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:
Oct. 26, 2010
Filed:
Aug. 08, 2006
Tetsuya Nishi, Kawasaki, JP;
Tomonori Gotoh, Kawasaki, JP;
Tetsuya Nishi, Kawasaki, JP;
Tomonori Gotoh, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A loop locating apparatus and method enabling simple and fast identification of a Layerloop fault occurring in a network, wherein, when the possibility of a Layerloop is detected, a loop locating command function unit makes a packet transmission/reception function unit send a series of inspection packets (Pis) with successively incremented TTLs and monitors the return packets (te) of the inspection packets (Pis) by a return number counting function unit and wherein a loop location decision function unit finds the routers returning packets (te) with remarkably larger return numbers than the others and identifies the routers with return numbers over a predetermined threshold as the location of occurrence of the loop.