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, 2019
Filed:
Aug. 13, 2015
Applicant:
Allied Telesis Holdings K.k., Shinagawa-ku, Tokyo, JP;
Inventor:
Tokunori Ikegami, Tokyo, JP;
Assignee:
ALLIED TELESIS HOLDINGS K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/935 (2013.01); H04L 12/937 (2013.01);
U.S. Cl.
CPC ...
H04L 49/30 (2013.01); H04L 49/254 (2013.01);
Abstract
According to the present invention, a network device having a plurality of ports, includes a linkup detection unit, a loop detection unit, and a communication shutoff unit. The linkup detection unit detects a linkup of the each port. The loop detection unit detects a loop formed by the network device. The communication shutoff unit shuts off communication on a port on which the linkup was detected at a later time point if the loop is detected.