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:
May. 16, 2017
Filed:
Oct. 09, 2014
Applicant:
Hitachi Metals, Ltd., Minato-ku, Tokyo, JP;
Inventor:
Kazutoshi Kariya, Tsuchiura, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/26 (2006.01); H04L 12/931 (2013.01); H04L 12/935 (2013.01);
U.S. Cl.
CPC ...
H04L 49/351 (2013.01); H04L 43/0811 (2013.01); H04L 43/50 (2013.01); H04L 49/30 (2013.01);
Abstract
One external ports of the line cards are set as member ports of the same LAG. When monitoring a continuity between the member ports of the LAG and an outside of the device, a management card generates a first monitoring frame and transmits it to any line card corresponding to the LAG. The line card transmits the first monitoring frame to the outside of the device from the external port. When the line cards corresponding to the LAG receive a second monitoring frame from the outside of the device by the LAG, the line cards transmit the second monitoring frames to the management card.