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:
Dec. 20, 2016
Filed:
Apr. 10, 2015
Hitachi Metals, Ltd., Minato-ku, Tokyo, JP;
Makoto Yasuda, Tsuchiura, JP;
Shigeru Tsubota, Tsuchira, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A first fault monitoring unit monitors presence/absence of fault on a communication path between bridge ports, and a second fault monitoring unit monitors presence/absence of fault on a communication path via a ring network between upper link ports. A third fault monitoring unit monitors presence/absence of fault at a MCLAG port. When a monitoring result by the third fault monitoring unit changes from absence of fault to presence of fault, a MCLAG control unit transmits a fault notification frame. At this time, when a monitoring result by the first fault monitoring unit is absence of fault, the MCLAG control unit transmits the fault notification frame from the bridge port, and when the monitoring result by the first fault monitoring unit is presence of fault and a monitoring result by the second fault monitoring unit is absence of fault, it transmits the fault notification frame from the upper link port.