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.

Date of Patent:
Mar. 21, 2017

Filed:

Jan. 08, 2015
Applicant:

Alaxala Networks Corporation, Kawasaki-shi, Kanagawa, JP;

Inventors:

Shigeo Mochida, Kawasaki, JP;

Yoshihisa Tanaka, Kawasaki, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/28 (2006.01); H04L 12/437 (2006.01); H04L 12/427 (2006.01); H04L 12/24 (2006.01); H04L 12/933 (2013.01); H04L 12/939 (2013.01); H04L 12/703 (2013.01);
U.S. Cl.
CPC ...
H04L 12/437 (2013.01); H04L 12/427 (2013.01); H04L 41/0668 (2013.01); H04L 49/102 (2013.01); H04L 49/557 (2013.01); H04L 45/28 (2013.01);
Abstract

To improve fault tolerance of a ring network, provided is a data transfer device system belonging to a ring network system. The data transfer device system includes a plurality of data transfer devices; the plurality of data transfer devices including a first data transfer device and a second data transfer device connected with the first data transfer device; the first data transfer device having a first ring port; and the second data transfer device having a second ring port. The first data transfer device controls whether to permit the first ring port and the second ring port to transfer data based on a state of the network system, an attribute of the first data transfer device in the data transfer device system, and an attribute of the data transfer device system in the network system.


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