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. 13, 2014
Filed:
Jul. 03, 2012
Kensuke Ino, Kamakura, JP;
Hiroyuki Yoshino, Kawasaki, JP;
Shinji Nozaki, Kawasaki, JP;
Alaxala Networks Corporation, Kawasaki, JP;
Abstract
In a ring network including an old master node, a new master nodeis used as a replacement for the old master node. During replacement operation, when detecting that two ring ports of the new master nodeare set in link-up state, the new master nodegives a transit nodean instruction to forward a health check frame Hsent from a ring portof the old master nodeby a forwarding route going through the new master node. The new master nodecan monitor the status of the ring network by receiving the health check frame H. This configuration enables continuous monitoring for a failure occurring in the ring network during replacement of the master node.