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. 22, 2012
Filed:
Sep. 15, 2009
Ming-huang Ling, Shing Tien, TW;
Ming-chuang Chen, Taipei, TW;
Ming-Huang Ling, Shing Tien, TW;
Ming-Chuang Chen, Taipei, TW;
Moxa Inc., Shing Tien, TW;
Abstract
The present invention relates to a method for conducting redundancy checks in a chain network, wherein the two ends of the chain network are equipped with a first switch and a second switch respectively, and a port of the first or second switch used for communicating with an external network is set to be blocked, so that when an link failure happens to any switch of the chain network, the two switches close to the link failure port sends control packets to the first and second switches respectively to forward the port that is originally blocking, thus making the network to return to normal state quickly. Besides, as the first and second switches are used to connect other chain networks, external network devices or external redundant network architectures, it allows more network nodes to be included in single network architecture and provides flexibility and compatibility in use by including different redundancy mechanisms.