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:
Jul. 05, 2016
Filed:
Dec. 17, 2013
Hitachi, Ltd., Tokyo, JP;
Masayuki Takase, Tokyo, JP;
Hideki Endo, Tokyo, JP;
Yoshihiro Ashi, Tokyo, JP;
Taisuke Ueta, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
When a communication path between a user site and a dual-homed data center is made redundant, a communication between the user site and a server within a data center can be continued. An edge node DCE-1 of a data center-and edge nodes TPE-1, TPE-2 of a transport network are connected to each other by a link TPE-1-1 and a link TPE-2-1, respectively. The edge nodes TPE-3 and TPE-1, TPE-2 that hold a node AEof a user siteare set with an LSPof an active system, and an LSPof a backup system, respectively. One of the links is active, and the other link is backup, and the LSP of the TPE node having the active link in the LSPand the LSPis made active. The respective links are prioritized, and the links are switched to an active state in order from the links higher in the order of priority when a link failure or an LSP failure occurs.