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:
Jan. 08, 2008
Filed:
Jan. 11, 2002
Nir Ben-dvora, Ramat Gan, IL;
Doron Oz, Even Yehuda, IL;
Roni Luxenberg, Ra'anana, IL;
Assaf Ben-amitai, Tel Aviv, IL;
Nir Ben-Dvora, Ramat Gan, IL;
Doron Oz, Even Yehuda, IL;
Roni Luxenberg, Ra'anana, IL;
Assaf Ben-Amitai, Tel Aviv, IL;
Cisco Systems O.I.A. (1988)Ltd., Herzelia, IL;
Abstract
A novel and useful mechanism for optical ring networks providing concentrator redundancy in the event of a failure of a concentrator. The nodes in a network are connected to dual concentrators to form bi-directional dual counter-rotating optical rings. The failure of one of the concentrators is detected and the internal connections of the surviving concentrator are reconfigured to form a single ring that provides an alternate communication path thus preventing the collapse of the ring. Reliability of optical rings is improved by enabling the ring to continue to function in the event of a concentrator failure.