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:
Jun. 23, 2015
Filed:
Jan. 13, 2012
Fang Hao, Morganville, NJ (US);
Muralidharam S. Kodialam, Marlboro, NJ (US);
Tirunell V. Lakshman, Morganville, NJ (US);
Haoyu Song, Edison, NJ (US);
Martin Zimgibl, Middletown, NJ (US);
Fang Hao, Morganville, NJ (US);
Muralidharam S. Kodialam, Marlboro, NJ (US);
Tirunell V. Lakshman, Morganville, NJ (US);
Haoyu Song, Edison, NJ (US);
Martin Zimgibl, Middletown, NJ (US);
Alcatel Lucent, Boulogne-Billancourt, FR;
Abstract
A manner of providing redundancy protection for a data center network that is both reliable and low-cost. In a data center network where the data traffic between numerous access nodes and a network core layer via primary aggregation nodes, an optical network device such as and OLT (optical line terminal) is provided as a backup aggregation node for one or more of the primary aggregation nodes. When a communication path through a primary aggregation node fails, traffic is routed through the optical network device. In a preferred embodiment, a communication link is formed from a plurality of access nodes to a single port of the OLT or other optical network device via an optical splitter that combines upstream transmissions and distributes downstream transmissions. The upstream transmissions from the plurality of access nodes may occur according to an allocation schedule generated when the backup aggregation node is needed.