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:
Nov. 15, 2011
Filed:
Aug. 12, 2009
Vijayalakshmi Kanthamneni, Allentown, PA (US);
Ravi Krishnaswamy, Stewartsville, NJ (US);
Ning LI, Orefield, PA (US);
Donna M. Nemshick, Weatherly, PA (US);
Tim Reinhard, Bethlehem, PA (US);
Steven Rothweiler, Bethlehem, PA (US);
Robert L. Smigielski, Macungie, PA (US);
Martin Trew, Wharton, NJ (US);
Swaminathan Venkatakrishnaprasad, Waxhaw, NC (US);
Wen N. Wang, Charlottesville, VA (US);
Jay P. Wilshire, Pennsburg, PA (US);
Vijayalakshmi Kanthamneni, Allentown, PA (US);
Ravi Krishnaswamy, Stewartsville, NJ (US);
Ning Li, Orefield, PA (US);
Donna M. Nemshick, Weatherly, PA (US);
Tim Reinhard, Bethlehem, PA (US);
Steven Rothweiler, Bethlehem, PA (US);
Robert L. Smigielski, Macungie, PA (US);
Martin Trew, Wharton, NJ (US);
Swaminathan Venkatakrishnaprasad, Waxhaw, NC (US);
Wen N. Wang, Charlottesville, VA (US);
Jay P. Wilshire, Pennsburg, PA (US);
LSI Corporation, Milpitas, CA (US);
Abstract
In an N+1 protection scheme for a router in a data or telecommunications network, a processor-based protection unit has a replica device handle, corresponding to each of the N working units, stored in the protection unit's local memory. Each replica device handle is an image of the connections provided by the corresponding working unit. In one implementation, upon detection of a failure of one of the working units, the router's controller unit sends a single command to instruct the protection unit to reconfigure itself using the corresponding locally stored replica device handle to assume the routing functions of the failed working unit.