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:
Aug. 22, 2006
Filed:
Jul. 31, 2002
Dah Ming Chiu, Acton, MA (US);
Miriam C. Kadansky, Westford, MA (US);
Radia J. Perlman, Carlisle, MA (US);
Murat Yuksel, Troy, NY (US);
Dah Ming Chiu, Acton, MA (US);
Miriam C. Kadansky, Westford, MA (US);
Radia J. Perlman, Carlisle, MA (US);
Murat Yuksel, Troy, NY (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
A distributed system and method generate 'layered routes' that reflect a layered representation of a network, which representation provides deadlock-free routes. The layered representation consists of an ordered set of layers, where each layer is a deadlock-free sub-topology of the network. In determining routes, the links used in each route are constrained to be taken from layers of non-decreasing order as the route extends from source to destination. A device that determines a better or equal cost path to a destination node with respect to its current path to that node sends a route information message to its neighbor devices. The receiver of a route information message may then accept the message and begin using the new path described by the message, or reject the message without using the new path.