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:
Mar. 04, 2003
Filed:
Sep. 23, 1999
Stephen D. Shew, Kanata, CA;
Kenneth G. Hayward, Kanata, CA;
Nortel Networks Limited, St. Laurent, CA;
Abstract
The present invention provides layer one, two and three (L /L /L ) Integration and L cut-through path utilization in an apparatus and method of fault recovery. A switch combines an IP router with L capabilities, and an L cross connect (optical or electrical). A network of such switches is configured with label switched paths (LSP) that correspond to layer (L ) cut-through paths. The layer (L ) cut-through path is over laid on the L cut-through path and the L cut-through path is used for IP data flows. Preferably, the L cut-through paths are defined as label switched paths (LSP) and the L cut-through paths are each an end-to-end path established with L cross connects associated with each switch.