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. 29, 2008
Filed:
Dec. 16, 2002
Fuming Wu, Frisco, TX (US);
Frederick H. Skoog, Colleyville, TX (US);
Fuming Wu, Frisco, TX (US);
Frederick H. Skoog, Colleyville, TX (US);
Alcatel Lucent, Paris, FR;
Abstract
Method and apparatus for implementing a constraint-based shortest path first ('CSPF') technique for dynamically switched optical transport networks are described. One embodiment comprises a traffic network element ('TNE') in a network comprising a traffic engineering network database (“TEND”) that stores network topology information for the network and bandwidth availability information for links in the network; and a routing engine that receives a request for a label switched path (“LSP”) with specified constraints, processes network topology information from the TEND to create a network graph comprising links meeting the specified constraints, and computes a primary path through the network, wherein the primary path comprises links selected from the network graph.