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:
Dec. 02, 2008
Filed:
Oct. 02, 2003
Andrea Fumagalli, Dallas, TX (US);
Sandeep Darisala, Richardson, TX (US);
Parthasarathy Kothandaraman, Richardson, TX (US);
Marco Tacca, Richardson, TX (US);
Luca Valcarenghi, Vercelli, IT;
Maher Ali, Plano, TX (US);
David Eli-dit-cosaque, Richardson, TX (US);
Andrea Fumagalli, Dallas, TX (US);
Sandeep Darisala, Richardson, TX (US);
Parthasarathy Kothandaraman, Richardson, TX (US);
Marco Tacca, Richardson, TX (US);
Luca Valcarenghi, Vercelli, IT;
Maher Ali, Plano, TX (US);
David Eli-Dit-Cosaque, Richardson, TX (US);
Alcatel Lucent, Paris, FR;
Abstract
Method and apparatus for dynamic provisioning of reliable connections in the presence of multiple failures in optical networks are described. One embodiment is a method for allocation of protection paths after a failure in an optical network. The method comprises, responsive to a failure in an active lightpath, switching traffic on the active lightpath to a protection path; subsequent to the switching, identifying all active lightpaths in the network that no longer have an available protection path; and attempting to allocate a protection path to each of the identified active lightpaths.