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:
Apr. 06, 2010
Filed:
Jun. 05, 2006
Balaji Rajagopalan, Sunnyvale, CA (US);
Man-tung T. Hsiao, Cupertino, CA (US);
Vivek Venkatraman, Santa Clara, CA (US);
Ravindra Sunkad, Pleasanton, CA (US);
Ramkumar Krishnamoorthy, Cupertino, CA (US);
Balaji Rajagopalan, Sunnyvale, CA (US);
Man-Tung T. Hsiao, Cupertino, CA (US);
Vivek Venkatraman, Santa Clara, CA (US);
Ravindra Sunkad, Pleasanton, CA (US);
Ramkumar Krishnamoorthy, Cupertino, CA (US);
Tellabs San Jose, Inc., Naperville, IL (US);
Abstract
A method or corresponding apparatus in an exemplary embodiment of the present invention monitors an operational status of network links and retrieves or receives the operational status. The operational status is stored (e.g., within 50 msec) on an ongoing basis. The operational status corresponds to an operational LSP from among a primary LSP and secondary LSP(s) used to service traffic via the network links to maintain network connectivity via the LSPs. The secondary LSP(s) may be either a bypass LSP or a backup LSP, where each LSP is Fast Re-route (FRR) enabled. Further, correspondence between the primary LSP, secondary LSP(s), and the network links may be tracked. In order to deliver network traffic via the operational LSP known to service traffic between the source and destination, a link identifier may be used. The link identifier is determined from the source and destination information within the network traffic.