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. 12, 2014
Filed:
Dec. 09, 2011
Jim Guichard, New Boston, NH (US);
Luca Martini, Lakewood, CO (US);
Keyur Patel, San Jose, CA (US);
Thomas David Nadeau, Hampton, NH (US);
Jim Guichard, New Boston, NH (US);
Luca Martini, Lakewood, CO (US);
Keyur Patel, San Jose, CA (US);
Thomas David Nadeau, Hampton, NH (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
The protection of multi-segment pseudowires by utilizing backup paths is disclosed herein. Disclosed embodiments include methods that establish at least one backup path for multi-segment pseudowires, the establishing being performed prior to detection of failure in the primary path. Upon detecting a path failure, the detected failure is signaled to the head-end, a backup path is chosen, and reachability information associated with the chosen backup path is signaled across the backup path before reverse traffic is switched to the backup path. In other disclosed embodiments, apparatus are configured to establish, prior to detection of failure in the primary path, at least one backup path for the multi-segment pseudowire.