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. 09, 2010
Filed:
Jul. 15, 2004
Jean-philippe Vasseur, Dunstable, MA (US);
Stefano B. Previdi, Rome, IT;
David D. Ward, Somerset, WI (US);
Robert Goguen, Acton, MA (US);
Jean-Philippe Vasseur, Dunstable, MA (US);
Stefano B. Previdi, Rome, IT;
David D. Ward, Somerset, WI (US);
Robert Goguen, Acton, MA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A technique treats a protected forwarding adjacency (FA) as a dynamic entity in that it allows a backup tunnel associated with the FA to carry traffic for the FA, when it's primary tunnel has failed, up to a predetermined amount of time. If after the predetermined amount of time has elapsed and the FA has not recovered (e.g., the primary tunnel has not been reestablished), a network topology change is automatically triggered causing the network to converge on a new network topology. By triggering the network topology change, a path that is more optimal than the path associated with the backup tunnel may be subsequently determined to carry the traffic.