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:
Sep. 10, 2013
Filed:
Mar. 07, 2008
Jean-philippe Vasseur, Dunstable, MA (US);
Danny Prairie, Kanata, CA;
Jean-Philippe Vasseur, Dunstable, MA (US);
Danny Prairie, Kanata, CA;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
In one embodiment, a trigger is signaled to protect a tunnel from a head-end node to one or more tail-end nodes in a computer network via one or more intermediate nodes along the tunnel. One or more receiving nodes along the tunnel receive the trigger, and in response, establish a tunnel connectivity verification session from the receiving node to a corresponding downstream next-next-hop (NNHOP) node along the tunnel. Illustratively, the head-end node may thus recompute a new tunnel path excluding a path segment corresponding to a particular failed tunnel connectivity verification session.