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:
May. 06, 2014
Filed:
Jan. 25, 2012
Danny Prairie, Kanata, CA;
Yufei Shi, Kanata, CA;
George Swallow, Boston, MA (US);
Thomas D. Nadeau, Hampton, NH (US);
Vanson Lim, Cambridge, MA (US);
Jean-philippe Vasseur, Dunstable, MA (US);
Danny Prairie, Kanata, CA;
Yufei Shi, Kanata, CA;
George Swallow, Boston, MA (US);
Thomas D. Nadeau, Hampton, NH (US);
Vanson Lim, Cambridge, MA (US);
Jean-Philippe Vasseur, Dunstable, MA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Optimal automated exploration of hierarchical Multiprotocol Label Switching Label Switch Paths (MPLS LSPs) is disclosed. A path verification message (PVM) is transmitted from an initial router. Each label in the PVM's label stack corresponds to a hierarchy layer and is associated with a time-to-live (TTL) field. The TTL field for the label of a current layer is set so the PVM travels one hop from the initial router. In response, a reply message indicating that the PVM reached its destination is received.