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:
Feb. 04, 2014
Filed:
Oct. 03, 2008
Arjen Boers, Sitges, ES;
Eric C. Rosen, Arlington, MA (US);
Jacob Ijsbrand Wijnands, Leuven, BE;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method is provided in one example embodiment and includes receiving a label-mapping message at a first router. The first router does not record the label-mapping message. The method further includes sending the label mapping message toward a root router of a Multipoint Label Switched Path (MPLSP) in a network and, further, evaluating a path vector sent from the root router to identify whether a first router's address is part of the path vector. If the first router's address is present in the path vector then a label mapping associated with the path vector is not installed by the first router. In more detailed embodiments, the first router identifies that if the first router's address is part of the path vector, a loop is present in the network. If the first router's address is not part of the path vector, the label mapping associated with the path vector is recorded.