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. 02, 2017
Filed:
Nov. 03, 2015
Applicant:
Cisco Technology, Inc., San Jose, CA (US);
Inventors:
Kwok Keung Lee, Plano, TX (US);
Hsiang Ann Chen, Austin, TX (US);
Jason Xiaoguang Chen, San Jose, CA (US);
Rakesh Kumar, Austin, TX (US);
Assignee:
Cisco Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/08 (2006.01); G06F 11/00 (2006.01); H04J 1/16 (2006.01); H04L 12/26 (2006.01); H04L 12/24 (2006.01); H04L 12/723 (2013.01);
U.S. Cl.
CPC ...
H04L 43/0852 (2013.01); H04L 41/5009 (2013.01); H04L 41/5019 (2013.01); H04L 43/087 (2013.01); H04L 43/106 (2013.01); H04L 45/50 (2013.01);
Abstract
A method and apparatus to provide hop-by-hop tracking for a communication network is described. In one embodiment, each router verifies that a next downstream router supports tracking and in response, adds a tracking indicator and a timestamp to the data packet. An end router provides a compilation of all the timestamps back to the originating router.