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. 26, 2017
Filed:
Dec. 10, 2012
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventors:
David A. Christenson, Fergus Falls, MN (US);
James Venuto, Poughkeepsie, NY (US);
Assignee:
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/08 (2006.01); H04N 21/61 (2011.01); H04L 29/14 (2006.01); H04L 29/12 (2006.01);
U.S. Cl.
CPC ...
H04L 29/08099 (2013.01); H04L 29/08072 (2013.01); H04L 61/103 (2013.01); H04L 61/2046 (2013.01); H04L 69/40 (2013.01); H04N 21/61 (2013.01); H04L 61/2015 (2013.01);
Abstract
Techniques are described for detecting duplicate IP addresses at a DHCP relay agent. Embodiments identify a list of DHCP clients that have valid IP address leases from one or more DHCP servers. Additionally, network traffic from a first node passing through the DHCP relay agent is monitored. Embodiments then determine whether the first node is using a duplicate IP address, based on the monitored network traffic and the identified list of DHCP clients.