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:
Aug. 15, 2017
Filed:
Dec. 16, 2014
Nec Laboratories America, Inc., Princeton, NJ (US);
Hui Zhang, Princeton Junction, NJ (US);
Behnaz Arzani, Philadelphia, PA (US);
Franjo Ivancic, Princeton, NJ (US);
Junghwan Rhee, Princeton, NJ (US);
Nipun Arora, Plainsboro, NJ (US);
Guofei Jiang, Princeton, NJ (US);
NEC Corporation, Tokyo, JP;
Abstract
Methods and systems for finding a packet's routing path in a network includes intercepting control messages sent by a controller to one or more switches in a software defined network (SDN). A state of the SDN at a requested time is emulated and one or more possible routing paths through the emulated SDN is identified by replaying the intercepted control messages to one or more emulated switches in the emulated SDN. The one or more possible routing paths correspond to a requested packet injected into the SDN at the requested time.