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. 19, 2025
Filed:
Jan. 30, 2023
Schweitzer Engineering Laboratories, Inc., Pullman, WA (US);
Tristan Lloyd Mullis, Pullman, WA (US);
Schweitzer Engineering Laboratories, Inc., Pullman, WA (US);
Abstract
A device may include a loop detection subsystem to place a network flow on a first switch to forward any received open flow discovery protocol (OFDP) packets to the software-defined network (SDN) controller. The device may cause the first switch to egress a query OFDP packet out of a first port of the first switch. The device may detect that the first port on the first switch is attached to a network loop based on the same query OFDP packet being ingressed by the first port of the first switch. The device may implement a remedial action in response to the detected network loop.