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. 17, 2022
Filed:
Sep. 30, 2020
Juniper Networks, Inc., Sunnyvale, CA (US);
Manish Talwar, Lunenburg, MA (US);
Ajay Kachrani, Nashua, NH (US);
Gert Grammel, Ditzingen, DE;
Hao Wang, Kanata, CA;
Tanweer Biswas, Ottawa, CA;
Juniper Networks, Inc., Sunnyvale, CA (US);
Abstract
Embodiments improve error detection and recovery in media access control security sessions. A MACsec session is torn down after three liveness time intervals elapse without receiving a MACsec key exchange protocol data unit (MKPDU) from a remote peer. This delay between a cessation of effective network communication over the MACsec session and the expiration of the three 'liveness' intervals results in increased packet loss and an increased network convergence time as a network continues to route/forward data over the MACsec session for a period of time after the MACsec session has entered secure block mode. To solve this problem, embodiments define a new alarm, called a MACsec link alert, which is raised earlier than a MACsec session timeout generated by traditional embodiments. The MACsec link alert is raised, by at least some embodiments, after a failure to successfully receive an MKPDU from the remote peer after a single MACsec 'liveness' timeout interval elapses.