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:
Jul. 07, 2026
Filed:
Oct. 18, 2023
Cisco Technology, Inc., San Jose, CA (US);
Venkatesh Nataraj, Union City, CA (US);
Angelica Jirina Semenec, Fremont, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
This disclosure describes techniques to establish and manage stateful multi-privileged control connections between edge devices and a controller of a SD-WAN. The described techniques may receive request(s) and/or data from edge device(s) that include certificates. The described techniques may utilize criteria to determine validity and acceptability of the certificates during authentication. Where the controller determines a certificate in invalid and acceptable, the described techniques move the edge device to a new quarantine state. In the quarantine state, an edge device maintains the control connection with the controller in order to remediate the certificate, but restricts access to the data plane to reduce security risks. A notification may be generated and displayed to an administrator in response to determining a certificate is invalid and acceptable and/or in response to moving the edge device to the quarantine state. Accordingly, the described techniques improve SD-WAN infrastructure and reduce security risks.