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.

Date of Patent:
Jan. 07, 2025

Filed:

Dec. 21, 2021
Applicant:

Cisco Technology, Inc., San Jose, CA (US);

Inventors:

Sreejith Avikkal, Ottawa, CA;

Nancy Patricia Cam-Winget, Mountain View, CA (US);

Lizbeth Berenice Guerra Martinez, Mexico City, MX;

Natasha Wong, Torrance, CA (US);

Jessica Lynne Poole, Oakland, CA (US);

Assignee:

Cisco Technology, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/40 (2022.01); H04L 7/10 (2006.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
H04L 7/10 (2013.01); H04L 9/3247 (2013.01); H04L 9/3297 (2013.01); H04L 63/0876 (2013.01);
Abstract

In one embodiment, methods for monitoring devices within a network by a controller are described. The method may include receiving a first request from a first device to authenticate a role of the first device as a grandmaster in a precision time protocol (PTP). Additionally, the method may include granting the first request designating the role of the first device as the grandmaster. The method may further include receiving a second request from a second device to authenticate that a clock announce message is from an authorized grandmaster. Additionally, the method may include determining whether the first device is authorized to send the clock announce message to the second device and, based on the determining, sending a message granting or denying permission for the first device to sync with the second device.


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