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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.:

US 11316775 B1

PDFFull Text
Date of Patent:
Apr. 26, 2022

Filed:

Jun. 29, 2017

Maintaining coherency in distributed operating systems for network devices

Applicant:

Juniper Networks, Inc., Sunnyvale, CA (US);

Inventors:

David M. Katz, Santa Cruz, CA (US);

Ross W. Callon, Westford, MA (US);

Scott Mackie, Santa Cruz, CA (US);

Dennis C. Ferguson, Palo Alto, CA (US);

Assignee:

Juniper Networks, Inc., Sunnyvale, CA (US);

Attorney:

Shumaker & Sieffert, P.A.

Primary Examiner:

Dhairya A Patel

Int. Cl.
CPC ...
H04L 12/24 (2006.01); H04L 45/00 (2022.01); H04L 45/302 (2022.01); G06F 9/48 (2006.01); H04L 41/12 (2022.01); H04L 45/48 (2022.01); G06F 9/50 (2006.01); H04L 41/0654 (2022.01); H04L 45/021 (2022.01); H04L 12/64 (2006.01); H04L 41/0873 (2022.01); G06F 11/16 (2006.01); H04L 43/0811 (2022.01); H04L 41/082 (2022.01); G06F 11/14 (2006.01); H04L 45/58 (2022.01);
U.S. Cl.
CPC ...
H04L 45/14 (2013.01); G06F 9/4843 (2013.01); G06F 9/5061 (2013.01); H04L 41/0654 (2013.01); H04L 41/12 (2013.01); H04L 45/021 (2013.01); H04L 45/302 (2013.01); H04L 45/48 (2013.01); G06F 11/1438 (2013.01); G06F 11/1658 (2013.01); G06F 2201/81 (2013.01); H04L 41/082 (2013.01); H04L 41/0873 (2013.01); H04L 43/0811 (2013.01); H04L 45/583 (2013.01); H04L 2012/6467 (2013.01);
Abstract

In general, techniques are described for maintaining coherency in distributed operating systems for network devices. A network device comprising hardware computing nodes may be configured to perform the techniques. The hardware computing nodes may execute a distributed operating system. At least one the hardware computing nodes may determine whether one or more of the plurality of hardware computing nodes has failed and is no longer supporting execution of the distributed operating system, and determine whether remaining ones of the plurality of hardware computing nodes exceeds a quorum threshold. The at least one of the hardware computing nodes may further restart, when the remaining ones of the plurality of hardware computing nodes is less than the quorum threshold, the distributed operating system.

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