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:
Mar. 21, 2017

Filed:

Aug. 17, 2015
Applicant:

Fortinet, Inc., Sunnyvale, CA (US);

Inventor:

Tim Millet, Mountain View, CA (US);

Assignee:

Fortinet, Inc., Sunnyvale, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/42 (2006.01); H04L 12/433 (2006.01); H04L 12/24 (2006.01);
U.S. Cl.
CPC ...
H04L 12/42 (2013.01); H04L 12/433 (2013.01); H04L 41/12 (2013.01);
Abstract

Methods and systems for determining a token master on a ring network are provided in which possession of an arbitration token permits a blade participating in the ring network to transmit a packet. According to one embodiment, when an event at a blade represents expiration of a timeout period for receipt of the token, a new token is transmitted onto the ring network. When the event represents receipt of the token, then the priority of the originating blade is compared that of the first blade. When the originating blade is higher priority, the token is transmitted to the next blade. When the originating blade is lower priority, the first blade is set as the originating blade and the token is transmitted to the next blade. When the priorities are equal, the blade becomes responsible for periodically transmitting a discovery marker onto the ring network to facilitate topology discovery.


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