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:
Jul. 28, 2015

Filed:

Jan. 25, 2013
Applicant:

Argela Yazilim VE Bilisim Teknolojileri San. VE Tic. A.s., Istanbul, TR;

Inventors:

Burak Gorkemli, Istanbul, TR;

Murat Parlakisik, Istanbul, TR;

Nazli Guney, Istanbul, TR;

Seyhan Civanlar, Istanbul, TR;

Oguz Sunay, Istanbul, TR;

Uygar Ozen, Istanbul, TR;

Melih Karaman, Istanbul, TR;

Bulent Kaytaz, Istanbul, TR;

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/751 (2013.01); H04L 12/715 (2013.01); H04L 12/24 (2006.01); H04L 12/933 (2013.01);
U.S. Cl.
CPC ...
H04L 45/02 (2013.01); H04L 45/64 (2013.01); H04L 41/12 (2013.01); H04L 49/15 (2013.01);
Abstract

Controllers in a Software Defined Network (SDN) automatically discover and authenticate each other as part of the control plane operations, without any need for manual configuration of other controllers. The new capability of such controllers is based on Controller-Advertisement messages transferred between controllers in the same or different SDNs. In doing so, multiple controllers can be used for load sharing, improved reliability under failure of a controller by enabling seamless take over and recovery. Moreover, controllers can cooperate to enable end-to-end services to work across multiple SDNs. Controller-Advertisement messages are also used to check the health statuses of discovered controllers in the same or different SDNs.


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