Recently, both the academia and industry have initiated research directed toward the integration of software-defined networking (SDN) technologies into the next generation of networking. In this paradigm, SDN transfers the control function from the traditional distributed network equipment to the controllable computing devices, which makes the underlying network infrastructure to network services and applications. In this study, we survey OpenFlow-based SDN solutions that were recently proposed in both academia and industry. We consider technical issues, including SDN requirement, OpenFlow-based approach, challenges, and possible approaches. In addition, security breaches and possible solutions are described. Our survey is based on recent research publications.
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