ABSTRACT
Software-defined networking (SDN) has become a promising trend for future Internet development. Current researches mainly focus on flow management, security, and quality of service (QoS) using OpenFlow [1] switch in data center network or campus network. However, the number of OpenFlow application cases to resolve a real problem in a production network is still limited. In the production network, where routers are dominant, some of the challenges in the implementation and deployment of SDN are the integration of existing protocols inside a network device with new protocols, the tradeoff between hardware cost, and deployment profit of network evolution to SDN.
