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Network controller is the core of the OpenFlow-Based Software-Defined Networks (SDN). High availability of network controller is an urgent need objectively. The appearance of controller instance fault should not be perceived by data plane. During the fault recovery, OpenFlow messages, especially asynchronous message from data plane, should not be discarded.(More)
Software-Defined Networking (SDN), enabled by Open Flow, represents a paradigm shift from traditional network to the future Internet. Replicate or distributed controllers have been proposed to address the issues of availability and scalability that a centralized controller suffers from. However, it lacks a flexible mechanism to balance load among(More)
The rapid development of internet technology and mobile communication technology has brought significant changes to the way in which people retrieve information and experience application service. We believe that application migration can perfectly solve these problems, if the continuity of application service experience and efficiency of migration process(More)
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