OpenFlow: enabling innovation in campus networks
ACM SIGCOMM Computer Communication Review
The controller placement problem
Proceedings of the first workshop on Hot topics in software defined networks
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The research introduced in this paper focuses on controller scalability and performance issues in Software-Defined Networks (SDNs), and discusses a new routing scheme that leverages a variation of Source Routing for use in OpenFlow-based networks. The research aims to reduce the state needed to be distributed to the network devices by the controller(s) in SDNs, and in return improve the scale, convergence time, fault tolerance and cost of such network architectures.