Fair and efficient bandwidth allocation of inelastic traffic in SDNs

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Software Defined Networking (SDN) is a new networking paradigm with several revolutionary aspects including profound improvements in resource allocation efficiency, real-time configurability, and network management. SDN redefines the network into three logical layers: application, control, and infrastructure (a.k.a. data forwarding). The infrastructure layer forwards data at high speeds while the control layer centrally implements network intelligence and communicates with the infrastructure layer (the lower layer) using a standardized protocol like OpenFlow, provides access to network resources, and invokes control capabilities to the application layer (the upper layer) through open programming interface. By decoupling the control plane from the packet forwarding plane through programmable control, SDN places more control of network