DSF: A Distributed SDN Control Plane Framework for the East/West Interface

The ever-increasing number of network-capable devices places a massive burden on modern networks. Communication infrastructure should provide quality-of-service essentials in terms high-bandwidth capacity, scalability, resiliency, and security. Programmable networks are viewed as the prevailing method encountering challenges introduced by accelerated expansion. ability software-defined networking (SDN) to separate control plane from data enable programmability network creates new ways architect network. centralization logic introduces complexities large-scale, distributed such performance bottlenecks reliability. Distributed SDN controllers have been proposed overcome concerns. lack communication standard among controllers, referred East/West interface, presents challenge adoption In this paper, we propose Framework (DSF) - framework for interface heterogeneous, synchronize topologies using standardized data-centric real-time publish/subscribe paradigm known Data Distribution Service (DDS). architectures DSF: flat, hierarchical, T-model. DSF is implemented multiple platforms evaluate performance: Floodlight Open Network Operating System (ONOS) controllers. Test cases with different configurations designed evaluation homogeneous heterogeneous planes. addition, comparison presented DSF-based ONOS versus Atomix-based cluster solutions.