ASM-SDN: an automated station migration system in cluster-based heterogeneous software-defined network

ASM-SDN: an automated station migration system in cluster-based heterogeneous software-defined network

연구 분야: Networking

학회: The Journal of Supercomputing

Software-Defined Networking (SDN) is a paradigm that intends to decouple the control and data layers. It has provided us with a shift in the power of the network to turn into a singular centralized entity. This allows for the introduction of a better form of network management. The traditional SDN architecture uses a single controller to control the networks, which can be prone to exhibiting the flaws of a Single Point of Failure (SPoF) system. In order to overcome the hurdle of SPoF, researchers have come up with practices involving initializing a cluster of controllers to handle failing controllers. However, minimal advances exist on the frontier of controller heterogeneity, and mobility in SDNs. In this paper, we propose ASM-SDN as a solution to minimize the packet loss during Station Migration scenarios in Heterogeneous Controllers Clusters. The proposed solution incorporates three complementary mechanisms to establish Fault Tolerance: Controller Prioritization mechanism based on the Markov Chain rule, the Migrating Station Detection mechanism to support Station Migration in ASM-SDN externally, and Flow Table Modifier mechanisms, for controllers that lack the feature set for Automated Station Migration. The results indicate that ASM-SDN can provide better network performance in terms of mobility in comparison to the traditional system.