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The convergence of IT and OT technologies results in the need for efficientnetwork management solutions for automotive and industrial automationenvironments. However, configuring real-time Ethernet networks whilemaintaining the desired QoS is challenging due to the dynamic nature of OTnetworks and the high configuration parameters. This paper introduces anSDN-based self-configuration framework for the fully automated configuration ofTSN networks. Unlike standard TSN configuration, we remove end-host-relateddependencies and put flows initially on default paths to extract trafficcharacteristics by monitoring network traffic at edge switches. Communicated toa central SDN controller, these characteristics allow to move the flows tooptimal paths while maintaining hard real-time guarantees, for which we alsoformulate an optimization problem. Our simulation results indicate that theproposed self-configuration approach works properly for different network sizesand numbers of end-hosts. Even though it slightly increases the average latencyof critical frames, it still provides a certain level of real-time guaranteewithout any prior knowledge of flows.

SDN-based Self-Configuration for Time-Sensitive IoT Networks