  The convergence of IT and OT technologies results in the need for efficient
network management solutions for automotive and industrial automation
environments. However, configuring real-time Ethernet networks while
maintaining the desired QoS is challenging due to the dynamic nature of OT
networks and the high configuration parameters. This paper introduces an
SDN-based self-configuration framework for the fully automated configuration of
TSN networks. Unlike standard TSN configuration, we remove end-host-related
dependencies and put flows initially on default paths to extract traffic
characteristics by monitoring network traffic at edge switches. Communicated to
a central SDN controller, these characteristics allow to move the flows to
optimal paths while maintaining hard real-time guarantees, for which we also
formulate an optimization problem. Our simulation results indicate that the
proposed self-configuration approach works properly for different network sizes
and numbers of end-hosts. Even though it slightly increases the average latency
of critical frames, it still provides a certain level of real-time guarantee
without any prior knowledge of flows.
