Real-time networks based on Ethernet require robust quality-of-service for time-critical traffic. The Time-Sensitive Networking (TSN) collection of standards enables this in real-time environments like vehicle on-board networks. Runtime reconfigurations in TSN must respect the deadlines of real-time traffic. Software-Defined Networking (SDN) moves the control plane of network devices to the SDN controller, making these networks programmable. This allows reconfigurations from a central point in the network. In this work, we present a transactional model for network reconfigurations that are synchronously executed in all network devices. We evaluate its performance in a case study against nontransactional reconfigurations and show that synchronous transactions enable consistency for reconfigurations in TSN without increased latencies for real-time frames.

翻译：以以太网为基础的实时网络要求具有可靠的服务质量,以适应时间-临界交通。时间-敏锐网络(TSN)的标准收集使这一点在汽车机载网络等实时环境中得以实现。 TSN的运行时间重组必须尊重实时交通的最后期限。软件定义网络(SDN)将网络设备的控制平面转移到SDN控制器,使这些网络可以编程。这使得这些网络能够从网络的一个中心点进行重组。在这项工作中,我们提出了一个在所有网络设备中同步执行的网络重组交易模式。我们在一项针对非交易性重组的案例研究中评估其性能,并表明同步交易能够使网络设备重组的一致性,而不会增加实时框架的延迟。