Modern transportation vehicles (e.g., cars and airplanes) represent a seamless fusion of safety-critical and consumer electronics systems. In order to save space inside a vehicle, implemented network infrastructure should be compact, and thus all data (critical and noncritical) should be ideally transmitted through a single physical network. The TTEthernet represents a great candidate to support aforementioned coexistence of mixed-critical traffic. Furthermore, a prerequisite for deterministic communication is properly established and maintained synchronization between components in the network. Within this article, we give an overview of the TTEthernet mixed-critical communication capabilities and brief details of required synchronization mechanisms. Furthermore, we provide analysis of the impact that one faulty switch makes to an End System. We discuss repercussions of the faults to the consumer grade communications, offer potential solutions, and highlight main takeaways. Finally, all observations are supported by a brief simulations results.

中文翻译：

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TTEthernet混合关键通信：故障交换机的概述和影响

现代运输工具（例如汽车和飞机）代表了安全关键型和消费电子系统的无缝融合。为了节省车辆内部的空间，已实现的网络基础结构应该紧凑，因此理想情况下，所有数据（关键数据和非关键数据）都应通过单个物理网络传输。TTEthernet是支持上述混合关键流量并存的理想选择。此外，确定性通信的前提条件是在网络中组件之间正确建立并保持同步。在本文中，我们概述了TTEthernet混合关键通信功能，并简要介绍了所需的同步机制。此外，我们提供了一个故障开关对终端系统的影响的分析。我们讨论了对用户级通信故障的影响，提供了可能的解决方案，并重点介绍了主要的要点。最后，所有的观察结果都得到简短的模拟结果的支持。