以太网通常被认为是一种功能强大的、经得起未来考验的总线系统,其低成本以及标准化的物理设计尤其引人注目。因此,它总是让人感觉非常有前景,至少,每当有新的基于以太网的总线系统推出的时候。然而,再看一看,这种印象变得有点黯然,这有一点是因为以太网提供的技术或可能性,但更多地是因为许多不兼容的解决方案在市场上相互竞争。 Ethernet is generally considered to be a powerful, future-proof bus system, with its low-cost and standardized physical design particularly noticeable. Therefore, it always makes people feel very promising, at least, whenever a new Ethernet-based bus system is introduced. However, taking a closer look, the impression gets a bit gloomy, thanks in part to the technology or possibilities offered by Ethernet, but more because many incompatible solutions compete in the marketplace.