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专门的关键性应用系统要求通过冗余来达到可靠地运行,现在有着多种串行设备连接在以太网的主干上,因而开发一个鲁棒性足够强的系统,使得即使出现了多个连接故障也可以保证数据畅通,这是我们面临的一个重大挑战。现在已经有大量不同的物理布局方案用子形成一个双冗余的以太网络(参见图1)。在图1中的最顶部是主机应用系统(SCADA,HMI,PLC),两个椭圆代表两个冗余的以太网段,但该图并没有说明这是通过普通的网络硬件还是专用的硬件设备实现的。
Dedicated, mission-critical applications require reliable operation through redundancy, and now with a variety of serial devices connected to the backbone of the Ethernet, a robust enough system is developed that allows multiple connection failures It also guarantees a smooth flow of data, which is a major challenge we face. There are a large number of different physical layout schemes that now form a dual redundant Ethernet network (see Figure 1). At the very top of Figure 1 is the host application (SCADA, HMI, PLC) with two ellipses representing two redundant Ethernet segments, but this figure does not state whether this is via common network hardware or a dedicated hardware device Achieve.