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一、以太网的基本概念与特点 以太网在速度、价格、方便安装和支持能力之间取得了很好的均衡。所以在已安装的LAN网络中,大约80％使用的是以太网。 以太网标准是由电气和电子工程师协会(IEEE)规定的,通常称为IEEE802.3规范。规范包括了配置以太网LAN的规定,可以使用的介质类型和网络中的各个成分应该如何交互作用。以太网协议提供了OSI参考模型的物理和数据链路层中调用的各种服务。 规范中规定的一个重要条文是连接到以太网LAN上的各个站所使用的访问方法,它称之为“带冲突检测的载波侦听多路访问”(CSMA/CD)。在这个方法
First, the basic concepts and characteristics of Ethernet Ethernet speed, price, ease of installation and support has made a good balance between. So about 80% of the installed LAN networks use Ethernet. The Ethernet standard is specified by the Institute of Electrical and Electronics Engineers (IEEE) and is commonly referred to as the IEEE 802.3 specification. The specification includes provisions for configuring the Ethernet LAN, the types of media that can be used, and how the various components of the network interact. The Ethernet protocol provides various services invoked in the physical and data link layers of the OSI reference model. An important provision of the specification is the access method used by each station connected to the Ethernet LAN, which is called “CSMA / CD with collision detection”. In this method