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由于科学技术的迅速发展,计算机和网络的发展越来越快,更新的周期越来越短。同时人们对信息的需求也越来越高。最近出现的千兆位以太网以及相关的布线系统和网络产品更是引起人们的关注。 一、千兆位以太网 目前,IEEE Gigabit Ethernet Alliance(千兆位以太网联盟)正在开发名为1000BASE-SX,LX(针对光纤),和1000BASE-T(针对铜缆)的千兆位以太网的标准。IEEE计划于1998年3月发布1000BASE-SX,并于1998年9月发布1000BASE-T。 目前提出的千兆位以太网(1000BASE-T)标准将使用全双工传输模式。全双工传输指的是一个线对同时用于发送和接收信息,工作站在不同线对上传送数据,因而没有冲突,在传送之前不必等待,所以不需要
Due to the rapid development of science and technology, the development of computers and networks is getting faster and faster, and the renewal cycle is getting shorter and shorter. At the same time, people’s demand for information is also getting higher and higher. The recent emergence of Gigabit Ethernet and related cabling systems and networking products is attracting people’s attention. A, Gigabit Ethernet Currently, the IEEE Gigabit Ethernet Alliance (Gigabit Ethernet Alliance) is developing Gigabit Ethernet, called 1000BASE-SX, LX (for optical), and 1000BASE-T (for copper) Standard. The IEEE plans to release 1000BASE-SX in March 1998 and 1000BASE-T in September 1998. The proposed Gigabit Ethernet (1000BASE-T) standard will use full-duplex transmission mode. Full-duplex transmission refers to a pair of wires used to send and receive information simultaneously. Workstations transmit data on different pairs, so there is no conflict. There is no need to wait before transmitting, so there is no need