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一、前言局部网络是指一个有限定地区范围的通信网络,由于很难对地区范围加以严格限定,因而至今没有对局部网络下一严格定义。尽管如此,从目前已出现的各种各样局部网络产品及IEEE局部网络课题组(802委员会)的建议中,可以看出局部网络的一些特点,它们是:1.地理范围有限局部网络内的计算机限于建在一个大楼或建筑群内,而不是城市与城市或大陆与大陆之间。因此涉及的距离一般为几公里,而不是几百或几千公里。通常为一个部门所占有,而且可以做到功能专用。
I. INTRODUCTION Local network refers to a communication network with a limited area. Since it is very difficult to strictly limit the scope of the area, so far no strict definition of the local network has been made. Nonetheless, some of the features of local networks can be discerned from the various proposals for emerging local networking products and the IEEE Local Networking Task Force (the 802 Committee): 1. Within a limited geographical area Computers are limited to being built in a building or complex of buildings, not cities and cities or between the mainland and the mainland. Therefore, the distance involved is generally a few kilometers instead of hundreds or thousands of kilometers. It is usually owned by one department and can be function-specific.