引言目前,有很多机构都拥有局域网,当局域网间互连时,用户就可以自由地进行数据和文件的交换。由于局域网彼此间相距不是太远,可通过网桥和路由器很方便地连接在一起,使用户产生一个错觉,认为这些 LAN 本身就是一个完整的大网,而不是若干独立的局域网的集合。本文介绍如何把多个相距较远的局域网通过互连产生上述效果的工作原理。如果几个局域网地处同一个地方(例如在同一个楼房或 Introduction At present, many organizations have LANs. When LANs are interconnected, users can freely exchange data and files. Since the LANs are not too far apart from each other, they can be conveniently connected by bridges and routers, giving users the illusion that these LANs are themselves a complete large network rather than a collection of several independent local area networks. This article describes how to work across multiple interconnected LANs with multiple remote locations. If several LANs are in the same place (for example in the same building or