我们先来回顾一下当今网络所面临的一些挑战和现在所拥有的技术,从现在网络的发展趋势来看看未来网络技术的发展趋势。现在或近期的网络是一个怎样的架构呢?通常地说,在用户端,有很多的PC,这些PC通过交换机或共享介质联接到一起,不同的子网或部门通过路由器进行联接,如果网络较大,很多的路由器会通过一个共享介质联接在一起。与外界的联接通常是通过一个路由器来进行的。今后网络的发展不仅仅是一个内部的企业网,不仅仅在于怎样与合作伙伴及客户建立一个紧密联系。很多的关键性应用在网络上“跑”,如数据库、企业资源管理、电子商务等,这些应用不能中断,要求网络非常稳定。在当前的网络上,网页越来越多,这些网页不仅来自因特网,还有很大的一部分是来自各企业的Intranet。由于Intranet的飞速发展,造成网页特别多,网络流量 Let us first review some of the challenges faced by today’s networks and the technologies we now have and look at the future trends in network technology from the current trends in the Internet. Now or near the network is a kind of architecture? Usually, the client, there are a lot of PC, the PC through the switch or shared media together, different sub-networks or departments through the router to connect, if the network is more Large, many routers are connected together through a shared medium. Connection with the outside world is usually through a router to carry out. The future development of the network is not just an internal corporate network, not just how to establish a close contact with partners and customers. A lot of the key applications in the network, “run”, such as databases, enterprise resource management, e-commerce, these applications can not be interrupted, requires a very stable network. In the current network, more and more pages, these pages not only from the Internet, but also a large part of the Intranet from various enterprises. Due to the rapid development of Intranet, resulting in a particularly large number of web pages, network traffic