基于路由器的校园网双出口的实现方法

近年来,随着Internet的普及、应用范围的拓宽,网络已成为人们日常学习、生活不可缺少的一部分.网络技术也有了飞速的发展,路由器作为网络互联的重要设备,其性能有了显著的提高,原来由软件来实现的技术如NAT(网络地址转换),现在可用硬件来实现,其工作效率大大提高.本文对使用路由器实现校园网双出口的方法进行了研究,提出了具体的实现方案.该方案涉及了NAT、策略路由、访问控制列表等与路由器有关的网络技术,解决了目前许多高校校园网因采用双出口方式带来的一系列问题诸如:公网、IP地址短缺、校内服务器采用NAT技术后无法被外部访问、CERNET定义的国际流量使用费无法控制等,并已在高校进行了实际应用.

The Solution for the Double Export- links of Campus Network Based on Router

In recent years,along with the popularization of the Internet and increasing the scope of application of the Internet,network has been the indispensable part of the people's study and life.Network techniques is developing very quickly,router as the important equipment of network,their performance have been marked improved,the technology realized by software formerly is realized by hardware now,so its working efficiency has greatly increased. The text studies the solution of the double export-links campus network.The solution involved some technology such as NAT,Policy-based routing,access lists and so on.It brings forward a material method.The method solves the problems from double export-links of many campus networks,such as: the shortage of IP address for public network,the campus network servers can't be browsed by outside network because of NAT,the fee for using the international flux of the CERNET may not be limited etc,and it have be used for some campus network.