多出口校园网络体系结构的研究  

Research of the Multi-Entry Campus Network Architecture

作　　者：于家鸣[1] 朱晋宁[1] 李志兰[1] 

机构地区：[1]南京师范大学信息网络中心,江苏南京210097

出　　处：《计算机工程与科学》2006年第3期139-142,共4页Computer Engineering & Science

摘　　要：很多校园网络除了接入CERNET以外,还同时接入不同ISP运营商提供的网络,目的是除了减少访问国内收费站点和国外站点的流量费用外,还使原先比较脆弱的单一出口有了备份,不会因为一个ISP发生故障而中断校园网和因特网的连接。但是,这种多出口网络体系结构必须解决策略路由的配置问题,以及如何使用负载均衡策略使各个出口的流量得以合理分配的问题。本文以南京师范大学校园网为例,对多出口网络体系结构进行了深入的研究。Currently, besides being connected to the CERNET, many campus networks also are connected to those provided commercially by ISPs. The purpose to do so is that, not only the operation fees for visiting domestic and foreign commercial websites are reduced, but also a back-up for the network is available for the originally relatively vulnerable single-entry scheme, thereby preventing a cut-off between the campus networks and the Internet when an ISP has a technical problem. However, this type of muhi-entry network scheme must have solutions to declsion-making based routing problems, Meanwhile, this multi-entry network scheme also should be able to do load-balancing, allowing the web-traffic volume at the entry points to be reasonably distributed. Using the Nanjing Normal University＇s campus network as an example, this paper presents an in-depth research on the multi-entry network scheme.

关 键 词：多出口网络体系结构 策略路由 负载均衡策略NAT 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]