基于静态路由的ISP负载均衡解决方案

ISP load balance solution based on static routes

传统的ISP负载均衡方法主要有2种,一是使用开启BGP协议的高端防火墙:二是使用专业负载均衡设备。本论文建立了1套新型的基于静态路由的ISP负载均衡解决方案。本文首先通过Whois协议获得ISP的AS号码,在公网BGP路由器数据库中根据这个AS号码查询属于不同ISP的全部BGP路由条目;之后将不同ISP(例如中国电信和中国联通)的路由条目导入园区网边界防火墙,使得用户访问实现负载分担和路由备份。本方案适用于大中型企业和大型居民小区园区网,相比传统的负载均衡方法,本方案能够节省大量设备投资。

There are two classic intemet load balance methods：a technical load balance hardware,or a high-end firewall equipment enabling bgp routing protocol.A new method of load balance base on static routing was practiced in this article.Based on ISP AS numbers which was obtained through Whois protocol,the author first retrieved routing entries of different ISPs by consulting databases of BGP backbone routers in public networks.Then the static routing entries of ISPs was imported into firewall equipments of campus networks,separating traffic flows and backing up routes of different ISPs.This method does apply in enterprise or relatively huge residential area networks,which conserves a lot of hardware investments comparing to classical solutions.