基于策略DNS和HTTP Proxy的多宿主网络服务部署的研究

针对目前常用的多宿主网络服务部署方法中存在的由于ISP网络地址集的变化或DNS配置等因素会造成服务访问路由不可达的不足，提出了一种基于策略DNS与HTTP Proxy在多宿主网络中服务的部署策略，在各ISP出口安装HTTP Proxy服务器，配合策略DNS服务进行联合部署。从理论上对该策略进行了分析，并对部署方法进行了详细阐述。通过实例分析及效果测量，证实了在不改变网络拓扑、基本不增加投入的情况下，通过该策略可大幅度提高校园网或企业网信息资源服务的互联网用户访问速度和访问质量，并解决了传统方式中路由不可达的问题。

Research of multi-homed network service deployment based on strategy DNS and HTTP Proxy

In current multi homed network service deployment methods, the service access route is unreachable due to the changed ISP network addresses, DNS configuration, or other factors. Aiming at this drawback, the paper proposes a strategy of multi homed network service deployment based on strategy DNS and HTTP Proxy. The proposed strategy installs HTTP Proxy server on each ISP output and works with DNS server to perform joint deployment. The strategy is analyzed theoretically and the deployment method is described in detail. Case analysis and effect evaluation demonstrate that the proposed strategy can greatly improve the speed and quality of internet user access of the campus network and enterprise network information resource services, without changing the network topology and increasing no more investment basically. It is concluded that the strategy solve the problem that the route is unreachable in the traditional way.