本文着重描述了基于CDMA 1 X VPDN网络具体连接建立的步骤和实际应用。提出具体的解决IMSI认证和地址绑定的实现方案，提供了

实验环境拓扑。并给出在试验环境下路由器的基本配置并对主要的配置加以说明。其中lMSI认证实现的关键是利用RAD I US服务器。试验环境使用的软件是FreeRadius免费软件，正式组网时可利用企业现有的RAD I US服务器或安装免费的RAD I US软件，从而低成本解决了该问题。上述解决方案经过实验网测试。系统运行稳定。证明有效可行。-This article focuses on the network based on CDMA 1 X VPDN connection is established specific steps and practical application. IMSI propose specific solutions to achieve certification and address of the binding solution, provides an experimental environment topology. Given in the test environment and the basic configuration of the router' s configuration to illustrate the main. Which is the key to achieving lMSI certified by RAD I US server. The software test environment is FreeRadius using free software can be used when the official network of existing RAD I US enterprise server or install the free RAD I US software, low-cost solutions to the problem. After the experimental network testing solutions. System is stable. Proved effective and feasible.