一种新的高性能VPN系统的模型分析  

High-Performance VPN Model Analysis

作　　者：梅松[1] 李之棠[1] 

机构地区：[1]华中科技大学计算机学院,湖北武汉430074

出　　处：《小型微型计算机系统》2006年第5期793-797,共5页Journal of Chinese Computer Systems

基　　金：国家科技部创新基金项目[2003(375)]资助

摘　　要：首先针对VPN系统性能的瓶颈讨论了当前常规的性能提升的方法.接着在对VPN体系进行剖析的基础上,提出了一种新的基于流水线和多卡并行处理(Pipeline、Multi-cardsParallel)的模型,并分别对流水线模型和多卡并行处理模型进行了分析.为了对PMP模型进行验证,文章给出了改造后的FreeSWAN软件结构,并提供了性能测试数据作为比较.最后对新系统的性能进行了理论分析,推导出了系统性能和加密卡的速度、并行加密卡的个数以及性能损失率之间的数学关系.This paper first discussed the classic methods to do with the problem of the performance bottleneck of the Virtual Private Network（VPN）. And based on the analysis of VPN architecture,the new model of pipeline and multi-cards parallel proeess was exposed . Then the pipeline model and multi-cards parallel model were analysed respectively. The soft structure of FreeSWAN improved and the performance test data were presented in order to validate this model. Finally, the performance of the new system was analysed detailedly, and then the mathematic relation of performance.speed of enerypt algorithm.the number of enerypt cards and losing rate was achieved.

关 键 词：VPN性能 流水线 并行处理 FREES/WAN 

分 类 号：TP303[自动化与计算机技术—计算机系统结构]