基于IXP2350网络处理器的NAT技术  

Implementation of NAT using network processor IXP2350

作　　者：董晓明[1] 严锦芸[1] 

机构地区：[1]华中科技大学计算机科学与技术学院

出　　处：《华中科技大学学报（自然科学版）》2008年第8期78-81,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60603075)

摘　　要：将并行网络处理器与网络地址转换NAT技术相结合,详细地描述了NAT在Intel网络处理器IXP2350上的实现方法,提出了能提高网络处理器访问性能的二级哈希表存储结构,借助硬件的优势,极大地提高了带NAT系统的网络设备转发性能.实验结果表明,NAT技术与网络处理器的结合具有良好的性能,保证了系统故障的修复能力,完全可以满足新一代1 Gbit路由器的实时性要求.How to practice network address translation （NAT） system in the board based on IXP2350 processor was described, and its important two-level hash table storage method was also analyzed. Through advantages brought by the hardware, the combination application between parallel network processor and NAT could improve the packet transferring performance of network device to a great scale. Experiment results showed that such application had a good performance and system repair ability, and could satisfy the requirement of the next generation 1 Gbit router.

关 键 词：网络地址转换 Intel网络处理器IXP2350 二级哈希表 IP地址分配 系统吞吐量 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]