The demand for networking management has been increasing alone with the continuous development of giga - bytes ethernet technology . the proposal of aaa concept set up the goal of user management in ethernet network Aaa概念的出现提出了对以太网用户管理的目标，各种宽带以太网接入认证管理技术也纷纷出现： pppoe 、 vlan + mac ip 、 webportal等。
In march 2003 , dawning launched 4000l servers , by far the topmost model of data processor in china with a computing speed of 4 , 200 giga floating point operation per second gflops . dawning 4000l was soon deployed in the area of oil exploration 二零零三年三月，曙光信息成功研制出国内最大型每秒运算为4 . 2万亿次的超级服务器曙光4000l ，并随即将产品销售至石油勘探领域。
Recently , as great progress in semiconductor technologies , the working frequency of mosfet in cmos can be up to 50ghz . thus it is possible to realize high frequency integrated - circuits in giga - hertz band by using pure cmos process 近年来随着特征尺寸的不断减少,深亚微米cmos工艺其mosfet的特征频率已经达到50ghz以上,使得利用cmos工艺实现ghz频段的高频模拟电路成为可能。
This paper mainly discuss how to realize a intrusion detection system which can work effectively in giga ethernet environment . based the current intrusion detection technic , we give a model of high - speed intrusion detection system structure and put forward the flow devision policy based the model . in this paper , we also discuss the method to improve the performance of capturing packet on the network 本文主要讨论如何实现一个能够在千兆以太网的网络环境下进行有效工作的入侵检测系统，在研究和分析当前入侵监测技术的基础上，设计了一个高速入侵检测系统的体系结构模型，同时基于该体系结构采用流分配机制，设计了对网络流量基于流的划分策略，并分析与研究在千兆以太网环境下能够提高底层捕包性能的方法。
