IP协议分析仪的设计与实现

传统的基于SNMP协议流量监测工具有MRTG等,这些工具提供了网络流量的大小和变化的幅度;为了更好地了解互联网流量的本质,目前网络管理的研究集中在“网络流”压技术上。而Cisco的NetFlow服务提供了基于的“网络流”分析的方法。根据中国科技网在实际网络流量管理中的需求,本文介绍了“网络流”模型,分析了Cisco路由器NetFlow技术原理,根据NetFlow数据在流量和安全中的应用,引入了协议分析仪的技术,提出相关的设计和实现方案。

Design and Implementation of IP Protocol Analyzer

Traditional SNMP-based traffic monitoring tools such as mrtg only provide information about levels and changes in traffic volume;presently the researchers of the network management focus on the flow profiling in order to better understand the nature of Internet traffic.The Cisco's NetFlow services provides the measurement base of flow-based network analysis.Based on the requirement of practical network traffic management in Chinese Science and Technology Network,This paper describes the notion of flow profiling,analyses Cisco's NetFlow technology principle.Further more,based on the traffic and security for Cisco NetFlow data,the paper introduces the protocol analyzer technique and raises the correlative design and implement schemes.