Research And Implementation Of Network Measurement Model Based On Netflow Technology

With the popularity of the network, network applications has become increasingly diverse,the rapid growth in data traffic, resulting in increasing the difficulty of network measurementand management, emerge in an endless stream of new business, have had a great impact onnetwork performance, virus，attacks, malware network intrusion has become a big risk,therefore need a overall solution to measure the network and identify the data services,abnormal flows.This paper presents a new pattern, In this pattern the network monitoring system based onNetFlow technology and deep packet analysis are combined. First, we analysis the currentresearch status of network measurement, and we developed network monitoring tools basedon the NetFlow technology, due to the limitations of NetFlow technical in data identification,In this paper, we combine the well-known port, the IP addresses of commonly usedapplications server, feature code of application to identify the variety traffic, and the algorithmhas been implemented.Aggregation and storage is one of the important contents in the implementation ofnetwork monitoring tools. We use the Hash table for polymerization of triad, storagemechanism through the establishment of the original stream repository and polymersrepository.Finally，We measure the simulation environment built in the laboratory through theNetFlow monitoring tools, identify the traffic of several common applications in a labenvironment at the same time.