基于两层结构的网络流量建模与仿真

A Double Layer Modelfor Traffic Simulation

针对现有流量仿真模型适用范围小、业务特征仿真能力弱的问题,分析了网络业务流量组成特点,提出一种两层结构的网络业务流量建模方法。模型包含流量层和业务层,分别仿真流量的一般性特征和各自的业务特征。业务层结合业务的协议规定和报文组成,利用泊松等模型产生符合交互行为特点的业务数据流。流量层利用重尾模型对业务数据进行处理,以产生符合自相似等特征的分组数据流。实验结果显示,模型仿真产生的流量数据能够同时具备实际网络流量的业务特征和一般性特征。

A novel double layer traffic model is proposed to solve the problem that traffic simulated by common models don’t correspond to real network traffic .This model consists of two sub‐models :traffic model and sequence model .Traffic model is used to generate packets and sessions according to network protocol .Sequence model is used to ensure that packets sequence has self‐similarity and other characteristic .The experimental results have verified that the traffic from the model have the properties of general network traffic ,also with its protocol characteristic .