基于掩码匹配的校园网出口流量抽样测量研究

针对校园网出口流量抽样测量问题，给出了测量点的选择及测量环境的设计方案,实施了特定掩码与IP报文标识字段进行匹配的抽样测量。提出了从抽样后的报文中估计一定时间刻度原始流量的大小、估计原始报文长度与协议分布的方法。通过对防火墙流量信息的观测和对校园网流量信息的分析表明，抽样测量结果与实际情况相符。

Sampling Measurement Research for Traffic of Campus Network Export Based on Mask Matching

The paper gives the choice of measurement point and the design project of measurement environment aiming at the problem of sampling measurement in the campus network, and which execute the right priority match sampling measurement about special mask and identification field of IP message. It offers the way of estimating the primitive traffic at some time and the length of primitive message and the way of protocol distribution from the message Sampled. Through the observation of the fire-wall traffic information and the analysis to the traffic message of campus network, the experiment result shows that the sampling measurement result equates with the fact.