CAJ | 학술논문

面向网络管理需求,将不同网络终端各自到测量点的半路径往返时延(HPRTT)定义为测量对象,提出一种较为全面的被动模式测量方法,能够在骨干网络中对各个终端的HPRTT指标进行持续测量,并通过一种自适应模型对测量采样的有效性进行判定.与现有的被动模式RTT测量技术相比,该方法的测量对象和测量结果更加具有网络管理意义,能够在不同的TCP行为模式中获得更多的测量采样并显著提高测量成功率.在Gbps级流量环境下,对大量TCP终端的测量实验结果表明,该方法具有较高的测量效率和准确性.
면향망락관리수구,장불동망락종단각자도측량점적반로경왕반시연(HPRTT)정의위측량대상,제출일충교위전면적피동모식측량방법,능구재골간망락중대각개종단적HPRTT지표진행지속측량,병통과일충자괄응모형대측량채양적유효성진행판정.여현유적피동모식RTT측량기술상비,해방법적측량대상화측량결과경가구유망락관리의의,능구재불동적TCP행위모식중획득경다적측량채양병현저제고측량성공솔.재Gbps급류량배경하,대대량TCP종단적측량실험결과표명,해방법구유교고적측량효솔화준학성.
To meet the network management requirements, this paper defined half-path round-trip time(HPRTT) as the RTT metric from a host to passive measurement point, and proposed a general passive method for continually measuring of HPRTT for different hosts in backbone network, also introduced a self-adaptive filter model to judge the validity of measurement samples. Comparing with current passive RTT estimation methods, this method could obtain more measurement samples from different TCP activity models thus observably improve the measurement success rate. Practical experiments are taken in Gbps backbone and HPRTTs are estimated for large numbers of TCP hosts, the result shows this method works properly and effectively.