分布式测量系统中优化机制研究

发布时间：2018-11-06 19:54

【摘要】：随着网络信息技术快速发展,互联网的业务和种类不断增多,网络结构也越来越复杂。如何快速有效的评测网络质量、定位和解决故障已显得越来越重要的。因此,基于主动测量的网络性能测量成为科研领域的研究热点。分布式测量系统,由探针和控制中心组成,用户通过页面下达测量任务,完成对网络质量的监控。现有的测量系统,主要利用局域网的少量探针进行测量,探测节点部署少,拓扑结构简单,测量任务局限于网络层和传输层。部署在复杂的大型网络中,系统面临节点有效部署、测量指标比较单一的问题。因此,对现有系统进行优化机制的研究有着重要的意义。本文提出了一种基于探测策略的节点部署算法,对主动测量产生的流量负载进行了优化。针对现有测量系统中测量任务种类少的情况,优化了网络测量的流程,实现了跨层多协议关联测量和故障分析功能。本文所提节点部署算法基于NS3模拟网络环境实现,跨层多协议关联测量基于Gperf测量平台进行系统实现,并在真实网络环境中进行了部署实验。结果表明,本文所述方法能够减少探针主动测量带来的额外流量,并能够将网络层和应用层的测量融合到一个测量流程中,更有效的进行故障分析。
[Abstract]:With the rapid development of network information technology, the network structure is becoming more and more complex. It has become more and more important to evaluate the network quality quickly and effectively, to locate and solve the fault. Therefore, network performance measurement based on active measurement has become a research hotspot in the field of scientific research. The distributed measurement system is composed of probe and control center. The existing measurement system mainly uses a small number of probes in the LAN to measure, the detection nodes are less deployed, the topology structure is simple, and the measurement tasks are limited to the network layer and the transmission layer. When deployed in complex large networks, the system is faced with the problem of node effective deployment and single measurement index. Therefore, it is of great significance to study the optimization mechanism of the existing system. In this paper, a node deployment algorithm based on detection strategy is proposed, and the traffic load generated by active measurement is optimized. In view of the fact that there are few kinds of measurement tasks in the existing measurement system, the flow chart of network measurement is optimized, and the functions of cross-layer multi-protocol correlation measurement and fault analysis are realized. The node deployment algorithm proposed in this paper is based on the NS3 simulation network environment, and the cross-layer multi-protocol association measurement is implemented based on the Gperf measurement platform, and the deployment experiment is carried out in the real network environment. The results show that the proposed method can reduce the extra traffic caused by active probe measurement, and integrate the measurement of network layer and application layer into a single measurement flow, so that the fault analysis can be carried out more effectively.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.06

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