基于网络测量的互联网路由优化系统的设计与实现

发布时间：2018-03-23 20:32

本文选题：网络测量　切入点：路由优化　出处：《北京邮电大学》2014年硕士论文

【摘要】：随着Internet内部结构日益复杂化,用户对网络服务质量(QoS)的要求也在不断提高,网络业务的多样化对网络的传输性能提出了更高的要求,计算机网络的高效性、稳定性和可靠性等方面也越来越成为人们关注的焦点问题,因此近年来,网络测量与路由优化在IP网络中起着举足轻重的地位。然而,目前针对这两个方面的研究大多是两个部分单独的应用研究,并没能很好地把两部分结合起来,随着网络的不断发展,特定系统的缺陷便逐渐凸显出来。单一的网络测量系统具有如下几个缺点：1)只能简单的对网络进行性能测量,并不能根据实际的网络情况和问题有针对性地提出解决的方案,缺乏对问题的具体化；2)很难有一套测量系统适用于不用的测量要求,可扩展性和可操作性差。而单一的路由优化系统也存在着以下缺点：1)路由优化缺乏针对性,不能够真实反映网络当前的性能状况；2)很多路由优化都需要进行基于路由器的测量,需要路由器的协作,并且会带来其他一些问题,所以很难在实际中部署实施。本文着重将网络测量与路由优化两部分结合起来,设计并实现了一种基于网络测量的互联网路由优化系统。通过结合这两部分,可以解决上述网络测量针对性差、路由优化时效性差等问题。系统主要具备以下功能：1)该系统首先对当前网络性能指标进行测量,获得所需的网络性能参数；2)利用路由优化算法分析测量参数,得到一条端到端的最优路径；3)系统中加入了异常数据处理机制,可以对网络测量得到的数据进行分析,查看是否有异常数据存在,保证网络测量所得数据的准确性；4)系统中加入了数据呈现与控制管理机制,能够将测量所得的网络性能参数呈现给网络管理员,让网络管理员能够及时了解当前网络状态,处理网络问题。最后在实验室网络环境下对系统进行了功能性能测试,测试结果表明,本文设计的基于网络测量的路由优化系统能够准确测量网络性能参数并分析得到在当前网络情况下最优的的路由优化结果,并且当发送测量数据包个数为10的情况下,系统处理所需的时间仅占总任务时间的1.4%。除此之外,系统中的异常数据处理机制还能够提升测量样本的准确性,系统整体性能良好。
[Abstract]:As the internal structure of Internet becomes more and more complicated, the requirement of users to the quality of service (QoS) of the network is also increasing. The diversification of network services puts forward higher requirements for the transmission performance of the network, and the high efficiency of the computer network. In recent years, network measurement and routing optimization play an important role in IP networks. However, at present, most of the research on these two aspects is a separate application study, which does not combine the two parts well, and with the continuous development of the network, The shortcomings of a specific system are gradually becoming apparent. A single network measurement system has the following shortcomings: 1) it can only simply measure the performance of the network, and it cannot put forward a solution to the problem according to the actual network situation and problems. It is very difficult to have a set of measurement system suitable for the measurement requirement that need not be used, and the expansibility and maneuverability of the single route optimization system are poor, and the single route optimization system also has the following shortcomings: 1) the route optimization lacks pertinence. Many routing optimizations require router-based measurements, router collaboration, and other problems. Therefore, it is very difficult to deploy in practice. This paper focuses on the combination of network measurement and routing optimization, and designs and implements an Internet routing optimization system based on network measurement. The system can solve the problems of poor pertinence of network measurement and poor timeliness of route optimization, etc. The system mainly has the following function: 1) the system first measures the current network performance index. To obtain the required network performance parameters, we use the route optimization algorithm to analyze the measurement parameters, and get an end-to-end optimal path to the system. The abnormal data processing mechanism is added to the system, which can be used to analyze the data obtained from the network measurement. Check to see if there are abnormal data, ensure the accuracy of the data measured in the system. Add the data presentation and control management mechanism to show the measured network performance parameters to the network administrator. So that network administrators can understand the current network status and deal with network problems. Finally, the functional performance of the system is tested in the laboratory network environment, and the test results show that, The routing optimization system based on network measurement designed in this paper can accurately measure the network performance parameters and obtain the optimal route optimization results under the current network conditions, and when the number of measurement packets is 10, The processing time of the system is only 1.4% of the total task time. In addition, the abnormal data processing mechanism in the system can improve the accuracy of the measurement samples, and the overall performance of the system is good.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.06

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