基于虚拟化技术的仿真系统的设计与实现

发布时间：2018-04-16 05:35

本文选题：网络仿真 + 虚拟化仿真　；参考：《北京邮电大学》2014年硕士论文

【摘要】：计算机通信网络规模日渐庞大,新技术不断发展,其在社会生产和生活中扮演着十分重要的角色。出于业务需求,现在的大型企业多具有自己的通信网络,并且由于业务需求不同其通信网络也具有各自的特点。电力公司是国家的基础产业,担负着为国家生产和生活供电的巨大责任。目前电网公司的数据通信网发展迅速,规模日渐庞大,网络的维护、规划和升级工作面临着巨大的挑战。借助网络仿真技术,相关人员可在离线环境中进行电力通信网络的网络规划研究,网络故障演练,网络运维人员培训等工作,而不影响网络的正常运行。目前的网络仿真软件和系统中,NS-2、OPNET等软件主要实现网络的容量、性能等定量分析,用于进行相关网络协议和性能的测试,其仿真的网络节点不具有真实网络设备的命令和物理特性,很难用于网络故障演练和运维人员培训等工作。Emulab等网络仿真平台虽然有较高的仿真度,但是鉴于其实现原理,当仿真网络规模较大时需要大量的物理设备,企业单独构建此类平台经济成本较高。基于以上原因,有必要针对电力通信网络的仿真需求,设计专用的网络仿真系统。本文在详细分析系统功能需求的基础上,完成了网络仿真系统的总体设计方案。系统基于Dynamips、QEMU虚拟化模拟软件,实现了图形化的网络仿真功能,仿真节点具有真实网络设备的命令和物理特性。系统采用了分布式的系统结构,结合Dynamips、QEMU等模拟器,在支持大规模的网络仿真的同时可以减少物理设备的使用量。本文研究并实现了基于拓扑图划分的仿真节点映射策略,用于解决仿真网络到物理网络的映射问题。此外本文还实现了网络流量仿真与分析、网络故障仿真、网络配置合规性分析等功能,用于帮助使用者分析网络的结构和运行状态,评估网络的安全性。最终经过应用场景验证,本文实现的系统具有良好的交互性和较高的仿真度,达到了设计目标,可以用于电力通信网络的网络规划研究,网络故障演练,网络运维人员培训等工作。
[Abstract]:With the development of new technology, computer communication network is playing an important role in social production and life.Because of the business demand, the large enterprises now have their own communication network, and their communication network has their own characteristics because of the different business requirements.The electric power company is the basic industry of the country, shouldering the huge responsibility of supplying electricity for the national production and life.At present, the data communication network of the power grid company is developing rapidly and the scale is increasing. The maintenance, planning and upgrading of the network are facing great challenges.With the help of network simulation technology, relevant personnel can carry out network planning research, network fault drill, network operator training and so on in the off-line environment without affecting the normal operation of the network.The current network simulation software and software such as NS-2ONET mainly realize the quantitative analysis of network capacity and performance, which are used to test related network protocols and performance.The simulated network nodes do not have the command and physical characteristics of the real network equipment, so it is difficult to be used in network fault drills and network simulation platforms such as operator training. Emulab has a high degree of imitation, but in view of its implementation principle,When the scale of simulation network is large, a large number of physical equipments are needed, so it is more economical for enterprises to build such platform alone.Based on the above reasons, it is necessary to design a special network simulation system to meet the needs of power communication network simulation.Based on the detailed analysis of the functional requirements of the system, the overall design of the network simulation system is completed in this paper.The system is based on the dynamic QEMU virtualization simulation software and realizes the graphical network simulation function. The simulation node has the command and physical characteristics of the real network equipment.The system adopts the distributed system structure, and combines with the simulator such as dynamic IP / QEMU, it can reduce the use of physical devices while supporting large-scale network simulation.This paper studies and implements the mapping strategy of simulation nodes based on topological graph partitioning, which is used to solve the mapping problem between simulation network and physical network.In addition, the functions of network traffic simulation and analysis, network fault simulation and network configuration compliance analysis are implemented to help users analyze the structure and running state of the network and evaluate the security of the network.Finally, through the application scene verification, the system realized in this paper has good interactivity and high imitation, and can be used in network planning research and network fault drill of electric power communication network.Network operation and maintenance personnel training and other work.
【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】：TP391.9;TP393.01

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