發(fā)布時(shí)間：2018-04-16 05:35

  本文選題：網(wǎng)絡(luò)仿真 + 虛擬化仿真��； 參考：《北京郵電大學(xué)》2014年碩士論文

【摘要】：計(jì)算機(jī)通信網(wǎng)絡(luò)規(guī)模日漸龐大,新技術(shù)不斷發(fā)展,其在社會(huì)生產(chǎn)和生活中扮演著十分重要的角色。出于業(yè)務(wù)需求,現(xiàn)在的大型企業(yè)多具有自己的通信網(wǎng)絡(luò),并且由于業(yè)務(wù)需求不同其通信網(wǎng)絡(luò)也具有各自的特點(diǎn)。電力公司是國(guó)家的基礎(chǔ)產(chǎn)業(yè),擔(dān)負(fù)著為國(guó)家生產(chǎn)和生活供電的巨大責(zé)任。目前電網(wǎng)公司的數(shù)據(jù)通信網(wǎng)發(fā)展迅速,規(guī)模日漸龐大,網(wǎng)絡(luò)的維護(hù)、規(guī)劃和升級(jí)工作面臨著巨大的挑戰(zhàn)。借助網(wǎng)絡(luò)仿真技術(shù),相關(guān)人員可在離線環(huán)境中進(jìn)行電力通信網(wǎng)絡(luò)的網(wǎng)絡(luò)規(guī)劃研究,網(wǎng)絡(luò)故障演練,網(wǎng)絡(luò)運(yùn)維人員培訓(xùn)等工作,而不影響網(wǎng)絡(luò)的正常運(yùn)行。 目前的網(wǎng)絡(luò)仿真軟件和系統(tǒng)中,NS-2、OPNET等軟件主要實(shí)現(xiàn)網(wǎng)絡(luò)的容量、性能等定量分析,用于進(jìn)行相關(guān)網(wǎng)絡(luò)協(xié)議和性能的測(cè)試,其仿真的網(wǎng)絡(luò)節(jié)點(diǎn)不具有真實(shí)網(wǎng)絡(luò)設(shè)備的命令和物理特性,很難用于網(wǎng)絡(luò)故障演練和運(yùn)維人員培訓(xùn)等工作。Emulab等網(wǎng)絡(luò)仿真平臺(tái)雖然有較高的仿真度,但是鑒于其實(shí)現(xiàn)原理,當(dāng)仿真網(wǎng)絡(luò)規(guī)模較大時(shí)需要大量的物理設(shè)備,企業(yè)單獨(dú)構(gòu)建此類(lèi)平臺(tái)經(jīng)濟(jì)成本較高�；谝陨显�,有必要針對(duì)電力通信網(wǎng)絡(luò)的仿真需求,設(shè)計(jì)專(zhuān)用的網(wǎng)絡(luò)仿真系統(tǒng)。 本文在詳細(xì)分析系統(tǒng)功能需求的基礎(chǔ)上,完成了網(wǎng)絡(luò)仿真系統(tǒng)的總體設(shè)計(jì)方案。系統(tǒng)基于Dynamips、QEMU虛擬化模擬軟件,實(shí)現(xiàn)了圖形化的網(wǎng)絡(luò)仿真功能,仿真節(jié)點(diǎn)具有真實(shí)網(wǎng)絡(luò)設(shè)備的命令和物理特性。系統(tǒng)采用了分布式的系統(tǒng)結(jié)構(gòu),結(jié)合Dynamips、QEMU等模擬器,在支持大規(guī)模的網(wǎng)絡(luò)仿真的同時(shí)可以減少物理設(shè)備的使用量。本文研究并實(shí)現(xiàn)了基于拓?fù)鋱D劃分的仿真節(jié)點(diǎn)映射策略,用于解決仿真網(wǎng)絡(luò)到物理網(wǎng)絡(luò)的映射問(wèn)題。此外本文還實(shí)現(xiàn)了網(wǎng)絡(luò)流量仿真與分析、網(wǎng)絡(luò)故障仿真、網(wǎng)絡(luò)配置合規(guī)性分析等功能,用于幫助使用者分析網(wǎng)絡(luò)的結(jié)構(gòu)和運(yùn)行狀態(tài),評(píng)估網(wǎng)絡(luò)的安全性。最終經(jīng)過(guò)應(yīng)用場(chǎng)景驗(yàn)證,本文實(shí)現(xiàn)的系統(tǒng)具有良好的交互性和較高的仿真度,達(dá)到了設(shè)計(jì)目標(biāo),可以用于電力通信網(wǎng)絡(luò)的網(wǎng)絡(luò)規(guī)劃研究,網(wǎng)絡(luò)故障演練,網(wǎng)絡(luò)運(yùn)維人員培訓(xùn)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.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TP391.9;TP393.01

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本文編號(hào)：1757549