【摘要】：基于嵌入式WEB的反向登錄技術的遠程網絡實訓環(huán)境與網絡的實際建設有一定差異性，就是網絡線路的復雜性及協(xié)議的多樣性。為了能夠給師生提供最好的、真實的實驗環(huán)境，，那就要求網絡實驗室盡可能的去模擬這些復雜的環(huán)境。這就要求在網絡實驗室的構建中，既能夠模擬寬帶數(shù)據城域網及大型園區(qū)網的組網方式和業(yè)務思路，又能構建多種類型的局域網和廣域網。通過本人多年的教學研究，發(fā)現(xiàn)在網絡專業(yè)的課程之初，實訓室里的網絡設備本身都具有初始配置，但學生在做完實驗后，（如IP、網關等）初始配置的參數(shù)都發(fā)生了變化，給以后的課程帶來不便。為了保證教學質量，因此需要恢復網絡設備的初始信息。對于一個大的網絡實驗室而言，必須能夠提供一種簡便的方式能夠同時管理多臺設備。 針對以上問題本研究將遠程試驗系統(tǒng)引入河北軟件職業(yè)技術學院網絡技術實訓室建設的真實項目，首先通過思科cisco25系列路由器實現(xiàn)反向telnet構建終端服務器，利用H3C路由器和交換機等多臺真實設備，應用業(yè)界內較成熟的嵌入在多端口路由器內的應用程序，以較小的投入，巧妙地呈現(xiàn)出搭建遠程網絡實訓環(huán)境的全過程,實現(xiàn)遠程試驗系統(tǒng)的體系架構；其次給出了某高校的體系結構圖,植入嵌入式DMC軟件平臺系統(tǒng)，并根據網絡實驗室的基本要求和管理方式對其進行了簡單的功能描述和線路分析,詳細闡述了實驗室的解決方案,總結了系統(tǒng)的特點和優(yōu)勢。在實踐過程中，本文作者參考行業(yè)著名思科公司具有代表性的帶外登錄技術，深入挖掘H3C網絡設備功能，巧妙的應用了業(yè)界較為成熟的H3C嵌入式通用路由平臺VRP所特有的系統(tǒng)擴展試驗設備管理系統(tǒng)DMC，底層采取反向telnet技術實現(xiàn)了對串行RS232通信端口的驅動，上層實現(xiàn)了與用戶的web交互，采用圖形界面完成對網絡實驗拓撲的操控，解決了原實訓室應用過程中插拔設備的弊病，既保護了設備，又延長了設備使用壽命。同時，成功搭建了遠程網絡教學平臺，實現(xiàn)了遠程網絡教學實訓的擴展功能。
文內圖片：
圖片說明：NEMS系統(tǒng)架構示意圖
[Abstract]:There is a certain difference between the remote network training environment based on embedded WEB reverse login technology and the actual construction of the network, that is, the complexity of the network line and the diversity of the protocols. In order to provide the best and real experimental environment for teachers and students, the network laboratory is required to simulate these complex environments as much as possible. This requires that in the construction of network laboratory, it can not only simulate the networking mode and business ideas of broadband data metropolitan area network and large campus network, but also construct various types of local area network and wide area network. Through my many years of teaching and research, it is found that at the beginning of the course of network major, the network equipment in the training room has its own initial configuration, but after the experiment, the parameters of the initial configuration (such as IP, gateway, etc.) have changed, which brings inconvenience to the future courses. In order to ensure the teaching quality, it is necessary to restore the initial information of the network equipment. For a large network laboratory, it must be able to provide an easy way to manage multiple devices at the same time. In order to solve the above problems, this study introduces the remote test system into the real project of the network technology training room of Hebei Software Vocational and Technical College. Firstly, the reverse telnet is realized through the Cisco cisco25 series router to construct the terminal server, and several real devices, such as H3C routers and switches, are used to apply the more mature application programs embedded in the multi-port router in the industry with less investment. The whole process of building remote network training environment is skillfully presented, and the architecture of remote test system is realized. Secondly, the architecture diagram of a university is given, and the embedded DMC software platform system is implanted. according to the basic requirements and management mode of the network laboratory, the simple function description and circuit analysis are carried out, the solution of the laboratory is expounded in detail, and the characteristics and advantages of the system are summarized. In the process of practice, referring to the representative out-of-band login technology of famous Cisco company in the industry, the author deeply excavates the functions of H3C network equipment, and skillfully applies the system extension test equipment management system DMC, which is unique to the industry H3C embedded general routing platform VRP, to realize the driver of serial RS232 communication port by adopting reverse telnet technology in the bottom layer, and realizes the web interaction with users in the upper layer. The graphical interface is used to complete the control of the network experiment topology, which solves the disadvantages of inserting and pulling the equipment in the application process of the original training room, which not only protects the equipment, but also prolongs the service life of the equipment. At the same time, the remote network teaching platform is successfully built, and the expansion function of distance network teaching training is realized.
【學位授予單位】：河北大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP393.05

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