【摘要】：摘要：海量的IP地址是未來移動互聯網、物聯網等應用深入發(fā)展的基礎。而在我國目前IPv4地址已經嚴重不足的情況下,如何過渡到IPv6的問題就顯得更為迫切。IPv6采用128位地址格式,地址空間巨大,能夠徹底解決IPv4地址不足問題。但是由于IPv6與IPv4不兼容,因此在當前IPv4為主的網絡環(huán)境下,IPv4向IPv6的平滑過渡就成為IPv6能否成功的關鍵。不同的演進時,不同的場景需要不同應對方式。NAT64技術配合DNS64技術是網絡從雙棧向IPv6單棧過渡過程中的一種比較可行的過渡手段,可以實現IPv6單棧用戶訪問大部分業(yè)務。因此,研究NAT64技術和網絡組建部署方案是非常有必要的。 本文對IPv6過渡技術中的NAT64技術的應用背景進行了分析,并對NAT64進行了技術分析產品測試及組網研究,提出了NAT64的運營商級部署方案。 通過對現網流量統(tǒng)計分析及BRAS、SR設備承載用戶數量分析,總結得到NAT64設備承載量要求；進一步對NAT64設備測試,驗證了設備的成熟度,保證基本功能的實現,為組網測試提供支持；在實驗室采用現網設備,模擬現網結構搭建測試環(huán)境進行組網測試,首先研究雙棧情況下部署NAT64存在的繞轉問題,提出根據用戶源地址區(qū)分的規(guī)避方法,并在不同用戶操作系統(tǒng)下進行測試驗證。其次對NAT64設備在現網部署的容災備份方式進行研究,多個方向多種情況分別分析,從運維需求、CR位置、CR安全性考慮采用雙上聯組網的熱備方式,選擇主備而放棄負載分擔方式。最后根據演進的前期、后期做出應用場景分析,對于集中式旁掛IDC出口和集中式旁掛城域網CR情況進行對比,得出較為完善的組網及部署方案。
[Abstract]:Absrtact: massive IP address is the foundation of the future mobile Internet, Internet of things and other applications. However, the problem of how to transition to IPv6 becomes more urgent when the IPv4 address in our country is already seriously inadequate. The IPv6 adopts 128-bit address format, and the address space is huge, which can solve the problem of insufficient IPv4 address completely. However, because IPv6 and IPv4 are not compatible, the smooth transition from IPv4 to IPv6 is the key to the success of IPv6 in the current IPv4 based network environment. NAT64 technology combined with DNS64 technology is a feasible method for network transition from double stacks to IPv6 single stacks, which can realize the access of most services by IPv6 single stack users. Therefore, it is necessary to study the NAT64 technology and network component deployment scheme. In this paper, the application background of NAT64 technology in IPv6 transition technology is analyzed, and the technical analysis product testing and networking research of NAT64 are carried out, and the deployment scheme of NAT64 at operator level is put forward. Through statistical analysis of current network flow and analysis of the number of users carrying BRAS,SR equipment, the requirements of carrying capacity of NAT64 equipment are summarized. Further test of NAT64 equipment, verify the maturity of the equipment, ensure the realization of basic functions, provide support for networking testing; Using the existing network equipment in the laboratory, simulating the test environment of the existing network structure to set up the network test. Firstly, the problem of deploying NAT64 in the case of double stacks is studied, and the method of circumventing according to the user source address is put forward. Test and verify in different user operating system. Secondly, the disaster recovery backup mode of NAT64 equipment deployed in the current network is studied, and several directions and many situations are analyzed separately. Considering the operation and maintenance requirements, CR location and CR security, the hot standby mode of dual-connected network is considered. Choose the master and give up the load sharing method. Finally, based on the analysis of the application scene in the early stage and the later stage of evolution, the paper compares the situation of centralized side hanging IDC exit and centralized side hanging man CR, and obtains a more perfect network and deployment scheme.
【學位授予單位】：北京交通大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP393.03

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