NAT64设备性能及组网部署方案研究

发布时间：2019-01-10 11:11

【摘要】：摘要：海量的IP地址是未来移动互联网、物联网等应用深入发展的基础。而在我国目前IPv4地址已经严重不足的情况下,如何过渡到IPv6的问题就显得更为迫切。IPv6采用128位地址格式,地址空间巨大,能够彻底解决IPv4地址不足问题。但是由于IPv6与IPv4不兼容,因此在当前IPv4为主的网络环境下,IPv4向IPv6的平滑过渡就成为IPv6能否成功的关键。不同的演进时,不同的场景需要不同应对方式。NAT64技术配合DNS64技术是网络从双栈向IPv6单栈过渡过程中的一种比较可行的过渡手段,可以实现IPv6单栈用户访问大部分业务。因此,研究NAT64技术和网络组建部署方案是非常有必要的。本文对IPv6过渡技术中的NAT64技术的应用背景进行了分析,并对NAT64进行了技术分析产品测试及组网研究,提出了NAT64的运营商级部署方案。通过对现网流量统计分析及BRAS、SR设备承载用户数量分析,总结得到NAT64设备承载量要求；进一步对NAT64设备测试,验证了设备的成熟度,保证基本功能的实现,为组网测试提供支持；在实验室采用现网设备,模拟现网结构搭建测试环境进行组网测试,首先研究双栈情况下部署NAT64存在的绕转问题,提出根据用户源地址区分的规避方法,并在不同用户操作系统下进行测试验证。其次对NAT64设备在现网部署的容灾备份方式进行研究,多个方向多种情况分别分析,从运维需求、CR位置、CR安全性考虑采用双上联组网的热备方式,选择主备而放弃负载分担方式。最后根据演进的前期、后期做出应用场景分析,对于集中式旁挂IDC出口和集中式旁挂城域网CR情况进行对比,得出较为完善的组网及部署方案。
[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.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.03

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