【作者】 朱红；

【导师】 张思东；

【作者基本信息】 北京交通大学 ， 通信与信息系统， 2007， 硕士

【摘要】 随着互联网技术的飞速发展以及社会经济的不断进步,VPN技术以其在网络灵活性、经济性、可扩展性和安全性等方面独有的优势赢得了越来越多企业的青睐。而BGP/MPLS VPN技术作为最具发展潜力的VPN组网技术之一,受到了运营商和设备提供商的广泛重视,已成为当前企业专用网络的一个发展热点。结合移动网络未来的发展趋势和现有理论的不足可以发现,研究基于BGP/MPLS VPN的移动性问题将有助于满足企业对具有安全性的移动应用如远程移动办公、移动内部会议等一系列新业务的需求,使得VPN的实现方式更为多样化,功能更加丰富,有利于VPN技术在新的网络环境中更加广泛地推广与应用,其解决方案将具有重要的研究意义和现实意义。本文的工作是与国内通信企业合作研发项目“IPv6组播、安全和VPN技术研究”的一部分,主要研究BGP/MPLS VPN的移动性支持问题。本论文从BGP/MPLS VPN的基本理论出发,参考IETF在MIPv4、MIPv6和NEMO等技术的最新进展和未来研究方向,确定了基本研究思路和论文的创新点,并在此基础上对BGP/MPLS VPN进行了相应的扩展。通过对BGP/MPLS VPN在IPv4、IPv6以及v4-v6混合网络环境中移动性问题的深入研究,着重分析了BGP/MPLS VPN移动性理论中可能存在的各种不同的应用场景,其中包括主机移动和站点移动两大类,并在此基础上初步设计了相应的移动性支持解决方案。对由MPLS骨干网络平台和用户站点组成的网络结构中相关VPN设备以及数据包传输流程进行了相应地改进,包括在PE路由器的VRF中增加新的VPN-IP转交地址项并与新的MPLS标签项的绑定,使得BGP/MPLS VPN与移动网络实现了有机结合。更多还原

【Abstract】 With the development of network technologies and the advancement of economy, more and more enterprises attach importance to the VPN technique, which has particular advantages in the aspects of network flexibility, extensibility, security and economical efficiency. As one of the most potential VPN technologies, BGP/MPLS VPN gets more and more recognitions by SP, and has been a hotspot in the domain of private network. Combine with the development trend of mobile network and the fall short of its actual theory we can find that, the research of BGP/MPLS VPN mobility will helpful to offer the requirement to a series of new secure mobile services, such as remote mobile business, and mobile interior conferences, and it will make the method of VPN function and implementation more diversify then before, and will make for the VPN technology have an extensive application in the future network environment. The approach scheme will have an important disquisitive and actual value.The job in this thesis is one part of the“research of IPv6 multicast, security and VPN”project which is developed by our university cooperated with one of a domestic communication enterprises. This thesis purpose is researching the BGP/MPLS VPN mobility, and it starts at the foundational BGP/MPLS VPN theories. Taking IETF’s advanced achievement in MIPv4, MIPv6 and NEMO as reference, the thesis confirms its research routes and innovative points. It goes into the matter of BGP/MPLS VPN mobility; analyses and designs a complete settlement in all kinds of different BGP/MPLS VPN mobility scenarios, mainly including host mobility and site mobility. It details the relevant extension to BGP/MPLS VPN, and improves the related VPN equipments and the processes of data packet transmission, which involves adding and binding CoA and a new MPLS label. To sum up, this settlement scheme makes BGP/MPLS VPN combine with the mobile network.更多还原