【作者】 王柱；

【导师】 孙学军；

【作者基本信息】 天津大学 ， 计算机应用技术， 2006， 硕士

【摘要】 近年来,随着WWW的巨大成功和日益普及、企业事业单位信息化进程的加快,Internet的规模扩张和流量增长带来了诸多问题。传统的IP网络和后来出现的ATM技术,在许多方面,例如传送的可靠性、带宽、时延、QoS/CoS等,已经很难满足用户对VPN的需求。那么,如何解决传统IP网络的固有缺陷,在众多新方案中,最具代表性的就是MPLS VPN技术。本文利用MPLS VPN的理论知识,设计与规划了基于IP城域网的MPLS VPN实施方案,包括构建MPLS域、路由协议的选择和配置方法、网络备份和流量分担、IP地址规划和VLAN规划等。然后,从多个角度分析了用户原有专网的缺点,根据用户的实际组网需求,使用用户原有设备作为CE设备,接入IP城域网PE设备,设计基于IP城域网的MPLS VPN模型并予以实施。最后,通过具体的网络测试,包括网络连通性测试、查看P和PE设备的路由表、查看PE设备的BGP路由信息、LSP隧道测试、路由跟踪测试、丢包率测试、流量测试、短期和长期误码率测试,从理论上比较分析了传统专网和基于IP城域网的MPLS VPN的各项网络性能,包括网络的安全性、扩展性、拓扑结构、可管理性和可维护性、延迟和带宽、可靠性。通过本文的研究,证明了基于IP城域网的MPLS VPN不但具有和传统专网类似的安全性,而且在网络的可靠性、速度和带宽、可扩展性、可维护性和可管理性等方面优于传统专网的特点,并能够解决私网IP地址重叠的问题,组网成本更低。更多还原

【Abstract】 In recent years, with the WWW huge success and its increasingly spread and the quickening in informationization of business and enterprise unit, the Internet scale expansion and the current capacity growth has brought many questions. The traditional IP network and the later ATM technology, in many aspects,for example,transmission reliability, band width, latency, Qos/Cos,etc. are already difficult to meet with user’s VPN demand. Then, with regard to how to solve the inherent flaw in traditional IP network, the most representative among multitudinous new plans is MPLS VPN technology.The article uses MPLS VPN theory knowledge, deals with the design based on MPLS VPN implementation plan of IP’s MAN network, including constructing MPLS Domain, the selection and the configuration method of the route protocol, network back-ups and flow share, the planning of IP address and VLAN, etc of IP’s MAN. Then, from many angles, analyzes the disadvantages of original private network and according to the actual network demand of users, uses user’s original equipment as CE equipment, connects IP’s MAN PE equipment. Design and carry out the MPLS VPN model based on IP’s MAN. Finally, through specific internet test, including internet unobstructed test, checking P and PE equipment routing table, checking PE equipment BGP routing information, LSP tunnel test, route-following test, losing-packet rate test, from theory, it compares and analyzes traditional private network and every network performance of MPLS VPN based on IP’s MAN, including safety, expansion, topo structure, manageability and maintainability, delay and bandwidth and reliability.Through the research of the article approves the MPLS VPN safety based on IP’s MAN similar to the traditional private network and some characteristics superior to the traditional private network such as in aspect of network reliability, speed and band width, extendability, maintainability and manageability, etc and is able to solve the problem of private network IP address overlapping, the cost of network is lower.更多还原