IP城域網(wǎng)MPLS-VPN組網(wǎng)的優(yōu)化方法研究
[Abstract]:With the advent of the Internet era, the Internet industry has explosive growth in the global scope, while enterprises have set up their own virtual private network. In the IP metropolitan area network, more and more information is distributed between the branches of the enterprise and the business partners. With the development of business, the requirement of the MPLS VPN network in the IP metropolitan area network is becoming higher and higher. How to solve the expansibility bottleneck of the traditional MPLS VPN network and how to guarantee the communication quality of the network become the key problems that need to be paid attention to at present. Therefore, it is of great value and practical significance to put forward a reasonable method of MPLS VPN networking optimization in IP metropolitan area network. First of all, this paper introduces the relevant principles of MPLS VPN in detail, respectively from the principle of MPLS technology and the principle of MPLS VPN in metropolitan area network, and further analyzes the advantages and disadvantages of traditional MPLS VPN network architecture and cross-domain strategy. Some problems that need to be improved in MPLSVPN network are put forward, and the theoretical basis for the optimization research below is also provided. Secondly, aiming at the defects of the traditional MPLSVPN network architecture, a network architecture optimization scheme based on hierarchical PE technology is proposed, which aims to separate the control routing capability of the traditional MPLS VPN from the data forwarding capability as far as possible in logic functions. To achieve the goal of hierarchical network architecture, and enhance the scalability of the network; at the same time, this scheme also optimized the equivalent multi-path weight algorithm to improve the overall security and transmission quality of the network. Comparing the delay, jitter and packet loss rate of VPN load IP packet before and after optimization, it is proved that the optimized MPLS VPN network architecture based on layered PE technology is superior to the traditional MPLS VPN network architecture. Then, aiming at the defects of traditional MPLS VPN cross-domain policy, a cross-domain policy optimization scheme based on load-sharing technology is proposed. This optimization distributes all VPNV4 routes declared by cross-domain devices to each local PE device. Cross-domain devices do not need to save or declare any VPNV4 routing, so this scheme can effectively reduce the cross-domain device load, and then simulate the optimized cross-domain policy on the ENSP simulation platform. It is proved that the optimization strategy is feasible on the network level by the method of PING test data packet and wireshark software grasping data packet, and the CPU utilization ratio of the equipment in the cross-domain policy before and after optimization is compared. It is further proved that the cross-domain strategy based on load-sharing technology can reduce the load of cross-domain devices and achieve the purpose of improving network security. Finally, the paper mainly introduces the "Jiangxi Telecom IP man MPLS VPN network optimization design project", and expounds the optimization design scheme of the project in detail, and explains the performance of the related equipment in the project. The method of parameter planning and the scheme of QOS deployment, and then through the relevant tests, it is proved that the MPLS VPN network is much better than the optimization in the page response time, file download speed and other network perception index after this optimization.
【學(xué)位授予單位】:南昌航空大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TP393.1
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