基于路径分裂的用户优先级虚拟网络映射研究

发布时间：2018-04-28 13:14

本文选题：网络虚拟化 + 虚拟网络映射　；参考：《西安电子科技大学》2014年硕士论文

【摘要】：随着网络规模的急剧扩张和各种新兴网络技术与网络业务的不断涌现以及用户对网络需求的转变,传统网络架构所面临的网络架构僵化、技术革新困难、服务质量难以保证等问题日益突出。网络虚拟化技术通过在共享的底层基础架构上并行部署多个虚拟子网，保证网络稳定性的同时加速网络技术的革新和应用，成为解决现有网络问题的一种有效途径。然而，面对虚拟网络的动态服务特性，如何实现对底层物理资源的高效管理以满足各个虚拟子网的资源需求，同时实现底层物理资源利用率最大化，成为了网络虚拟化研究的关键问题。为了解决资源高效管理问题，本文首先对网络虚拟化现有的资源管理架构研究成果进行了重点研究，并分析了这些资源管理架构存在的不足。在此基础上设计了一种多层混合式资源管理架构MHVRM，旨在提高网络资源的管理效率和可扩展性。该架构通过建立一种分层式管理和分域式控制的资源调度服务模式来实现对业务请求的灵活、高效、可扩展和智能化部署。为了解决虚拟网络映射问题，本文在分析控制转发分离架构下物理节点资源基本特征的基础上，以实现底层物理网络资源利用率最大化为目标，在控制转发分离网络构架下建立了基于路径分裂的用户优先级虚拟网络映射模型，针对不同的虚拟网络请求，设定不同的优先级，采用不同的链路映射策略来实现虚拟网络的部署。最后，本文通过VS2008仿真软件来建立仿真平台对所提出的模型和算法进行多方面指标的性能仿真和验证，证实了所提模型和算法在解决虚拟网络映射方面的高效性和优越性。
[Abstract]:With the rapid expansion of network scale, the continuous emergence of various emerging network technologies and network services and the change of users' demand for network, the traditional network architecture is faced with rigid network architecture and difficult technological innovation. The quality of service is difficult to guarantee and so on. Network virtualization technology is an effective way to solve the existing network problems by deploying multiple virtual subnets on the shared underlying infrastructure in parallel to ensure the stability of the network and accelerate the innovation and application of the network technology at the same time. However, in the face of the dynamic service characteristics of virtual network, how to efficiently manage the underlying physical resources to meet the resource requirements of each virtual subnet, and at the same time to maximize the utilization of the underlying physical resources. It has become a key problem in the research of network virtualization. In order to solve the problem of efficient resource management, this paper first focuses on the research results of the existing resource management architecture in network virtualization, and analyzes the shortcomings of these resource management frameworks. On this basis, a multi-layer hybrid resource management architecture, MHVRM, is designed to improve the efficiency and scalability of network resource management. The architecture can achieve flexible, efficient, scalable and intelligent deployment of business requests by establishing a hierarchical management and domain-controlled resource scheduling service model. In order to solve the problem of virtual network mapping, based on the analysis of the basic characteristics of physical node resources under the separate control and forwarding architecture, this paper aims at maximizing the utilization ratio of the underlying physical network resources. Based on path splitting, a user priority virtual network mapping model is established under the framework of control and forward separation network. Different priorities are set for different virtual network requests. Different link mapping strategies are used to implement the deployment of virtual networks. Finally, this paper establishes a simulation platform to simulate and verify the performance of the proposed model and algorithm through VS2008 simulation software, which proves the efficiency and superiority of the proposed model and algorithm in solving virtual network mapping.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.01

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