虚拟网络映射在SDN北向接口的设计与实现

发布时间：2018-05-02 18:05

本文选题：SDN + ONOS　；参考：《电子科技大学》2017年硕士论文

【摘要】：随着互联网的快速发展,各种新业务的出现,如三网融合,云计算,大数据等,传统网络架构的“僵化”问题日益突出,越来越不能满足当前互联网业务的需要。而软件定义网络SDN和网络虚拟化技术能够有效解决这个问题。SDN的思想是将控制平面和数据平面相分离,各自独立发展。网络虚拟化是将底层物理网络资源抽象,使得同一个物理网络之上可以部署多个虚拟网络,这些虚拟网络相互独立,可以各自部署不同的网络协议和网络服务。SDN能够有效解决网络架构“僵化”问题,网络虚拟化技术能够更加有效的利用网络资源,使得网络新服务的部署和运维更加方便。SDN将物理网络资源抽象、池化的概念与网络虚拟化技术集中控制、软件应用控制整个虚拟网络相吻合,在SDN网络中更加容易实现网络虚拟化,而SDN最适合的领域是数据中心中的网络虚拟化应用,所以将网络虚拟化和SDN相结合能够更好的服务于层出不穷的网络服务。ONOS是当下最流行的SDN控制器之一,也是一款真正站在运营商的角度来设计的一款控制器,本文研究的平台基础正是ONOS。ONOS在后续的发布版本中支持网络虚拟化技术也是一个趋势。本文就网络虚拟化映射在SDN中的实现问题作为研究方向,主要研究了以下两方面的内容:(1)结合虚拟网络映射算法的研究现状,在充分分析了现有算法的优缺点之后,在节点映射的过程中将节点局部区域的可用拓扑资源情况考虑在内,提出了区域拓扑感知的虚拟网络映射算法,有效提高了虚拟网络映射请求的接收率以及底层物理网络的平均收益。(2)深入研究ONOS的分布式性能以及ONOS的整体结构,在此基础之上,在ONOS中设计并实现了一个虚拟网络映射系统,在映射系统中实现区域拓扑感知的虚拟网络映射算法,完成了ONOS支持网络虚拟化技术的重要环节,并考虑到了后续完善扩展成一个完整的网络虚拟化系统。并通过接口测试,该虚拟化映射系统能够有效的响应虚拟网络映射请求。
[Abstract]:With the rapid development of the Internet, the emergence of various new services, such as the convergence of three networks, cloud computing, big data and so on, the traditional network architecture of the "rigid" problem is increasingly prominent, more and more can not meet the needs of the current Internet business. The idea of software defined network SDN and network virtualization is to separate the control plane from the data plane and develop independently. Network virtualization is the abstraction of the underlying physical network resources so that multiple virtual networks can be deployed on the same physical network, which are independent of each other. It is possible to deploy different network protocols and network services. SDN can effectively solve the problem of "rigidity" of network architecture, and network virtualization technology can make more effective use of network resources. It makes the deployment and operation of new network services more convenient. SDN abstracts the physical network resources, pools the concept of network virtualization technology centralized control, software application control of the entire virtual network. Network virtualization is easier in SDN networks, and the most suitable area for SDN is network virtualization applications in data centers. Therefore, the combination of network virtualization and SDN can better serve the endless network services. ONOS is one of the most popular SDN controllers, and it is also a controller designed from the point of view of the operators. The platform foundation of this paper is that ONOS.ONOS supports network virtualization technology in subsequent releases. In this paper, the implementation of network virtualization mapping in SDN as a research direction, mainly studied the following two aspects of the content: 1) combined with the status quo of virtual network mapping algorithm, after a full analysis of the advantages and disadvantages of existing algorithms, In the process of node mapping, taking into account the available topological resources in the local region of nodes, a regional topology aware virtual network mapping algorithm is proposed. It effectively improves the receiving rate of virtual network mapping requests and the average income of the underlying physical network.) the distributed performance of ONOS and the overall structure of ONOS are deeply studied. In this paper, a virtual network mapping system is designed and implemented in ONOS. In the mapping system, a region topology aware virtual network mapping algorithm is implemented. The important link of ONOS supporting network virtualization technology is completed. And considering the subsequent improvement into a complete network virtualization system. The virtual mapping system can respond to the virtual network mapping request effectively.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.0

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