基于应用路径映射表的应用感知网络研究和设计

发布时间：2018-06-18 01:51

本文选题：应用感知网络 + 软件定义网络　；参考：《北京邮电大学》2017年硕士论文

【摘要】：随着互联网的普及和应用内容的丰富,网络流量已经从文本和语音为主变为视频和实时交互为主。传统网络架构面对复杂的业务类型和巨大的网络流量开始出现瓶颈。在这样的背景下,虚拟化、云计算等新的网络技术开始蓬勃发展。云计算通过其可定制、易拓展以及按需获取的特点吸引大量用户将应用迁移或直接搭建在云数据中心。正因为越来越多的应用搬上了 “云”端,“云”的数据中心以及网络拓扑也渐渐地面临着传统互联网所面临的拥塞,负载不均以及安全等问题。软件定义网络(SDN)、网络功能虚拟化(NFV)、深度包检测(DPI)等新技术的出现,使得研究人员开始尝试使用应用感知网络来解决上述问题。它的核心理念是通过将网络交换设备的控制与数据转发分离,由一个或多个集中化的控制器负责管理整个网络中的转发设备,同时通过对应用数据包的检测分析,识别数据包的所属应用,再根据应用类型通过控制器进行网络资源的调配。本文通过研究软件定义网络中南向接口与控制器,以及深度包检测中应用分类,利用应用与转发路径的映射关系实现根据应用进行资源调度功能的应用感知网络。本文首先介绍了软件定义网络和应用感知网络的研究现状,然后详解OpenFlow协议、OpenDaylight控制器与深度包检测技术,接着介绍了应用路径映射表的结构和应用场景,最后利用控制器对网络的集中控制和应用路径映射表来实现根据应用进行资源调度功能的应用感知网络,解决云数据中心中负载不均、拥塞的问题,为不同的用户和应用提供更优质的QoS。
[Abstract]:With the popularity of the Internet and rich applications, network traffic has changed from text and voice to video and real-time interaction. Traditional network architecture is facing the bottleneck of complex business types and huge network traffic. In this context, virtualization, cloud computing and other new network technology began to flourish. Cloud computing attracts a large number of users to migrate applications or build them directly in cloud data centers through its customizable, extensible and on-demand characteristics. As more and more applications move to the "cloud" end, the data centers and network topologies of the "cloud" are gradually facing the problems of congestion, uneven load and security caused by the traditional Internet. The emergence of new technologies such as software defined network (SDN), network function virtualization (NFV) and depth packet detection (DPI) makes researchers try to solve these problems by using application-aware network. Its core idea is to separate the control of network switching devices from the data forwarding, and to manage the forwarding devices in the whole network by one or more centralized controllers, and at the same time, to detect and analyze the application data packets. Identify the application of the packet, and then according to the type of application through the controller for the allocation of network resources. In this paper, we study the software definition of southward interface and controller in the network, as well as the classification of applications in depth packet detection, and use the mapping relation between the application and the forwarding path to realize the application-aware network with resource scheduling function according to the application. This paper first introduces the research status of software defined network and application aware network, then explains the OpenFlow protocol, OpenDaylight controller and depth packet detection technology, and then introduces the structure and application scenario of the application path mapping table. Finally, the centralized control of the network by controller and the application path mapping table are used to realize the application-aware network with the resource scheduling function according to the application, which solves the problem of uneven load and congestion in the cloud data center. Provide better QoS for different users and applications.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.0

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