面向Internet的SDN运行机制研究

发布时间：2018-04-28 13:45

本文选题：OpenFlow + SDN　；参考：《西安工业大学》2017年硕士论文

【摘要】：随着网络应用需求的不断变化以及网络创新的不断推进,传统网络设备数据与控制平面的紧耦合使得其不能够提供灵活的网络控制、自动化的网络配]以及开放网络能力等。SDN(Software Defined Networking,软件定义网络)的提出顺应了当前网络创新的趋势。SDN的核心即网络设备转发与控制平面的分离,以软件驱动网络,使网络的管理、控制变得更加灵活、智能。为了能在当前Internet环境下,充分利用SDN技术,对当前网络进行优化,同时,满足不断增长的网络应用需求,对SDN网络运行机制的研究是相当必要的。本文通过深入研究SDN网络架构及关键技术,搭建SDN网络实验环境。在此基础之上,对SDN南向网络通信机制、北向网络应用运行机制进行深入分析与研究,最终能够从整体的角度对Internet环境下整个SDN网络的通信机制进行充分认识,并能够将SDN网络架构及相关技术应用到与本课题相关的案例之中,在本论文中,主要做了以下工作:首先,对当前国内外SDN的发展状况进行概述。描述了当前国内各大设备厂商、互联网企业SDN相关的研究进展以及国外各大公司对于SDN技术的应用所作的相关工作。其次,借鉴可编程网络以及SDN网络架构的设计思路,结合具体的网络应用需求,设计了SDN三层网络框架。并分别对基础设施平面、控制平面及应用平面的设计进行详细阐述;随后,对SDN南向网络OpenFkw通信机制进行了深入研究。同时,对传统二、三层转发机制在SDN环境下的运行过程进行了深入分析,并通过OpenDayLight北向接口开发了SDN Web访问控制应用,对南向网络通信机制进行了实验验证。最后,通过对OpenDayLight控制器功能、OSPF路由协议、Dijkstra算法的深入研究,开发了基于OpenDayLight北向REST接口的SDN网络管理应用、静态路由应用、基于Dijkstra算法的动态路由应用,对SDN北向网络应用运行机制进行研究,从而能够对Internet环境下SDN网络运行机制有整体的把握。
[Abstract]:With the continuous changes of network application requirements and the continuous promotion of network innovation, the tight coupling of traditional network equipment data and control plane makes it unable to provide flexible network control. The automatic network matching and the open network capability, etc. SDN software Defined networking (software definition network), which conform to the current trend of network innovation. The core of SDN is the separation of network equipment forwarding and control plane, so as to drive the network with software, so that the network can be managed. Control becomes more flexible and intelligent. In order to make full use of SDN technology to optimize the current network under the current Internet environment, and to meet the increasing demand of network applications, it is necessary to study the operation mechanism of SDN network. In this paper, the SDN network architecture and key technologies are studied, and the SDN network experimental environment is built. On this basis, the communication mechanism of SDN network in the south direction and the running mechanism of the network application in the north direction are deeply analyzed and studied. Finally, the communication mechanism of the whole SDN network under the environment of Internet can be fully understood from the whole angle. And the SDN network architecture and related technologies can be applied to the case related to this topic. In this paper, the main work is as follows: first, the development of domestic and foreign SDN is summarized. This paper describes the research progress of SDN in domestic equipment manufacturers and Internet enterprises, and the related work on the application of SDN technology in foreign companies. Secondly, referring to the design idea of programmable network and SDN network architecture, combining with the specific network application requirements, the three-layer network framework of SDN is designed. The design of infrastructure plane, control plane and application plane are described in detail. Then, the communication mechanism of SDN southward network OpenFkw is deeply studied. At the same time, the running process of the traditional two-layer and three-layer forwarding mechanism under SDN environment is deeply analyzed, and the application of SDN Web access control is developed through the northward interface of OpenDayLight, and the network communication mechanism in the south is verified experimentally. Finally, through the thorough research on the OpenDayLight controller's function and routing protocol, the SDN network management application, static routing application and dynamic routing application based on Dijkstra algorithm are developed based on OpenDayLight northward REST interface. This paper studies the running mechanism of SDN northward network application, so that it can grasp the operation mechanism of SDN network under Internet environment.
【学位授予单位】：西安工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.02

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