基于SDN的电力数据中心路由策略研究

发布时间：2018-05-23 23:12

本文选题：电力数据中心 + SDN　；参考：《华北电力大学》2017年硕士论文

【摘要】：随着国家电网“十二五”及“十三五”计划期间先后宣布和实施“坚强智能电网计划”、“三大五集重要举措”和“能源互联网战略”,电力数据中心网络起到极其重要支撑的作用。与此同时为了确保相关支撑信息系统能够稳定运行,这也对电力系统数据中心网络的通信能力有了更加严格的要求,尤其是当前云计算、大数据等技术在电力系统中的应用方兴未艾,数据流量剧增,从而导致了电力数据中心网络中规模不断扩大以及给其带来巨大压力,因此,现存的电力网络体系结构中目前很难满足未来快速发展的需求。网络QoS能够给网络带来高效的运行、提升网络效率和降低网络成本开销。因此,如何在电力数据中心网络中实现特定的QoS和网络路由策略成为研究热点。SDN采用OpenFlow协议是一种基于多域网包头描述的流转发机制的控制/转发分离的网络,真正可以成为解决电力数据中心网络路由问题的一项关键技术。本文首先对电力企业数据中心网络的现状和面对的问题阐述和分析。给出了SDN技术和OpenFlow协议出现的背景,阐述了SDN的基本思想和OpenFlow技术,细致的描述了OpenFlow交换机的大致构成,OpenFlow协议的发展历程、消息类型和消息的基本数据机构,简介了几种通用的SDN控制器和Floodlight控制器的主要模块。分析基于SDN技术用于电力数据中心网络存在的问题解决的可行性。通过对基于SDN的电力数据中心路由策略研究,利用SDN提出的控制层与数据层分离的思想,提出了一种基于OpenFlow的QoS-ensure流量控制方法,该方法主要由QoS流量控制策略框架来实现,主要模块包括:QoS路由管理、路由引擎、QoS控制、数据监测、故障监测、链路发现等。框架中数据监视、链路发现和故障监测模块来收集OpenFlow交换机中相应的信息。收集到的信息传送给路由引擎和QoS控制模块,QoS控制模块将分析的QoS信息发送给路由引擎模块,路由引擎模块根据自己路由算法决定路径选择。路由算法采取了优化的智能启发式蚁群算法方式来进行链路的选择。结尾通过使用Mininet网络仿真平台和Floodlight控制器对提出的路由策略进行仿真实验和得出相关数据,最后和ECMP算法进行性能比较,证实了本文提出的路由策略的有效性和可行性。
[Abstract]:With the State Grid's 12th Five-Year Plan and the 13th Five-Year Plan announced and implemented successively during the "strong Smart Grid Plan," three major five major initiatives "and" Energy Internet Strategy, " Power data center network plays an extremely important role in supporting. At the same time, in order to ensure the stable operation of the related supporting information systems, there are more stringent requirements for the communication capability of the power system data center network, especially in the current cloud computing. The application of big data and other technologies in the power system is in the ascendant, and the data flow is increasing dramatically, which leads to the continuous expansion of the scale of the power data center network and brings great pressure to it, so, The current power network architecture is difficult to meet the needs of rapid development in the future. Network QoS can bring high efficiency to network, improve network efficiency and reduce network cost. Therefore, how to implement specific QoS and network routing strategy in power data center network has become a research hotspot. OpenFlow protocol is a separate control / forwarding network based on the flow transmission mechanism described by the packet header of multi-domain network. It can be a key technology to solve the routing problem of power data center network. In this paper, the current situation and problems of electric power enterprise data center network are described and analyzed. This paper gives the background of SDN technology and OpenFlow protocol, expounds the basic idea of SDN and OpenFlow technology, and describes in detail the development course, message type and basic data organization of OpenFlow switch. The main modules of several general SDN controllers and Floodlight controllers are introduced. The feasibility of using SDN technology to solve the problems in power data center network is analyzed. By studying the routing strategy of power data center based on SDN and using the idea of separating control layer and data layer proposed by SDN, a QoS-ensure flow control method based on OpenFlow is proposed. This method is mainly implemented by QoS traffic control strategy framework. The main modules include: QoS routing management, routing engine QoS control, data monitoring, fault monitoring, link discovery and so on. The data monitoring, link discovery and fault monitoring modules in the framework collect the corresponding information in the OpenFlow switch. The collected information is transmitted to the routing engine and the QoS control module, which sends the analyzed QoS information to the routing engine module, which determines the path selection according to its own routing algorithm. The routing algorithm adopts the optimized intelligent heuristic ant colony algorithm to select the link. In the end, the proposed routing strategy is simulated by using Mininet network simulation platform and Floodlight controller, and the relevant data are obtained. Finally, the effectiveness and feasibility of the proposed routing strategy are verified by comparing the performance of the proposed routing strategy with the ECMP algorithm.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP308;TP393.0

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