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毕业设计(论文)--基于sdn的数据包控制策略的研究.doc
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毕业设计(论文)--基于sdn的数据包控制策略的研究.doc
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南 京 工 程 学 院
毕业设计说明书(论文)
作 者: 学 号:
院 系: 通信工程学院
专 业: 通信工程(无线通信)
题 目: 基于 SDN 的数据包控制策略
的研究
指导者: 教授
评阅者:
2014 年 6 月 南 京
The strategy of Data packet Forward
based on SDN Controller
A Dissertation Submitted to
Nanjing Institute of Technology
For the Academic Degree of Bachelor of Science
By
Ye Ji
Supervised by
Professor Weikang Shen
College of Communication Engineering
Nanjing Institute of Technology
June 2014
摘 要
随着互联网的高速发展、业务的丰富多样以及用户的与日俱增,计算资源
支撑不足、设备更新成本巨大成为互联网企业无法回避的问题。软件定义网络
(Software-Defined Networking,简称 SDN)作为革命性的解决方案,提出了
控制 平面 和数 据平面解耦的思想,相较于传统网络的分布式架构有了质的飞
跃。软件定义网络为解决传统网络难题提供了新的思路,学术界和工业界也纷
纷提出了基于 SDN 的网络新型应用。流量工程作为传统网络面对的难题,一直
是网络研究领域中的热点问题。
本课题在 SDN 流量工程的场景下,提出基于软件定义网络的流量调度系
统。通过对流量进行深度解析以确定网络的流量类型,进行链路信息统计以获
取全网链路状态。在此基础上针对确定的流量类型下发相应的的调度策略,以
达到流量高效传输的目的,并提升带宽利用率、优化网络性能。搭建相应的实
验环境进行传统网络解决方案与本课题调度策略的对比测试,从多角度对该调
度策略的效率进行分析。本文的流量调度系统作为流量工程在软件定义网络的
一个尝试,为后续流量工程解决方案的研究提供新的思路。
关键词:软件定义网络;SDN;流量工程;路由策略;计算机网络
Abstract
With the fastly development of Internet, business variety, and the user's
growing, computing resources to support the insufficiency, the huge cost of
equipment update become the Internet enterprise the question which is unable to
avoid. Software - Defined Networking as a revolutionary solution, puts forward
the control plane and data plane decoupling thoughts, compared with the
traditional network distributed architecture have a qualitative leap.Software
defined network offers a new way to solve the problems of traditional network,
academia and industry have also proposed a new network applications based on
SDN.Facing the problem of traffic engineering as a traditional network, has been
a hot issue in the field of network research.
This topic in engineering SDN flow scenarios, traffic dispatching system
based on software defined network is put forward.Through the study of the depth
of flow analysis to determine the type of traffic network, to link information
statistics for entire network link status.On this basis to determine the flow type
issued corresponding scheduling strategy, in order to achieve the purpose of flow
efficient transmission, and improve the bandwidth utilization, optimization of
network performance.Structures, corresponding experimental environment for the
traditional network solution and the task scheduling strategy of contrast test, from
multiple perspectives to analyze the efficiency of the scheduling policy.In this
paper, the flow scheduling system for traffic engineering in software defined
network an attempt, for subsequent traffic engineering solution research provides
new train of thought.
Key words : Software Define Network;SDN;Traffic Engineering; Routing
Policy;Computer Network.
目录
第一章 绪论.........................................................................................................................1
1.1 背景及意义..............................................................................................................1
1.2 国内外研究现状.....................................................................................................2
1.2.1 国外研究现状...............................................................................................3
1.2.2 国内研究现状...............................................................................................3
1.3 论文主要研究内容.................................................................................................4
1.4 主要章节安排.........................................................................................................4
第二章 软件定义网络基础知识.........................................................................................5
2.1 软件定义网络概述.................................................................................................5
2.2 软件定义网络优势.................................................................................................5
2.3 软件定义网络主要技术.........................................................................................5
2.3.1 南向接口.......................................................................................................5
2.3.2 北向接口.......................................................................................................6
第三章 方案分析论证.........................................................................................................6
3.1 流量调度问题.........................................................................................................6
3.2 传统网络解决方案.................................................................................................7
3.2.1 路由协议实现流量调度...............................................................................7
3.2.2 MPLS 实现流量调度 ....................................................................................8
3.2 本课题解决方案...................................................................................................10
3.2.1 方案整体架构.............................................................................................10
3.2.2 方案主要流程.............................................................................................11
3.3 对比分析...............................................................................................................12
3.3.1 动态配置效率.............................................................................................13
3.3.2 策略更新效率..............................................................................................14
第四章 系统方案详细介绍...............................................................................................15
4.1 整体架构图...........................................................................................................15
4.2 整体架构层次分析...............................................................................................15
4.2.1 基础控制层.................................................................................................15
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