摘要
随着信息技术的飞速发展，网络流量管理与优化已成为提升网络服务质量和用户体验的关键。传统的网络架构在应对复杂多变的网络环境和业务需求时，往往显得力不从心。软件定义网络（SDN）作为一种新型网络架构，通过将网络的控制平面与数据平面分离，并引入集中式的控制器，为网络流量管理与优化提供了新的解决方案。然而，尽管SDN具有诸多优势，但在实际应用中仍面临诸多挑战，如实时性不足、监控与诊断能力有限、管理策略调整不灵活等。因此，本研究围绕基于软件定义网络（SDN）的网络流量管理与优化展开。首先概述了SDN的基本概念、核心技术以及在网络流量管理中的应用。接着，分析了现有基于SDN的网络流量管理存在的局限性，包括实时性挑战、监控与诊断不足以及管理策略调整受限等问题。针对这些局限性，本研究提出了相应的优化策略，包括提升网络流量管理的实时性、加强SDN流量监控与诊断的完善、实现网络流量管理策略的动态调整以及解决优化策略的适配性问题。通过实施这些策略，本研究旨在提升网络流量管理的效率和效果，为网络服务的优化和用户体验的提升提供有力支持。
关键词：软件定义网络；网络流量管理；监控与诊断
Abstract
With the rapid development of information technology, network traffic management and optimization has become the key to improve the network service quality and user experience. The traditional network architecture often fails to cope with the complex and changeable network environment and business needs. Software-defined network (SDN), as a new network architecture, provides a new solution for network traffic management and optimization by separating the control plane of the network and introducing the centralized controller. However, despite its many advantages, SDN still faces many challenges in practical application, such as insufficient real-time performance, limited monitoring and diagnostic capabilities, and inflexible management strategy adjustment. Therefore, this study focuses on network traffic management and optimization based on software-defined network (SDN). First, we outline the basic concepts, core technologies of SDN and its application in network traffic management. Then, the limitations of existing SDN based network traffic management, including real-time challenges, insufficient monitoring and diagnosis, and limited management strategy adjustment. In view of these limitations, this study proposed corresponding optimization strategies, including improving the real-time performance of network traffic management, strengthening the improvement of SDN traffic monitoring and diagnosis, realizing the dynamic adjustment of network traffic management strategy, and solving the adaptation problem of optimization strategy. By implementing these strategies, this study aims to improve the efficiency and effect of network traffic management, and provide strong support for the optimization of network services and the improvement of user experience.
Keywords： Software-defined network; Network traffic management; Monitoring and diagnosis
目 录
摘要 I
Abstract II
一、绪论 1
（一）研究背景和意义 1
（二）国内外研究现状 1
二、软件定义网络概述 3
（一）软件定义网络的基本概念 3
（二）软件定义网络的核心技术 3
三、基于软件定义网络的网络流量管理的局限性 5
（一）网络流量管理的实时性挑战 5
（二）软件定义网络流量监控与诊断的不足 5
（三）网络流量管理策略的动态调整限制 6
（四）网络流量优化策略的适配性问题 6
四、基于软件定义网络的网络流量管理优化策略 8
（一）提升网络流量管理的实时性策略 8
（二）加强软件定义网络流量监控与诊断的完善 8
（三）网络流量管理策略的动态调整优化 9
（四）解决网络流量优化策略的适配性问题 9
结 论 10
参考文献 11
