摘 要
软件定义网络（SDN）作为一种新兴的网络架构，通过将控制平面与数据平面分离，实现了网络流量的集中化管理和灵活控制，但其流表规则冲突问题日益凸显，对网络性能和安全性造成威胁。为解决这一问题，本文旨在研究SDN中流表规则冲突的检测与解决策略。具体而言，论文首先分析了流表规则冲突的类型及其产生机制，包括优先级冲突、覆盖冲突和不一致冲突等，并提出了一种基于有向无环图（DAG）的冲突检测算法，该算法能够高效识别流表中的潜在冲突规则。所提方法在大规模网络环境下具有较高的检测准确率和较低的时间复杂度，同时显著改善了网络吞吐量和延迟表现。本文的主要贡献在于提出了针对SDN流表规则冲突的系统化解决方案，不仅增强了网络管理的智能化水平，还为未来SDN架构的设计提供了理论支持和技术参考。
关键词：软件定义网络；流表规则冲突；有向无环图；冲突检测算法；动态冲突解决机制
Flow Table Rule Conflict Detection and Resolution Strategies in Software-Defined Networking
英文人名
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Abstract
Software defined network (SDN), as a new network architecture, realizes centralized management and flexible control of network traffic by separating the control plane from the data plane. However, the conflict of flow table rules is increasingly prominent, which poses a threat to network performance and security. In order to solve this problem, this paper aims to study the detection and resolution strategy of flow table rule conflict in SDN. Specifically, this paper first analyzes the types of flow table rule conflicts and their generation mechanism, including priority conflict, coverage conflict and inconsistency conflict, and proposes a conflict detection algorithm based on directed acyclic graph (DAG), which can efficiently identify potential conflict rules in flow table. The proposed method has high detection accuracy and low time complexity in large-scale network environment, and significantly improves network throughput and latency performance. The main contribution of this paper is to propose a systematic solution to SDN flow table rule conflict, which not only enhances the intelligentized level of network management, but also provides theoretical support and technical reference for the future design of SDN architecture.
Keywords: Software Defined Networking；Flow Table Rule Conflict；Directed Acyclic Graph；Conflict Detection Algorithm；Dynamic Conflict Resolution Mechanism
目 录
引言 1
一、软件定义网络基础与冲突问题概述 1
(一)软件定义网络架构分析 1
(二)流表规则的基本原理 2
(三)流表规则冲突的类型与影响 2
二、流表规则冲突检测技术研究 3
(一)冲突检测的关键挑战 3
(二)基于规则匹配的冲突检测方法 3
(三)高效冲突检测算法设计 4
三、流表规则冲突解决策略分析 4
(一)冲突解决的原则与目标 4
(二)优先级调整策略研究 5
(三)动态规则更新机制设计 5
四、冲突检测与解决的实际应用与优化 6
(一)实验环境与数据集构建 6
(二)算法性能评估与分析 7
(三)系统优化与未来方向 7
结论 8
参考文献 9
致谢 9
