基于LACP多激活检测方法和处理机制的研究

发布时间：2019-03-25 06:37

【摘要】：当今社会,随着数据业务量的迅速增长和网络使用者对网络服务质量要求的不断提高,高可用性已经成为衡量高性能网络最重要的指标之一。目前链路聚合技术通过传输链路备份可提高网络高可用性,已成为必用的组网方案之一。虚拟交换技术通过增加网络拓扑中冗余节点和备份设计,可大程度提高网络高可用性,是网络高可用性保障的最优解决方案。其具体表现为：将多台框式分布式设备虚拟为一台虚拟设备,上下联设备通过跨设备链路聚合与虚拟设备相连,既提供了冗余链路,又实现动态负载均衡,且充分利用所有带宽。当其中一条物理链路出现故障时,切换到另一条链路的时间在毫秒内。这样通过多链路备份提高了网络的高可用性。另外这种组网方式因无需配置MSTP、VRRP协议而简化了网络配置。当然虚拟交换技术也有其不足,即当虚拟设备内某两个成员设备间链路出现故障时虚拟设备发生分裂,形成两个虚拟设备,出现多激活现象,导致网络瘫痪。因此如何快速检测到多激活及检测到多激活后该如何处理对于虚拟交换技术的发展是极其重要的。目前各个框式分布式设备厂商已经提出了多激活检测方法和处理机制,基于此,本文介绍一种多激活检测方法和处理机制,该方法以链路聚合技术中的LACP协议和虚拟交换技术为背景,所做工作主要是在软件层面上对基于LACP的多激活检测模块和处理模块进行设计与实现。在对链路聚合技术和虚拟交换技术进行了研究与分析后,本文先对多激活检测方法和处理机制原理进行了分析,其次对多激活检测模块和处理模块进行了总体设计,然后采用开发工具进行实现,最后在实验设备上验证设计内容是否具有可行性。通过实验测试,当多激活发生时,采用本文设计的多激活检测模块和处理模块,可检测到多激活,并可保证网络正常运行。
[Abstract]:In today's society, with the rapid growth of data traffic and the increasing demand of network users for network quality of service, high availability has become one of the most important indicators to measure high-performance networks. At present, link aggregation technology can improve network high availability through transmission link backup, and has become one of the necessary networking schemes. Virtual switching technology can greatly improve network high availability by adding redundant nodes and backup design in network topology. It is the best solution to guarantee network high availability. Its concrete performance is as follows: the multi-frame distributed device is virtual as a virtual device, and the up-and-down devices are connected to the virtual device through the aggregation of cross-device links, which not only provides redundant links, but also realizes dynamic load balancing. And make full use of all the bandwidth. When one of the physical links fails, the time to switch to the other is within milliseconds. In this way, the high availability of the network is improved through multi-link backup. In addition, the network configuration is simplified because it does not need to configure MSTP,VRRP protocol. Of course, the virtual switching technology also has its shortcomings, that is, when the link between two member devices in the virtual device fails, the virtual device splits, forms two virtual devices, and the phenomenon of multi-activation results in the network paralysis. Therefore, how to quickly detect multi-activation and how to deal with it after detection of multi-activation is very important for the development of virtual switching technology. At present, various distributed device manufacturers have proposed multi-activation detection methods and processing mechanisms. Based on this, this paper introduces a multi-activation detection method and processing mechanism. This method is based on the LACP protocol and virtual switching technology in link aggregation technology. The main work of this method is to design and implement the multi-activation detection module and processing module based on LACP on the software level. After the research and analysis of link aggregation technology and virtual switching technology, this paper first analyzes the principle of multi-activation detection method and processing mechanism, and then designs the multi-activation detection module and processing module as a whole. Then use the development tool to realize, finally verify the feasibility of the design content on the experimental equipment. Through the experimental test, when the multi-activation occurs, the multi-activation detection module and the processing module designed in this paper can be used to detect the multi-activation and ensure the normal operation of the network.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP393.05

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