基于Floodlight的SDN控制器研究

发布时间：2018-06-26 14:39

本文选题：软件定义网络 + SDN控制器　；参考：《计算机工程与应用》2016年24期

【摘要】：目前正在使用的网络架构已有30年的历史。在此架构下,交换机/路由器需要在超过6 000个分布式协议中使整个网络正常运行。这意味着只要有一个网元增加一种新的协议,其他网元都必须在结构上做出变更。SDN(Software Defined Network,软件定义网络)则打破了这种桎梏,它使得网络可编程,从而让网络在满足用户需求方面更具灵活性。SDN架构将控制和转发解耦,将控制功能集中到逻辑独立的控制环境之中,同时为应用层提供底层网络的抽象视图。结果就是SDN可以为用户提供可编程性极强的网络、网络自动化管理以及网络控制等功能,从而满足日益变化与丰富的网络需求。SDN控制器在SDN架构中的作用至关重要,它既要与基础设施层交互也需要与应用层经由API交互。首先分析了SDN架构的产生背景、原理和其发展现状;随后研究并分析了一个SDN控制器的开源项目Floodlight;最后通过对当前7种控制器的实验以及SDN相关原理对SDN控制器的特性进行了总结与分析。
[Abstract]:The network architecture in use is 30 years old. Under this architecture, switches / routers need to make the entire network work properly in more than 6,000 distributed protocols. This means that as long as one network element adds a new protocol, other network elements must make structural changes. SDN (Software defined Network) breaks this shackle, which makes the network programmable. In order to make the network more flexible in meeting the needs of users, the SDN architecture will decouple control and forward, centralize the control function into a logically independent control environment, and provide the application layer with an abstract view of the underlying network at the same time. The result is that SDN can provide users with very programmable network, network automation management, network control and other functions, thus meeting the ever-changing and rich network requirements. The role of SDN controller in SDN architecture is very important. It interacts with both the infrastructure layer and the application layer via the API. Firstly, the background, principle and development status of SDN architecture are analyzed. Then, an open source project of SDN controller, Floodlight, is studied and analyzed. Finally, the characteristics of SDN controller are summarized and analyzed by the experiments of seven kinds of controllers and the related principles of SDN.
【作者单位】：中国科学院大学计算机与控制工程学院;中国科学院信息工程研究所;
【基金】：国家自然科学基金-青年科学基金项目(No.61402432) 中国科学院大学校长基金项目
【分类号】：TP393.02

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