面向电信网的SDN北向接口系统设计

发布时间：2018-05-24 14:36

本文选题：电信网 + 软件定义网络　；参考：《南京邮电大学》2017年硕士论文

【摘要】：SDN(Software Defined Network,软件定义网络)将传统网络中控制与转发功能进行解耦,采用集成了网络控制功能的SDN控制器通过开放南向接口对整个网络进行统一的配置管理,在业务应用方面,通过北向接口对网络应用提供可编程能力的支持,SDN技术的这些优势为替代传统网络提供了很好的方向,为解决新兴的电信网络业务应用提供了可能。SDN通过北向接口为应用开发提供可编程接口,使得网络业务开发人员不仅可以实现传统电信应用的开发,而且可以实现创新性网络应用。由于各厂商北向接口开放方式的不同,网络应用的复杂多变,业界目前对北向接口并没有一个统一的标准。更好的设计北向接口,不仅有利于SDN网络技术的本身的发展,更决定了未来网络应用的发展速度。论文通过对SDN在电信网中的应用及控制功能的研究,对SDN控制器北向接口的业务需求进行了分析,对需求进行了提炼。基于SDN控制器北向接口服务功能的抽象级别,设计了一种基于层次化架构的北向接口模型,将北向接口层次模型分为基本级、网络级、业务级三层,通过上层调用下层API,实现更高级别的API。论文采用REST(Representational State Transfer,表述性状态转移)相关技术进行开发,实现了一种功能可扩展的SDN北向接口;针对流媒体等对QoS(Quality of Service,服务质量保证)具有较大需求的电信网络业务应用,设计并实现了具有QoS参数的SDN北向接口,包括链路网络参数的获取,如丢包、时延等,还可以对用户流带宽的管理。并基于QoS北向接口设计了一个业务应用服务层,使得网络管理人员可以实时获取网络中服务质量参数,进行网络控制。测试结果表明,论文设计的层次化北向接口具有一定的灵活性和可扩展性,能够对电信网的QoS业务应用提供一定的支持。
[Abstract]:SDN (Software Defined Network, software defined network) decouples the control and forwarding function of the traditional network, and uses the SDN controller with integrated network control function to manage the whole network through the open South interface. In the business application, it provides the programmability of the network application through the north interface. The advantages of SDN technology provide a good direction to replace the traditional network, and provide the possible.SDN through the north interface to provide a programmable interface for the application and development of the new telecom network services, so that the network business developers can not only realize the development of the traditional electrical letter application, but also realize the innovative network. Because of the different open ways of each vendor's north interface and the complex and changeable network application, the industry has not a unified standard for the north interface. Better design of the north interface is not only beneficial to the development of SDN network technology itself, but also the development speed of the network in the future. The paper through the SDN in the telecommunication network The application and control function of the SDN controller are analyzed and the demand of the north interface is analyzed and the demand is refined. Based on the abstract level of the north interface service function of the SDN controller, a north interface model based on the hierarchical architecture is designed, which divides the North connection level model into the basic level, the network level, and the business level three. Layer, through the upper layer call lower API, to achieve a higher level API. paper using REST (Representational State Transfer, expressive state transfer) related technologies to develop a functional scalable SDN north interface; a telecommunication network with large demand for QoS (Quality of Service, quality of service) and so on. Business applications, design and implement a SDN north interface with QoS parameters, including link network parameters, such as packet loss, delay, and the management of user flow bandwidth. Based on the QoS north interface, a business application service layer is designed to enable network managers to obtain real-time network service quality parameters and network. The test results show that the hierarchical north direction interface designed by the paper has a certain flexibility and extensibility, and can provide some support to the QoS service application of the telecommunication network.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN915.02

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