本文選題：電信網 + 軟件定義網絡　； 參考：《南京郵電大學》2017年碩士論文

【摘要】：SDN(Software Defined Network,軟件定義網絡)將傳統網絡中控制與轉發(fā)功能進行解耦,采用集成了網絡控制功能的SDN控制器通過開放南向接口對整個網絡進行統一的配置管理,在業(yè)務應用方面,通過北向接口對網絡應用提供可編程能力的支持,SDN技術的這些優(yōu)勢為替代傳統網絡提供了很好的方向,為解決新興的電信網絡業(yè)務應用提供了可能。SDN通過北向接口為應用開發(fā)提供可編程接口,使得網絡業(yè)務開發(fā)人員不僅可以實現傳統電信應用的開發(fā),而且可以實現創(chuàng)新性網絡應用。由于各廠商北向接口開放方式的不同,網絡應用的復雜多變,業(yè)界目前對北向接口并沒有一個統一的標準。更好的設計北向接口,不僅有利于SDN網絡技術的本身的發(fā)展,更決定了未來網絡應用的發(fā)展速度。論文通過對SDN在電信網中的應用及控制功能的研究,對SDN控制器北向接口的業(yè)務需求進行了分析,對需求進行了提煉�；赟DN控制器北向接口服務功能的抽象級別,設計了一種基于層次化架構的北向接口模型,將北向接口層次模型分為基本級、網絡級、業(yè)務級三層,通過上層調用下層API,實現更高級別的API。論文采用REST(Representational State Transfer,表述性狀態(tài)轉移)相關技術進行開發(fā),實現了一種功能可擴展的SDN北向接口;針對流媒體等對QoS(Quality of Service,服務質量保證)具有較大需求的電信網絡業(yè)務應用,設計并實現了具有QoS參數的SDN北向接口,包括鏈路網絡參數的獲取,如丟包、時延等,還可以對用戶流帶寬的管理。并基于QoS北向接口設計了一個業(yè)務應用服務層,使得網絡管理人員可以實時獲取網絡中服務質量參數,進行網絡控制。測試結果表明,論文設計的層次化北向接口具有一定的靈活性和可擴展性,能夠對電信網的QoS業(yè)務應用提供一定的支持。
[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.
【學位授予單位】：南京郵電大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN915.02

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