發(fā)布時間：2019-03-16 17:39

【摘要】：軟件定義網(wǎng)絡(luò)(Software Defined Network,簡稱SDN),是由美國斯坦福大學(xué)提出的一種新型網(wǎng)絡(luò)創(chuàng)新架構(gòu)。為了實現(xiàn)網(wǎng)絡(luò)流量的靈活控制,SDN將網(wǎng)絡(luò)設(shè)備的控制平面與數(shù)據(jù)平面分離,以簡化傳統(tǒng)網(wǎng)絡(luò)的配置管理工作。隨著物聯(lián)網(wǎng)技術(shù)的不斷發(fā)展,物聯(lián)網(wǎng)設(shè)備的不斷增多導(dǎo)致來自于物聯(lián)網(wǎng)的流量將大大增加,網(wǎng)絡(luò)負載均衡、智能網(wǎng)絡(luò)流量管理將也將面臨較大的壓力。在未來網(wǎng)絡(luò)中,基于傳統(tǒng)網(wǎng)絡(luò)的物聯(lián)網(wǎng)架構(gòu)難以滿足龐大的物聯(lián)網(wǎng)網(wǎng)絡(luò)業(yè)務(wù)發(fā)展需求。SDN的集中式控制整合了網(wǎng)絡(luò)及服務(wù)器,在SDN控制器中形成統(tǒng)一的控制視圖,提升全網(wǎng)的性能及服務(wù)質(zhì)量。本文的目標是提出一種基于SDN的物聯(lián)網(wǎng)框架,實現(xiàn)一個物聯(lián)網(wǎng)網(wǎng)關(guān)可以將數(shù)據(jù)轉(zhuǎn)入到SDN交換機中�；赟DN控制器的北向接口實現(xiàn)應(yīng)用層的流量管理中心,由流量管理中心實現(xiàn)網(wǎng)絡(luò)的智能管理,由SDN控制器進行統(tǒng)一的管理和調(diào)度�；赟DN的物聯(lián)網(wǎng)流量智能管理機制包括流量管理中心APP、物聯(lián)網(wǎng)網(wǎng)關(guān)及物聯(lián)網(wǎng)應(yīng)用。流量管理中心APP包含四個模塊:資源管理中心、流量探測統(tǒng)計中心、選路中心以及流表控制中心,四個模塊協(xié)同配合完成物聯(lián)網(wǎng)流量智能管理功能。物聯(lián)網(wǎng)網(wǎng)關(guān)由OVS和6LowPAN邊界路由組成,實現(xiàn)SDN網(wǎng)絡(luò)與物聯(lián)網(wǎng)邊界路由的通信。物聯(lián)網(wǎng)應(yīng)用基于CoAP應(yīng)用層協(xié)議實現(xiàn)環(huán)境數(shù)據(jù)的傳遞。本文搭建了一種基于SDN的物聯(lián)網(wǎng)系統(tǒng),并且實現(xiàn)了基于SDN控制器的流量管理應(yīng)用。本文進行了系統(tǒng)可用性測試及模塊測試,測試場景包括系統(tǒng)整體可用性測試、流量管理中心模塊功能測試及物聯(lián)網(wǎng)流量管理功能測試。
[Abstract]:Software defined Network (Software Defined Network,) is a new network innovation architecture proposed by Stanford University. In order to realize the flexible control of network traffic, SDN separates the control plane of network equipment from the data plane to simplify the configuration management of traditional network. With the continuous development of Internet of things (IoT) technology and the increasing number of IoT devices, the traffic from IOT will increase greatly. The load balancing of network will lead to the pressure of intelligent network traffic management. In the future network, the Internet of things architecture based on traditional network is difficult to meet the huge needs of Internet of things network business development. The centralized control of SDNs integrates the network and server, and forms a unified control view in the SDN controller. Improve the network performance and quality of service. The goal of this paper is to propose an Internet of things framework based on SDN. An Internet of things gateway can transfer data to the SDN switch. Based on the northbound interface of SDN controller, the traffic management center of the application layer is realized. The intelligent management of the network is realized by the traffic management center, and the unified management and scheduling of the network is carried out by the SDN controller. The intelligent traffic management mechanism of Internet of things based on SDN includes APP, gateway of Internet of things and application of Internet of things. The flow management center APP consists of four modules: resource management center, traffic detection and statistics center, routing center and flow meter control center. The four modules cooperate to complete the intelligent traffic management function of the Internet of things. The gateway of Internet of things is composed of OVS and 6LowPAN boundary routing, which realizes the communication between SDN network and IoT border routing. Internet of things application based on CoAP application layer protocol to achieve the transfer of environmental data. In this paper, a kind of Internet of things system based on SDN is built, and the application of flow management based on SDN controller is realized. In this paper, the system usability test and module test are carried out. The test scenario includes the whole system usability test, the traffic management center module function test and the Internet of things traffic management function test.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TP393.02;TP391.44;TN929.5

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