應用於企業軟體定義網路之網路終端設備虛擬化架構與服務設計

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研究生：	林哲緯 Lin, Che Wei
論文名稱：	應用於企業軟體定義網路之網路終端設備虛擬化架構與服務設計 A Novel Virtual CPE Architecture and Service for Enterprises with SDN Network Technologies
指導教授：	黃能富 Huang, Nen Fu
口試委員:	石維寬 Shih, Wei Kuan 陳俊良 Chen, Jiann Liang
學位類別：	碩士 Master
系所名稱：	電機資訊學院 - 通訊工程研究所 Communications Engineering
論文出版年：	2016
畢業學年度：	104
語文別：	英文
論文頁數：	53
中文關鍵詞：	軟體定義網路、基於雲端CPE 、虛擬化、虛擬家用閘道、雲端運算、電腦網路管理、網路功能虛擬化、虛擬CPE 、網路服務
外文關鍵詞：	SDN, cloud-based CPE, virtualization, virtual residential gateway, cloud computing, computer network management, NFV, virtual CPE, network services
相關次數：	點閱：3 下載：0
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近來，軟體定義網路和網路功能虛擬化之技術被提出，並將其應用至各種網路設備以進行網路終端設備虛擬化。網路終端設備虛擬化可以為企業網路和電信業者帶來的好處，包含彈性的網路功能部署及快速的網路功能傳遞至終端，使訂閱這類型網路功能服務之消費者擁有更高的彈性以及可用性。網路終端虛擬化之解決方案，能夠非常顯著地減少大型企業客戶或互聯網服務供應商之資本性支出和營運成本。本論文旨在提出一套網路終端設備虛擬化之框架，此框架高度運用網路功能虛擬化及網路終端設備之設計概念，分別應用在企業網路及家用住宅網路。在此論文中，我們也設計數個網路虛擬功能例如：網路地址轉換、動態主機設定協定、防火牆、流量監控和服務品質頻寬管理，這些網路功能將運行於網路終端設備虛擬化之框架上，而這些虛擬網路功能可以提供給企業網管者透過網頁操作介面做到網路功能管理。實驗結果顯示，我們設計的網路虛擬功能，除了能夠彈性且快速的部署之外，在效能方面，還能夠達到並且超越現有傳統硬體網路終端設備之效能，最後能夠與我們所提出的網路終端設備虛擬化之框架整合並提供網路設備虛擬化之服務。

In these days, Software-Defined Networking (SDN) and Network Function Virtualization (NFV) technologies have been proposed to virtualize all classes of network devices to create more flexible services for enterprise network and telecom operators can rapid delivery services for their customers. The virtual CPE solution results in significant reduce capital expenses (CapEx) and operation expenses (OpEx) savings as large enterprise customers. In this thesis, we integrated the concept of NFV and CPE to design and implemented a novel virtual CPE architecture and service platform for residences and enterprise networks. Several virtual services, such as NAT, DHCP, firewall, traffic monitoring, and QoS management are provided and enterprise customers can just subscribe these services via the web-based user interface. Experimental results show that the proposed framework performs well, and every user subscribed service could work successfully and independently.

Abstract i 
Acknowledgement ii 
Contents iii 
List of Figures vi 
List of Tables viii 
Chapter 1 Introduction 1

Chapter 2 Related Work 6
1 Software-DefinedNetworking...................... 7 
1.1 SDNArchitecture........................ 7 
1.2 SDNOperation ......................... 8 
1.3 SDNDevices .......................... 9
2 OpenFlow................................ 11 
2.1 Logical OpenFlow Switch Architecture . . . . . . . . . . . . 11 
2.2 OpenFlowProtocol....................... 12
3 NetworkFunctionsVirtualization ................... 16
4 Related Work of VitualCPE Platform ................ 16 
4.1 OpenNaaS framework ..................... 17 
4.2 NetFATE platform ....................... 18 
4.3 ECOMP architecture from AT&T............... 19

Chapter 3 System Design and Implementation 21
1 Architecture of the Main System ................... 22 
1.1 SystemOverview ........................ 23 
1.2 Reference Architecture - ETSI NFV MANO Model . . . . . 24 
1.3 vCPEPlatformNFVArchitecture .............. 25
2 System Implementation......................... 25
2.1 Infrastructure Controller.................... 26
2.2 Infrastructure Orchestrator .................. 27
2.3 CloudDatabase......................... 28 
2.4 VNFControllers ........................ 28 
2.5 VNFOrchestrator ....................... 29 
2.6 VirtualCPE........................... 31 
2.6.1 Layer2Switching .................. 31 
2.6.2 DHCP......................... 33 
2.6.3 NAT.......................... 34 
2.6.4 Firewall ........................ 36 
2.6.5 QualityofServiceManagement . . . . . . . . . . . 37
2.7 VirtualResidentialGateway.................. 37

Chapter 4 Experimental Results 39
1 OverviewoftheExperimentEnvironment . . . . . . . . . . . . . . 39
2 NAT Performance on Traditional Hardware-based CPE . . . . . . . 41 
2.1 CPUUtilizationMeasurement................. 41 
2.2 ThroughputMeasurement ................... 42
3 NATPerformanceonVirtualCPE .................. 43 
3.1 CPUUtilizationMeasurement................. 43 
3.2 ThroughputMeasurement ................... 44 
3.3 VirtualNATScalability .................... 45
4 CompareandContrastDiscussion................... 46
Chapter 5 Conclusion and Future Work 48
Bibliography 51
                                

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