基於SDN與NFV的資源調度器應用於虛擬網路功能部署及高可用性 - 以即時影音串流服務為例;SDN/NFV-based Resource Orchestrator for VNF Deployment and High Availability - A Case Study of Live Streaming Service

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题名:	基於SDN與NFV的資源調度器應用於虛擬網路功能部署及高可用性 - 以即時影音串流服務為例;SDN/NFV-based Resource Orchestrator for VNF Deployment and High Availability - A Case Study of Live Streaming Service
作者:	林雋策;Lin,Chun-Tse
贡献者:	資訊工程學系
关键词:	軟體定義網路;網路功能虛擬化;虛擬網路功能;負載均衡;高可用性;SDN;NFV;VNF;Load Balance;High Availability
日期:	2015-08-28
上传时间:	2015-09-23 14:52:08 (UTC+8)
出版者:	國立中央大學
摘要:	傳統網路架構正面臨重大的革新，隨著軟體定義網路（Software-Defined Networking，SDN）與網路功能虛擬化(Network Functions Virtualization，NFV)，這兩項嶄新的概念被提出之後，各國網路設備商、電信營運商、晶片設計廠，紛紛投入大量研究資源，參與規格制定與技術研發。SDN將網路分為控制層（Control plane）與資料層（Data plane），透過控制器(Controller)軟體對控制層進行集中式的網路管理，目前以開放網路基金會(Open Networking Foundation，ONF)所推動的OpenFlow為主流技術，作為控制層與資料層之通訊協定。NFV則由歐洲通訊標準協會(European Telecommunications Standards Institute，ETSI)成立的NFV產業規格小組(Industry Specification Group，ISG)進行NFV技術研究與規格化，旨在將各式網路元件如:路由器、防火牆、負載均衡器等網路功能，從專屬的硬體設備中抽離，利用虛擬化技術，轉換成虛擬網路功能(Virtual Network Function，VNF)並透過軟體方式，部署於網路功能虛擬化基礎設施(NFV Infrastructure，NFVI)。本論文根據ETSI提出的NFV 結構框架(NFV Architecture Framework) 於中央大學、成功大學及國家高速網路中心，建置一個大型智能NFV/SDN跨網域測試平台Linct (Large-scale Intelligent NFV/SDN Cross-domain Testbed)並設計實作一NFV資源調度器-Linct Orchestrator，除了對NFVI與VNF的資源利用率與系統狀況進行監測外，也提供VNF的負載均衡及VNF的高可用性模組。本論文提出基於向量VNF部署機制應用於NFVI負載均衡(Vector-Based VNF Deployment Mechanism for NFVI Load Balance ，VBVD)機制，此機制根據各NFVI目前的資源利用率進行計算，選擇最適部署VNF之NFVI，以達到平台內所有NFVI負載均衡與單一NFVI資源利用最佳化及避免資源超載。;Traditional network architecture is facing a revolution. The Software-Defined Networking (SDN) and Network Functions Virtualization (NFV), two new network concepts have been proposed, network equipment manufacturers, telecom operators, IC design house, have invested a lot of research resources, participation in the development of specification. SDN decouples the control plane and data plane, through the Controller application for centralized network management. Currently OpenFlow which promote by Open Networking Foundation (ONF) is the mainstream SDN communication protocol and it as a communication of control plane and data plane. European Telecommunications Standards Institute (ETSI) established NFV Industry Specification Group (ISG) were NFV technology research and specification, aimed at all kinds of network components such as: routers, firewalls, load balancing and other network functions, from a specific hardware device pulled out, the use of virtualization technology, convert to Virtual Network Function (VNF) and through software approach, deployed in the NFV Infrastructure (NFVI). In this paper, according to the NFV Architecture Framework proposed by ETSI to build a Linct (Large-scale Intelligent NFV / SDN Cross -domain Testbed) on National Central University (NCU), National Cheng Kung University (NCKU) and National Center for High-performance Computing (NCHC) and design and implement NFV resource Orchestrator - Linct Orchestrator, to monitor resource utilization and system status from NFVI and VNF, provide VNF load balancing and high availability module. This paper proposed Vector-Based VNF Deployment Mechanism for NFVI Load Balance (VBVD) mechanism, this mechanism will be calculated based on each NFVI current resource utilization, to choose the most appropriate NFVI and deploy VNF on it, in order to achieve load balancing for all NFVI in testbed and optimize the use of resources and avoid resources overloading for single NFVI.
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