Design And Implementation Of A Dynamic Service Function Chain Orchestrating System Based On NFV/SDN

Today's network scale is rapidly expanding,and traditional static networks cannot meet the rapidly increasing demand for network services.How to provide network services more flexibly and efficiently has gradually become the focus of research.The dynamic service function chain can efficiently schedules resources,and flexibly and quickly adjusts and deploys the network function on demand,providing solutions and efficient solutions to the above problems.According to the advantages and characteristics of the dynamic service function chain,this article introduces network function virtualization and software-defined network technology to build a system that realizes the management and orchestration of the dynamic service function chain,the network resource virtualization and network function orchestration capabilities provided by NFV,and the unique control of SDN The network structure separated from forwarding provides important technical support for the realization of dynamic SFC.The combination of NFV and SDN can reduce resource scheduling costs and more fine-grained on-demand orchestration of service functions.This article first starts with the technical background and realization significance of the arrangement and management of the dynamic service function chain,and analyzes and summarizes the realization schemes and research results proposed by the current developers.According to the realization goal of this system,an dynamic SFC orchestration management architecture combining NFV orchestration architecture and the idea of separating the SDN control layer from the forwarding layer is designed.and the system is divided into functional modules according to the relationship between the orchestration,control,and data planes.Design the interaction between the modules,In terms of function realization process,key class diagram design,module interface design,etc.,perform a more specific and detailed decomposition of the system function realization.Finally,design test cases for the main functional modules of the system to verify the realization effect of the system functions,and summarize and reflect on the work carried out by the system based on this article.