SDN Control Platform Scheme And Application For Cloud-network Integration

As an important foundation for the transformation and development of the digital economy,the construction of a new generation of information infrastructure has become the core element of the sustainable and high-quality development of our society.The traditional network architecture has the following problems:insufficient flexibility in resource scheduling and allocation,The deployment and deployment of new applications are slow,and the requirements for network operation and maintenance are high.Therefore,how to seamlessly connect the network to the cloud platform and support the business application model under the micro-service architecture is the challenge faced in the process of cloud-network integration.Based on resource virtualization technology and software-defined network technology,cloudnetwork integration aims to realize agile connection and on-demand interconnection of network and cloud resources,improve resource utilization and realize flexible networking.This paper mainly studies SDN for cloudnetwork integration.The control platform scheme,the specific content is as follows:(1)Investigate the research progress of cloud-network integration and related technologies of control platform,and design an SDN control platform architecture for cloud-network integration based on the requirements of cloudnetwork integration control platform.Based on the platform architecture,a control platform scheme is further proposed.The functional modules involved in the scheme are:application and analysis platform,global service orchestration,network controller,and cloud resource orchestrator.At the same time,the scheme is carried out from three aspects:virtualization and container orchestrator design,virtual switch and network controller design,distributed cluster construction and networking implementation scheme design,and realizes the integration of computing networking,resource allocation,monitoring and management functions.(2)Based on the control platform scheme,the construction of the platform cluster is completed,and the functions of platform network control and resource arrangement are realized at the same time.The infrastructure layer uses the relevant hardware resources to complete the construction of the underlying network architecture,and the control and orchestration layer uses the Tungsten Fabric controller and the Kubernetes resource orchestrator to complete network control and resource orchestration respectively.The network control function mainly involves the composition and communication of the network controller,the realization of the network switching node and the dynamic construction of the network.The realization of the resource orchestration function mainly involves the composition and communication of the container orchestrator and the creation and scheduling process of platform services.Finally,a QoS Queue Mapping Mechanism for cloud-network integration is proposed,which uses the controller to break down the barriers between different levels,so that the platform can coordinate and schedule cloud resources and network resources at the same time to ensure the QoS requirements of users.(3)According to the SDN control platform solution for cloud-network integration,build a test environment to test the basic performance of the platform,including throughput,delay,jitter and other performance.The experimental results show that the throughput of different packet lengths can be maintained above 900Mbps,the delay is maintained at about 50μs,and the OVS jitter is stable at 2.8μs to 3.6μs,indicating that the cloud-network fusion control platform can reach the commercial level.Then,based on the platform,the QoS mechanism for cloud-network integration is verified,and experiments are used to test the QoS priority configuration and queue speed limit.Finally,in order to meet the user’s requirements for bounded delay and low jitter,the TSN network and SDN network are used for joint networking in the platform,and the transmission of AVB video streams are tested.Experiments show that the TSN gating configuration can significantly improve the delay and jitter indicators of video streaming,and the control platform can fully provide users with stable audio and video services and reliable service guarantees.