Research On Functional Node Placement Of Virtual Network

The research of virtual network has become the main technology to expand and extend the computer network in the Internet era.The network technology and framework of its application can break through the problem of network exchange and realize network sharing flexibly by using network technology.Breaking through the limitations of the underlying infrastructure and effectively extending the network,it becomes the key technology of cloud computing end-to-end.The main significance of the research on virtual node placement is to improve the functional application of network virtualization by means of technology,so that the function of hardware devices which originally occupied more space can be transferred to software,so that the functions of hardware devices can be brought into full play.Through the application of NFV and other technologies,it lays a foundation for the transformation from Internet to Internet of things.The traditional Internet information connection needs hardware equipment and traffic assistance.Based on the virtual network to ensure the effective placement of virtual nodes can fully mobilize the network virtualization function to achieve the effective expansion of data information.First of all,the hardware equipment of the traditional basic network architecture is involved in the switch/router,so as to realize the virtual network compatibility and avoid the supplier monopolizing the supply chain to increase the cost budget.Add new function by developing virtual node placement technology.Secondly,enrich the software configuration to ensure the unified deployment of the later application control,explore the low cost software configuration technology on the basis of integrating the equipment provided by different suppliers,improve the utilization rate of the server,and realize the purpose of data information dynamic migration.Third,the application of virtual technology to relieve the application server resource occupation pressure,realize a server simultaneously running multiple virtual network service functions.The virtual node function placement is helpful for data migration and data loss is caused by signals that will not be interrupted suddenly.In a word,the development and exploration of virtual node placement technology is helpful to expand storage space,improve network application speed,realize virtual network capacity expansion in traditional basic network architecture,and solve the problem of hardware level.Enhance data center expansion ability,avoid vendor constraints,and reduce hardware procurement costs.The most important thing in the study of virtual network is to pay attention to the corresponding paths between virtual nodes and links,especially in the deployment of virtual network functional nodes,so as to ensure the mapping of virtual nodes and virtual links on the physical infrastructure.In order to reduce the cost of virtual network mapping,computing resources can be allocated effectively on the existing bandwidth requirements.This paper mainly studies basic virtual network,cross-domain virtual network mapping and reliability network mapping,and puts forward the corresponding calculation method according to the present situation and existing problems.Reduce the cost of mapping,virtual network mapping time,improve the quality of running services,build the corresponding virtual Network model.The innovation of this paper is to compare a variety of existing mapping algorithms and improve them.By comparing the total cost f-ormed by the virtual network function node mapping path,it is proved that the modified algorithm can optimize the virtual network function node placement.