Research On Dynamic Collabo-Rative Scheduling Mechanism Of Muti-level And Muti-domain Architecture Based On Sdn

The main purpose of this paper is to solve the problem of routing and load balancing based on software-defined networks under large-scale network architecture..Based on the previous research,a dynamic traffic scheduling mechanism based on multi-level and multi-domain architecture is proposed.The research and design consists of multiple parts,mainly designing and optimizing the traffic scheduling strategy for a specific layered architecture,and considering the deployment scenarios of large-scale network scenarios in multiple control domains,so the design and innovation points involved.There are many aspects,and there are more innovations than traditional routing and centralized scenarios.Summarized as the following:In order to solve the problem of large-scale network load balancing,this paper adopts a hierarchical multilevel and multi-domain routing architecture.The application of hierarchical routing architecture can reasonably perform load distribution and traffic scheduling,avoiding the performance bottleneck of a single control domain.In terms of routing architecture,there are mainly single control domain and multiple control domain architectures.The multiple control domains are divided into flat centralized and hierarchical routing architectures.The centralized architecture is difficult to meet frequent forwarding request messages and network statistics.Processing requirements.Most of the existing traffic scheduling policies cannot be dynamically adjusted according to the changes of multiple domain network states and traffic distributions.This paper adopts an intra-domain inter-domain coordination scheduling mechanism,which is based on link load status and traffic distribution.And routing and dynamic adjustment according to different strategies in the domain,improving the average link utilization and throughput of multiple domain networks,optimizing network delay,and reducing path computation complexity.When the number of control domains increases,the management scale and request delay of each domain become one of the problems that limit network performance.How to divide the area and determine how to deploy multiple control domains becomes the decisive factor for improving performance.In this paper,the cluster-based deployment scheme is used to optimize the iteration according to the load and delay,and the minimum delay is used as the determinant.Finally,the optimal solution for multi-level and multi-domain architecture deployment is determined,and the load between the domains is balanced and reduced the effect of delay.