Research And Implementation Of Inter-domain Routing Optimization And Fast Rerouting For Data Center Network

As the Internet economy continues to grow and the size of data center clusters continues to increase,the requirements for inter-domain data center communication quality are getting higher and higher.However,current inter-domain data center routing approaches have some drawbacks that greatly affect the performance of applications such as high-performance computing.For inter-domain data center routing,the current inter-domain routing approach lacks awareness of intra-domain information and remote autonomous system’s information,uses only inter-domain information for a single decision,and tends to select paths that pass through a small number of autonomous systems but are too long in distance,making the inter-domain communication latency too high.For intra-domain data center routing,the widely used routing method is equal-cost multi-path routing based on five-tuple hashing,which can easily cause congestion and affect application throughput when the number of parallel traffic increases.Therefore,there is an increasingly urgent need to implement a set of optimization methods that act in inter-domain data center scenarios and can solve both inter-domain and intra-domain routing problems.To address the above issues,this paper proposes a inter-domain routing optimization mechanism and a fast rerouting algorithm.For inter-domain routing,based on the idea of software-defined WAN,a controller is deployed in each autonomous domain,and after collecting the intra-domain routing information that has changed,a routing announcement is made in a flooding manner,and the information is consolidated based on the convergence results to achieve multidimensional routing decisions.For intra-domain routing,network tracing techniques are used to monitor the connection establishment phase,and then the network state is sensed in advance by sending probe packets,and the algorithm is used to make congestion judgments and find available paths to achieve fast rerouting.In addition,the paper develops a data center routing optimize system based on the above research work.Firstly,the main problems in inter-domain data center routing are analyzed and the requirements of the system are described in detail;secondly,the overall architecture and functional module division of the system are outlined and the database table structure is clarified;thirdly,the workflow of each functional module and the interaction process in the system are analyzed in detail;finally,the development and testing of the system are completed.Experiments show that the solutions proposed in this paper can optimize the decision method of inter-domain data center routing,select the path with lower delay or shorter distance according to user requirements,and at the same time,the congestion caused by routing in the data center can be quickly sensed and quickly recovered by rerouting,which effectively improves the quality of communication and the performance of applications.