Design And Implementation Of SDN Network System Expansion Strategy

The IT trend of communication services drives the demand of the architecture transformation of communication service system.The traditional network system mainly adopts the centralized system structure,supports user scalability through"domain expansion" mechanism,through the design and implementation of physical backup availability characteristics such as disaster recovery,construction cost and service system in the early high maintenance cost is high.With the development of cloud computing,network function virtualization technology,using distributed technology to build a communication service system has become the new direction of the operators.In this thesis,the distributed communication services distributed architecture and implementation based on MQTT protocol are studied based on the protocol "fusion communication protocol optimization and cloud research".The main problems solved in this paper are as follows:1 design the architecture and typical business logic of the conversation class service in SDN network environment.2 according to the consistency of each controller state within the cluster SDN relay controller cluster in distributed environment,proposes a Paxos algorithm using server state consistency Zookeeper storage scheme based on cluster architecture.3 based on the characteristics of SDN real-time session service,this paper designs a SDN repeater routing forwarding mode based on RPC mechanism.4 based on the characteristics of SDN real-time session service,a new load balancing algorithm based on feedback mechanism is proposed.The test results show that,this paper introduces the design and implementation of session service functions and operation effect of SDN based on the network environment to meet the application requirements of the project,can support a large amount of data,the stable connection needs high concurrency.