基于Mininet的LRMC QoS路由算法仿真研究

Simulation Research on LRMC QoS Routing Algorithm Based on Mininet

软件定义网络(Software-Defined Networking,SDN)使得网络功能可以由控制层以软件编程形式实现并下发给数据转发层的交换机执行,提高网络控制灵活性的同时也增加了硬件成本。针对传统网络架构因数据业务多样化导致的网络构建成本高、多类型业务(Quality of service,QoS)无法得到有效保障的问题,提出了一种可满足多类型业务QoS的动态自适应路由算法-拉格朗日松弛多约束(Lagrangian Relaxation based Multiple Constains,LRMC)QoS路由算法,在Mininet仿真网络中部署实现。利用Mininet CLI等功能对LRMC多约束QoS路由算法进行仿真对比试验。仿真结果参数表明,上述算法在连通时间收敛性及性能上均表现出明显优势。

The application of Software-Defined Networking(SDN)enables network functions to be implemented by the control layer in the form of dynamic software and delivered to the SDN switch for execution,which improves the flexibility of network control and also increases hardware costs.In view of the inconvenience caused by the high cost of SDN switches and the small number of types,the Mininet system was used to simulate the SDN network.Aiming at the problem of high network construction cost and ineffective guarantee of qualityof services Quality of service(QoS)caused by the diversification of data services in the traditional network architecture,a dynamic adaptive routing algorithm,the Lagrangian Relaxation based Multiple Constains(LRMC)QoS routing algorithm that can meet the QoS of multiple types of services,was proposed and implemented in the mininet simulation network.Mininet CLI and other functions were used to simulate and compare the LRMC multi-constrained QoS routing algorithm.Simulation results show that the algorithm has obvious advantages in connection time convergence and performance.