基于改进引力搜索算法的交换机迁移策略

发布时间：2018-04-18 12:08

本文选题：软件定义网络 + 多控制器　；参考：《计算机应用》2017年05期

【摘要】：针对多控制器软件定义网络(SDN)中交换机迁移策略迁移代价衡量单一,不能适应交换机流量的变化的情况,提出基于改进引力搜索算法的交换机迁移策略(IGS-SMS)。在决策阶段,应用基于模糊满意度的多目标决策方法,优化目标根据隶属度大小竞争优先权;在计算阶段,通过改进引力搜索算法优化优先权高的目标函数。实验结果表明,IGS-SMS在实现负载均衡的同时,能保证传输时延与交换机重分配的指标;在实验中,当局部负载较重时,动态迁移算法(DSMA)和基于改进型拍卖交换机迁移机制(PASMM)不能缓解控制器过载,而IGS-SMS执行后无控制器过载,且负载均衡度小于DSMA和PASMM。
[Abstract]:In view of the fact that the transfer cost of switch migration strategy in SDN defined by multi-controller software is single and unable to adapt to the change of switch traffic, a switch migration strategy based on improved gravity search algorithm is proposed.In the decision-making stage, the multi-objective decision-making method based on fuzzy satisfaction is applied to optimize the objective competitive priority according to the size of membership, and in the calculation stage, the improved gravitational search algorithm is used to optimize the objective function with high priority.The experimental results show that IGS-SMS not only realizes load balancing, but also ensures transmission delay and switch redistribution.The dynamic migration algorithm (DSMA) and the migration mechanism based on the improved auction switch (PASMMM) can not alleviate the overload of the controller, but there is no overload of the controller after the implementation of IGS-SMS, and the load balancing degree is smaller than that of DSMA and PASM.
【作者单位】：空军工程大学防空反导学院;
【分类号】：TN915.05;TP18

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