一种生存性军事虚拟网络映射新方法

针对生存性的军事虚拟网络映射问题,提出了生存性的军事虚拟网络映射需要遵循的原则。构建了虚拟网络映射模型,并采用蝙蝠算法进行求解。针对故障情况,提出了区分服务的故障恢复策略,对于高优先级虚网请求提前构建保护路径,对于低优先级虚网请求则提出基于链路可靠性的故障迁移算法,为了减少带宽消耗适当考虑了节点迁移策略。最后通过仿真验证了算法在虚拟网络运行成功率、故障修复率和链路利用率方面相比其他算法具有更好的性能。

A new approach for survivable military virtual network mapping

For the survivable military virtual network mapping problem,the principle of the problem is presented. A virtual network mapping model is built,and it is solved by bat algorithm. In view to fault environment,a fault recovery policy based on differ-service is proposed. The failed link is replaced by a protect path for high priority virtual network request,and fault transfer algorithm based on link reliability for low priority virtual network request. In order to decrease bandwidth consumption,node transfer policy is properly considered. Finally the performance of the policy is evaluated by simulation experiments and the results demonstrate the policy has better performance in the aspect of virtual network success running ratio,failure repairing ratio,and link resource utilization.