基于能耗的虚拟路由器转发实例动态迁移机制研究

STUDY OF DYNAMIC MIGRATION MECHANISM OF VIRTUAL ROUTER FORWARDING INSTANCE BASED ON ENERGY CONSUMPTION

虚拟路由器平台是支撑网络虚拟化技术的关键网络设备。传统的虚拟路由器平台存在着物理资源利用率低,能耗损失严重等问题。现有的节能机制大多是通过虚拟路由器平台间的虚拟路由器实例动态迁移来降低能耗,并未有学者研究平台内部虚拟路由器实例动态迁移对能耗的影响。提出一种基于能耗的虚拟路由器转发实例动态迁移算法。该算法将转发实例动态迁移到更少的物理服务器,调整平台内部的转发实例与物理服务器之间的映射关系,关闭空闲服务器。实验表明,该算法能够提高虚拟路由器平台的物理资源利用率,降低平台总能耗。

Virtual router platform is the key network equipment to support network virtualizat ion technology. Traditional virtual router platform is criticized low physical resource utilization and serious loss of energy consumption problems. Most of the existing energy-saving mechanism is achieved through live dynamic migration of virtual router instance between virtual router platforms, few scholars study the dynamic migration of virtual router instances inside the platform. This paper presents a dynamic migration algorithm of virtual router forwarding instance inside the virtual router platform based on power saving. The algorithm dynamically migrates forwarding instance to fewer physical servers, adjust mapping between forwarding instance and physical servers inside platform, and close down idle physical servers. Our experiment results show that the algorithm can effectively improve resource utilization of physical servers and reduce the energy consumption of the virtual router platform.