摘要
为提高虚拟网络请求接受率,针对物理节点负载不均衡的问题,提出一种面向节点负载均衡的虚拟网络重构算法。根据物理节点的平均可用计算资源和最小可用计算资源,设置一个阈值,对超过阈值的物理节点进行重配置,动态地选择需要迁移的虚拟节点,在均衡物理节点负载的情况下,尽可能地减少虚拟节点的迁移数量。仿真结果表明,所提方法均衡了物理节点负载,提高了物理网络资源利用率和虚拟网络请求接受率。
In order to improve the acceptance ratio of virtual network embedding,this paper proposed a virtual network reconfiguration algorithm based on nodes load balancing,which aims to overcome the problem of physical network nodes imbalance.The algorithm sets a threshold based on available and minimal physical nodes resource,resets the physical nodes which exceed the threshold,and formulates a flexible strategy for selecting virtual nodes on the reconfi-gured physical nodes.The method reduces the number of migrated virtual nodes in case of balancing physical nodes load.The simulation results show that the method balances physical nodes load,and improves the acceptance ratio of virtual network request and the utilization rate of physical network resource.
作者
李振涛
孟相如
赵志远
苏玉泽
LI Zhen-tao;MENG Xiang-ru;ZHAO Zhi-yuan;SU Yu-ze(Information and Navigation Institute,Air Force Engineering University,Xi’an 710077,China)
出处
《计算机科学》
CSCD
北大核心
2018年第7期95-98,121,共5页
Computer Science
基金
国家自然科学基金(61401499)资助
关键词
网络虚拟化
虚拟网络
重构
节点负载均衡
Network virtualization
Virtual network
Reconfiguration
Nodes load balancing
