面向多节点故障的生存性虚拟网络映射方法  

Virtual network embedding approach to survive multiple node failures

作　　者：肖蔼玲 王颖[1] 孟洛明[1] 邱雪松[1] 李文璟[1] 

机构地区：[1]北京邮电大学网络与交换技术国家重点实验室,北京100876

出　　处：《通信学报》2015年第4期81-88,共8页Journal on Communications

基　　金：国家高技术研究发展计划("863"计划)基金资助项目(2013AA013502);中央高校基本科研业务费专项基金资助项目(BUPT-2013RC1103);国家科技支撑计划课题基金资助项目(2012BAH35F02)~~

摘　　要：针对网络虚拟化环境中虚拟网络的生存性问题,提出一种面向多节点故障的生存性虚拟网络映射方法。该方法预先在物理网络中按比例留出备份资源并根据拓扑属性构造节点的候选集合,在发生节点故障后从故障节点的候选集合中选取重映射目标并动态分配预留的备用资源来恢复受到影响的虚拟网络,提高长期运营利润。仿真实验在多节点故障模型下从适用性、稳定性及性能方面验证了该方法的有效性。Considering the survivability of virtual networks in a network virtualization environment, a virtual network embedding approach was proposed to survive multiple node failures. It de backups proportionally in the substrate net- work and constructed a candidate set for each substrate node beforehand. To increase the long term business profit, it chosen the failover targets in the candidate set and dynamically allocates backups to recover the affected virtual networks after substrate node failures. The validity of this method is assessed by simulation experiments in terms of applicability, stability and performance under a multiple node failures model.

关 键 词：网络虚拟化 生存性虚拟网络映射 多节点故障 故障恢复 虚拟网络重映射 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]