一种保证NFV可靠性的最优备份拓扑生成方法

发布时间：2018-04-24 04:23

本文选题：网络功能虚拟化 + 服务功能链　；参考：《计算机应用研究》2017年11期

【摘要】：网络功能虚拟化(NFV)将服务功能链(SFC)映射到底层网络时,与传统的虚拟网络一样,会存在可靠性问题。针对NFV环境中的单链路故障,在考虑SFC拓扑设计和映射的基础上添加备份拓扑提高可靠性,再进一步简化备份拓扑,减少资源消耗。按照服务路径是否可分离,提出了两种最优备份拓扑的生成算法。仿真结果表明,最优备份拓扑在提高可靠性的基础上能够有效地减少备份带宽资源的消耗,提高资源利用率。
[Abstract]:When network function virtualization (NFV) maps the service function chain (SFC) to the underlying network, there will be reliability problems similar to the traditional virtual network. In view of single link failure in NFV environment, adding backup topology to improve reliability, further simplify backup topology and reduce resource consumption on the basis of considering SFC topology design and mapping. According to whether the service path is separable, two algorithms for generating optimal backup topology are proposed. The simulation results show that the optimal backup topology can effectively reduce the consumption of backup bandwidth resources and improve resource utilization on the basis of improving reliability.
【作者单位】：国家数字交换系统工程技术研究中心;
【基金】：国家“973”计划资助项目(2012CB315901,2013CB329104) 国家自然科学基金资助项目(61309019,61372121) 国家“863”计划资助项目(2013AA013505,2015AA016102)
【分类号】：TP393.02

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