摘要
现有SDICN(软件定义信息中心网络)技术方案难以支持海量内容分发、交换和缓存组件的分别升级。文章提出一种基于覆盖网络的SDICN系统架构,由网络边缘的缓存节点转发内容请求和缓存内容数据,缓存与交换不再耦合,克服了现有技术方案的上述局限;基于SDN(软件定义网络)的集中式控制,避免了覆盖网络系统的次优控制问题。原型系统实验分析表明,所提系统可直接运行于通常的SDN中,少量的边缘节点即可有效减少内容分发响应时间。研究结果有利于SDN和ICN(信息中心网络)技术的扩展及应用。
Existing proposals of Software-Defined Information-Centric Networking(SDICN)are difficult to support massive content delivery and to enable respective updates of switching and buffering components.This motivates us to propose an overlay-based SDICN system,in which content request forwarding and caching run only at the edge cache nodes.Decoupling caching from switching relaxes the above limitations of the existing proposals.Centralized control derived from software-defined networking overcomes the sub-optimality problem with overlay mechanisms.Experiments based on our prototype show that the system can be naturally superposed upon a software-defined network with significant reduction of response time when a few number of cache nodes are deployed.Our results are beneficial for the extension and application of software-defined networking and information-centric networking.
出处
《光通信研究》
北大核心
2016年第2期4-6,18,共4页
Study on Optical Communications
基金
华中科技大学自主创新研究基金资助项目(2014QN154)
关键词
信息中心网络
软件定义网络
边缘缓存
集中式控制
information-centric networking
soft-defined networking
edge caching
centralized control
