面向云计算数据中心的光互连网络架构与路由设计

项目名称： 面向云计算数据中心的光互连网络架构与路由设计

项目编号： No.61301119

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 蔡岳平

作者单位： 重庆大学

项目金额： 25万元

中文摘要： 为满足日益增长的数据密集型服务与应用的发展，云计算通过统一管理和调度由网络连接的计算资源，为用户提供虚拟的计算、存储和网络等服务。数据中心网络是云计算数据中心内互连大规模服务器，实现海量数据传输和交换的基础平台。针对传统电交换数据中心网络存在：等分带宽小、可扩展性差、成本和能耗高、流量路由效率低等问题，本项目研究面向云计算数据中心的光互连网络架构与路由设计，提出新型的二层光互连数据中心网络架构。连接相近服务器的集群内光互连网络混合使用光波分复用路由和以太网技术能够提供高速分组交换。服务器集群间主干光互连网络利用多波长光源和灵活栅格光网络技术提供可变带宽的光通道。本项目还通过对数据中心流量特性的分析，采用对流量矩阵进行概率密度函数估计的方法，提出融合流量无视路由和流量具体路由的新型路由机制和算法。本项目的研究成果为设计高性能、高吞吐量、高可扩展的绿色"云化"网络平台提供基础理论和关键技术。

中文关键词： 数据中心网络；光互连网络；路由与调度；软件定义网络；内容中心网络

英文摘要： With the rapid development of data-intensive services and applications, cloud computing is employed to provide virtualized computing, storage and network services, through the centralized management and scheduling of networked computing resources. Data center networks (DCNs) interconnect thousands of servers inside the data center for transporting and switching high volumes of data among servers. Traditional DCNs are based on electronic switching fabrics and have the following problems: low bisectional bandwidth, poor scalability, high cost and power consumption, long packet delay, inefficient routing schemes and so on. Optical technology has been adopted in DCNs due to its high bandwidth capacity. However, current optical DCN solutions still have the problems such as: (1) Optical circuit switching (OCS) based proposals suffer from the relatively long path setup and switching delay in tens of milliseconds, which is not suitable for bursty traffic; in addition, traditional OCS networks follow the fixed coarse wavelength grids, which results in low spectrum utilization efficiency and poor network performance; (2) Optical packet switching (OPS) based proposals require complex buffer congestion managements or expensive optical components due to the lack of optical memories; (3) Hybrid optical switching based proposa

英文关键词： data center networking；optical interconnection networks；routing and scheduling；software defined networking；content-centric networking