针对当前互联网中存在的2个亟待解决的问题:OTT(over the top)流量占用大量网络带宽以及信息高度冗余,提出了一种具有差异化服务能力的未来网络体系架构——服务定制网络(SCN,service customized networking)。SCN基于软件定义网络设计...针对当前互联网中存在的2个亟待解决的问题:OTT(over the top)流量占用大量网络带宽以及信息高度冗余,提出了一种具有差异化服务能力的未来网络体系架构——服务定制网络(SCN,service customized networking)。SCN基于软件定义网络设计,继承了其数据控制分离以及网络可编程的主要特点,并针对当前互联网中的问题,增加了网络虚拟化能力以及内容智能调度能力。通过构建具有不同等级服务能力的虚拟网络,SCN可以避免OTT业务大量占用带宽。同时,通过信息资源智能有序调度,SCN可以消减信息冗余。在小规模真实网络平台上进行的实验结果表明,SCN确实具备为不同用户提供差异化服务能力以及有效减少信息冗余的能力。展开更多
Traditional networks face many challenges due to the diversity of applications,such as cloud computing,Internet of Things,and the industrial Internet.Future Internet needs to address these challenges to improve networ...Traditional networks face many challenges due to the diversity of applications,such as cloud computing,Internet of Things,and the industrial Internet.Future Internet needs to address these challenges to improve network scalability,security,mobility,and quality of service.In this work,we survey the recently proposed architectures and the emerging technologies that meet these new demands.Some cases for these architectures and technologies are also presented.We propose an integrated framework called the service customized network which combines the strength of current architectures,and discuss some of the open challenges and opportunities for future Internet.We hope that this work can help readers quickly understand the problems and challenges in the current research and serves as a guide and motivation for future network research.展开更多
在IP网络中,虚拟机跨子网迁移后其网络地址发生了变化,将面临IP移动性问题。主要研究如何在未来网络体系结构—XIA(expressive internet architecture)中解决这一问题。利用XIA中标识与地址分离、基于DAG(directed acyclic graphs)的灵...在IP网络中,虚拟机跨子网迁移后其网络地址发生了变化,将面临IP移动性问题。主要研究如何在未来网络体系结构—XIA(expressive internet architecture)中解决这一问题。利用XIA中标识与地址分离、基于DAG(directed acyclic graphs)的灵活路由等特性,提出了基于集合点代理的虚拟机在线迁移方法,并进行了具体实现和实验验证。结果表明,所提出的方法可满足虚拟机迁移后与通信对端网络连接的快速恢复,并具备控制平面简单和数据平面高效的优点。展开更多
文摘针对当前互联网中存在的2个亟待解决的问题:OTT(over the top)流量占用大量网络带宽以及信息高度冗余,提出了一种具有差异化服务能力的未来网络体系架构——服务定制网络(SCN,service customized networking)。SCN基于软件定义网络设计,继承了其数据控制分离以及网络可编程的主要特点,并针对当前互联网中的问题,增加了网络虚拟化能力以及内容智能调度能力。通过构建具有不同等级服务能力的虚拟网络,SCN可以避免OTT业务大量占用带宽。同时,通过信息资源智能有序调度,SCN可以消减信息冗余。在小规模真实网络平台上进行的实验结果表明,SCN确实具备为不同用户提供差异化服务能力以及有效减少信息冗余的能力。
基金the National Natural Science Foundation of China(No.61872401)Program of the CETC Key Laboratory of Aerospace Information Applications,China(No.SXX18629T022)the Industrial Internet Innovation and Development Project 2018 from the Ministry of Industry and Information Technology of China。
文摘Traditional networks face many challenges due to the diversity of applications,such as cloud computing,Internet of Things,and the industrial Internet.Future Internet needs to address these challenges to improve network scalability,security,mobility,and quality of service.In this work,we survey the recently proposed architectures and the emerging technologies that meet these new demands.Some cases for these architectures and technologies are also presented.We propose an integrated framework called the service customized network which combines the strength of current architectures,and discuss some of the open challenges and opportunities for future Internet.We hope that this work can help readers quickly understand the problems and challenges in the current research and serves as a guide and motivation for future network research.
文摘单层用户交换平台体系结构(Single-layer User-data switching Platform Architecture,SUPA)是基于面向以太网的物理帧时槽交换(Ethernet-oriented Physical Frame Timeslot Switching,EPFTS)技术的一种未来Internet体系结构。研究了SUPA用户平台的OAM(Operation and Management or Operation,Administration and Maintenance)机制,以支持SUPANET域内的连通性诊断、故障诊断和故障恢复等功能。基于SUPA虚线路交换(Virtual Line Switc-hing,VLS)服务,重点研究了基于OAM的保护交换机制。最后,基于QVL(QoS Virtual Line)和SVL(Shared VirtualLine)服务,仿真比较了SUPA用户平台中基于OAM的故障恢复的保护效果,验证了基于QVL的保护交换比基于SVL的保护交换具有更好的QoS保障能力。
文摘在IP网络中,虚拟机跨子网迁移后其网络地址发生了变化,将面临IP移动性问题。主要研究如何在未来网络体系结构—XIA(expressive internet architecture)中解决这一问题。利用XIA中标识与地址分离、基于DAG(directed acyclic graphs)的灵活路由等特性,提出了基于集合点代理的虚拟机在线迁移方法,并进行了具体实现和实验验证。结果表明,所提出的方法可满足虚拟机迁移后与通信对端网络连接的快速恢复,并具备控制平面简单和数据平面高效的优点。
