Software defined optical networks （SDONs） integrate software defined technology with optical communication networks and represent the promising development trend of future optical networks. The key technologies for ...Software defined optical networks （SDONs） integrate software defined technology with optical communication networks and represent the promising development trend of future optical networks. The key technologies for SDONs include software-defined optical transmission, switching, and networking. The main features include control and transport separation, hard-ware universalization, protocol standardization, controllable optical network, and flexible optical network applications. This paper introduces software defined optical networks and its innovation environment, in terms of network architecture, protocol extension solution, experiment platform and typical applications. Batch testing has been conducted to evaluate the performance of this SDON testbed. The results show that the SDON testbed has good scalability in different sizes. Meanwhile, we notice that controller output bandwidth has great influence on lightpath setup delay.展开更多
As internet services newly emerge with diversity and complexity, great challenges and demands are presented to the Open Flow controlled software defined optical networks(SDON) to achieve better match between services ...As internet services newly emerge with diversity and complexity, great challenges and demands are presented to the Open Flow controlled software defined optical networks(SDON) to achieve better match between services and SDON. With this aim, this paper proposes a naive Echo-State-Network(Naive-ESN) based services awareness algorithm of the software defined optical network, where the naive ESN model adopts the ring topology structure and generates the probability output result to determine the Qo S policy of SDON. Moreover, the Naive-ESN engine is also designed in controller node of SDON to perform services awareness by obtaining service traffic features from data plan, together with some necessary extension of the Open Flow protocol. Test results show that the proposed approach is able to improved services-oriented supporting ability of SDON.展开更多
针对网络信息通信能力方面存在的不足,提出一种改进型软件定义网络(software defined network,SDN)控制器的网络安全通信技术研究方法。在网络布局中安装SDN控制器,以提高网络数据信息布局能力;通过改进型权关联图模型对提取到的数据信...针对网络信息通信能力方面存在的不足,提出一种改进型软件定义网络(software defined network,SDN)控制器的网络安全通信技术研究方法。在网络布局中安装SDN控制器,以提高网络数据信息布局能力;通过改进型权关联图模型对提取到的数据信息进行处理,利用用户行为数据中的加权图建立数据上下网络节点的关联关系;利用自动交换光网络技术,提高网络数据信息通信能力。试验结果表明,所提方法网络安全通信传输速率快,分类准确率高,最大可达到1。所提方法在提高SDN控制器的网络安全通信方面具有良好的效果和潜力。展开更多
随着通信技术的不断升级和高速带宽技术的持续发展,人们对光纤通信的功能要求越来越高,在确保其具备扩展性、灵活性特征的基础上,能够实现超高速、大容量传送功能,同时还要实现向智能化的转变。通过概述大数据技术与软件定义网络(Softwa...随着通信技术的不断升级和高速带宽技术的持续发展,人们对光纤通信的功能要求越来越高,在确保其具备扩展性、灵活性特征的基础上,能够实现超高速、大容量传送功能,同时还要实现向智能化的转变。通过概述大数据技术与软件定义网络(Software Defined Network,SDN)技术,分析光纤通信网络的现状及其在大数据背景下的发展趋势,对由SDN发展而来的软件定义光网络(Software Defined Optical Networks,SDON)技术在光纤通信领域的应用进行探讨,从而为光纤通信领域的长久发展奠定基础。展开更多
随着信息技术的迅速发展,光传送网作为信息传输的重要基础设施,面临着巨大的挑战和机遇。传统的光传送网架构复杂、管理困难,难以满足日益增长的业务需求。软件定义网络(Software Defined Network,SDN)技术的出现,为光传送网的发展带来...随着信息技术的迅速发展,光传送网作为信息传输的重要基础设施,面临着巨大的挑战和机遇。传统的光传送网架构复杂、管理困难,难以满足日益增长的业务需求。软件定义网络(Software Defined Network,SDN)技术的出现,为光传送网的发展带来新的机遇。文章介绍SDN技术的基本概念与特点,分析SDN在光传送网中的优势,详细阐述SDN技术下的光传送网架构设计,包括控制架构、南北向协议构建设计以及标准化进展与潜在应用。通过此研究,旨在为光传送网的未来发展提供新的思路和方法。展开更多
在核电站的光纤通信网络中,冗余设计能保障系统可靠性和数据传输稳定性。软件定义网络(Software Defined Network,SDN)技术将控制平面与数据平面分离,提供了高度灵活的网络管理能力。深入探讨了SDN技术在核电站冗余光纤通信网络中的应用...在核电站的光纤通信网络中,冗余设计能保障系统可靠性和数据传输稳定性。软件定义网络(Software Defined Network,SDN)技术将控制平面与数据平面分离,提供了高度灵活的网络管理能力。深入探讨了SDN技术在核电站冗余光纤通信网络中的应用,阐述SDN技术的基本原理,并设计核电站光纤通信组网方案。同时,详细分析了OpenFlow交换机结构、简单网络管理协议(Simple Network Management Protocol,SNMP)以及集群技术SDN控制方案对网络性能的影响。最后,通过实验验证基于SDN技术的网络在故障恢复、流量调度、资源利用方面的优势。展开更多
基金supported by ZTE Industry-Academia-Research Cooperation Funds under Grant No.Surrey-Ref-9953
文摘Software defined optical networks （SDONs） integrate software defined technology with optical communication networks and represent the promising development trend of future optical networks. The key technologies for SDONs include software-defined optical transmission, switching, and networking. The main features include control and transport separation, hard-ware universalization, protocol standardization, controllable optical network, and flexible optical network applications. This paper introduces software defined optical networks and its innovation environment, in terms of network architecture, protocol extension solution, experiment platform and typical applications. Batch testing has been conducted to evaluate the performance of this SDON testbed. The results show that the SDON testbed has good scalability in different sizes. Meanwhile, we notice that controller output bandwidth has great influence on lightpath setup delay.
基金supported by the Science and Technology Project of State Grid Corporation of China:“Research on the Power-Grid Services Oriented “IP+Optical” Coordination Choreography Technology”.
文摘As internet services newly emerge with diversity and complexity, great challenges and demands are presented to the Open Flow controlled software defined optical networks(SDON) to achieve better match between services and SDON. With this aim, this paper proposes a naive Echo-State-Network(Naive-ESN) based services awareness algorithm of the software defined optical network, where the naive ESN model adopts the ring topology structure and generates the probability output result to determine the Qo S policy of SDON. Moreover, the Naive-ESN engine is also designed in controller node of SDON to perform services awareness by obtaining service traffic features from data plan, together with some necessary extension of the Open Flow protocol. Test results show that the proposed approach is able to improved services-oriented supporting ability of SDON.
文摘针对网络信息通信能力方面存在的不足,提出一种改进型软件定义网络(software defined network,SDN)控制器的网络安全通信技术研究方法。在网络布局中安装SDN控制器,以提高网络数据信息布局能力;通过改进型权关联图模型对提取到的数据信息进行处理,利用用户行为数据中的加权图建立数据上下网络节点的关联关系;利用自动交换光网络技术,提高网络数据信息通信能力。试验结果表明,所提方法网络安全通信传输速率快,分类准确率高,最大可达到1。所提方法在提高SDN控制器的网络安全通信方面具有良好的效果和潜力。
文摘随着通信技术的不断升级和高速带宽技术的持续发展,人们对光纤通信的功能要求越来越高,在确保其具备扩展性、灵活性特征的基础上,能够实现超高速、大容量传送功能,同时还要实现向智能化的转变。通过概述大数据技术与软件定义网络(Software Defined Network,SDN)技术,分析光纤通信网络的现状及其在大数据背景下的发展趋势,对由SDN发展而来的软件定义光网络(Software Defined Optical Networks,SDON)技术在光纤通信领域的应用进行探讨,从而为光纤通信领域的长久发展奠定基础。
文摘随着信息技术的迅速发展,光传送网作为信息传输的重要基础设施,面临着巨大的挑战和机遇。传统的光传送网架构复杂、管理困难,难以满足日益增长的业务需求。软件定义网络(Software Defined Network,SDN)技术的出现,为光传送网的发展带来新的机遇。文章介绍SDN技术的基本概念与特点,分析SDN在光传送网中的优势,详细阐述SDN技术下的光传送网架构设计,包括控制架构、南北向协议构建设计以及标准化进展与潜在应用。通过此研究,旨在为光传送网的未来发展提供新的思路和方法。
