随着云计算、物联网等新兴技术的不断发展,传统企业网络已经无法满足大规模数据传输和处理的需求。软件定义广域网络(Software-Defined networking in a Wide Area Network,SD-WAN)作为一种新型的企业网络架构方案,具有较高的可扩展性...随着云计算、物联网等新兴技术的不断发展,传统企业网络已经无法满足大规模数据传输和处理的需求。软件定义广域网络(Software-Defined networking in a Wide Area Network,SD-WAN)作为一种新型的企业网络架构方案,具有较高的可扩展性、灵活性和可管理性,成为企业网络升级的重要选择。通过对SD-WAN技术在不同企业组网中的应用和SD-WAN网络设计关键技术的介绍,深入剖析其优势和特点,并分析SD-WAN应用过程面临的挑战和解决方案,探讨未来SD-WAN技术的趋势和发展方向。展开更多
When applying Software-Defined Networks(SDN) to WANs,the SDN flexibility enables the cross-domain control to achieve a better control scalability.However,the control consistence is required by all the cross-domain ser...When applying Software-Defined Networks(SDN) to WANs,the SDN flexibility enables the cross-domain control to achieve a better control scalability.However,the control consistence is required by all the cross-domain services,to ensure the data plane configured in consensus for different domains.Such consistence process is complicated by potential failure and errors of WANs.In this paper,we propose a consistence layer to actively and passively snapshot the cross-domain control states,to reduce the complexities of service realizations.We implement the layer and evaluate performance in the PlanetLab testbed for the WAN emulation.The testbed conditions are extremely enlarged comparing to the real network.The results show its scalability,reliability and responsiveness in dealing with the control dynamics.In the normalized results,the active and passive snapshots are executed with the mean times of 1.873 s and 105 ms in135 controllers,indicating its readiness to be used in the real network.展开更多
文摘随着云计算、物联网等新兴技术的不断发展,传统企业网络已经无法满足大规模数据传输和处理的需求。软件定义广域网络(Software-Defined networking in a Wide Area Network,SD-WAN)作为一种新型的企业网络架构方案,具有较高的可扩展性、灵活性和可管理性,成为企业网络升级的重要选择。通过对SD-WAN技术在不同企业组网中的应用和SD-WAN网络设计关键技术的介绍,深入剖析其优势和特点,并分析SD-WAN应用过程面临的挑战和解决方案,探讨未来SD-WAN技术的趋势和发展方向。
基金supported by the National Basic Research Program of China (2012CB315903)the Program for Key Science and Technology Innovation Team of Zhejiang Province(2011R50010,2013TD20)+3 种基金the National High Technology Research Program of China(2015AA016103)the National Natural Science Foundation of China(61379118)the Research Fund of ZTE CorporationJiaxing Science and Technology Project (No.2014AY21021)
文摘When applying Software-Defined Networks(SDN) to WANs,the SDN flexibility enables the cross-domain control to achieve a better control scalability.However,the control consistence is required by all the cross-domain services,to ensure the data plane configured in consensus for different domains.Such consistence process is complicated by potential failure and errors of WANs.In this paper,we propose a consistence layer to actively and passively snapshot the cross-domain control states,to reduce the complexities of service realizations.We implement the layer and evaluate performance in the PlanetLab testbed for the WAN emulation.The testbed conditions are extremely enlarged comparing to the real network.The results show its scalability,reliability and responsiveness in dealing with the control dynamics.In the normalized results,the active and passive snapshots are executed with the mean times of 1.873 s and 105 ms in135 controllers,indicating its readiness to be used in the real network.
