共查询到19条相似文献,搜索用时 109 毫秒
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冯小芳 《电信工程技术与标准化》2016,(3)
本文探讨了电信运营商IP网络的未来架构,明确了IP网络与IDC分布式架构之间的协同关系,重点研究了IP城域网的发展演进路径,在充分保护现有投资的基础上,增强网络的灵活配置和可编程能力,提升网络资源利用率和投资效益,对未来五年电信运营商IP网络的建设发展具有重要的参考意义。 相似文献
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本文主要研究的对象是NFV以及广电网实施NFV的需求与挑战,最后展望下一阶段广电网络的发展方向。 相似文献
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《信息通信技术》2016,(2):6-11
SDN和NFV因其架构的开发性和灵活的可编程性,成为下一代网络变革的核心技术之选。文章从SDN/NFV典型应用场景的需求出发,分别对云数据中心和广域网中SDN/NFV的部署进行了深入分析。云数据中心"按需申请"和"按使用付费"的运营模式,要求其网络拓扑必须能够及时地根据业务进行调整;基于SDN和NFV的网络服务虚拟化能够将业务的逻辑网络拓扑与物理网络拓扑相解耦,极大地提升了业务的交付速度。广域网由于管理域和业务模型的复杂性,对SDN/NFV的部署有更高的要求;基于分层多域的控制器架构能够为多域之间的协同提供帮助,而支持不同粒度的广域网流量工程则可以实现网络资源的充分利用。文章选取AT&T和Google作为运营商和互联网企业的代表,分析它们在SDN应用上所做的工作和取得的成果;最后,对SDN/NFV部署过程中可能存在的技术、业务等不同方面的挑战进行展望性的探讨。 相似文献
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A hardware‐acceleration architecture that separates virtual network functions (VNFs) and network control (called HSN) is proposed to solve the mismatch between the simple flow steering requirements and strong packet processing abilities of software‐defined networking (SDN) forwarding elements (FEs) in SDN/network function virtualization (NFV) architecture, while improving the efficiency of NFV infrastructure and the performance of network‐intensive functions. HSN makes full use of FEs and accelerates VNFs through two mechanisms: (1) separation of traffic steering and packet processing in the FEs; (2) separation of SDN and NFV control in the FEs. Our HSN prototype, built on NetFPGA‐10G, demonstrates that the processing performance can be greatly improved with only a small modification of the traditional SDN/NFV architecture. 相似文献
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The hardware acceleration mechanism for VNF (virtual network function) is recently a hot research topic in SDN/NFV architecture because of the low processing performance of VNF.Once hardware acceleration resources have been plugged into the network,how to optimally mange and orchestrate these resources under service requirements remains a question to be solved.Firstly,a unified management architecture based on separated control for hardware acceleration resources was proposed.Then,traditional network topology together with hardware acceleration resources were modeled into a unified network model and then the hardware acceleration resource orchestration problem was transferred into a multi-objective linear programming problem.Finally,a hardware-accelerator-card-prior’ heuristic algorithm was designed.Experimental results show that compared with existing methods,the proposed orchestration mechanism can efficiently manage hardware acceleration resources and reduce the processing latency by 30%. 相似文献
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