It analyzes the col aborative application of SDN to IP layer and optical layer, discusses the integrated architecture of IP and opti-cal layer based on SDN, expounds the evolution of smart control in the convergence of IP layer and optical layer.%分析了SDN在IP层与光层的协同应用,论述了基于SDN的IP与光融合架构,阐述了智能控制在IP与光协同中的演进。
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