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密集波分复用(DWDM)技术可以充分利用光纤的带宽资源,提供极大的传输容量,其生存性对于网络性能和服务至关重要。文中首先介绍了DWDM网络保护和自愈的基本技术,分析了不同拓扑结构的DWDM网络的生存性,最后阐述了多层自愈机制的协调问题。
Dense Wavelength Division Multiplexing (DWDM) technology takes full advantage of the fiber’s bandwidth resources and provides tremendous transmission capacity with survivability crucial to network performance and service. The paper firstly introduces the basic technology of DWDM network protection and self-healing, analyzes the survivability of DWDM networks with different topologies, and finally elaborates the coordination of multi-layer self-healing mechanism.