IP over DWDM(Dense Wavelength Division Multiplexing)optical Internet is one of the mainstream networking techniques for NGI(Next Generation Internet)backbone,and how to improve its fault-tolerance capability and QoS provision becomes critical.

• IP/DWDM(IPover Dense Wavelength Division Multiplexing)光Internet是下一代互联网NGI(Next Genera-tion Internet)主干网的主要组网技术之一。