在光传送网向分组传送网演进的过程中，网络之间的互联互通是运营商关心的主要问题之一。
In the evolution of the optical transport network to the packet transport network, one of the main concerns of the operators is the interworking between networks.
在传输带宽和业务应用需求的双重驱动下，智能光网络作为光传送网的发展趋势得到越来越多的关注。
It is considered as the trend of optical transmission network and gets more and more focus under the dual drive of transmission bandwidth and service application demand.
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