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考虑到光交换机能在面向数据的网络中发挥重要作用，一些主要的路由器和光设备供应商开始合作，把多协议标签交换（MPLS）控制平面和光交换机的功能结合起来，推出称为多协议波长交换（MPλS）的协议。这个协议允许业务层的设备通过现有的控制平面动态地向传输层申请带宽。光网
Considering that optical switches play an important role in data-oriented networks, some of the major routers and optical equipment vendors have started to work together to combine the capabilities of Multiprotocol Label Switching (MPLS) control plane and optical switches into a multi-protocol wavelength switching (MPλS) protocol. This protocol allows service layer devices to dynamically apply bandwidth to the transport layer through the existing control plane. Optical network