| 摘要 |
A conventional edge device is constituted of a switching device and a transmission device. The switching device determines an ODU as an accommodation destination for an L2 packet from a client side device in accordance with an L2 ID, and outputs the L2 packet to an output port to which the ODU is associated. The transmission device receives an L2 packet through an input port corresponding to an output port of the switching device in a one-to-one manner, and performs transparent mapping on the corresponding ODU so as to output the signal by using an ODU connection.
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