How to configure the working mode of a combo interface

You can run the combo-port { auto | copper | fiber } command to configure the working mode of a combo interface.
By default, a combo interface works in auto mode, in which the combo interface automatically works as an optical or electrical interface.

-When the auto mode is specified, the system checks whether the combo optical interface has an optical module installed, and selects the interface working mode as follows:
-When the electrical interface is not connected, the combo interface works as an optical interface if the combo optical interface has an optical module installed.
-When the electrical interface is connected using a network cable and the combo interface is Up, the combo interface works as an electrical interface even if the combo optical interface has an optical module installed. However, the combo interface works as an optical interface after the device restarts.
-When the electrical interface is connected using a network cable and the combo interface is Down, the combo interface works as an optical interface if the combo optical interface has an optical module installed.
In summary, when the auto mode is specified and the combo optical interface has an optical module installed, the combo interface works as an optical interface after the device restarts.

-You can forcibly specify the working mode of the combo interface based on the remote interface type. If the local combo electrical interface is connected to a remote electrical interface, configure the combo interface to work in copper mode. If the local combo optical interface is connected to a remote optical interface, configure the combo interface to work in fiber mode.

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