combo enable fiber in interface view and ensure the connected SFP module is compatible.Huawei switches often feature a combo interface, which includes both a GE electrical (copper) port and a GE optical (fiber) port sharing a single logical interface. Only one of these ports can operate at a time; enabling one automatically disables the other . By default, the combo interface operates in electrical mode.
system-view command.interface GigabitEthernet0/0/1.combo enable fiber This switches the interface to optical mode .
undo combo enable fiber to return to the default electrical interface.
display transceiver interface xgigabitethernet 0/0/1 verbose to check the SFP module status, including wavelength, optical power, and diagnostic information .shutdown state) and that the fiber connection is correct.
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