How to identify a combo port on a switch
You can use the following methods to identify a combo port on a switch:
Identify a combo port based on the interface identifier on the switch panel. If two ports have the same ID but connect to different transmission media, the two ports are multiplexed as a combo port.
Run the display interface command to display the combo port.
<HUAWEI> display interface gigabitethernet 0/0/1
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 0025-9e80-2494
Port Mode: COMBO AUTO
Speed : 100, Loopback: NONE
You can run the combo-port command to set the working mode of a combo port.
COMBO AUTO: The combo port automatically selects the working mode.
FORCE FIBER: The combo port is configured to work as an optical port.
FORCE COPPER: The combo port is configured to work as an electrical port.