Command:
Run the display board 0/0 command to check the PON port type and whether the
PON port is successfully registered with the OLT.
Command: Run the interface EPONNNI/GPONNNI 0/0 /1 command to enter the EPON
or GPON port mode.
Command: Run the display port state command to view the PON port status,
optical module type, and optical receive status.
Note: This command can be executed on the hardware of the new version. If
the command cannot be executed in earlier hardware versions, the command is
not supported.