Transceiver is not present on this port

  • 12 June 2020
  • 0 replies

Userlevel 3


What does it mean when "debug hal" shows info about the transceiver?

# debug hal show optic-info ddmi port 16
Port 16
SFP or SFP+ or SFP28: SFP
Signal: present
TX Fault: no
Vendor: OEM
Part Number: ...
Serial Number: ...
Manufacture Date: 200407
SFP/SFP+/SFP28 Type: Unknown
Connector: LC
GE Compliance: UNKNOWN (0x0)
Wavelength: 1543
Options[0]: 0x00
Options[1]: 0x1a

GBIC supports DDMI. MonitorType: 68
Optic is Internally Calibrated

However "show port" acts as if there was no transceiver there:

# show ports 16 transceiver information

Port Temp TxPower RxPower TxBiasCurrent Voltage-Aux1/ Voltage-Aux2
(Celsius) (dBm) (dBm) (mA) Vcc (Volts) (Volts)
16 Transceiver is not present on this port

There is no message about DDM not being supported or any other compatibility problem in the log.

(The link is working fine.)


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