Displays basic information about the optical transceiver.
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port_list |
Specifies the port number(s). |
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tag |
Specifies an 802.1Q or 802.1ad tag value. |
N/A.
Digital Diagnostic Monitoring Interface (DDMI) provides critical system information about the installed optical modules. Use this command to monitor the condition of XFP, SFP, and SFP+ optical transceiver modules.
The tag value may be associated with either a VMAN or a VLAN.
If you try to execute this command on one of the ports in the port list that is non-compliant with DDMI, the following error message is displayed and the command does not go through:
Port 3:1 This command is not supported on this port. All ports and transceiver of the ports requested in the command need to support DDMI.If you try to execute this command on one of the ports in the port list on which the transceiver is non-compliant with DDMI, the following error message is displayed:
Port 3:1 This media/transceiver does not support enhanced digital diagnostic monitoring interface (DDMI). All ports and transceiver of the ports requested in the command need to support DDMI.For more detailed information, use the show ports transceiver information detail command.
The following display shows output for port 1:1-2:
# sh port 1:1-2 transceiver information Port Temp TxPower RxPower TxBiasCurrent Voltage-Aux1 Voltage-Aux2 (Celcius) (dBm) (dBm) (mA) (Volts) (Volts) ================================================================================ 1:1 30.60 -25.20 -18.70 0.40 5.09 5.07 1:2 30.60 -25.20 -18.70 0.40 5.09 N/A ================================================================================ N/A indicates that the parameter is not applicable to the optics connected to the port
The following display shows output for port 25:
# sh ports 25 transceiver information Port Temp TxPower RxPower TxBiasCurrent Voltage-Aux1 Voltage-Aux2 (Celsius) (dBm) (dBm) (mA) (Volts) (Volts) ================================================================================= 25 32.00 -3.35 -2.68 7.67 3.35 N/A =================================================================================
Note
In show ports transceiver information output, the Rx/Tx power values shown may be +/- 3dB from the actual value due to the limitation of SFP and the accuracy depends on SFP vendor. For accurate power measurement, it is recommended to use a power meter.This command was first available in ExtremeXOS 12.4.
Support for the ExtremeSwitching switches was added in ExtremeXOS 12.5.
The tag value was added in ExtremeXOS 12.4.4.
Support for SFP and SFP+ optics was added in ExtremeXOS 12.5.3.