SNR S2940-8G-v2 Switch Configuration Guide
DDM Configuration
Switch(config)#show transceiver threshold-violation interface ethernet 1/21-22
Ethernet 1/21 transceiver threshold-violation information:
Transceiver monitor is disabled. Monitor interval is set to 30 minutes.
The last threshold-violation doesn't exist.
Ethernet 1/22 transceiver threshold-violation information:
Transceiver monitor is disabled. Monitor interval is set to 30 minutes.
The last threshold-violation doesn't exist.
Step 2: Enable the transceiver monitoring of ethernet 1/21.
Switch(config)#interface ethernet 1/21
Switch(config-if-ethernet1/21)#transceiver-monitoring enable
Step 3: Show the transceiver monitoring of the fiber module. In the following configuration,
ethernet 21 enabled the transceiver monitoring, the last threshold-violation time is Jan 02 11:00:50
2011, the detailed DDM information exceeding the threshold is also shown.
Switch(config-if-ethernet1/21)#quit
Switch(config)#show transceiver threshold-violation interface ethernet 1/21-22
Ethernet 1/21 transceiver threshold-violation information:
Transceiver monitor is enabled. Monitor interval is set to 30 minutes.
The current time is Jan 02 12:30:50 2011.
The last threshold-violation time is Jan 02 11:00:50 2011.
Brief alarm information:
RX loss of signal
RX power low
Detail diagnostic and threshold information:
Diagnostic Threshold
Realtime High Alarm Low Alarm High Warn Low Warn
--------- ---------- ----------- --------- ---------
Temperature 33 70 0 70 0
Voltage(V) 7.31 10.00 0.00 5.00 0.00
Bias current(mA) 3.11 10.30 0.00 5.00 0.00
RX Power(dBM) -30.54(A-) 9.00 -25.00(-34) 9.00 -25.00
TX Power(dBM) -1.01 9.00 -12.05 9.00 -10.00
Ethernet 1/22 transceiver threshold-violation information:
Transceiver monitor is disabled. Monitor interval is set to 30 minutes.
The last threshold-violation doesn't exist.
12.4 DDM Troubleshooting
If problems occur when configuring DDM, please check whether the problem is caused by the
following reasons:
• Ensure that the transceiver of the fiber module has been inserted fast on the port, or else
DDM configuration will not be shown.
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