SNR S2940-8G-v2 Switch Configuration Guide
DDM Configuration
RX loss of signal
Voltage high
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(A+) 5.00 0.00 5.00 0.00
Bias current(mA) 6.11(W+) 10.30 0.00 5.00 0.00
RX Power(dBM) -30.54(A-) 9.00 -25.00 9.00 -25.00
TX Power(dBM) -13.01 9.00 -25.00 9.00 -25.00
Step 2: Configure the tx-power threshold of the fiber module, the low-warning threshold is -12,
the low-alarm threshold is -10.00.
Switch#config
Switch(config)#interface ethernet 1/21
Switch(config-if-ethernet1/21)#transceiver threshold tx-power low-warning -12
Switch(config-if-ethernet1/21)#transceiver threshold tx-power low-alarm -10.00
Step 3: Show the detailed DDM information of the fiber module. The alarm uses the threshold
configured by the user, the threshold configured by the manufacturer is labeled with the bracket.
There is the alarm with A- due to -13.01 is less than -12.00.
Switch#show transceiver interface ethernet 1/21 detail
Ethernet 1/21 transceiver detail information:
Base information:
Brief alarm information:
RX loss of signal
Voltage high
RX power low
TX 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(A+) 5.00 0.00 5.00 0.00
Bias current(mA) 6.11(W+) 10.30 0.00 5.00 0.00
RX Power(dBM) -30.54(A-) 9.00 -25.00 9.00 -25.00
TX Power(dBM) -13.01(A-) 9.00 -12.00(-25.00) 9.00 -10.00(-25.00)
Example 3:
Ethernet 1/21 is inserted the fiber module with DDM. Enable the transceiver monitoring of the
port after showing the transceiver monitoring of the fiber module.
Step 1: Show the transceiver monitoring of the fiber module. Both ethernet 1/21 and ethernet
1/22 do not enable the transceiver monitoring, its interval is set to 30 minutes.
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