Issue with Fiber & SFP %SFF8472-3-THRESHOLD_VIOLATION

[VinothkumarRajendran29612]

Issue:

Dec 20 12:06:35.061: %SFF8472-3-THRESHOLD_VIOLATION: Twe1/0/1: Temperature high alarm; Operating value: 28.2 C, Threshold value: 0.0 C.
Dec 20 12:16:35.169: %SFF8472-3-THRESHOLD_VIOLATION: Twe1/0/1: Rx power high alarm; Operating value: -7.6 dBm, Threshold value: -40.0 dBm.
Dec 20 12:16:35.170: %SFF8472-3-THRESHOLD_VIOLATION: Twe1/0/1: Tx power high alarm; Operating value: -5.5 dBm, Threshold value: -40.0 dBm.
Dec 20 12:16:35.171: %SFF8472-3-THRESHOLD_VIOLATION: Twe1/0/1: Voltage high alarm; Operating value: 3.32 V, Threshold value: 0.00 V.
Dec 20 12:16:35.171: %SFF8472-3-THRESHOLD_VIOLATION: Twe1/0/1: Temperature high alarm; Operating value: 28.2 C, Threshold value: 0.0 C.
Dec 20 12:26:35.279: %SFF8472-3-THRESHOLD_VIOLATION: Twe1/0/1: Rx power high alarm; Operating value: -7.5 dBm, Threshold value: -40.0 dBm.
Dec 20 12:26:35.280: %SFF8472-3-THRESHOLD_VIOLATION: Twe1/0/1: Tx power high alarm; Operating value: -5.5 dBm, Threshold value: -40.0 dBm.

>> This switch 9500 series stack once, mentioned interface acts as layer 2 connection between two sites. now the traffic going via this interface . as of now no issue.
>> Above error it will cause any more issues in further.

Transmit Power Threshold Threshold Threshold Threshold
Port Lane (dBm) (dBm) (dBm) (dBm) (dBm)
--------- ---- --------------- ---------- --------- --------- ---------
Twe1/0/1 N/A N/A -40.0 -40.0 -40.0 -40.0

Optical High Alarm High Warn Low Warn Low Alarm
Receive Power Threshold Threshold Threshold Threshold
Port Lane (dBm) (dBm) (dBm) (dBm) (dBm)
--------- ---- --------------- ---------- --------- --------- ---------
Twe1/0/1 N/A N/A -40.0 -40.0 -40.0 -40.0

[VinothkumarRajendran29612]

Please help on this issue , it would be helpful to fix the issue as soon as possible,

[reccon]

The operating values of the sfp look good to me.

The (high alarm) threshold values on the sfp seem to be incorrect though.

I found this in an old post:

...the current value is read from the DOM chip on board the SFP (presuming it has DOM support). 

This is compared with the threshold table, which is read from the IDPROM of the SFP upon bootup.  The threshold table itself can not be modified

So I assume that the threshhold table on your sfp is faulty.

If you have a chance, replace the sfp and see if the error occurs again.