08-20-2014 01:50 AM
As we know,
we cannot configure the optical transmit power of the SFP. Though we can check the receive power level received by peer through the command:
show interface transceiver detail
However, logs have been displaying:
Aug 20 06:45:14.434: %SFF8472-5-THRESHOLD_VIOLATION: Gi1/0/25: Rx power high warning; Operating value: -1.7 dBm, Threshold value: -3.0 dBm.
Checking it:
Optical High Alarm High Warn Low Warn Low Alarm
Receive Power Threshold Threshold Threshold Threshold
Port (dBm) (dBm) (dBm) (dBm) (dBm)
------- ----------------- ---------- --------- --------- ---------
Gi1/0/25 -1.7 + 1.0 -3.0 -19.0 -23.0
WIll this have a big impact on my switch? Especially the SFP module
Factors like damage, etc.
Also, how will it affect network performance, both the health and operation of my devices
Your ideas are greatly appreciated (and if you can back it up with docs, it'd would be helpful too! ^_^)
Solved! Go to Solution.
08-21-2014 06:18 AM
It seems your distant end is sending a relatively high output power and/or you have a very short fiber connection with very little loss. Since you are only in the 'warn' range you are not likely to cause any damage to the receiving SFP or affect network operation adversely. You do have the option of adding an optical attenuator to the link to make the operating range more within specification.
08-21-2014 06:18 AM
It seems your distant end is sending a relatively high output power and/or you have a very short fiber connection with very little loss. Since you are only in the 'warn' range you are not likely to cause any damage to the receiving SFP or affect network operation adversely. You do have the option of adding an optical attenuator to the link to make the operating range more within specification.
08-21-2014 06:46 AM
Thanks Marvin
Yeah, I was cocern that this might damage the module, but to be safe, i wil recommend this, adding an antenuator to the optical fiber.
Though, maybe just maybe, ill try to swap the SFPs, see if it'll work
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