08-10-2020 10:42 PM
often we are receiving the STP change logs from the L2 switch and we could see flap in uplinks. We are getting log below.
%SFF8472-3-THRESHOLD_VIOLATION: Gi1/1/1: Rx power low warning; Operating value: -18.2 dBm, Threshold value: -16.9 dBm.
%SFF8472-3-THRESHOLD_VIOLATION: Gi3/1/1: Rx power low warning; Operating value: -17.3 dBm, Threshold value: -16.9 dBm.
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08-11-2020 01:37 AM - edited 08-11-2020 01:38 AM
Hi,
First of all can you please check what kind of fibre cable and sfp module do you use ? Something like single mode or multimode.? If wrong can you please fix and check again?
Apart from that error message could be due to one of the following;
Bad fiber or Bad transceiver module
As an another action plan;
1-) You can replace the fiber link all over the path .
2-) You can try to replace the transceiver module on both side .
Thank you
Best Regards
PS: Please don't forget to rate if it's helpful
08-11-2020 12:23 AM
- Probably software bug, ignore if no effective connectivity problems are seen
M.
08-11-2020 01:37 AM - edited 08-11-2020 01:38 AM
Hi,
First of all can you please check what kind of fibre cable and sfp module do you use ? Something like single mode or multimode.? If wrong can you please fix and check again?
Apart from that error message could be due to one of the following;
Bad fiber or Bad transceiver module
As an another action plan;
1-) You can replace the fiber link all over the path .
2-) You can try to replace the transceiver module on both side .
Thank you
Best Regards
PS: Please don't forget to rate if it's helpful
08-11-2020 08:38 PM
Hi ,
Awaiting for the customer reply.
08-11-2020 03:54 PM
If this was working for long you see suddenly?
in that switch only 2 ports having issue rest all ok.
i would inspect physical patch cable and replace SFP and test again and monitor
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