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New Member
Posts: 8
Registered: ‎12-13-2017

SFP port RX fault

We have noticed that in two of our Unifi Switches ( 48 POE-500W) it shows RX fault as the status in the SFP port in the controller.

The controller firmware is 5.7.23 and the firmware version of the switches are 3.8.3.6587. We have noticed that there is pending firmware upgrade for switches (into 3.9.42.9152).  Please let me know will it fix after a firmware upgrade.

How to identify whether this is a hardware failure of the SFP module or due to the firmware. Because this alert did not occur throughout the existing firmware.

Ubiquiti Employee
Posts: 114
Registered: ‎10-15-2018
Kudos: 12
Solutions: 9

Re: SFP port RX fault

@lordhww Are your fiber pairs possibly reversed? Have you moved the fiber/SFP to a different interface? 

Jonathan See | UniFi Support Team
New Member
Posts: 8
Registered: ‎12-13-2017

Re: SFP port RX fault

Hi Jonathan,

 

No, we did not move SFP to a different interface. Are there any logs where we can find from the switches.

Ubiquiti Employee
Posts: 114
Registered: ‎10-15-2018
Kudos: 12
Solutions: 9

Re: SFP port RX fault

Are you able to test another interface on your switch? Did you confirm that the pairs weren't reversed?

 

You could cat /var/log/messages from the switch.

Jonathan See | UniFi Support Team
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