Ubiquiti – How to test a cable
Sometimes a device will either not work or have reduced speeds when connected to the network. To rule out the cable, you can either swap it with a known working cable or test the cables from the switch back to the client directly from the Unifi switch itself.
This is a short one, but one that I had to look up a few times.
Testing the Cable
SSH into the switch (replace unifiuser and the IP address to match your setup)
Once connected, telnet into the device
Enable the terminal and run the cable test
enable cablestatus 0/#
Replace # with the port number. I.e port 13 would be 0/13
You’ll one of the following under status:
- Normal – Everything is working correctly
- Open – The cable is disconnected or there is a faulty connector
- Short – There is an electrical short in the cable
- Cable Test Failed – The cable status could not be determined
Once completed, enter Quit to close the telnet session and Exit to close the SSH session
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