Cable Test - Ubiquiti EdgeSwitch ES-24-250W Administration Manual

EdgeSwitch Administration Guide
™

Cable Test

The cable test feature enables you to determine the cable connection status on a selected port. You can also
obtain an estimate of the length of the cable connected to the port, if the PHY on the ports supports this
functionality.
Note: The cable test feature is supported only for copper cable. It is not supported for optical fiber cable.
To access the Cable Test feature, click System > Port > Cable Test.
The page displays additional fields when you click Test Cable. The fields that are displayed depend on the
cable test results.
Field
Interface
Failure Location Distance
Cable Length
Cable Status
Select a port from the Interface drop-down menu and click Test Cable to display its status.
If the port has an active link while the cable test is run, the link can go down for the duration of the test.
The test may take several seconds to run. The command returns a cable length estimate if this feature is
supported by the PHY for the current link speed.
Note: If the link is down and a cable is attached to a 10/100 Ethernet adapter, the displayed Cable
Status may be Open or Short because some Ethernet adapters leave unused wire pairs unterminated or
grounded.
Ubiquiti Networks, Inc.
Cable Test
Cable Test Fields
Description
Select the port (with connected cable) to be tested.
The estimated distance from the end of the cable to the failure location.
Note: This field displays a value only if the Cable Status is Open or Short; otherwise, this field is blank.
The estimated length of the cable in meters. If the cable length cannot be determined, Unknown
is displayed. This field shows the range between the shortest estimated length and the longest
estimated length.
Note: This field displays a value only when the Cable Status is Normal; otherwise, this field is blank.
This field is displayed after you click Test Cable and test results are available. Values include.
• Normal The cable is working correctly.
• Open The cable is disconnected or there is a faulty connector.
• Open and Short There is an electrical short in the cable.
• Cable status test failed The cable status could not be determined. The cable may in fact be
working.
Configuring System Information
68