Chapter 6
Troubleshooting
This chapter contains suggestions on how to troubleshoot the switch if a problem occurs.
Note
For further assistance, please contact Allied Telesis Technical
Support at www.alliedtelesis.com/support.
Problem 1: The Switch ID LED on the front of the switch is off.
Solutions: The unit is not receiving power. Try the following:
Verify that the power cord is securely connected to the power source and to the AC connector on the back panel of the switch.
Verify that the power outlet has power by connecting another device to it.
Try connecting the unit to another power source.
Try a different power cord.
Verify that the voltage from the power source is within the required levels for your region.
Problem 2: All of the port LEDs are off even though the ports are connected to active network devices.
Solution: The switch may be operating in the low power mode. To toggle on the LEDs, press the
Problem 3: A twisted pair port on the switch is connected to a network device but the port’s LINK/ACT LED is off.
Solutions: The port is unable to establish a link to a network device. Try the following:
Verify that the port is connected to the correct twisted pair cable. This is to eliminate the possibility that the port is connected to the wrong network device.
Verify that the network device connected to the twisted pair port is powered on and is operating properly.
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