Chapter 11: Troubleshooting - Allied Telesis x330 Series Installation Manual

Chapter 11
Troubleshooting
This chapter contains suggestions on troubleshooting problems with the
switch.
Note
For further assistance, contact Allied Telesis Technical Support at
www.alliedtelesis.com/us/en/services-support.
Problem 1: The ports are connected to network devices but the port LEDs
and Switch ID LED are off.
Solutions: Try the following:
Verify that the power cord is securely connected to the power

source and 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. The power requirements for the switch are
listed in "Power Specifications" on page 156.
The switch might be operating in the low power eco-friendly mode.

To toggle on the LEDs, press the eco-friendly button on the front
panel or enter the NO ECOFRIENDLY LED command in the
command line interface.
Problem 2: A copper port is connected to an active network device, but
the port's link/activity and duplex LEDs are off.
Solutions: The port has not established a link to the network device. Try
the following:
Verify that the network device connected to the copper port is

powered on and operating properly.
Try connecting another network device to the port with a different

cable. If the port is able to establish a link, then the problem is with
the cable or the other network device.
Verify that the cable does not exceed 100 meters (328 feet).

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