Allied-telesis AT-GS950/24 User Manual download pdf (Page 39)

Chapter 3

Troubleshooting

This chapter contains information on how to troubleshoot the switch if a

problem occurs.

Note

For further assistance, please contact Allied Telesis Technical

Support. Refer to “Contacting Allied Telesis” on page 14.

Check the POWER LED on the front of the switch. If the LED is off,

indicating that the unit is not receiving power, do 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 using a different power cord.

 Verify that the voltage from the power source is within the required

levels for your region.

Verify that the LINK/ACT LED for each port is ON. If a LINK/ACT LED is

OFF, do the following:

 Verify that the end node connected to the port is powered on and is

operating properly.

 Verify that the twisted pair cable is securely connected to the port on

the switch and to the port on the end node.

 Verify that the twisted pair cable does not exceed 100 meters (328

feet).

 Verify that you are using the appropriate category of twisted pair cable:

Category 3 or better for 10 Mbps operation and Category 5 and

Category 5E for 100 and 1000 Mbps operation.

Note

A 1000Base connection may require five to ten seconds to establish

a link.

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Allied-telesis AT-GS950/24 User Manual Page 39