Chapter 5
Troubleshooting
Device not operating correctly
Cannot connect using Telnet, Web browser, or SNMP software
This chapter contains information on how to troubleshoot the switch in the event that a problem occurs.
Note
If you are still unable to resolve the problem after following the instructions in this chapter, contact ATI Technical Support for assistance.
Check the PWR LED on the front of the switch. If the LED is OFF, indicating that the unit is not receiving power, do the following:
Ensure 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 LNK/ACT LED for each port is ON. If a LNK/ACT LED is OFF, do the following:
Verify that the
Verify that the twisted pair cable is securely connected to the port on the switch and to the port on the
Ensure that the twisted pair cable does not exceed 100 meters (328 feet).
Verify that you are using Category 5 twisted pair cable.
Be sure the switch is powered up.
Check network cabling between the management station and the switch.
Check that you have a valid network connection to the switch and that the port you are using has not been disabled.
Be sure you have configured the VLAN interface through which the management station is connected with a valid IP address, subnet mask and default gateway.
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