Appendix A: Troubleshooting; Diagnosing Switch Indicators; Power And Cooling Problems; Installation - Accton Technology CheetahSwitch Workgroup-3627 Installation Manual

Appendix A: Troubleshooting

Diagnosing Switch Indicators

Symptom
Power LED is Off
Link LED is Off

Power and Cooling Problems

If the power indicator does not turn on when the power cord is plugged in, you may
have a problem with the power outlet, power cord, or internal power supply.
However, if the unit powers off after running for a while, check for loose power
connections, power losses or surges at the power outlet, and verify that the fans on
the unit are unobstructed and running prior to shutdown. If you still cannot isolate the
problem, then the internal power supply may be defective. In this case, contact
Accton Technical Support for assistance.

Installation

Verify that all system components have been properly installed. If one or more
components appear to be malfunctioning (such as the power cord or network
cabling), test them in an alternate environment where you are sure that all the other
components are functioning properly.

In-Band Access

You can access the management agent in the switch from anywhere within the
attached network using Telnet, a Web browser, or other network management
software such as AccView. However, you must first configure the switch with a valid
IP address, subnet mask, and default gateway. If you have trouble establishing a link
to the management agent, check to see if you have a valid network connection.
Then verify that you entered the correct IP address. Also, be sure the port through
which you are connecting to the switch has not been disabled. If it has not been
disabled, then check the network cabling that runs between your remote location
and the switch.
Troubleshooting Chart
Action
• Internal or redundant power supply has failed or is disconnected.
• Check connections between the switch, the power cord, the wall outlet,
and the RPU if you are using one.
• Contact Accton Technical Support.
• Verify that the switch and attached device are powered on.
• Be sure the cable is plugged into both the switch and corresponding
device.
• Verify that the proper cable type is used and its length does not exceed
specified limits.
• Check the adapter on the attached device and cable connections for
possible defects. Replace the defective adapter or cable if necessary.
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