Appendix A: Troubleshooting; Diagnosing Led Indicators; Power And Cooling Problems; Installation - AMX NXA-ENET8-2POE Instruction Manual

Appendix A: Troubleshooting

Diagnosing LED Indicators

LED Indicators
LED Status
PWR LED is Off
DIAG LED is Flashing Amber
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. If you still cannot isolate the problem, the internal power supply may be defective.

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 a web browser, or other
network management software tools. 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 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.

Problems Accessing the Management Interface

Cannot Connect Using a Web Browser, or SNMP Software

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.
Be sure the management station has an IP address in the same subnet as the switch's IP interface to which it is connected.

If you are trying to connect to the switch via the IP address for a tagged VLAN group, your management station, and the

ports connecting intermediate switches in the network, must be configured with the appropriate tag.

Forgot or Lost the Password

Contact your local distributor.

Using System Logs

If a fault does occur, refer to the Installation Guide to ensure that the problem you encountered is actually caused by the switch. If
the problem appears to be caused by the switch, follow these steps:
1. Enable logging.
2. Set the error messages reported to include all categories.
3. Enable SNMP.
4. Enable SNMP traps.
5. Designate the SNMP host that is to receive the error messages.
6. Repeat the sequence of commands or other actions that lead up to the error.
7. Make a list of the commands or circumstances that led to the fault. Also make a list of any error messages displayed.
8. Contact your distributor's service engineer.
Enter the Document Name Here
Action
• Check connections between the switch, the power cord, and the wall outlet.
• Contact your dealer for assistance.
• Power cycle the switch to try and clear the condition.
• If the condition does not clear, contact your dealer for assistance.
• Verify that the switch and attached device are powered on.
• Be sure the cable is plugged into both the switch and corresponding device.
• If the switch is installed in a rack, check the connections to the punch-down block and patch panel.
• 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.
Appendix A: Troubleshooting
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