ZyXEL Communications G-2000 Plus Manual Do Utilizador

ZyAIR G-2000 Plus User’s Guide

Appendix A 

376

This appendix covers potential problems and possible remedies. After each problem 
description, some instructions are provided to help you to diagnose and to solve the problem.

Table 127   Troubleshooting the Start-Up of Your ZyAIR

None of the LEDs 

turn on when I plug in 

the power adaptor. 

Make sure you are using the supplied power adaptor and that it is plugged in to an 

appropriate power source. Check that the power source is turned on. 
If the problem persists, you may have a hardware problem. In this case, you should contact 

your local vendor.  

The ZyAIR reboots 

automatically 

sometimes.

The supplied power to the ZyAIR is too low. Check that the ZyAIR is receiving enough power.
Make sure the power source is working properly.

Table 128   Troubleshooting the Ethernet Interface

Cannot access the 

ZyAIR from the 

LAN.

If the ETHN LED on the front panel is off, check the Ethernet cable connection 

between your ZyAIR and the Ethernet device connected to the ETHERNET port.
Check for faulty Ethernet cables.
Make sure your computer’s Ethernet adapter is installed and working properly.
Check the IP address of the Ethernet device. Verify that the IP address and the subnet 

mask of the ZyAIR, the Ethernet device and your computer are on the same subnet. 

I cannot ping any 

computer on the 

LAN.

If the ETHN LED on the front panel is off, check the Ethernet cable connections 

between your ZyAIR and the Ethernet device.
Check the Ethernet cable connections between the Ethernet device and the LAN 

computers.
Check for faulty Ethernet cables.
Make sure the LAN computer’s Ethernet adapter is installed and working properly.
Verify that the IP address and the subnet mask of the ZyAIR, the Ethernet device and 

the LAN computers are on the same subnet.