ZyXEL g-2000 plusv2 Guia Do Utilizador

ZyXEL G-2000 Plus v2 User’s Guide

Chapter 37 Troubleshooting

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

Table 128   Troubleshooting the Start-Up of Your ZyXEL device

None of the lights 

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 ZyXEL device 

reboots automatically 

sometimes.

The supplied power to the ZyXEL device is too low. Check that the ZyXEL device is receiving 

enough power.
Make sure the power source is working properly.

Table 129   Troubleshooting the Ethernet Interface

Cannot access the 

ZyXEL device from 

the LAN.

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

between your ZyXEL device 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 ZyXEL device, the Ethernet device and your computer are on the same 

subnet. 

I cannot ping any 

computer on the 

LAN.

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

between your ZyXEL device 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 ZyXEL device, the Ethernet 

device and the LAN computers are on the same subnet.