ZyXEL Communications VSG-1200 V2 用户手册

VSG-1200 V2 User’s Guide

Chapter 33 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 to solve the problem.

The LEDs are useful aides for finding possible problem causes.

The LED on the front panel does not light up.

None of the LEDs for the 

 

LAN port(s) light up when connected to an Ethernet device. 

Table 79   Troubleshooting the Power LED 

1

Check the connections from the VSG to the power source. Make sure you are using the 

supplied power cord and proper power supply. Refer to the appendix on product 

specifications.

2

Make sure the power source is turned on and that the VSG is receiving sufficient power.

3

If these steps fail to correct the problem, contact your local distributor for assistance.

Table 80   Troubleshooting the LAN LED

1

Make sure you are using the correct Ethernet cable. Connect the LAN port to a hub/switch 

using a crossover Ethernet cable or directly to a computer using a straight-through Ethernet 

cable.

2

Verify that the attached device(s) is turned on and properly connected to the VSG.

3

Verify that Ethernet cable length does not exceed 100 meters.

4

Make sure the network adapters are working on the attached devices.