ZyXEL Communications G-202 ユーザーズマニュアル

ZyXEL G-202 User’s Guide

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Chapter 7 Troubleshooting

Table 22   Troubleshooting Link Quality 

The link quality 

and/or signal 

strength is poor all 

the time.

Search and connect to another AP with a better link quality using the Site Survey 

screen.
Move your computer closer to the AP or the peer computer(s) within the 

transmission range.
There may be too much radio interference (for example microwave or another AP 

using the same channel) around your wireless network. Lower the output power of 

each AP.
Make sure there are not too many wireless stations connected to a wireless 

network.

Table 23   Troubleshooting Communication Problem 

In wireless station 

mode, the 

computer with the 

G-202 installed 

cannot 

communicate with 

the other 

computer(s).

In Infrastructure Mode
•

Make sure that the AP and the associated computers are turned on and 

working properly.  

•

Make sure the G-202 computer and the associated AP use the same SSID.

•

Change the AP and the associated wireless clients to use another radio 

channel if interference is high.

•

Make sure that the computer and the AP share the same security option and 

key. Verify the settings in the Profile Security Setting screen.

•

If you are using WPA(2) or WPA(2)-PSK security, try changing your encryption 

type from TKIP to AES or vice versa.

In Ad-Hoc (IBSS) Mode
•

Verify that the peer computer(s) is turned on.

•

Make sure the G-202 computer and the peer computer(s) are using the same 

SSID and channel.

•

Make sure that the computer and the peer computer(s) share the same 

security settings.

•

Change the wireless clients to use another radio channel if interference is high.

In access point 

mode, the wireless 

station(s) cannot 

associate to the G-

202.

Verify that the computer with the G-202 installed is turned on.
Make sure the wireless station(s) uses the same SSID as the G-202.
Make sure the wireless station(s) uses the same security settings.
Verify that the wireless station(s) is not blocked in the MAC Filter screen.