How to Diagnose Your Network 
Three ways are available here to  diagnose  your  network. If there’s  something  wrong  with  your 
network, select the proper one as you need. To deactivate this feature, select Disable. 
 
Site Survey 
To get an overview of your nearby wireless networks in range on all supported channels, click 
Advanced > Diagnose and then select Site Survey.   
The Site Survey tool reports the SSID, MAC Address, Channel, Security Mode, Encryption Type, 
Signal Strength of each SSID in the surrounding environment.