Справочник Пользователя для SonicWALL 5.8.1

In searching a way to show how channel is utilized for all connected SonicPoints, we resulted 
in displaying such a channel utilization graph.

There are two color bars for each channel. The number on the top of each color bar indicates 
the number of SonicPoints that detect the particular issue in that channel. SonicPoints perform 
an IDS scan on all available channels upon boot-up and RFA analyzes these scan results to 
decide on issues for each channel. 

For example: if there are 10 SonicPoints connected, and 6 of these decide that channel 11 is 
overloaded, the number on the top of purple color bar will be 6; if 8 SonicPoints decide that 
channel 6 is highly interfered, the number on the top of the cyan color bar will be 8. Zero will be 
shown for channels no issues.

Channels 12, 13, 14 are shown, but in some countries these channels are not used. These 
channels are still monitored however, because it is possible for a wireless cracker to set up 
a wireless jammer in channel 12, 13, or 14 and launch deny of service service attack to lower 
channels.