Wireless Access Point
314 Configuring the Wireless AP
One of the IAPs must be set to monitor mode if you wish to support 
Spectrum Analyzer, Radio Assurance (loopback testing), and Intrusion 
Detection features. Monitoring has a Timeshare mode option, which is 
especially useful for small APs with two IAPs allowing one IAP to be 
shared between monitoring the airwaves for problems and providing 
services to stations. See RF Monitor Mode in “Advanced RF Settings” on 
page 357 to set this option. 
4. In the WiFi Mode field, select the IEEE 802.11 wireless mode (or 
combination) that you want to allow on this IAP. The drop-down list will 
only display the appropriate choices for the selected Band. For example, 
the 5 GHz band allows you to select ac-only, anac, an, a-only, or n-only, 
while 2.4GHz includes 802.11b and 802.11g choices. When you select a 
WiFi Mode for any IAP, your selection in the Channel column will be 
checked to ensure that it is a valid choice for that WiFi Mode. 
By selecting appropriate WiFi Modes for the radios on your APs, you can 
greatly improve wireless network performance. For example, if you have 
802.11n and 802.11ac stations using the same IAP, throughput on that 
radio is reduced greatly for the 802.11ac stations. By supporting 802.11n 
stations only on selected radios in your network, the rest of your 802.11ac 
IAPs will have greatly improved performance. Take care to ensure that 
your network provides adequate coverage for the types of stations that 
you need to support. 
5. In the Channel field, select the channel you want this IAP to use from the 
channels available in the pull-down list. The list shows the channels 
available for the IAP selected (depending on which band the IAP is 
using). Channels that are shown in gray are unavailable. They are either 
already in use, or not offered for the selected Band. 
The channels that are available for assignment to IAPs will differ, 
depending on the country of operation. If Country is set to United States
in the Global Settings window, then 21 channels are available to 802.11an 
radios.