User's Manual

Wireless Array
Configuring the Wireless Array 275
Procedure for Manually Configuring IAPs
1. In the Enabled column, check the box for an IAP to enable it, or uncheck
the box if you want to disable the IAP.
In the Band column, select the wireless band for this IAP from the choices
available in the pull-down menu, either 2.4GHz or 5 GHz. Choosing the
5GHz band will automatically select an adjacent channel for bonding. If
the band displayed is auto, the Band is about to be changed based on a
new Channel selection that you made that requires the change.
One of the IAPs must be set to monitor mode to support Spectrum
Analyzer, Radio Assurance (loopback testing), and Intrusion Detection
features.
2. In the WiFi Mode column, 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 an, a-only, or n-only, while 2.4GHz
also includes 802.11b and 802.11g choices. When you select a WiFi Mode
for an 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 Arrays, you
can greatly improve wireless network performance. For example, if you
have 802.11b and 802.11n stations using the same IAP, throughput on that
radio is reduced greatly for the 802.11n stations. By supporting 802.11b
stations only on selected radios in your network, the rest of your 802.11a
or 11n radios 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.

For XN16 Arrays only— 
The XN16 allows up to 12 IAPs to operate as 5 GHz — 802.11an radios
concurrently using internal antennas. Do not set Mode to 5 GHz for more
than 12 IAPs unless you are using external antennas. Please contact Xirrus
Customer Support for details.