Xirrus XS-3900 User Manual page 136

Wireless LAN Array
3. Optimize Data Rates: The Xirrus Wireless LAN Array can optimize your
802.11b/g data rates automatically, based on range or throughput. Click
on the Range button to optimize data rates based on range, or click on the
Throughput button to optimize data rates based on throughput. The
Restore Default Rates button will take you back to the factory default
rate settings.
4. 802.11bg IAP Status: Click on the Enable 802.11b/g IAPs button to enable
all 802.11b/g radios for this Array, or click on the Disable 802.11b/g IAPs
button to disable all 802.11b/g radios.
5. Channel Configuration: Click on the Auto Configure button to instruct
the Array to determine the best channel allocation settings for each
802.11b/g radio and select the channel automatically, based on changes in
the environment. This is the recommended method for 802.11b/g channel
allocations.
6. Set Cell Size: The Cell Size may be set globally for all 802.11a IAPs to
Large, Medium, or Small via a drop down menu.
7. 802.11g Only: Select On if you want to restrict use to 802.11g mode only.
In this mode, no 802.11b rates are transmitted. Also, stations that only
support 802.11b will not be able to associate.
8. 802.11g Protection: Select Auto to provide automatic protection for all
802.11g radios.
802.11g Slot: Select Auto to instruct the Array to manage the 802.11g slot
9.
times automatically, or choose Short Only. Xirrus recommends using
Auto for this settings, especially if 802.11b devices are present.
10. 802.11b Preamble: The
client devices need when sending and receiving packets. All compliant
802.11b systems have to support the long preamble (a short preamble
improves the efficiency of a network's throughput when transmitting
special data, such as voice, VoIP (Voice-over IP) and streaming video.
Select Auto to instruct the Array to manage the preamble (long and short)
automatically, or choose Long Only.
Configuring the Xirrus Array
preamble contains information that the Array and
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