User's Manual

hwc_apstartup.fm
Configuring the Wireless AP
Configuring Wireless AP settings
A31003-W1050-U100-2-7619,
March 2008
HiPath Wireless Controller, Access Points and Convergence Software V5 R1 , C20/C2400 User Guide 101
• Last Requested Channel – This field is view only. This field displays the
last wireless channel that you had selected for the Wireless AP to
communicate with the wireless devices.
• Auto Tx Power Ctrl (ATPC) – The Wireless 802.11n AP does not support
the DRM functionality of the HiPath Wireless Controller and its related
ATPC feature.
• Current Tx Power Level – This field is view only. It displays the actual Tx
power level assigned to the Wireless 802.11n AP radio.
6. In the 11b Settings section, do the following:
•Preamble – Click a preamble type for 11b-specific (CCK) rates: Short or
Long. Click Short if you are sure that there is no pre-11b AP or a client
in the vicinity of this Wireless 802.11n AP. Click Long if compatibility with
pre-11b clients is required.
7. In the 11g Settings section, do the following:
• Protection Mode – Click a protection mode: None or Auto. Click None
if 11b APs and clients are not expected. Click Always if you expect many
11b-only clients.
•Protection Type – Click a protection type: CTS Only or RTS CTS. The
default and recommended setting is CTS Only. Click RTS CTS only if an
11b AP that operates on the same channel is detected in the
neighborhood, or if there are many 11b-only clients in the environment.
Note: The overall throughput is reduced when Protection Mode is enabled,
due to the additional overhead caused by the RTS/CTS. The overhead is
minimized by setting Protection Type to CTS Only. Although, the overhead
causes the overall throughput to be sometimes lower than if just 11b mode is
used. If there are many 11b clients, it is recommended to disable 11g support
(11g clients are backward compatible with 11b APs).
An alternate approach, although a more expensive method, is to dedicate all
APs on a channel for 11b (for example, disable 11g on these APs) and disable
11b on all other APs. The difficulty with this method is that the number of APs
must be increased to ensure coverage separately for 11b and 11g clients.
8. In the 11n Settings section, do the following:
• Protection Mode – Click a protection mode: Enabled or Disabled. This
protects high throughput transmissions on primary channels from non-
11n APs and clients. Click Disbabled if non-11n APs and clients are not
expected. Click Enabled if you expect many non-11n APs and clients.
The overall throughput is reduced when Protection Mode is enabled.