
Modifying Altitude AP settings
Summit WM Series WLAN Switch and Altitude Access Point Software Version 4.1 User Guide
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■ Protection Type – Select a protection type: CTS Only or RTS CTS. The default and
recommended setting is CTS Only. Select 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 and Protection Rate to 11
Mbps. 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.
● If applicable, click the 802.11a tab to modify the radio properties.
● DTIM Period – Type the desired DTIM (Delivery Traffic Indication Message) period—the number
of beacon intervals between two DTIM beacons. To ensure the best client power savings, use a
large number. For example, 5. Use a small number for broadcast and multicast delay. The default
value is 1.
● Beacon Period – Type the desired time, in milliseconds, between beacon transmissions. The
default value is 100 milliseconds.
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