Extreme Networks Summit WM User Manual page 133

3 Channel Plan - ACS will scan the following channels: 1, 6, and 11 in the US, and 1, 7, and 13
in Europe.
4 Channel Plan - ACS will scan the following channels: 1, 4, 7, and 11 in the US, and 1, 5, 9,
and 13 in Europe.
Auto - ACS will scan the default channel plan channels: 1, 6, and 11 in the US, and 1, 5, 9, and
13 in Europe.
Custom - If you want to configure individual channels from which the ACS will select an
operating channel, click Configure. The Add Channels dialog is displayed. Click the
individual channels you want to add to the channel plan while pressing the CTRL key, and
then click OK.
For radio a/n, click one of the following:
All Channels - ACS will scan all the channels for an operating channel.
Custom - If you want to configure individual channels from which the ACS will select an
operating channel, click Configure. The Add Channels dialog is displayed. Click the
individual channels you want to add to the channel plan while pressing the CTRL key, and
then click OK.
Dynamic Channel Selection - To enable Dynamic Channel Selection, click one of the following:
Monitor Mode - If traffic or noise levels exceed the configured DCS thresholds, an alarm is
triggered and an information log is generated.
Active Mode - If traffic or noise levels exceed the configured DCS thresholds, an alarm is
triggered and an information log is generated. In addition, the Altitude AP will cease
operating on the current channel and ACS is employed to automatically select an alternate
channel for the Altitude AP to operate on.
DCS Noise Threshold - Type the noise interference level, measured in dBms, after which ACS
will scan for a new operating channel for the Altitude AP if the threshold is exceeded.
DCS Channel Occupancy Threshold - Type the channel utilization level, measured as a
percentage, after which ACS will scan for a new operating channel for the Altitude AP if the
threshold is exceeded.
DCS Update Period - Type the time, measured in minutes that determines the period during
which the Altitude AP averages the DCS Noise Threshold and DCS Channel Occupancy
Threshold measurements. If either one of these thresholds is exceeded, then the Altitude AP
will trigger ACS.
Preamble - Click a preamble type for 11b-specific (CCK) rates: Short, Long, or Auto. The
recommended value is Auto. Click Short if you are sure that there is no pre-11b AP or a client in
the vicinity of this AP. Click Long if compatibility with pre-11b clients is required.
Protection Mode - Click a protection mode: None, Auto, or Always. The default and
recommended setting is 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.
13 In the 11n Settings section, do the following:
Protection Mode - For each radio, click a protection mode: None, Auto, or Always. The default
and recommended setting is Auto. Click None if 11b APs and clients are not expected. Click
Always if you expect many 11b-only clients.
40MHz Protection Mode - Click a protection type, CTS Only or RTS- CTS, or None, when a
40MHz channel is used. This protects high throughput transmissions on extension channels from
interference from non-11n APs and clients.
Summit WM User Guide, Software Version 5.3
133