Extreme Networks Summit WM User Manual page 96

Configuring the Altitude AP
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.
Antenna Selection - Click the antenna, or antenna combination, you want to configure on this
radio.
NOTE
When you configure the Wireless 802.11n AP to use specific antennas, the transmission power is recalculated;
the Current Tx Power Level value for the radio is automatically adjusted to reflect the recent antenna
configuration. It takes approximately 30 seconds for the change to the Current Tx Power Level value to be
reflected in the Summit WM GUI. Also, the radio is reset; the radio is reset causing client connections on this
radio to be lost.
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 Altitude 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.
96
Summit WM User Guide, Software Version 5.3