Users Guide

Dell PowerConnect W-Series ArubaOS 6.1 | User Guide Secure Enterprise Mesh | 235
Non 802.11 Interference
Immunity
Set a value for 802.11 Interference Immunity.
The default setting for this parameter is level 2. When performance drops due to interference from
non-802.11 interferers (such as DECT or Bluetooth devices), the level can be increased up to level 5
for improved performance. However, increasing the level makes the AP slightly “deaf” to its
surroundings, causing the AP to lose a small amount of range.
The levels for this parameter are:
 Level 0: no ANI adaptation.
 Level 1: noise immunity only.
 Level 2: noise and spur immunity.
 Level 3: level 2 and weak OFDM immunity.
 Level 4: level 3 and FIR immunity.
 Level 5: disable PHY reporting.
NOTE: Do not raise the noise immunity feature’s default setting if the RX Sensitivity Tuning Based
Channel Reuse feature is also enabled. A level-3 to level-5 Noise Immunity setting is not compatible
with the Channel Reuse feature.
Enable CSA Channel Switch Announcements (CSAs), as defined by IEEE 802.11h, enable an AP to announce that
it is switching to a new channel before it begins transmitting on that channel. This allows clients that
support CSA to transition to the new channel with minimal downtime.
CSA Count Number of channel switch announcements that must be sent prior to switching to a new channel.
The default CSA count is 4 announcements.
Management Frame
Throttle Interval
Averaging interval for rate limiting management frames from this radio, in seconds. A management
frame throttle interval of 0 seconds disables rate limiting.
Management Frame
Throttle Limit
Maximum number of management frames that can come in from this radio in each throttle interval.
ARM/WIDS Override If selected, this option disables Adaptive Radio Management (ARM) and Wireless IDS functions and
slightly increases packet processing performance. If a radio is configured to operate in Air Monitor
mode, then the ARM/WIDS override functions are always enabled, regardless of whether or not this
check box is selected.
Protection for 802.11b
Clients
(For 802.11g RF Management Profiles only) Enable or disable protection for 802.11b clients. This
parameter is enabled by default. Disabling this feature may improve performance if there are no
802.11b clients on the WLAN.
WARNING: Disabling protection violates the 802.11 standard and may cause interoperability issues.
If this feature is disabled on a WLAN with 802.11b clients, the 802.11b clients will not detect an
802.11g client talking and can potentially transmit at the same time, thus garbling both frames.
Maximum Distance Maximum client distance, in meters. This value is used to derive ACK and CTS timeout times. A value
of 0 specifies default settings for this parameter, where timeouts are only modified for outdoor mesh
radios which use a distance of 16km.
The upper limit for this parameter varies from 24–58km, depending on the radio’s band (a/g) and 20/
40 MHz mode. Note that if you configure a value above the supported maximum, the maximum
supported value will be used instead. Values below 600m will use default settings.
Spectrum Monitoring Select this option to convert APs using this radio profile to a hybrid APs that will continue to serve
clients as an Access Point, but will also scan and analyze spectrum analysis data for a single radio
channel. For more details on hybrid APs, see “Spectrum Analysis” on page 607.
Table 43 802.11a/802.11g RF Management Configuration Parameters (Continued)
Parameter Description