Values from 1 dB–55 dB reduce the power level that the radio can hear by that amount. If you configure this
feature to use a non-default value, you must also reduce the radio’s transmission (Tx) power to match its new
received (Rx) power level. Failure to match a device’s Tx power level to its Rx power level can result in a
configuration that allows the radio to send messages to a device that it cannot hear.
To configure Cell Size Reduction for 2.4 GHz radio profile in the CLI:
(Instant AP)(config)# rf dot11g-radio-profile
(Instant AP)(RF dot11g Radio Profile)# cell-size-reduction <reduction>
(Instant AP)(RF dot11g Radio Profile)# end
(Instant AP)# commit apply
To configure Cell Size Reduction for 5 GHz radio profile in the CLI:
(Instant AP)(config)# rf dot11a-radio-profile
(Instant AP)(RF dot11a Radio Profile)# cell-size-reduction <reduction>
(Instant AP)(RF dot11a Radio Profile)# end
(Instant AP)# commit apply
ARM Channel Selection using the CLI
Starting from Instant 6.5.0.0-4.3.0.0, IAPs can search for a new environment in a short span of time, so that
the ARM is triggered to perform frequent scanning and selection of a valid channel for transmission.
By default, the ARM is triggered to scan all the channels every 10 seconds, and select the best channel for
transmission. But when the IAP is in a new environment, ARM is triggered to perform frequent scanning of the
non-DFS channels every 200 milliseconds, and select the best available channel for transmission. The
ap-
frequent-scan
command is introduced in the CLI to enable the IAPs to trigger frequent scanning of
transmission signals on a radio profile.
Wireless connection is affected for a few seconds when the frequent scanning of non-DFS channels is
ongoing. The connection is re-established after the ARM selects a valid channel. Typically, a frequent scanning
session lasts for less than 10 seconds.
Perform the following checks before scanning:
l
The DFS channels must be skipped (this is done to avoid delays in scanning).
l
The IAP must be on stand-alone mode.
l
The
client-aware
parameter must be disabled in the ARM profile.
In the CLI
The following example triggers ARM scanning on a 2.4 GHz frequency band radio profile:
(Instant AP)# ap-frequent-scan 2.4
To verify the status of ARM scanning:
(Instant AP)# show ap debug am-config
Aruba Instant 6.5.0.0-4.3.0.0 | User Guide
Adaptive Radio Management |
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