Cisco CLI - Page 17

Command-line interface user manual
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transmission channel
width value.
• C is the maximum
transmission channel
width value.
• D is the transmit
opportunity value.
• E is the aggregated MAC
protocol data unit value.
Enable and disable noise floor
calibration.
wireless nfcal J
Possible parameters for J are
enable and disable.
Set the operational mode for
dynamic frequency selection
(DFS) when the device is
operated in the UNII2
frequency band.
wireless radar-role
U
Possible parameters for U are
auto (The unit will automatically
participate in a
Principal/Subordinate role-
election process, and the
elected Principal unit will
determine the operating
frequency), master (All
Subordinate units connected to
the unit will match the unit’s
DFS frequency selection) or
slave (The unit will match the
DFS frequency selection of the
closest Principal unit).
Note that if value U is set to
auto, all radio units that are
part of the network must also
be set to auto.
Scan a preset list of alternate
frequencies.
If the device is being operated
in the UNII2 frequency band
and detects a TDWR
transmission on the current
operational frequency, it will
scan the preset frequency list
for an unoccupied frequency.
wireless backup-
frequencies V
Parameter V is the preset list of
alternate frequencies in MHz.
Note that each frequency value
added to the list must include a
specified channel width in
MHz.
Depending on radio transceiver
type, possible channel width
values are 5, 10, 20, 40 or 80.
A typical command entry might
be wireless backup-
frequencies 5255 20
5300 40 5310 40.
IMPORTANT
If a Cisco radio device is operated in the UNII2 frequency
band, and the wireless radar-role is set as master, the
device will continuously monitor the chosen operating
frequency for known radar patterns.
If the network detects a known radar pattern, the elected
Principal (i.e. master) radio device coordinates a distributed
frequency-switching procedure with all Subordinate (i.e.
slave) radio units, allowing the network to continue
operating on an alternate frequency without interruption.