MSM7xx Controllers Configuration Guide v6.4.0

When the Automatic option is selected for Channel, this parameter determines how often the AP
re-evaluates the channel setting. Select Time of day to have the channel setting re-evaluated at a
specific time of day.
• Select Time of day to have the channel setting re-evaluated at a specific time of day. Note
that to prevent all APs from re-evaluating their channel at the same time, a random delay
between 0 and 2 hours is added to the time of day for each AP. If the Interval parameter is
set to any value other than Time of day. and a wireless client is associated with the radio,
automatic channel selection is delayed. The AP will retry at one minute intervals until the radio
is unused by wireless clients.
• Select a time interval in hours to define how often the channel setting is re-evaluated. If a
wireless client is associated with the radio when the interval occurs, automatic channel selection
is delayed (at one minute intervals) until the radio is unused by wireless clients. Background
scanning is not supported when you select this option.
• Select Disabled to have the scan performed once when you select Save, and then only when
the AP is restarted. This also prevents continuous scanning from being performed on the
MSM310, MSM320, MSM335, MSM410, and MSM422.
Time of day
Not available in Monitor or Sensor modes, or when the auto-channel feature is enabled.
When the Time of day option is selected for Interval, this parameter determines the time of day
that the AP re-evaluates the channel setting.
To prevent APs from re-evaluating their channel at the same time, a random delay between 0 and
2 hours is added to the time of day for each AP. For example, if 1AM is selected, the channel with
be re-evaluated between 1AM and 3AM.
Automatic channel exclusion list
Not available in Monitor or Sensor modes, or when the auto-channel feature is enabled.
Used when Automatic is selected under Channel, this parameter determines the channels that are
not available for automatic selection. To select more than one channel, hold down Ctrl as you
select the channel names.
On the HP 517, channel 144 is excluded by default.
Antenna selection
Supported on: MSM310, HP 425, MSM320, MSM335, MSM422
Not available in Monitor or Sensor modes.
Select the antenna(s) to use for each radio. Antenna support varies on each AP. For a list of
supported external antennas, see Connecting external antennas in the MSM3xx / MSM4xx Access
Points Configuration Guide.
In most APs, antenna diversity is supported. Diversity provides improved signal quality by using
multiple antennas on the same radio.
NOTE:
• When using an external antenna, it is your responsibility to make sure that the radio does not
exceed the transmit power level for the country of use. See “Transmit power control” (page 99).
• When creating a point-to-point local mesh link, HP recommends that you use an external
directional antenna.
94 Wireless configuration