MSM7xx Controllers Configuration Guide v6.4.0

MHz channel is formed from the indicated channel plus the next channel. A (-1) indicates that
the 40 MHz channel is formed from the indicated channel plus the previous channel.
With a 40 MHz Channel width in the 5 GHz band, channel selection and usage is as follows
for the first four channels:
Channels usedChannel selected
36+4036(1)
40+3640(-1)
44+4844(1)
48+4448(-1)
NOTE: The channel selected is the primary channel and the channel above or below it
becomes the secondary channel. The AP beacon is transmitted only on the primary channel
and all legacy client traffic is carried on the primary channel.
• On the MSM410, MSM422 (radio 1): When Wireless mode is 802.11n/b/g, and Channel
width is Auto 20/40 MHz, the Channel extension parameter value affects which channels are
shown in the Channel list. Although HP recommends that you use the 5 GHz band for all
802.11n activity, if you insist upon using 802.11n and a 40 MHz Channel width in the
crowded 2.4 GHz band, it is best to select channels as follows, according to the number of
2.4 GHz channels available in your region.
Recommended non-overlapping channelsChannel width
Available 2.4 GHz
channels
1, 7, 1320 MHz1 to 13
1, 13 (If both are used, there will be some performance
degradation.)
40 MHz1 to 13
1, 6, 1120 MHz1 to 11
1, 11 (If both are used, there will be some performance
degradation.)
40 MHz1 to 11
• When using an 80 MHz channel width on the HP 517, the primary channel can be any one
of the channels in the following sets, with the remaining channels in the set becoming secondary
channels.
◦ 36, 40, 44, 48
◦ 52, 56, 60, 64
◦ 100, 104, 108, 112
◦ 116, 120, 124, 128
◦ 132, 136, 140, 144
◦ 149, 153, 157, 161
Interval
Not available in Monitor or Sensor modes, or when the auto-channel feature is enabled.
Radio configuration 93