Users Guide

80 | RF Plan Dell PowerConnect ArubaOS 5.0 | User Guide
Radio Properties (Desired Rates and HT Support Options)
Define 802.11a, 802.11b/g, and 802.11n settings for the 5 GHz and 2.4 GHz frequency bands, including high-
throughput, data rates, and 40 Mhz channel spacing.
Table 15 Radio Properties
Radio Property Description
802.11a Desired Rate The desired 802.11a rate defines the estimated transmit rate within the WLAN coverage area.
The higher the speed, the smaller the coverage area, and the more APs required. The valid
values are: 54, 48, 36, 24, 18, 12, 9, 6.
This option is only available when 802.11n (HT) support is disabled (unchecked or grayed out).
When an 802.11n radio type, such as 802.11a + n or 802.11a/b/g + n, is selected and 802.11n (HT)
support is enabled (checked) on the 5 GHz band, the system will automatically define the 802.11a
rate. The system looks at the defined 802.11n rate and the distance covered by the defined rate;
the system then selects a corresponding 802.11a rate based on the distance covered.
5 GHz 802.11 (HT) Support High-throughput is available when utilizing the IEEE 802.11n standard and can be enabled on the
5 GHz frequency band when either the 802.11a + n or 802.11a/b/g + n mixed-mode radio type is
selected.
The 802.11n (high-throughput) draft standard supports MIMO (Multiple Input, Multiple Output)
and the option of 40 MHz mode of operation. However, high-throughput can be utilized on a 20
MHz channel or on a 40 MHz channel (bonded channel pair).
5 GHz 802.11n Desired Rate The desired 802.11n rate defines the estimated transmit rate within the WLAN coverage area.
The higher the speed, the smaller the coverage area, and the more APs required.
This option is only available when 802.11n (HT) support is enabled (checked).
The valid values when using 20 MHz channel spacing: 6.5, 13.0, 19.5, 26.0, 39.0, 52.0, 58.5, 65.0,
78.0, 104.0, 117.0, 130.0.
The valid values when using 40 MHz channel spacing: 13.5, 27.0, 40.5, 54.0, 81.0, 108.0, 121.15,
135.0, 162.0, 216.0, 243.0, 270.0.
5 GHz Use 40 MHz Channel
Spacing
Use 40 MHz Channel Spacing
—40 MHz operation, which supports higher data rates by utilizing
two 20 MHz channels as a bonded pair, requires that high-throughput be enabled (checked). 40
MHz mode is most often utilized on the 5 GHz frequency band due to a greater number of
available channels.
This option is only available when 802.11n (HT) support is enabled (checked).
802.11b/g Desired Rate The desired 802.11b/g rate defines the estimated transmit rate within the WLAN coverage area.
The higher the speed, the smaller the coverage area, and the more APs required. The valid
values are: 54, 48, 36, 24, 18, 12, 9, 6, 11, 5.5, 2, 1.
This option is only available when 802.11n (HT) support is disabled (unchecked or grayed out).
When an 802.11n radio type, such as 802.11g + n or 802.11a/b/g + n, is selected and 802.11n (HT)
support is enabled (checked) on the 2.4 GHz band, the system will automatically define the
802.11b/g rate. The system looks at the defined 802.11n rate and the distance covered by the
defined rate; the system then selects a corresponding 802.11b/g rate based on the distance
covered.
2.4 GHz 802.11 (HT) Support High-throughput is available when utilizing the IEEE 802.11n standard and can be enabled on the
2.4 GHz frequency band when either the
802.11g + n or 802.11a/b/g + n mixed-mode radio type is selected.
The 802.11n (high-throughput) draft standard supports MIMO (Multiple Input, Multiple Output)
and the option of 40 MHz mode of operation. However, high-throughput can be utilized on a 20
MHz channel or on a 40 MHz channel (bonded channel pair).
2.4 GHz 802.11n Desired Rate The desired 802.11n rate defines the estimated transmit rate within the WLAN coverage area.
The higher the speed, the smaller the coverage area, and the more APs required.
This option is only available when 802.11n (HT) support is enabled (checked).
The valid values when using 20 MHz channel spacing: 6.5, 13.0, 19.5, 26.0, 39.0, 52.0, 58.5, 65.0,
78.0, 104.0, 117.0, 130.0.
The valid values when using 40 MHz channel spacing: 13.5, 27.0, 40.5, 54.0, 81.0, 108.0, 121.15,
135.0, 162.0, 216.0, 243.0, 270.0.