data-rates

interface-config-radio-instance

Configures the 802.11 data rates on this radio

This command sets the rate options depending on the 802.11 protocol and the radio band selected. If 2.4 GHz is selected as the radio band, select separate 802.11b, 802.11g and 802.11n rates and define how they are used in combination. If 5.0 GHz is selected as the radio band, select separate 802.11a and 802.11n rates then define how they are used together.

If dedicating the radio to either 2.4 or 5.0 GHz support, use the custom keyword to set a 802.11n MCS (modulation and coding scheme) in respect to the radio‘s channel width and guard interval. A MCS defines (based on RF channel conditions) an optimal combination of rates, bonded channels, multiple spatial streams, different guard intervals and modulation types. Clients can associate as long as they support basic MCS (as well as non-11n basic rates).

Data rates are fixed and not user configurable for radios functioning as sensors.

Note

Note

Use the rf-mode command to configure a radio‘s mode of operation.

Supported in the following platforms:

Syntax

data-rates [b-only|g-only|a-only|bg|bgn|gn|an|default|custom|mcs]
data-rates [b-only|g-only|a-only|bg|bgn|gn|an|default]
data-rates custom [1|2|5.5|6|9|11|12|18|24|36|48|54|mcs-1s|mcs-2s|mcs-3s|basic-1|basic-2|
basic-5.5|basic-6|basic-9|basic-11|basic-12|basic-18|basic-24|basic-36|basic-48|basic-54|basic-mcs-1s]
data-rates mcs qam-only

Parameters

data-rates [b-only|g-only|a-only|bg|bgn|gn|an|default]
data-rates Configures the 802.11 data rates on this radio
b-only Supports operation in the 802.11b mode only (applicable for 2.4 and 4.9 GHz bands)
g-only Uses rates that support operation in the 802.11g mode only (applicable for 2.4 and 4.9 GHz bands)
a-only Uses rates that support operation in the 802.11a mode only (applicable for 5.0 GHz band only)
bg Uses rates that support 802.11b and 802.11g wireless clients (applicable for 2.4 and 4.9 GHz bands)
bgn Uses rates that support 802.11b, 802.11g, and 802.11n wireless clients (applicable for 2.4 and 4.9 GHz bands)
gn Uses rates that support 802.11g and 802.11n wireless clients (applicable for 2.4 and 4.9 GHz bands)
an Uses rates that support 802.11a and 802.11n wireless clients (applicable for 5.0 GHz band only)
default Enables the default data rates according to the radio‘s band of operation 
data-rates custom [1|2|5.5|6|9|11|12|18|24|36|48|54||mcs-1s|mcs-2s|mcs-3s|basic-1|basic-2|
basic-5.5|basic-6|basic-9|basic-11|basic-12|basic-18|basic-24|basic-36|basic-48|basic-54|basic-mcs-1s]
data-rates Configures the 802.11 data rates on this radio
custom Configures a list of data rates by specifying each rate individually. Use 'basic-' prefix before a rate to indicate it‘s used as a basic rate (For example, 'data-rates custom basic-1 basic-2 5.5 11')
  • 1 – 1-Mbps
  • 2 – 2-Mbps
  • 5.5 – 5.5-Mbps
  • 6 – 6-Mbps
  • 9 – 9-Mbps
  • 11 – 11-Mbps
  • 12 – 12-Mbps
  • 18 – 18-Mbps
  • 24 – 24-Mbps
  • 36 – 36-Mbps
  • 48 – 48-Mbps
  • 54 – 54-Mbps
  • mcs-1s – Applicable to 1-spatial stream data rates
  • mcs-2s – Applicable to 2-spatial stream data rates
  • mcs-3s – Applicable to 3-spatial stream data rates
  • basic-1 – Basic 1-Mbps
  • basic-2 – Basic 2-Mbps
  • basic-5.5 – Basic 5.5-Mbps
  • basic-6 – Basic 6-Mbps
  • basic-9 – Basic 9-Mbps
  • basic-11 – Basic 11-Mbps
  • basic-12 – Basic 12-Mbps
  • basic-18 – Basic 18-Mbps
  • basic-24 – Basic 24-Mbps
  • basic-36 – Basic 36-Mbps
  • basic-48 – Basic 48-Mbps
  • basic-54 – Basic 54-Mbps
  • basic-mcs-1s – Modulation and Coding Scheme data rates for 1 Spatial Stream
    Note: Refer to the Usage Guidelines Usage Guidelines (Supported data rates) section for 802.11an and 802.11ac MCS detailed dates rates for both with and without SGI (short guard intervals).
 
data-rates mcs qam-only
data-rates Configures the 802.11 data rates on this radio
mcs qam-only Configures supports for MCS QAM data rates only

Usage Guidelines (Supported data rates)

The following table defines the 802.11n MCS for MCS 1 streams, both with and without SGI:

MCS-1Stream Index Number of Streams 20 MHz No SGI 20 MHz With SGI 40 MHz No SGI 20 MHz With SGI
0 1 6.5 7.2 13.5 15
1 1 13 14.4 27 30
2 1 19.5 21.7 40.5 45
3 1 26 28.9 54 60
4 1 39 43.4 81 90
5 1 52 57.8 108 120
6 1 58.5 65 121.5 135
7 1 65 72.2 135 150

The following table defines the 802.11n MCS for MCS 2 streams, both with and without SGI:

MCS-2Stream Index Number of Streams 20 MHz No SGI 20 MHz With SGI 40 MHz No SGI 20 MHz With SGI
0 2 13 14.4 27 30
1 2 26 28.9 54 60
2 2 39 43.4 81 90
3 2 52 57.8 108 120
4 2 78 86.7 162 180
5 2 104 115.6 216 240
6 2 117 130 243 270
7 2 130 144.4 270 300

The following table defines the 802.11n MCS for MCS 3 streams, both with and without SGI:

MCS-3Stream Index Number of Streams 20 MHz No SGI 20 MHz With SGI 40 MHz No SGI 20 MHz With SGI
0 3 19.5 21.7 40.5 45
1 3 39 43.3 81 90
2 3 58.5 65 121.5 135
3 3 78 86.7 162 180
4 3 117 130.7 243 270
5 3 156 173.3 324 360
6 3 175.5 195 364.5 405
7 3 195 216.7 405 450

The following table defines the 802.11ac MCS rates (theoretical throughput for single spatial streams) both with and without SGI:

MCS Index 20 MHz No SGI 20 MHz With SGI 40 MHz No SGI 40 MHz With SGI 80 MHz No SGI 80 MHz No SGI
0 6.5 7.2 13.5 15 29.3 32.5
1 13 14.4 27 30 58.5 65
2 19.5 21.7 40.5 45 87.8 97.5
3 26 28.9 54 60 117 130
4 39 43.3 81 90 175.5 195
5 52 57.8 108 120 234 260
6 58.5 65 121.5 135 263.3 292.5
7 65 72.2 135 150 292,5 325
8 78 86.7 162 180 351 390
9 N/A N/A 180 200 390 433.3

Example

nx9500-6C8809(config-profile-510TestProfile-if-radio1)#data-rates b-only

nx9500-6C8809(config-profile-510TestProfile-if-radio1)#show context
 interface radio1
  channel 1
  data-rates b-only
  beacon period 50
  beacon dtim-period bss 1 5
  beacon dtim-period bss 2 2
  beacon dtim-period bss 3 5
  ........................................................
  beacon dtim-period bss 13 5
  beacon dtim-period bss 14 5
  beacon dtim-period bss 15 5
  beacon dtim-period bss 16 5
  antenna-gain 12.0
  aggregation ampdu tx-only
  aeroscout forward
  --More--
nx9500-6C8809(config-profile-510TestProfile-if-radio1)#

Related Commands

no (radio-interface-config-command) Resets the 802.11 data rates on a radio
rf-mode Configures the radio‘s RF mode of operation
9036514-01 Rev AA