Parameter

Description

Short guard interval in 20 MHz

Enable or disable use of short (400ns) guard interval in 20 MHz mode. This parameter

mode

is enabled by default.

 

A guard interval is a period of time between transmissions that allows reflections

 

from the previous data transmission to settle before an AP transmits data again. An

 

AP identifies any signal content received inside this interval as unwanted inter-

 

symbol interference, and rejects that data. The 802.11n standard specifies two guard

 

intervals: 400ns (short) and 800ns (long). Enabling a short guard interval can decrease

 

network overhead by reducing unnecessary idle time on each AP. Some outdoor

 

deployments, may, however require a longer guard interval. If the short guard interval

 

does not allow enough time for reflections to settle in your mesh deployment, inter-

 

symbol interference values may increase and degrade throughput.

 

 

Short guard interval in 40 MHz

Enable or disable use of short (400ns) guard interval in 40 MHz mode. This parameter

mode

is enabled by default.

 

A guard interval is a period of time between transmissions that allows reflections

 

from the previous data transmission to settle before an AP transmits data again. An

 

AP identifies any signal content received inside this interval as unwanted inter-

 

symbol interference, and rejects that data. The 802.11n standard specifies two guard

 

intervals: 400ns (short) and 800ns (long). Enabling a short guard interval can decrease

 

network overhead by reducing unnecessary idle time on each AP. Some outdoor

 

deployments, may, however require a longer guard interval. If the short guard interval

 

does not allow enough time for reflections to settle in your mesh deployment, inter-

 

symbol interference values may increase and degrade throughput.

 

 

Supported MCS set

A list of Modulation Coding Scheme (MCS) values or ranges of values to be supported

 

on this SSID. The MCS you choose determines the channel width (20MHz vs. 40MHz)

 

and the number of spatial streams used by the mesh node.

 

The default value is 1–23; the complete set of supported values. To specify a smaller

 

range of values, enter a hyphen between the lower and upper values. To specify a

 

series of different values, separate each value with a comma.

 

Examples:

 

2–10

 

1,3,6,9,12

 

Range: 0–23.

 

 

In the CLI

(host)(config) #rf ht-radio-profile ht-radioa-corpnet

(host)(config) #rf ht-radio-profile ht-radiog-corpnet

(host)(config) #rf dot11a-radio-profile ht-corpnet-a high-throughput-enable

ht-radio-profile ht-radioa-corpnet (host)(config) #rf dot11g-radio-profile ht-corpnet-g

high-throughput-enable ht-radio-profile ht-radiog-corpnet

(host)(config) #wlan ht-ssid-profile ht-ssid-corpnet high-throughput-enable

(host)(config) #wlan ssid-profile ht-corpnet ht-ssid-profile ht-ssid-corpnet

(host)(config) #wlan virtual-ap ht-vap-corpnet allowed-bands all

ssid-profile ht-corpnet (host)(config) #ap-group ht-corpnet-ap

dot11a-radio-profile ht-corpnet-a dot11g-radio-profile ht-corpnet-g virtual-ap ht-vap-corpnet

344 Virtual APs

Dell PowerConnect W-Series ArubaOS 6.2 User Guide

Page 343 Page 345
Page 344
Image 344
Dell 6.2 Short guard interval in 20 MHz, Mode Is enabled by default, Short guard interval in 40 MHz, Supported MCS set
Page 343 Page 345

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