Hub/Switch Reference Guide

304 AP Commands

NN47250-100 (Version 02.51)

set radio-profile preamble-length

Changes the preamble length for which an 802.11b/g AP radio advertises support. This command does not

apply to 802.11a.

Syntax

set radio-profile name preamble-length {long | short}

Defaults

The default is short.

Access

Enabled.

Usage

Changing the preamble length value affects only the support advertised by the radio.

Regardless of the preamble length setting (short or long), an 802.11b/g radio accepts and can

generate 802.11b/g frames with either short or long preambles.

If a client associated with an 802.11b/g radio uses long preambles for unicast traffic, the AP still accepts

frames with short preambles but does not transmit frames with short preambles. This change also occurs if the

access point overhears a beacon from an 802.11b/g radio on another access point that indicates the radio has

clients that require long preambles.

You must disable all radios that use a radio profile before you can change parameters in the profile. Use the set

radio-profile mode command

Examples

The following command configures 802.11b/g radios that use the radio profile rp_long

to advertise support for long preambles instead of short preambles:

WSS# set radio-profile rp_long preamble-length long

success: change accepted.