Command Reference Guide

set radio-profile preamble-length 345

set radio-profile

preamble-length

Changes the preamble length for which an 802.11b/g MAP radio

advertises support. This command does not apply to 802.11a.

Syntax —

set radio-profile name

preamble-length

{long | short}

 name — Radio profile name.

 long — Advertises support for long preambles.

 short — Advertises support for short preambles.

Defaults — The default is short.

Access — Enabled.

History —Introduced in MSS Version 3.0.

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 MAP access point 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:

WX4400# set radio-profile rp_long preamble-length long

success: change accepted.