3com WX1200 3CRWX120695A Manuel D’Utilisation

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set radio-profile preamble-length
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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 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.
See Also
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