D-Link DWS-1008 User Manual page 170

DWS-1008 User's Manual
Generally, clients assume access points require long preambles and request to use short
preambles only if the access point with which they are associated advertises support for short
preambles. You can disable the advertisement of support for short preambles by setting the
preamble length value to long. In this case, clients assume that the access point supports
long preambles only and the clients request long preambles.
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 any client associated with an 802.11b/g radio uses long preambles for unicast traffic, the
access point still accepts frames with short preambles but does not transmit any 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.
The default preamble length value is short. This command does not apply to 802.11a
radios.
To change the preamble length advertised by 802.11b/g radios, use the following command:
set radio-profile name preamble-length {long | short}
To configure 802.11b/g radios that use the radio profile rp_long to advertise support for long
preambles instead of short preambles, type the following command:
DWS-1008# set radio-profile rp_long preamble-length long
success: change accepted.
Resetting a Radio Profile Parameter to its Default Value
To reset a radio profile parameter to its default value, use the following command:
clear radio-profile name parameter
Caution: Make sure you specify the radio profile parameter you want to reset. If you do not
specify a parameter, MSS deletes the entire profile from the configuration.
All radios that use this profile must be disabled before you can delete the profile. If you
specify a parameter, the setting for the parameter is reset to its default value. The settings of
the other parameters are unchanged and the radio profile remains in the configuration. If you
do not specify a parameter, the entire radio profile is deleted from the configuration.
To disable the radios that are using radio profile rp1 and reset the beaconed-ssid parameter
to its default value, type the following commands:
DWS-1008# set radio-profile rp1 mode disable
DWS-1008# clear radio-profile rp1 beaconed-ssid
success: change accepted.
D-Link Systems, Inc.
Configuring DWL-8220AP Access Points
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