User`s manual

165
DWS-1008 User’s Manual
D-Link Systems, Inc.
Conguring DWL-8220AP Access Points
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 trafc, 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-prole name preamble-length {long | short}
To congure 802.11b/g radios that use the radio prole rp_long to advertise support for long
preambles instead of short preambles, type the following command:
DWS-1008# set radio-prole rp_long preamble-length long
success: change accepted.
Resetting a Radio Prole Parameter to its Default Value
To reset a radio prole parameter to its default value, use the following command:
clear radio-prole name parameter
Caution: Make sure you specify the radio prole parameter you want to reset. If you do not
specify a parameter, MSS deletes the entire prole from the conguration.
All radios that use this prole must be disabled before you can delete the prole. 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 prole remains in the conguration. If you
do not specify a parameter, the entire radio prole is deleted from the conguration.
To disable the radios that are using radio prole rp1 type the following command:
DWS-1008# set radio-prole rp1 mode disable
success: change accepted.