Bridge GUI Guide: Network Configuration
67
3.3.2.9
Short Preamble
The short preamble is used by virtually all wireless devices
currently being produced. The
Short Preamble
is therefore the
most likely requirement for new network implementations and
is
Enabled
by default. The setting applies only to 802.11g band
operation; it is greyed out for Radio 2 and for Radio 1 when it is
configured to use the 802.11a band.
When
Short Preamble
is
Disabled
connecting devices must use
the long preamble, which is still in use by some older 802.11b
devices. If the WLAN must support devices that use the long
preamble, you must set
Short Preamble
for the radio on which
the access point BSS is configured to
Disabled
.
You can configure
Short Preamble
only in Advanced View.
3.3.2.10
Noise Immunity
For radios using the
802.11a
band (Section 3.3.2.2), enabling
Noise Immunity
allows the radio to aggressively lower the
receive threshold for the signal strength of connected nodes, in
order to compensate for unusual levels of local interference.
Noise Immunity
is
Disabled
by default, and Fortress
recommends retaining the default, unless operating conditions
require a change.
3.3.2.11
Configuring Individual Radio Settings:
Table 3.5 shows which
Radio Settings
appear in the two GUI
views.
1
Log on to the Bridge GUI through an
Administrator
-level
account and select
Configure
->
Radio Settings
from the
menu on the left.
2
If you are configuring one or more Advanced View settings
(see Table 3.5), click
ADVANCED
VIEW
in the upper right
corner of the page. (If not, skip this step.)
3
In the
Radio Settings
screen’s
Radio Settings
frame, enter
new values for those settings you want to configure
(described in sections 3.3.2.1 through 3.3.2.10, above).
Table 3.5. Radio Settings
Simple & Advanced Views
Advanced View Only
Admin. State
Network Type
Band
Beacon Interval
Channel
Distance
Noise Immunity
Antenna Gain
TxPower
Short Preamble
Channel Exclusions