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Linksys
Data - Advanced Settings Screen
Isolation
Isolation
between
Define whether to isolate traffic between SSIDs If
SSIDs
enabled, wireless clients in different SSIDs cannot
communicate with each other Enabled by default
Advanced Parameters
Worldwide
Mode
Worldwide Mode (802 11d) enables the access
(802.11d)
point to direct connected wireless devices to radio
settings specific to where in the world the devices
are in use
Channel Bandwidth
You can select the channel bandwidth manually for
Wireless-N connections When it is set to 20MHz,
only 20MHz channel is being used When it is set
to 40MHz, Wireless-N connections will use 40MHz
channel, but Wireless-B connections and Wireless-G
connections will still use 20MHz channel
Guard Interval
Select the guard interval manually for Wireless-N
connections The two options are Short (400
nanoseconds) and Long (800 nanoseconds) The
default is Auto
CTS Protection Mode CTS (Clear-To-Send) Protection Mode boosts
the access point's ability to catch all Wireless-G
transmissions, but it severely decreases performance
By default, CTS Protection Mode is disabled, but the
access point will automatically enable this feature
when Wireless-G devices are not able to transmit
to the access point in an environment with heavy
802 11b traffic
Beacon Interval
The access point transmits beacon frames at
regular intervals to announce the existence of the
wireless network Enter the interval between the
transmissions of beacon frames The value range is
between 40 and 1000 milliseconds and default is
100 milliseconds
DTIM Interval
Enter the Delivery Traffic Information Map (DTIM)
period, an integer from 1 to 255 beacons The
default is 1 beacon
The DTIM message is an element included in some
beacon frames It indicates which client stations,
currently sleeping in low-power mode, have data
buffered on the access point await-ing pickup
The DTIM period that you specify indicates how
often the clients served by this WAP device should
check for buffered data still on the access point
awaiting pickup
For example, if you enter 1, clients check for buffered
data on the access point at every beacon If you
enter 10, clients check on every 10th beacon
RTS Threshold
Enter the Request to Send (RTS) Threshold value, an
integer from 1 to 2347 The default is 2347 octets
The RTS threshold indicates the number of octets
in a Medium Access Control Protocol Data Unit
(MPDU) below which an RTS/CTS handshake is not
performed
Changing the RTS threshold can help control traffic
flow through the access point, especially one with a
lot of clients If you specify a low threshold value, RTS
packets are sent more frequently, which consumes
more bandwidth and reduces the throughput of the
packet However, sending more RTS packets can help
the network recover from interference or collisions
that might occur on a busy network, or on a network
experiencing electromagnetic interference
CHAPTER 2 Access Point Setup
25
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