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Beacon Interval
Beacon
frames are transmitted by an access point at regular intervals to
announce the existence of the wireless network. The default behavior is to
send a beacon frame once every 100 milliseconds (or 10 per second).
The Beacon Interval value is set in milliseconds. Type a value from 20 to
2000.
DTIM Period The
Delivery Traffic Information Map
(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 awaiting pick-up.
The DTIM period you specify here indicates how often the clients served by
this access point should check for buffered data still on the AP awaiting
pickup.
The measurement is in beacons. For example, if you set this to “1” clients
will check for buffered data on the AP at every beacon. If you set this to “2”,
clients will check on every other beacon. If you set this to 10, clients will check
on every 10th beacon.
Fragmentation
Threshold
Specify a number between 256 and 2,346 to set the frame size threshold
in bytes.
The
fragmentation threshold
is a way of limiting the size of packets (frames)
transmitted over the network. If a packet exceeds the fragmentation threshold
set here, the fragmentation function will be activated and the packet will be
sent as multiple 802.11 frames.
If the packet being transmitted is equal to or less than the threshold,
fragmentation will not be used.
Setting the threshold to the largest value (2,346 bytes) effectively disables
fragmentation.
Fragmentation involves more overhead both because of the extra work of
dividing up and reassembling of frames it requires, and because it increases
message traffic on the network. However, fragmentation can help improve
network performance and reliability if correctly configured.
Sending smaller frames (by using lower fragmentation threshold) may help
with some interference problems, such as with microwave ovens.
By default, fragmentation is off. We recommend not using fragmentation
unless you suspect radio interference. The additional headers applied to
each fragment increase the overhead on the network and can greatly reduce
throughput.
Field Description