Wireless LAN – WLAN
86
3.4
Configuration of WLAN parameters
BAT54-Rail/F..
Release
7.54
06/08
66.6 Kµs WLAN-3. At the start of a new beacon period, transmission
starts again with WLAN-1.
D Simple burst: In this mode the access point always transmits the bea-
cons for the WLAN networks in the same order. The first beacon trans-
mission (0 Kµs) is WLAN-1, WLAN-2 and WLAN-3; the second
transmission is in the same order, and so on.
D Default: Cyclic
Some older WLANs are unable to process the quick succession of bea-
cons which occur with simple burst. Consequently these clients often rec-
ognize the first beacons only and can only associate with this network.
Staggered transmission of beacons produces better results but increases
load on the access point's processor. Cyclic transmission proves to be a
good compromise as all networks are transmitted first in turn.
U The transmission table
The transmission settings regulate variables such as the packet size for
WLAN communications and minimum and maximum transmission speeds.
Transmission properties can also be improved with the number of repetitions
for packet transmission:
D Hard retries
This value defines the number of times that the hardware should attempt
to send packets before a Tx error message is issued. Smaller values
mean that a packet which cannot be sent blocks the sender for less time.
D Default: 10
D Soft retries
If the hardware was unable to send a packet, the number of soft retries
defines how often the system repeats the attempt to transmit.
The total number of attempts is thus (soft retries + 1) * hard retries.
The advantage of using soft retries at the expense of hard retries is that
the rate-adaption algorithm immediately begins the next series of hard
retries with a lower datarate.
D Default: 0
Configuration tool Call
WEBconfig, Telnet Expert Configuration > Setup > Interfaces > WLAN > Transmission
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