LANCOM L
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300 Access Point Serie
Chapter 5: Advanced wireless LAN configuration
64
EN
Thus it is recommended for the 5 GHz band that one central access point
should be configured as 'Master' and all other point-to-point partners should
be configured as 'Slave'. In the 2.4 GHz band, too, this setting simplifies the
establishment of point-to-point connections if the automatic channel search
is activated.
It is imperative that the channel selection scheme is configured cor-
rectly if the point-to-point connections are to be encrypted with
802.11i/WPA (a master as authentication server and a slave as client).
5.3.1
Geometric dimensioning of outdoor wireless network links
The following basic questions must be answered when designing wireless
links:
Which antennas are necessary for the desired application?
How do the antennas have to be positioned to ensure problem-free con-
nections?
What performance characteristics do the antennas need to ensure suffi-
cient data throughput within the legal limits?
Selection of antennas using the LANCOM Antenna Calculator
You can use the LANCOM Antenna Calculator to calculate the output power
of the access points as well as the achievable distances and data rates. The
program can be downloaded from our Web site at
www.lancom.eu
.
After selecting your components (access points, antennas, lightning protec-
tion and cable) the calculator works out the data rates, ranges, and the
antenna gain settings that have to be entered into the access point.
MASTER
ANTENNE
SLAVE
ANTENNE
SLAVE
ANTENNE
