ELSA AirLancer ISA-2, Руководство пользователя, Страница: 13 / 23

ELSA AirLancer
10
English
Setting up the
wireless
network cards To enable the wireless network cards to detect one another and exchange data with one
another, the various parameters must have the same values.
Open the network neighborhood with Start
E
Settings
E
Control Panel
E
Network .
Highlight the entry 'ELSA AirLancer MC-2' and choose the properties. Open the register
card 'Advanced' and check the values displayed:
K
Channel (from 1 to 13) must be set the same for all computers in the wireless
network; it can be left at the default setting 'Channel 11'.
By selecting another channel you can operate different wireless networks adjacent
to one another. There are theoretically 14 different channels available, but because
of the frequency overlapping in the DSSS process only three channels can be
implemented without overlapping (1, 6, 13) to operate adjacent to one another
without interference caused by superimposition.
Please note that not all channels in all countries are available for private use (see table
with radio channels in the appendix).
K
LLC Type remains at 'IEEE 802.11' for all computers.
K
Operating Mode is set to 'ad hoc' in a peer-to-peer network.
K
Packet Size remains at the default value of '1550' for all computers.
At Packet Size you set the length of the individual data packets that are sent over
the wireless network. Values from 50 to 1600 bytes are possible. Larger packets
must be taken apart before transfer (fragmented) and reassembled at the receiver
(assembled).
Small packets can allow more reliable transfers in interference-prone environments,
but the proportion of useful data to management information is less.
K
WLAN Domain can be freely selected. This value must also be the same for all
computers and base stations in the wireless network.
Change this value on all radio stations from the default 'ELSA' to any other value as soon
as possible, because the WLAN Domain is used to protect your wireless network against
unauthorized access as with a password.