Jung WLAN-AC-POE-UAE, Продуктовая документация

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8
WLAN Access Point · Introduction
In the event of a malfunction, you can keep track of and access the devices and increase
the reliability of your system !
• Document the IP addresses, the associated MAC addresses (rating plate and label),
the installation location, the firmware version as well as the associated passwords
and access data for a possible service case (see also page 51 or title page).
Settings
WLAN settings
The less WLAN devices can ‘hear’ each other in the WLAN network, the higher the perfor-
mance. If there is a long distance between WLAN devices or if an older WLAN device with
low bandwidth (e.g. in accordance with IEEE 802.11-b) is connected to the WLAN Access
Point, the transmission rate is automatically adapted to the performance of this application.
Higher data rates will then not be available for closer or more powerful devices.
• Choose a channel that is hardly used in its environment.
• If necessary, adjust the channel spacing of the devices (a distance of four channels
is optimal).
• If necessary, adjust the transmit power and, with this, the sensitivity of the WLAN
Access Point to avoid overlapping (as few as necessary).
• Look for identical encryption algorithms on ‘all’ WLAN devices.
WPA is out of date,
no longer safe and no longer allowed for new equipment!
The operating bandwidth can be switched internally from 20 to 40 MHz. This doubles the
data rate. For physical reasons, however, the range is reduced to half, so that this setting is
suitable only for short distances.
Roaming settings
(see examples on page 26 et seq.)
Easy roaming can be ensured with the same SSID of all access points / routers in the net-
work, as well as with different SSIDs. After a single sign on mobile devices to an access
point, the devices remember the credentials and automatically switch to the strongest signal
in the environment when the signal is weak.
This switching threshold can usually not be changed in the devices or depends on the
manufacturer / operating system – changeover usually occurs only with a very weak signal
(-70 dB).
With several SSIDs, it is easier to check, in the case of transmission problems, if the
device is really logged in to the nearest access point. A performance improvement may be
achieved by selecting a stronger access point.
Basic information on interfaces
This manual often mentions the use or the specification of interfaces. Basically, two types
are distinguished (see figure below):
- External interfaces, e.g. front socket (RJ45) on the hardware side
- Internal functional interfaces, e.g. additional transceiver units for guest access or
repeater function
Note:
The described facts
are due to physical /
technical conditions
and not a feature of the
WLAN Access Point.
Note:
With SSID, it is
assumed that within a
network there is only
one access point that
maps the router. If
there are several SSIDs
within a network, which
may then be the same,
this is called ESSID.
For simplicity’s sake,
these instructions
always refer to SSID.