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Chapter 4 - Web-managed Configuration
Default Key – Selects the key number to use for encryption. The key indicated by
the default key selection must be configured with the same value in the AP and in
the SU-A-EZ in order for the link to work (Default: Key 1.)
WEP Keys – If the wireless network you are connecting to uses WEP security, you
need to enter the WEP key provided to you by the network operator.
WEP provides a basic level of security, preventing unauthorized access to the
network, and encrypting data transmitted between the SU-A-EZ and AU-EZ. WEP
uses static shared keys (fixed-length hexadecimal) that are manually distributed
to all clients that want to use the network.
Enter "0x" followed by 32 hexadecimal digits (0 to 9 and A to F) for 152 bit keys.
NOTE
All wireless devices must be configured with the same WEP Key values to communicate with an
AU-EZ.
RTS Threshold – Sets the packet size threshold at which a Request to Send (RTS)
signal must be sent to a receiving station prior to the sending station starting
communications. The SU-A-EZ sends RTS frames to a receiving station to
negotiate the sending of a data frame. After receiving an RTS frame, the station
sends a CTS (clear to send) frame to notify the sending station that it can start
sending data.
If the RTS threshold is set to 20, the SU-A-EZ always sends RTS signals. If set to
2347, the SU-A-EZ never sends RTS signals. If set to any other value, and the
packet size equals or exceeds the RTS threshold, the RTS/CTS (Request to Send /
Clear to Send) mechanism will be enabled.
The SU-A-EZs contending for the medium may not be aware of each other. The
RTS/CTS mechanism can solve this "Hidden Node Problem." (Range: 20-2347
bytes: Default: 60 bytes)
Transmit Power Level – Adjusts the power of the radio signals transmitted from
the SU-A-EZ. The higher the transmission power, the farther the transmission
range. Power selection is not just a trade off between coverage area and maximum
supported clients. You also have to ensure that high-power signals do not
interfere with the operation of other radio devices in the service area. (Options:
Full, Half, Quarter, Eighth, Min (0 dBm); Default: Full)
Modulation Type – Sets the modulation type to limited or fixed. (Default: limited)
Link Rate – The maximum data rate at which the SU-A-EZ transmits unicast
packets on the wireless interface. The maximum transmission distance is affected
46
Operation
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