Filter
Top Products
Wireless Network Module for the UTM9S and UTM25S
599
ProSecure Unified Threat Management (UTM) Appliance
3. Specify the settings as explained in the following table:
4. Click Apply to save your settings.
Table 153. Advanced Wireless screen settings
Setting Description
Beacon Interval Enter an interval between 20 ms and 100 ms for each beacon transmission,
which allows the wireless network module to synchronize the wireless network.
The default setting is 100 ms.
DTIM Interval Enter the Delivery Traffic Indication Message (DTIM) interval, also referred to
as the data beacon rate, which indicates the period for the beacon DTIM in
multiples of beacon intervals. This value needs to be between 1 and 255. The
default setting is 2.
RTS Threshold Enter the Request to Send (RTS) threshold. The default setting is 2346 bytes.
If the packet size is equal to or less than the RTS threshold, the wireless
network module uses the Carrier Sense Multiple Access with Collision
Detection (CSMA/CD) mechanism, and the data frame is transmitted
immediately after the silence period.
If the packet size is larger than the RTS threshold, the wireless network module
uses the CSMA with Collision Avoidance (CSMA/CA) mechanism. In this
situation, the transmitting station sends an RTS packet to the receiving station
and waits for the receiving station to return a Clear to Send (CTS) packet before
sending the actual packet data. This method improves the performance but
reduces the throughput.
Fragmentation Threshold Enter the maximum packet size that is used for the fragmentation of data
packets. Packets that are larger than the specified fragmentation length are
broken up into smaller packets before being transmitted. The fragmentation
threshold needs to be an even number. The default setting is 2346 bytes.
Preamble Mode Specify the transmit preamble mode by making a selection from the drop-down
list:
• Long Preamble. A long transmit preamble might provide a more reliable
connection or a slightly longer range. This is the default mode.
• Short Preamble. A short transmit preamble gives better performance.
• Auto Preamble. An automatic preamble gives a better overall performance
by providing both long and short preambles.
Protection Mode Specify the CTS-to-self protection mode (CTS stands for Clear to Send) by
making a selection from the drop-down list:
• None. CTS-to-self protection mode is disabled. This is the default mode.
• CTS-To-Self-Protection. CTS-to-self protection mode is enabled. This
mode increases the performance but reduces the throughput slightly.
Power Save Enable To enable the Wi-Fi Multimedia (WMM) Power Save feature, select the Power
Save Enable check box. This feature saves power for battery-powered
equipment by increasing the efficiency and flexibility of data transmission. Clear
the check box to disable the feature, which is the default setting.