NETGEAR UTM5 Reference Manual page 565

ProSecure Unified Threat Management (UTM) Appliance
Figure 331.
3. Specify the settings as explained in the following table:
Table 149. Advanced Wireless screen settings
Setting
Beacon Interval
DTIM Interval
RTS Threshold
Fragmentation Threshold Enter the maximum packet size that is used for the fragmentation of data
Description
Enter an interval between 40 ms and 3500 ms for each beacon transmission,
which allows the wireless module to synchronize the wireless network. The
default setting is 100 ms.
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.
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
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 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.
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.
Wireless Module for the UTM9S
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