Wireless (for ISA550W and ISA570W only)
Advanced Radio Settings
Cisco ISA500 Series Integrated Security Appliances Administration Guide
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RTS Threshold:
The RTS threshold determines the packet size that requires
a Request To Send (RTS)/Clear To Send (CTS) handshake before sending. A
low threshold setting can be useful in areas where many client devices are
associating with the wireless device, or in areas where the clients are far
apart and can detect only the access point but not other clients. Although a
low threshold value consumes more bandwidth and reduces the throughput
of the packet, frequent RTS packets can help the network recover from
interference or collisions. Set the threshold by entering the packet size in
bytes. Enter a value from 1 to 2347. The default value is 2347, which
effectively disables RTS.
•
Fragmentation Threshold:
The fragmentation threshold is the frame length
that requires packets to be broken up (fragmented) into two or more frames.
Setting a lower value can reduce collisions because collisions occur more
often in the transmission of long frames, which occupy the channel for a
longer time. Use a low setting in areas where communication is poor or
where there is a great deal of radio interference. Set the threshold by
entering the frame length in bytes. Enter a value from 256 to 2346. The
default value is 2346, which effectively disables fragmentation.
STEP 3
Click
Save
to apply your settings.
