SMC Networks Gateway TTTM5800X - Manual (Page 41)

All Rights Reserved. Copyright 2006 Teletronics International, Inc.
2 Choke Cherry Road, Rockville, MD 20850 Tel: 301.309.8500 Fax: 301.309.8851
If you are not familiar with these Advanced Wireless settings, please read the help section before attempting to modify
these settings.
Fragmentation threshold
Fragmentation Threshold is the maximum length of the frame, beyond which payload must be broken up (fragmented)
into two or more frames. Collisions occur more often for long frames because sending them occupies the channel for a
longer period of time, increasing the chance that another station will transmit and cause collision. Reducing
Fragmentation Threshold results in shorter frames that "busy" the channel for shorter periods, reducing packet error
rate and resulting retransmissions. However, shorter frames also increase overhead, degrading maximum possible
throughput, so adjusting this parameter means striking a good balance between error rate and throughput.
RTS threshold
RTS Threshold is the frame size above which an RTS/CTS handshake will be performed before attempting to transmit.
RTS/CTS ask for permission to transmit to reduce collisions, but adds considerable overhead. Disabling RTS/CTS can
reduce overhead and latency in WLANs where all stations are close together, but can increase collisions and degrade
performance in WLANs where stations are far apart and unable to sense each other to avoid collisions (aka Hidden
Nodes). If you are experiencing excessive collisions, you can try turning RTS/CTS on or (if already on) reduce