RTS Threshold is used to enable/disable RTS/CTS mechanism in NetSim. RTS/CTS is enabled if RTS Threshold value is set less than or equal to the MAC frame size. RTS-CTS is disabled if RTS Threshold value is set greater than the MAC frame size. 


For eg: 

For an application layer packet of size 1460 running UDP, the frame size at MAC will be 1488 bytes (1460 bytes + 8 bytes (UDP overhead) + 20 bytes (IP overhead)), RTS/CTS will be enabled if RTS Threshold is set to a value less than or equal to 1488. 


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