hello 
i am writing a DDOS mitigation for openflow networks using pox controller and 
open vSwitch version 1.9. as DDOS attacks aim at Flooding flow tables and input 
buffers, i wonder what is the maximum capacity of each switch port input 
buffer. i know after the switch input buffer overflows then the switch sends 
the whole packet to the controller and then the controller responses by sending 
packet out message which contains the whole packet and also the action.
i want to know how much data and at what rate should a host send data to 
overflow a switch port input buffer and if is it possible to change the switch 
port input buffers? is it possible to change the amount of time that a packet 
stays in buffer before timeouts?
thanks 


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