lab testing: simulation of cross-traffic 


simulated cross-traffic by SmartBits/SmartFlow

basic parameters:
number of flows, N
packet size for each flow (constant), p
order of flows round-robin to approximate pseudo-random traffic
percentage of the link utilization, 10% < u < 90%
burst size, b <= N 

application 
sends b flows back-to-back (burst)
takes time t
waits for time d = t*(100-u)/u
repeats the burst, cycling the pre-determined flows

link transmits bits for u% of the time on average