Take the 2-minute tour ×  I am a little confused by the
definition of interarrival time, does it mean the time between
two successfully sent packets? and by using opnet, I observed
that the shorter the interarrival time is, the higher the
network load, is that a correct conclusion? Thanks
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down vote accepted  In short: yes.  Interarrival time is defined
as the time between the "start" of two events. (So if you had a
network capable of processing two packets at the exact same
time, and two packets come in, the interarrival time between
those two packets would be zero.)  It sounds like you have some
sort of monitoring utility measuring interarrival time. In that
case, you should consult the documentation for the tool to see
exactly what their definition is and how they calculate it.
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