This is how I am setting the size of a droptail queue:
$ns queue-limit $n1 $n2 $X
I am seeing behavior where for 1 <= $X <= ~180 everything works fine.
If you push X to say 200, then suddenly there are no more packet drops,
and there always appears to be 183-186 packets in the queue.
What I am trying to simulate is the rule of thumb buffer sizing which is
2*BandwidthDelayProduct which for high speed links is on the order of
thousands of packets.
I've been through queue.cc, queue.h, drop-tail.h and drop-tail.cc and
can't figure out what's going on.
Any thoughts?
~Ethan