Re: [ns] link capacity

[Lloyd Wood <l.wood@eim.surrey.ac.uk>]

On Thu, 29 Nov 2001, H�kan Bystr�m wrote:

> With a bandwidth of only 5000 bits/s it takes 0.32 seconds to send a 200
> byte packet. You have to take this into account when calculating the
> total bits sent within a second since the trace file only shows the time
> when the packet is sent. Am I making myself clear? The last packet you
> added into the total probably had not completely been sent within the
> second.

but if you're working off r events in the tracefile this doesn't
matter, right? The tracefile also shows when the packet is received...

L.

> Meow Chiow Chia wrote:
>
> >     I have a question.  In my simulation, a link
> > between node 0 and node 1 has a bandwith of 5000
> > bits/s, but if I checked the trace file, I noticed
> > that the total number bits that are departured  to the
> > link from the output queue of node 0 (assuming traffic
> > from node 0 to node 1) within one second, actually
> > exceeded 5000bits/sec, i.e. is about 5120 bits/sec.  I
> > am just wondering if anyone could tell me the reason
> > of this .  Your help on this is very much appreciated.
> >
> > p/s:  I set a very huge queue limit, so that there is
> > no buffer overflow

<L.Wood@surrey.ac.uk>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>