Re: [ns] modelling aggregates of on-off sources

[Xiaowei Yang <yxw@cordelia.lcs.mit.edu>]

> you might want to take a look at ~ns/tcl/ex/web-traffic.tcl
> (and the corresponding webtraf.cc) as an example.
> 
> Kun-chan Lan

I noticed webtraf.cc does not model strict  On-Off sources. A new
request may be launched before a page is completed. Depending on your
traffic model, you may want to modify webtraf.cc to schedule a new
request after a page is done. 

> 
> On Sun, 5 Aug 2001, Abbas Makki wrote:
> 
> > Hi all
> > 
> > Having a number of Pareto On-Off sources (eg 100) representing flows. flows are 
> > human triggered, therefore can be assumed Poisson distributed. How may I model 
> > thier start and stop time in ns ?
> > 
> > # start traffic sources 
> > 
> > $ns at " { ??? }" "$source($i) start"
> > 
> > $ns at " { ??? }" "$source($i) stop"
> > 
> > 
> > Shell I In parenthesis write an expression for Poisson disribution or 
> > exponential inter-arrival or what ?
> > 
> > All ideas appreciated. Thank you for any help you may extend.
> > 


	Cheers,
	--Xiaowei