The MPLS WG Archive

[Daniela Cunha <daniela@lrc.deene.ufu.br>]

Hi Qingming Ma,

Your dissertation really interested me. In it is possible I would like you to send
me a copy.

Thank you
Daniela Cunha

Qingming Ma wrote:

> In my dissertation work on QoS routing, I used various different traffic
> models for QoS session arrivals, bandwidth requirements, and call
> holding time distributions. You can check out details from my dissertation.
> Let me know if you want to have a copy.
>
> Thank you,
>
> Qingming
>
> At 08:56 AM 5/4/00 -0400, Peter Ashwood-Smith wrote:
> >MPLS wrote:
> > >
> > > Hi all,
> > > We are trying to simulate a workmodel for handling QoS requests.
> > >
> > > In this respect, are there any publicly available traces for real time
> > > call requests that request bandwidth at the ISPs.
> > >
> > > If not, is there some study that says what is a feasible
> > > distribution for the following:
> > > 1. b/w requirement of a QoS call
> > > 2. QoS call request arrival rate
> > > 3. QoS call duration
> > >
> > > Most of the reserach work has been done using uniform ditsribution
> > > for b/w requirement, poisson for arrival rate, and exponential for call
> > > duration.
> > > How close to the real life scenario are these assumptions.
> > >
> > > Thanks in advance,
> > >
> > > Gargi Banerjee
> >
> >   I'm not aware of a source of the data you are looking for however I'd
> >warn you against using any of the nice clean models like poisson etc.
> >You may be able to extrapolate from some existing ATM networks as a
> >starting point.
> >
> >   The rate that LSPs arrive, depart and how long they hold will depend
> >on the applications using them and we cannot easily predict what applications
> >will tend to do with them. Initially you will see REALLY long hold times
> >but these will come down in time as more and more uses for LSPs evolve.
> >
> >   My gut feeling is that LSPs will eventually have behavior like data only
> >at a slower rate. I.e. chaotic, bursty etc.
> >
> >   Cheers,
> >
> >   Peter