[Tmrg] Round-table PFLDnet submission

[Lachlan Andrew]

Greetings Wang,

On 22/11/2007, Wang gang <wanggang at research.nec.com.cn> wrote:
>
> I think the basic scenarios which we have agreed on is
>
> Topology: Dumb-Bell with three nodes at each side,
>                  Parking-Lot with up to three bottleneck,
>                  BW, RTT, buffer size settings
> Background traffic, cross traffic distributions.
> Collected metrics.
>
> Is that enough?

>From memory, the parking-lot was not part of the "basic scenarios" --
that was a separate scenario.  They were all dumbbell with three nodes
at each side.  The "basic scenarios" section will describe which
combinations of
a) RTT-distribution
b) BW
c) buffer size (packets? bytes?)
d) AQM (RED? Droptail?)
d) ratio of forward-traffic to reverse-traffic
e) ratio of long-lived flows to transient flows
to study.  We can study all possible combinations.

You, Larry and Lars have the hard job of writing a first-draft of
working out how many combinations we can study (in Sally's "three days
of simulation") and how we can choose the most representative
scenarios.

Perhaps start by listing the possible values for each, and then
eliminating any combinations that are unlikely (like low BW links with
less than one RTT worth of delay).

On possibility would then be to choose one or two "typical" set of
parameters, and have a set of tests which varies only one of the
parameters from that "typical" list.  Do the sums to see how many
tests you end up with to work out how many "typcial" sets will be
needed.  What do people on the list think of that approach?

Cheers,
Lachlan

-- 
Lachlan Andrew  Dept of Computer Science, Caltech
1200 E California Blvd, Mail Code 256-80, Pasadena CA 91125, USA
Ph: +1 (626) 395-8820    Fax: +1 (626) 568-3603
http://netlab.caltech.edu/~lachlan