[e2e] IP options inserted in transit

Michael Welzl michael.welzl at uibk.ac.at
Wed Aug 20 01:21:12 PDT 2003


I don't know if this makes a difference for your cost/benefit
discussion, but there is one thing I know for sure:

In general, option processing _DOES_ make quite a difference
for a large number of routers that are installed on the
Internet of today.

Over the last three weeks or so, we did some pings (with
and without a NOP option) with several thousands of hosts
across a large range of path lengths, the goal being to
figure out what "quite a difference" exactly means. What
is missing is a statistical analysis - a student is working
on it. We also have data from approx. 2 years ago, so we
will also try to find out if the situation has changed.


On Mon, 2003-08-11 at 18:34, RJ Atkinson wrote:
> On Sunday, Aug 10, 2003, at 17:48 America/Montreal, Vadim Antonov wrote:
> >
> > On Sun, 10 Aug 2003, RJ Atkinson wrote:
> >>
> >> 	Being commercially available is a plausible first order
> >> approximation for having a reasonable cost/benefit ratio, IMHO.
> >
> > I would disagree with that...
> Then maybe you could be A LOT more clear about what you
> mean when you say "cost/benefit ratio" than you have been.
> Which costs ?
> Which benefits ?
> Measured how ?
> Ran
Michael Welzl <michael.welzl at uibk.ac.at>
University of Innsbruck

More information about the end2end-interest mailing list