Re: ISP performance

[Rajesh Talpade <rrt () research telcordia com>]

> "Well-engineered" is a loaded term, and presumes unchanging routes are
> always the best way to engineer a network.  With ATM, MPLS and other
> provider games the IP-level path may have very little to do with where
> your packets go.

perhaps my question was somewhat misleading...

i was not implying that unchanging routes are good or bad. 
i was trying to understand with what confidence i can determine
the IP route between two PoPs at any given instant. _well-engineered_
was meant to imply the isp has control over their network, and
make controlled changes if required.

thanks for the pointer.

rajesh.

 
> What you are looking for is the work done at MERIT and later the Skitter
> project at CAIDA.  See www.caida.org for more infomation.
>
>
> On Mon, 10 July 2000, Rajesh Talpade wrote:
> > At the risk of making a possibly naive request, could 
> > someone point me to data on ISP network performance 
> > (routing stability, packet loss, latency) ? I am 
> > primarily interested in the first metric, and am 
> > trying to understand the relative stability of large,
> > _well-engineered_ ISP networks. In other words, with
> > what degree of confidence can I predict the IP-level
> > path between two PoPs of a large ISP. Please note 
> > that I am not getting into the general Internet 
> > performance here.
> >
> > Somehow I get this feeling that the answer would be
> > a fairly large...it depends ! It would be useful to
> > understand the influencing factors as well.


-- 
Rajesh R. Talpade rrt () research telcordia com 973 829-4261
Telcordia Technologies