[29956] in North American Network Operators' Group
Re: ISP performance
daemon@ATHENA.MIT.EDU (Rajesh Talpade)
Mon Jul 10 17:07:14 2000
From: Rajesh Talpade <rrt@research.telcordia.com>
Message-Id: <200007102105.RAA00930@vagrant.research.telcordia.com>
To: sean@donelan.com (Sean Donelan)
Date: Mon, 10 Jul 2000 17:05:07 -0400 (EDT)
Cc: rrt@research.telcordia.com, nanog@merit.edu
In-Reply-To: <20000710205037.9332.cpmta@c004.sfo.cp.net> from "Sean Donelan" at Jul 10, 2000 01:50:37 PM
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Errors-To: owner-nanog-outgoing@merit.edu
>
>
> "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
