Re: types of traffic in tcp congest control

Joe Touch <touch@ISI.EDU> Wed, 15 May 2002 06:48 UTC

Message-ID: <3CE204DA.4000101@isi.edu>
Date: Tue, 14 May 2002 23:48:58 -0700
From: Joe Touch <touch@ISI.EDU>
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To: Anumita Biswas <BAnumita@novell.com>
Cc: jinw@comp.leeds.ac.uk, tcp-impl@lerc.nasa.gov, alan@lxorguk.ukuu.org.uk, dotis@sanlight.net
Subject: Re: types of traffic in tcp congest control
References: <sce1ac57.083@prv-mail25.provo.novell.com>
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Anumita Biswas wrote:
> Can the arguments about disk drives, memory capacity be really extended
> to core, highly shared Internet links? Has the provisioning of core
> links ever exceeded the rate at which the number of internet users are
> increasing. 
> 
> Also, should we not also consider the "bandwidth" of the core
> routers/switches, that is the rate at which their ability to
> route/switch packets is increasing versus the rate at which they are
> pumped with packets? Can that ability be overprovisioned quickly
> enough?

How much of what a user perceives as congestion is core? At least some 
is related to the user's access or webserver load.

Consider the telephone network - it is basically overprovisioned at the 
core. Excepting Mothers' Day and the like, the core doesn't experience 
congestion per se. At least not much anymore.

Joe