[40750] in North American Network Operators' Group
Re: Routescience?
daemon@ATHENA.MIT.EDU (Sean Finn)
Tue Aug 21 03:18:49 2001
Message-ID: <3B8209FA.9C359F60@speedtrak.com>
Date: Tue, 21 Aug 2001 00:12:58 -0700
From: Sean Finn <seanf@routescience.com>
MIME-Version: 1.0
To: Randy Bush <randy@psg.com>
Cc: Sean Finn <seanf@routescience.com>,
Vadim Antonov <avg@exigengroup.com>, Irwin Lazar <ILazar@tbg.com>,
"'nanog@merit.edu'" <nanog@merit.edu>
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Errors-To: owner-nanog-outgoing@merit.edu
Randy Bush wrote:
> > Vadim,
> >
> > we recognize, and appreciate your concerns.
> >
> > Two major points with regard to the PathControl product,
> > and it's impact on the BGP environments:
> >
> > 1) PathControl is currently targeted toward providing
> > optimized egress routes to multihomed enterprises.
> > Our technology is applicable to core routing, but
> > we certainly acknowledge the constraints in that
> > environment are radically different ...
> >
> > 2) We've integrated extensive anti-flapping capabilities
> > into the product, and in addition have user-configurable
> > settings for maximum rate of route change.
> >
> > Given a high rate of changing performance measurements, the box
> > is capable of generating routing decisions at a high rate.
> > Our analysis (and default settings) show that significant
> > performance gains can be realized with a rate of change in
> > typical deployments less than ~100 prefix changes per hour.
> > (And maximum rates can be constrained lower than this,
> > if desired.)
>
> you're doing releasing just the perfect kind of sheep to graze the routing
> commons of which i have been speaking, for example see
> <http://psg.com/~randy/010809.ptomaine.pdf>,
>
> folk, it's time to get those prefix length filters in before the real
> /22-/24 pollution gets really crazy.
Randy,
please allow me to make clear ...
The PathControl product does *not* add routes to anyone's table;
it merely provides multihomed "leaf AS's" the ability to make
informed decisions about how to use the routes that their service
providers give to them.
