[65500] in North American Network Operators' Group
Re: Worm Bandwidth [was Re: Santa Fe city government computers
daemon@ATHENA.MIT.EDU (Stephen J. Wilcox)
Fri Nov 28 21:19:35 2003
Date: Sat, 29 Nov 2003 02:18:56 +0000 (GMT)
From: "Stephen J. Wilcox" <steve@telecomplete.co.uk>
To: Daniel Senie <dts@senie.com>
Cc: nanog@merit.edu
In-Reply-To: <6.0.1.1.2.20031128183233.0235ed10@mail.amaranth.net>
Errors-To: owner-nanog-outgoing@merit.edu
On Fri, 28 Nov 2003, Daniel Senie wrote:
> At 06:24 PM 11/28/2003, Sean Donelan wrote:
>=20
> >On Sat, 29 Nov 2003, Petri Helenius wrote:
> > > If you are an access provider, specially in the consumer space, you c=
an
> > > do many things to help the "Greater Internet" by keeping your own bac=
k
> > > yard in good shape. In the transit business, you are expected to
> > > deliver the bits regardless of the content so there the only viable
> > > option is to drop packets where the source or destination addresses
> > > don=B4t make sense.
> >
> >What is the difference between a transit provider and an access provider=
,
> >specially in the consumer space? Why is a transit provider expected to
> >deliver the bits, but the access provider isn't? Since the bulk of
> >Internet access is actually provided by wholesale providers (e.g.
> >AOL/Earthlink buy wholesale modem access from UUNET/Level3), who is
> >the access provider and who is the transit provider?
>=20
> And how do you handle the situation where a provider is both? UUNet, for=
=20
> example, sells LOTS of T-1 lines to non-ISP businesses, and sells retail=
=20
> dialup services to consumers. Sure they also sell wholesale bandwidth and=
=20
> wholesale dialup services to ISPs, but it's not their whole business.
>=20
> The problem isn't "someone else's problem" for anyone.=20
Clearly you can apply checks to parts of your network (stub bits) such as y=
our=20
dialup pool etc where can be sure about what src/dst addresses are fake, ie=
the=20
access part of your business
Steve
