[85841] in North American Network Operators' Group
Re: IPv6 news
daemon@ATHENA.MIT.EDU (Paul Jakma)
Tue Oct 18 10:04:28 2005
Date: Tue, 18 Oct 2005 15:07:02 +0100 (IST)
From: Paul Jakma <paul@clubi.ie>
To: Andre Oppermann <nanog-list@nrg4u.com>
Cc: Michael.Dillon@btradianz.com, nanog@merit.edu
In-Reply-To: <Pine.LNX.4.63.0510181349030.3396@sheen.jakma.org>
Mail-Copies-To: paul@hibernia.jakma.org
Mail-Followup-To: paul@hibernia.jakma.org
Errors-To: owner-nanog@merit.edu
On Tue, 18 Oct 2005, Paul Jakma wrote:
> If you want to focus on the differences between IP and POTS/GSM, sure,
> they're completely different. However, the point is to examine the abstract
> model for how telcos manage to achieve number portability without
> global-scope exchange of subscriber information and see what, if any,
> techniques could apply to IP.
Eg, given some arbitrary area:
- RIR assigns a prefix to that area
- For that area, for the set of ISPs providing service in that
area (the area-ISP set) which are all peered with each other (eg at some IX in or near the area
concerned), each ISP:
- announces the area prefix as far and wide as they can
(doing so will be an advantage for settlement with the
other area-ISP set ISPs)
- exchanges very very specific routes of:
area-site -> AS
with the other area-ISP set ISPs (if they peer locally,
they can keep these very specific routes local too)
- keep track of how much traffic to the area-prefix is handed
off to other area-ISP set ISPs (and to which, obviously),
and how much is received.
- periodically, for every other area-ISP, reconcile traffic
handed off / received and either send your or wait for
their invoice as appropriate.
Fraught with some difficulties obviously. (Politics of settlement,
particularly when there is no benevolant entity to arbitrate and/or
impose - before you ever get to the question of how to define an
"area").
If it seems too difficult and the status quo is preferred - no
worries, the hosts will figure out some kind of indirection. Bit less
efficient than if ISPs would route natively/locally, but hey it won't
require any difficult decisions and co-ordination in the ISP
community.
And maybe that'd be for the best. ;)
regards,
--
Paul Jakma paul@clubi.ie paul@jakma.org Key ID: 64A2FF6A
Fortune:
Nowlan's Theory:
He who hesitates is not only lost, but several miles from
the next freeway exit.
