[12520] in North American Network Operators' Group
Re: Traffic Engineering (fwd)
daemon@ATHENA.MIT.EDU (Avi Freedman)
Thu Sep 18 20:19:14 1997
From: Avi Freedman <freedman@netaxs.com>
To: smd@clock.org (Sean M. Doran)
Date: Thu, 18 Sep 1997 19:50:55 -0400 (EDT)
Cc: ekgermann@cctec.com, smd@clock.org, osborne@terra.net, nanog@merit.edu
In-Reply-To: <yt7mcel11t.fsf@cesium.clock.org> from "Sean M. Doran" at Sep 18, 97 06:17:18 pm
> P.S.: Curtis Villamizar had another interesting approach
> which involved pushing content far afield to
> machines with the same transport-layer (IP)
> addresses, relying upon closest-exit routing to
> connect one to the topologically-closest replication
> machine. Unfortunately, while this could be really
> cool for NSPs to offload stuff towards peering
> points (public or private), it also has some poor
> scaling properties and is uncomfortably reliant
> upon the stability of routing.
>
> If he's done any more thinking about the idea,
> I'd love to hear about it though.
I don't know about Curtis, but others have solved this problem
(in theory) recently.
We at Net Access have figured out a way (we believe) to get
around the stability-of-routing issue for already-established
TCP sessions in the above approach (multiple machines with the
same IP externally, plus an internally different IP, each
running gated to announce their /32(s) to your IGP) -
hint: a question I asked on NANOG a few days back -
And Alec Peterson (now of Erols) has figured out an even
arguably slicker way to do it.
I'll see if Merit wants to have Alec and I do a presentation
on the methods @ NANOG.
We should be able to implement our various solutions by then...
Avi
