[88176] in North American Network Operators' Group
Re: Split flows across Domains
daemon@ATHENA.MIT.EDU (Robert E.Seastrom)
Tue Jan 24 07:44:47 2006
To: Glen Kent <glen.kent@gmail.com>
Cc: NANOG list <nanog@merit.edu>
From: Robert E.Seastrom <rs@seastrom.com>
Date: Tue, 24 Jan 2006 07:44:18 -0500
In-Reply-To: <92c950310601240426i22b5e397y481f1b27145202cf@mail.gmail.com> (Glen
Kent's message of "Tue, 24 Jan 2006 17:56:57 +0530")
Errors-To: owner-nanog@merit.edu
Glen Kent <glen.kent@gmail.com> writes:
> For example, an ISP can learn two different equal cost routes to a
> foo.com server via two different autonomous domains. It can thus split
> different flows (based on src-dest IP, src-dest Port, TOS, etc) across
> these two paths.
>
> Do operators currently do this?
>
> Folks can send me replies offline in case this constitues a "trade secret"!
Works great with a flow-based router (or layer-three-switch-pronounced-
'crippled-router'). The downside, of course, is that you now have a
flow-based router in your network, which has been shown to Not Work
Well under other specified conditions (worm outbreaks come immediately
to mind).
---rob
