Split flows across Domains

Tue Jan 24 12:44:18 UTC 2006

Glen Kent <glen.kent at 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