Split flows across Domains

Tue Jan 24 18:09:08 UTC 2006

Joe Abley <jabley at isc.org> writes:

> On 24-Jan-2006, at 12:07, Robert E.Seastrom wrote:
>
>> He said "via two different autonomous domains", which I took to mean
>> two upstreams... and my understanding is that (on ciscos anyway)
>> you're talking per-packet, not per-flow load balancing.
>
> If you can get two candidate routes for the same destination into the
> FIB, then you'll get per-flow load balancing as long as CEF is
> running, no?

Yes and no.  CEF is {src, dst} hash IIRC, and "per-flow" usually means
{src, srcport, dst, dstport, [proto, tos]} hash in my experience.

                                        ---Rob