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Re: Split flows across Domains
From: Joe Abley <jabley () isc org>
Date: Tue, 24 Jan 2006 13:14:57 -0500



On 24-Jan-2006, at 13:09, Robert E.Seastrom wrote:

Joe Abley <jabley () isc org> writes:

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.

Even if the hash is only calculated over source and destination IP addresses, the end effect is still that packets associated with a single flow still follow the same route where there is more than one candidate route available.


Joe


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