Split flows across Domains

Tue Jan 24 18:14:57 UTC 2006

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

> Joe Abley <jabley at 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