man, 15 11 2010 kl. 12:08 +0000, skrev Tomas Daniska:
> And I don't find it brilliant - why on earth I should multiply an unicast
> request?
If you want to have two servers handle a request in lockstep, you need
to duplicate it. Pretty much by definition.
If you have the switches do the duplication, you save having to buy a
dedicated duplication appliance ("load balancer") which itself can be a
single point of failure. This use was not foreseen in RFC 1812, which is
hardly surprising; many other features which we take for granted today
were not foreseen back then. The only problem is that no one bothered to
get RFC 1812 updated -- an obvious job for e.g. Stonesoft or Check
Point.
/Benny
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