> -----Original Message-----
> From: Benny Amorsen [mailto:benny+use...@amorsen.dk]
> Sent: Monday, November 15, 2010 1:30 PM
> 
> If you have the switches do the duplication, you save having to buy a
> dedicated duplication appliance ("load balancer") which itself can be a

correct me if I'm wrong - but I always thought a loadbalancer does *not* 
duplicate traffic...

... at least none of those I have managed to deploy

> single point of failure. This use was not foreseen in RFC 1812, which is

and a switch is not? ;-)

(yes, you can have two - but then you can have two LB's in a cluster...)

> 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

I still believe that resolving application resiliency in the data path is just 
a big fail. Session establishment mechanisms should take care of, natively. 
Unfortunately, not all (and none of those widespread, such as http) do.

> get RFC 1812 updated -- an obvious job for e.g. Stonesoft or Check
> Point.

well maybe, but then don't let users blame Cisco for not supporting those since 
the vendors did not define a standard for such a behaviour.

> /Benny

--

deejay


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