[Asterisk-Users] load balancing 20 asterisk servers

[Roy Sigurd Karlsbakk]

>>> For growth, all you do is add more SER and more Asterisk boxes.
>> Are you sure one SER box won't be sufficient?
>
> Makes sense to me to have these TWO - you can take one of those 
> off-line
> without interrupting service, and that's the entire idea of this
> discussion, isn't it? ;->

Yeah
Get two cisco load balancers. One of them _will_ fail.
Put them in front of two SER boxes, crossover connected.
Get a gigabit switch with a good backplane
Put your  asterisk servers behind the SER
Play :)