[Freeswitch-users] FS failover redundancy & load balancing

Ashley van Gerven ashley.ohq at gmail.com
Thu Apr 2 00:08:44 PDT 2009


I can't find much info on setting up a redundant or heavy load FreeSwitch
implementation. Are there any
links apart from: http://wiki.freeswitch.org/wiki/Enterprise_deployment ?

I imagine the entry level solution is to have two FS boxes configured
identitcally, with
redundant SBC software (recommendations?) in front, passing the calls to the
primary FS box,
or the backup FS box if the primary is not responding. Is that the easiest

What about a situation of having a level of concurrent calls beyond what one
FS box can handle? I realise
that would be a very large number of concurrent calls, but we would need a
good plan on how to scale the

Are there recommendations for load balancing solutions? Either soft or

My guess would be having 3 + 1 spare FS servers would work, where calls are
distributed accross 3 FS boxes
by a load balancer with one spare in event of failure.

Also how would a FS box at max capacity behave? Does FS monitor available
resources and reject the
excess calls that it can't handle? Or would the load balancer have to be
configured with the maximum number
of calls per box?

Would love to hear some experiences of deploying FS with failover & high

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