VoIP Mailing List Archives

[ashley.ohq at gmail.com]

Hi,

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 solution?

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
systems.

Are there recommendations for load balancing solutions? Either soft or hardware?

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 load.


Thanks
Ash

[tristan at telemaque.fr]

Hi Ashley,

One easy solution is to use a SIP proxy (opensips/kamailio/...) in front of FS boxes to load balance the charge between boxes.

FS already has mechanisms to limit number of calls per boxes ( in switch.conf.xml: max-sessions and sessions-per-second ),
that you can couple to load_balancing modules of the sip proxies.

Of course you'll have to test to know how many session one box can handle, has it depends a lot on your usage of FS.

Don' hesitate to join us on IRC if you want to discuss it

Regards,

Gled

Ashley van Gerven a écrit :

[solko at gcdf.pl]

Ashley van Gerven pisze:

[brian at freeswitch.org]

On Apr 2, 2009, at 4:13 AM, Szymon Olko wrote:

[solko at gcdf.pl]

Brian West pisze:

[brian at freeswitch.org]

what kind of hardware?

/b

On Apr 2, 2009, at 2:29 PM, Szymon Olko wrote:

[solko at gcdf.pl]

Brian West pisze:

[red.rain.seven at gmai...]

How do you load balance conference calls? Doesn't all the conference members have to be on the same freeswitch server?

On Thu, Apr 2, 2009 at 1:07 PM, Szymon Olko <solko@gcdf.pl> wrote:

[solko at gcdf.pl]

Henry Huang pisze:

[pablosaro at gmail.com]

Hi Ashley,

A very simple HA solution can be achieved by using SRV. But according to your email, the solution that comes to my mind is the following:

PSTN Gw --> OpenSIPs stateless w/ dispatcher module --> many FS boxes

And if you want a balanced distribution of the calls, you can write a piece of code to keep statistics of your active sessions in a db. Each time a call arrives to a FS box, you trigger your piece of code to store a session record in a db and when the call ends you update the statistics in the db.
This way, OpenSIPs can ask this db before making the decision where to route an incoming call.
Fail over? If OpenSIPs gets a time out, just try with the next FS box.
I hope it helps you.

Pablo

2009/4/2 Ashley van Gerven <ashley.ohq@gmail.com (ashley.ohq@gmail.com)>

[kristian.kielhofner at...]

You could try (although it's somewhat bleeding edge) to use OpenSIPS
1.5 with load_balancer (not heavily tested, btw) in front of some
FreeSWITCH machines:

http://www.opensips.org/html/docs/modules/devel/load_balancer.html

2009/4/2 Ashley van Gerven <ashley.ohq@gmail.com>:

[pablosaro at gmail.com]

Hi Kristian, you're right. Definitively that will be best solution as soon as it's released as stable (it's alpha now).
http://www.opensips.org/index.php?n=Resources.DocsTutLoadbalancing

Pablo

On Fri, Apr 3, 2009 at 6:42 PM, Kristian Kielhofner <kristian.kielhofner@gmail.com (kristian.kielhofner@gmail.com)> wrote:

[grevenx at me.com]

Where do you guys read that it's in alpha?On the opensips.org they proclaim OpenSips 1.5 released,
with that module being one of the new features. I don't see any mention of it being alpha/beta functionality?


Best regards,
Even André

On 4. april. 2009, at 00.30, Pablo Hernan Saro wrote:

[pablosaro at gmail.com]

Not opensips but the module is in alpha. In the modules doc page says
"alpha/new".

Pablo



On 4/3/09, Even André Fiskvik <grevenx@me.com> wrote:

[kristian.kielhofner at...]

Pablo,

It is very cool and a very compelling reason to upgrade/move to
OpenSIPS 1.5. I'm running (mostly) OpenSIPS 1.4.4/1.4.5 now and it's
rock solid (as usual). It's really an excellent complement to
FreeSWITCH!

I will be doing testing with 1.5 and the new load balancer module shortly.

On Fri, Apr 3, 2009 at 6:30 PM, Pablo Hernan Saro <pablosaro@gmail.com> wrote: