[Freeswitch-users] Brainstorming load balancing feature - dispatcher & FS

Karsten Horsmann khorsmann at gmail.com
Mon Feb 17 16:15:27 MSK 2014

Hello List,

i read too the nice
Deployment Setups.
Personaly i run FS 1.2.x as Session Border Controller where sip clients
could register and internal (3rd party) IVRs could reachs the clients.

I plan to use DNS SRV on the to scale up the FS Servers and have fault

For that i have to diffrent uplinks that i could use for the DNS SRV
Records and AFAIK i could use track-calls=true in sofia profiles
to track the right incoming/outgoing profile.

The only thing i missed is that my 3rd party IVRs used FS as outbound proxy
and therefore only one IP is spezified on the internal network.

With an virtual IP on the FS side i could solve that but then the FS
servers is IMHO limited to be a active/passiv duo.

Any ideas how to handle that?

2014-02-17 2:45 GMT+01:00 jay binks <jaybinks at gmail.com>:

> So I want to bash out a feature I was thinking of, please can anyone chime
> in some ideas on this.
> So its easy to have OpenSIP / Kamailio ( dispatcher ) send SIP Options to
> FS to see if its responding ..  this is great ...
> My request would be to have some kind of control over the response FS
> Sends back.
> What I would love is to respond with idle CPU , current SPS / Max SPS or
> channels / Max Channels.
> This is only a high level "this would be nice" , so I havnt totally
> thought this through but...
> we would have to provide an ACL for who to provide this back to,  coz I
> wouldnt really want any old guy on the internet sending me options and me
> respond going ... oh yea bro, Im at 90% ... dont have to try hard to DDOS
> Me.. :)
> but yea... if we could give this back to the load balancers, then we could
> easily instruct them to back traffic off to this gateway.
> the next part is , how do you back off the traffic.
> one option is to have FS respond differently if any of these are close to
> thresholds.
> or to provide these values in custom headers, but that would require
> changes in dispatcher ( which is ok I Guess )
> anyways... I wanted some input on peoples thoughts here..
> let me know what you think.
> Jay
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Mit freundlichen Grüßen
*Karsten Horsmann*
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