[SR-Users] Kamailio Load Balancer Architecture

[Daryn Johnson]

I am interested in opinions and suggestions about load balancing with
Kamailio.  I work for an ITSP that currently uses Oracle & Broadsoft, and I
am working to design and develop an open source solution using Kamailio
(Proxy, Registrar, LB) &  other Application/Media servers for more
flexibility and freedom :)  Thank you ALL for the work you have put in on
Kamailio!

After much reading and configuration I have a Kamailio 'proxy' setup, with
endpoints registered using the Registrar module, and calls being
sent/received to/from the PSTN. I am interested in separating the Load
Balancers from the Registrars & logic, for security and in order to be able
to scale appropriately.  I will be using the dispatcher module for both
load balancers and proxies using the following architecture:

PublicIP = 5.5.5.5; Private IP = 192.168.1.0/24

USERS (Public Internet) ==> (public: 5.5.5.5)  [ Kamailio (LoadBalancer,
Firewall, Sanity Checks) ] (core:192.168.1.2) ==> [ Kamailio Registrar,
Proxy, PSTN GW ] ==> AppServers or PSTN GW

(we can access our PSTN gateways Via our Core using Private IPs)

Questions:
1) Is it overkill to separate the LB & Proxy/Registrars?
2) Is this a common architecture & anyone configured this architecture
successfully?

Thanks in advance for your help!


*Daryn Johnson*


*Senior VoIP Engineer*
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