[asterisk-ha-clustering] New HA setup

[Olle E. Johansson]

3 nov 2009 kl. 02.35 skrev Frederic Jean:

> Is this something "standard" in a HA Asterisk solution? Has anybody  
> tried something similar?
> Any comments are appreciated!

There are basically two different schools. The one you describe is  
focused on Asterisk and is based on realtime/dundi. The other one  
focuses on SIP and builds an extensible SIP network based on SIP  
proxys that load balance SIP traffic to a set of Asterisk servers. In  
this case, Asterisk doesn't receive registrations and doesn't "own"  
devices. On the other hand, you can easily add other SIP applications  
than voice. Video, presence, instant messaging...

Asterisk is a great platform, but only for telephony and since it's  
call stateful, it doesn't scale as easily as a SIP proxy. The  
combination is great. This is how I built platforms for service  
providers during many years, and this is also what we teach in the  
Asterisk SIP Masterclasses.

Since I need SIP scalability, I haven't focused on realtime/DUNDI. I  
personally feel that the realtime/SIP implementation needs love to  
work properly and that DUNDI is a bit limited to Asterisk. Nothings  
stops other products from implementing DUNDI, but so far, no one has  
been interested.

Regards,
/Olle