[asterisk-users] SER Dispatcher Load Balance How-To?

[Douglas Garstang]

Anything is possible. The biggest challenge with OpenSER is getting past the horrible documentation and the cryptic, one line responses to questions asked in the mailing list.

> -----Original Message-----
> From: Adam Linford [mailto:adam.linford at oralnet.co.uk]
> Sent: Wednesday, August 30, 2006 5:33 AM
> To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
> Subject: RE: [asterisk-users] SER Dispatcher Load Balance How-To?
> 
> 
> SER/OpenSER can get around call forwarding/transfer problems. 
>  You just need
> to account for those SIP dialogue's that can be problematic, 
> and bypass
> using the dispatcher module for those situations.  
> 
> One thing to remember is to replicate usr-loc info that is 
> cached in memory,
> otherwise load-balancing for INVITE's will fail if passed to 
> a proxy that
> did not receive the REGISTER request for sending party.  The standard
> t_replicate() function only supports replication between two 
> SER/OpenSER
> proxies, so if you are looking to add in any more, you will 
> need a more
> manual approach.  OpenSER 1.1.0 actually offers the ability to operate
> completely out of a database, even for usr-loc, which could 
> work for you.
> 
> Other approaches for load balancing include DNS round-robin 
> techniques, and
> separate software or hardware appliances dedicated to load 
> distribution.  I
> have successfully worked with Foundry ServerIron's, and 
> Vovida's Open Source
> load-balancing proxy, in the past.
> 
> Cheers,
> Adam
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Douglas
> Garstang
> Sent: 30 August 2006 04:05
> To: Asterisk Users Mailing List - Non-Commercial Discussion;
> asterisk-users at lists.digium.com
> Subject: RE: [asterisk-users] SER Dispatcher Load Balance How-To?
> 
> That might not be a good idea. If you transfer or forward 
> calls on your
> phones, you MUST make sure the transferred or forwarded call 
> goes back to
> the same Asterisk box it was handled on. If you use the 
> dispatcher, and load
> balance, there is no guarantee of that, and transfers and 
> forwarding will
> break.
>  
> Doug.
> 
> 	-----Original Message----- 
> 	From: Andy Chung (Power-All) 
[mailto:andychung at powerallnetworks.com]

	Sent: Tue 8/29/2006 7:49 PM 
	To: asterisk-users at lists.digium.com 
	Cc: 
	Subject: [asterisk-users] SER Dispatcher Load Balance How-To?
	
	

	Hi all,
	
	I have three Asterisk servers behind a SER. I want to know how to
	configure the Dispatcher module of SER to achieve load balance for
the
	Asterisk servers. I have visited
	http://www.openser.org/docs/modules/1.1.x/dispatcher.html, is there
any
	web sites have more detail information on that?
	
	Thanks!
	Andy
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