[Serusers] About a SIP load balancing document involving SER

Jiri Kuthan jiri at iptel.org
Fri Oct 17 21:10:06 CEST 2008


Martin Hoffmann wrote:
> Iñaki Baz Castillo wrote:
>> So in conclusion we are speaking about an IP based load balancer, and not 
>> about a SIP load balancer. Also we are playing with IP level exotic technics 
>> (various hosts sharing the same IP).
>> So the above scenario would be valid for any UDP protocol, not just SIP.
> 
> The load balancer does need to be aware of SIP.

I don't thinkt that's accurate. For many load-distribution schemes
it needs to parse SIP to make the right routing decision.

>  For this to work, it
> needs to send all requests for a transaction to the same proxy. If the
> proxies are session-aware, it even needs to send all requests for a
> dialog to the same proxy.

I think there is some wording confusion here? What you are
describing is SIP awaraness. (otherwise you can't really send
the same dialog messages to the same proxy)

-jiri

> 
> But you are right, this device is not a SIP element. Which in a way is,
> why I like it ;)
> 
> Regards,
> Martin
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