[Serusers] About a SIP load balancing document involving SER

Martin Hoffmann hn at nvnc.de
Fri Oct 17 23:12:23 CEST 2008


Jiri Kuthan wrote:
> 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)

Sure. You might want to right my above statement again. It says "does
need", not "does not". ;)

Best regards,
Martin



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