[Serusers] More on load balancing: LVS + SRVs, SER + Asterisk

[Klaus Darilion]

Arnd Vehling wrote:
> Hi,
> 
> is there anyone who is not using SER in statefull mode (i.e. using
> SER Accounting which you usually dont want to do) who did run into
> serious performance problems using a modern multiprocessor system?
> 
> IPTel states that an compaq ipaq would be able to switch the bay
> area during peak time, therefore i cant think of any scenario
> (except some MAJOR carriers maybe) where most SIP providers would run
> into critical load-balancing issues except with rtp-proxying. I am
> quite positive that one can handle massive sip-request load by using
> high-end machines with maybe several network cards.
> 
> Regarding the prepaid scenario, do u guys thinks its possible to
> use an tcl script on a cisco to extract the timeout from a
> custom sip header-line (ex. "X-Timeout: 320") inserted by a
> custom SER module?

I do not know any method to access the SIP message in a TCL script. But 
you can use Radius authentication on the Cisco box. The radius server 
responds with a certain h323-attribute which will tell the Cisco box the 
max call duration.

regards,
klaus
> 
> best regards,
> 
>   Arnd