[Serusers] Few questions

E. Versaevel erik at infopact.nl
Fri Dec 24 09:03:29 CET 2004


First off all, Merry X-mas ‘n stuff to you all ;)

I’m using SER for a while now and I’m trying to get some answers to these
questions:
	1) 	Is there an indication on how many calls/s a reasonably
simple server like a p IV 3.2 GHz / 1 gbyte ram can 		handle as a
statefull proxy?

	2) 	Would it be possible to use a stripped down ser to load
balance a cluster of ser’s ?
			a. I want to build a scaleable, high available
solution for minimal costs (as always :P)
			b. Reply’s need to come from the IP of the load
balancer because of NAT traversal

			The internet -------→ Stripped ser --------------
SER Cluster
				   			    |
							    |
						Stripped Ser (standby)

	3)	Is it necessary for SIP messages within one call to end up
on the same server within the cluster?
			IE if the loadbalancer sends the INVITE to
ser_cluster_machine_1, which sends an PROXY AUTH Required,
but the clients response ends up on ser_cluster_machine_2 what would happen?

			What would happen if the ser_cluster_machine_1 keeps
waiting for an ACK for example? I think as a
statefull proxy it would keep spitting out it's request until the reply ends
up there by chance thru 			the loadbalancer

Kind regards and best wishes,

E. Versaevel





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