Looking for ktcpvs but not quite
malcolm at loadbalancer.org
Thu Jan 13 10:54:46 GMT 2005
I might be interested in sponsoring someone to develop this, as I've had
several customers ask for it (must be a lot of venture capital flooding
into VOIP :-).
Although technicaly I have no idea how it would be done...
As a work around , wouldn't a high persistence on UDP by source ip work
OK ? (allbeit with badly balanced load.)
Erik Versaevel wrote:
> I'm currently trying to create a loadbalacing SIP (voip protocol)
> cluster, however for this to work I need SIP messages from the same
> call (identifiable by the sip callid field) to get to the same
> realserver over and over again. (so, I need persistence based on the
> contents of the SIP Call-ID field). This would call for ktcpvs as we
> need to process packets at layer 7, however that poses 2 new problems,
> the first is that SIP uses clear text UDP messages, not tcp and the
> second is that there are no SIP modules for ktcpvs.
> Another option would be to mark SIP packets with iptables/netfilter
> based on the callid, however i run into the same problem, there are no
> modules to accomplish this.
> I know that there are commercial products available who are able to do
> SIP session persistence based on callid, the F5 Big-IP for example,
> the downside of that is it costs around $ 10.000 for a single
> loadbalancer (which is a SPOF so you need 2) and is a bit overkill as
> i don't need multi gigabit loadbalancing.
> Any thoughts on this?
> Kind regards,
> E. Versaevel
> LinuxVirtualServer.org mailing list - lvs-users at LinuxVirtualServer.org
> Send requests to lvs-users-request at LinuxVirtualServer.org
> or go to http://www.in-addr.de/mailman/listinfo/lvs-users
Office: +44 (0)870 443 8779
Mobile: +44 (0)7715 770523
" When a single point of failure is not an option"
Why not try our online demonstration
<http://www.loadbalancer.org/demo.html> ? Or get answers to common
questions <http://www.loadbalancer.org/fud.html> ?
More information about the lvs-users