<selfpromotion level="innocent"> Our SIPmethod sip servlet platform includes support for HA and call replication. Writing a quick proxy or b2b UA application on it might be an option: http://www.micromethod.com/products/sipmethod.htm We have a free developer version up for download if you want to give it a try. </selfpromotion> --- RJ Auburn CTO, Voxeo Corporation tel:+1-407-418-1800 On Nov 6, 2009, at 6:32 PM, Brian Sneddon wrote:
None of those will preserve state, however, which I believe was the main issue being presented by the original poster. I use Linux-HA quite a bit and it's great for service availability, but doesn't really help if you're trying to perform a stateful failover.
Brian
----- "randal k" <rkohutek at gmail.com> wrote:
Or you could use Linux-HA, or you could use super-low TTLs and do some monitoring+DNS magic, could do multi-layer proxies as well ... there are lots of ways to ensure uptime on open source software, especially with Linux.
Randal
On Fri, Nov 6, 2009 at 3:25 PM, Brian Sneddon <bsneddon at gc1.com> wrote:
I'll chime in with at least one potential option. If the free SIP proxies/load balancers all fell off the table solely because of lack of stateful HA, then perhaps running your proxy/proxies on VMware vSphere and taking advantage of their Fault-Tolerance feature is an option. I haven't used it personally quite yet, however it's supposed to provide stateful failover for the entire system.
Brian
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