[reSIProcate] DUM SRV failover behavior

[Jason Fischl]

Under what circumstances are you trying to failover? If you are using
udp and the first server is not responding at all, the timeout will
take 32 seconds to occur so you will never fail over.

If you use a connection-oriented protocol, you will get an ICMP error
when you try to connect and it will immediately failover. It would
failover with UDP if the server sent an explicit error.

We've considered changing this behavior so that UDP would failover
sooner but this would imply not waiting the full 64*T1 for a timeout.
Note that the DNS caching and blacklisting will ensure that the failed
server is not retried on a subsequent transaction.

Jason




On 8/7/06, Shaun Dawson <scdawson at gmail.com> wrote:
> All,
>
>  I've been having trouble getting the DUM to fail over to a secondary SIP
> proxy using SRV records.  Before I get too crazy trying to to poke further
> into the problem, does anyone know that this expressedly does or does not
> work?
>
>  thanks,
>    Shaun
>
> _______________________________________________
> resiprocate-devel mailing list
> resiprocate-devel at list.sipfoundry.org
> https://list.sipfoundry.org/mailman/listinfo/resiprocate-devel
>
>