[asterisk-users] Input on Dundi

[David Thomas]

On 12/12/06, Douglas Garstang <dgarstang at oneeighty.com> wrote:
> > -----Original Message-----
> > From: David Thomas [mailto:punknow at gmail.com]
> > Sent: Tuesday, December 12, 2006 11:49 AM
> > To: Asterisk Users Mailing List - Non-Commercial Discussion
> > Subject: Re: [asterisk-users] Input on Dundi
> >
> >
> > On 12/12/06, Al Bochter <Al.Bochter at bochterservices.com> wrote:
> > > Ok,
> > >
> > > I am looking for some input on using dundi.
> > > Is anyone using dundi? And how is it working out?
> >
> > We have been playing with DUNDi in a configuration similar to
> > JR's whitepaper.
> > Everything seems to be working fine but we have encountered a couple
> > hurdles. Maybe others on the list have encountered these as well.
> >
> > 1.)  When a registration server fails there doesn't seem to be an easy
> > way to have clients automatically register to a new server. (our
> > clients are mostly other asterisk boxes.) To solve this we are
> > considering using DNS failover.
> Wow. I remember when I raised this as an issue I was accused of being a Asterisk heretic. The solution suggested was to, increased load not-withstanding, bring your phone registration period right down.

Thanks for the tip Doug. Even when registration periods are set low,
the clients don't know which new server to register to. It would be
great to use SRV, however most of our clients are also Asterisk boxes,
and as you know Asterisk does not support multiple SRV lookups.

We have used DNS failover on other services in the past and have
thought to try this with asterisk. Basicly our clients would register
to FQDN like reg1.mydomain.com, then when that box fails we'd have DNS
re-direct that name to a the IP of reg2.mydomain.com.

This seems to work with web and ftp, but I'm not sure how asterisk
will respond. Any thoughts?

David