[asterisk-ha-clustering] New HA setup

[Frederic Jean]

On Tue, Nov 3, 2009 at 9:31 AM, Olle E. Johansson <oej at edvina.net> wrote:

>
> 3 nov 2009 kl. 15.19 skrev Frederic Jean:
>
> >
> >
> > Thanks Olle, I can only agree with you; it needs love to work
> > properly, lots of love : )
> And propably a major redesign to fulfill the expectations from the
> users :-)
>
> >
> > So talking about the "other" school, you put a SIP Proxy on the two
> > servers with a virtual IP
> > and get the Asterisk to talk with the same database setup we
> > described here I guess.
>
> The proxys need to handle one or two virtual IPs if you need NAT
> support. By design,
> the SIP protocol uses DNS for load balancing and failover, so it
> should not be needed,
> but most phones (as well as Asterisk) doesn't implement this fully so
> in the end you
> usually end up with heartbeat.
>
> How much of the database you need to talk with from Asterisk in this
> setup depends on
> what you do in the proxy. Some information that the proxy looks up
> regardless can be
> sent in sip headers to Asterisk.
>
> It all depends on your application. Running a SIP-PSTN gateway service
> for consumers is one thing, running a hosted PBX is completely
> different and requires a different setup.
>
>
It is actually for hosting several companies' PBXs on one platform, this
including
voicemail, etc, and video in a near future.

I then might have been off track since the beginning, but hey, that's why
mailing lists exists  ; )



> >
> > It sure is less complicated and more straight forward in terms of
> > dialplan, etc.
> Well, it does require some new thinking to get it right if you're used
> to have Asterisk matching
> peers and users.
>
> Maybe we need an AstriSIPcon for having time to discuss this work. :-)
>
> /O
> >
> >
> >
> >
> >
> > On Tue, Nov 3, 2009 at 3:44 AM, Olle E. Johansson <oej at edvina.net>
> > wrote:
> >
> > 3 nov 2009 kl. 02.35 skrev Frederic Jean:
> >
> > > Is this something "standard" in a HA Asterisk solution? Has anybody
> > > tried something similar?
> > > Any comments are appreciated!
> >
> > There are basically two different schools. The one you describe is
> > focused on Asterisk and is based on realtime/dundi. The other one
> > focuses on SIP and builds an extensible SIP network based on SIP
> > proxys that load balance SIP traffic to a set of Asterisk servers. In
> > this case, Asterisk doesn't receive registrations and doesn't "own"
> > devices. On the other hand, you can easily add other SIP applications
> > than voice. Video, presence, instant messaging...
> >
> > Asterisk is a great platform, but only for telephony and since it's
> > call stateful, it doesn't scale as easily as a SIP proxy. The
> > combination is great. This is how I built platforms for service
> > providers during many years, and this is also what we teach in the
> > Asterisk SIP Masterclasses.
> >
> > Since I need SIP scalability, I haven't focused on realtime/DUNDI. I
> > personally feel that the realtime/SIP implementation needs love to
> > work properly and that DUNDI is a bit limited to Asterisk. Nothings
> > stops other products from implementing DUNDI, but so far, no one has
> > been interested.
> >
> > Regards,
> > /Olle
> >
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> ---
> * Olle E Johansson - oej at edvina.net
> * Cell phone +46 70 593 68 51, Office +46 8 96 40 20, Sweden
>
>
>
>
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