asterisk users - Sep 2007 - how to route outgoing calls on IP-level

Dear Sirs,

out asterisk server has multiple network cards.

I want some outgoing calls (from several extensions) to use one IP address,
and others to go through
another address.

is there a way to achive that using asterisk ?

Cheers,
Kate
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On Fri, 14 Sep 2007, Kate Kretz wrote:
> Dear Sirs,
>
> out asterisk server has multiple network cards.
>
> I want some outgoing calls (from several extensions) to use one IP address,
> and others to go through
> another address.
>
> is there a way to achive that using asterisk ?
I doubt it, but in any case, you really ought to do it at the Linux 
routing level.

And it might well happen that it happens automatically, anyway. In the 
absence of anything otherwise, Linux will pick the right interface for the 
network that interface is pointing to.

Unless you've got something really weird that is, in which case you need a 
networking guru and not an asterisk guru :)

Give us more details and see...

Gordon

Kate Kretz wrote:
> Dear Sirs,
>
> out asterisk server has multiple network cards.
>
> I want some outgoing calls (from several extensions) to use one IP 
> address, and others to go through
> another address.
>
> is there a way to achive that using asterisk ?
>
> Cheers,
> Kate
>
This is the job of your network, not Asterisk. Policy-based routing is 
not much fun (unless you think the Cisco CLI is "really cool") but it 
can be done.

regards,

Drew

-- 
Drew Gibson

Systems Administrator
OANDA Corporation
www.oanda.com

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What are the factors in deciding which interface the traffic needs to
go out of?

Is it based on IP address, is it based on the terminating carrier?

--Joe

On 9/14/07, Kate Kretz <kate.kretz at gmail.com>
wrote:
> Dear Sirs,
>
> out asterisk server has multiple network cards.
>
> I want some outgoing calls (from several extensions) to use one IP address,
> and others to go through
> another address.
>
> is there a way to achive that using asterisk ?
>
> Cheers,
> Kate
>
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-- 
--Joe

"Success is easy if you think of it like Rust:   It's inevitable if
you keep at it. Guys claim there are magic moments, but that's just
bullshit." --Fred Franzia (The famous wine guy)

Kate,

Are the IP interfaces on those NICs on the same subnet?

The simplest way to do this is to pin static routes to various SIP 
destinations in your kernel routing table over one interface or the
other, e.g. something like:

   route add -host w.x.y.z gw ethX

Then you can send a call to SIP peer w.x.y.z and it will go over whichever 
NIC in accordance with your preference.

I do not know of a way to control this from within Asterisk itself, and
believe it unlikely to be possible.

Good luck,

-- Alex

--
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : +1-678-954-0670
Direct : +1-678-954-0671