asterisk users - Dec 2019 - 3 locations 3 vpns

Hello,

I have the following setup:

Network A <==> Network B <==> Network C
   |                                                                     
|
   \----------------------------------------/

All 3 locations are connected with a layer2 vpn to make it transparent 
with the same ip range 10.0.0.x/24.

Network A and C is close to each other and have another direct routed 
tunnel 192.168.1.x/24.

I would like to route the calls between A and C on this direct tunnel.
What is the best way of accomplishing it?

The phones are older OpenStage models and only support 1 SIP server, 
that would have been my first idea just to setup a secondary Asterisk on 
location A or C and have the phones register on both sip servers.

My other idea would be to setup a secondary Asterisk on location A or C 
and link the two with IAX. However B is strategically more important 
than A or C since it has the dialout setup to PSTN. Let's say the second 
asterisk is setup at C and that loses connectivity with B (while A still 
have it's tunnel up), that will result both A and C are separated from B 
also in this case all of A's phone traffic is routed through C.

Any ideas are welcome.

Hi,
I would use some dynamic routing protocol. For this purpose would be better
don't mix L2 and L3. Then you can use OSPF or RSTP.


S pozdravem
Tomáš Holý

> 6. 12. 2019 v 18:47, "freebsd at tango.lu" <freebsd at
tango.lu>:
> 
> Hello,
> 
> I have the following setup:
> 
> Network A <==> Network B <==> Network C
>  |                                                                     |
>  \----------------------------------------/
> 
> All 3 locations are connected with a layer2 vpn to make it transparent with
the same ip range 10.0.0.x/24.
> 
> Network A and C is close to each other and have another direct routed
tunnel 192.168.1.x/24.
> 
> I would like to route the calls between A and C on this direct tunnel.
> What is the best way of accomplishing it?
> 
> The phones are older OpenStage models and only support 1 SIP server, that
would have been my first idea just to setup a secondary Asterisk on location A
or C and have the phones register on both sip servers.
> 
> My other idea would be to setup a secondary Asterisk on location A or C and
link the two with IAX. However B is strategically more important than A or C
since it has the dialout setup to PSTN. Let's say the second asterisk is
setup at C and that loses connectivity with B (while A still have it's
tunnel up), that will result both A and C are separated from B also in this case
all of A's phone traffic is routed through C.
> 
> Any ideas are welcome.
> 
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