[asterisk-users] connecting 2 asterisk servers through OpenVPN

[Paul]

IAX allows trunking. With 16 channels open between 2 asterisk servers
that should recover over 400kbs compared to SIP.

I believe OpenVPN can be forced into a no-encryption test mode. If you
can do that temporarily it is easier to judge the vpn overhead.

O.Kamal wrote:

> There is no problem with the CPU utilization, it is around 40%, I will
> not be able to try this without the VPN, maybe I should try another
> VPN solution like OpenSwan, or PPTP.
>
> Why do you think that IAX will make a difference than SIP?
>
> On 1/16/07, *Gordon Henderson* <gordon+asterisk at drogon.net
> <mailto:gordon+asterisk at drogon.net>> wrote:
>
>     On Mon, 15 Jan 2007, O.Kamal wrote:
>
>     > I am trying to connect 2 asterisk servers through OpenVPN, the
>     VPN should
>     > carry 16 channel, however when active channels reached 4 concurrent
>     > channels, the connection became unstable, with a very high
>     latency (around
>     > 900ms), the internet bandwidth is 1Mbps on each server, I have
>     upgraded the
>     > bandwidth to double it, but still have exactly the same problem.
>     >
>     > Any tips or recommendations on such setup?
>
>     No real answers, but questions that might help ...
>
>     Have you tried it without using OpenVPN? Just port-forward the SIP
>     & RTP
>     ports, if you need to and give it a go.
>
>     > I am using SIP and G729 between the 2 servers, openVPN using UDP
>     with no
>     > compression.
>
>     Why not IAX?
>
>     Are your openVPN end-points up to it? Doing high-grade encryption in
>     software might challenge some slower processors - are the VPN
>     endpoints
>     the asterisk boxes themselves?
>
>     Gordon
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