[asterisk-users] connecting 2 asterisk servers through OpenVPN

Gordon Henderson gordon+asterisk at drogon.net
Mon Jan 15 15:36:37 MST 2007


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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