Hi, I have a LAN 2 LAN VPN using L2TP (3DES-SHA1 Auth) running between Site 1 and Site 2, and also the same running from Site 2 to Site 3. But when I try to establish another L2TP (3DES-SHA1 Auth) on Site 1 to Site 3 it connects and disconnects straight away.

This morning when I checked Site 1 to Site 3 was established but Site 1 to Site 2 had dropped, and also would not reconnect. Can the Draytek 2820 only establish 1 L2TP LAN 2 LAN at anyone time? Site 1 is Dialling Out to Site 2 and Site 3.

Site 1: 192.168.1.0
Site 2: 192.168.10.0
Site 3: 192.168.20.0

Thanks.

If that was me and you are using Draytek at both ends then create IPsec VPNS and in the Networks add the extra subnet to the VPNS.

Thanks sicon, I created another connection for one of the links that dropped to IPSec Tunnel, and it appears to be staying up! Is this a know issue for VPN's with the same settings to not work, or could be a Draytek thing?

Thanks again.

I don't know if its a know issue but generally with the setup you are using an IPSEC would be used