I have a number of IPSEC Lan to Lan VPNs to my Cloud provider who uses a CISCO ASA router/firewall. The VPNs using a 2820 Draytek router both work fine. However when we set up a VPN from a 2830vn router the VPN connects no problem and will allow small amounts of data but hangs when more data is sent/received. For example, if I log on to the Linux cloud server via the VPN with an SSH session and do a simple "ps" I get the correct response back, which is just a couple of lines. I can repeat this and it always works. However, if I do a "ps -ef" which generates much more data the display stops after a random number of lines (10-30) and the SSH connection hangs. The VPN does not drop and if I terminate the SSH session and re-connect the above can be repeated.

The VPN is up all the time and if I disconnect it I see it re-establish itself via SYSLOG no problem.

I have been chasing this for weeks now and my cloud supplier says there are "known issues" with CISCO to DRAYTEK routers.

Can anybody shed any light on this please?

Rgerads

Nick Brook