I have a Cisco Pix 506e connecting via a T1 line to a Cisco Device on the other end. I'm not exactly sure of the device on the other end, but it does handle multiple VPNs without the others having problems.
Currently to fix it we turn it off then on and it and it resolves the problem.
I'm looking to determine the cause. What commands are available on the PIX to try to diagnose the problem? Are there any third party tools available to help?