We have been running about 20 L2L VPN tunnels on our PIX for over a year. They have never had any problems establishing tunnels when a ping (or any interesting traffic) is sent from either end. Recently, without any changes to our config, we are not unable to establish the tunnels with traffic from the remote sides or client VPNs. We can still establish the tunnels with traffic from our side. I have tried connecting with the Cisco VPN client to the client VPN that used to work and it no longer conencts. Any thoughts? This is in a high uptime environment so I can't just reboot it or run any commands that would kill connections.
I have this problem too.