ASA 5510 connecting to remote Nortel (that I do not have access to). I am NATing from the ASA to a different IP. IKE and IPSec both come up fine, and traffic passes over the VPN correctly. Twice a day traffic just stops passing over the VPN. I check and the tunnel is still completely up, and I verified that traffic is still being encrypted. We are not receiving decrypted packets back according to the counters in the "show crypto ips sa" command. I clear the crypto IPS sa and let the tunnel rebuild, and traffic once again starts passing over correctly. Does anyone have any ideas at all?
I have this problem too.