I am getting an error I have never seen before on my firewall. I'm trying to establish a tunnel from my Sonicwall NSA 3500 to a Cisco ASA. It establishes Phase 1 fine but then it tries and immediately fails to connect to Phase 2. The message I get is:
Deleting IPsec SA (Phase 2) and then "Incompatible with older firmware" in the notes. Both devices are on the latest general firmware releases so I'm not sure why I would be getting this error. These devices were linked at one point in the past but that connection was removed. Now they need to be connected again. I have several other tunnels working properly on my device at this time.
Please see attached file for specific log error.