The message you're not seeing shouldn't be an issue, probably just a difference between versions.
We can't see what the problem is from this output, things seem to be going along well and then it just stops. Looks like the traffic isn't getting through to the peer, or the peer isn't responding for some reason. Can you get the similar debug from the other side?
Along these lines, is the far end device behind a firewall or NAT/PAT device? If so and it doesn't support IPSec pass-thru that could break things. Even if it does, sometime when opening firewall policies to support IPSec people will allow TCP and/or UDP port 50 instead of IP protocol 50, so that's another thing to check.
Thanks for the answer/comments. Unfortunately the "far" end never told me what they did to solve the problem. But it would have been nice if it from the debug output was possible to get some kind of clue what was wrong.
On the VPN3015 http GUI "Concentrator Series Manager" click/goto "System" then "Event" and then "Classes" here you define/add the events you would like to see in the log, on the console, to a Syslog server, an e-mail, or even a trap.
The quick and easy way is to send it to the log, and the view it by clicking on the "Monitoring" and the either "Filterable Event Log" or "Live Event Log".
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