Hi @bluesea2010,
I would advise different approach. First of all, undo these commands. If you enable monitor debugging, you'll kill your session, and won't be able to see anything there.
Instead, you should do plain 'debug crypto ikev2 protocol' (by default it does at level 1, but you can append higher level up to 255). You could add 'debug crypto ikev2 platform' too. These debugs are relevant only for IKEv2, so you won't see any junk around it.
Also, you could further restrict this debug by using 'debug crypto condition peer X.X.X.X' option, and then filter based on IP of remote host (there are other variants of the same command.
Once done, do not forget to disable debugging by using 'undebug all' (which will remove your filter too, so don't forget to re-add it, in case you are repeating this process).
BR,
Milos
