IKEv1 and IKEv2 session in ASDM monitor?

Hi all, have a question.  I have a setup of L2L tunnel between two ASA (v8.4).  I used the wizard to put these in place and selected the default values of IKEv1 and IKEv2, thinking that he would choose one or the other.  The strange thing is that, now, I see a separate session between these ASA, for IKEv1 and IKEv2.  Both pass traffic.  This is expected behavior?  Should I disable IKEv1 to force only v2, since both are v8.4?

photo attached to explain.

If both versions are configured then two IKE tunnels will be established.

I don't know if that this is expected behavior. On tune ASA the tunnel manager should try IKEv2 first and if it fails try IKEv1.

There could be some problems in which one side would launch IKEv1 while the other is IKEv2 concurrency.

It's something we can can be studied by the tunnel manager and the two Yves debugging.

debug crypto ike-common 5

debug crypto ....

I think you might want to open a TAC case, then we can this check completely.

Tags: Cisco Security

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