VPN: IKEv1 And IKEv2

While configuring some VPNs today, the question came up about using IKEv1 vs IKEv2. I don't want to get into the technical details about the differences in the two (I'll do that in the next post), but I do want you to know that the two are not compatible with each other. So if you use IKEv2 on one side, you have to use it in the other side.