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2) Configuring the VPN client in MacOS X as of version 10.11 El Capitan:
2.1) In the Network configuration dialog window, click on the + button (marked red in the figure below) and select the option VPN type IKEv2.
2.2 Enter the following in the fields server address and local and remote identity (see step 1.7).
2.3) Click the Authentication settings... button.
2.4) Select the option None and enter into the field Key ("shared secret") the character combination that you specified in step 1.7 of the LANCOM configuration.
2.5) Click on the OK button to accept your settings.
2.6) Click on the Connect button to establish the VPN connection.
2.7) The VPN client has now been successfully configured.