I have used below components to configure IPSec VPN between CSR and Fortigate. IKEv2 ProposalIKEv2 PolicyKEv2 ProfileIKEv2 KeyringCrypto Map crypto ikev2 keyring KR-1peer SITE-2address <x.x.x.x>pre-shared-key <xxxx>crypto ikev2 proposal 1encryption ...