How to set up IPsec (IKEv2) VPN on a DrayTek v2960/v3900 router | Perfect Privacy
Site-to-Site IKEv2 IPSec VPN using Pre-Shared Key Authentication - simple configuration example for two Cisco routers - NIL - Network Information Library
Configuring site-to-site IPSEC VPN on ASA using IKEv2 (Config Example)