A. It ensures consistent settings between phase1 and phase2.
B. It guides the administrator to use Fortinet recommended settings.
C. It automatically install IPsec tunnels to every spoke when they are added to the FortiManager ADO
D. The VPN monitor tool provides additional statistics for tunnels defined with an IPsec recommended template.
Explanation:
The use of an IPsec recommended template offers the advantage of ensuring consistent settings between phase1 and phase2 (A), which is essential for the stability and security of the IPsec tunnel. Additionally, it guides the administrator to use Fortinet's recommended settings (B), which are designed to optimize performance and security based on Fortinet's best practices.
Reference: The benefits of using IPsec recommended templates are outlined in Fortinet's SD-WAN documentation, which emphasizes the importance of consistency and adherence to recommended configurations.