How to use CLI to check the current VPN connection status?

Zyxel_Jeff

Background and Scenario:

After establishing the site-to-site VPN and L2TP VPN connections, how can you use CLIs to check the current VPN connection status?

Answer:

You can use the commands "show sa monitor" and "show sa counter" to display the current VPN tunnel connection status and the number of VPN tunnels.