VPN flapping

[dirkdigs]

hello i have Fortigate to Fortigate vpn setup i used the vpn wizard.

im getting reports the vpn tunnel is up and down constantly. 

is there auto keep-alive? where do i find this setting 

im on f/w 6.0.x and i don't see it within the gui ?

[ede_pfau]

this usually is not a matter of auto-connect. Get a permanent ping going and watch the line quality. When the line flaps, the VPN will flap as well. Some packet loss will suffice.