Vpn ikev2 re-establishing if the option fall back to primary is selected

Hoygen83

Hello,
I have a usg flex 700 behind a nat, establishing vpn with another site.
I can see that if the option in the gateway settings "fall back to primay peer" is selected, and it is set to 3600 seconds, every hour the vpn has a disconnection.
That happens even if the vpn is connected to the primary peer ip.
So I am wondering, is there a specific log that can help me discover if there is something in the middle disturbing it?
Regards

mMontana

WAN connections are verifing the connection status? On remote (calling) and local (waiting) side.

Zyxel_Jeff

Hi @Hoygen83

Can you share the screenshot of the 3600 seconds parameter configuration with us?

BTW, while the VPN disconnects you can navigate the Web-GUI path: Monitor->Log -> View Log to see if there is any VPN disconnection related log.  If so, you can share the log with us, too. Maybe we can analyze that for you, thanks.

Zyxel_Jeff

Hi @Hoygen83

One more question, if the VPN is disconnected, does the traffic still can be passed via the VPN tunnel?  Or not? Thanks.

Hoygen83

when it is disconnected it will not pass.

Zyxel_Jeff

Hoygen83 

Thanks for your update. Can you share your VPN-related settings screenshots with us?  BTW, while the VPN disconnects are there any suspect logs relates to disconnection on the Monitor log?