I work in Geneva, and we have some issues with the VPN ipsec between fortigates. The VPN is working fine, and some times, they stop working eventhough they are still up. We found that this happens a lot with swisscom lines.
The VPN is up, the route are ok, but nothing goes through the VPN. No traffic arrives at destination. We reboot the ISP router and it work again, or we shut the VPN and turn it back on (by changing the remote ip on the ipsec, and putting back the good one) and then it work again.
Are you aware of this kind of problem ? Does it come from the ISP ? Is there anyway to avoid that ?
Hi seiji9, Please let us know if the issue you encounter is frequent and if it happens at any specific time of a day. Also please let us know the fortigate device model and firmware you are using on fortigate ?
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