Hello everyone,
I have a problem with two IPIP tunnels with IPsec in a Mikrotik. We have two sites, both with a second internet connection, so there is a backup connection when the main goes down. There is an IPIP tunnel between the main connections of both sites and a IPIP tunnel between the backup connections.
Site A Main IP <– IPIP –> Site B Main IP
Site A Backup IP <– IPIP –> Site B Backup IP
Site A is an Mikrotik RB4011, Site B is an Mikrotik RB3011. In both routers there is een static route, so the second tunnel goes over the backup connection.
Normaly the IPIP tunnels works correctly, but when there was a outage of the PPPoE and the connection is back again, the IPIP tunnel stays down. I tried the following:
- Clearing connection tracking
- Flush IPsec SA
- Disable / enable IPIP
Only a reboot of the Mikrotik router works. Then the tunnel is up directly. Also when I disable IPSec encryption, the tunnel goes up.
Does anyone recognise this problem? Thanks in advance!
Regards,
KoffieKopje