A customer with a semi-rural office wanted an internet connection with multiple levels of fail over, but to keep the static IPv4 and IPv6 blocks routed over multiple connections for resilience. Being a rural location only (slow) ADSL is available natively, so alternatives were needed.
A Fibre Ethernet service is the ideal solution for a fast and reliable internet connection, but the customer wanted extra levels of resilience in case of a fault - a JCB cutting the fibre etc.
The office was installed with the following physical internet connections:
Naturally a FireBrick FB2900 was installed and configured to give the following levels of fail over.
With levels 1 through to 3, the static IPv4 and IPv6 addresses are re-routed accordingly, so the IPs in use do not change when the Ethernet fails-over to the L2TP or bonded ADSL.
Fail over and re-routing happens in about 20 seconds.
This means that VPN points, and various servers/IoT/cctv devices are available over the same IP addresses in the event of the fibre ethernet service failing.
Status screen of the FireBrick showing the port status. (ADSL 2 being unplugged during some testing)