Link Health Monitor
Adding a link health monitor is required for routing fail over traffic. A link health monitor will confirm the connectivity of the device’s interface
To add a link health monitor - web-based manager
1. Go to Router > Static > Settings and select Create New.
For low-end FortiGate units, go to System > Network > Routing and select Create New.
2. Choose a name.
3. Select the Interface that will send probe requests which is the modem.
4. Specify the Gateway IP address if required, if not keep it set to 0.0.0.0.
5. Make sure that Health Check is enabled.
6. Set the Probe Type to Ping or HTTP.
7. For the Server field, enter the IP address of a server that the FortiGate unit will send ping or http requests to.
8. For the Ping Interval, enter the number of seconds to send ping requests.
9. For the Failover Threshold, enter the number of lost pings or http requests is acceptable before the port is determined to be down.
10. Make sure to enable Update Routing Table when Gateway Detection Status Changes.
11. Enable Bring Down (Up) and select the redundant interface.
12. Select OK.
To add a link health monitor - CLI
config system link-monitor
edit “Example1”
set srcint <Interface_sending_probe>
set server <ISP_IP_address>
set protocol <Ping or http>
set gateway-ip <the_gateway_IP_to_reach_the_server_if_required>
set failtime <failure_count>
set interval <seconds>
set update-cascade-interface enable
set update-static-route enable
set status enable
end
See Also