Configuring Link Status propagation
The Propegate Link Status to Ports section of the Link Status screen shows any interfaces whose status is linked to this interface.
Linking the state of an internal link to the external link prevents an accumulation of undeliverable mail from building up on the FortiMail unit when the internal link goes down.
To configure Link Status propagation
1. Go to System > Network > Link Monitor.
2. Enter the number of seconds between checks of the Link Status. If this is set to zero, the Link Status will not propagate to the other ports.
3. Enter the number of seconds to delay after a link state operation before checking the status.
4. Under Link Status, select the interface you want to propagate the status from, then click Edit for the interface.
5. In the Link Status Settings popup window, specify the ports you want to propagate the status to by moving the ports from the left box to the right box.
6. Click OK to confirm your selections and return to the Link Status screen.