remote interface failure detection mechanism

[stranger619]

hello good people

is there a feature of remote interface failure detection in FortiGate firewalls

I have a redundant group of two ports "port1 and port5" each one of them is connected to a different Layer 3 switch, currently, all the traffic is traveling through port1 if it fails port 5 will take charge.

but what if the remote interface that port1 connected to on the l3switch fails

is there any way to detect that the interface facing port1 is down and dynamically switches to port 5 to move traffic?

thank you

[Toshi_Esumi · Accepted solution]

Use link monitor:
https://community.fortinet.com/t5/FortiGate/Technical-Tip-Link-monitor/ta-p/197504

Toshi

[stranger619]

thank you so much for your help 

[fschw]

Hello @stranger619 : I have the very same issue as you and fortigate support told me a L3-Probe in redundant interface configuration is not possible. Can you please share how you configured the link-monitor for that?

thanks.