Dual internet connections with a single ddns-domain

[josepcardona]

Hi,

I wonder if in a "link redundancy and no load sharing scenario" is it possible to update a single ddns-domain with WAN2 public IP address when WAN1 internet connection is not available.

https://docs.fortinet.com/document/fortigate/7.0.9/administration-guide/360563/dual-internet-connect...

How can I force to automatically update ddns-domain with WAN2 IP after link health monitor marks WAN1 DOWN ?

[abarushka]

Hello,

It is possible, but not recommended. Please find more details by following the link below:

https://community.fortinet.com/t5/FortiGate/Technical-Tip-FortiDDNS-priority-of-monitor-interfaces/t...

[josepcardona]

Thank you abarushka, does this solution actually work? Is the inconvenience just a delay problem on the IP update, I don't understand why I have to call Fortinet Technical Assistance to update de dns-domain IP. What If I use dyndns.org instead of fortiguarddns?

Thank you.

[abarushka]

Hello,

KB is referring to FortiDDNS. However in case of dyndns.org, I would also expect delay due to DNS caching.