| Description |
This article describes how DHCP option 121 adds a static route in the table and how to remove it.
In this scenario, no static routes were configured, yet there are still routes present in the table.
Static route:
Routing table:
|
| Scope | FortiGate. |
| Solution |
This is due to DHCP being enabled on port3.
The port3's gateway sends static routes through DHCP option 121. Refer to this link for instructions on how to push static routes from FortiGate when it is acting as a DHCP server.
By default, it has an Administrative distance (AD) value of 5, which is preferred over a manually configured static route with an AD value of 10. Note that lower AD values are preferred.
To remove these routes from the table, either disable 'Retrieve default gateway from server' or increase the AD to any value higher than 10 and select 'Renew'. |
