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Giraffe7
Giraffe7
New Member
March 23, 2026
Solved

Fortimanager Unable to push DHCP reservation changes

  • March 23, 2026
  • 1 reply
  • 270 views

FortiManager 7.4.9 Free Trial managing FortiGate 100F on 7.4.9 

Config status: Synchronized

 

On FortiManager I've created a new IP reservation under IP Assignment Rules, device global DB status changes to modified, yet when I use the install wizard I'm unable to push the reservation to the FortiGate 100F.

 

The install preview is empty and it doesn't recognize the reservation. Either new one or deleting an old reservation.

I have tried to modify a firewall policy along with the reservation but it only recognizes changed policy not the reservation.

 

Best answer by farhanahmed

I just tested this with FMG v7.6.6 and it worked without any issues.

-> Try first upgrading FMG to v7.4.10 and see if that works.

1 reply

farhanahmed
Staff
farhanahmed
Staff
March 25, 2026

Are you trying to set the DHCP reservation on a SSID or a VLAN interface ?

If yes, then use the AP Manger for SSID and FSW Manager for VLAN to set the DHCP reservation.

Giraffe7
Giraffe7Author
New Member
March 27, 2026

Trying to set the reservation for a VLAN interface indeed.

 

I go to FMG -> Fortiswitch manager -> Fortiswitch VLANs -> Interface -> DHCP server -> Advanced -> IP Assignment rules -> and create an reservation.

 

After the reservation is created I click on install wizard and it does not recognize the reservation.

 

Other than DHCP reservation on a VLAN interface everything else works, I can configure ports on my managed fortiswitches through Fortiswitch manager etc.

 

farhanahmed
Staff
farhanahmedAnswer
Staff
March 27, 2026

I just tested this with FMG v7.6.6 and it worked without any issues.

-> Try first upgrading FMG to v7.4.10 and see if that works.

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