IP reservation causing dhcp snooping errors

[levitan.eli]

Hello there !

I have an environment of Cisco 2960x/2960cx and Fortigate 30E/60E and having the problem as follows:

There are devices in my network that I need make for them IP reservations, like printers and time-watches that their IP is registered in servers manually, so if they change their address (in case a site goes down for a week/electricity break) we will have to troubleshoot and change the address accordingly in each server. While IP reservation in the Fortigate is a good option- after several days the 2960X/2960CX screaming at me "DHCP_SNOOPING_DENY: 1 Invalid ARPs (Res) on Gi0/1".

How can I have the best of both worlds: Keeping dhcp snooping on the ports + making a IP reservation for a device ?

Thank you !

[marce1000]

 - FYI  : https://community.cisco.com/t5/networking-documents/the-quot-sw-dai-4-dhcp-snooping-deny-quot-error-message-is/ta-p/3132652

                          https://community.cisco.com/t5/switching/invalid-arp/td-p/2835452

 M.