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use this commands to list, troubleshot and edit arp related problems/settings on a Fortigate unit.

To list your existing ARP table entries on a Fortigate unit.

get system arp-table

Use this command to add ARP table entries to the Fortigate unit.

config system arp-table
	edit %value%
	set interface %int%
	set ip 192.168.0.100
	set mac 00:00:00:00:00:00
end

%value% – create or edit entry number.
%int% – Interface name (wan1, wan2,internal,dmz).

Use this command to delete ARP table entries to the Fortigate unit.

config system arp-table
	delete %value%
end

%value% – is the entry number you want to delete.

Use this command to clear ARP cache entries on a Fortigate unit.

execute clear system arp table