system arp-table
Use this command to manually add ARP table entries to the FortiGate unit. ARP table entries consist of a interface name, an IP address, and a MAC address.
Limits for the number of ARP table entries are software limits set by the FortiGate configuration as documented in the FortiGate Maximum Values Matrix document.
config system arp-table edit {id} # Configure ARP table. set id {integer} Unique integer ID of the entry. range[0-4294967295] set interface {string} Interface name. size[15] - datasource(s): system.interface.name set ip {ipv4 address} IP address. set mac {mac address} MAC address. next end