get : system arp
 
system arp
View the ARP table entries on the FortiGate unit.
This command is not available in multiple VDOM mode.
Syntax
get system arp
Example output
# get system arp
Address Age(min) Hardware Addr Interface
172.20.120.16 0 00:0d:87:5c:ab:65 internal
172.20.120.138 0 00:08:9b:09:bb:01 internal