TP-Link T1600G-18TS Configuration Manual page 455

Configuring ARP ARP Configurations
show ip arp { gigabitEthernet port | port-channel lagid | vlan id }
Verify the active ARP entries associated with a Layer 3 interface.
Specify the number of the routed port.
port:
Specify the ID of the LAG.
lagid:
Specify the VLAN interface ID.
id:
Configuration Guide 432