Netgear M5300-52G-POE+ (GSM7252PSv1h2) - ProSAFE 48+4 L2+ POE Stackable Managed Switch Administrator's Guide

Page of 721
Security Management 
385
 Managed Switches
A screen similar to the following displays.
b.  In the VLAN ID field, enter 1.
c.  In the Dynamic ARP Inspection field, select Enable
A screen similar to the following displays.
d.  Click Apply
A screen similar to the following displays.
Now all the ARP packets received on the ports that are member of the VLAN are copied 
to the CPU for ARP inspection. If there are trusted ports, you can configure them as 
trusted in the next step. ARP packets received on the trusted ports are not copied to the 
CPU. 
Note:
Make sure that the administrator computer has a DHCP snooping 
entry or can access the device through the trusted port for ARP. 
Otherwise, you might get disconnected from the device.