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Netgear M4300-52G-PoE+ (GSM4352PB) - 48x1G PoE+ Stackable Managed Switch with 2x10GBASE-T and 2xSFP+ (1,000W PSU) Administrator's Guide

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Security Management 
334
Managed Switches 
Web Interface: Configure Dynamic ARP Inspection
1. 
Enable DHCP snooping globally.
a. Select Security > Control > DHCP Snooping Global Configuration. 
A screen similar to the following displays.
b.  For DHCP Snooping Mode, select the Enable radio button.
c.  Click Apply. 
2. 
Enable DHCP snooping in a VLAN. 
a. Select Security > Control > DHCP Snooping Global Configuration. 
A screen similar to the following displays.
b.  In the VLAN ID field, enter 1. 
c.  In the DHCP Snooping Mode field, select Enable. 
A screen similar to the following displays.