Netgear M4300-24X24F (XSM4348S) - Stackable Managed Switch with 48x10G including 24x10GBASE-T and 24xSFP+ Layer 3 Guia Do Administrador

The example is shown as CLI commands and as a web interface procedure.

Enable DHCP snooping globally.

Enable DHCP snooping in a VLAN.

Configure the port through which the DHCP server is reached as trusted. 

View the DHCP Snooping Binding table. 

If the entry does not exist in the DHCP Snooping Binding table, you can add the entry 
manually through the ip verify binding mac-address vlan vlan-id 
ip-address

 interface interface-id command in global configuration mode.

Enable IP Source Guard in interface 1/0/2. 

With this configuration, the device verifies both the source IP address and the source MAC 
address. If the port-security option is skipped, the device verifies only the source IP address.

(Netgear Switch) (Config)# ip dhcp snooping

(Netgear Switch) (Config)# ip dhcp snooping vlan 1

(Netgear Switch) (Config)# interface 1/0/1

(Netgear Switch) (Interface 1/0/1)# ip dhcp snooping trust

(Netgear Switch) #show ip dhcp snooping binding

      

Total number of bindings:  1

MAC Address        IP Address      VLAN  Interface    Type     Lease (Secs)

-----------------  --------------  ----  -----------  -------  -----------

00:16:76:A7:88:CC  192.168.10.86   1     1/0/2        DYNAMIC  86400

(Netgear Switch) (Interface 1/0/2)#ip verify source port-security