a.Enable DHCP snooping
∙Click on the Enable radio button next to DHCP Snooping.
# Configure DHCP snooping functions on GigabitEthernet 1/0/1.
∙Click the 
icon of GigabitEthernet 1/0/1 on the interface list. Perform the following operations on the DHCP Snooping Interface Configuration page shown in b.
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