Configuring Device Security
Defining DHCP Snooping
ESW 500 Series Switches Administration Guide 178
5
STEP 1 Click Security > DHCP Snooping > VLAN Settings. The 
DHCP Snooping VLAN 
Settings Page 
opens:
DHCP Snooping VLAN Settings Page 
The 
DHCP Snooping VLAN Settings Page
 contains the following fields: 
• VLAN ID — Indicates the VLAN to be added to the Enabled VLAN list. 
• Enabled VLANs — Contains a list of VLANs for which DHCP Snooping is 
enabled.
STEP 2 Enter the VLAN name from the VLAN ID list and click Add. This VLAN name then 
appears in the Enabled VLANs list.
Defining Trusted Interfaces
The 
Trusted Inter faces Page 
allows network managers to define Trusted 
interfaces. The device transfers all DHCP requests to trusted interfaces.
To define trusted interfaces: