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Configure System Information
79
ProSAFE 10-Gigabit Smart Managed Switch XS728T and XS748T User Manual
Configure DHCP Snooping
DHCP snooping is a useful feature that provides security by filtering untrusted DHCP
messages and by building and maintaining a DHCP snooping binding table. An untrusted
message is a message that is received from outside the network or firewall and that can
cause traffic attacks within your network. The DHCP snooping binding table contains the
MAC address, IP address, lease time, binding type, VLAN number, and interface information
that corresponds to the local untrusted interfaces of a switch. An untrusted interface is an
interface that is configured to receive messages from outside the network or firewall. A
trusted interface is an interface that is configured to receive only messages from within the
network.
DHCP snooping acts like a firewall between untrusted hosts and DHCP servers. It also
provides way to differentiate between untrusted interfaces connected to the end user and
trusted interfaces connected to the DHCP server or another switch.
From the System > Services menu, you can access pages that are described in the
following sections:
• Configure the Global DHCP Snooping Settings on page 79
• Enable DHCP for All Interfaces in a VLAN on page 80
• Configure DHCP Snooping Interface Settings on page 81
• Configure Static DHCP Bindings on page 83
• Configure the DHCP Snooping Persistent Settings on page 84
Configure the Global DHCP Snooping Settings
Use this page to view and configure the global settings for DHCP snooping.
To configure the global DHCP snooping settings:
1. Connect your computer to the same network as the switch.
You can use a WiFi or wired connection to connect your computer to the network, or
connect directly to a switch that is off-network using an Ethernet cable.
2. Launch a web browser.
3. In the address field of your web browser, enter the IP address of the switch.
If you do not know the IP address of the switch, see Change the Default IP Address of the
Switch on page 10.
The login window opens.
4. Enter the switch’s password in the Password field.
The default password is password.
The System Information page displays.
5. Select System> Services > DHCP Snooping > Global Configuration.
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