User Manual

S350 Series 8-Port Gigabit Ethernet Smart Switch Models GS308T and GS310TP
Configure System Information User Manual90
To configure DHCP snooping interface 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
Discover or Change the Switch IP
Address on page 12.
Your web browser might display a security message, which you can ignore. For more
information, see Access the Local Browser Interface on page 18.
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 > Interface Configuration.
6. Select one or more interfaces by taking one of the following actions:
• To configure a single interface, select the check box associated with the port, or type
the port number in the
Go To Interface field and click the Go button.
• To configure multiple interfaces with the same settings, select the check box
associated with each interface.
• To configure all interfaces with the same settings, select the check box in the heading
row
.
7. From the Trust Mode
menu, select the desired trust mode:
• Disabled. The interface is considered to be untrusted and could potentially be used to
launch a network attack. DHCP server messages are checked against the bindings
database. On untrusted ports, DHCP snooping enforces the following security rules:
- DHCP packets from a DHCP server (DHCPOFFER, DHCPACK, DHCPNAK,
DHCPRELEASEQUER
Y) are dropped.
- DHCPRELEASE and DHCPDECLINE messages are dropped if the MAC address
is in the snooping database but the binding’s interface is other than the interface
where the message was received.