User Manual

16-Port Gigabit (Hi-Power) PoE+ Ethernet Smart Managed Pro Switch with 2 SFP Ports
Configure System Information User Manual121
If you did not yet activate your warranty, the Register to activate your warranty page
displays. For more information, see
Register the switch on page 28.
4. Enter one of the following passwords:
• After registration, enter the device admin password.
• If you previously managed the switch through the Insight app or Cloud portal, enter
the Insight network password for the last Insight network locat
ion.
For information about the credentials, see
Credentials for the device UI on page 26.
5. Click the Go
button.
The System Information page displays.
6. Select System> Services >
DHCP Snooping > Interface Configuration.
7. Select whether to display physical interfaces, LAGs, or both by clicking one of the following
links above the table heading:
•1 (the
unit ID of the switch). Only physical interfaces are displayed. This is the default
setting.
• LAG
. Only LAGs are displayed.
• All. Both physical interfaces and LAGs are displayed.
8. 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 T
o 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
.
9. 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,
DHCPRELEASEQUERY) 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.