Chapter 4: Web configuration
NS3562-8P-2S-V2 Industrial Managed Switch User Manual
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The page includes the following fields:
Object
Description
Snooping Mode
Indicates the DHCP snooping mode operation. Possible modes are:
Enabled
: Enable DHCP snooping mode operation. When the DHCP
snooping mode operation is enabled, the request DHCP messages will be
forwarded to trusted ports and only allow reply packets from trusted ports.
Disabled
: Disable the DHCP snooping mode operation.
Port Mode
Configuration
Indicates the DHCP snooping port mode. Possible port modes are:
Trusted
: Configures the port as trusted sources of the DHCP message.
Untrusted
: Configures the port as untrusted sources of the DHCP message.
Buttons
• Click
Apply
to apply changes.
• Click
Reset
to undo any changes made locally and revert to previously saved
values.
Snooping table
The Dynamic DHCP Snooping Table page displays the dynamic IP assigned
information after DHCP Snooping mode is disabled. All DHCP clients that obtained the
dynamic IP address from the DHCP server will be listed in this table except for local
VLAN interface IP addresses. Entries in the Dynamic DHCP snooping Table are shown
on this page.
Buttons
• Click
Auto-refresh
to refresh the page automatically. Automatic refresh occurs
every three seconds.
• Click
>>
to use the last entry of the currently displayed table as a basis for the next
lookup. “No more entries” is shown in the table.
• Click
I<<
to start over.
IP source guard configuration
IP Source Guard is a secure feature used to restrict IP traffic on DHCP snooping
untrusted ports by filtering traffic based on the DHCP Snooping Table or manually
configured IP Source Bindings. It helps prevent IP spoofing attacks when a host tries to