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DGS-3130 Series Layer 3 Stackable Managed Switch Web UI Reference Guide
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saving them to the IMPB white list. If an unauthorized user tries to access an IP-MAC binding enabled port, the
system will block the access by dropping its packet. Active and inactive entries use the same database. The function
is port-based, meaning a user can enable or disable the function on the individual port.
IPv4
DHCPv4 Snooping
DHCP Snooping Global Settings
This window is used to display and configure the global DHCP snooping settings.
To view the following window, click Security > IMPB > IPv4 > DHCPv4 Snooping > DHCP Snooping Global
Settings, as shown below:
Figure 9-39 DHCP Snooping Global Settings Window
The fields that can be configured are described below:
Parameter Description
DHCP Snooping Select to enable or disable the global DHCP snooping status.
Information Option Allow
Untrusted
Select to enable or disable the option to globally allow DHCP packets with the
relay Option 82 on the untrusted interface.
Source MAC Verification Select to enable or disable the verification that the source MAC address in a
DHCP packet matches the client hardware address.
Station Move Deny
Select to enable or disable the DHCP snooping station move state. When
DHCP snooping station move is enabled, the dynamic DHCP snooping binding
entry with the same VLAN ID and MAC address on the specific port can move
to another port if it detects that a new DHCP process belong to the same VLAN
ID and MAC address.
Click the Apply button to accept the changes made.
DHCP Snooping Port Settings
This window is used to display and configure the DHCP snooping port settings.
To view the following window, click Security > IMPB > IPv4 > DHCPv4 Snooping > DHCP Snooping Port Settings,
as shown below:
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