D-Link DGS-1250 Series Reference Manual page 197

DGS-1250 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide
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:
The fields that can be configured are described below:
Parameter
From Port - To Port
Entry Limit
Rate Limit
Trusted
Click the Apply button to accept the changes made.
Figure 9-25 DHCP Snooping Port Settings Window
Description
Select the appropriate port range used for the configuration here.
Enter the entry limit value here. This value must be between 0 and 1024. Tick the
No Limit option to disable the function.
Enter the rate limit value here. This value must be between 1 and 300. Tick the
No Limit option to disable the function.
Select the trusted option here. Options to choose from are No and Yes. Ports
connected to the DHCP server or to other Switches should be configured as
trusted interfaces. The ports connected to DHCP clients should be configured as
untrusted interfaces. DHCP snooping acts as a firewall between untrusted
interfaces and DHCP servers.
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