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DHCP Snooping Parameters:
Items
Description
Snooping Mode
Indicates the DHCP snooping mode operation. Possible modes are:
Enabled: Enable DHCP snooping mode operation. When DHCP snooping mode operation
is enabled, the DHCP request messages will be forwarded to trusted ports and only allow
reply packets from trusted ports.
Disabled: Disable DHCP snooping mode operation.
Port Mode Configuration
Indicates the DHCP snooping port mode. Possible port modes are:
Trusted: Configures the port as trusted source of the DHCP messages.
Untrusted: Configures the port as untrusted source of the DHCP messages.
DHCP Relay
A DHCP relay agent is used to forward and to transfer DHCP messages between the clients and the server when they are not
in the same subnet domain. It stores the incoming interface IP address in the GIADDR field of the DHCP packet. The DHCP
server can use the value of GIADDR field to determine the assigned subnet. For such conditions, please make sure the switch
configuration of the VLAN interface, IP address, and PVID (Port VLAN ID) are correctly completed.
To configure DHCP Relay in the web interface:
Click Configuration / DHCP / Relay
Specify the Relay Mode, Relay server, Relay Information Mode, Relay Information Policy.
Click Apply and click the Save icon in the upper right corner to save the settings or click Reset to cancel. The
Form will return to the previously saved settings.
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