D-Link DGS-1510 Series Web Ui Reference Manual page 62

DGS-1510 Series Gigabit Ethernet SmartPro Switch Web UI Reference Guide
The fields that can be configured are described below:
Parameter
Information Trust All
Information Check
Information Policy
Information Option
Click the Apply button to accept the changes made.
Click the Edit button to modify the corresponding interface.
Enter a page number and click the Go button to navigate to a specific page when multiple pages exist.
DHCP Relay Information Option Format Settings
This window is used to configure and display the DHCP information format.
To view the following window, click Management > DHCP > DHCP Relay > DHCP Relay Information
Option Format Settings, as shown below:
Figure 4-32 DHCP Relay Information Settings window
Description
Select this option to enable or disable the DHCP relay agent to trust
the IP DHCP relay information for all interfaces.
Select this option to enable or disable the DHCP relay agent to
validate and remove the relay agent information option in the received
DHCP reply packet.
Select the Option 82 re-forwarding policy for the DHCP relay agent.
Options to choose from are Keep, Drop, and Replace.
Keep - Select to discard the packet that already has the relay option.
Drop - Select that the DHCP request packet that already has the relay
option is left unchanged and directly relayed to the DHCP server.
Replace - Select that the DHCP request packet that already has the
relay option will be replaced by a new option.
Select this option to enable or disable the insertion of relay agent
information (Option 82) during the relay of DHCP request packets.
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