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4-4 DHCP Relay
4-4.1 Configuration
Parameter
Description
The section describes how to forward the DHCP requests to another specific DHCP
servers via DHCP relay. The DHCP servers may be on another network.
This section describes how to configure DHCP relay setting including:
Relay Mode (Enabled and Disabled)
Relay Server IP setting
Relay Information Mode (Enabled and Disabled)
Relay Information Mode Policy (Replace, Keep and Drop)
Web Interface
To configure a DHCP Relay in the web interface:
1.
Select “Enabled” in the relay mode of DHCP relay configuration.
2.
Specify “Relay Server IP” address.
3.
Select “Enabled” in the relay information mode of dhcp relay configuration.
4.
Specify “Relay” (Replace, Keep and Drop) in the relay information mode of
DHCP relay configuration.
5.
Click “Apply”.
Figure 4-4.1: The DHCP Relay Statistics
Relay Mode:
Indicates the DHCP relay mode operation. Possible modes are:
Enabled:
Enables DHCP relay mode operation. When DHCP relay mode
operation is enabled, the agent forwards and transfers the DHCP messages
between the clients and the server when they are not in the same subnet
domain. The DHCP broadcast message won't be flooded for security
considerations.
Disabled:
Disables the DHCP relay mode operation.
Relay Server:
Indicates the DHCP relay server IP address. A DHCP relay agent is used
to forward and transfer the DHCP messages between the clients and the server
when they are not in the same subnet domain.
Relay Information Mode:
Indicates the DHCP relay information mode option
operation. Possible modes are:
Enabled:
Enables the DHCP relay information mode operation. When the
DHCP relay information mode operation is enabled, the agent inserts
specific information (option 82) into a DHCP message when forwarding to
DHCP server and removing it from a DHCP message when transferring to