User manual

C HAPTER 4 | Configuring the Switch
Configuring Security
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PARAMETERS
These parameters are displayed:
◆ Relay Mode - Enables or disables the DHCP relay function.
(Default: Disabled)
◆ Relay Server - IP address of DHCP server to be used by the switch's
DHCP relay agent.
◆ Relay Information Mode - Enables or disables the DHCP Relay Option
82 support. Note that Relay Mode must also be enabled for Relay
Information Mode to take effect. (Default: Disabled)
◆ Relay Information Policy - Sets the DHCP relay policy for DHCP
client packets that include Option 82 information.
■
Replace - Overwrites the DHCP client packet information with the
switch's relay information. (This is the default.)
■
Keep - Retains the client's DHCP information.
■
Drop - Drops the packet when it receives a DHCP message that
already contains relay information.
WEB INTERFACE
To configure DHCP Relay:
1. Click Advanced Configuration, Security, Network, DHCP, Relay.
2. Enable the DHCP relay function, specify the DHCP server’s IP address,
enable Option 82 information mode, and set the policy by which to
handle relay information found in client packets.
3. Click Save.
Figure 36: DHCP Relay Configuration