Dhcp Local Relay Settings - D-Link xStack DGS-3120 Series Reference Manual

xStack® DGS-3120 Series Layer 3 Managed Gigabit Ethernet Switch Web UI Reference Guide
Click the Apply button to accept the changes made.
DHCPv6 Relay Option 18 Settings
This window is used to configure the DHCPv6 relay agent information for processing Option 18 within the Switch.
To view this window, click Network Application > DHCP > DHCPv6 Relay > DHCPv6 Relay Option 37 Settings
as shown below:
The fields that can be configured are described below:
Parameter
State
Check
Interface ID
Click the Apply button to accept the changes made.

DHCP Local Relay Settings

The DHCP local relay settings allows the user to add Option 82 into DHCP request packets when the DHCP client
gets an IP address from the same VLAN. If the DHCP local relay settings are not configured, the Switch will flood
the packets to the VLAN. In order to add Option 82 into the DHCP request packets, the DHCP local relay settings
and the state of the Global VLAN need to be enabled.
To view this window, click Network Application > DHCP > DHCP Local Relay Settings as shown below:
The fields that can be configured are described below:
Parameter
DHCP Local Relay
State
VLAN Name
Figure 9-22 DHCPv6 Relay Option 18 Settings window
Description
When enabled, the DHCP packet will be inserted with the Option 18 field before being
relayed to the server. When the state is disabled, the DHCP packet will be relayed
directly to server without further checks and inserted with the Option 18.
When enabled, packets coming from the client side should not have the Option 18 field.
If the client originating packets have the Option 18 field set they will be dropped.
Specifies the content in the interface ID.
Default - The interface ID will include the VLAN ID, Module, Port, and System MAC
address of the device.
CID - The interface ID will include the VLAN ID, Module, Port, and user defined string.
Vendor1 - The interface ID will be System MAC address of the device.
Figure 9-23 DHCP Local Relay Settings window
Description
Click to enable or disable the DHCP local relay global state. The default is Disabled.
Enter the VLAN name to apply to the DHCP local relay operation.
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