From the navigation pane, double-click IP.
In the IP Routing tree, click DHCP Relay.
In the DHCP Relay work area, click the DHCP Relay-VLAN tab.
To enable option 82, double-click under the VlanDhcpOption82Enabled field in the row containing the desired VLAN ID and select true.
On the toolbar, click Apply.
On the toolbar, you can click Refresh to verify the VLAN DHCP relay Option 82 configuration.