D-Link DES-3326 Configuration Manual page 4

Fig 5. Switch Operating Mode
Using the space bar change the operating mode from layer 2 to 'IP Routing,
support IEEE 802.1Q VLANs' as in fig 5. Apply the changes, the switch will
reboot. Reattach to the switch through HyperTerminal. Please note, you do
not need to change any of the configuration parameters in the 'Remote
management setup' leave them at there default settings, fig 6.
Fig 6. Remote Management Settings
After you have completed the above. Proceed to the next stage of the
configuration, that is to configure the VLAN's.