D-Link DSL-6740U User Manual page 78

Section 3 - Configuration
STATIC ROUTE
Enter the destination network address, subnet mask, gateway
AND/OR available WAN interface then click "Apply" to add the
entry to the routing table.
DEFAULT GATEWAY
Select the proper wan interface as the system default gateway
from the drop-down menu. Click "Apply" button to save it.
RIP
To configure an individual interface, select the desired RIP
version and operation, followed by placing a check in the
'Enabled' checkbox for the interface. Click the 'Save/Apply' button
to save the configuration, and to start or stop RIP based on the
Global RIP mode selected.
NOTE: RIP cannot be configured on the WAN interface which has
NAT enabled (such as PPPoE).
D-Link DSL-6740U User Manual 78