D-Link DSL-2770L User Manual page 26

Section 3 - Configuration
Select Static.IP if your ISP assigned you an IP address, subnet mask,
Address Mode
gateway, and DNS server address. In most cases, select Dynamic.IP.
Primary/Secondary Enter the Primary and secondary DNS server IP addresses assigned by
DNS Server:
your ISP.
MAC Address: If your ISP requires you to enter a MAC address, fill it in here. You can click
the Clone MAC button to enter your current computer's MAC address.
MTU: If you experience connection issues, you may need to change the
MTU setting for optimal performance with your specific ISP. 1500 is
the default MTU.
Enable NAT: Check this to enable the router to use NAT to assign IP addresses for
your devices.
D-Link DSL-2770L User Manual
IP over ATM(RFC 1483 Routed)
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