MTU: Maximum Transmission Unit specifies the largest packet size permitted for network transmission. Most DSL users should use the value 1492. You can set MTU manually, but it should be left in the 576 to 1500 range. NOTE: If the value entered isn’t in accord with the value the ISP provides, it can cause problems, such as failure to send
Primary DNS: Your ISP will provide at least one Domain Name System (DNS) IP address. (DNS translates readable/recognizable domain names into numerical IP addresses.) Enter the IP address of your DNS server here.
Secondary DNS: Enter the IP address of a backup DNS server here.
MAC Address: The WAN port of the router has a unique Media Access Control (MAC) address assigned to it referred to as “Default MAC.” The “Clone MAC” option is available for special situations; for example, since an ISP allows only certain MAC addresses access to the Internet, selecting “MAC Address” and clicking “Clone MAC” modifies your WAN port’s MAC address in order to avoid detection of the router, which can lead to a service disconnect.
