User manual
32
router setup
MTU: Maximum Transmission Unit species 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 e-mail or to browse. (If a problem occurs, contact your ISP.)
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”
modies your WAN port’s MAC address in order to avoid detection
of the router, which can lead to a service disconnect.