PLANET WNRT-633 - Manual (Page 44)

User’s Manual of WNRT-633
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MTU Size The normal MTU (Maximum Transmission Unit) value for most Ethernet
networks is 1492 Bytes. It is not recommended that you change the default
MTU Size unless required by your ISP.
Attain DNS
Automatically
Select “Attain DNS Automatically”, the DNS servers will be assigned
dynamically from your ISP.
Set DNS Manually If your ISP gives you one or two DNS addresses, select Set DNS
Manually and enter the primary and secondary addresses into the correct
fields.
Clone MAC
Address
You can input a MAC address here for using clone function.
If you get Address not found error when you access a Web site, it is likely that
your DNS servers are set up improperly. You should contact your ISP to get
DNS server addresses.
WAN IP, whether obtained automatically or specified manually, should NOT be
on the same IP net segment as the LAN IP; otherwise, the router will not work
properly. In case of emergency, press the hardware "Reset" button.