TP-Link TL-R402M User Manual page 21

This page displays the WAN IP parameters assigned dynamically by your ISP, including IP
address, Subnet Mask, Default Gateway, etc. Click the Renew button to renew the IP parameters
from your ISP. Click the Release button to release the IP parameters.
MTU Size: The normal MTU (Maximum Transmission Unit) value for most Ethernet
networks is 1500 Bytes. For some ISPs you need to reduce the MTU. But this is rarely
required, and should not be done unless you are sure it is necessary for your ISP connection
If your ISP gives you one or two DNS addresses, select Use These DNS Servers and enter
the primary and secondary addresses into the correct fields. Otherwise, the DNS servers will
be assigned dynamically from ISP
Get IP with Unicast DHCP: A few ISPs' DHCP servers do not support the broadcast
applications. If you cannot get the IP address normally, you can choose this option. (You
generally need not check this option)
Note:
If you get Address not found errors when you go to a Web site, it is likely that your DNS servers
are set up improperly. You should contact your ISP to get DNS server addresses.
2. If you choose Static IP, you should have fixed IP parameters specified by your ISP. The
Static IP settings page will appear, shown in Figure 4-5:
TL-R402M
Figure 4-4 WAN - Dynamic IP
14
Cable/DSL Router User Guide