TP-Link TL-WR642G User Manual page 23

IP. If you are given a fixed IP (static IP), please select Static IP. If you are given a user name and
a password, please select the type of your ISP provided (PPPoE/BigPond/L2TP/PPTP). If you
are not sure which connection type you use currently, please contact your ISP to obtain the
correct information.
1. If you choose Dynamic IP, the router will automatically get IP parameters from your ISP.
You can see the page as follows (Figure 4-4):
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 your ISP.
Note:
If you get address and find error 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.
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. (This is
TL-WR642G 108M Wireless Router User Guide
Figure 4-4 WAN – Dynamic IP
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