TP-Link TL-WR641G - Manual (Page 22)

TL-WR641G 108M Wireless Router User Guide
Figure 5-4 WAN - Dynamic IP
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.
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.
Get IP with Unicast DHCP: A few ISPs' DHCP servers do not support the
broadcast applications. If you can not get the IP Address normally, you can choose
this option. (You generally need not check this option).
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 5-5:
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