TP-Link TL-MR6400 User Manual page 100

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. It is not recommended that you change the default MTU Size
unless required by your ISP.
Use These DNS Servers - 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 find error when you go to a Web site after entering the DNS addresses, 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. (It is
rarely required.)
2. If your ISP provides a static or fixed IP Address, Subnet Mask, Gateway and DNS setting,
select Static IP. The Static IP settings page will appear as shown in Figure 5-4.
IP Address - Enter the IP address in dotted-decimal notation provided by your ISP.

Subnet Mask - Enter the subnet Mask provided by your ISP in dotted-decimal notation.

Usually, the Sub Mask is 255.255.255.0.
TL-MR6400
Figure 5-4 WAN - Static IP
-88-
300Mbps Wireless N 4G LTE Router