TP-Link TL-MR3020 User Manual page 252

 Setting IP address manually
1 Select Use the following IP address radio button, and the following items are available. If
the Router's LAN IP address
IP address field and 255.255.255.0 into the Subnet mask field.
2 Type the Router's LAN IP address (the default IP is 192.168.0.254) into the Default
gateway field.
3 Select Use the following DNS server addresses radio button. In the Preferred DNS
Server field you can type th
TL-MR3020
Figure B-0-3
is 192.168.0.254, type 192.168.0.x (x is from 1 to 253) into the
e DNS server IP address, which has been provided by your ISP
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Portable 3G/4G Wireless N Router