La murra y demás...: Connect 2 routers de forma inalámbrica (Bridge ) usando el TL-MR3020

Explains how to bridge network using two wireless routers, the first (Host) router is configure as Access Point & the second router (TL-MR3020) is configure as Client mode. Same method should apply to all other OpenWRT routers as well.

Prerequisites
Host router configure as Access Point. If you already setup a wireless internet connection in your house, usually your modem is configured as Access Point mode.
A working OpenWRT on TP-LINK TL-MR3020 Portable 3G/4G Wireless N Router

The routers is configure as two different subnet, assume using settings below as the example.
Host router IP: 192.168.1.1
Host router subnet mask: 255.255.255.0 or 255.255.0.0 if you want to access 192.168.0.x from 192.168.1.x
Host router SSID: ABC
Client router IP: 192.168.0.1
Client router subnet mask: 255.255.255.0

Open up a browser and navigate 192.168.1.1 (TL-MR3020 IP is 192.168.1.1 when flashing with OpenWRT)
Login to TL-MR3020 router & follow step below to complete the setup

Wireless Overview

Join Network

WPA passphrase must same as host router passpharse

Join Network Settings

Wireless Network

The network prefix must be diffrent when using with client mode

Network Interfaces

Network Interfaces - LAN

Click on Save & Apply will reboot TL-MR3020, connect an ethernet cable to your computer, you are ready to use the internet now.

Add a virtual interface (SSID) so that other clients (devices) is able to connect to TL-MR3020 wirelessly