TP-Link TL-MR3420 User manual

TL-MR3420
3G/4G Wireless N Router
REV: 3.0.0
1910011
782

COPYRIGHT & TRADEMARKS
Specifications are subject to change without notice. is a registered trademark
of TP-LINK TECHNOLOGIES CO., LTD. Other brands and product names are trademarks or
registered trademarks of their respective holders.
No part of the specifications may be reproduced in any form or by any means or used to make any
derivative such as translation, transformation, or adaptation without permission from TP-LINK
TECHNOLOGIES CO., LTD. Copyright © 2016 TP-LINK TECHNOLOGIES CO., LTD. All rights
reserved.
http://www.tp-link.com

TP-LINK TECHONOLOGIES CO., LTD
FCC STATEMENT
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
•Consult the dealer or an experienced radio/ TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1）This device may not cause harmful interference.
2）This device must accept any interference received, including interference that may
cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
Note: The manufacturer is not responsible for any radio or TV interference caused by
unauthorized modifications to this equipment. Such modifications could void the user’s authority
to operate the equipment.
FCC RF Radiation Exposure Statement:
This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled
environment. This device and its antenna must not be co-located or operating in conjunction
with any other antenna or transmitter.
“To comply with FCC RF exposure compliance requirements, this grant is applicable to only
Mobile Configurations. The antennas used for this transmitter must be installed to provide a
separation distance of at least 20 cm from all persons and must not be co-located or operating

TP-LINK TECHONOLOGIES CO., LTD
in conjunction with any other antenna or transmitter.
CE Mark Warning
This is a class B product. In a domestic environment, this product may cause radio interference,
in which case the user may be required to take adequate measures.
RF Exposure Information
This device meets the EU requirements (1999/5/EC Article 3.1a) on the limitation of exposure o
f the general public to electromagnetic fields by way of health protection.
The device complies with RF specifications when the device used at 20 cm from your body.
Продукт сертифіковано згідно справилами системи УкрСЕПРО на відповідність вимогам
нормативних документів та вимогам, що передбачені чинними законодавчими актами України.
Safety Information
When product has power button, the power button is one of the way to shut off the product;
when there is no power button, the only way to completely shut off power is to disconnect the
product or the power adapter from the power source.
Don’t disassemble the product, or make repairs yourself. You run the risk of electric shock
and voiding the limited warranty. If you need service, please contact us.
Avoid water and wet locations.
Adapter shall be installed near the equipment and shall be easily accessible.
The plug considered as disconnect device of adapter.
Use only power supplies which are provided by manufacturer and in the original
packing of this product. If you have any questions, please don't hesitate to contact us.
Explanation of the symbols on the product label

TP-LINK TECHONOLOGIES CO., LTD
Symbol Explanation
DC voltage
RECYCLING
This product bears the selective sorting symbol for Waste electrical and electronic
equipment (WEEE). This means that this product must be handled pursuant to European
directive 2012/19/EU in orde
r to be recycled or dismantled to minimize its impact on the
environment.
User has the choice to give his product to a competent recycling organization or to the
retailer when he buys a new electrical or electronic equipment.

I
CONTENTS
Package Contents ....................................................................................................... 1
Chapter 1. Introduction ............................................................................................. 2
1.1 Overview of the Router ...................................................................................................2
1.2 Conventions ....................................................................................................................2
1.3 Main Features.................................................................................................................2
1.4 Panel Layout ...................................................................................................................3
1.4.1 The Front Panel ..................................................................................................3
1.4.2 The Rear Panel...................................................................................................4
1.4.3 The Side Panel ...................................................................................................4
Chapter 2. Connecting the Router ............................................................................ 5
2.1 System Requirements ....................................................................................................5
2.2 Installation Environment Requirements.......................................................................... 5
2.3 Connecting the Router....................................................................................................5
Chapter 3. Quick Installation Guide ......................................................................... 7
3.1 TCP/IP Configuration......................................................................................................7
3.2 Quick Installation Guide..................................................................................................7
Chapter 4. Basic ....................................................................................................... 11
4.1 Network Map................................................................................................................. 11
4.2 Internet.......................................................................................................................... 12
4.3 Wireless ........................................................................................................................ 17
Chapter 5. Configuring the Router ......................................................................... 18
5.1 Status ............................................................................................................................18
5.2 Network......................................................................................................................... 19
5.2.1 Internet Access .................................................................................................19
5.2.2 3G/4G................................................................................................................ 20
5.2.3 WAN .................................................................................................................. 22
5.2.4 MAC Clone........................................................................................................30
5.2.5 LAN ................................................................................................................... 31
5.3 Wireless 2.4GHz...........................................................................................................32
5.3.1 Wireless Settings .............................................................................................. 32
5.3.2 WPS ..................................................................................................................34
5.3.3 Wireless Security .............................................................................................. 35
5.3.4 Wireless MAC Filtering .....................................................................................39
5.3.5 Wireless Advanced ...........................................................................................41
5.3.6 Wireless Statistics .............................................................................................42

II
5.4 DHCP ............................................................................................................................43
5.4.1 DHCP Settings..................................................................................................43
5.4.2 DHCP Clients List .............................................................................................44
5.4.3 Address Reservation.........................................................................................44
5.5 Forwarding ....................................................................................................................46
5.5.1 Virtual Servers...................................................................................................46
5.5.2 Port Triggering ..................................................................................................48
5.5.3 DMZ .................................................................................................................. 50
5.5.4 UPnP.................................................................................................................50
5.6 Security .........................................................................................................................51
5.6.1 Basic Security ...................................................................................................52
5.6.2 Advanced Security............................................................................................53
5.6.3 Local Management ........................................................................................... 55
5.6.4 Remote Management .......................................................................................56
5.7 Parental Control............................................................................................................56
5.8 Access Control..............................................................................................................59
5.8.1 Rule...................................................................................................................59
5.8.2 Host...................................................................................................................64
5.8.3 Target ................................................................................................................ 66
5.8.4 Schedule ...........................................................................................................68
5.9 Advanced Routing ........................................................................................................70
5.9.1 Static Routing List ............................................................................................. 70
5.9.2 System Routing Table....................................................................................... 71
5.10 Bandwidth Control.........................................................................................................72
5.10.1 Control Settings ................................................................................................72
5.10.2 Rules List ..........................................................................................................72
5.11 IP & MAC Binding .........................................................................................................74
5.11.1 Binding Settings ................................................................................................74
5.11.2 ARP List ............................................................................................................75
5.12 Dynamic DNS ............................................................................................................... 76
5.12.1 Comexe DDNS ................................................................................................. 76
5.12.2 Dyn DDNS.........................................................................................................77
5.12.3 No-ip DDNS ...................................................................................................... 78
5.13 IPv6 Support .................................................................................................................79
5.13.1 IPv6 Status........................................................................................................79
5.13.2 IPv6 Setup.........................................................................................................80
5.14 System Tools................................................................................................................. 88

III
5.14.1 Time Settings ....................................................................................................89
5.14.2 Diagnostic ......................................................................................................... 90
5.14.3 Firmware Upgrade ............................................................................................92
5.14.4 Factory Defaults................................................................................................93
5.14.5 Backup & Restore............................................................................................. 93
5.14.6 Reboot...............................................................................................................94
5.14.7 Password ..........................................................................................................95
5.14.8 System Log .......................................................................................................95
5.14.9 Statistics ............................................................................................................ 98
Appendix A: FAQ..................................................................................................... 100
Appendix B: Configuring the PC ........................................................................... 105
Appendix C: Specifications.................................................................................... 109
Appendix D: Glossary ............................................................................................ 110
Appendix E: Compatible 3G/4G USB Modem ....................................................... 112

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TL-MR3420
3G/4G Wireles N Router User Guide
Package Contents
The following items should be found in your package:
TL-MR3420 3G/4G Wireless N Router
DC Power Adapter for TL-MR3420 3G/4G Wireless N Router
Ethernet Cable
Quick Installation Guide

Note:
Make sure that the package contains the above items. If any of the listed items is damaged or
missing, please contact with your distributor.

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TL-MR3420
3G/4G Wireles N Router User Guide
Chapter 1. Introduction
1.1 Overview of the Router
TP-LINK understands the need for sharing the 3G/4G connection locally that benefits our end
users. We realize the convenience with our latest wireless N 3G/4G routers ----- they give you
the freedom to quickly set up a stable and high speed wireless network, up to 300Mbps,
on-the-go and share a 3G/4G connection. By connecting a USB Card to the router, a Wi-Fi
hotspot is instantly established allowing users to share a Internet connection anywhere 3G/4G
coverage is available. So whether you’re on the train, camping, or at a construction site, you’ll
have a reliable wireless connection to accommodate your networking needs.
The TL-MR3420 3G/4G Wireless N router provides 3G/4G and WAN (xDSL, static IP, or
dynamic IP) two kinds of broadband connections to get on the Internet, you can via the Internet
no matter at home or outside on business. Automatic 3G/4G and WAN failover feature just
provide nonstop internet connection.
TP-LINK 3G/4G router provides up to 300Mbps, faster than that of traditional 11g products,
surpasses 11G performance enabling the use of high bandwidth-consuming applications such
as HD Videos.
With just pressing on the 'WPS' button, the router automatically establishes a WPA2 secure
connection for solid security in under a minute.
1.2 Conventions
The router or TL-MR3420 mentioned in this guide stands for TL-MR3420 3G/4G Wireless N
router without any explanation.
1.3 Main Features
One 10/100M Auto-Negotiation RJ45 WAN port, four 10/100M Auto-Negotiation RJ45 LAN
ports, supporting Auto MDI/MDIX
Compatible with LTE/HSPA+/HSUPA/HSDPA/UMTS/EVDO USB modem
Automatic 3G/4G and WAN failover
Wireless N speed up to 300Mbps
2T2R MIMO, CCA technologies deliver greater coverage and higher speed
Wireless security encryption easily at a push of “WPS” button
WDS wireless bridge provides seamless bridging to expand your wireless network
Backward compatible with 802.11b and 802.11g devices
Wi-fi Protected Setup
Incredibly High Speed
3G/4G and WAN Broadband

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3G/4G Wireles N Router User Guide
Provides WPA/W PA2-Enterprise, WPA/WPA2-Personal authentication, TKIP/AES
encryption security
Supports 3G/4G/Dynamic IP/Static IP/PPPoE/L2TP/PPTP Internet access
Supports Virtual Server, Special Application and DMZ host
Supports UPnP, Dynamic DNS, Static Routing
Provides Automatic-connection and Scheduled Connection on certain time to the Internet
Built-in NAT and DHCP server supporting static IP address distributing
Connects Internet on demand and disconnects from the Internet when idle for PPPoE
Provides 64/128-bit WEP encryption security and wireless LAN ACL (Access Control List)
Supports Flow Statistics
Supports IPv6.
Supports firmware upgrade and Web management
1.4 Panel Layout
1.4.1 The Front Panel
The router’s LEDs are located on the front panel (View from left to right).
Item Status Indication
(PWR)
On
Power is on.
Off
Power is off.
(SYS)
On
The router is initializing.
Flashing
The router is working properly.
Off
The router has a system error.
(WLAN)
Flashing
The Wireless function is enabled.
Off
The Wireless function is disabled.
（WAN）
（LAN1-4
）
On
A device is linked to the corresponding port but there is no
activity.
Flashing
An active device is linked to the corresponding port.
Off
No device is linked to the corresponding port.
（USB）
On
The USB 3G/4G modem is connected but no data being
transferred.
Flashing
Data is received or sent through the 3G/4G modem.
Off
The USB 3G/4G modem is not connected.
（WPS）
Slow
Flash
A wireless device is connecting to the network by WPS
function. This process will last in the first 2 minutes.
On
A wireless device has been successfully added to the network
by WPS function.
Quick
Flash
A wireless device failed to be added to the network by WPS
function.

Note:
After a device is successfully added to the network by WPS function, the WPS LED will keep on
for about 5 minutes and then turn off.

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TL-MR3420
3G/4G Wireles N Router User Guide
1.4.2 The Rear Panel
The following parts are located on the rear panel (View from left to right).
POWER: The Power socket is where you will connect the power adapter. Please use the
power adapter provided with this TL-MR3420 3G/4G Wireless N router.
ON/OFF: The switch is for you to turn on/off the router, but only with the router powered on.
4,3,2,1 (LAN): These ports (4,3,2,1) connect the router to the local PC(s)
WAN: This WAN port is where you will connect the DSL/cable Modem, or Ethernet
WPS/RESET:
There are two ways to reset to the router's factory defaults:
1) Use the Factory Defaults function on “System Tools > Factory Defaults” page in the
router's Web-based Utility.
2) Use the Factory Default Reset button: With the router powered on, use a pin to press
and hold the WPS/RESET button (about 5 seconds) until the SYS LED becomes
quick- flashing from slow-flashing. And then release the button and wait the router to
reboot to its factory default settings.
Wireless antenna: To receive and transmit the wireless data.
1.4.3 The Side Panel
The following parts are located on the side plate (View from left to right).
WIFI: This switch is an easy and convenient operation for you to turn on or off the wireless
network.
USB: Connect to the USB Modem.

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TL-MR3420
3G/4G Wireles N Router User Guide
Chapter 2. Connecting the Router
2.1 System Requirements
Broadband Internet Access Service (DSL/Cable/Ethernet)
One DSL/Cable Modem that has an RJ45 connector (which is not necessary if the router is
connected directly to the Ethernet.)
PCs with a working Ethernet Adapter and an Ethernet cable with RJ45 connectors
TCP/IP protocol on each PC
Web browser, such as Microsoft Internet Explorer 5.0 , Netscape Navigator 6.0 or above
2.2 Installation Environment Requirements
Place the router in a well ventilated place far from any heater or heating vent.
Avoid direct irradiation of any strong light (such as sunlight).
Keep at least 2 inches (5 cm) of clear space around the router.
Operating Temperature: 0℃~40℃(32℉~104℉).
Operating Humidity: 10%~90%RH, Non-condensing.
2.3 Connecting the Router
Before installing the router, make sure your PC is connected to the Internet through the
broadband service successfully. If there is any problem, please contact your ISP. After that,
please install the router according to the following steps. Don't forget to pull out the power plug
and keep your hands dry.
1. Power off your Cable/DSL Modem, and the router.
2. Locate an optimum location for the router. The best place is usually at the center of your
wireless network. The place must accord with the Installation Environment Requirements.
3. Adjust the direction of the antenna. Normally, upright is a good direction.
4. Connect the PC(s) or Switch/Hub in your LAN to the LAN Ports of the 3G/4G router with
Ethernet cable.
5. The 3G/4G router supports both 3G/4G and WAN connection; so you can insert 3G/4G
USB Modem to the USB port of the router, or connect the DSL/Cable Modem to the WAN
port of the router. Please visit our website http://www.tp-link.com to get the latest USB
modems compatibility, and we recommend you to check whether the modem in your hand
has already been tested by us.
6. Connect the power adapter to the power socket on the router, and the other end into an
electrical outlet. The router will start to work automatically.
7. Power on your Cable/DSL Modem.

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TL-MR3420
3G/4G Wireles N Router User Guide

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TL-MR3420
3G/4G Wireles N Router User Guide
Chapter 3. Quick Installation Guide
This chapter will show you how to configure the basic functions of your 3G/4G Wireless N router
using Quick Setup Wizard within minutes.
3.1 TCP/IP Configuration
The default IP address of the 3G/4G Wireless N router is 192.168.0.1. And the default Subnet
Mask is 255.255.255.0. These values can be changed as you desire. In this guide, we use all
the default values for description.
Connect the local PC to the LAN ports of the router. And then you can configure the IP address
for your PC in the following two ways.
Configure the IP address manually
1) Set up the TCP/IP Protocol for your PC. If you need instructions as to how to do this,
please refer to Appendix B: Configuring the PC
2) Configure the network parameters. The IP address is 192.168.0.xxx ("xxx" is any number
from 2 to 254), Subnet Mask is 255.255.255.0, and Gateway is 192.168.0.1 (The router's
default IP address)
Obtain an IP address automatically
1) Set up the TCP/IP Protocol in "Obtain an IP address automatically" mode on your PC. If
you need instructions as to how to do this, please refer to Appendix B: Configuring the PC
2) Then the built-in DHCP server will assign IP address for the PC.
3.2 Quick Installation Guide

Note:
If you are trying to connect to TL-MR3420 wirelessly, please refer to the label on the bottom of
the router for the Wireless Password.
1. To access the configuration utility, open a web browser and type in the default address
http://tplinkwifi.net in the address field.
After a moment, a login window will appear, similar to the figure below. Enter admin for the User
Name and Password, both in lower case letters. Then click the OK button or press the Enter
key.

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TL-MR3420
3G/4G Wireles N Router User Guide

Note:
If the above screen does not pop-up, it means that your Web browser has been set to a proxy.
Go to Tools menu > Internet Options > Connections > LAN Settings, cancel the Using
Proxy checkbox, and click OK to finish it.
2. After successful login, the Quick Setup page will appear for you to select your time zone
and click Next.
3. Select a desired Internet Access mode and then click Next. The configuration for each
mode is similar. As follows we will take 3G/4G Only mode for example.
3G/4G Only
In this mode, the router will try 3G/4G access only. WAN access is disabled.
3G/4G Preferred
In this mode, the router will try 3G/4G access first. If 3G/4G access fails and WAN
access is valid, or if no 3G/4G USB modem is inserted, the router would switch to WAN
access. Once the router succeeds to connect to the 3G/4G network, the router would
stop the WAN connection and switch back to 3G/4G access immediately.
WAN Preferred
In this mode, the router will try WAN access first. If the WAN access fails and 3G/4G
access is valid, the router would switch to 3G/4G access. Once the router succeeds to
connect to the WAN network, the router would stop the 3G/4G connection and switch
back to WAN access immediately.
WAN Only
In this mode, the router will try WAN access only. 3G/4G access is disabled.
4. The next screen will appear as shown in the figure below. You need to set the required
parameters and then click Next.

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TL-MR3420
3G/4G Wireles N Router User Guide
Mobile ISP - Select the ISP (Internet Service Provider) you apply to for 3G/4G service. The
router will show the default Dial Number and APN of that ISP. If your ISP is not listed in the
Mobile ISP, check the box before Set the Dial Number, APN, Username and Password
manually and fill the Dial Number and APN blanks below.
Authentication Type - Some ISPs need a specific authentication type. Please confirm it
with your ISP or keep it Auto.
Dial Number & APN - Set these two parameters manually after Set the Dial Number, APN,
Username and Password manually is checked.
Username/Password - Enter the Username and Password provided by your ISP. These
fields are optional but case-sensitive.
5. Configure the Wireless settings on the screen as shown in the figure below then click Next.
Wireless 2.4GHz - Displays whether the wireless function is enabled or not.
Network Name (SSID) - Also called the SSID (Service Set Identification). Enter a value of
up to 32 characters. The same name must be assigned to all wireless devices in your
network. This value is case-sensitive. For example, TEST is NOT the same as test.
Password - Create a password for your wireless network.
6. Click Finish to complete the Quick Setup.

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TL-MR3420
3G/4G Wireles N Router User Guide
After the rebooting, please check whether you can access the Internet or not in the 5.1 Status
page.

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TL-MR3420
3G/4G Wireles N Router User Guide
Chapter 4. Basic
4.1 Network Map
Network Map provides a router-centered dashboard that lets you see the status of your
Internet connection and network at a glance. You can click any of the six sections of the
dashboard to view the detail information. All the information is read-only.
Internet - Click to view the ISP settings of your router.
Wireless Clients - Click to view the wireless devices connected to your network.
Wired Clients -Click to view the wired devices connected to your network.
Wireless - Click to view or change the wireless settings for your router.
3G/4G - Click to view or change the parameters apply to the 3G/4G USB modem of the
router.
USB Disk -Click to view the information of the USB storage device connected to your
network.

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TL-MR3420
3G/4G Wireles N Router User Guide
4.2 Internet
Choose menu “Basic > Internet”, and you can view or change the basic ISP information for
your router.
3G/4G
3G/4G USB Modem - 3G/4G device status Plugged or Unplugged.
Mobile ISP - Please select the ISP(Internet Service Provider) you apply to for 3G/4G
service. The router will show the default Dial Number and APN of that ISP.
Connection Mode - Please select the Connection Mode to accessing the Internet with
3G/4G.
Connect on Demand - You can configure the router to disconnect your Internet
connection after a specified period of the Internet connectivity (Max Idle Time). If
your Internet connection has been terminated due to inactivity, Connect on
Demand enables the router to automatically re-establish your connection as soon
as you attempt to access the Internet again. If you wish to activate Connect on
Demand, click the radio button. If you want your Internet connection to remain
active at all times, enter 0in the Max Idle Time field. Otherwise, enter the number
of minutes you want to have elapsed before your Internet connection terminates.
Note - Sometimes the connection cannot be disconnected although you specify a
time to Max Idle Time because some applications visit the Internet continually in
the background.
Connect Automatically -Connect automatically after the router is disconnected.
To use this option, click the radio button.
Connect Manually -You can configure the router to make it connect or disconnect
manually. After a specified period of inactivity (Max Idle Time), the router will
disconnect your Internet connection, and not be able to re-establish your
connection automatically as soon as you attempt to access the Internet again. To
use this option, click the radio button. If you want your Internet connection to
remain active at all times, enter 0in the Max Idle Timefield. Otherwise, enter the