How to change the DNS settings on a TP-Link TL-MR3420 router. Mr3420 tp link настройка роутера


How to change the DNS settings on the TP-Link TL-MR3420

This page shows how to change the DNS settings on the TP-Link TL-MR3420 router.

Other TP-Link TL-MR3420 Guides

What is the DNS setting on a Router

When you connect a router to the Internet it gets a few settings from your ISP automatically. One of the settings that the ISP sets in your router is the DNS setting. DNS stands for Domain Name System and it is used to convert Internet names into actual IP addresses. For instance, when you go to "google.com", your are really connecting to an IP address that is mapped through DNS to a number such as:

This mapping happens automatically every time you visit any page on the Internet.

Why Change Your Router's DNS Setting

Some ISPs choose to abuse the DNS system and map unknown names to servers that they control. This can be done in a way that you don't know it is happening since your router is getting its DNS settings from your ISP. For instance, if you have one of these ISPs who is hijacking your DNS, and you try to surf the web to "some-random-site.com" and "some-random-site.com" does not exist, you might get a page back from your ISP with local advertisements on it.

By changing your DNS setting in your router you will effectively change the DNS setting for every computer on your network. This is because when a device is connected to your network your router automatically hands out its own DNS settings to that device. This way you can protect your entire network from ISP hijacking with just one setting.

What Should I Change My DNS To

There are 2 really great DNS servers on the Internet that you can choose from right now: Google Public DNS and OpenDNS. If you are not sure which one to pick then just use Google Public DNS.

When you change the DNS settings in your router, you usually have to enter a Primary and a Secondary setting. The secondary is only used if the primary can not be located. Here are common settings:

If you want to use Google Public DNS, use the following settings:

  • Primary: 8.8.8.8
  • Secondary: 8.8.4.4

If you want to use OpenDNS, use the following settings:

  • 208.67.222.222
  • 208.67.220.220

Login To The TP-Link TL-MR3420

To get started configuring the TP-Link TL-MR3420 DNS page you need to login to your router. If you are already logged in you can skip this step.

To login to the TP-Link TL-MR3420, follow our TP-Link TL-MR3420 Login Guide.

Change the DNS settings on a TP-Link TL-MR3420

If you followed our login guide above then you should see this screen.

This guide begins on the Status page of the TP-Link TL-MR3420 router. To change the Domain Name System or DNS settings, click the choice in the left side-bar labeled DHCP. Then under that, pick DHCP Settings.

Configure the DNS section of your TP-Link TL-MR3420

You should now be on a page like the one you see above. Looking down this page, find the box labeled Primary DNS and enter the primary or main address of the DNS server you wish to use. This address is always going to be used first.

Directly below that is the Secondary DNS. Use this space to enter the secondary DNS server address of your choice. Remembering that this address is a back-up and only used when the first can't be found.

That is all for this page, finish by clicking the Save button. We also are recommending that you set the WAN side DNS server. Tick the link on the left labeled Network, and under that WAN.

On this new page, tick the box that reads Use These DNS Servers.

In the box titled Primary DNS, enter the same primary address you entered on the previous page.

Then, in the box labeled Secondary DNS, enter the same secondary address you entered on the last page.

That's all you need to do, just click the Save button before you exit.

Possible Problems when Changing your DNS settings

Most devices on your network will not begin using the new DNS settings until they have been rebooted. After rebooting a device you can go to it's network settings and verify that it is using the DNS servers that you specified.

Other TP-Link TL-MR3420 Info

Don't forget about our other TP-Link TL-MR3420 info that you might be interested in.

Written by Rachel Bauer
Rachel Bauer is an owner and primary author for SetupRouter.com. She is available on Google+ and you can find more of her articles in the Networking section of our site.

setuprouter.com

Обновление прошивки, настройка Интернет, Wi-Fi сети на TP-Link TL-MR3420 + видео

Для начала рассмотрим общий вид подключения:

1 Подключите Ethernet кабель провайдера (если будете использовать WAN подключение)

2 Подключите компьютер/ ноутбук к порту любому порту LAN (их 4) с помощью Ethernet кабеля (он идет в комплекте).

3 Подключите 3G/ 4G модем (если будете использовать 3G/ 4G подключение).

4 Подключите адаптер питания в разъём маршрутизатора TL-MR3420.

5 Нажмите кнопку ON/OFF для включения маршрутизатора TP-Link MR3220.

Далее разберем о чем нас информирует передняя панель с индикаторами:

Индикатор - ПитанияНе горитTP-Link MR3420 выключен.ГоритПитание включено.

Индикатор - Система

ГоритМаршрутизатор загружается.МигаетМаршрутизатор в рабочем режиме.Не горитНаличие системной ошибки

Индикатор- Беспроводная сеть Wi- FiНе горитСеть Wi- Fi выключена.ГоритСеть Wi- Fi включена.

Порты WAN, LAN 1-4 Подключение к сетевым разъемамНе горитНе подключен кабель к соответствующему разъему интернет-центра, или сетевое соединение не установлено.Горит или мигаетСетевое соединение установлено, идет передача информации.

Индикатор- Порт USB

Горит3G/4G USB-модем подключён, но передача данных не производится.МигаетЧерез 3G/4G модем передается информация.Не горит3G/4G USB-модем не подключён.

Индикатор- WPSМедленно мигает Беспроводное устройство подключается к сети. Этот процесс займет около 2-х минут.Горит Беспроводное устройство было успешно добавлено к сети.Быстро мигает Устройство не было подключено к сети.Не горитФункция WPS отключена.

Для того, что бы настроить TL-MR3420, необходимо на компьютере/ ноутбуке изменить сетевые настройки на автоматическое получением сетевых настроек. После этого на компьютере/ ноутбуке откройте любой браузер (IE, Chrome, Firefox, Опера) и в адресной строке введите IP адрес маршрутизатора 192.168.0.1. Далее необходимо ввести логин и пароль, по умолчанию логин- admin, пароль- admin.

Обновление прошивки TP-Link MR3420.

Для более стабильной и безопасной работы маршрутизатора TP-Link MR3420, первым делом необходимо обновить прошивку. Для этого в окне Состояния смотрим версию оборудования и версию установленной прошивки.

После этого на компьютере/ ноутбуке имеющем доступ в Интернет заходим на сайт TP-Link выбираем версию оборудования (в данном примере V2) и скачиваем для нее последнюю прошивку.

Внимание!!! Скачивать прошивку необходимо именно для вашей аппаратной версии. Неправильно выбранная прошивка может повредить ваше устройство.

Разархивируйте скаченный архив. В итоге у вас должна быть папка с файлом расширением .bin.

Затем на веб интерфейсе роутера зайдите "Системные инструменты"- "Обновление встроенного ПО". Далее нажмите кнопку "Обзор", выберите папку с скаченным архивом прошивки и нажмите "Обновить".

Внимание!!! Во время обновления прошивки не следует выключать роутер или компьютер/ ноутбук, поскольку это может вывести сетевое устройство из строя.

 В подтверждающем окне нажмите "Ок".

Во время обновления прошивки TP-Link TL-MR3420, ротутер перезагрузится. После загрузки в окне остояния вы увидите новую версию прошивки.

Настройка Интернета на маршрутизаторе TP-Link TL-MR3420.

После обновления прошивки можно приступить к настройке Интернета. Для этого на веб интерфейсе в меню выберите "Сеть"- "Доступ в Интернет". Далее необходимо определиться каким из 4 режимов вы будете пользоваться. Выбираете какой режим вам подходит и нажимаете "Сохранить".

Если выбранный вами режим подразумевает наличие 3G/ 4G модема, необходимо зайти в меню "Сеть"- "3G/ 4G". Выбрать Регион и Поставщика услуг мобильного Интернета. Не забудьте нажать кнопку "Сохранить".

Затем, если вы используете подключение по Ethernet, зайдите в меню "Сеть"- "WAN" в строке "Тип подключения WAN" выберите тип подключения, его можно уточнить у провайдера, далее, если это необходимо, введите логин и пароль данные провайдером. В конце настроек нажмите "Сохранить".

Настройка Wi-Fi сети на маршрутизаторе TP-Link MR3420.

 Следующим шагом можно приступить к настройке Wi-Fi на маршрутизаторе TL-MR3420. Стоить заметить, что по умолчанию Wi-Fi сеть настроена и логин и пароль от нее вы можете обнаружить на наклейке на роутере. 

Если вы хотите изменить имя сети (SSID) или пароль, необходимо зайти на веб интерфейс, выбрать "Беспроводной режим"- "Настройка беспроводного режима". В поле Имя сети введите новое имя, в данном примере pk-help.com. Если хотите получить более стабильную сеть Wi-Fi, рекомендую определить свободный канал и указать его в строке "Канал", более подробно как это сделать в статье Как выбрать/ изменить беспроводной канал на маршрутизаторе/ роутере. Сохраните изменения.

Что бы изменить пароль от Wi-Fi сети зайдите в "Беспроводной режим"- "Защита беспроводного режима". Для наиболее безопасного использования Wi-Fi сети тип аутентификации рекомендую выбрать WPA-PSK/ WPA2-PSK. Далее в строке Пароль PSK, введите пароль для подключения к Wi-Fi сети. Рекомендую использовать сложный пароль- не менее 8 символов с буквами, цифрами и спец. знаками (!#$). Сохраните настройки.

Изменение пароля для входа не веб интерфейс TP-Link MR3420.

Для более безопасной работы роутера настоятельно рекомендую изменить логин и пароль для входа в веб-интерфейс. Для этого в веб интерфейсе TP-Link MR3420, зайдите в "Системные инструменты"- "Пароль". Введите предыдущие логин и пароль (логин- admin, пароль- admin) и новые.

После этого система предложит зайти на веб интерфейс уже под новыми учетными данными.

После конфигурирования роутера, можно приступить к настройке локальной сети на Windows XP или Windows 7, сделать сетевую папку или настроить сетевой принтер.

Я очень надеюсь, моя статья помогла Вам! Просьба поделиться ссылкой с друзьями:

pk-help.com

Setup WiFi on the TP-Link TL-MR3420

The TP-Link TL-MR3420 router is considered a wireless router because it offers WiFi connectivity. WiFi, or simply wireless, allows you to connect various devices to your router, such as wireless printers, smart televisions, and WiFi enabled smartphones.

Other TP-Link TL-MR3420 Guides

WiFi Terms

Before we get started there is a little bit of background info that you should be familiar with.

Wireless Name

Your wireless network needs to have a name to uniquely identify it from other wireless networks. If you are not sure what this means we have a guide explaining what a wireless name is that you can read for more information.

Wireless Password

An important part of securing your wireless network is choosing a strong password.

Wireless Channel

Picking a WiFi channel is not always a simple task. Be sure to read about WiFi channels before making the choice.

Encryption

You should almost definitely pick WPA2 for your networks encryption. If you are unsure, be sure to read our WEP vs WPA guide first.

Login To The TP-Link TL-MR3420

To get started configuring the TP-Link TL-MR3420 WiFi settings you need to login to your router. If you are already logged in you can skip this step.

To login to the TP-Link TL-MR3420, follow our TP-Link TL-MR3420 Login Guide.

Find the WiFi Settings on the TP-Link TL-MR3420

If you followed our login guide above then you should see this screen.

This guide begins on the Status page of the TP-Link TL-MR3420 router. To setup the wireless, click the link in the left sidebar labeled Wireless. Then beneath that pick the new option of Wireless Settings.

Change the WiFi Settings on the TP-Link TL-MR3420

This takes you to the page you see here. First, you need to change the SSID. Place your cursor in the box labeled Wireless Network Name and enter a new name for your network. This can be anything you like but it's a good idea to stay away from personal information. Want to know more? Check out this guide.

Directly beneath that is the Region. Go ahead and make sure the region is set to the one in which this router is being used.

Now let's take a look at what channel you are using. Open up the drop-down list titled Channel and select the one you want to use. We recommend using channels 1,6, or 11. Find out why in this guide.

Click the Save button.

Looking back in the left sidebar click the option of Wireless Security.

On this page, select the radio button near the bottom of the page labeled WPA/WPA2 - Personal(Recommended).

Just below that is the Version. For the best security available right now, choose WPA2-PSK. To learn more, read this guide.

Go ahead and set the Encryption to AES.

The last setting you need to change is called the PSK Password. This is your internet password. Don't skip this step, your password is an important part of the security. Use no less than 14 characters here with some symbols, numbers, and capital letters mixed in. To create a very strong and memorable password, check out this guide.

That's it, just click the Save button and you are done.

Possible Problems when Changing your WiFi Settings

After making these changes to your router you will almost definitely have to reconnect any previously connected devices. This is usually done at the device itself and not at your computer.

Other TP-Link TL-MR3420 Info

Don't forget about our other TP-Link TL-MR3420 info that you might be interested in.

Written by Rachel Bauer
Rachel Bauer is an owner and primary author for SetupRouter.com. She is available on Google+ and you can find more of her articles in the Networking section of our site.

setuprouter.com

TP LINK TL-MR3420 USER MANUAL Pdf Download.

  • Page 1

    TL-MR3420 3G/3.75G Wireless N Router Rev: 1.0.0 1910010314...

  • Page 2: Fcc Statement

    COPYRIGHT & TRADEMARKS Specifications are subject to change without notice. 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.

  • Page 3: Ce Mark Warning, National Restrictions

    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.

  • Page 4: Declaration Of Conformity

    DECLARATION OF CONFORMITY For the following equipment: Product Description: 3G/3.75G Wireless N Router Model No.: TL-MR3420 Trademark: TP-LINK We declare under our own responsibility that the above products satisfy all the technical regulations applicable to the product within the scope of Council Directives:...

  • Page 5: Table Of Contents

    Package Contents ... 1 Chapter 1. Introduction... 2 Overview of the Router... 2 Conventions ... 2 Main Features ... 3 Panel Layout ... 3 1.4.1 The Front Panel ... 3 1.4.2 The Rear Panel ... 4 Chapter 2. Connecting the Router ... 6 System Requirements ...

  • Page 6: Table Of Contents

    4.7.1 DHCP Settings ... 56 4.7.2 DHCP Clients List ... 58 4.7.3 Address Reservation ... 58 Forwarding ... 60 4.8.1 Virtual Servers ... 60 4.8.2 Port Triggering ... 62 4.8.3 DMZ... 64 4.8.4 UPnP ... 64 Security ... 65 4.9.1 Basic Security... 66 4.9.2 Advanced Security...

  • Page 7: Table Of Contents

    4.16.7 Password... 97 4.16.8 System Log... 98 4.16.9 Statistics ... 100 Appendix A: FAQ ... 102 Appendix B: Configuring the PCs... 107 Appendix C: Specifications ...111 Appendix D: Glossary...112 Appendix E: Compatible 3G/3.75G USB Modem ...114...

  • Page 8: Package Contents

    Package Contents The following items should be found in your package: TL-MR3420 3G/3.75G Wireless N Router DC Power Adapter for TL-MR3420 3G/3.75G Wireless N Router Quick Installation Guide Resource CD for TL-MR3420 3G/3.75G Wireless N Router, including: • This Guide •...

  • Page 9: Overview Of The Router, Conventions, Chapter 1. Introduction

    3G/WAN Broadband Connection The TL-MR3420 3G/3.75G Wireless N Router provides 3G 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 in home or outside on business.

  • Page 10: Main Features, Panel Layout, The Front Panel

    Connects Internet on demand and disconnects from the Internet when idle for PPPoE Provides 64/128/152-bit WEP encryption security and wireless LAN ACL (Access Control List) Supports Flow Statistics Supports firmware upgrade and Web management Panel Layout 1.4.1 The Front Panel TL-MR3420 Figure 1-1 Front Panel sketch 3G/3.75G Wireless N Router...

  • Page 11: The Rear Panel

    Wireless antenna: To receive and transmit the wireless data. POWER: The Power socket is where you will connect the power adapter. Please use the power adapter provided with this TL-MR3420 3G/3.75G Wireless N Router. WAN: This WAN port is where you will connect the DSL/cable Modem, or Ethernet 1,2,3,4 (LAN): These ports (1, 2, 3, 4) connect the Router to the local PC(s) USB: Connect to the USB Modem.

  • Page 12

    Use the Factory Default Reset button: With the Router powered on, use a pin to press and hold the Reset button (about 5 seconds) until the SYS LED becomes quick-flash from slow-flash. And then release the button and wait the Router to reboot to its factory default settings. TL-MR3420 3G/3.75G Wireless N Router...

  • Page 13: System Requirements, Installation Environment Requirements, Connecting The Router, Chapter 2. Connecting The Router

    Connect the DSL/Cable Modem to the WAN port of the 3G Router, shown in Figure 2-1. 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 TL-MR3420 (32 ~104 ) ℃...

  • Page 14

    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. Power on your PC and Cable/DSL Modem. Figure 2-1 Hardware Installation of the 3G/3.75G Wireless N Router TL-MR3420 3G/3.75G Wireless N Router...

  • Page 15: Tcp/ip Configuration, Chapter 3. Quick Installation Guide

    Open a command prompt, and type ping 192.168.1.1, and then press Enter. If the result displayed is similar to the Figure 3-1, it means the connection between your PC and the Router has been established well. TL-MR3420 3G/3.75G Wireless N Router Appendix B: "Configuring the...

  • Page 16

    Please check the connection following these steps: Is the connection between your PC and the Router correct? Note: The 1/2/3/4 LEDs of LAN ports which you link to on the Router and LEDs on your PC's adapter should be lit. TL-MR3420 3G/3.75G Wireless N Router...

  • Page 17: Quick Installation Guide

    Tools menu>Internet Options>Connections>LAN Settings, in the screen that appears, cancel the Using Proxy checkbox, and click OK to finish it. After successfully login, you can click the Quick Setup to quickly configure your Router. TL-MR3420 ® Navigator) utility, it is easy to configure and...

  • Page 18

    In this mode, the router will try WAN access first. If the WAN access fails, and 3G access is valid, the router would switch to 3G access. Once the router succeeds to connect to the WAN TL-MR3420 3G/3.75G Wireless N Router...

  • Page 19

    You will then see Figure 3-8. Select Auto-Detect, the Router will automatically detect the connection type your ISP provides. Make sure the cable is securely plugged into the WAN port before detection. The appropriate configuration page will be displayed when an active TL-MR3420 3G/3.75G Wireless N Router Figure 3-7...

  • Page 20

    TL-MR3420 3G/3.75G Wireless N Router Internet service is successfully detected by the Router. Figure 3-8 If the connection type detected is PPPoE, the next screen will appear as shown in Figure 3-9. Enter the User Name and Password provided by your ISP. These fields are case sensitive. If you have difficulty with this process, please contact your ISP.

  • Page 21

    TL-MR3420 3G/3.75G Wireless N Router Figure 3-10 Quick Setup - Static IP Click Next to continue, the Wireless settings page will appear as shown in Figure 3-11. Figure 3-11 Quick Setup – Wireless Wireless Radio - Enable or disable the wireless radio choosing from the pull-down list.

  • Page 22

    Click the Next button. You will then see the Finish page. If you don’t make any changes on the Wireless page, you will see the Finish page as shown in Figure 3-12. Click the Finish button to finish the Quick Setup. TL-MR3420 3G/3.75G Wireless N Router -15-...

  • Page 23

    Note: The configuration for 3G Only, WAN Preferred and WAN Only mode is very similar to 3G Preferred mode. Here we just take 3G Preferred for example. TL-MR3420 Figure 3-12 Quick Setup – Finish Figure 3-13 Quick Setup – Finish -16- 3G/3.75G Wireless N Router...

  • Page 24: Login, Status, Chapter 4. Configuring The Router

    On the right, there are the corresponding explanations and instructions. The detailed explanations for each Web page’s key function are listed below. Status The Status page provides the current status information about the Router. All information is read-only. TL-MR3420 3G/3.75G Wireless N Router -17-...

  • Page 25

    TL-MR3420 3G/3.75G Wireless N Router Figure 4-1 Router Status -18-...

  • Page 26: Quick Setup

    For the configuration of the new device, here takes the Wireless Adapter of our company for example. By PBC If the wireless adapter supports Wi-Fi Protected Setup and the Push Button Configuration (PBC) TL-MR3420 3G/3.75G Wireless N Router Figure 4-2 QSS -19-...

  • Page 27

    TL-MR3420 3G/3.75G Wireless N Router method, you can add it to the network by PBC with the following two methods. Method One: Step 1: Press the QSS button on the front panel of the Router. Step 2: Press and hold the QSS button of the adapter directly for 2 or 3 seconds.

  • Page 28

    The QSS Configuration Screen of Wireless Adapter Method Three: Step 1: Keep the default QSS Status as Enabled and click the Add device button in Figure 4-2 , then the following screen will appear. TL-MR3420 3G/3.75G Wireless N Router -21-...

  • Page 29

    QSS as below, and click Next. The QSS Configuration Screen of Wireless Adapter Step 4: Wait for a while until the next screen appears. Click Finish to complete the QSS configuration. TL-MR3420 Figure 4-3 Add A New Device -22- 3G/3.75G Wireless N Router...

  • Page 30

    The PIN code of the adapter is always displayed on the QSS configuration screen Step 3: For the configuration of the wireless adapter, please choose Enter a PIN into my access point or a registrar in the configuration utility of the QSS as below, and click Next. TL-MR3420 3G/3.75G Wireless N Router -23-...

  • Page 31

    QSS as below, and enter the PIN code of the Router into the field behind Access Point PIN. Then click Next. The QSS Configuration Screen of Wireless Adapter TL-MR3420 3G/3.75G Wireless N Router -24-...

  • Page 32: Network, Internet Access

    Choose menu “Network→Internet Access”, you can configure the access mode on the screen below. The router is designed to work with either WAN port or 3G USB modem, and supports automatically take over back up with 3G access as Ethernet WAN failover. TL-MR3420 3G/3.75G Wireless N Router -25-...

  • Page 33

    3) If you are using the 3G Preferred or WAN Preferred, the router would connect, disconnect or switch the current access automatically. The Connect/Disconnect button (on 3G, PPPoE, PPTP, L2TP) and some related parameters could not be set manually. TL-MR3420 Figure 4-5 Internet Access Mode -26-...

  • Page 34

    TL-MR3420 3G/3.75G Wireless N Router 4.5.2 3G Choose menu “Network→3G”, you can configure parameters for 3G function on the screen below. To use the 3G function, you should first insert your USB modem on the USB port of the Router.

  • Page 35

    TL-MR3420 3G/3.75G Wireless N Router Figure 4-6 3G Figure 4-7 Location - Please select the location where you're enjoying the 3G card. Mobile ISP - Please select the ISP (Internet Service Provider) you apply to for 3G service. The router will show the default Dial Number and APN of that ISP.

  • Page 36

    Click the Connect button to connect to your 3G network. Once the connection is successful, you will find the 3G screen is similar to Figure 4-8. Click menu Status and you will see the 3G status is similar to Figure 4-9. TL-MR3420 3G/3.75G Wireless N Router -29-...

  • Page 37

    TL-MR3420 3G/3.75G Wireless N Router Figure 4-8 -30-...

  • Page 38

    Internet connecting last unless a new link requested. 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. TL-MR3420 3G/3.75G Wireless N Router Figure 4-9 -31-...

  • Page 39

    2. Click the Add New... button in Figure 4-10, and then you will see Figure 4-11. 3. Click Browse… to select the path name where you save the downloaded file on the computer into the File blank. 4. Click the Upload button to upload the configuration. TL-MR3420 3G/3.75G Wireless N Router -32-...

  • Page 40

    If your ISP provides the DHCP service, please choose Dynamic IP type, and the Router will automatically get IP parameters from your ISP. You can see the page as follows (Figure 4-12): TL-MR3420 3G/3.75G Wireless N Router if you want to use WAN.

  • Page 41

    You should contact your ISP to get DNS server addresses. Host Name - This option specifies the Host Name of the Router. Get IP with Unicast DHCP - A few ISPs' DHCP servers do not support the broadcast TL-MR3420 Figure 4-12 WAN - Dynamic IP -34- 3G/3.75G Wireless N Router...

  • Page 42

    Primary/Secondary DNS - (Optional) Enter one or two DNS addresses in dotted-decimal notation provided by your ISP. If your ISP provides a PPPoE connection, select PPPoE option. And you should enter the following parameters (Figure 4-14): TL-MR3420 Figure 4-13 WAN - Static IP -35- 3G/3.75G Wireless N Router...

  • Page 43

    Internet again. If you want your Internet connection keeps active all the time, please enter “0” in the Max Idle Time field. Otherwise, enter the number of minutes you want to have elapsed before your Internet access disconnects. TL-MR3420 3G/3.75G Wireless N Router -36-...

  • Page 44

    MTU Size - The default MTU size is “1480” bytes, which is usually fine. It is not recommended that you change the default MTU Size unless required by your ISP. Service Name/AC Name - The service name and AC (Access Concentrator) name, which TL-MR3420 3G/3.75G Wireless N Router -37-...

  • Page 45

    Click the Save button to save your settings. If your ISP provides BigPond Cable (or Heart Beat Signal) connection, please select BigPond Cable. And you should enter the following parameters (Figure 4-16): TL-MR3420 3G/3.75G Wireless N Router Figure 4-16 -38-...

  • Page 46

    Time because some applications are visiting the Internet continually in the background. Click the Save button to save your settings. If your ISP provides L2TP connection, please select L2TP option. And you should enter the following parameters (Figure 4-17): TL-MR3420 3G/3.75G Wireless N Router -39-...

  • Page 47

    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 0 in the Max Idle Time field. Otherwise, enter the number of minutes you want to have elapsed before your Internet connection terminates. TL-MR3420 3G/3.75G Wireless N Router -40-...

  • Page 48

    Caution: Sometimes the connection cannot be disconnected although you specify a time to Max Idle Time, since some applications is visiting the Internet continually in the background. If your ISP provides PPTP connection, please select PPTP option. And you should enter the following parameters (Figure 4-18): TL-MR3420 3G/3.75G Wireless N Router -41-...

  • Page 49

    Click the Connect button to connect immediately. Click the Disconnect button to disconnect immediately. Connect on Demand - You can configure the Router to disconnect from your Internet connection after a specified period of inactivity (Max Idle Time). If your Internet connection TL-MR3420 3G/3.75G Wireless N Router -42-...

  • Page 50: Mac Clone

    The Router can not detect PPTP/L2TP/BigPond connections with your ISP. If your ISP uses one of these protocols, then you must configure your connection manually. 4.5.4 MAC Clone Choose menu “Network→MAC Clone”, you can configure the MAC address of the WAN on the screen below, Figure 4-19: TL-MR3420 3G/3.75G Wireless N Router -43-...

  • Page 51

    MAC Address - The physical address of the Router, as seen from the LAN. The value can't be changed. IP Address - Enter the IP address of your Router or reset it in dotted-decimal notation TL-MR3420 Figure 4-19 MAC Address Clone Figure 4-20 LAN -44- 3G/3.75G Wireless N Router...

  • Page 52: Wireless, Wireless Settings

    Wireless Security, Wireless MAC Filtering, Wireless Advanced and Wireless Statistics. Click any of them, and you will be able to configure the corresponding function. 4.6.1 Wireless Settings Choose menu “Wireless→Wireless Setting”, you can configure the basic settings for the wireless network on this page. TL-MR3420 3G/3.75G Wireless N Router -45-...

  • Page 53

    TL-MR3420 3G/3.75G Wireless N Router Figure 4-22 Wireless Settings SSID - Enter a value of up to 32 characters. The same name of SSID (Service Set Identification) must be assigned to all wireless devices in your network. Considering your wireless network security, the default SSID is set to be TP-LINK_XXXXXX (XXXXXX indicates the last unique six numbers of each Router’s MAC address).

  • Page 54

    20M, which is unable to be changed. Max Tx Rate - You can limit the maximum tx rate of the Router through this field. Enable Wireless Router Radio - The wireless radio of this Router can be enabled or disabled to allow wireless stations access.

  • Page 55: Wireless Security

    Choose menu “Wireless→Wireless Security”, you can configure the security settings of your wireless network. There are five wireless security modes supported by the Router: WEP (Wired Equivalent Privacy), WPA (Wi-Fi Protected Access), WPA2 (Wi-Fi Protected Access 2), WPA2-PSK (Pre-Shared Key), WPA-PSK (Pre-Shared Key). TL-MR3420 3G/3.75G Wireless N Router -48-...

  • Page 56

    TL-MR3420 3G/3.75G Wireless N Router Figure 4-23 Disable Security - If you do not want to use wireless security, select this check box, but it’s strongly recommended to choose one of the following modes to enable security. WEP - It is based on the IEEE 802.11 standard. If you select this check box, you will find a notice in red as show in Figure 4-24.

  • Page 57

    Automatic, which can select WPA (Wi-Fi Protected Access) or WPA2 (WPA version 2) automatically based on the wireless station's capability and request. • Encryption - You can select either Automatic, or TKIP or AES. TL-MR3420 3G/3.75G Wireless N Router Figure 4-24...

  • Page 58

    • Encryption - When WPA-PSK or WPA is set as the Authentication Type, you can select either Automatic, or TKIP or AES as Encryption. Note: If you check the WPA-PSK/WPA2-PSK find a notice in red as shown in TL-MR3420 3G/3.75G Wireless N Router Figure 4-25 radio button and choose TKIP encryption, you will Figure 4-19.

  • Page 59: Wireless Mac Filtering

    Description - A simple description of the wireless station. To Add a Wireless MAC Address filtering entry, click the Add New… button. The "Add or Modify Wireless MAC Address Filtering entry" page will appear, shown in Figure 4-28: TL-MR3420 3G/3.75G Wireless N Router -52-...

  • Page 60

    B with MAC address 00-0A-EB-00-23-11 are able to access the Router, but all the other wireless stations cannot access the Router, you can configure the Wireless MAC Address Filtering list by following these steps: 1. Click the Enable button to enable this function. TL-MR3420 3G/3.75G Wireless N Router hexadecimal digit).

  • Page 61: Wireless Advanced

    Transmit Power - Here you can specify the transmit power of Router. You can select High, Middle or Low which you would like. High is the default setting and is recommended. TL-MR3420 Figure 4-29 Wireless Advanced -54- 3G/3.75G Wireless N Router...

  • Page 62: Wireless Statistics

    4.6.5 Wireless Statistics Choose menu “Wireless→Wireless Statistics”, you can see the MAC Address, Current Status, Received Packets and Sent Packets for each connected wireless station. TL-MR3420 3G/3.75G Wireless N Router -55-...

  • Page 63: Dhcp, Dhcp Settings

    (shown in Figure 4-32 ).The Router is set up by default as a DHCP (Dynamic Host Configuration Protocol) server, which provides the TCP/IP configuration for all the PC(s) that are connected to the Router on the LAN. TL-MR3420 3G/3.75G Wireless N Router -56-...

  • Page 64

    TL-MR3420 3G/3.75G Wireless N Router Figure 4-32 DHCP Settings DHCP Server - Enable or Disable the DHCP server. If you disable the Server, you must have another DHCP server within your network or else you must configure the computer manually.

  • Page 65: Dhcp Clients List, Address Reservation

    PC on the LAN, that PC will always receive the same IP address each time when it accesses the DHCP server. Reserved IP addresses should be assigned to the servers that require permanent IP settings. TL-MR3420 Figure 4-33 DHCP Clients List -58-...

  • Page 66

    Click the Modify in the entry you want to modify. If you want to delete the entry, click the Delete. Modify the information. Click the Save button. Click the Enable/ Disabled All button to make all entries enabled/disabled TL-MR3420 Figure 4-34 Address Reservation -59- 3G/3.75G Wireless N Router...

  • Page 67: Forwarding, Virtual Servers

    (in XXX – YYY format, XXX is the start port number, YYY is the end port number). IP Address - The IP Address of the PC providing the service application. TL-MR3420 Figure 4-37 Virtual Servers -60- 3G/3.75G Wireless N Router...

  • Page 68

    Click the Modify in the entry you want to modify. If you want to delete the entry, click the Delete. Modify the information. Click the Save button. Click the Enable/ Disabled All button to make all entries enabled/ disabled. Click the Delete All button to delete all entries. TL-MR3420 3G/3.75G Wireless N Router -61-...

  • Page 69: Port Triggering

    A response using one of these ports will be forwarded to the PC that triggered this rule. You can input at most 5 groups of ports (or port section). TL-MR3420 Figure 4-39 Port Triggering -62-...

  • Page 70

    Click the Modify in the entry you want to modify. If you want to delete the entry, click the Delete. Modify the information. Click the Save button. Click the Enable All button to make all entries enabled TL-MR3420 3G/3.75G Wireless N Router -63-...

  • Page 71: Upnp

    Play) in the screen (shown in Figure 4-42).The UPnP feature allows the devices, such as Internet computers, to access the local host resources or devices as needed. UPnP devices can be automatically discovered by the UPnP service application on the LAN. TL-MR3420 3G/3.75G Wireless N Router Figure 4-41 DMZ...

  • Page 72: Security

    There are four submenus under the Security menu as shown in Figure 4-43: Basic Security, Advanced Security, Local Management and Remote Management. Click any of them, and you will be able to configure the corresponding function. TL-MR3420 Figure 4-42 UPnP Setting -65-...

  • Page 73: Basic Security

    Protocol (PPP) to be tunneled through an IP network. To allow PPTP tunnels to pass through the Router, keep the default, Enabled. L2TP Passthrough - Layer 2 Tunneling Protocol (L2TP) is the method used to enable TL-MR3420 Figure 4-44 Basic Security -66-...

  • Page 74: Advanced Security

    Click the Save button to save your settings. 4.9.2 Advanced Security Choose menu “Security → Advanced Security”, you can protect the Router from being attacked by TCP-SYN Flood, UDP Flood and ICMP-Flood in the screen as shown in Figure 4-45. TL-MR3420 3G/3.75G Wireless N Router -67-...

  • Page 75

    TL-MR3420 3G/3.75G Wireless N Router Figure 4-45 Advanced Security Packets Statistics Interval (5~60) - The default value is 10. Select a value between 5 and 60 seconds from the drop-down list. The Packets Statistics Interval value indicates the time section of the packets statistics. The result of the statistics is used for analysis by SYN Flood, UDP Flood and ICMP-Flood.

  • Page 76: Local Management

    Choose menu “Security → Local Management”, you can configure the management rule in the screen as shown in Figure 4-46. The management feature allows you to deny computers in LAN from accessing the Router. TL-MR3420 Figure 4-46 Local Management -69-...

  • Page 77: Remote Management

    0.0.0.0. To enable this function change 0.0.0.0 to a valid IP address. If set to 255.255.255.255, then all the hosts can access the Router from internet. Note: To access the Router, you should type your Router's WAN IP address into your browser's TL-MR3420 Figure 4-47 Remote Management -70- 3G/3.75G Wireless N Router...

  • Page 78: Parental Control

    Schedule - The time period allowed for the PC controlled to access the Internet. For detailed information, please go to “Access Control → Schedule”. Modify - Here you can edit or delete an existing entry. TL-MR3420 3G/3.75G Wireless N Router -71-...

  • Page 79

    Click the Disable All button to disable all the rules in the list. Click the Delete All button to delete all the entries in the table. Click the Next button to go to the next page, or click the Previous button return to the previous page. TL-MR3420 3G/3.75G Wireless N Router -72-...

  • Page 80

    3. Click “Parental Control” menu on the left to go back to the Add or Modify Parental Control Entry page: Click Add New... button. Enter 00-11-22-33-44-AA in the MAC Address of Child PC field. Enter “Allow Google” in the Website Description field. Enter “www.google.com” in the Allowed Domain Name field. TL-MR3420 3G/3.75G Wireless N Router -73-...

  • Page 81: Access Control, Rule

    Target and Schedule. Click any of them, and you will be able to configure the corresponding function. 4.11.1 Rule Choose menu “Access Control → Rule”, you can view and set Access Control rules in the screen as shown in Figure 4-52. TL-MR3420 3G/3.75G Wireless N Router -74-...

  • Page 82

    3. Select a host from the Host drop-down list or choose “Click Here To Add New Host List”. 4. Select a target from the Target drop-sown list or choose “Click Here To Add New Target List”. TL-MR3420 3G/3.75G Wireless N Router -75-...

  • Page 83

    3. Click “Access Control → Schedule” in the left to enter the Schedule Settings page. Add a new entry with the Schedule Description is Schedule_1, Day is Sat and Sun, Start Time is 1800 and Stop Time is 2000. TL-MR3420 3G/3.75G Wireless N Router -76-...

  • Page 84: Host

    Modify - To modify or delete an existing entry. To add a new entry, please follow the steps below. Click the Add New… button. In the Mode field, select IP Address or MAC Address. TL-MR3420 Figure 4-54 Host Settings -77- 3G/3.75G Wireless N Router...

  • Page 85

    3. In Host Description field, create a unique description for the host (e.g. Host_1). 4. In MAC Address field, enter 00-11-22-33-44-AA. 5. Click Save to complete the settings. Then you will go back to the Host Settings page and see the following list. TL-MR3420 3G/3.75G Wireless N Router -78-...

  • Page 86: Target

    2) In Domain Name field, enter the domain name, either the full name or the keywords (for example google) in the blank. Any domain name with keywords in it (www.google.com, www.google.cn) will be blocked or allowed. You can enter 4 domain names. TL-MR3420 Figure 4-57 Target Settings -79- 3G/3.75G Wireless N Router...

  • Page 87

    1. Click Add New… button in Figure 4-57 to enter the Add or Modify an Access Target Entry page. 2. In Mode field, select Domain Name from the drop-down list. TL-MR3420 3G/3.75G Wireless N Router www.google.com only, you should first follow the...

  • Page 88: Schedule

    4. In Time field, you can select all day-24 hours or you may enter the Start Time and Stop Time in the corresponding field. 5. Click Save to complete the settings. Click the Delete All button to delete all the entries in the table. TL-MR3420 Figure 4-60 Schedule Settings -81- 3G/3.75G Wireless N Router...

  • Page 89: Static Routing

    TL-MR3420 3G/3.75G Wireless N Router Click the Next button to go to the next page, or click the Previous button return to the previous page. Figure 4-61 Advanced Schedule Settings For example: If you desire to restrict the internet activities of host with MAC address 00-11-22-33-44-AA to access www.google.com...

  • Page 90

    Select Enabled or Disabled for this entry on the Status pull-down list. Click the Save button to make the entry take effect. Other configurations for the entries: Click the Delete button to delete the entry. TL-MR3420 Figure 4-62 Static Routing -83- 3G/3.75G Wireless N Router...

  • Page 91: Bandwidth Control, Control Settings

    Line Type - Select the right type for you network connection. If you don’t know how to choose, please ask your ISP for the information. Egress Bandwidth - The upload speed through the WAN port Ingress Bandwidth - The download speed through the WAN port. TL-MR3420 3G/3.75G Wireless N Router -84-...

  • Page 92: Rules List

    To add/modify a Bandwidth Control rule, follow the steps below. Step 1: Click Add New… shown in Figure 4-66, you will see a new screen shown in Figure 4-67. Step 2: Enter the information like the screen shown below. TL-MR3420 3G/3.75G Wireless N Router -85-...

  • Page 93: Ip & Mac Binding Setting, Binding Setting

    When you want to add or modify an IP & MAC Binding entry, you can click the Add New button or Modify button, and then you will go to the next page. This page is used for adding or modifying an IP & MAC Binding entry (shown in Figure 4-70). TL-MR3420 Figure 4-69 Binding Setting -86-...

  • Page 94

    Click the Find button in the page as shown in Figure 4-71. Figure 4-71 Find IP & MAC Binding Entry Click the Enable All button to make all entries enabled. Click the Delete All button to delete all entries. TL-MR3420 3G/3.75G Wireless N Router -87-...

  • Page 95: Dynamic Dns, Arp List

    IP & MAC Binding list. 4.15 Dynamic DNS Choose menu “Dynamic DNS”, and you can configure the Dynamic DNS function. The Router offers the DDNS (Dynamic Domain Name System) feature, which allows the hosting TL-MR3420 3G/3.75G Wireless N Router Figure 4-72 ARP List -88-...

  • Page 96: Comexe.cn Ddns

    Type the Domain Name received from your dynamic DNS service provider. Type the User Name for your DDNS account. Type the Password for your DDNS account. Click the Login button to log in to the DDNS service. TL-MR3420 3G/3.75G Wireless N Router -89-...

  • Page 97: Dyndns.org Ddns, No-ip.com Ddns

    Connection Status -The status of the DDNS service connection is displayed here. Click Logout to logout of the DDNS service. 4.15.3 No-ip.com DDNS If the dynamic DNS Service Provider you select is www.no-ip.com, the page will appear as shown in Figure 4-75. TL-MR3420 3G/3.75G Wireless N Router -90-...

  • Page 98: System Tools

    Connection Status - The status of the DDNS service connection is displayed here. Click Logout to log out the DDNS service. 4.16 System Tools Figure 4-76 The System Tools menu Choose menu “System Tools”, and you can see the submenus under the main menu: Time TL-MR3420 3G/3.75G Wireless N Router -91-...

  • Page 99: Time Setting

    Click the Get GMT button to get system time from Internet if you have connected to the Internet. Note: This setting will be used for some time-based functions such as firewall. You must specify TL-MR3420 Figure 4-77 Time settings -92- 3G/3.75G Wireless N Router...

  • Page 100: Diagnostic

    You can use ping/traceroute to test both numeric IP address or domain name. If pinging/tracerouting the IP address is successful, but pinging/tracerouting the domain name is not, you might have a name resolution problem. In this case, ensure that the domain name TL-MR3420 Figure 4-78 Diagnostic Tools -93-...

  • Page 101: Firmware Upgrade

    Timeout” are used for Ping function. Option “Tracert Hops” are used for Tracert function. 4.16.3 Firmware Upgrade Choose menu “System Tools → Firmware Upgrade”, you can update the latest version of firmware for the Router on the following screen. TL-MR3420 Figure 4-79 Diagnostic Results -94- 3G/3.75G Wireless N Router...

  • Page 102: Factory Defaults

    4) The Router will reboot after the upgrading has been finished. 4.16.4 Factory Defaults Choose menu “System Tools → Factory Defaults”, and you can restore the configurations of the Router to factory defaults on the following screen TL-MR3420 Figure 4-80 Firmware Upgrade firmware upgrade...

  • Page 103: Backup & Restore

    The current configuration will be covered by the uploading configuration file. The upgrade process lasts for 20 seconds and the Router will restart automatically. Keep the Router on during the upgrading process to prevent any damage. TL-MR3420 3G/3.75G Wireless N Router -96-...

  • Page 104: Reboot, Password

    4.16.7 Password Choose menu “System Tools → Password”, you can change the factory default user name and password of the Router in the next screen as shown in Figure 4-84. TL-MR3420 Figure 4-83 Reboot the Router -97- 3G/3.75G Wireless N Router...

  • Page 105: System Log

    Auto Mail Feature - Indicates whether auto mail feature is enabled or not. Mail Settings - Set the receiving and sending mailbox address, server address, validation information as well as the timetable for Auto Mail Feature, as shown in Figure 4-86. TL-MR3420 3G/3.75G Wireless N Router Figure 4-84 Password...

  • Page 106

    Figure 4-86 Click Save to keep your settings. Click Back to return to the previous page. Log Type - By selecting the log type, only logs of this type will be shown. TL-MR3420 3G/3.75G Wireless N Router -99-...

  • Page 107: Statistics

    Sorted Rules - Choose how displayed statistics are sorted. Select the Auto-refresh checkbox to refresh automatically. Click the Refresh button to refresh immediately. Click Reset All to reset the values of all the entries to zero. TL-MR3420 3G/3.75G Wireless N Router Figure 4-87 Statistics -100-...

  • Page 108

    Reset the value of he entry to zero. Modify Delete the existing entry in the table. Delete There would be 5 entries on each page. Click Previous to return to the previous page and Next to the next page. TL-MR3420 3G/3.75G Wireless N Router -101-...

  • Page 109: Appendix A: Faq

    If you are a Cable user, please configure the Router following the above steps. How do I configure the Router to access Internet by Ethernet users? Login to the Router, click the “Network” menu on the left of your browser, and click TL-MR3420 3G/3.75G Wireless N Router -102-...

  • Page 110

    Add New…. Then on the “Add or Modify a Virtual Server Entry” page, enter “1720” for the “Service Port” blank, and your IP address for the “IP Address” blank, taking 192.168.1.169 for an example, remember to Enable and Save. TL-MR3420 Figure A-3 MAC Clone Figure A-4 Virtual Servers -103- 3G/3.75G Wireless N Router...

  • Page 111

    How to enable h423 ALG: Log in to the Router, click the “Security” menu on the left of your browser, and click “Basic Security” submenu. On the “Basic Security” page, check the Enable radio button next to h423 ALG. Remember to click the Save button. TL-MR3420 3G/3.75G Wireless N Router Figure A-6 DMZ...

  • Page 112

    If the above configuration takes effect, to configure to the Router by typing http://192.168.1.1:88 (the Router’s LAN IP address: Web Management Port) in the address field of the Web browser. TL-MR3420 Figure A-7 Basic Security Figure A-8 Remote Management -105-...

  • Page 113

    Figure A-10 Add or Modify a Virtual server Entry The wireless stations cannot connect to the Router. Make sure the "Wireless Router Radio" is enabled. Make sure that the wireless stations' SSID accord with the Router's SSID. Make sure the wireless stations have right KEY for encryption when the Router is encrypted.

  • Page 114: Appendix B: Configuring The Pcs

    Connections tab in the appearing window. Right click the icon that showed below, select Properties on the prompt page. In the prompt page that showed below, double click on the Internet Protocol (TCP/IP). TL-MR3420 3G/3.75G Wireless N Router Figure B-1...

  • Page 115

    Now you have two ways to configure the TCP/IP protocol below: Setting IP address automatically Select Obtain an IP address automatically, Choose Obtain DNS server automatically, as shown in the Figure below: TL-MR3420 3G/3.75G Wireless N Router Figure B-2 -108-...

  • Page 116

    Type the Router’s LAN IP address (the default IP is 192.168.1.1) into the Default gateway field. Select Use the following DNS server addresses radio button. In the Preferred DNS Server field you can type the DNS server IP address, which has been provided by your ISP TL-MR3420 3G/3.75G Wireless N Router Figure B-3 -109-...

  • Page 117

    TL-MR3420 3G/3.75G Wireless N Router Figure B-4 Now click OK to keep your settings. -110-...

  • Page 118: Appendix C: Specifications

    Environmental and Physical Operating : 0℃~40℃ (32 ~104 Temperature. Storage: -40℃~70℃(-40℉~158℉) Operating: 10% ~ 90% RH, Non-condensing Humidity Storage: 5% ~ 90% RH, Non-condensing TL-MR3420 3G/3.75G Wireless N Router EIA/TIA-568 100Ω STP (maximum 100m) EIA/TIA-568 100Ω STP (maximum 100m) ℉ ℉) -111-...

  • Page 119: Appendix D: Glossary

    TL-MR3420 3G/3.75G Wireless N Router Appendix D: Glossary 802.11n - 802.11n builds upon previous 802.11 standards by adding MIMO (multiple-input multiple-output). MIMO uses multiple transmitter and receiver antennas to allow for increased data throughput via spatial multiplexing and increased range by exploiting the spatial diversity, perhaps through coding schemes like Alamouti coding.

  • Page 120

    TL-MR3420 3G/3.75G Wireless N Router connection. SSID - A Service Set Identification is a thirty-two character (maximum) alphanumeric key identifying a wireless local area network. For the wireless devices in a network to communicate with each other, all devices must be configured with the same SSID. This is typically the configuration parameter for a wireless PC card.

  • Page 121: Appendix E: Compatible 3g/3.75g Usb Modem

    EC169, E156, E156C, E156B, E156G, E169, E180, E220, E226, E270, E272, E1756, E1550, E1762, K3565, EC122, EC1260, EC1261 MF100, MF102, MF626, MF627, MF637U, MF645, AC581, AC2736, AC581, MU351 U760 NOVATEL NOKIA CS-10 ONDA MSA501HS X060S, X070S ALCATEL 4G SYSTEM XSStick W12 U1-TF SAMSUNG SGH-h228 TL-MR3420 3G/3.75G Wireless N Router -114-...

  • www.manualslib.com

    Unbricking a TP-Link TL-MR3420 Wireless Router

    I have a TP-Link TL-MR3420 that stopped working after I reload OpenWrt on it, and nothing that I tried worked:– no ping response on the LAN port (I tried several known IP numbers that OpenWrt use)– there is ping reply on the WAN port, but neither telnet nor ssh works– failsafe mode did not work

    So, the last resort is to hook to the serial port, and use the tftp function of the bootloader to reload with stock firmware .

    The screws to open the box are under the rubber pads, and the solder pads for the serial port is marked with SJ1, on the right hand side.

    Here is the picture of the board:

    The picture shows 3 pins that I’ve soldered on the board. Here is a close-up of the pins:

    From left to right: TX, RX, and GND. Note that there is another unused pad to the right of GND which is VCC (3.3v).

    Please note that as the signal is TTL level, you need some sort of either level converter (such as MAX2323 chip), or connect to the output of an USB to Serial chip (such as Prolific PL-2302 chip), just before the signal goes to a Max232 type chip then to the DB9 port. See this article.I used the second option.

    After I plug the USB-Serial adapter, then thru Device Manager I can see the COM port number the device is assigned.

    Now open Putty, select Serial, type in the COM number and use 115,200 bps as the serial speed. Then a blank screen pops up.

    After I plug the power to the router then I got scrolling messages on the screen, confirming that my serial port hookup is working good :

    But then the booting process stopped at the following error messages:

    Looks like this is the reason why the router won’t work properly.

    Reload thru TFTP

    Here are the steps to reload:1. Download the stock (original) firmware from TP-Link website and rename to code.bin2. Download TFTPgui to act as the TFTP server on my windows 7 laptop3. Plug an Ethernet cable on the LAN port, and the other side to the laptop.4. Set the laptop as 192.168.1.275. Launch the TFTPgui software and set the work folder to the folder where the code.bin stored.7. Plug the router, and as you see “Autobooting in 1 seconds” you have to type “tpl” quickly (no need to press enter)Note: practice so you can type quickly and you might need to power-cycle to retry several times before you got it right .When I almost give up in typing tpl at the right moment, I got it right and the boot process stop with “ar7240>” prompt:

    8. Continue with 4 lines of commands to erase, download stock firmware, reflash, and reboot , as mentioned on the OpenWrt wiki on MR3420

    Note that for several minutes my tftp process showed several T T T on the screen which means Timeout:

    So I double-checked the laptop’s IP number, check the ethernet cable, tried to ping the router (192.168.1.10), but all failed to resolve the timeout problem .Note that the lack of ping reply from the router put me in circles, but actually this is correct as the router is in boot loader thus very minimal tcp/ip stack.

    Then I realized this might be a firewall issue as the tftp call is initiated from the router (external) coming into the laptop.

    So I disabled the Windows 7 firewall:

    As soon as the firewall is disabled, the transfer starts and completed successfully:

    TFTPgui also confirms tha the transfer has been completed:

    Boot with Stock FirmwareAfter the router reboots with the stock firmware, the serial port screen shows a completed boot process that ends with a login prompt:

    And, using a web browser to 192.168.1.1 shows the original menu of a TP-Link TL-MR3420 router :

    So, success ! My unbricking is complete.

    Thanks for reading.

    .

    .

    .

    .

    .

    .

    below is ads, I am not responsible

    .

    .

    Like this:

    Like Loading...

    Related

    Tags: mr3420, serial, Tftp, tftpgui

    This entry was posted on August 7, 2013 at 11:19 am and is filed under computer, Hacking. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

    yd0nxx.wordpress.com


    Смотрите также