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User Manual
RT-N12 C1
SuperSpeed Wireless N Router
RT-N12
Super Speed Wireless N Router
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2
Copyright © 2011 ASUSTeK Computer Inc. All Rights Reserved.
No part of this manual, including the products and software described in it, may be
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any
language in any form or by any means, except documentation kept by the purchaser for
backup purposes, without the express written permission of ASUSTeK Computer Inc.
(“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modied or
altered, unless such repair, modication of alteration is authorized in writing by ASUS; or (2)
the serial number of the product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES
OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE
LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
(INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE
OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR
ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED
FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME
WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY
ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR
INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS
AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered
trademarks or copyrights of their respective companies, and are used only for identication or
explanation and to the owners’ benet, without intent to infringe.
E6979
First Edition V1
Nov. 2011
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Table of contents
About this guide .................................................................................... 4
Chapter 1: Knowing your wireless router
Package contents .................................................................................. 7
System requirements
............................................................................ 7
Before you proceed
............................................................................... 7
Hardware features
................................................................................. 8
Top panel
........................................................................................... 8
Rear panel
......................................................................................... 9
Bottom panel
................................................................................... 10
Chapter 2: Getting started
Setting up the wireless router .............................................................11
Using the Quick Internet Setup (QIS)
..................................................11
Setting up the wireless router in Router mode
................................ 12
Setting up the wireless router in Repeater mode ............................ 15
Setting up the wireless router in AP mode
...................................... 17
Chapter 3: Conguring the network clients
Accessing the wireless router ............................................................ 19
Setting an IP address for wired or wireless clients
.......................... 19
Chapter 4: Conguring via the web GUI
Conguring via the web GUI ............................................................... 27
Using the Network Map
....................................................................... 29
Creating multiple SSID proles
....................................................... 30
Managing bandwidth with EzQoS
...................................................... 31
Upgrading the rmware
...................................................................... 32
Restoring/Saving/Uploading settings
................................................ 33
Chapter 5: Installing the utilities
Installing the utilities ........................................................................... 35
Device Discovery
................................................................................. 37
Firmware Restoration
.......................................................................... 38
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Table of contents
About this guide
This user guide contains information that you need to install and congure the
ASUS Wireless Router.
How this guide is organized
This guide contains the following parts:
• Chapter 1: Knowing your wireless router
This chapter provides information on the package contents, system
requirements, hardware features, and LED indicators of the ASUS Wireless
Router.
• Chapter 2: Getting started
This chapter provides instructions on setting up the Router, Repeater, and
Access Point modes of the ASUS Wireless Router.
• Chapter 3: Conguring the network clients
This chapter provides instructions on setting up the clients in your network to
work with your ASUS Wireless Router.
• Chapter 4: Conguring via the web GUI
This chapter provides instructions on conguring the ASUS Wireless Router
using its web graphics user interface (web GUI).
• Chapter 5: Installing the utilities
This chapter provides information on the utilities that are available from the
support CD.
Chapter 6: TroubleshootinTroubleshooting
Troubleshooting ................................................................................... 39
ASUS DDNS Service
............................................................................ 42
Frequently Asked Questions (FAQs)
............................................... 42
Appendices
Notices .................................................................................................. 45
ASUS Contact information
.................................................................. 53
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• Chapter 6: Troubleshooting
This chapter provides you with a troubleshooting guide for solving common
problems you may encounter when using the ASUS Wireless Router.
• Appendices
This chapter provides you with the regulatory Notices and Safety Statements.
Conventions used in this guide
WARNING: Information to prevent injury to yourself when trying to
complete a task.
CAUTION: Information to prevent damage to the components when
trying to complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to aid in completing a task.
6
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Chapter 1: Knowing your wireless router RT-N12 C1
1
Knowing your
wireless router
Package contents
Check the following items in your ASUS Wireless Router package.
RT-N12 C1 Wireless Router x1
Power adapter x1
Support CD (manual, utilities) x1
RJ45 cable x1
Detachable antenna x2
Quick Start Guide x1
Note: If any of the items is damaged or missing, contact your retailer.
System requirements
Before installing the ASUS Wireless Router, ensure that your system/network
meets the following requirements:
• An Ethernet RJ-45 port (10Base-T/100Base-TX)
• At least one IEEE 802.11b/g/n device with wireless capability
• An installed TCP/IP and Internet browser
Before you proceed
Take note of the following guidelines before installing the ASUS Wireless Router:
• The length of the Ethernet cable that connects the device to the network (hub,
ADSL/cable modem, router, wall patch) must not exceed 100 meters.
• Place the device on a at and stable surface as far from the ground as
possible.
• Keep the device clear from metal obstructions and away from direct sunlight.
• Keep the device away from transformers, heavy-duty motors, uorescent lights,
microwave ovens, refrigerators, and other industrial equipment to prevent
signal loss.
• Install the device in a central area to provide ideal coverage for all wireless
mobile devices.
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RT-N12 C1 Chapter 1: Knowing your wireless router
Status indicators
LED Status Indication
(Power)
Off No power or wireless signal is disabled
On System ready
Flashing-slow Rescue mode
Flashing-quick WPS processing
(Wireless)
Off No power
On Wireless system ready
Flashing Transmitting or receiving data (wireless)
LAN 1-4
(Local Area
Network)
Off No power or no physical connection
On Has physical connection to an Ethernet
network
Flashing Transmitting or receiving data (through
Ethernet cable)
WAN (Wide
Area Network)
Off No power or no physical connection
On Has physical connection to an Ethernet
network
Flashing Transmitting or receiving data (through
Ethernet cable)
• Install the device at least 20cm from a person to insure that the product is
operated in accordance with the RF Guidelines for Human Exposure adopted
by the Federal Communications Commission.
Hardware features
Top panel
RT-N12
Super Speed Wireless N Router
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Chapter 1: Knowing your wireless router RT-N12 C1
Rear panel
Label Description
WAN
Connect an RJ-45 Ethernet cable to this port to establish
WAN connection.
LAN1-LAN4
Connect RJ-45 Ethernet cables to these ports to establish
LAN connection.
DC IN Insert the AC adapter into this port to connect your router
to a power source.
WPS Press this button to establish wireless connection.
Restore Press this button for more than ve seconds to restore the
system to its factory default settings.
Item Description
Operation
mode
selector
Use this selector to choose an operation mode:
Router (IP Sharing mode): In the Router mode, the wireless
router connects to the Internet via PPPoE, Automatic IP, PPTP,
L2TP, or Static IP, and provides you with wireless radio signals.
The NAT, rewall, and IP sharing services for LAN clients are
enabled.
Repeater: In this mode, the wireless router extends your wireless
network coverage and provides you with higher quality wireless
radio signals. The NAT, rewall, and IP sharing services are
disabled.
Access Point (AP): In this mode, the wireless router receives
the WAN IP address from the router connected to the WAN port
and provides you with wireless radio signals. The NAT, rewall,
and IP sharing services are disabled.
ROUTER
AP
REPEATER
Operation mode
selector
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RT-N12 C1 Chapter 1: Knowing your wireless router
Bottom panel
2
1
Item Description
1
Mounting hooks
Use the mounting hooks to mount your router on concrete or
wooden surfaces using two round head screws.
2
Air vents
These vents provide ventilation to your router.
Note: Mounting to the wall is not recommended as it reduces the wireless performance.
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Chapter 2: Setting up the hardware RT-N12 C1
2
Getting started
Setting up the wireless router
The ASUS Wireless Router includes a web graphics user interface (web GUI)
that allows you to congure the wireless router using your web browser on your
computer.
You can set up the wireless router in any of these three operation modes: Router
(IP Sharing), Repeater, and Access Point (AP). Set up the wireless router in the
Router (IP Sharing) and Repeater modes via the Quick Internet Setup (QIS), and
the AP mode via the web GUI.
Note: For details on conguring your wireless router using the web GUI, refer to Chapter 4:
Conguring via the web GUI.
Note: To set up the wireless router in the AP mode, use Device Discovery included in the
support CD to access the web GUI.
Using the Quick Internet Setup (QIS)
The Quick Internet Setup (QIS) function, which is integrated in the wireless router’s
web GUI, detects the Internet connection type automatically and guides you in
setting up your network quickly.
The QIS web page appears automatically after you connected all your devices and
launched your web browser. You may also launch the QIS from the Network Map
page in the web GUI. To do this, click Go in the QIS eld under Internet status.
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RT-N12 C1 Chapter 2: Setting up the hardware
Modem
RT-N12 C1
Client
ROUTER
AP
REPEATER
2. Connect your devices.
Setting up the wireless router in Router mode
In the Router mode, the wireless router connects to the Internet via PPPoE,
Automatic IP, PPTP, L2TP, or Static IP, and provides you with wireless radio
signals. The NAT, rewall, and IP sharing services for LAN clients are enabled.
To set up the wireless router in Router mode:
1. Choose the Router mode.
Router AP
Repeater
RT-N12 C1
ROUTER
AP
REPEATER
Note: We recommend that you use an Ethernet cable (wired connection) to connect your
computer to the wireless router for initial conguration to avoid possible setup problems due to
wireless uncertainty.
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Chapter 2: Setting up the hardware RT-N12 C1
3. Launch your web browser and the QIS starts to detect your Internet connection
type.
Note: If the QIS web page does not appear after you launched your web browser, disable the
proxy settings on your web browser.
4. Key in the user name and password. Click Apply all settings.
Note:
• The PPPoE Internet connection type is used in this setup case. The setup screen varies with
different Internet connection types.
• Obtain the required information such as the username and password from your Internet
Service Provider (ISP).
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RT-N12 C1 Chapter 2: Setting up the hardware
5. The Internet connection setup is completed.
• Click Going to Internet to surf the Internet.
• Click Advanced Setting page to manually congure advanced settings for
the wireless router.
• Click Add to Favorites to add this URL to your Favorites list for quick
access to the web GUI.
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Chapter 2: Setting up the hardware RT-N12 C1
Setting up the wireless router in Repeater mode
In the Repeater mode, the wireless router extends your wireless network coverage
and provides you with higher quality wireless radio signals. The NAT, rewall, and
IP sharing services are disabled.
To set up the wireless router in Repeater mode:
1. Choose the Repeater mode.
RT-N12 C1
Router AP
Repeater
ROUTER
AP
REPEATER
2. Connect your devices.
RT-N12 C1
Client
Modem
Wireless Router
ROUTER
AP
REPEATER
Note: We recommend that you use an Ethernet cable (wired connection) to connect your
computer to the wireless router for initial conguration to avoid possible setup problems due to
wireless uncertainty.
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RT-N12 C1 Chapter 2: Setting up the hardware
3. Launch your web browser and the QIS web page appears automatically. Select
the AP whose wireless signal you want to extend, then click Connect.
Note: If the QIS web page does not appear after you launched your web browser, disable the
proxy settings on your web browser.
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Chapter 2: Setting up the hardware RT-N12 C1
Setting up the wireless router in AP mode
RT-N12 C1
Router AP
Repeater
ROUTER
AP
REPEATER
In the AP mode, the wireless router receives the WAN IP address from the router
connected to the WAN port and provides you with wireless radio signals. The NAT,
rewall, and IP sharing services are disabled.
To set up the wireless router in AP mode:
1. Choose the AP mode.
Note: To set up the wireless router in the AP mode, use Device Discovery included in the
support CD to access the web GUI.
2. Connect your devices.
Modem
RT-N12 C1
Client
Router
ROUTER
AP
REPEATER
Note: We recommend that you use an Ethernet cable (wired connection) to connect your
computer to the wireless router for initial conguration to avoid possible setup problems due to
wireless uncertainty.
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RT-N12 C1 Chapter 2: Setting up the hardware
5. From the main page, click the navigation menu or links to congure the various
features of the wireless router.
3. Launch the Device Discovery utility and click Congure to access the web
GUI.
4. On the login page, key in the default user name (admin) and password
(admin).
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Chapter 3: Conguring the clients RT-N12 C1
3
Conguring the
network clients
Accessing the wireless router
Setting an IP address for wired or wireless clients
To access the ASUS Wireless Router, you must have the correct TCP/IP settings
on your wired or wireless clients. Ensure that the clients’ IP addresses are within
the same subnet as the ASUS Wireless Router.
By default, the ASUS Wireless Router integrates the DHCP server function, which
automatically assigns IP addresses to the clients in your network.
But in some instances, you may want to manually assign static IP addresses on
some of the clients or computers in your network rather than automatically getting
IP addresses from your wireless router.
Follow the instructions below that correspond to the operating system installed on
your client or computer.
Note: In the Router mode, if you want to manually assign an IP address to your client, we
recommend that you use the following settings:
• IP address: 192.168.1.xxx (xxx can be any number between 2 and 254. Ensure that the IP
address is not used by another device)
• Subnet Mask: 255.255.255.0 (same as the ASUS Wireless Router)
• Gateway: 192.168.1.1 (IP address of the ASUS Wireless Router)
• DNS: 192.168.1.1 (ASUS Wireless Router) or assign a known DNS server in your network
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RT-N12 C1 Chapter 3: Conguring the clients
Windows® 9x/ME
1. Click Start > Control Panel >
Network to display the Network
setup window.
2. Select TCP/IP then click
Properties.
3. If you want your computer to
automatically obtain an IP address,
click Obtain an IP address
automatically then click OK.
Otherwise, click Specify an
IP address, then key in the IP
address and Subnet Mask.
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4. Select the Gateway tab, and key in
New gateway then click Add.
5. Select the DNS conguration tab
and click Enable DNS. Key in Host,
Domain, and DNS Server Search
Order, then click Add.
6. Click OK.
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RT-N12 C1 Chapter 3: Conguring the clients
Windows® NT4.0
1. Go to Control Panel > Network to
display the Network setup window
then select the Protocols tab.
2. Select TCP/IP Protocol from the
Network Protocols list then click
Properties.
3. From the IP Address tab of the
Microsoft TCP/IP Properties
window, you can:
• Select the type of network
adapter installed in your
system.
• Set the router to assign IP
address automatically.
• Manually set up the IP address,
subnet mask, and default
gateway.
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Chapter 3: Conguring the clients RT-N12 C1
4. Select the DNS tab then click Add
under the DNS Service Search
Order and key in DNS.
Windows® 2000
1. Click Start > Control Panel >
Network and Dial-up Connection.
Right-click Local Area Connection
then click Properties.
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RT-N12 C1 Chapter 3: Conguring the clients
2. Select Internet Protocol (TCP/IP),
then click Properties.
3. Select Obtain an IP address
automatically if you want
the IP settings to be assigned
automatically. Otherwise, select
Use the following IP address: and
key in IP address, Subnet mask,
and Default gateway.
4. Select Obtain DNS server
address automatically if you
want the DNS server settings to be
assigned automatically. Otherwise,
select Use the following DNS
server addresses: and key in the
Preferred and Alternate DNS
server.
5. Click OK when done.
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Chapter 3: Conguring the clients RT-N12 C1
2. Select Internet Protocol (TCP/IP),
then click Properties.
3. Select Obtain an IP address
automatically if you want
the IP settings to be assigned
automatically. Otherwise, select
Use the following IP address: and
key in IP address, Subnet mask,
and Default gateway.
4. Select Obtain DNS server
address automatically if you
want the DNS server settings to be
assigned automatically. Otherwise,
select Use the following DNS
server addresses: and key in the
Preferred and Alternate DNS
server.
5. Click OK when done.
Windows® XP
1. Click Start > Control Panel >
Network Connection. Right-click
Local Area Connection then select
Properties.
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Windows® Vista
1. Go to Start > Control Panel >
Network and Internet > Network
and Sharing Center. Click View
status > Properties > Continue.
2. Select Internet Protocol
Version 4 (TCP/IPv4), then click
Properties.
3. Select Obtain an IP address
automatically if you want
the IP settings to be assigned
automatically. Otherwise, select
Use the following IP address:
and key in IP address and
Subnet mask.
4. Select Obtain DNS server
address automatically if you
want the DNS server settings
to be assigned automatically.
Otherwise, select Use the
following DNS server
addresses: and key in the
Preferred and Alternate DNS
server.
5. Click OK when done.
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Chapter 4: Conguring via the web GUI RT-N12 C1
4
Conguring via
the web GUI
Conguring via the web GUI
The router’s web graphics user interface (web GUI) allows you to congure these
features: Network Map and EZQoS Bandwidth Management.
To access the web GUI:
1. Launch a web browser, then key in the router’s IP address. The login page of
the router’s web GUI appears.
2. On the login page, key in the default user name (admin) and password
(admin).
Note:
• In the Router mode, the router’s IP address is 192.168.1.1.
• In the Repeater and AP modes, use Device Discovery included in the support CD to nd the
router’s IP address.
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RT-N12 C1 Chapter 4: Conguring via the web GUI
3. From the main page, click the navigation menu or links to congure the various
features of the ASUS Wireless Router.
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Chapter 4: Conguring via the web GUI RT-N12 C1
Using the Network Map
Network Map allows you to view the status and congure the connection settings
of the Internet, system, and clients in your network. It enables you to quickly set up
your Wide Area Network (WAN) using the Quick Internet Setup (QIS) feature.
To view the status or congure the settings, click any of these icons displayed on
the main page:
Icon Description
Internet status
Click this icon to display information on the Internet
connection status, WAN IP address, DNS, connection type,
and gateway address. From the Internet status screen, use
the Quick Internet Setup (QIS) feature to quickly set up your
network.
System status
Click this icon to display information on the SSID,
authentication and encryption methods, LAN IP, MAC
address, or turn the wireless radio on/off. Enable the WPS
mode from the System status screen.
Client status
Click this icon to display information about the clients or
computers in the network, and allows you to block/unblock
a client.
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RT-N12 C1 Chapter 4: Conguring via the web GUI
Creating multiple SSID proles
The wireless router allows you to create multiple SSID proles that meet various
working scenarios.
To create an SSID prole:
1. Under System status, click Add.
2. Congure the prole settings, then click Add.
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Chapter 4: Conguring via the web GUI RT-N12 C1
Managing bandwidth with EzQoS
EzQoS Bandwidth Management enables you to set the bandwidth priority and
manage the network trafc.
To set up the bandwidth priority:
1. Click EzQoS Bandwidth Management from the navigation menu at the left
side of your screen.
2. Click each of these four applications to set the bandwidth priority:
Icon Description
Gaming Blaster
The router handles gaming trafc at rst priority.
Internet Application
The router handles the e-mail, web browsing and other Internet
applications trafc at rst priority.
FTP
The router handles at rst priority the trafc of downloading/
uploading data to/from the FTP server.
Voip/Video Streaming
The router handles the audio/video trafc at rst priority.
3. Click Save to save the conguration settings.
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RT-N12 C1 Chapter 4: Conguring via the web GUI
Upgrading the rmware
Note: Download the latest rmware from the ASUS website at http://www.asus.com.
To upgrade the rmware:
1. Click Advanced Setting from the navigation menu at the left side of your
screen.
2. Under the Administration menu, click Firmware Upgrade.
3. In the New Firmware File eld, click Browse to locate the new rmware on your
computer.
4. Click Upload. The uploading process takes about three minutes.
Note: If the upgrade process fails, use the Firmware Restoration utility to restore the system. For
details on this utility, refer to the section Firmware Restoration in Chapter 5 of this user manual.
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Chapter 4: Conguring via the web GUI RT-N12 C1
Restoring/Saving/Uploading settings
To restore/save/upload the settings:
1. Click Advanced Setting from the navigation menu at the left side of your
screen.
2. Under the Administration menu, click Restore/Save/Upload Setting.
3. Select the tasks that you want to do:
• To restore to the default factory settings, click Restore, and click OK in the
conrmation message.
• To save the current system settings, click Save, and click Save in the le
download window to save the system le in your preferred path.
• To restore previous system settings, click Browse to locate the system le that
you want to restore, then click Upload.
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RT-N12 C1 Chapter 4: Conguring via the web GUI
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Chapter 5: Installing the utilities RT-N12 C1
5
Installing the
utilities
2. Click Next.
Installing the utilities
The support CD contains the utilities for conguring the ASUS Wireless Router.
To install the ASUS WLAN Utilities in Microsoft
®
Windows, insert the support CD
in the CD drive. If Autorun is disabled, run setup.exe from the root directory of the
support CD.
To install the utilities:
1. Click Install...Utilities.
Note: When you install the utilities, the setup wizard automatically detects your computer’s
operating system. If you are using Windows® 7 / Vista OS, click Install on the conrmation
message.
c
C1
C1
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RT-N12 C1 Chapter 5: Installing the utilities
3. Click Next to accept the default
destination folder or click Browse to
specify another path.
4. Click Next to accept the default
program folder or enter another
name.
5. Click Finish when setup is
completed.
C1
C1
C
C
C
C
C
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Chapter 5: Installing the utilities RT-N12 C1
Device Discovery
Device Discovery is an ASUS WLAN utility that detects an ASUS wireless router
and enables you to congure the device.
To launch the Device Discovery utility:
From your computer’s desktop, click Start > All Programs > ASUS Utility >
RT-N12 C1 Wireless Router > Device Discovery.
• Click Congure to access the web GUI and congure the wireless router.
• Click Search to search for ASUS wireless routers within range.
• Click Exit to exit the application.
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RT-N12 C1 Chapter 5: Installing the utilities
Firmware Restoration
Firmware Restoration is used on an ASUS Wireless Router that failed during its
rmware upgrading process. It uploads the rmware that you specify.
The process
takes about three to four minutes.
To launch the rescue mode and use the Firmware Restoration utility:
1. Unplug the wireless router from the power source.
2. Hold the Restore button at the rear panel and simultaneously re-plug the
wireless router into the power source. Release the Restore button when the
Power LED at the front panel ashes slowly, which indicates that the wireless
router is in the rescue mode.
3. From your computer’s desktop, click Start > All Programs > ASUS Utility >
RT-N12 C1 Wireless Router > Firmware Restoration.
Important: Launch the rescue mode before using the Firmware Restoration utility.
Note: This is not a rmware upgrade utility and cannot be used on a working ASUS Wireless
Router. Normal rmware upgrades must be done through the web interface. Refer to
Chapter 4: Conguring via the web GUI for more details.
4. Specify a rmware le, then click Upload.
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Chapter 6: Troubleshooting RT-N12 C1
6
Troubleshooting
Troubleshooting
This troubleshooting guide provides solutions to some common problems that
you may encounter while installing or using the ASUS Wireless Router. These
problems require simple troubleshooting that you can perform by yourself. Contact
the ASUS Technical Support if you encounter problems not mentioned in this
chapter.
Problem Action
I cannot access the web GUI
for conguring the router.
1. Launch a web browser, then click Tools >
Internet Options...
2. Under Temporary Internet les, click
Delete Cookies... and Delete Files...
3. Disable the proxy settings of the web
browser.
The client cannot establish a
wireless connection with the
router.
Out of Range:
• Put the router closer to the wireless client.
• Try to change the channel settings.
Authentication:
• Use wired connection to connect to the
router.
• Check the wireless security settings.
• Press the Restore button at the rear panel
for more than ve seconds.
Cannot nd the router:
• Press the Restore button at the rear panel
for more than ve seconds.
• Check the setting in the wireless adapter
such as SSID and encryption settings.
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RT-N12 C1 Chapter 6: Troubleshooting
Problem Action
Cannot access the Internet
via wireless LAN adapter.
• Move the router closer to the wireless client.
• Check whether the wireless adapter is
connected to the correct wireless router.
• Check whether the wireless channel in use
conforms to the channels available in your
country/area.
• Check the encryption settings.
• Check if the ADSL or Cable connection is
correct.
• Retry using another Ethernet cable.
Internet is not accessible. • Check the status indicators on the ADSL
modem and the wireless router.
• Check if the WAN LED on the wireless
router is ON. If the LED is not ON, change
the cable and try again.
When ADSL Modem “Link”
light is ON (not blinking), this
means Internet Access is
possible.
• Restart your computer.
• Refer to the Quick Start Guide of the
wireless router and re-congure the settings.
• Check if the WAN LED on the wireless
router is ON.
• Check the wireless encryption settings.
• Check if the computer can get the IP
address (via both wired network and
wireless network).
• Ensure that your web browser is congured
to use the local LAN, and is not congured
to use a proxy server.
If the ADSL “LINK” light blinks
continuously or stays off,
Internet access is not possible
- the Router is unable to
establish a connection with
the ADSL network.
• Ensure that all your cables are all properly
connected .
• Disconnect the power cord from the ADSL
or cable modem, wait a few minutes, then
reconnect the cord.
• If the ADSL light continues to blink or stays
OFF, contact your ADSL service provider.
Network name or encryption
keys are forgotten.
• Try setting up the wired connection and
conguring the wireless encryption again.
• Press the Restore button at the rear panel
of the wireless router for more than ve
seconds.
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Chapter 6: Troubleshooting RT-N12 C1
Problem Action
How to restore the system to
its default settings?
• Press the Restore button at the rear panel
of the wireless router for more than ve
seconds.
• Refer to the section Restoring/Saving/
Uploading settings
in Chapter 4 of this
user manual.
The following are the factory default settings:
User Name: admin
Password: admin
Enable DHCP: Yes (if WAN cable is plugged in)
IP address:
192.168.1.1
Domain Name: (Blank)
Subnet Mask:
255.255.255.0
DNS Server 1: 192.168.1.1
DNS Server 2: (Blank)
SSID: ASUS
I cannot use 192.168.1.1 to
enter the web GUI.
Check the router’s operation mode.
• In the Router mode, the default IP address
is 192.168.1.1.
• In the Repeater / AP mode, use Device
Discovery to nd the router’s IP address.
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RT-N12 C1 Chapter 6: Troubleshooting
ASUS DDNS Service
RT-N12 C1 supports the ASUS DDNS service. When exchanging devices at the
service center, if you have registered the ASUS DDNS service and want to keep
the original domain name, data transfer is a must. Visit your local service center for
more information.
Notes:
• If there is no activity in the domain - such as reconguring the router or accessing the
registered domain name - within 90 days, the system automatically deletes the registered
information.
• If you encounter any problem or difculty in using your device, contact the service center.
Frequently Asked Questions (FAQs)
1. Will the registered information be lost or registered by others?
If you have not updated the registered information in 90 days, the system
automatically deletes the registered information and the domain name may be
registered by others.
2. I did not register the ASUS DDNS for the router I bought six months ago.
Can I still register it?
Yes, you can still register the ASUS DDNS service for your router. The DDNS
service is embedded in your router, so you can register the ASUS DDNS
service anytime. Before registering, click Query to check if the hostname has
been registered or not. If not, the system registers the hostname automatically.
3. I have registered a domain name before and it has been working well until
my friends told me that they could not access my domain name.
Check the following:
1. The internet is working well.
2. The DNS server is working well.
3. The last time you updated the domain name.
If there are still problems in accessing your domain name, contact the service
center.
4. Can I register two domain names to separately access my http and ftp
servers?
No, you cannot. You can only register one domain name for one router. Use
port mapping to implement security in the network.
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Chapter 6: Troubleshooting RT-N12 C1
5. After restarting the router, why is it that I see different WAN IPs in MS
DOS and in the router conguration page?
This is normal. The interval time between the ISP DNS server and ASUS
DDNS results in different WAN IPs in MS DOS and in the router conguration
page. Different ISPs may have different interval time for IP updating.
6. Is the ASUS DDNS service free, or is it just a trial version?
The ASUS DDNS service is a free and embedded service in some ASUS
routers. Check your ASUS router if it supports the ASUS DDNS service.
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RT-N12 C1 Chapter 6: Troubleshooting
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Appendices RT-N12 C1
Notices
ASUS Recycling/Takeback Services
ASUS recycling and takeback programs come from our commitment to the highest
standards for protecting our environment. We believe in providing solutions for you
to be able to responsibly recycle our products, batteries, other components, as well
as the packaging materials. Please go to http://csr.asus.com/english/Takeback.htm
for the detailed recycling information in different regions.
REACH
Complying with the REACH (Registration, Evaluation, Authorisation, and
Restriction of Chemicals) regulatory framework, we published the chemical
substances in our products at ASUS REACH website at http://csr.asus.com/
english/REACH.htm
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:
• This device may not cause harmful interference.
• This device must accept any interference received, including interference that
may cause undesired operation.
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.
Warning: Any changes or modications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Appendices
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RT-N12 C1 Appendices
Country Code Statement
For product available in the USA/Canada market, only channels 1~11 can be
operated. Selection of other channels is not possible.
Prohibition of Co-location
This device and its antenna(s) must not be co-located or operating in conjunction
with any other antenna or transmitter.
Safety Information
To maintain compliance with FCC’s RF exposure guidelines, this equipment should
be installed and operated with minimum distance 20cm between the radiator and
your body. Use on the supplied antenna.
Declaration of Conformity for R&TTE directive 1999/5/EC
Essential requirements – Article 3
Protection requirements for health and safety – Article 3.1a
Testing for electric safety according to EN 60950-1 has been conducted. These are
considered relevant and sufcient.
Protection requirements for electromagnetic compatibility – Article 3.1b
Testing for electromagnetic compatibility according to EN 301 489-1 and EN 301
489-17 has been conducted. These are considered relevant and sufcient.
Effective use of the radio spectrum – Article 3.2
Testing for radio test suites according to EN 300 328- 2 has been conducted.
These are considered relevant and sufcient.
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.
Operation Channels: Ch1~11 for N. America, Ch1~14 Japan, Ch1~13 Europe
(ETSI)
IC Warning
The Class B digital apparatus meets all requirements of the Canadian InterferenceCausing Equipment Regulation.
Cet appareil numerique de la class B respecte toutes les exigences du Reglement
sur le materiel brouilleur du Canada.
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Appendices RT-N12 C1
GNU General Public License
Licensing information
This product includes copyrighted third-party software licensed under the terms of
the GNU General Public License. Please see The GNU General Public License
for the exact terms and conditions of this license. We include a copy of the GPL
with every CD shipped with our product. All future rmware updates will also
be accompanied with their respective source code. Please visit our web site for
updated information. Note that we do not offer direct support for the distribution.
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies of this license
document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your freedom to
share and change it. By contrast, the GNU General Public License is intended
to guarantee your freedom to share and change free software--to make sure the
software is free for all its users. This General Public License applies to most of the
Free Software Foundation’s software and to any other program whose authors
commit to using it. (Some other Free Software Foundation software is covered
by the GNU Library General Public License instead.) You can apply it to your
programs, too.
When we speak of free software, we are referring to freedom, not price. Our
General Public Licenses are designed to make sure that you have the freedom to
distribute copies of free software (and charge for this service if you wish), that you
receive source code or can get it if you want it, that you can change the software or
use pieces of it in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid anyone to deny
you these rights or to ask you to surrender the rights. These restrictions translate
to certain responsibilities for you if you distribute copies of the software, or if you
modify it.
For example, if you distribute copies of such a program, whether gratis or for a
fee, you must give the recipients all the rights that you have. You must make sure
that they, too, receive or can get the source code. And you must show them these
terms so they know their rights.
We protect your rights with two steps: (1) copyright the software, and (2) offer you
this license which gives you legal permission to copy, distribute and/or modify the
software.
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RT-N12 C1 Appendices
Also, for each author’s protection and ours, we want to make certain that everyone
understands that there is no warranty for this free software. If the software is
modied by someone else and passed on, we want its recipients to know that what
they have is not the original, so that any problems introduced by others will not
reect on the original authors’ reputations.
Finally, any free program is threatened constantly by software patents. We wish to
avoid the danger that redistributors of a free program will individually obtain patent
licenses, in effect making the program proprietary. To prevent this, we have made it
clear that any patent must be licensed for everyone’s free use or not licensed at all.
The precise terms and conditions for copying, distribution and modication follow
.
Terms & conditions for copying, distribution, & modication
0. This License applies to any program or other work which contains a notice
placed by the copyright holder saying it may be distributed under the terms of
this General Public License. The “Program”, below, refers to any such program
or work, and a “work based on the Program” means either the Program or
any derivative work under copyright law: that is to say, a work containing
the Program or a portion of it, either verbatim or with modications and/or
translated into another language. (Hereinafter, translation is included without
limitation in the term “modication”.) Each licensee is addressed as “you”.
Activities other than copying, distribution and modication are not covered
by this License; they are outside its scope. The act of running the Program is
not restricted, and the output from the Program is covered only if its contents
constitute a work based on the Program (independent of having been made by
running the Program). Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program’s source code
as you receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice and
disclaimer of warranty; keep intact all the notices that refer to this License and
to the absence of any warranty; and give any other recipients of the Program a
copy of this License along with the Program.
You may charge a fee for the physical act of transferring a copy, and you may
at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion of it,
thus forming a work based on the Program, and copy and distribute such
modications or work under the terms of Section 1 above, provided that you
also meet all of these conditions:
a) You must cause the modied les to carry prominent notices stating that
you changed the les and the date of any change.
b) You must cause any work that you distribute or publish, that in whole or in
part contains or is derived from the Program or any part thereof, to be licensed
as a whole at no charge to all third parties under the terms of this License.
c) If the modied program normally reads commands interactively when run,
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Appendices RT-N12 C1
you must cause it, when started running for such interactive use in the most
ordinary way, to print or display an announcement including an appropriate
copyright notice and a notice that there is no warranty (or else, saying that
you provide a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this License.
(Exception: if the Program itself is interactive but does not normally print such
an announcement, your work based on the Program is not required to print an
announcement.)
These requirements apply to the modied work as a whole. If identiable
sections of that work are not derived from the Program, and can be reasonably
considered independent and separate works in themselves, then this License,
and its terms, do not apply to those sections when you distribute them as
separate works. But when you distribute the same sections as part of a whole
which is a work based on the Program, the distribution of the whole must be on
the terms of this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest your rights to
work written entirely by you; rather, the intent is to exercise the right to control
the distribution of derivative or collective works based on the Program.
In addition, mere aggregation of another work not based on the Program with
the Program (or with a work based on the Program) on a volume of a storage
or distribution medium does not bring the other work under the scope of this
License.
3. You may copy and distribute the Program (or a work based on it, under Section
2) in object code or executable form under the terms of Sections 1 and 2 above
provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable source
code, which must be distributed under the terms of Sections 1 and 2 above on
a medium customarily used for software interchange; or,
b) Accompany it with a written offer, valid for at least three years, to give any
third party, for a charge no more than your cost of physically performing source
distribution, a complete machine-readable copy of the corresponding source
code, to be distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
c) Accompany it with the information you received as to the offer to distribute
corresponding source code. (This alternative is allowed only for noncommercial
distribution and only if you received the program in object code or executable
form with such an offer, in accord with Subsection b above.)
The source code for a work means the preferred form of the work for making
modications to it. For an executable work, complete source code means
all the source code for all modules it contains, plus any associated interface
denition les, plus the scripts used to control compilation and installation of
the executable. However, as a special exception, the source code distributed
need not include anything that is normally distributed (in either source or
binary form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component itself
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RT-N12 C1 Appendices
accompanies the executable.
If distribution of executable or object code is made by offering access to copy
from a designated place, then offering equivalent access to copy the source
code from the same place counts as distribution of the source code, even
though third parties are not compelled to copy the source along with the object
code.
4. You may not copy, modify, sublicense, or distribute the Program except as
expressly provided under this License. Any attempt otherwise to copy, modify,
sublicense or distribute the Program is void, and will automatically terminate
your rights under this License. However, parties who have received copies, or
rights, from you under this License will not have their licenses terminated so
long as such parties remain in full compliance.
5. You are not required to accept this License, since you have not signed it.
However, nothing else grants you permission to modify or distribute the
Program or its derivative works. These actions are prohibited by law if you do
not accept this License. Therefore, by modifying or distributing the Program (or
any work based on the Program), you indicate your acceptance of this License
to do so, and all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
6. Each time you redistribute the Program (or any work based on the Program),
the recipient automatically receives a license from the original licensor to
copy, distribute or modify the Program subject to these terms and conditions.
You may not impose any further restrictions on the recipients’ exercise of the
rights granted herein. You are not responsible for enforcing compliance by third
parties to this License.
7. If, as a consequence of a court judgment or allegation of patent infringement
or for any other reason (not limited to patent issues), conditions are imposed
on you (whether by court order, agreement or otherwise) that contradict the
conditions of this License, they do not excuse you from the conditions of this
License. If you cannot distribute so as to satisfy simultaneously your obligations
under this License and any other pertinent obligations, then as a consequence
you may not distribute the Program at all. For example, if a patent license
would not permit royalty-free redistribution of the Program by all those who
receive copies directly or indirectly through you, then the only way you could
satisfy both it and this License would be to refrain entirely from distribution of
the Program.
If any portion of this section is held invalid or unenforceable under any
particular circumstance, the balance of the section is intended to apply and the
section as a whole is intended to apply in other circumstances.
It is not the purpose of this section to induce you to infringe any patents or
other property right claims or to contest validity of any such claims; this section
has the sole purpose of protecting the integrity of the free software distribution
system, which is implemented by public license practices. Many people have
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Appendices RT-N12 C1
made generous contributions to the wide range of software distributed through
that system in reliance on consistent application of that system; it is up to the
author/donor to decide if he or she is willing to distribute software through any
other system and a licensee cannot impose that choice.
This section is intended to make thoroughly clear what is believed to be a
consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in certain countries
either by patents or by copyrighted interfaces, the original copyright holder
who places the Program under this License may add an explicit geographical
distribution limitation excluding those countries, so that distribution is permitted
only in or among countries not thus excluded. In such case, this License
incorporates the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions of the
General Public License from time to time. Such new versions will be similar in
spirit to the present version, but may differ in detail to address new problems or
concerns.
Each version is given a distinguishing version number. If the Program species
a version number of this License which applies to it and “any later version”, you
have the option of following the terms and conditions either of that version or
of any later version published by the Free Software Foundation. If the Program
does not specify a version number of this License, you may choose any version
ever published by the Free Software Foundation.
10. If you wish to incorporate parts of the Program into other free programs whose
distribution conditions are different, write to the author to ask for permission.
For software which is copyrighted by the Free Software Foundation, write to
the Free Software Foundation; we sometimes make exceptions for this. Our
decision will be guided by the two goals of preserving the free status of all
derivatives of our free software and of promoting the sharing and reuse of
software generally.
NO WARRANTY
11 BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS
NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING
THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE
THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY
AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
NECESSARY SERVICING, REPAIR OR CORRECTION.
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RT-N12 C1 Appendices
12 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED
TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER
PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS
PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING
ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM
(INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY
OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
DGT Warning
Safety Warning
SAFE TEMP: This wireless router should be only used in environments with
ambient temperatures between 5ºC(41ºF) and 40ºC(104ºF).
DO NOT expose to or use near liquids, rain, or moisture. DO NOT use the modem
during electrical storms.
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Appendices RT-N12 C1
ASUSTeK COMPUTER INC. (Asia Pacic)
Address 15 Li-Te Road, Peitou, Taipei, Taiwan 11259
Website www.asus.com.tw
Technical Support
Telephone +886228943447
Support Fax +886228907698
Online support support.asus.com
ASUS COMPUTER INTERNATIONAL (America)
Address 800 Corporate Way, Fremont, CA 94539, USA
Telephone +15029550883
Fax +15029338713
Website usa.asus.com
Online support support.asus.com
ASUS COMPUTER GmbH (Germany and Austria)
Address Harkort Str. 21-23, D-40880 Ratingen, Germany
Fax +492102959911
Website www.asus.de
Online contact www.asus.de/sales*
Technical Support
Telephone (Component) +491805010923
Telephone (System/Notebook/Eee/LCD) +491805010920
Fax +492102959911
Online support support.asus.com
* Available on this site is an online Technical Inquiry Form that you can ll out to contact
technical support.
ASUS Contact information
Page 54
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RT-N12 C1 Appendices
Manufacturer:
ASUSTeK Computer Inc.
Tel:
+886-2-2894-3447
Address: No. 150, LI-TE RD., PEITOU, TAIPEI
112, TAIWAN
Authorised representative
in Europe:
ASUS Computer GmbH
Address:
HARKORT STR. 21-23, 40880
RATINGEN, GERMANY
Authorised distributors
in Turkey:
BOGAZICI BIL GISAYAR SAN. VE TIC. A.S.
Tel:
+90 212 3311000
Address: AYAZAGA MAH. KEMERBURGAZ
CAD. NO.10 AYAZAGA/ISTANBUL
CIZGI Elektronik San. Tic. Ltd. Sti.
Tel:
0090 2123567070
Address: CEMAL SURURI CD. HALIM MERIC
IS MERKEZI No:15/C D: 5-6 34394
MECIDIYEKOY/ISTANBUL
EEE Yönetmeliğine Uygundur.
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