Asus RT-AC1900 Dual Band User manual

User Guide
RT-AC1900 Dual Band
3x3 Wireless-AC 1900 Gigabit Router
1900

2
Copyright © 2014 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,
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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 identification or explanation and to the owners’benefit, without intent
to infringe.
E11212
First Edition
December 2015

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Table of contents
1 Getting to know your wireless router 6
1.1 Welcome! ........................................................................................6
1.2 Package contents.........................................................................6
1.3 Your wireless router.....................................................................7
1.4 Positioning your router..............................................................9
1.5 Setup Requirements ................................................................ 10
1.6 Router Setup............................................................................... 11
1.6.1 Wired connection..................................................................11
1.6.2 Wireless connection.............................................................12
2 Getting started 14
2.1 Logging into the Web GUI ..................................................... 14
2.2 Quick Internet Setup (QIS) with Auto-detection ........... 15
2.3 Connecting to your wireless network................................ 19
3 Configuring the General settings 20
3.1 Using the Network Map ......................................................... 20
3.1.1 Setting up the wireless security settings......................21
3.1.2 Managing your network clients.......................................22
3.1.3 Monitoring your USB device.............................................23
3.2 Creating a Guest Network...................................................... 26
3.3 Using the Traffic Manager ...................................................... 28
3.3.1 Managing QoS (Quality of Service) Bandwidth..........28
3.3.2 Monitoring Traffic .................................................................31
3.4 Setting up Parental Control................................................... 32
3.5 Using the USB Application..................................................... 33
3.5.1 Using AiDisk...............................................................................33
3.5.2 Using Servers Center............................................................35
3.5.3 3G/4G ........................................................................................41

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Table of contents
3.6 Using AiCloud............................................................................. 43
3.6.1 Cloud Disk................................................................................44
3.6.2 Smart Access...........................................................................46
3.6.3 Smart Sync...............................................................................47
4 Configuring the Advanced Settings 48
4.1 Wireless......................................................................................... 48
4.1.1 General......................................................................................48
4.1.2 WPS ............................................................................................51
4.1.3 Bridge ........................................................................................53
4.1.4 Wireless MAC Filter ...............................................................55
4.1.5 RADIUS Setting ......................................................................56
4.1.6 Professional.............................................................................57
4.2 LAN................................................................................................. 59
4.2.1 LAN IP ........................................................................................59
4.2.2 DHCP Server............................................................................60
4.2.3 Route .........................................................................................62
4.2.4 IPTV ...............................................................................................63
4.3 WAN ............................................................................................... 64
4.3.1 Internet Connection.............................................................64
4.3.2 Port Trigger..............................................................................67
4.3.3 Virtual Server/Port Forwarding........................................69
4.3.4 DMZ............................................................................................72
4.3.5 DDNS .........................................................................................73
4.3.6 NAT Passthrough...................................................................74
4.4 IPv6................................................................................................. 75
4.5 VPN Server................................................................................... 76
4.6 Firewall.......................................................................................... 77
4.6.1 General......................................................................................77
4.6.2 URL Filter ..................................................................................77
4.6.3 Keyword filter .........................................................................78

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Table of contents
4.6.4 Network Services Filter .......................................................79
4.7 Administration ........................................................................... 81
4.7.1 Operation Mode ....................................................................81
4.7.2 System.......................................................................................82
4.7.3 Firmware Upgrade................................................................83
4.7.4 Restore/Save/Upload Setting ...........................................83
4.8 System Log .................................................................................. 84
5 Utilities 85
5.1 Device Discovery....................................................................... 85
5.2 Firmware Restoration .............................................................. 86
5.3 Setting up your printer server .............................................. 87
5.3.1 ASUS EZ Printer Sharing .....................................................87
5.3.2 Using LPR to Share Printer .................................................91
5.4 Download Master...................................................................... 96
5.4.1 Configuring Bit Torrent download settings.................97
5.4.2 NZB settings............................................................................98
6 Troubleshooting 99
6.1 Basic Troubleshooting............................................................. 99
6.2 Frequently Asked Questions (FAQs) ................................102
Appendices 112
Notices .....................................................................................................112
ASUS Contact information..................................................................126
Networks Global Hotline Information.............................................127

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1 Getting to know your wireless
router
NOTES:
• Ifanyoftheitemsaredamagedormissing,contactASUSfor
technical inquiries and support, Refer to the ASUS Support Hotline
list at the back of this user manual.
• Keeptheoriginalpackagingmaterialincaseyouwouldneedfuture
warranty services such as repair or replacement.
RT-AC1900 Wireless Router Network cable (RJ-45)
Power adapter Quick Start Guide
Support CD (Manual)
1.1 Welcome!
Thank you for purchasing an ASUS RT-AC1900 Wireless Router!
The ultra-thin and stylish RT-AC1900 features a 2.4GHz and 5GHz
dual bands for an unmatched concurrent wireless HD streaming;
SMB server, UPnP AV server, and FTP server for 24/7 file sharing;
a capability to handle 300,000 sessions; and the ASUS Green
Network Technology, which provides up to 70% power-saving
solution.
1.2 Package contents

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1.3 Your wireless router
1900
LAN 1~4 LED
Off: No power or no physical connection.
On: Has physical connection to a local area network (LAN).
WAN (Internet) LED
Off: No power or no physical connection.
On: Has physical connection to a wide area network (WAN).
USB 3.0 / 2.0 LED
Off: No power or no physical connection.
On: Has physical connection to USB 3.0 / 2.0 devices.
2.4GHz LED / 5GHz LED
Off: No 2.4GHz or 5GHz signal.
On:Wireless system is ready.
Flashing:Transmitting or receiving data via wireless connection.
Power LED
Off: No power.
On: Device is ready.
Flashing slow: Rescue mode
Flashing quick:WPS is processing.
WPS button
This button launches the WPS Wizard.

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NOTES:
• Useonlytheadapterthatcamewithyourpackage.Usingother
adapters may damage the device.
• Specifications:
DC Power adapter DC Output: +19V with max 1.75A current;
Operating
Temperature 0~40oCStorage 0~70oC
Operating Humidity 50~90% Storage 20~90%
WI-FI On/Off button
Press this button to turn on /off the Wi-Fi connection.
Power button
Press this button to power on or off the system.
Power (DC-IN) port
Insert the bundled AC adapter into this port and connect your router to a power source.
USB 3.0 / 2.0 ports
Insert USB 3.0 / 2.0 devices such as USB hard disks or USB flash drives into these ports.
Insert your iPad’s USB cable into one of these ports to charge your iPad.
WAN (Internet) port
Connect a network cable into this port to establish WAN connection.
LED On/Off button
Press this button to turn on/off the backlight LED on the panel.
LAN 1 ~ 4 ports
Connect network cables into these ports to establish LAN connection.
Reset button
This button resets or restores the system to its factory default settings.
On
Off

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1.4 Positioning your router
For the best wireless signal transmission between the wireless
router and the network devices connected to it, ensure that you:
• Placethewirelessrouterinacentralizedareaforamaximum
wireless coverage for the network devices.
• Keepthedeviceawayfrommetalobstructionsandawayfrom
direct sunlight.
• Keepthedeviceawayfrom802.11gor20MHzonlyWi-Fi
devices, 2.4GHz computer peripherals, Bluetooth devices,
cordless phones, transformers, heavy-duty motors, fluorescent
lights, microwave ovens, refrigerators, and other industrial
equipment to prevent signal interference or loss.
• Alwaysupdatetothelatestfirmware.VisittheASUSwebsiteat
http://www.asus.com to get the latest firmware updates.
• Toensurethebestwirelesssignal,orientthethreedetachable
antennas as shown in the drawing below.
45°
90°
45°
1900

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1.5 Setup Requirements
To set up your wireless network, you need a computer that meets
the following system requirements:
• EthernetRJ-45(LAN)port(10Base-T/100Base-TX/
1000BaseTX)
• IEEE802.11a/b/g/n/acwirelesscapability
• AninstalledTCP/IPservice
• WebbrowsersuchasInternetExplorer,Firefox,Safari,or
Google Chrome
NOTES:
• Ifyourcomputerdoesnothavebuilt-inwirelesscapabilities,youmay
install an IEEE 802.11a/b/g/n/ac WLAN adapter to your computer to
connect to the network.
• Withitsdualbandtechnology,yourwirelessroutersupports2.4GHz
and 5GHz wireless signals simultaneously. This allows you to do
Internet-related activities such as Internet surfing or reading/writing
e-mail messages using the 2.4GHz band while simultaneously
streaming high-definition audio/video files such as movies or music
using the 5GHz band.
• SomeIEEE802.11ndevicesthatyouwanttoconnecttoyournetwork
may or may not support 5GHz band. Refer to the device's manual for
specifications.
• TheEthernetRJ-45cablesthatwillbeusedtoconnectthenetwork
devices should not exceed 100 meters.

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1.6 Router Setup
IMPORTANT!
• Useawiredconnectionwhensettingupyourwirelessrouterto
avoid possible setup problems.
• BeforesettingupyourASUSwirelessrouter,dothefollowing:
 • Ifyouarereplacinganexistingrouter,disconnectitfromyour
network.
 • Disconnectthecables/wiresfromyourexistingmodemsetup.If
your modem has a backup battery, remove it as well.
 • Rebootyourcablemodemandcomputer(recommended).
1.6.1 Wired connection
NOTE: You can use either a straight-through cable or a crossover cable
for wired connection.
To set up your wireless router via wired connection:
1. Insert your wireless router’s AC adapter to the DC-IN port and
plug it to a power outlet.
RT-AC1900
Computer
Wall Power Outlet
LAN
Modem
Power
WAN

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2. Using the bundled network cable, connect your computer to
your wireless router’s LAN port.
IMPORTANT! Ensure that the LAN LED is blinking.
3 Using another network cable, connect your modem to your
wireless router’s WAN port.
4. Insert your modem’s AC adapter to the DC-IN port and plug it
to a power outlet.
1.6.2 Wireless connection
To set up your wireless router via wireless connection:
1. Insert your wireless router’s AC adapter to the DC-IN port and
plug it to a power outlet.
2 Using the bundled network cable, connect your modem to
your wireless router’s WAN port.
RT-AC1900
Wall Power Outlet
Modem
Power
WAN

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3. Insert your modem’s AC adapter to the DC-IN port and plug it
to a power outlet.
4. Install an IEEE 802.11a/b/g/n/ac WLAN adapter on your
computer.
NOTES:
• Fordetailsonconnectingtoawirelessnetwork,refertotheWLAN
adapter’s user manual.
• Tosetupthesecuritysettingsforyournetwork,refertothesection
Setting up the wireless security settings in Chapter 3 of this user
manual.

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2 Getting started
2.1 Logging into the Web GUI
Your ASUS Wireless Router comes with an intuitive web graphical
user interface (GUI) that allows you to easily configure its various
features through a web browser such as Internet Explorer, Firefox,
Safari, or Google Chrome.
NOTE: The features may vary with different firmware versions.
To log into the web GUI:
1. On your web browser, manually key in the wireless router’s
default IP address: 192.168.1.1 or enter http://router.asus.com.
2. On the login page, key in the default user name (admin) and
password (admin).
3. You can now use the Web GUI to configure various settings of
your ASUS Wireless Router.
NOTE: If you are logging into the Web GUI for the first time, you will be
directed to the Quick Internet Setup (QIS) page automatically.
Navigation
panel
QIS
Top command buttons
Information
banner
middle
column
right column

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2.2 Quick Internet Setup (QIS) with Auto-
detection
The Quick Internet Setup (QIS) function guides you in quickly
setting up your Internet connection.
NOTE: When setting the Internet connection for the first time, press
the Reset button on your wireless router to reset it to its factory default
settings.
To use QIS with auto-detection:
1. Log into the Web GUI. The QIS page launches automatically.
The server 192.168.1.1 at RT-AC1900 requires a username and password.
NOTES:
• Bydefault,theloginusernameandpasswordforyourwireless
router's Web GUI is admin. For details on changing your wireless
router's login username and password, refer to section 4.7.2 System.
• Thewirelessrouter'sloginusernameandpasswordisdifferentfrom
the 2.4GHz/5GHz network name (SSID) and security key. The wireless
router's login username and password allows you to log into your
wireless router's Web GUI to configure your wireless router's settings.
The 2.4GHz/5GHz network name (SSID) and security key allows Wi-Fi
devices to log in and connect to your 2.4GHz/5GHz network.

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2. The wireless router automatically detects if your ISP connection
type is Dynamic IP, PPPoE, PPTP, L2TP, and Static IP. Key in
the necessary information for your ISP connection type.
IMPORTANT! Obtain the necessary information from your ISP about
the Internet connection type.
for Automatic IP (DHCP)
for PPPoE, PPTP, and L2TP

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for Static IP
NOTES:
• Theauto-detectionofyourISPconnectiontypetakesplacewhen
you configure the wireless router for the first time or when your
wireless router is reset to its default settings.
• IfQISfailedtodetectyourInternetconnectiontype,clickSkip to
manual setting and manually configure your connection settings.
3. Assign the wireless network name (SSID) and security key for
your 2.4GHz and 5 GHz wireless connection. Click Apply when
done.

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4. Your Internet and wireless settings are displayed. Click Next to
continue.
5. Read the wireless network connection tutorial. When done,
click Finish.

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2.3 Connecting to your wireless network
After setting up your wireless router via QIS, you can connect your
computer or other smart devices to your wireless network.
To connect to your network:
1. On your computer, click the network icon in the notification
area to display the available wireless networks.
2. Select the wireless network that you want to connect to, then
click Connect.
3. You may need to key in the network security key for a secured
wireless network, then click OK.
4. Wait while your computer establishes connection to the
wireless network successfully. The connection status is
displayed and the network icon displays the connected
status.
NOTES:
• Refertothenextchaptersformoredetailsonconfiguringyour
wireless network's settings.
• Refertoyourdevice'susermanualformoredetailsonconnectingit
to your wireless network.

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3 Configuring the General
settings
3.1 Using the Network Map
Network Map allows you to configure your network’s security
settings, manage your network clients, and monitor your USB
device.