Asus DSL-AC88U User manual

User Guide
DSL-AC88U
Dual-band Wi-Fi ADSL/VDSL
Modem Router

2
Copyright © 2016 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
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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
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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
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SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE
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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
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only for identification or explanation and to the owners’benefit, without intent
to infringe.
E12102
First Edition
October 2016

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Table of contents
1 Getting to know your wireless router 5
Package contents ........................................................................................ 5
Hardware features....................................................................................... 6
2 Creating your network 9
Positioning your router ............................................................................. 9
What you need ...........................................................................................10
Connecting your devices........................................................................11
Before you proceed...................................................................................14
3 Network configuration using the web GUI 21
Logging in to the web GUI.....................................................................21
Setting up the wireless security settings ..........................................23
Managing your network clients ...........................................................25
Monitoring your USB device..................................................................26
Creating your Guest Network ...............................................................28
Using the Traffic Manager.......................................................................29
Managing QoS (Quality of Service) Bandwidth.......................29
Monitoring Traffic ..............................................................................30
Using USB application .............................................................................31
Using AiDisk for File Sharing ..........................................................31
Using the Servers Center ........................................................................34
Using the Network Place (Samba) Share service ....................34
Using the FTP Share service............................................................36
Using the Miscellaneous setting...................................................38
Configuring Advanced settings............................................................39
Setting up the DHCP Server ...........................................................39
Upgrading the firmware..................................................................40
Restoring/Saving/Uploading settings ........................................41

4
Setting up your network printer ..........................................................42
4 Using the utilities 45
Device Discovery .......................................................................................45
Firmware Restoration...............................................................................46
5 Troubleshooting 47
Troubleshooting ........................................................................................47
ASUS DDNS Service ..................................................................................51
Appendices 53
Notices...........................................................................................................53
Networks Global Hotline Information................................................67
ASUS Contact information .....................................................................70

5
1 Getting to know your wireless
router
Package contents
• Ifanyoftheitemsis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.
ADSL/VDSL WiFi modem router
Network cable
AC adapter
Phone cable
Quick Start Guide
Warranty card
Support CD (User Manual/utilities)
Splitter (varies with regions)

6
Hardware features
1
Power LED
O: No power.
On: Device is ready.
Flashing slowly: Rescue mode
Flashing quickly: WPS in progress.
2
5GHz LED
O: No 5GHz signal.
On: Wireless system is ready.
Flashing: Transmitting or receiving data via wireless connection.
3
2.4GHz LED
O: No 2.4GHz signal.
On: Wireless system is ready.
Flashing: Transmitting or receiving data via wireless connection.
4
INTERNET LED
Red: No power or no Internet connection.
On: Connection to a Wide Area Network (WAN).
5
DSL LED
O: No DSL connection.
On: Connection to DSL.
14 5 6
3
278
9 10 11

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6
E-WAN LED
O: No Ethernet connection.
ON: Connection to Ethernet.
7
LAN LED
O: No power or no physical connection.
On: Has physical connection to a local area network (LAN).
8
USB LED
O: No power or no physical connection with a USB device.
On: Has physical connection with a USB device.
9
USB 3.0 port
Insert a USB 3.0/2.0 device such as USB hard disk or USB flash drive into the
port.
Insert your iPad’s USB cable into the port to charge your iPad.
10 LED Button
This button turns on/off the LED indicators.
11 Wi-Fi Button
This button enables or disables Wi-Fi.
Use only the power adapter that came with your package. Using
other adapters may damage the device.
DC Power adapter DC output 19V with max. 1.75A current
Operating
Temperature
0~40oCStorage Temperature 0~70oC
Operating Humidity 50~90% Storage Humidity 20~90%
Power adapter specications:

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12 Reset button
This button resets or restores the system to its factory default settings.
13 WPS button
This button launches the WPS Wizard.
14 DSL port
Connect to a splitter or to a telephone outlet via an RJ-11 cable.
15 LAN 1 ~ 4 ports
Connect network cables into these ports to establish LAN connection.
16 WAN port
Connect a network cable into this port to establish WAN connection.
17 USB 2.0 port
Insert a USB 2.0 devices such as USB hard disks or USB flash drives into this
port.
18
Power (DC-IN) port
Insert the bundled AC adapter into this port and connect your router to a
power source.
19 Power button
This button powers on or powers off the router.
15
12
13 14 16 17 18 19

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2 Creating your network
Positioning your router
To get the best wireless network performance from your wireless
router, follow the recommendations below:
• Placethewirelessrouteratthecenterofyournetworkfor
maximum wireless coverage.
• 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.
90°
WiFi
LED

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What you need
To set up your network, you need one or two computers that meet
the following system requirements:
• EthernetRJ-45(LAN)port(10Base-T/100Base-TX/1000Base-T)
• IEEE802.11a/b/g/n/acwirelesscapability
• AninstalledTCP/IPservice
• WebbrowsersuchasMicrosoftInternetExplorer,Mozilla
Firefox, Apple Safari, or Google Chrome
• Ifyourcomputerdoesnothavebuilt-inwirelesscapabilities,
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ADSL/VDSLrouter
supports 2.4GHz and 5GHz wireless signals simultaneously.
This allows you to browse the Internet or access e-mail
messages using the 2.4GHz band while streaming high-
definition audio/video files such as movies or music using the
5GHz band.
• IfyouareusingonlyonecomputerwithasinglebandIEEE
802.11a/b/g/n/ac WLAN adapter, you will only be able to use
the 2.4GHz band.
• IfyouareusingonlyonecomputerwithadualbandIEEE
802.11a/b/g/n/ac WLAN adapter, you will be able to use the
2.4GHz or 5GHz band.
• IfyouareusingtwocomputerswithbothIEEE802.11a/b/g/
n/ac WLAN adapters, you will be able to use both 2.4GHz and
5GHz bands simultaneously.
• TheEthernetRJ-45cablesusedtoconnectthenetwork
devices should not exceed 100 meters.

11
Connecting your devices
• Use a wired connection when setting up your wireless router
to avoid possible wireless setup issues.
• 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.If
your modem has a backup battery, remove it as well.
• Rebootyourcomputer(recommended).

12
Wired connection
To set up your ADSL/VDSL router using a wired connection:
1. Insert the splitter’s line connector to the phone outlet and
connect your phone into the phone port.
2. Using the bundled phone cable, connect your DSL-AC88U’s DSL
port to the splitter’s DSL port.
3. Using the bundled network cable, connect your computer to
the ADSL/VDSL modem router’s LAN port.
Computer
Wall Power Outlet
Power
Wall telephone
outlet
LAN

13
Wireless connection
To set up your ADSL/VDSL router using a wireless connection:
1. Insert your wireless modem router’s AC adapter into the DC-IN
port and plug it to a power outlet.
2. Using the bundled phone cable, connect your DSL-AC88U’s DSL
port to the splitter’s DSL port.
3. Install an IEEE 802.11 a/b/g/n/ac WLAN adapter to your
computer to connect to the wireless network.
Computer
Wall Power Outlet
Power
Wall telephone
outlet

14
Before you proceed
Before configuring your wireless router, apply the steps
described in this section to each computer on the network to
avoid problems connecting to the wireless network.
A. Disable any congured proxy servers.
Windows®7 / 8*
The screenshots provided are for Windows® 7 only. The steps
and options may be different for Windows® 8 and Windows® 8.1.
1. Click Start > Internet
Explorer.
2. Click Tools > Internet
options > Connections
tab > LAN settings.

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3. From the Local Area
Network (LAN) Settings
window, uncheck Use a
proxy server for your LAN.
4. Click OK then Apply.
MAC OSX
1. From your Apple
Safari browser, click
Safari > Preferences
> Advanced. On the
Proxies item, click
Change Settings...
2. From the Network
screen, uncheck FTP
Proxy and Web Proxy
(HTTP).
3. Click OK then Apply.

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B. Congure TCP/IP settings to automatically obtain
an IP address.
Windows®7 / 8
2. On the Network Connections
window, click on Local Area
Connection.
3. On the Local Area Connection
Network Status window, click
Properties.
1. Click Start > Control Panel
> Network and Internet
> Network and Sharing
Center > Change adapter
settings.
The screenshots provided are for Windows® 7 only. The steps
and options may be different for Windows® 8 and Windows® 8.1.

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4. Select Internet Protocol
Version 4 (TCP/IPv4) or
Internet Protocol Version
6 (TCP/IPv6), then click
Properties.
6. Tick Obtain an IP address
automatically.
7. Click OK.

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MAC OSX
1. Click Apple Menu
>System Preferences >
Network
2. Click Ethernet on the
left panel.
3. On the Configure IPv4,
item select Using
DHCP.
4. Cllick Apply.

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1. Ensure that the DSL LED on the DSL-AC88U front panel is on
and not flashing.
Setting up your ADSL/VDSL router

20
2. Launch your web browser.The QIS web page appears
automatically and starts detecting your connection type,
VPI/VCI value and encapsulation mode.
If the QIS web page does not appear after you launched your
web browser, disable the proxy settings on your web browser.