D-Link DSL-3900 User manual

Version 1.00 | 10/31/2018
User Manual
DSL-3900
Wireless AC2600 Dual-Band Gigabit ADSL2+/VDSL2
Modem Router

iD-Link DSL-3900 User Manual
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person or organization of such revisions or changes.
Manual Revisions
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Copyright © 2018 by D-Link Corporation, Inc.
All rights reserved. This publication may not be reproduced, in whole or in part, without prior expressed written permission from D-Link Corporation, Inc.
Preface
Revision Date Description
1.00 October 30th, 2018 Initial release

iiD-Link DSL-3900 User Manual
Table of Contents
Preface................................................................................. i
Product Overview..............................................................1
Package Contents.........................................................................1
System Requirements.................................................................2
Introduction ................................................................................... 3
Features............................................................................................ 4
Hardware Overview.....................................................................5
Back Panel ...............................................................................5
Side Panel ................................................................................6
LEDs........................................................................................... 7
Installation......................................................................... 8
Before you Begin...........................................................................8
Wireless Installation Considerations......................................9
Manual Setup...............................................................................10
Getting Started................................................................12
Setup Wizard ................................................................................13
Conguration...................................................................19
Home ..............................................................................................19
Internet...................................................................................20
IPv4 .....................................................................................21
DSL......................................................................................22
DSL-3785................................................................................23
Connected Clients..............................................................24
USB Device............................................................................25
Settings ..........................................................................................26
Wizard.....................................................................................26
Internet...................................................................................26
ADSL...................................................................................27
VDSL ...................................................................................29
Ethernet.............................................................................30
WAN Settings...................................................................31
Dynamic IP (DHCP)..................................................31
Static IP ........................................................................32
PPPoE............................................................................33
PPPoA...........................................................................35
Bridge Mode ..............................................................37
Wireless ..................................................................................38
Advanced Settings .............................................................39
Guest Zone.......................................................................44
Network..................................................................................45
USB...........................................................................................48
Features..........................................................................................49
Firewall ...................................................................................49
Application............................................................................50
ACL...........................................................................................51
Port Forwarding ..................................................................52
DMZ (Exposed Host).....................................................54
IP/MAC/Web Filtering........................................................55
IP Filter ...............................................................................55
MAC Filter .........................................................................57
Table of Contents

iiiD-Link DSL-3900 User Manual
Table of Contents
Website Filter...................................................................58
Static Route...........................................................................59
Dynamic DNS .......................................................................60
IGMP........................................................................................61
Management................................................................................62
Time & Schedule .................................................................62
Time....................................................................................62
Schedule ...........................................................................64
Log Info ..................................................................................65
System Log.......................................................................66
System Settings...................................................................67
Admin.................................................................................68
Firmware Upgrade..............................................................69
Statistics.................................................................................70
Diagnostics ...........................................................................71
Connect and Share a USB Device....................................72
Connect and Share a USB Storage Device.........................72
Connecting from a Windows-Based PC......................73
Connecting from a Mac....................................................78
Connect a Wireless Client to Your Router.......................82
WPS Button...................................................................................82
Windows® 10................................................................................83
Windows® 8...................................................................................85
WPA/WPA2 ............................................................................85
Windows® 7...................................................................................87
WPA/WPA2 ............................................................................87
WPS..........................................................................................89
Windows Vista®............................................................................93
WPA/WPA2 ............................................................................94
Troubleshooting..............................................................96
Wireless Basics...............................................................100
What is Wireless?...................................................................... 101
Tips................................................................................................ 103
Wireless Modes......................................................................... 104
Networking Basics.........................................................105
Check your IP address............................................................ 105
Statically Assign an IP address............................................ 106
Wireless Security ......................................................... 107
What is WPA? ................................................................ 107
Technical Specications................................................108
Regulatory Statements .................................................109

1D-Link DSL-3900 User Manual
Section 1 - Product Overview
Product Overview
Package Contents
Note: Using a power supply other than the one included with the DSL-3900 may cause damage and void the warranty for this product.
If any of the above items are missing, please contact your reseller.
DSL-3900
Wireless AC2600 Dual-Band Gigabit ADSL2+/VDSL2 Modem Router
Power Adapter
Ethernet Cable
Phone Cable

2D-Link DSL-3900 User Manual
Section 1 - Product Overview
Network Requirements
• An active subscription with an Internet Service Provider using one of the
following connection types:
• A VDSL/ADSL connection to a telephone line using the DSL port
• An 802.11ac/n/g/b/a wireless or Ethernet port
Web-based Conguration
Utility Requirements
Computer with the following:
• Microsoft Windows® 10/8/7/Vista/XP SP3 or Mac with OS X 10.7 or higher
• An installed Ethernet adapter
Browser Requirements:
• Internet Explorer 8 or higher
• EDGE Browser 20 or higher
• Firefox 20 or higher
• Safari 4 or higher
• Chrome 17 or higher
Windows®Users: Make sure you have the latest version of Java installed. Visit
www.java.com to download the latest version.
System Requirements

3D-Link DSL-3900 User Manual
Section 1 - Product Overview
Introduction
The D-Link DSL-3900 Wireless AC2600 Dual-Band Gigabit ADSL2+/VDSL2 Modem Router shares your DSL Internet connection
over blazing fast Wireless AC. It also comes equipped with a USB port, and four Gigabit Ethernet 10/100/1000 ports.
The DSL-3900's USB sharing technology lets you take advantage of le sharing. Simply plug in a USB storage drive into the USB
port on the back of your DSL-3900 and you can access les, stream videos, view photos, or listen to music on your laptop or
mobile devices. The intuitive interface lets anyone immediately connect to a variety of entertainment options stored on your
own storage device.
The DSL-3900 provides incredible speeds, smart antenna technology, and fast ports.

4D-Link DSL-3900 User Manual
Section 1 - Product Overview
• Faster Wireless Networking - The DSL-3900 features the updated 802.11ac Wave 2 specication, which
improves on the bandwidth, range, and speed of 802.11ac Wave 1, and can deliver up to 2600 Mbps*to your
wireless devices. It operates on both the 2.4 GHz and 5 GHz bands to allow separation of trac so users can
participate in high-bandwidth activities, such as video streaming, online gaming, and real-time audio, without
aecting low-priority trac like email and web surng.
• Compatible with 802.11n/g/b/a Devices - The DSL-3900 is still fully backwards compatible with the 802.11n,
802.11g, and 802.11a standards, so it can connect with existing 802.11n, 802.11g, 802.11b, and 802.11a wireless
devices.
• Advanced Features - The web-based user interface displays a number of advanced network management
features including:
• Filtering - Easily apply content ltering based on IP address, MAC address, URL, and/or domain
name.
• Scheduling - The rewall, wireless, and port forwarding features can be scheduled to be active on a
schedule you dene.
• User-friendly Setup Wizard - Through its easy-to-use web-based user interface, the DSL-3900 lets you control
what information is accessible to those on the wireless network, whether from the Internet, or from your
company’s server. Congure your router to your specic settings within minutes.
* Maximum wireless signal rate derived from IEEE Standard 802.11a, 802.11b, 802.11g, 802.11n, and 802.11ac specications. Actual data throughput will vary. Network conditions
and environmental factors, including volume of network trac, building materials and construction, and network overhead, lower actual data throughput rate. Environmental
conditions will adversely aect wireless signal range.
Features

5D-Link DSL-3900 User Manual
Section 1 - Product Overview
Hardware Overview
Back Panel
1 Power Port Connector for the supplied power adapter.
2 Power Button Press to power on / power o the device.
3 Gigabit LAN Ports Connects to network devices such as computers, switches, storage (NAS) devices and
game consoles at speeds of up to 1000 Mbps.
4Gigabit WAN Port Connect an Ethernet cable that is connected to a WAN or modem here.
5 DSL port Connects to an DSL-enabled telephone line.
6 WPS Button Press to start WPS pairing mode.
7 Wi-Fi Button Press to enable/disable Wi-Fi.
8 Reset Button To reset the device to its factory default settings, use a paper clip to press and hold the
reset button for 5 seconds.
1
2
34
56
7
8

6D-Link DSL-3900 User Manual
Section 1 - Product Overview
Front Panel
1 USB 3.0 port Connects to USB ash drives to share content.
1

7D-Link DSL-3900 User Manual
Section 1 - Product Overview
Hardware Overview
LEDs
1Power Solid green A solid green light indicates the device is powered on and working properly.
Solid red A solid red light indicates that the device is booting or an error has occurred.
2Broadband
Solid green A solid green light indicates a proper connection to a DSL-enabled telephone line.
Blinking green A blinking red turning to green light indicates the DSL port is negotiating a connection.
O An unlit light indicates no connection to a DSL enabled-telephone line.
3Internet
Solid green A solid green light indicates an Internet connection.
Blinking green A blinking green light indicates Internet activity.
Solid red A solid red light indicates a PPP or DHCP failure. Check your username and password.
Blinking Red/
Green
A blinking LED that alternates between red for 1 second then green for 1 second
indicates that the rmware is currently being updated.
O An unlit light indicates there is no broadband connection available, or the Internet
connection attempt timed out.
4Wireless
Solid green A solid green light indicates that either of the 2.4/5 GHz wireless networks are enabled.
Blinking green A blinking green light indicates wireless activity.
O An unlit light indicates that the wireless functionality is disabled.
5Ethernet
Solid green A solid green light indicates a device is connected to the respective LAN port.
Blinking green A blinking green light indicates LAN port activity.
O An unlit light indicates that no Ethernet devices are connected.
6WPS Blinking green A blinking green light indicates the WPS process is active.
123456

8D-Link DSL-3900 User Manual
Section 2 - Installation
Before you Begin
Installation
This section will walk you through the installation process. Placement of the router is very important. Do not place the router in
an enclosed area such as a closet, cabinet, attic, or garage.
Note: This installation section is written for users who are setting up their home Internet service with a new or factory reset
Wireless AC2600 Dual-Band Gigabit ADSL2+/VDSL2 Modem Router. If you are replacing an existing DSL modem and/or router,
you may need to modify these steps.
• Make sure to have your DSL service information provided by your Internet Service Provider handy. This
information is likely to include your DSL account's username and password. Your ISP may also supply you with
additional WAN conguration settings which are necessary to establish a connection. This information may
include the connection type (DHCP IP, Static IP, PPPoE, or PPPoA) and/or ATM PVC details.
• If you are connecting a considerable amount of networking equipment, it may be a good idea to take the time to
label each cable or take a picture of your existing setup before making any changes.
• We suggest setting up your DSL-3900 from a single device and verifying that it is connected to the Internet before
connecting additional devices.
• If you have DSL and are connecting via PPPoE, make sure you disable or uninstall any PPPoE connection software
such as WinPoET, BroadJump, or EnterNet 300 from your computer as the DSL-3900 will be providing this
functionality.

9D-Link DSL-3900 User Manual
Section 2 - Installation
Wireless Installation Considerations
The D-Link wireless router lets you access your network using a wireless connection from virtually anywhere within the
operating range of your wireless network. Keep in mind that the number, thickness and location of walls, ceilings, or other
objects that the wireless signals must pass through may limit the range. Typical ranges vary depending on the types of
materials and background RF (radio frequency) noise in your home or business. The key to maximizing wireless range is to
follow these basic guidelines:
1. Keep the number of walls and ceilings between the D-Link router and other network devices to a minimum -
each wall or ceiling can reduce your adapter’s range from 3 to 90 feet (1 to 30 meters.) Position your devices so
that the number of walls or ceilings is minimized.
2. Be aware of the direct line between network devices. A wall that is 1.5 feet (0.5 meters) thick, at a 45-degree
angle appears to be almost 3 feet (1 meter) thick. At a 2-degree angle it looks over 42 feet (14 meters) thick!
Position devices so that the signal will travel straight through a wall or ceiling (instead of at an angle) for better
reception.
3. Building materials make a dierence. A solid metal door or aluminum studs may have a negative eect on
range. Try to position access points, wireless routers, and computers so that the signal passes through drywall or
open doorways. Materials and objects such as glass, steel, metal, walls with insulation, water (sh tanks), mirrors,
le cabinets, brick, and concrete will degrade your wireless signal.
4. Keep your product away (at least 3 to 6 feet or 1 to 2 meters) from electrical devices or appliances that generate
RF noise.
5. If you are using 2.4 GHz cordless phones or X-10 (wireless products such as ceiling fans, lights, and home
security systems), your wireless connection may degrade dramatically or drop completely. Make sure your 2.4
GHz phone base is as far away from your wireless devices as possible. The base transmits a signal even if the
phone is not in use.

10D-Link DSL-3900 User Manual
Section 2 - Installation
Manual Setup
1Position your DSL-3900 near your PC and a telephone wall jack which provides DSL service. Keep the modem router in
an open area for better wireless coverage.
2Plug one end of the supplied DSL phone cable into the DSL port on the back of the modem router, and the other end
into the telephone wall jack.
Note: If a DSL microsplitter/microlter is included in the package contents, install it in line with your telephone wall
jack.
PC
DSL-3900 Phone
PC
DSL-3900 Phone

11D-Link DSL-3900 User Manual
Section 2 - Installation
Connect the supplied power adapter to the modem router and a power outlet, and press the power button. The
device LEDs will light up. Wait approximately three minutes before moving on to step 4.
Caution: Use only the included power adapter with this product.
Plug one end of the supplied Ethernet cable into a yellow Ethernet port on the back of the modem router, and the
other end into the Ethernet port on your computer.
If you are setting up the DSL-3900 using a laptop or mobile device, connect to it using the Wi-Fi network name
and password printed on the label attached to the back of your router.
3
4
DSL-3900
Power
PC
DSL-3900
Power
PC
PC
Phone
Phone

12D-Link DSL-3900 User Manual
Section 3 - Getting Started
There are two ways you can congure your router to connect to the Internet and connect to your clients:
• D-Link Setup Wizard - This wizard will launch when you log into the router for the rst time. Refer to Setup Wizard on
page 13.
• Manual Setup - Log into the router and manually congure your router. Refer to Conguration on page 20.
Getting Started

13D-Link DSL-3900 User Manual
Section 3 - Getting Started
Setup Wizard
If this is your rst time using the router, open your web browser and enter
http://dlinkrouter.local./ in the address bar. Alternatively, enter the IP address
of the router (default: http://192.168.1.1).
If this is your rst time using the router, the router the default admin password
is printed on the product label sticker on the bottom. The enter the letters in
the picture below into the second box. If you cannot read the letters, click to
generate a new picture.
Click Log In.

14D-Link DSL-3900 User Manual
Section 3 - Getting Started
The wizard is designed to guide you through a step-by-step process to congure
your new D-Link router and connect to the Internet. Ensure that your DSL phone
cable is connected to both the router and the wall jack.
Click Next to continue.
First, you must select your WAN Access Type. The options are ADSL,VDSL, or
Ethernet. To quickly nd your ISP's settings, select your Country and ISP. The
VPI and VCI values will automatically be congured.
Click Next to continue.

15D-Link DSL-3900 User Manual
Section 3 - Getting Started
If the router cannot determine your connection type, a list of connection types
to choose from will be displayed. Select your Internet connection type (this
information can be obtained from your Internet Service Provider) and click
Next to continue.
If the router detected or you selected PPPoE, enter your PPPoE username and
password, choose the Connection Type if asked, and click Next to continue.
Note: Make sure to remove your PPPoE software from your computer. The software
is no longer needed and will not work through a router.
Setup Wizard (continued)

16D-Link DSL-3900 User Manual
Section 3 - Getting Started
If you selected Static IP, enter the IP address, subnet mask, gateway address,
and DNS servers provided by your ISP, then choose the Connection Type if
asked. Click Next to continue.
Setup Wizard (continued)
If the router detected or you selected PPPoA, enter your PPPoA username and
password, choose the Connection Type if asked, and click Next to continue.
Note: Make sure to remove your PPPoA software from your computer. The software
is no longer needed and will not work through a router.
PPPoA connection type is only available for ADSL connections.