D-Link DIR-879 User manual

Version 1.01 | 2016/05/31
User Manual
DIR-879
AC1900 Wi-Fi Router

iD-Link DIR-879 User Manual
D-Link reserves the right to revise this publication and to make changes in the content hereof without obligation to notify any
person or organization of such revisions or changes.
Manual Revisions
Trademarks
D-Link and the D-Link logo are trademarks or registered trademarks of D-Link Corporation or its subsidiaries in the United States or other countries.
All other company or product names mentioned herein are trademarks or registered trademarks of their respective companies.
Apple®, Apple logo®, Safari®, iPhone®, iPad®, iPod touch® and Macintosh® are trademarks of Apple Inc., registered in the U.S. and other countries.
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Internet Explorer®, Windows® and the Windows logo are trademarks of the Microsoft group of companies.
Copyright © 2016 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.
Power Usage
This device is an Energy Related Product (ErP) with High Network Availability (HiNA), and automatically switches to a power-saving Network
Standby mode within 1 minute of no packets being transmitted. It can also be turned o through a power switch to save energy when it is not
needed.
Network Standby: 5.82 watts
Switched O: 0.08 watts
Preface
Revision Date Description
1.00 February 4, 2016 Initial release
1.01 May 31, 2016 Added Wireless Extender Mode

iiD-Link DIR-879 User Manual
Table of Contents
Table of Contents
Product Overview..............................................................1
Package Contents.........................................................................1
System Requirements.................................................................2
Introduction ................................................................................... 3
Features............................................................................................ 5
Hardware Overview.....................................................................6
LED Indicator.......................................................................... 6
Back Panel ...............................................................................7
Choosing an Operation Mode .......................................... 8
Router Mode .................................................................................. 9
Extender Mode............................................................................10
Wireless Extender ...............................................................11
Access Point..........................................................................12
Installation - Router.........................................................13
Before you Begin.........................................................................13
Wireless Installation Considerations....................................14
Hardware Setup ..........................................................................15
Completing Setup......................................................................18
QRS Mobile App..................................................................19
Setup Wizard ........................................................................24
Installation - Wireless Extender......................................28
Before you Begin.........................................................................28
Wireless Installation Considerations....................................29
Hardware Setup ..........................................................................30
Connect to an Uplink Network using the Setup
Wizard.....................................................................................31
Installation - Access Point ...............................................37
Before you Begin.........................................................................37
Wireless Installation Considerations....................................38
Hardware Setup ..........................................................................39
Conguration - Router Mode..........................................41
Home ..............................................................................................42
Internet...................................................................................42
DIR-879...................................................................................43
Connected Clients..............................................................44
Settings ..........................................................................................45
Wizard.....................................................................................45
Internet...................................................................................45
IPv6 .....................................................................................55
Wireless ..................................................................................72
Guest Zone.......................................................................75
Network..................................................................................76
Features..........................................................................................78
QoS Engine............................................................................78
Firewall Settings..................................................................79
IPv4/IPv6 Rules ...............................................................81
Port Forwarding ..................................................................82
Virtual Server...................................................................83
Website Filter........................................................................84
Static Routes.........................................................................85
IPv6 .....................................................................................86

iiiD-Link DIR-879 User Manual
Table of Contents
Dynamic DNS .......................................................................87
IPv6 Host...........................................................................88
Management................................................................................89
Time & Schedule .................................................................89
Time....................................................................................89
Schedule ...........................................................................90
System Log............................................................................91
Admin .....................................................................................93
System ...............................................................................94
Upgrade .................................................................................95
Statistics.................................................................................96
Conguration - Extender Mode......................................97
Settings ..........................................................................................97
Home ..............................................................................................98
DIR-879...................................................................................99
Connected Clients........................................................... 100
Extender.............................................................................. 101
Network............................................................................... 104
Management............................................................................. 105
Time & Schedule .............................................................. 105
Time................................................................................. 105
Schedule ........................................................................ 106
System Log......................................................................... 107
Admin .................................................................................. 109
System ............................................................................ 110
Upgrade .............................................................................. 111
Connect a Wireless Client to your Router ....................112
WPS Button................................................................................ 112
Windows® 10............................................................................. 113
Windows® 8................................................................................ 115
WPA/WPA2 ......................................................................... 115
Windows® 7................................................................................ 117
WPA/WPA2 ......................................................................... 117
WPS....................................................................................... 120
Windows Vista®......................................................................... 124
WPA/WPA2 ......................................................................... 125
Troubleshooting............................................................127
Wireless Basics...............................................................131
What is Wireless?...................................................................... 132
Tips................................................................................................ 134
Wireless Modes......................................................................... 135
Networking Basics.........................................................136
Check your IP address............................................................ 136
Statically Assign an IP address............................................ 137
Wireless Security ......................................................... 138
What is WPA? ................................................................ 138
Technical Specications................................................139
Regulatory Statements .................................................140

1D-Link DIR-879 User Manual
Section 1 - Product Overview
Product Overview
Package Contents
Note: Using a power supply with a dierent voltage rating than the one included with the DIR-879 will cause damage and void the warranty
for this product.
If any of the above items are missing, please contact your reseller.
DIR-879 AC1900 Wi-Fi Router
Ethernet Cable
Power Adapter
Wi-Fi Conguration Card
Wall-Mount Hardware
Wi-Fi Conguration Note

2D-Link DIR-879 User Manual
Section 1 - Product Overview
Network Requirements
• An Ethernet-based cable or DSL modem
• IEEE 802.11ac/n/g/b/a wireless clients
• 10/100 Ethernet
Web-based Conguration
Utility Requirements
Computer with the following:
• Windows®, Macintosh, or Linux-based operating system
• An installed Ethernet adapter
Browser Requirements:
• Internet Explorer 10 or higher
• Firefox 28 or higher
• Safari 6 or higher
• Chrome 28 or higher
Windows®Users: Make sure you have the latest version of Java
installed. Visit www.java.com to download the latest version.
QRS Mobile Requirements • iPhone®/iPad®/iPod Touch® (iOS 7.0 or higher)
• Android™ device (2.3.3 or higher)
System Requirements

3D-Link DIR-879 User Manual
Section 1 - Product Overview
Introduction
The D-Link DIR-879 AC1900 Wi-Fi Router shares your Internet connection over a blazing-fast Gigabit Wireless AC connection of
up to 1900 Mbps (Up to 1300 Mbps 5 GHz Wireless AC and up to 600 Mbps 2.4 GHz Wireless N)1, using advanced AC technology
to maximize the speed and range of your wireless signal. Equipped with one Gigabit WAN/Internet port and four Gigabit LAN
ports to provide speeds up to 10 times faster than standard 10/100 ports, the DIR-879 creates the best networking experience
to date. With the addition of advanced Quality of Service (QoS), data streams are separated, which helps organize and prioritize
your network trac so your computers, game consoles, 3D/4K video streaming, gaming, and VoIP calls run smoother over both
your wired and wireless network.
The DIR-879 features the strongest and most sensitive wireless radio we’ve ever built, oering four times the power of a typical
wireless router2, letting you blanket large areas or multi-story buildings with Wi-Fi. The DIR-879’s superior design allows you
to enjoy full motion, high denition video calls on your mobile device while moving. Featuring a 3 x 4 Multiple In Multiple
Out (MIMO) antenna, the DIR-879 oers better data rates, fewer dead-spots, more coverage, and higher reliability. Operating
exclusively in the 5 GHz band, the DIR-879's 802.11ac wireless connections avoid crowded the 2.4 GHz band trac, allowing
you faster speeds while still maintaining backwards compatibility with older 802.11n/g/b devices. The DIR-879 prepares your
home to become a Connected Home by bringing Wi-Fi to places your old signal can’t reach. A stronger Wi-Fi signal means you
can install more wireless surveillance cameras, baby monitors, sensors, and alarms in the places where you need them.
The versatile DIR-879 can assist you in solving your unique networking challenges thanks to its mode switch. In router mode,
the DIR-879 operates as a traditional router, sharing your Internet connection. In extender mode, the DIR-879 connects and
works with your existing networking equipment to extend the range and enhance the capabilities of your home or oce
network. This means you can bring Wi-Fi to places where your current signal doesn't reach, letting you go from room to room,
oce to oce, oor to oor, or yard to yard without losing signal.
The DIR-879's Smart Connect Technology makes connecting to wireless networks easy by eliminating the confusion of multiple
networks. Ever since the introduction of 5 GHz multi-band wireless technology, users have had to guess whether the 5 GHz or
2.4 GHz band network would provide them with better range and speed. Smart Connect simplies this by only presenting a
single wireless network for the user to connect to. Behind the scenes, when a connection is initiated, the DIR-879's advanced
algorithms determine the best band for your device to connect to, automatically distributing devices to the optimal speed and
band, thereby ensuring a faster, more reliable, and hassle-free experience for all of your users and devices.

4D-Link DIR-879 User Manual
Section 1 - Product Overview
The DIR-879 supports the latest wireless security features to help prevent unauthorized access, be it from over a wireless
network or the Internet. Support for WPA™ and WPA2™ standards ensure that you will be able to use the best possible
encryption regardless of your client devices. In addition, this router is equipped with a dual-active rewall (SPI and NAT) to
prevent potential attacks over the Internet.
D-Link Intelligent QoS Technology helps to increase network eciency by analyzing network trac and prioritizing it in order
of importance. This way, two-way video, voice chat, and online gaming take priority over background network trac such as a
le downloads, ensuring you have optimal network performance.
The DIR-879 supports the latest wireless security features to help prevent unauthorized access, be it from over a wireless
network or the Internet. Support for WPA™ and WPA2™ standards ensure that you will be able to use the best possible
encryption regardless of your client devices. In addition, this router is equipped with a dual-active rewall (SPI and NAT) to
prevent potential attacks over the Internet.
1 Maximum wireless signal rate derived from IEEE Standard 802.11a, 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.
2 Determined by FCC regulation. Maximum wireless transmission power output is subject to regional radio frequency guidelines.
Introduction (continued)

5D-Link DIR-879 User Manual
Section 1 - Product Overview
• Superior Wireless Networking - The DIR-879 provides Gigabit wireless speeds of up to a combined 1900 Mbps
(1300 Mbps 802.11ac 5 GHz, plus 600 Mbps 802.11n 2.4 GHz)1. This capability rivals wired connections, allowing
users to participate in real-time activities online, such as HD video communication, online gaming, and use
mobile devices from anywhere in your home while still oering full 802.11n/g/b backward compatibility.
• Extreme Wired LAN and WAN Networking - With four 10/100/1000 Gigabit Ethernet LAN ports, and a
10/100/1000 Gigabit Ethernet WAN port, the DIR-879 has an enormous amount of bandwidth to take full
advantage of the highest speed broadband connections available. Powered by a 1.0 GHz Dual Core CPU, the
DIR-879 has the brains and the power to simultaneously stream multiple HD videos to set top boxes and mobile
devices, participate in online gaming with consoles or PCs, run a cloud-enabled home surveillance system, and
copy massive les without slowdowns, lag, or stuttering.
• Smart Connect - Creates a 'single' wireless network for your devices to connect to. Behind the scenes, the
DIR-879 automatically determines whether to connect a device to the 2.4 or 5 GHz band, thereby providing the
best speed and range for each device and optimally distributing devices to each network.
• Advanced Firewall Features - The web-based user interface displays a number of advanced network
management features. Easily apply content ltering based on MAC address, URL, and/or domain name.
Schedule these lters to be active on certain days or for a duration of hours or minutes.
• Secure Multiple/Concurrent Sessions - The DIR-879 can pass through VPN sessions. It supports multiple and
concurrent IPSec and PPTP sessions, so users behind the DIR-879 can securely access corporate networks.
• User-friendly Setup Wizard - Through its easy-to-use web-based user interface or QRS Mobile (Quick Router
Setup) App, the DIR-879 lets you quickly congure and secure your router to your specic settings in minutes.
• Router or Extender Mode - With the ick of a switch, you can easily set up your DIR-879 to operate as the core
device of your network in Router Mode, or add your DIR-879 to an existing network using Extender Mode using
Ethernet.
1 Maximum wireless signal rate derived from IEEE Standard 802.11a, 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

6D-Link DIR-879 User Manual
Section 1 - Product Overview
Hardware Overview
LED Indicator
1 Power LED
Solid White A solid white light indicates that the device is powered on, healthy, and connected to the Internet (Router
Mode) or Uplink Router (Extender Mode).
Solid Orange A solid orange light indicates that the device is booting, undergoing a factory reset, or not connected to the
Internet (Router Mode) or Uplink Router (Extender Mode).
Blinking Orange A blinking orange light indicates that the device is in recovery mode.
Blinking White A blinking white light indicates that the WPS search mode is active.
1

7D-Link DIR-879 User Manual
Section 1 - Product Overview
Hardware Overview
Back Panel
1 Reset Button To reset the device to its factory default settings, use a paper clip press and hold the reset button for 3 seconds.
2 WPS Press to start the WPS process and automatically create a secure connection to a WPS client.
3 LAN Ports (1-4) Connect 10/100/1000 Ethernet devices such as computers, switches, storage (NAS) devices, and game consoles.
4 Internet Port Using an Ethernet cable, connect your broadband modem to this port.
5 Power Connector Connector for the supplied power adapter.
6 Power Button Press the power button to power the DIR-879 on and o.
7 Mode Switch Select between Router and Extender modes.To change modes, move the switch to the desired position and after
5 seconds the router will reboot into the desired mode. Router is the default mode.
3 4 5 6 721

8D-Link DIR-879 User Manual
Section 2 - Choosing an Operation Mode
Choosing an Operation Mode
The DIR-879 is equipped with a mode switch to give you more exibility in how to congure your network. You may select
either Router Mode or Extender Mode.
• Router Mode shares your Internet connection. This is the factory default setting suitable for most users.
• Extender Mode extends your existing network.
Determine your desired type of operation and adjust the mode switch before you begin your installation.
The following pages contain information about the DIR-879's operation modes to help you determine how you wish to use it.
This information includes usage scenarios, cable diagrams, and network conguration information.
Note: If the mode switch is adjusted while powered on, the DIR-879 will reboot into the new mode after ve seconds.

9D-Link DIR-879 User Manual
Section 2 - Choosing an Operation Mode
Router Mode
In Router Mode, the DIR-879 AC1900 Wi-Fi Router operates as the central device of your network. This is the most common
type of installation and is the factory default mode switch setting suitable for most users. The DIR-879 connects to your cable
modem, DSL modem, or other Internet source and shares your Internet connection with your wired and wireless devices.
Create a Home Network (Router Mode)
Use this mode for:
• Setting up a network for the rst time.
• Replacing an existing router or network equipment.
• Adding a router to share a broadband connection which was previously connected to a single computer.
Place your DIR-879 near your Broadband Internet Connection Device (e.g. DSL/Cable Modem) and connect to it via Ethernet
cable.
To use your DIR-879 as a Router, refer Installation - Router on page 13.
Wired and Wireless DevicesBroadband
Connection Device
(e.g. DSL/Cable Modem)
Internet DIR-879

10D-Link DIR-879 User Manual
Section 2 - Choosing an Operation Mode
Existing Wi-Fi Range Wi-Fi Range with DIR-879
What is an Wireless Extender?
In Extender mode, the DIR-879 works with your existing networking equipment to provide Wi-Fi for parts of your home or
oce that may have poor or no reception. It works as a Wireless Extender by connecting to your existing wireless network
and creates a new wireless network for your devices to connect to. This extended wireless network can use the same wireless
network password as the existing wireless network, or you can specify a dierent password, giving you the exibility to control
network access. You may also use the DIR-879 as a wireless Access Point by connecting it to an uplink network via an Ethernet
cable. This can be useful if you already have an existing router without built-in wireless capabilities or if your existing wireless
signal can’t bridge the distance. Devices connected to the DIR-879 obtain IP addresses from the existing uplink network.
Place the DIR-879 in an area where you wish to get Wi-Fi, but is reachable by wireless signals or an Ethernet cable from your
uplink network.
Extender Mode

11D-Link DIR-879 User Manual
Section 2 - Choosing an Operation Mode
The DIR-879 operates as a Wireless Extender when the mode switch is in the Extender position and it is connected wirelessly
to an uplink network.
Wireless Extender
Extend Your Wireless Network using Wi-Fi
Use this mode for:
• Extending your current network.
• Bringing Wi-Fi to an area it doesn't currently reach.
• Providing better signal for parts of your home or oce that may have poor reception.
• Connecting wired Ethernet devices which do not have a built-in wireless, such as smart TVs, game consoles, or DVRs.
• Networking areas where cables are impractical.
Note: Extending by Wi-Fi reduces the total available amount of wireless bandwidth available.
To use your DIR-879 as a Wireless Extender, refer to Installation - Wireless Extender on page 28.
Use the DIR-879's Wireless Extender Mode's built in web UI Setup Wizard to connect to an uplink network
Wired and Wireless DevicesBroadband
Connection Device
(e.g. DSL/Cable Modem)
Existing
Network
Internet DIR-879

12D-Link DIR-879 User Manual
Section 2 - Choosing an Operation Mode
Access Point
Create a Wireless Network using Ethernet
The DIR-879 operates as an Access Point when the mode switch is in the Extender position and an Ethernet cable is
connected from an Ethernet Port to an uplink network.
Use this mode for:
• Extending your current network.
• Providing better signal for parts of your home or oce that may have poor reception.
• Bringing Wi-Fi to an area it doesn't currently reach.
• Adding Wi-Fi to a wired network.
• Maximizing bandwidth.
• Creating a Wi-Fi pocket away from your existing network.
Note: Extending a network to a desired location via Ethernet may require additional cable. The maximum length of Category
5/5E cables is limited to 100 meters (330 feet). Use a Gigabit-capable Ethernet connection where possible to ensure the best
networking experience.
To use your DIR-879 as an Access Point, refer to Installation - Access Point on page 37.
Broadband
Connection Device
(e.g. DSL/Cable Modem)
Existing
Network
Internet Wired and Wireless DevicesDIR-879

13D-Link DIR-879 User Manual
Section 3 - Installation - Router
Before you Begin
• Placement of the router is very important. Do not place the router in an enclosed area such as a closet, cabinet,
attic, or garage.
• Congure the router with the computer that was last connected directly to your Internet connection. Verify that it
is connected to the Internet before connecting additional devices.
• If your ISP provided you with a modem/router combo, you will need to set it to“bridge”mode so the router can
work properly. Please contact your ISP or refer to the user manual for your modem/router device.
• You can only use the Ethernet port on your modem. If you were using the USB connection before using the router,
then you must turn o your modem, disconnect the USB cable and connect an Ethernet cable to the Internet
port on the router, and then turn the modem back on. In some cases, you may need to call your Internet Service
Provider (ISP) to change connection types (USB to Ethernet).
• If connecting to a DSL modem, 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 might be necessary to establish a connection.
• 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.
• If you have DSL and are connecting via PPPoE, make sure you disable or uninstall any PPPoE software such as
WinPoET, BroadJump, or EnterNet 300 from your computer or you will not be able to connect to the Internet.
This section will walk you through the installation of the DIR-879 as a router using Router Mode.
Installation - Router

14D-Link DIR-879 User Manual
Section 3 - Installation - Router
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 3-90 feet (1-30 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 thick (0.5 meters), 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 3-6 feet or 1-2 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.

15D-Link DIR-879 User Manual
Section 3 - Installation - Router
2. Inspect the mode switch to ensure that it is in the factory default ROUTER position. Adjust the switch if necessary.
1. The DIR-879 is designed to give you the fastest, most stable network connection possible. In order to maximize
performance, fully extend the antennas to provide optimal wireless coverage. Keep the router in an open area for better
wireless coverage.
3. Position your DIR-879 near your Internet-connected modem. Place it in an open area for better wireless coverage.
DIR-879 Modem
Hardware Setup
115°
DIR-879

16D-Link DIR-879 User Manual
Section 3 - Installation - Router
5. Use the included Ethernet cable to connect your modem to the yellow port labeled INTERNET on the router.
6. Turn on or plug your modem back in and wait approximately one minute before proceeding onward.
DIR-879
Modem
DIR-879
Modem
4. Turn o and unplug the power and Ethernet cable to your cable or DSL broadband modem. This is required. In some
cases, you may need to turn it o for up to ve minutes.
DIR-879
Modem