D-Link DSL-2875AL User manual

DSL-2875AL
User Manual

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Table of Contents
Page 2
Table of Contents
Table of Contents................................................................................................... 2
Product Overview................................................................................................... 3
Package Contents ................................................................................................ 3
System Requirements.......................................................................................... 3
Features................................................................................................................ 4
Hardware Overview.............................................................................................. 5
Front Panel ....................................................................................................... 5
Rear Panel........................................................................................................ 6
Basic Installation.................................................................................................... 7
Before You Begin ................................................................................................. 7
Installation Notes.................................................................................................. 7
Information you will need from your ADSL service provider............................. 9
Information you will need about this Router.................................................... 10
Information you will need about your LAN or computer.................................. 10
Device Installation .............................................................................................. 11
Power on Router............................................................................................. 11
Factory Reset Button...................................................................................... 11
Network Connections...................................................................................... 12
Getting Started ................................................................................................... 13
How to connect to the Web User Interface..................................................... 13
Web User Interface Configuration...................................................................... 14
Setup Category................................................................................................... 15
Wizard............................................................................................................. 16
Internet Setup ................................................................................................. 24
Wireless Setup................................................................................................ 29
LAN Setup....................................................................................................... 42
Time and Date ................................................................................................ 44
MydlinkTM Settings .......................................................................................... 45
Advanced Category............................................................................................ 46
Advanced Wireless......................................................................................... 47
Virtual Server .................................................................................................. 53
Port Trigger..................................................................................................... 55
DMZ ................................................................................................................ 56
Parental Control.............................................................................................. 57
IP & MAC Filtering .......................................................................................... 58
DSL Line Settings........................................................................................... 59
Firewall............................................................................................................ 60
DNS................................................................................................................. 61
Dynamic DNS ................................................................................................. 62
Network Tools................................................................................................. 63
Routing............................................................................................................ 69
URL Redirect .................................................................................................. 72
Maintenance Category ....................................................................................... 74
Administrator................................................................................................... 75
Access Control................................................................................................ 76
System Settings.............................................................................................. 78
Firmware Update ............................................................................................ 80
Diagnostics ..................................................................................................... 81
System Log..................................................................................................... 83
Status Category.................................................................................................. 85
Device Info...................................................................................................... 86
System Log..................................................................................................... 90
Statistics.......................................................................................................... 92
Help Category..................................................................................................... 94
Knowledge Base .................................................................................................. 95
Networking Basics.............................................................................................. 95
Wireless Basics .................................................................................................. 97
Wireless Modes .............................................................................................. 99
Wireless Security................................................................................................ 99
What is WPA?................................................................................................. 99
Frequently Asked Questions ............................................................................ 101
Technical Specifications ................................................................................... 102

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Product Overview
Page 3
Product Overview
Package Contents
This product should contain all of the below mentioned items within its packaging:
One DSL-2875ALWireless ADSL2+ Router
One Power Adapter
One CD containing the User Manual
One twisted-pair telephone cable used for DSL connection
One straight-through Ethernet cable
One Quick Installation Guide
If any of the above items are missing, please contact your reseller.
Note: Using a power supply with a different voltage rating than the one included with
the DSL-2875AL will cause damage to this product and void the warranty for this
product.
System Requirements
Network Requirements:
Ethernet Adapter at 10/100/1000Mbps.
Wireless Adapter with IEEE 802.11n, 802.11a, or 802.11b/g Protocols.
Web User Interface Requirements:
Windows®, Macintosh, or Linux-based Operating System.
Internet Browser like Internet Explorer 7 or higher, Firefox 3.5 or higher,
Safari 4 or higher, or Chrome 8 or higher.
Internet Requirements:
ADSL Internet Connection Service from an ISP.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Product Overview
Page 4
Features
Faster Wireless Networking - The DSL-2875AL provides up to 300Mbps* for the 2.4GHz band and 450Mbps* for the 5GHz band wireless connection with other 802.11n
wireless clients. This capability allows users to participate in real-time activities online, such as video streaming, online gaming, and real-time audio.
Compatible with 802.11b and 802.11g Devices - The DSL-2875AL is still fully compatible with the IEEE 802.11b and IEEE 802.11g standards, so it can connect with
existing 802.11b and 802.11g PCI, USB and Cardbus adapters.
DHCP Support - Dynamic Host Configuration Protocol automatically and dynamically assigns all LAN IP settings to each host on your network. This eliminates the need
to reconfigure every host whenever changes in network topology occur.
Network Address Translation (NAT) - For small office environments, the DSL-2875AL allows multiple users on the LAN to access the Internet concurrently through a
single Internet account. This provides Internet access to everyone in the office for the price of a single user. NAT improves network security in effect by hiding the private
network behind one global and visible IP address. NAT address mapping can also be used to link two IP domains via a LAN-to-LAN connection.
Precise ATM Traffic Shaping - Traffic shaping is a method of controlling the flow rate of ATM data cells. This function helps to establish the Quality of Service for ATM
data transfer.
High Performance - Very high rates of data transfer are possible with the router. Up to 24Mbps downstream bit rate using the G.dmt standard. (For ADSL2+)
Full Network Management - The DSL-2875AL incorporates SNMP (Simple Network Management Protocol) support for web-based management and text-based network
management via a Telnet connection.
Easy Installation - The DSL-2875AL uses a web-based graphical user interface program for convenient management access and easy set up. Any common web
browsing software can be used to manage this router.
Maximum wireless signal rate derived from IEEE standard 802.11n specifications. Actual data throughput will vary. Network conditions and environmental factors, including volume of network traffic, building
materials and construction, and network overhead, lower actual data throughput rate. Environmental factors will adversely affect wireless signal range.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Product Overview
Page 5
Hardware Overview
Front Panel
Number
Description
WPS - The light will flash while a WPS connection is being established. The light
will light solid for 5 seconds if a successful WPS connection has been made.
This is also the WPS button used to initiate the push-button WPS connection.
Internet - Steady green light indicates a successful Internet connection. Steady
red light indicates failed Internet connection. Dark if no WAN protocol is
configured.
DSL - Steady green light indicates a valid ADSL connection. This will light after
the ADSL negotiation process has been settled. A blinking green light indicates
activity on the WAN (ADSL) interface.
2.4GHz WLAN - Steady green light indicates the 2.4GHz WLAN is available.
5GHz WLAN - Steady green light indicates the 5GHz WLAN is available.
LAN - A solid light indicates a valid link on startup. This light will blink when there
is activity currently passing through the Ethernet port. A green light will be
illuminated for a 10/100Mbps connection.
Power - A steady green light indicates the unit is powered on. When the device
is powered off this remains dark. During the Power-On Self-Test this light will be
red. If this light remains red after the POST, a malfunction has occurred.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Product Overview
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Rear Panel
Object
Description
Power
Button -
Push in to
power-on
the router.
Push again
to power-
off the
router.
Power
Receptor
- Receptor
for the
supplied
power
adapter.
Ethernet
Ports - Use
the Ethernet
ports to
connect the
router to your
Ethernet LAN
or Ethernet
devices.
Reset
Button -
Press
and hold
the button
for 10-15
seconds
to restore
the
device to
its
original
factory
default
settings.
WPS Button
–If you use
a Wi-Fi
router
compatible
with WPS,
press the
WPS button
to
automatically
configure the
connection
settings and
security
settings.
ADSL Port
- Use the
DSL cable
to connect
to your
telephone
line (RJ-11
port).

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Basic Installation
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Basic 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, or
in the attic or garage.
Before You Begin
Please read and make sure you understand all the prerequisites for proper installation of your new router. Have all the necessary information and equipment on hand before
beginning the installation.
Installation Notes
In order to establish a connection to the Internet it will be necessary to provide information to the router that will be stored in its memory. For some users, only their account
information (Username and Password) is required. For others, various parameters that control and define the Internet connection will be required.
Low Pass Filters
Since ADSL and telephone services share the same copper wiring to carry their respective signals, a filtering mechanism may be necessary to avoid mutual interference. A
low pass filter device can be installed for each telephone that shares the line with the ADSL line. These filters are easy to install passive devices that connect to the ADSL
device and/or telephone using standard telephone cable. Ask your service provider for more information about the use of low pass filters with your installation.
Operating Systems
The DSL-2875AL uses an HTML-based web interface for setup and management. The Web configuration manager may be accessed using any operating system capable of
running web browser software, including Windows®, Macintosh, and Linux-based Operating Systems.
Web Browser
Any common Web browser can be used to configure the router using the Web configuration management software. The program is designed to work best with more recently
released browsers such as Internet Explorer 7 or higher, Firefox 3.5 or higher, Safari 4 or higher, or Chrome 8 or higher.. The Web browser must have JavaScript enabled.
JavaScript is enabled by default on many browsers. Make sure JavaScript has not been disabled by other software (such as virus protection or web user security packages)
that may be running on your computer.
Ethernet Port (NIC Adapter)
Any computer that uses the router must be able to connect to it through one of the Ethernet ports on the router. This connection is an Ethernet connection and therefore
requires that your computer be equipped with an Ethernet port as well. Most notebook computers are now sold with an Ethernet port already installed. Likewise, most fully
assembled desktop computers come with an Ethernet adapter as standard equipment. If your computer does not have an Ethernet port, you must install an Ethernet NIC
adapter before you can use the router. If you must install an adapter, follow the installation instructions that come with the Ethernet NIC adapter.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Basic Installation
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Additional Software
It may be necessary to install software on your computer that enables the computer to access the Internet. Additional software must be installed if you are using the device a
simple bridge. For a bridged connection, the information needed to make and maintain the Internet connection is stored on another computer or gateway device, not in the
router itself.
If your ADSL service is delivered through a PPPoE or PPPoA connection, the information needed to establish and maintain the Internet connection can be stored in the
router. In this case, it is not necessary to install software on your computer. It may however be necessary to change some settings in the device, including account information
used to identify and verify the connection.
All connections to the Internet require a unique global IP address. For bridged connections, the global IP settings must reside in a TCP/IP enabled device on the LAN side of
the bridge, such as a PC, a server, a gateway device such as a router or similar firewall hardware. The IP address can be assigned in a number of ways. Your network
service provider will give you instructions about any additional connection software or NIC configuration that may be required.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Basic Installation
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Information you will need from your ADSL service provider
Username
This is the Username used to log on to your ADSL service provider’s network. Your ADSL service provider uses this to identify your account.
Password
This is the Password used, in conjunction with the Username above, to log on to your ADSL service provider’s network. This is used to verify the identity of your account.
WAN Setting / Connection Type
These settings describe the method your ADSL service provider uses to transport data between the Internet and your computer. Most users will use the default settings. You
may need to specify one of the following WAN Setting and Connection Type configurations (Connection Type settings listed in parenthesis):
PPPoE/PPPoA (PPPoE LLC, PPPoE VC-Mux, PPPoA LLC or PPPoA VC-Mux)
Static IP Address (1483 Routed IP LLC or 1483 Routed IP VC-Mux)
Bridge Mode (1483 Bridged IP LLC or 1483 Bridged IP VC Mux)
Modulation Type
ADSL uses various standardized modulation techniques to transmit data over the allotted signal frequencies. Some users may need to change the type of modulation used for
their service. The default DSL modulation (Autosense) used for the router automatically detects all types of ADSL, ADSL2, and ADSL2+ modulation.
Security Protocol
This is the method your ADSL service provider will use to verify your Username and Password when you log on to their network. Your router supports the PAP and CHAP
protocols.
VPI
Most users will not be required to change this setting. The Virtual Path Identifier (VPI) is used in conjunction with the Virtual Channel Identifier (VCI) to identify the data path
between your ADSL service provider’s network and your computer. If you are setting up the router for multiple virtual connections, you will need to configure the VPI and VCI
as instructed by your ADSL service provider for the additional connections. This setting can be changed in the WAN Settings window of the web management interface.
VCI
Most users will not be required to change this setting. The Virtual Channel Identifier (VCI) used in conjunction with the VPI to identify the data path between your ADSL
service provider’s network and your computer. If you are setting up the router for multiple virtual connections, you will need to configure the VPI and VCI as instructed by your
ADSL service provider for the additional connections. This setting can be changed in the WAN Settings window of the web management interface.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Basic Installation
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Information you will need about this Router
Username
This is the Username needed access the router’s web management interface. When you attempt to connect to the device through a web browser you will be prompted to
enter this Username. The default Username for the router is “admin”.
Password
This is the Password you will be prompted to enter when you access the router’s web management interface. The default Password is “admin”.
LAN IP Addresses for the DSL-2875AL
This is the IP address you will enter into the Address field of your web browser to access the router’s configuration Graphical User Interface (GUI) using a web browser. The
default IP address is 192.168.1.1. This may be changed to suit any IP address scheme the user desires. This address will be the base IP address used for DHCP service on
the LAN when DHCP is enabled.
LAN Subnet Mask for the DSL-2875AL
This is the subnet mask used by the DSL-2875AL, and will be used throughout your LAN. The default subnet mask is 255.255.255.0. This can be changed later.
Information you will need about your LAN or computer
Ethernet NIC
If your computer has an Ethernet NIC, you can connect the DSL-2875AL to this Ethernet port using an Ethernet cable. You can also use the Ethernet ports on the DSL-
2875AL to connect to other computer or Ethernet devices.
DHCP Client status
Your DSL-2875AL ADSL router is configured, by default, to be a DHCP server. This means that it can assign an IP address, subnet mask, and a default gateway address to
computers on your LAN. The default range of IP addresses the DSL-2875AL will assign are from 192.168.1.2 to 192.168.1.254. Your computer (or computers) needs to be
configured to obtain an IP address automatically (that is, they need to be configured as DHCP clients.)
Once you have the above information, you are ready to setup and configure your DSL-2875AL ADSL router.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Basic Installation
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Device Installation
The DSL-2875AL connects two separate physical interfaces, an ADSL (WAN) and an Ethernet (LAN) interface. Place the router in a location where it can be connected to the
various devices as well as to a power source. The router should not be located where it will be exposed to moisture or excessive heat. Make sure the cables and power cord
are placed safely out of the way so they do not create a tripping hazard. As with any electrical appliance, observe common sense safety procedures.
The router can be placed on a shelf or desktop, ideally you should be able to see the LED indicators on the front if you need to view them for troubleshooting.
Power on Router
The router must be used with the power adapter included with the device.
1. Insert the AC Power Adapter cord into the power receptacle located on the rear panel of the router and plug the adapter into a suitable nearby power source.
2. Press the Power button into the on position. You should see the Power LED indicator light up and remain lit.
3. If the Ethernet port is connected to a working device, check the Ethernet LED indicators to make sure the connection is valid. The router will attempt to establish the
ADSL connection, if the ADSL line is connected and the router is properly configured this should light up after several seconds. If this is the first time installing the
device, some settings may need to be changed before the router can establish a connection.
Factory Reset Button
The router may be reset to the original factory default settings by using a ballpoint pen or paperclip to gently push down the reset button in the following sequence:
1. Press and hold the reset button while the device is powered on for 45-60 seconds.
2. Hold the reset button for 5-8 seconds and release the reset button.
Remember that this will wipe out any settings stored in flash memory including user account information and LAN IP settings. The device settings will be restored to the
factory default IP address 192.168.1.1 and the subnet mask is 255.255.255.0. The default management username is “admin” and the default password is “admin”.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Basic Installation
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Network Connections
Connect ADSL Line
Use the ADSL cable included with the router to connect it to a telephone wall socket or receptacle. Plug one end of the cable into the ADSL port (RJ-11 receptacle) on the
rear panel of the router and insert the other end into the RJ-11 wall socket. If you are using a low pass filter device, follow the instructions included with the device or given to
you by your service provider. The ADSL connection represents the WAN interface, the connection to the Internet. It is the physical link to the service provider’s network
backbone and ultimately to the Internet.
Connect Router to Ethernet
The router may be connected to a single computer or Ethernet device through the Ethernet ports on the rear panel. Any connection to an Ethernet concentrating device such
as a switch or hub must operate at a speed of 10/100/1000Mbps. When connecting the router to any Ethernet device that is capable of operating at speeds higher than
10Mbps, be sure that the device has auto-negotiation (NWay) enabled for the connecting port. Use standard twisted-pair cable with RJ-45 connectors. The RJ-45 ports on the
router are a crossed port (MDI-X). Follow standard Ethernet guidelines when deciding what type of cable to use to make this connection. When connecting the router directly
to a PC or server use a normal straight-through cable. You should use a crossed cable when connecting the router to a normal (MDI-X) port on a switch or hub. Use a normal
straight-through cable when connecting it to an uplink (MDI-II) port on a hub or switch. The rules governing Ethernet cable lengths apply to the LAN to router connection. Be
sure that the cable connecting the LAN to the router does not exceed 100 meters.
Hub or Switch to Router Connection
Connect the router to an uplink port (MDI-II) on an Ethernet hub or switch with a straight-through cable. If you wish to reserve the uplink port on the switch or hub for another
device, connect to any on the other MDI-X ports (1x, 2x, etc.) with a crossed cable.
Computer to Router Connection
You can connect the router directly to an Ethernet adapter card (NIC) installed on a PC using the Ethernet cable provided.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Basic Installation
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Getting Started
This section will show you how to set up and configure your new D-Link router using the Web-based configuration utility.
How to connect to the Web User Interface
Connect to the Router
To configure the WAN connection used by the router it is first necessary to communicate with the router through its management interface, which is HTML-based and can be
accessed using a web browser. The easiest way to make sure your computer has the correct IP settings is to configure it to use the DHCP server in the router.
To access the web user interface, open a web-browser such as Internet Explorer and
enter the IP address of the router (192.168.1.1) into the address bar and press the
Enter key on your keyboard.
Type “admin” in the User Name field and “admin” in the Password field, and click the
Login button to proceed. If you get a Page Cannot be Displayed error, please refer to
the Troubleshooting section for assistance.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Web User Interface Configuration
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Web User Interface Configuration
After successfully logging into the Web User Interface, the following page will be displayed. This page is divided into clickable components that make the configuration of this
device easier and more understandable.
The top menu lists out the Categories available for configuration. The
categories available to configure on this device are Setup,Advanced,
Maintenance,Status and Help.
The left menu lists out the Pages available, for each individual category, for
configuration. In this example, we observe the pages available in the Setup
category. The pages available here are Wizard, Internet Setup, Wireless
Setup, LAN Setup, Time and Date, and MydlinkTM Settings.
At the Bottom is the Reboot Button which will restart the router.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Web User Interface Configuration
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Setup Category
The Setup category is designed to assist the user with essential configurations, concerning the initial setup of this product.
The following pages can be found in the Setup category:.
Wizard - On this page we can configure services using D-Link setup
wizard.
Internet Setup - On this page we can configure services related to the
Internet connectivity of this product.
Wireless Setup - On this page we can configure services related to
the Wireless connectivity of this product.
LAN Setup - On this page we can configure the Local Area Network
(LAN).
Time and Date - On this page we can configure services related to
time and date of this product.
MydlinkTMSettings - On this page we can configure services related to
mydlinkTMsettings of this product.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Web User Interface Configuration
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Wizard
To access the Wizard page, click on the Setup menu link, at the top, and then click on the Wizard menu link, on the left.
On this page the user can easily configure some essential settings available on this
router by following a step-by-step wizard.
Click on the Setup Wizard button to initiate the setup wizard.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Web User Interface Configuration
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Welcome to the Setup Wizard
This wizard will guide user through a step-by-step wizard, divided into 7 steps, to
configure this router and to connect to the Internet.
Click the Next button to continue to the next page.
Click the Cancel button to discard the changes made and return to the main page.
Step 1: Set Your Password
In this step, the user can configure the web user interface login password. Enter the
Password and Verify Password here.
Click the Prev button to discard the changes made and return to the previous page.
Click the Next button to continue to the next page..
Click the Cancel button to discard the changes made and return to the main page.
Click the Connect button to connect to the internet.
Step 2: Select Your Time Zone
In this step the user can configure the time zone settings that will be used by this
router.
Click the Prev to return to the previous page
Click the Next to continue to the next page
Click the Cancel to cancel the setup wizard
Click the Connect button to connect to the internet.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Web User Interface Configuration
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Step 3: Setup Internet Connection
In this step, the user can configure the Internet connection settings used by this
router.
In this section we can configure the following parameters.
Country: In this drop-down menu, the user can select one of two country options.
They are Australia and New Zealand. To manually configure this connection,
the user can choose the third option called Other.
Internet Service Provider: After selecting a country, in the previous option, a list of
ISP connections will be available here. If your ISP is in the list, select it here
and the correct parameters will be entered for the rest of the page. However, if
your ISP is not listed here, you can choose the Other option.
Protocol: Select the appropriate protocol to use here. Options to choose from are
Dynamai IP Address, Static IP Address, PPPoE, PPPoA, and Bridge Mode.
Connection Type: Select the appropriate connection type to use here. Options to
choose from are VC-Mux and LLC.
VPI: Enter the correct Virtual Path Identifier (VPI) value for your ISP here.
VCI: Enter the correct Virtual Channel Identifier (VCI) value for your ISP here.
MTU:
Click the Prev button to discard the changes made and return to the previous
page.
Click the Next button to continue to the next page.
Click the Cancel button to discard the changes made and return to the main page.
Click the Connect button to connect to the internet.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Web User Interface Configuration
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On the next Page enter the PPPoE information provided to you by your ISP.
Username: After choosing to use PPPoE or PPPoA this option will be available.
Enter the ISP connection account username used here.
Password: After choosing to use PPPoE or PPPoA this option will be available.
Enter the ISP connection account password used here.
Confirm Password: After choosing to use PPPoE or PPPoA this option will be
available. Re-enter the ISP connection account username used here.
Enable PPPoE Passthrough: Enable the PPPoE passthrough.
Click the Prev to return to the previous page
Click the Next to continue to the next page
Click the Cancel to cancel the setup wizard
Click the Connect button to connect to the internet.

D-Link DSL-2870B Dual Band Wireless AC750 ADSL2+ Modem Router User Manual
Web User Interface Configuration
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Step 4: Name Your Wireless Network
In this step, the user can name your Wireless for this router.
Please enter an SSID to do so. The default name is D-Link DSL-2875AL. Please note
that the length of the 5G SSID must be between 3 and 32 alphanumeric characters
only including hyphens and spaces.
In this section we can configure the following parameters.
2.4G Wireless Network Name (SSID): In this textbox, we can enter the wireless
networks name (SSID) for the wireless network, hosted by this router. This
name will be visible for all wireless clients to see before initiating a connection
to this router.
5G Wireless Network Name (SSID): In this textbox, we can enter the wireless
networks name (SSID) for the wireless network, hosted by this router. This
name will be visible for all wireless clients to see before initiating a connection
to this router.
Click the Prev to return to the previous page
Click the Next to continue to the next page
Click the Cancel to cancel the setup wizard
Click the Connect button to connect to the internet.