D-Link DSL-2740E User manual

DSL-2740E
User Manual v1.00

Federal Communication Commission Interference Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm
between the radiator & your body.
Note: The country code selection is for non-US model only and is not available to all US model. Per FCC regulation, all WiFi product marketed in US must fixed to US operation
channels only.
Customer Information
This equipment complies with Part 68 of the FCC rules and the requirements adopted by the ACTA. On the bottom is a label that contains, among other information, a product identifier
in the format US: 3P7DL01BDSL-2740E. If requested, this number must be provided to the telephone company.
Applicable connector jack Universal Service Order Codes (“USOC”) for the Equipment is RJ11C.
A plug and jack used to connect this equipment to the premises wiring and telephone network must comply with the applicable FCC Part 68 rules and requirements adopted by the ACTA.

A compliant telephone cord and modular plug is provided with this product. It is designed to be connected to a compatible modular jack that is also compliant. See installation instructions
for details.
The REN is used to determine the number of devices that may be connected to a telephone line. Excessive RENs on a telephone line may result in the devices not ringing in response to
an incoming call. In most but not all areas, the sum of RENs should not exceed five (5.0). To be certain of the number of devices that may be connected to a line, as determined by the
total RENs, contact the local telephone company. For products approved after July 23, 2001, the REN for this product is part of the product identifier that has the format US:
3P7DL01BDSL-2740E. The digits represented by 01B are the REN without a decimal point (e.g., 03 is a REN of 0.3).
If this Wireless N300 ADSL2+ Modem Router causes harm to the telephone network, the telephone company will notify you in advance that temporary discontinuance of service may be
required. But if advance notice isn't practical, the telephone company will notify the customer as soon as possible. Also, you will be advised of your right to file a complaint with the FCC
if you believe it is necessary.
The telephone company may make changes in its facilities, equipment, operations or procedures that could affect the operation of the equipment. If this happens the telephone company
will provide advance notice in order for you to make necessary modifications to maintain uninterrupted service.
If trouble is experienced with this Wireless N300 ADSL2+ Modem Router, for repair or warranty information, please contact :
Company name: D-Link USA Inc.
Company address: 17595 Mt. Herrmann St. Fountain Valley, CA92708, USA
The customer must obtain a Case ID Number from D-Link Technical Support at 1-877-453-5465, who will attempt to assist the customer in resolving any suspected defects with the
product. If the product is considered defective, the customer must obtain a Return Material Authorization (“RMA”) number by completing the RMA form and entering the assigned Case
ID Number at https://rma.dlink.com/.
If the equipment is causing harm to the telephone network, the telephone company may request that you disconnect the equipment until the problem is resolved.
Connection to party line service is subject to state tariffs. Contact the state public utility commission, public service commission or corporation commission for information.
If your home has specially wired alarm equipment connected to the telephone line, ensure the installation of this equipment does not disable your alarm equipment. If you have questions
about what will disable alarm equipment, consult your telephone company or a qualified installer.
WHEN PROGRAMMING EMERGENCY NUMBERSAND(OR) MAKING TEST CALLS TO EMERGENCY NUMBERS:
1) Remain on the line and briefly explain to the dispatcher the reason for the call.
2) Perform such activities in the off-peak hours, such as early morning or late evenings.

Contents
SAFETY PRECAUTION...................................................................................................... 1
INTRODUCTION................................................................................................................. 1
SYSTEM REQUIREMENTS................................................................................................ 2
FEATURES ......................................................................................................................... 3
INSTALLATION.................................................................................................................. 4
BEFORE YOU BEGIN ........................................................................................................ 4
INSTALLATION NOTES..................................................................................................... 4
INFORMATION YOU WILL NEED FROM YOUR ADSL SERVICE PROVIDER................ 6
INFORMATION YOU WILL NEED ABOUT YOUR DSL-2740E ROUTER ...................... 7
INFORMATION YOU WILL NEED ABOUT YOUR LAN OR COMPUTER......................... 8
HARDWARE DESCRIPTION AND INSTALLATION........................................................... 9
LED INDICATORS .............................................................................................................. 9
BEST LOCATION FOR WIRELESS OPERATION ............................................................11
CONNECTING THE ROUTER...........................................................................................11
TCP/IP CONFIGURATION ON A PC .................................................................................13
WEB CONFIGURATION....................................................................................................14
LOGGING IN AND WIZARD..............................................................................................14
SETUP ...............................................................................................................................18
INTERNET SETUP.............................................................................................................21
WIRELESS.........................................................................................................................25
LAN INTERFACE SETTINGS............................................................................................18
DHCP SERVER..................................................................................................................19
DHCP RESERVED.............................................................................................................19
LAN IPV6 INTERFACE......................................................................................................20
TIME AND DATE................................................................................................................26
ADVANCED .......................................................................................................................27
ADVANCED WIRELESS....................................................................................................27
PORT FORWARDING........................................................................................................30
DMZ....................................................................................................................................30
PARENTAL CONTROL......................................................................................................31
FILTERING OPTIONS........................................................................................................32
DNS....................................................................................................................................35
IPV6 DNS...........................................................................................................................35
DYNAMIC DNS..................................................................................................................36
NETWORK TOOLS............................................................................................................37
IP QOS CONFIGURATION................................................................................................38
ROUTING...........................................................................................................................42
NAT ....................................................................................................................................44
LOGOUT............................................................................................................................45
MAINTAINANCE................................................................................................................46
SYSTEM.............................................................................................................................46
FIRMWARE UPGRADE.....................................................................................................47
PASSWORD.......................................................................................................................47
DIAGNOSIS .......................................................................................................................48
SYSTEM LOG....................................................................................................................50
LOGOUT............................................................................................................................50
STATUS............................................................................................................................. 50
HELP................................................................................................................................. 50
TROUBLESHOOTING ...................................................................................................... 51
NETWORKING BASICS ................................................................................................... 53
CHECK YOUR IP ADDRESS............................................................................................ 53
STATICALLY ASSIGNING AN IP ADDRESS .................................................................. 54
TECHNICAL SPECIFICATIONS....................................................................................... 55

Section 1 –Product Overview
D-Link DSL-2740E User Manual
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Safety Precaution
Follow the following instructions to prevent the device from risks and damage
Use the power adapter in the package.
An overburden power outlet or damaged lines and plugs may cause electric shock or fire accident. Check the power cords regularly. If you
find any damage, replace it at once.
Proper space left for heat dissipation is necessary to avoid overheating. The holes on the device are designed for heat dissipation to ensure
running normally. Do not cover these heat dissipation holes.
Do not put this device close to a heat source or high temperature place. Avoid the device direct exposing sunshine.
Do not put this device close to over damp place. Do not spill any fluid on this device.
Do not connect this device to PC or electronic product, unless our customer engineer or your broadband provider instructs you to do this,
because any wrong connection may cause power or fire risk.
Do not place this device on an unstable surface or support.
Introduction
The DSL-2740E supports multiple line modes. With four 10/100 base-T Ethernet interfaces at the user end, the device provides high-speed ADSL
broadband connection for high-end users like net bars and office users. It provides high performance access to the Internet with a downstream rate of
24 Mbps and an upstream rate of 1 Mbps. It complies with specifications of IEEE 802.11, 802.11b/g/n, WEP, WPA, and WPA2 security. The WLAN of
the device supports 2T2R.

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System Requirements
Network Requirement
Available DSL uplink access
Clients to be connected
Devices installed a wireless network adapter or 10 base T/100BaseT Ethernet adapter.
Web-based Configuration
Utility Requirement
Computer with the following:
Windows® , Macintosh, or Linux-based operating system
An installed Ethernet adapter
Browser Requirements:
Microsoft Internet Explorer® v7, Mozilla® Firefox v9.0, Google® Chrome 16.0, or Safari® v4 or higher
version.
Windows®Users: Make sure you have the latest version of Java installed. Visit www.java.com to
download the latest version.

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1 Features
The device supports the following features:
Various line modes
External PPPoE dial-up access
Internal PPPoE/PPPoA dial-up access
1483Bridged/1483Routed with dynamic IP or static IP
Multiple PVCs (the number of PVCs support is eight)
DHCP server/relay
Static route
Network Address Translation(NAT)
DMZ
Virtual Server
Universal plug and play (UPnP)
Dynamic Domain Name Server(DDNS)
Network Time Protocol(NTP)
Firmware upgrading through Web, TFTP
Resetting to the factory defaults through Reset button or Web
Diagnostic test
Web interface
Telnet CLI
IP/MAC/URL Filter
Application layer service
QoS
Port binding
Wireless network

Section 2 –Installation
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Installation
This section will guide 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. You can print out the two pages below and use the tables to list this information. This way you have a hard copy of all
the information needed to setup the Router. If it is necessary to reconfigure the device, all the necessary information can be easily accessed. Be
sure to keep this information safe and private.
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 a standard telephone cable. Ask your service provider for more
information about the use of low pass filters with your installation.
Operating Systems
The DSL-2740E 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 98 SE, Windows ME, Windows 2000, Windows XP, Windows Vista,
Windows 7, and Windows 8.

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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 Opera, Microsoft Internet Explorer® version 6.0, Netscape Navigator® version 6.2.3, or later
versions. 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 the Ethernet port 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 NIC adapter as standard. If your computer does not have
an Ethernet port, you must install an Ethernet NIC adapter before you can use the Router. If you need to install an adapter, follow the installation
instructions that come with the Ethernet NIC adapter.
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 as 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.

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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, PPPoA LLC or PPPoA VC-Mux)
Bridge Mode (1483 Bridged IP LLC or 1483 Bridged IP VC Mux)
IPoA/MER (Static IPAddress) (Bridged IP LLC, 1483 Bridged IP VC Mux, 1483 Routed IP LLC, 1483 Routed IP VC-Mux or IPoA)
MER (Dynamic IP Address) (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 (ADSL2+ Multi-Mode) 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) is 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
Setup window of the web management interface.

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Information you will need about your
DSL-2740E Router
Username
This is the Username needed to access the Router’s 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 management interface. The default Password is “admin.” The
user may change this.
LAN IP addresses for the DSL-2740E
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-2740E
This is the subnet mask used by the DSL-2740E and will be used throughout your LAN. The default subnet mask is 255.255.255.0.

Section 2 –Installation
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Information you will need about your LAN or computer
Ethernet NIC
If your computer has an Ethernet NIC, you can connect the DSL-2740E to the Ethernet port using an Ethernet cable.
DHCP Client status
Your DSL-2740E 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-2740E 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.)
It is recommended that you backup or record this information here, or in some other secure place, in case you have to re-configure your ADSL
connection in the future.
Once you have the above information, you are ready to setup and configure your DSL-2740E ADSL Router.

Section 3 –Web Configuration
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Hardware Description and Installation
LED Indicators
Note:
The figures in this document are for reference only.
Figure 1 Front panel
The following table describes the LEDs of the device.
LED
Color
Status
Description
Power
Green
On
The initialization of the system is complete.
Red
On
The device is powered on.
Blinking
The firmware is upgrading.
LAN
Green
Off
The Ethernet interface is not properly connected.
Blinking
The Ethernet interface is properly connected and data is being transmitted.
On
The Ethernet interface is properly connected, but no data is being transmitted.
2.4GHz
Green
Blinking
The WLAN function is enabled and data is being transmitted on the WLAN.
On
The WLAN function is enabled, but no data is being transmitted on the WLAN.
Off
The WLAN function is disabled.
WPS
Green
Blinking
WPS is successfully triggered.
Solid on for 5
seconds and
then turns off
Connection is successfully established between the router and the client through WPS.
DSL
Green
Off
No signal is being detected.
Blinking
The device is handshaking with the physical layer of the office end.
On
A connection is set up with the physical layer of the office end.

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LED
Color
Status
Description
Internet
Green
Off
The device is under the Bridge mode or powered off.
On
A connection is set up and no traffic is detected.
Blinking
Data is being transmitted over Internet.
Red
On
The device is attempted to become IP connected, but failed.
Figure 2 Rear panel
The following table describes the interfaces of the device.
Interface/Button
Description
DSL
RJ-11 interface for connecting the host to the telephone jack on the wall or the MODEM interface of the
splitter through a telephone line.
LAN4/3/2/1
For a PC or other Ethernet-abled device to join the LAN of 2750U by being connected to this interface with
RJ-45 cable.
WPS
Press and hold the button for 5 seconds starts WPS negotiation.
WIRELESS ON/OFF
Press and hold the button for 5 seconds starts WLAN.
ON/OFF
Power switch, which is used to power on or power off the router.
12V DC IN (power)
Interface for connecting the power adapter.
Reset (On the bottom side)
Press and hold the button for 1 second to restore the factory defaults.

Section 3 –Web Configuration
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Best Location for Wireless Operation
Many environmental factors may affect the effective wireless function of the DSL Router. If this is the first time that you set up a wireless network
device, read the following information:
The access point can be placed on a shelf or desktop, ideally you should be able to see the LED indicators in the front, as you may need to view them
for troubleshooting.
Designed to go up to 100 meters indoors and up to 300 meters outdoors, wireless LAN lets you access your network from anywhere you want.
However, the numbers of walls, ceilings, or other objects that the wireless signals must pass through limit signal range. Typical ranges vary
depending on types of materials and background RF noise in your home or business.
Connecting the Router
The following figure displays the application diagram for the connection of the device, PC, splitter and telephone sets..
Figure 3 DSL uplink connection

Section 3 –Web Configuration
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Step 1 Connect the DSL port of the router and the Modem port of the splitter through a telephone cable; connect the phone to the phone port of
the splitter through a telephone cable; and connect the Line port of the splitter to the uplink telephone jack on the wall.
The spliter has three ports:
LINE: Connect to a wall phone jack (RJ-11 jack)
MODEM: Connect to the Line interface of the router
PHONE: Connect to a telephone set
Step 2 Connect the LAN port of the router to the network interface card (NIC) of the PC through an Ethernet cable (MDI/MDIX).
Step 3 Plug the power adapter to the wall outlet and then connect the other end of it to the Power (12V DC IN) port of the route.

Section 3 –Web Configuration
D-Link DSL-2740E User Manual
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TCP/IP Configuration On A PC
Each network interface on the PC should either be configured with a statically defined IP address and DNS address, or be instructed to automatically
obtain an IP address using the network DHCP server. DSL router provides a DHCP server on its LAN and it is recommended to configure your LAN
to automatically obtain its IP address and DNS server IP address.
The configuration principle is identical but should be carried out differently on each operating system.
The right figure displays the TCP/IP Properties dialog box on Windows XP.
TCP/IP configuration steps for Windows XP are as follows:
Step 1 Choose Start > Control Panel > Network Connections.
Step 2 Right-click the Ethernet connection icon and choose Properties.
Step 3 On the General tab, select the Internet Protocol (TCP/IP) component and
click Properties. The Internet Protocol (TCP/IP) Properties window
appears.
Step 4 Select the Obtain an IP address automatically button.
Step 5 Select the Obtain DNS server address automatically button.
Click OK to save the settings.

Section 3 –Web Configuration
D-Link DSL-2740E User Manual
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Web Configuration
This chapter describes how to use Web-based management of the DSL router, which allows you to configure and control all of DSL router features
and system parameters in a user-friendly GUI.
Logging in and Wizard
The following description is a detail “How-To” user guide and is prepared for first time users.
Step 1 Open the Internet Explorer (IE) browser, and then go to
http://192.168.1.1.
Step 2 The Login window will pop up. Enter the username and password. And
then click Login.
The default username and password are both admin.
Select Remember my login info. on this computer, you only need to enter the
password once for the first time logging.
Step 3 After logging in the web configuration page, click on the Setup. The
Wizard page appears as shown on the right. The Wizard page will guide
you to fast configure your router to connect the Internet. Click Setup
Wizard.

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Step 4 In the next page shown on the right, there are 5 steps to configure the
device. Click Next to continue.
Step 5 Set a new login password. If you want to keep the previous password,
click Skip to go to next page directly. After setting a new password, click
Next.
Note:
The login password cannot contain a space.
Step 6 Set the time and date manually or setup a correct NTP server, and then
click Next.

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Step 7 Configure the Internet connection.
Please select correct country, ISP and service mode. If PPPoE is select, please
enter the PPPoE sername and Password provided by your ISP.
Click Next to go to the next page.
Note:
Different protocol requires entering different information. You can fill in the
entries according to what your ISP provides you.
Step 8 Configure the wireless network in this page.
1) Check Enable Your Wireless Network.
1) Set the SSID for your wireless network, you can also keep it as default.
2) Choose to display or hide your wireless network.
- Visible: Your wireless network can be detected.
- Invisible: You wireless network cannot be detected. Wireless clients
needs to enter the SSID and password manually to join this wireless
network.