D Link SL2750UT1 User Manual
DSL-2750U/DSL-2750B User manual
DSL-2750U/ DSL-2750B/
DSL-2751U/ DSL-2751B
User Manual
DSL-2750U/DSL-2750B User manual
Contents
1 Introduction ........................................................................................................ 1
1.1 Packing List ................................................................................................. 1
1.2 Safety Precautions................................................................................ 1
1.3 LEDs and Interfaces..............................................................................2
1.4 System Requirements ........................................................................... 4
1.5 Features ................................................................................................ 5
2 Hardware Installation ......................................................................................... 7
3 About the Web Configurator............................................................................... 8
3.1 Access the Device.................................................................................9
3.2 Setup ................................................................................................... 10
3.2.1 Wizard....................................................................................... 10
3.2.2 Internet Setup ........................................................................... 16
3.2.3 Wireless Connection................................................................. 25
3.2.4 Local Network...........................................................................29
3.2.5 Time and Date.......................................................................... 32
3.2.6 3G Internet Setup............................................................................... 34
3.2.7 Logout.......................................................................................35
3.3 Advanced............................................................................................. 35
3.3.1 Wireless Settings......................................................................35
3.3.2 Port Forwarding ........................................................................ 48
3.3.3 Port Triggering .......................................................................... 51
3.3.4 DMZ..........................................................................................54
3.3.5 Parental Control........................................................................54
3.3.6 Filtering Options........................................................................ 59
3.3.7 DNS .......................................................................................... 65
3.3.8 Dynamic DNS ........................................................................... 66
3.3.9 Storage Service ........................................................................ 68
3.3.10 Multicast .............................................................................. 70
3.3.11 Network Tools......................................................................71
3.3.12 Routing................................................................................84
3.3.13 RIP ...................................................................................... 87
3.3.14 MultiNat ............................................................................... 88
3.3.15 Schedules............................................................................ 89
3.3.16Logout ................................................................................. 90 i
3.4 Maintenance........................................................................................90
3.4.1 System......................................................................................90
3.4.2 Firmware Update ...................................................................... 92
3.4.3 Access Controls........................................................................ 92
3.4.4 Diagnostics ............................................................................... 96
3.4.5 System Log............................................................................... 97
3.4.6 Logout.......................................................................................99
3.5 Status................................................................................................... 99
3.5.1 Device Info................................................................................ 99
3.5.2 Wireless Clients......................................................................101
3.5.3 DHCP Clients.......................................................................... 101
3.5.4 Logs........................................................................................102
3.5.5 Statistics.................................................................................. 102
3.5.6 Route info ............................................................................... 104
3.5.7 Logout.....................................................................................104
DSL-2750U/DSL-2750B User manual
1 Introduction
The DSL-2750U/ DSL-2750B/ DSL-2751U/ DSL-2751B is a highly integrated ADSL2/2+
Integrated Access Device, which is an advanced gateways incorporating Ethernet Switch
and Wireless home networking Access Point ,complied with the IEEE802.11b/g /n standards. It is usually prefered to provide high access performance applications for the individual users,the SOHO,the small enterprise and so on.
1.1 Packing List
1 x DSL-2750U/ DSL-2750B/ DSL-2751U/ DSL-2751B
1 x external splitter
1 x power adapter
2 x telephone cables (RJ-11)
1x Ethernet cable (RJ-45)
1 x USB cable (usb)
1 x user manual
1 x quality guarantee card
1 x certificate of quality
1.2 Safety Precautions
Follow the following instructions to prevent the device from risks and damage caused by
fire or electric power:
Use volume labels to mark the type of power.
Use the power adapter packed within the device package.
Pay attention to the power load of the outlet or prolonged lines. 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 damage caused by
overheating to the device. The long and thin holes on the device are
DSL-2750U/DSL-2750B User manual
designed for heat dissipation to ensure that the device works normally. Do not
cover these heat dissipation holes.
Do not put this device close to a place where a heat source exists or high temper-
ature occurs. Avoid the device from direct sunshine.
Do not put this device close to a place where it is over damp or watery. Do not spill
any fluid on this device.
Do not connect this device to any PCs or electronic products, 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.
1.3 LEDs and Interfaces
Front Panel
Figure 1 Front panel
Side Panel
The following table describes the LEDs of the device.
LED Color Status Description
Off The power is off.
Green
Power
Red
LAN
1/2/3/4
WLAN Green
USB
Green
Green
On
On The device is initiating.
Blinks The firmware is upgrading.
Off No LAN link.
Blinks
On
Blinks
On
Off
On
Blink Data is being transmitted.
The power is on and the initialization is
normal.
Data is being transmitted through the
LAN interface.
The connection of LAN interface is normal.
Data is being transmitted through the
WLAN interface.
The connection of WLAN interface is
normal.
The WLAN connection is not established.
The connection of 3G or USB flash disk
has been established.
Off No signal is detected.
Off Initial self-test failed.
DSL Green
Internet Green Off
Blinks The device is detecting itself.
On Initial self-test of the unit has passed.
The device is under the Bridge mode,
DSL connection is not present, or the
power is off.
DSL-2750U/DSL-2750B User manual
LED Color Status Description
On
Red On
WPS (on
the side
panel)
Green
Blinks
Off Device is ready for new WPS to setup.
Rear Panel
IP is connected and no traffic is detected.
The device attempted an IP connection,
but failed.
WPS negotiation is enabled, waiting for
clients.
DSL-2750U/DSL-2750B User manual
Figure 2 Rear panel
Interface/Button Description
DSL
LAN4/3/2/1
USB
WLAN Button to enable or disable WLAN.
Reset
ON/OFF Power on or off.
Power
WPS (on the side
panel)
The following table describes the interface of the device.
RJ-11 interface that connects to the telephone set
through the telephone cable.
Ethernet RJ-45 interfaces that connect to the Ethernet
interfaces of computers or Ethernet devices.
USB port, for connecting the 3G network card or other
USB storage devices.
Reset to the factory defaults. To restore factory defaults, keep the device powered on and push a paper
clip into the hole. Press down the button for over 5
seconds and release.
Interface that connects to the power adapter. The
power adapter output is: 12 V DC 1A.
WPS button to setup connection to Client
1.4 System Requirements
Recommended system requirements are as follows:
An 10 baseT/100BaseT Ethernet card is installed on your PC
A hub or switch (attached to several PCs through one of Ethernet interfaces on the
device)
Operating system: Windows 98SE, Windows 2000, Windows ME, Windows XP,
Windows Vista or Windows 7
DSL-2750U/DSL-2750B User manual
Internet Explorer V5.0 or higher, Netscape V4.0 or higher, or Firefox 1.5 or higher
4
1.5 Features
The device supports the following features:
Various line modes
External PPPoE dial-up access
Internal PPPoE and PPPoA dial-up access
Leased line mode
1483B, 1483R, and MER access
Multiple PVCs (eight at most) and these PVCs can be isolated from each other
A single PVC with multiple sessions
Multiple PVCs with multiple sessions
Binding of ports with PVCs
802.1Q and 802.1P protocol
DHCP server
NAT and NAPT
Static route
Firmware upgrade: Web, TFTP, FTP
Reset to the factory defaults
DNS relay
Virtual server
DMZ
Two-level passwords and user names
Web user interface
Telnet CLI
System status display
PPP session PAP and CHAP
IP filter
IP QoS
Remote access control
Line connection status test
Remote management (telnet and HTTP, TR069))
Backup and restoration of configuration file
Ethernet interface supports crossover detection, auto-correction and polarity correc-
tion
UPnP
USB storage
Printer server
DSL-2750U/DSL-2750B User manual
2 Hardware Installation
Step 1 Connect the DSL port of the device and the Modem port of the splitter
with a telephone cable. Connect the phone to the Phone port of the
splitter through a telephone cable. Connect the incoming line to the Line
port of the splitter. The splitter has three ports:
Line: Connect to a wall phone port (RJ-11 jack).
Modem: Connect to the DSL port of the device.
Step 2 Connect the LAN port of the device to the network card of the PC
Note:
Use twisted-pair cables to connect with the Hub or switch.
Step 3 Plug one end of the power adapter to the wall outlet and connect the
application diagram for the connection of the device, PC, splitter and telephone sets, when
no telephone set is placed before the splitter.
Phone: Connectto a telephone set.
through an Ethernet cable (MDI/MDIX).
other end to the Power port of the device. Connection 1: Figure 3 displays the
DSL-2750U/DSL-2750B User manual
Figure 3 Connection diagram (without telephone sets before the splitter)
Connection 2: Figure 4 displays the application diagram for the connection of the device,
PC, splitter and telephone sets when a telephone set is placed before the splitter.As illustrated in the following figure, the splitter is installed close to the device.
Figure 4 Connection diagram (with a telephone set before the splitter)
mended.
Connection 1 is recom-
Note:
When connection 2 is used, the filter must be installed close to the telephone
cable. See Figure 4. Do not use the splitter to replace the filter.
Installing a telephone directly before the splitter may lead to failure of connection between the device and the central office, or failure of Internet access, or slow connection
speed. If you really need to add a telephone set before the splitter, you must add a microfilter before a telephone set. Do not connect several telephones before the splitter or
connect several telephones with the microfilter.
3 About the Web Configurator
DSL-2750U/DSL-2750B User manual
This chapter describes how to configure the device by using the Web-based configuration
utility.
3.1 Access the Device
The following is the detailed description of accesing the device for the first time.
Step 4 Open the Internet Explorer (IE) browser and enter http://192.168.1.1.
Step 5 The Login page shown in the following figure appears. Enter the user
The user name and password of the super user are admin and admin.
The user name and password of the normal user are user and user.
If you log in as the super user successfully, the page shown in the following figure appears.
name and password.
If the login information is incorrect, click Try Again in the page that pops up to log in
again.
DSL-2750U/DSL-2750B User manual
3.2 Setup
3.2.1 Wizard
Wizard enables fast and accurate configuration of Internet connection and other impor-
tant parameters. The following sections describe these various configuration parameters.
When subscribing to a broadband service, you should be aware of the method, by which
you are connected to the Internet. Your physical WAN device can be Ethernet, DSL, or
both. Technical information about the properties of your Internet connection is provided
by your Internet service provider (ISP). For example, your ISP should inform you whether
you are connected to the Internet using a static or dynamic IP address, or the protocol,
such as PPPoA or PPPoE, that you use to communicate over the Internet. Step 1
Choose Setup > Wizard. The page shown in the following figure
appears.
DSL-2750U/DSL-2750B User manual
Step 2 Click Setup Wizard. The page shown in the following figure appears.
10
Step 3 There are four steps to configure the device. Click Next to continue.Step 4 Change
Device Login Password.The default password is "admin", in order to secure your network,
please modify the password. Note: Confirm Password must be the same as "New Pass-
word". Of course, you can click Skip to ignore the step
.
DSL-2750U/DSL-2750B User manual
Step 5 Set the time and date.
Step 6Configure the Internet connection. Select the country and ISP. Set the VPI and VCI.
If you fail to find the country and ISP from the drop-down lists, select Others.
Click Next. If the Protocol is PPPoE or PPPoA, the page shown in either of the
two following figures appears.
DSL-2750U/DSL-2750B User manual
In this page, enter the user name and password. If the Protocol is Dynamic IP, the page
shown in the following figure appears.
DSL-2750U/DSL-2750B User manual
If the Protocol is Bridge, the page shown in the following figure appears. If the Protocol is
Static IP, the page shown in the following figure appears.
Enter the IP Address, Subnet Mask, Default Gateway, and Primary DNS Server. Click
Next. The page shown in the following page appears.
DSL-2750U/DSL-2750B User manual
Step 7Configure the wireless network. Enter the information and click Next.
Step 8Completed And Apply. Click Apply to apply current settings and finished the
setup of the DSL-2750U/ DSL-2750B/ DSL-2751U/ DSL-2751B router.Click
Back to review or modify settings.
DSL-2750U/DSL-2750B User manual
Note:
In each step of the Wizard page, you can click Back to review ormo-
dify the previous settings. Click Cancel to exit the wizard page.
3.2.2 Internet Setup
Choose Setup > Internet Setup. The page shown in the following figure appears. In this
page, you can configure the WAN interface of the device.
DSL-2750U/DSL-2750B User manual
Click Add in “INTERNET SETUP”. The page shown in the following figure appears.
DSL-2750U/DSL-2750B User manual
DSL-2750U/DSL-2750B User manual
Click Next, the page shown in the following figure appears.
DSL-2750U/DSL-2750B User manual
If you select the PPP over Ethernet (PPPoE) as the connection protocol, the following page appears.
DSL-2750U/DSL-2750B User manual
DSL-2750U/DSL-2750B User manual
PPP Username: The correct user name that your ISP provides to you.
PPP Password: The correct password that your ISP provides to you.
Authentication Method: The value can be AUTO, PAP, CHAP, or MSCHAP.
Usually, you can select AUTO.
Dial on demand (with idle timeout timer): If this function is enabled, you need
to enter the idle timeout time. Within the preset minutes, if the modem does not
detect the flow of the user continuously, the modem automatically stops the
PPPoE connection. Once it detects the flow (like access to a webpage), the
modem restarts the PPPoE dialup. If this function is disabled, the modem performs PPPoE dial-up all the time. The PPPoE connnection does not stop, unless
the modem is powered off and DSLAM or uplink equipment is abnormal.
MTU Size: Maximum Transmission Unit. Sometimes, you must modify this func-
tion to access network successfully.
PPP IP extension: If this function is enabled, the WAN IP address obtained by
the modem through built-in dial-up can be directly assigned to the PC being attached to the modem (at this time, the modem connects to only one PC). From
the aspect of the PC user, the PC dials up to obtain an IP addres. But actually,
the dial-up is done by the modem. If this function is disabled, the modem itself
obtains the WAN IP address.
Use Static IP Address: If this function is disabled, the modem obtains an IP ad-
dress assigned by an uplink equipment such as BAS, through PPPoE dial-up. If
this function is enabled, the modem uses this IP address as the WAN IP address.
Enable NAT: Select it to enable the NAT functions of the modem. If you do not
want to enable NAT and wish the modem user to access the Internet normally,
you must add a route on the uplink equipment. Otherwise, the access to the Internet fails. Normally, NAT should be enabled.
Enable Firewall: Enable or disable IP filtering.
Enable IGMP Multicast: IGMP proxy. For example, if you wish that the PPPoE
mode supports IPTV, enable this function.
If you select the MAC Encapsulation Routing(MER) as the connection protocol, the fol-
lowing page appears.
DSL-2750U/DSL-2750B User manual
DSL-2750U/DSL-2750B User manual
Obtain an IP address automatically: The modem obtains a WAN IP address au-
tomatically and at this time it enables DHCP client functions. The WAN IP address
is obtained from the uplink equipment like BAS and the uplink equipment is required
to enable the DHCP server functions.
Use the following IP address: If you want to manually enter the WAN IP address,
select this check box and enter the information in the field.
WAN IP Address: Enter the IP address of the WAN interface provided by your ISP.
WAN Subnet Mask: Enter the subnet mask concerned to the IP address of the
WAN interface provided by your ISP.
Default Gateway: Enter the default gateway.
Obtain DNS info automatically from WAN interface: You can get DNS server
information from the selected WAN interface
Use the following Static DNS IP address: If you want to manually enter the IP
address of the DNS server, select this check box and enter the information in the
fields.
Primary DNS server: Enter the IP address of the primary DNS server.
Secondary DNS server: Enter the IP address of the secondary DNS server pro-
vided by your ISP.
After proper settings, click Next.
DSL-2750U/DSL-2750B User manual
3.2.3 Wireless Connection
This section includes the wireless connection setup wizard and WPS setup wizard. There
are two ways to setup your wireless connection. You can use the Wireless Connection
Setup Wizard or you can manually configure the connection. Choose Setup > Wireless
Connection. The Wireless Connection page shown in the following figure appears.
DSL-2750U/DSL-2750B User manual
3.2.3.1 Wireless Wizard
In Wireless Connection page, Click “Wireless Connection Setup Wizard”, the page
shown in the following figure appears.
DSL-2750U/DSL-2750B User manual
If you only select “Manually assign a network key”, click “Next”, the page shown in the
following figure appears.
After you enter the network key, the page shown in the following figure appears, you can
confirm the wireless settings in this page.
DSL-2750U/DSL-2750B User manual
Click Save to save the settings.
3.2.3.2 Wireless Device Add
In Wireless Connection page, Click Add Wireless Device with WPS, the page shown
in the following figure appears.
Select Auto, click Next, the page shown in the following figure appears.
When PIN is used, users are only allowed to enter no more than eight digits in thefield. Select Manual, click Next, the page shown in the following figure appears.
DSL-2750U/DSL-2750B User manual
It displays the current wireless settings and you can manually enter the settings in
the wireless device that’s to be added in the wireless network.
3.2.3.3 Manual Wireless Setup
If you want to configure the Internet settings of you new D-Link Router manually, click
Manual Wireless Connection Setup. It will redirect to 3.3.1 Wireless Settings.
3.2.3.4 Wireless WPS
In Wireless Connection page, Click Reset to Unconfigured, the page shown in the
following figure appears.
Once the “Reset to Unconfigured” button is clicked, the “wireless settings” will be
reset to factory default, other settings will remain unchanged.
3.2.4 Local Network
You can configure the LAN IP address according to the actual application. The preset
IP address is 192.168.1.1. You can use the default settings and DHCP service to
manage the IP settings for the private network. The IP address of the device is the
base address used for DHCP. To use the device for DHCP on your LAN, the IP address pool used for DHCP must be compatible with the IP address
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