D-Link DSL-2750E User manual

D-Link DSL-2750E
Wireless N 300 ADSL2+ Modem Router
User Manual
RECYCLABLE
2013/04/18
Ver. 1.00

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Contents
1Introduction ........................................................................................................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 ................................................................................................4
2Hardware Installation .........................................................................................6
2.1 DSL Uplink Connection .........................................................................6
3Web Configuration .............................................................................................7
3.1 Accessing the Device............................................................................7
3.2 Setup.....................................................................................................7
3.2.1 Wizard.........................................................................................7
3.2.2 Internet Setup...........................................................................12
3.2.3 Wireless....................................................................................18
3.2.4 Local Network...........................................................................24
3.2.5 LAN IPv6...................................................................................27
3.2.6 Time and Date ..........................................................................28
3.2.7 Logout.......................................................................................29
3.3 Advanced.............................................................................................29
3.3.1 Advanced Wireless...................................................................29
3.3.2 Port Forwarding........................................................................36
3.3.3 DMZ..........................................................................................37
3.3.4 SAMBA.....................................................................................38
3.3.5 3G Configuration.......................................................................39
3.3.6 Parental Control........................................................................47
3.3.7 Filtering Options........................................................................51
3.3.8 QoS Configuration....................................................................56
3.3.9 Firewall Settings .......................................................................60
3.3.10 DNS.....................................................................................60
3.3.11 Dynamic DNS......................................................................61
3.3.12 Network Tools......................................................................63
3.3.13 Routing................................................................................70
3.3.14 Schedules............................................................................74
3.3.15 NAT .....................................................................................75

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3.3.16 FTPD Setting.......................................................................77
3.3.17 FTPD Account.....................................................................77
3.3.18 IP Tunnel.............................................................................78
3.3.19 Logout .................................................................................82
3.4 Management........................................................................................83
3.4.1 Global IPv6...............................................................................83
3.4.2 System Management................................................................83
3.4.3 Firmware Update......................................................................85
3.4.4 Access Controls........................................................................86
3.4.5 Diagnosis..................................................................................89
3.4.6 Log Configuration .....................................................................92
3.4.7 Logout.......................................................................................93
3.5 Status...................................................................................................94
3.5.1 Device Info................................................................................94
3.5.2 Wireless Clients........................................................................95
3.5.3 DHCP Clients............................................................................95
3.5.4 IPv6 Status................................................................................95
3.5.5 Logs..........................................................................................96
3.5.6 Firewall Logs.............................................................................97
3.5.7 Statistics....................................................................................97
3.5.8 Route Info.................................................................................98
3.5.9 Logout.......................................................................................99
3.6 Help.....................................................................................................99

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1 Introduction
The DSL-2750E supports multiple line modes. With four 10/100 base-T Ethernet
interfaces at the user end, the device provides high-speed ADSL broadband
connection to the Internet or Intranet 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 supports 3G WAN, 3G
backup, Samba for USB storage and IPV6.
The device supports WLAN access, such as WLAN AP or WLAN device, to the
Internet. It complies with specifications of IEEE 802.11, 802.11b/g/n, WEP, WPA,
and WPA2 security.
1.1 Packing List
1 x DSL-2750E
1 x external splitter
1 x power adapter
1 x telephone cables (RJ-11)
1 x Ethernet cable (RJ-45)
1 x QIG
1 X CD
1.2 Safety Precautions
Take the following instructions to prevent the device from risks and damage
caused by fire or electric power:
Use the type of power marked in the volume label.
Use the power adapter in the product package.
Pay attention to the power load of the outlet or prolonged lines. An
overburden power outlet or damaged lines or plugs may cause electric
shock or fire accidents. 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

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are 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 heat source or under a high temperature
occurs. Keep the device away from direct sunshine.
Do not put this device close to an overdamp or watery place. Do not spill
fluid on this device.
Do not connect this device to a PC or electronic product unless instructed
by our customer engineer or your broadband provider. Wrong connection
may cause power or fire risk.
Do not place this device on an unstable surface or support.
1.3 LEDs and Interfaces
Note:
The figures in this document are for reference only.
Front Panel
Figure 1 Front panel
The following table describes the LEDs of the device.
LED Color Status Description
Power
Green Off The power is off.
On The power is on and the initialization is
normal.
Red On The device is initiating.
Blinks The firmware is upgrading.
LAN
1/2/3/4 Green
Off No LAN link.
Blinks Data is being transmitted through the
LAN interface.
On
The connection of LAN interface is
normal.

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LED Color Status Description
WLAN
Green
Blinks Data is transmitted through the WLAN
interface.
On The connection of WLAN interface is
normal.
Off The WLAN connection is not established.
WPS Blue Blinks WPS negotiation is enabled, waiting for
the clients.
Off WPS negotiation is not enabled on the
device.
USB Green
On The connection of 3G or USB flash disk
has been established.
Blinking Data is being transmitted.
Off The connection of 3G or USB flash disk
is not established.
DSL Green
Off Initial self-test is failed.
Blinks The device is detecting itself.
On Initial self-test of the unit has passed and
is ready.
Internet
Green
Off The device is under the Bridge mode, DSL connection is not present, or the
power is off.
Blinks
Internet data is being transmitted in the routing mode.
On The IP is connected.
Red On The device is attempted to become IP
connected, but failed.
Rear Panel
Figure 2 Rear panel

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The following table describes the interface of the device.
Interface/Button Description
DSL RJ-11 interface that connects to the telephone set through
the telephone cable.
LAN4/3/2/1 Ethernet RJ-45 interfaces that connect to the Ethernet
interfaces of computers or Ethernet devices.
USB USB port, for connecting the 3G network card or other USB
storage devices.
WPS Press the button for 1 second to enable WPS function.
WIRELESS
ON/OFF Press the button silently to enable WLAN function.
ON/OFF Power on or off the device.
12V DC IN Interface that connects to the power adapter. The power
adapter output is: 12V DC 1A.
Reset (on the
bottom case)
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 1 second and then release.
1.4 System Requirements
A 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 Vista, Windows 7, Windows 98SE, Windows
2000, Windows ME or Windows XP
Internet Explorer V5.0 or higher, Netscape V4.0 or higher, or Firefox 1.5 or
higher
1.5 Features
Various line modes
External PPPoE dial-up access
Internal PPPoE and PPPoA dial-up access
Leased line mode
1483B, 1483R, and MER access

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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)
Backup and restoration of configuration file
Ethernet interface supports crossover detection, auto-correction and
polarity correction
UPnP
IPV6
3G WAN and 3G Backup
Samba for USB storage

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2 Hardware Installation
2.1 DSL Uplink Connection
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.
Phone: Connect to a telephone set.
Step 2 Connect a LAN port of the device to the network card of the PC
through an Ethernet cable (MDI/MDIX).
Note:
Use twisted-pair cables to connect the device to a Hub or switch.
Step 3 Plug one end of the power adapter to the wall outlet and the other end
to the Power port of the device.
Figure 3 displays the application diagram for the connection of the device, PC,
splitter and telephone sets, when no telephone set is placed before the splitter.
Figure 3 Connection diagram

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3 Web Configuration
This chapter describes how to configure the device by using the Web-based
configuration utility.
3.1 Accessing the Device
The following is the detailed description of accesing the device for the first time.
Step 1 Open the Internet Explorer (IE) browser and enter http://192.168.1.1.
Step 2 The Login page shown in the following figure appears. Enter the user
name and password and click Login.
The user name and password of the super user are admin and
admin.
3.2 Setup
3.2.1 Wizard
After login, the Wizard page under Setup tab appears.
Wizard enables fast and accurate configuration of Internet connection and other
important parameters. The following sections describe 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

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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.
Click Setup Wizard. The page shown in the following figure appears.
There are 5 steps to configure the device. Click Next to continue.
Step 1 Set the time and date.

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Step 2 Configure the Internet connection.
Click Next after time and date setting and the following page appears. In this
page, you can set the internet connection.

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The following table describes the fields in this page.
Field Description
Country Select the country you located from the drop-down list.
ISP Select the ISP you subscribed the internet service
from.
Protocol Select the protocol you subscribed from your ISP.
Encapsulation
Mode
Select the method of encapsulation provided by your
ISP. You can select LLC or VCMUX.
PVC Settings
VPI: The virtual path between two points in an ATM
network. Its valid value is from 0 to 255.
VCI: The virtual channel between two points in an ATM
network, ranging from 32 to 65535 (0 to 31 is reserved
for local management ofATM traffic).
Note:
Different protocol requires entering different information. You can fill in
the entries according to what your ISP provides you.
Click Next. The page shown in the following page appears.

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Step 3 Configure the wireless network. Enter the information and click Next to
go to the next step.
Step 4 Change or create the password of an account. Click Next to go to the
next step.

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Step 5 Click Apply to save the settings.
Note:
In each step of the Wizard page, you can click Back to review or
modify 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.

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Click Add and the page shown in the following figure appears.
The following table describes the parameters in this page.
Field Description
PVC Settings
VPI: The virtual path between two points in an ATM
network. Its valid value is from 0 to 255.
VCI: The virtual channel between two points in an ATM
network, ranging from 32 to 65535 (0 to 31 is reserved
for local management ofATM traffic).
The values of VPI and VCI are provided by your ISP.
Service
Category
You can select from the drop-down list.

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Field Description
Protocol
Selected the protocol you subscribed from your ISP. It
displays the protocol type used for this WAN connection.
Encapsulation
Mode Select the method of encapsulation provided by your ISP. You can select
LLC
or
VCMUX
.
802.1Q VLAN
ID You can enable or disable this function. The value ranges from 1to 4094. Value 0means to disable this function.
- PPPoE or PPPoA
If the protocol is selected to be PPP over Ethernet (PPPoE) or PPP over ATM
(PPPoA), the following page appears.

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The following table describes the parameters of this page
Field Description
PPP Username The correct user name provided by your ISP.

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Field Description
PPP Password The correct password provided by your ISP
Authentication
Method
To authenticate whether the PPP username and
password are correct. The value can be AUTO, PAP,
CHAP
or
MS-CHAP
. Usually, you can select AUTO.
Dial-up mode
AlwaysOn
: If you select it, the system
automatically establishes a connection. If the
network is disconnected because
of external
factors when you are using the Internet access
service, the system tries connection every certain
time (for example, 10 seconds) until the connection
is established. If you pay for Internet access in the
monthly fee mode, you are recommended to use
this connection mode.
OnDemand
: If you select it, the system
automatically establishes a connection when a
network access request from the LAN is received. If
no network access request is sent from the LAN
within the set time of Idle Timeout, the system
automatically interrupts the connection. If you pay
for Internet access by time, you are recommended
to use this connection mode, which effectively
saves the expense of Internet access.
Manual: If you select it, you need to manually set
dialup connection after startup.
MRU Size
You can keep it as default.
Use Static IP
Address
If this function is disabled, the modem obtains an IP
address 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
NAT is one where all requests from the same internal
IP address and port are mapped to the same external
IP address and port. Furthermore, any external host
can send a packet to the internal host, by sending a
packet to the mapped external address.

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- MAC Encapsulation Routing/IPoA
Choose Protocol to be MAC Encapsulation Routing or IP over ATM (IPoA),
and the following page appears.
The following table describes the parameters of this page
Field Description
WAN IP
Address Enter the WAN IP address provided by the ISP.
WAN Subnet Enter the WAN subnet mask provided by the ISP. It