D-Link DWR-921 User manual

Version 2.00 | 03/01/2018
User Manual
DWR-921
4G LTE Router

iD-Link DWR-921 User Manual
D-Link reserves the right to revise this publication and to make changes in the content hereof without obligation to notify any
person or organization of such revisions or changes.
Manual Revisions
Trademarks
D-Link and the D-Link logo are trademarks or registered trademarks of D-Link Corporation or its subsidiaries in the United
States or other countries. All other company or product names mentioned herein are trademarks or registered trademarks of
their respective companies.
Copyright © 2018 by D-Link Corporation.
All rights reserved. This publication may not be reproduced, in whole or in part, without prior expressed written permission
from D-Link Corporation.
Revision Date Description
2.00 March 01, 2018 • Initial release
Preface
ErP Power Usage
This device is an Energy Related Product (ErP) with High Network Availability (HiNA), and automatically switches to a power-
saving Network Standby mode within 1 minute of no packets being transmitted. It can also be turned o through a power
switch to save energy when it is not needed.
Network Standby: 2.793 watts
Switched O: 0.083 watts

iiD-Link DWR-921 User Manual
Table of Contents
Product Overview..............................................................1
Package Contents.........................................................................1
System Requirements.................................................................1
Introduction ................................................................................... 2
Hardware Overview.....................................................................3
Front View................................................................................3
Back View.................................................................................4
Installation......................................................................... 5
Before You Begin........................................................................... 5
Wireless Installation Considerations......................................6
Conguration..................................................................... 7
Getting Started..............................................................................7
Internet............................................................................................. 8
WAN Service ...........................................................................8
Dynamic IP (DHCP)..........................................................8
Static IP..............................................................................10
PPPoE (Username / Password) ..................................11
PPTP....................................................................................13
L2TP ....................................................................................15
4G LTE / 3G .......................................................................17
Wizard.....................................................................................19
Failover ...................................................................................23
IPv6 ..........................................................................................24
Link-local Only ................................................................24
Static IPv6 .........................................................................25
Autoconguration (SLAAC/DHCPv6)......................26
PPPoE .................................................................................27
Wi-Fi.................................................................................................28
Device List .............................................................................28
Wi-Fi Settings .......................................................................28
WPS..........................................................................................30
Wi-Fi Advanced....................................................................32
LAN ..................................................................................................34
Device List .............................................................................34
LAN Settings.........................................................................34
DHCP.......................................................................................35
Advanced ......................................................................................36
DNS..........................................................................................36
Applications..........................................................................37
DMZ.........................................................................................38
Virtual Server........................................................................39
URL Filter................................................................................40
Routing...................................................................................41
QoS...........................................................................................42
MAC Address Filter.............................................................43
Outbound Filter...................................................................44
Inbound Filter ......................................................................45
SNMP.......................................................................................46
Advanced Network ............................................................47
Network Scan.......................................................................48
System ............................................................................................49
Table of Contents

iiiD-Link DWR-921 User Manual
Table of Contents
Time Settings .......................................................................49
Administration.....................................................................50
Reboot & Reset ....................................................................51
Firmware Upgrade..............................................................52
System Log............................................................................53
Message Service..................................................................54
SMS Inbox.........................................................................54
Create Message ..............................................................54
PIN Conguration...............................................................55
USSD........................................................................................56
Schedules ..............................................................................57
Add New Rule..................................................................57
Connection Reset ...............................................................58
Connect a Wireless Client to your Router ......................59
WPS Button...................................................................................59
Windows® 10................................................................................60
Windows® 8...................................................................................62
WPA/WPA2 ............................................................................62
Windows® 7...................................................................................64
WPA/WPA2 ............................................................................64
WPS..........................................................................................67
Windows Vista®............................................................................71
WPA/WPA2 ............................................................................72
Windows® XP................................................................................74
WPA/WPA2 ............................................................................75
Troubleshooting..............................................................77
Wireless Basics.................................................................81
What is Wireless?.........................................................................82
Tips...................................................................................................84
Wireless Modes............................................................................85
Networking Basics...........................................................86
Check your IP address...............................................................86
Statically Assign an IP address...............................................87
Wireless Encryption ......................................................88
What is WPA? ...................................................................88
Technical Specications..................................................89
Regulatory Information ..................................................90

1D-Link DWR-921 User Manual
Section 1 - Product Overview
Product Overview
Package Contents
If any of the above items are missing, please contact your reseller.
System Requirements
* Subject to services and service terms available from your carrier.
• A compatible mini-SIM/UICC card with service.*
• Computer withWindows, Mac OS, or Linux-based operating system with an installed Ethernet
adapter
• Java-enabled browser such as Internet Explorer 6, Safari 4.0, Chrome 20.0, or Firefox 7 or above
(for conguration)
Power Adapter
DWR-921 4G LTE Router
3G/4G Antennas
RJ45 Cable

2D-Link DWR-921 User Manual
Section 1 - Product Overview
Introduction
The D-Link 4G LTE Router allows users to access worldwide mobile broadband networks. Once connected, users can transfer
data, stream media, and send SMS messages. Simply insert your 3G / 4G SIM card, and share your 3G / 4G Internet
connection through an 802.11n wireless network or using any of the four 10/100 Ethernet ports.
The 4G LTE Router can be installed quickly and easily almost anywhere. This router is great for situations where an impromp-
tu wireless network must be set up, or wherever conventional network access is unavailable.

3D-Link DWR-921 User Manual
Section 1 - Product Overview
Hardware Overview
Front View
1 Reset Button Press this button with an unfolded paperclip and hold for ten seconds to reset the device.
2 SMS LED Will be solid green if the SMS inbox is full, or blinking if there is an unread new SMS message.
3 LAN LED Will be lit if an Ethernet connection is established, and will blink when data is being transferred.
4 Power LED Will be lit if the device is powered on and working.
5 WPS Button Press this button to initiate a new WPS connection. See WPS Button on page 59 for details.
6 Signal Strength LED Will blink red if there is no SIM card / signal. Solid red/amber/green indicates the signal strength.
7 2G/3G LED Will be lit if a 2G or 3G connection is established, and will blink when data is being transferred.
8 4G LED Will be lit if a 4G LTE connection is established, and will blink when data is being transferred.
9 WLAN LED Will be lit if the wireless function is enabled, and will blink when wireless data is being transferred.
1 5
6 7 98
2 3 4

4D-Link DWR-921 User Manual
Section 1 - Product Overview
1 Ethernet LAN Ports For connection to a network-enabled desktop or notebook computer.
2Ethernet WAN Port For connection to a DSL/cable modem or router.
3 SIM Card Slot Accepts a standard (U)SIM card for 3G/4G LTE connectivity.
4 Power Connector Connects to the included power adapter.
5 Power Button Turns the device on or o.
Back View
1 4 52 3

5D-Link DWR-921 User Manual
Section 2 - Installation
Before You Begin
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 an attic or garage.
Ensure that your DWR-921 4G LTE Router is disconnected and powered o before performing the steps below..
1. Verify that your SIM/UICC card is installed and has been activated by your carrier. To install your SIM/UICC card, insert it into the slot with the
gold contacts facing down. Push gently until it locks into place.
Caution: Always unplug/power down the router before installing or removing the SIM/UICC card. Never insert or remove the SIM/UICC card while
the router is in use.
2. Attach the included antennas to the back of the router, screwing them in clockwise. Arrange them so that they point upward.
3. Connect the power adapter to the socket on the back panel of your DWR-922. Plug the other end of the power adapter into a wall outlet or
power strip. Make sure the power button is in the“On”position.
a. The Power LED will light up to indicate that power is being supplied to the router and the router is turned on.
b. The LEDs on the front panel will ash on and o as the DWR-922 Mobile Router performs initialization and Internet connection processes.
c. After a few moments, if a connection has been established, the following LEDs will turn solid green: Power, Signal Strength, WLAN, LAN (if
connected), and either 2G/3G or 4G.
Note: By default, the DWR-922 uses the mobile network as the sole Internet connection. If you wish to use your mobile connection as a backup to
a wired connection, or you wish to use a wired connection exclusively, you must use the Setup Wizard or Congure WAN service manually.
4. Connect via Wi-Fi using the SSID and password printed on the bottom of the router, or through Ethernet via one of the LAN ports on the back
of your DWR-922.

6D-Link DWR-921 User Manual
Section 2 - Installation
Wireless Installation Considerations
The DWR-921 can be accessed using a wireless connection from anywhere within the operating range of your wireless network. Keep in mind that
the quantity, thickness, and location of walls, ceilings, or other objects that the wireless signals must pass through may limit the range of the wireless
signal. Ranges vary depending on the types of materials and background RF (radio frequency) noise in your home or oce. The key to maximizing
the wireless range is to follow these basic guidelines:
1. Minimize the number of walls and ceilings between the D-Link router and other network devices. Each wall or ceiling can reduce your adapter’s
range from 3 to 90 feet (1 to 30 meters).
2. Be aware of the direct line between network devices. A wall that is 0.5 meters (1.5 feet thick), at a 45-degree angle appears to be almost 1 meter
(3 feet) thick. At a 2-degree angle it looks over 14 meters (42 feet) thick. Position devices so that the signal will travel straight through a wall or
ceiling (instead of at an angle) for better reception.
3. Try to position access points, wireless routers, and computers so that the signal passes through open doorways and drywall. Materials such as
glass, metal, brick, insulation, concrete, and water can aect wireless performance. Large objects such as sh tanks, mirrors, le cabinets, metal
doors, and aluminum studs may also have a negative eect on range.
4. If you are using 2.4 GHz cordless phones, make sure that the 2.4 GHz phone base is as far away from your wireless device as possible. The base
transmits a signal even if the phone is not in use. In some cases, cordless phones, X-10 wireless devices, and electronic equipment such as ceiling
fans, uorescent lights, and home security systems may dramatically degrade wireless connectivity.

7D-Link DWR-921 User Manual
Section 4 - Conguration
Conguration
To access the conguration utility, open a web browser such as Internet Explorer and
enter the address of the router (192.168.0.1 by default).
To log in to the conguration utility, admin is the default username and the default
password is blank.
Note: If you get a Page Cannot be Displayed error, please refer to the Troubleshooting
section for assistance.
Once you have successfully logged in, you will see the Home page. On this page
you can view information about your Internet connection, the wireless/LAN status,
and system information.
At the top of the page is a menu. Clicking on one of these icons will take you to the
appropriate conguration section.
On each page, ll out the desired settings and click Apply when you are done or
Reset to revert to the old settings.
Getting Started

8D-Link DWR-921 User Manual
Section 4 - Conguration
Internet
Select the Internet connection type specied by your ISP. The
corresponding settings will be displayed below. Please see the
following sections for details on how to congure these dierent
connection types.
My Internet
Connection is:
WAN Service
On this page you can congure your Internet connection. If you are not sure which settings to use, please contact your Internet Service Provider
(ISP).
Dynamic IP (DHCP)
If the Internet host you are using requires you to enter a host
name, enter it here. In most cases, you may leave this blank.
(Optional) Fill in with IP address of primary DNS server.
(Optional) Fill in with IP address of secondary DNS server.
You may need to change the Maximum Transmission Unit (MTU)
for optimal performance. The default value is 0.
The default MAC address is set to the WAN port’s physical interface
MAC address on the router. It is not recommended that you
change the default MAC address unless required by your ISP. You
can use the Clone button to replace the WAN port’s MAC address
with the MAC address of your PC.
Host Name:
Primary DNS
Server:
Secondary DNS
Server:
MTU:
MAC Address:

9D-Link DWR-921 User Manual
Section 4 - Conguration
This feature enables this product to renew the WAN IP address
automatically when the lease time has expired.
Enabling this option will disable the NAT function of the DWR-921,
allowing it to act as a link for your devices to your Internet
connection, but without routing functions.
Click Apply to save your settings, or Refresh to revert to your
previous settings.
Auto-reconnect:
NAT disable:

10D-Link DWR-921 User Manual
Section 4 - Conguration
Enter the IP address assigned to your network connection.
Enter the subnet mask.
Enter the default gateway.
Enter the primary DNS server.
Enter the secondary DNS server.
You may need to change the Maximum Transmission Unit (MTU)
for optimal performance. The default value is 0.
The default MAC address is set to the WAN port’s physical interface
MAC address on the router. It is not recommended that you
change the default MAC address unless required by your ISP. You
can use the Clone button to replace the WAN port’s MAC address
with the MAC address of your PC.
Enabling this option will disable the NAT function of the DWR-921,
allowing it to act as a link for your devices to your Internet
connection, but without routing functions.
Click Apply to save your settings, or Refresh to revert to your
previous settings.
IP Address:
Subnet Mask:
Default
Gateway:
Primary DNS
Server:
Secondary DNS
Server:
MTU:
MAC Address:
NAT disable:
Static IP

11D-Link DWR-921 User Manual
Section 4 - Conguration
The username/account name that your ISP provides to you for
PPPoE dial-up.
Password that your ISP provides to you for PPPoE dial-up.
Re-type your password in this eld.
Fill in if provided by your ISP. (Optional)
Fill in if provided by your ISP. If not, keep the default value.
Fill in if provided by your ISP. If not, keep the default value
(optional).
Fill in if provided by your ISP. If not, keep the default value
(optional).
The default MAC address is set to the WAN port’s physical interface
MAC address on the router. It is not recommended that you
change the default MAC address unless required by your ISP. You
can use the Clone button to replace the WAN port’s MAC address
with the MAC address of your PC.
The amount of time of inactivity before disconnecting an
established PPPoE session. Set it to zero or enable auto-reconnect
to disable this feature.
You may need to change the Maximum Transmission Unit (MTU)
for optimal performance. The default value is 0.
Username:
Password:
Verify Password:
Service Name:
IP Address:
Primary DNS
Server:
Secondary DNS
Server:
MAC Address:
Maximum Idle
Time:
MTU:
PPPoE (Username / Password)

12D-Link DWR-921 User Manual
Section 4 - Conguration
Auto-reconnect:
NAT disable:
The device will automatically reconnect to your PPPoE connection
automatically.
Enabling this option will disable the NAT function of the DWR-921,
allowing it to act as a link for your devices to your Internet
connection, but without routing functions.
Click Apply to save your settings, or Refresh to revert to your
previous settings.

13D-Link DWR-921 User Manual
Section 4 - Conguration
Choose Static IP only if your ISP assigns you an IP address.
Otherwise, please choose Dynamic IP.
Enter the information provided by your ISP (Only applicable for
Static IP PPTP).
Enter the information provided by your ISP (Only applicable for
Static IP PPTP).
Enter the information provided by your ISP (Only applicable for
Static IP PPTP).
IP address of PPTP server.
User/account name that your ISP provides to you for PPTP dial-up.
Password that your ISP provides to you for PPTP dial-up.
Re-enter your password for verication.
Choose Always-on when you want to establish PPTP connection
all the time. If you choose Connect-on-demand,the device will
establish a PPTP connection when local users want to connect
to the Internet, and disconnect if there is no trac after the time
period dened by the Maximum Idle Time setting.
The time of no activity to disconnect your PPTP session. Set it to
zero or choose Always-on to disable this feature.
Address Mode:
PPTP IP Address:
PPTP Subnet
Mask:
PPTP Gateway IP
Address:
PPTP Server IP
Address:
Username:
Password:
Verify Password:
Reconnect
Mode:
Maximum Idle
Time:
PPTP

14D-Link DWR-921 User Manual
Section 4 - Conguration
Enabling this option will disable the NAT function of the DWR-921,
allowing it to act as a link for your devices to your Internet
connection, but without routing functions.
Click Apply to save your settings, or Refresh to revert to your
previous settings.
NAT disable:

15D-Link DWR-921 User Manual
Section 4 - Conguration
Choose Static IP only if your ISP assigns you an IP address.
Otherwise, please choose Dynamic IP.
Enter the information provided by your ISP (Only applicable for
Static IP L2TP).
Enter the information provided by your ISP (Only applicable for
Static IP L2TP).
Enter the information provided by your ISP (Only applicable for
Static IP L2TP).
IP address of L2TP server.
User/account name that your ISP provides to you for L2TP dial-up.
Password that your ISP provides to you for L2TP dial-up.
Re-type your password in this eld.
Choose Always-on when you want to establish L2TP connection
all the time. If you choose Connect-on-demand the device will
establish L2TP connection when local users want to use Internet,
and disconnect if no trac after time period of Maximum Idle
Time.
The time of no activity to disconnect your L2TP session. Set it to 0
or choose Always-on to disable this feature.
Address Mode:
L2TP IP Address:
L2TP Subnet
Mask:
L2TP Gateway IP
Address:
L2TP Server IP
Address:
Username:
Password:
Verify Password:
Reconnect
Mode:
Maximum Idle
Time:
L2TP

16D-Link DWR-921 User Manual
Section 4 - Conguration
Enabling this option will disable the NAT function of the DWR-921,
allowing it to act as a link for your devices to your Internet
connection, but without routing functions.
Click Apply to save your settings, or Refresh to revert to your
previous settings.
NAT disable: