D Link DI774VB1 Users Manual
D-Link Air Xpert DI-774
2.4 GHz / 5 GHz Tri-Mode Dualband
Wireless Router
Manual
Building Networks for People
Content s
Package Contents ................................................................................3
Introduction............................................................................................4
Connections..........................................................................................5
Features ...............................................................................................6
LEDs ....................................................................................................7
Wireless Basics....................................................................................8
Getting Started....................................................................................10
Using the Configuration Menu..............................................................11
Networking Basics ..............................................................................40
Troubleshooting...................................................................................55
T echnical S pecifications ......................................................................61
Frequently Asked Questions ................................................................64
Contacting T echnical Support ..............................................................92
Warranty and Registration ...................................................................93
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Package Contents
Contents of Package:
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D-Link Air Xpert DI-774 2.4GHz/5GHz Tri-Mode Dualband
Wireless Router
Power Adapter – 5V DC, 3.0A
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Manual on CD
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Quick Installation Guide
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Ethernet Cable
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Note: Using a power supply with a different voltage rating than the one included with the
DI-774 will cause damage and void the warranty for this product.
If any of the above items are missing, please contact your reseller.
System Requirements For Configuration:
Computer with Windows, Macintosh, or Linux-based
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operating system with an installed Ethernet adapter
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Introduction
At up to five times the speed of previous wireless devices, you can work faster and more
efficiently , increasing productivity . With the DI-774, bandwidth-intensive applications like
graphics or multimedia will benefit significantly because large files are able to move
across the network quickly. This versatile wireless router also features four times the
number of non-overlapping channels than a device that supports only 802.1 1g, so more
users can access the network.
Support for all three standards (802.1 1g; 802.1 1a; 802.1 1b) means that you can grow
your network without having to worry about legacy wireless equipment being incompatible
with newer compliant devices from other manufacturers. This also allows network
administrators to partition the usage of the dualband by segmenting users and creating
special access privilege networks for classified document transfer and communications.
With the DI-774 you can securely connect to wireless clients on the network using
802.1x for wireless user authentication, as well as WPA (Wi-Fi Protected Access )
providing you a much higher level of security for your data and communications than
has previously been available.
Through its easy-to-use Web-based user interface, the DI-774 lets you control the
information that is accessible to those on the wireless network, whether from the Internet
or from your company’s server:
Content Filtering – Easily applied content filtering based on MAC Address, IP Address,
URL and /or Domain Name.
Filter Scheduling – Filters can be scheduled to be active on certain days or for a
duration of hours or minutes.
Network Address Translation – NAT protects the DI-774 and its users from outside
intruders gaining access to your private network
VPN Multiple/Concurrent Sessions – Supports multiple and concurrent IPSec and
PPTP sessions, so multiple users behind the DI-774 can access corporate networks
through various VPN clients more securely .
TM
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Connections - Back Panel of Unit
All Ethernet Ports (WAN and LAN)
are auto MDI/MDIX, meaning you can
use either a straight-through or a
crossover Ethernet cable.
Pressing the
Reset Button
restores the
router to its
original factory
default settings.
Auto MDI/MDIX
LAN ports
automatically
sense the cable
type when
connecting to
Ethernet-enabled
computers.
The Auto MDI/MDIX
WAN port is the
connection for the
Ethernet cable to
the Cable or DSL
modem
Receptor
for the
Power
Adapter
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Features
Fully compatible with the 802.1 1g standard to provide a wireless data rate of
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up to 54Mbps
Backwards compatible with the 802.1 1b standard to provide a wireless data
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rate of up to 1 1Mbps
WP A (Wi Fi Protected Access ) authorizes and identifies users based on a
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secret key that changes automatically at a regular interval, for example:
TKIP (Temporal Key Integrity Protocol), in conjunction with a RADIUS
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server, changes the temporal key every 10,000 packet s, ensuring greater
security
Pre-Shared Key mode means that the home user, without a RADIUS
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server, will obt ain a new security key every time the he or she connects
to the network, vastly improving the safety of communications on the
network.
802.1x Authentication in conjunction with the RADIUS server verifies the
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identity of would be clients
Utilizes OFDM technology (Orthogonal Frequency Division Multiplexing) to
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ensure strong wireless signals for both 802.1 1g and 802.1 1a
User-friendly configuration and diagnostic utilities
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Operates in the 2.4GHz frequency range
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TM
Connects multiple computers to a Broadband (Cable or DSL) modem to
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share the Internet connection
Advanced Firewall features
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Supports NA T with VPN pass-through, providing added security
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MAC Filtering
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IP Filtering
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URL Filtering
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Domain Blocking
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Scheduling
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DHCP server supported enables all networked computers to automatically
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receive IP addresses
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Web-based interface for Managing and Configuring
Access Control to manage users on the network
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Supports special applications that require multiple connections
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Equipped with 4 10/100 Ethernet ports, 1 W AN port, Auto MDI/MDIX
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LEDs - Front Panel of Unit
LED stands for Light-Emitting Diode. The DI-774 has the following LEDs:
Power
A solid light
indicates a proper
connection to the
power supply
Status
A blinking light
indicates that the
DI-774 is ready
WAN LED
A solid light
indicates connection on the WAN
port. This LED
blinks during data
transmission
WLAN LEDs for 11a
and 11g wireless net-
work segments.
A solid light indicates that the
wireless segment is
ready . The LEDs
blink during wireless
data transmission
Local
Network LEDs
A solid light indicates
a connection to an
Ethernet-enabled
computer on ports 1-
4. The LEDs blink
during data transmission
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Wireless Basics
D-Link wireless products are based on industry standards to provide easy-to-use and
compatible high-speed wireless connectivity within your home, business or public access
wireless networks. D-Link wireless products will allow you access to the data you want,
when and where you want it. Y ou will be able to enjoy the freedom that wireless networking
brings.
A WLAN is a cellular computer network that transmits and receives data with radio
signals instead of wires. WLANs are used increasingly in both home and office
environments, and public areas such as airports, coffee shops and universities. Innovative
ways to utilize WLAN technology are helping people to work and communicate more
efficiently . Increased mobility and the absence of cabling and other fixed infrastructure
have proven to be beneficial for many users.
Wireless users can use the same applications they use on a wired network. Wireless
adapter cards used on laptop and desktop systems support the same protocols as
Ethernet adapter cards.
People use wireless LAN technology for many different purposes:
Mobility - Productivity increases when people have access to data in any location
within the operating range of the WLAN. Management decisions based on real-time
information can significantly improve worker efficiency .
Low Implementation Costs – WLANs are easy to set up, manage, change and
relocate. Networks that frequently change can benefit from WLANs ease of
implementation. WLANs can operate in locations where installation of wiring may be
impractical.
Installation and Network Expansion - Installing a WLAN system can be fast
and easy and can eliminate the need to pull cable through walls and ceilings. Wireless
technology allows the network to go where wires cannot go - even outside the home or
office.
Scalability – WLANs can be configured in a variety of topologies to meet the needs of
specific applications and installations. Configurations are easily changed and range
from peer-to-peer networks suitable for a small number of users to larger infrastructure
networks to accommodate hundreds or thousands of users, depending on the number
of wireless devices deployed.
Inexpensive Solution - Wireless network devices are as competitively priced as
conventional Ethernet network devices.
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Wireless Basics (continued)
Standards-Based Technology
The DI-774 Wireless Broadband Router utilizes the new 802.11g standard, in addition
to the 802.1 1a and 802.1 1b standards.
The IEEE 802.11g st andard is an extension of the 802.11b standard. It increases the
data rate up to 54 Mbps within the 2.4GHz band, utilizing OFDM technology .
This means that in most environments, within the specified range of this device, you will
be able to transfer large files quickly or even watch a movie in MPEG format over your
network without noticeable delays. This technology works by transmitting high-speed
digital data over a radio wave utilizing OFDM (Orthogonal Frequency Division Multiplexing)
technology. OFDM works by splitting the radio signal into multiple smaller sub-signals
that are then transmitted simultaneously at different frequencies to the receiver . OFDM
reduces the amount of crosstalk (interference) in signal transmissions.
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Installation Considerations
The D-Link Air Xpert DI-774 lets you access your network, using a wireless connection,
from virtually anywhere within its operating range. Keep in mind, however, that the number ,
thickness and location of walls, ceilings, or other objects that the wireless signals must
pass through, may limit the range. T ypical ranges vary depending on the types of materials
and background RF (radio frequency) noise in your home or business. The key to
maximizing wireless range is to follow these basic guidelines:
Keep the number of walls and ceilings between the DI-624 and other network
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devices to a minimum - each wall or ceiling can reduce your D-Link wireless
product’s range from 3-90 feet (1-30 meters.) Position your devices so that
the number of walls or ceilings is minimized.
Be aware of the direct line between network devices. A wall that is 1.5 feet
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thick (.5 meters), at a 45-degree angle appears to be almost 3 feet (1 meter)
thick. At a 2-degree angle it looks over 42 feet (14 meters) thick! Position
devices so that the signal will travel straight through a wall or ceiling (instead
of at an angle) for better reception.
Building Materials can impede the wireless signal - a solid metal door or
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aluminum studs may have a negative effect on range. Try to position wireless
devices and computers with wireless adapters so that the signal passes
through drywall or open doorways and not other materials.
Keep your product away (at least 3-6 feet or 1-2 meters) from electrical
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devices or appliances that generate extreme RF noise.
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