D-Link DI-774 User Manual

D-Link

2.4 GHz / 5 GHz Tri-Mode Dualband Wireless Router

Air Xpert DI-774

Manual

Building Networks for People

Contents

Package Contents ................................................................................ 3

Introduction ........................................................................................... 4

Wireless Basics .................................................................................... 6

Getting Started.................................................................................... 10

Using the Configuration Menu ............................................................. 12

Networking Basics .............................................................................. 41

Troubleshooting .................................................................................. 70

Technical Specifications...................................................................... 76

Contacting Technical Support.............................................................. 79

Package Contents

Contents of Package:

D-Link Air Xpert DI-774 2.4GHz/5GHz Tri-Mode Dualband Wireless Router

Power Adapter – 5V DC, 3.0A

Manual on CD

Quick Installation Guide

Ethernet Cable

Warranty and Registration ................................................................... 80

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

operating system with an installed Ethernet adapter

Introduction

The new D-Link Air Xpert DI-774 Tri-Mode Dualband Wireless Router is a next generation broadband router that simultaneously serves both 802.11a wireless networks at 54 Mbps (72 Mbps in Turbo mode), 802.11g wireless networks at 54Mbps, and 802.11b.

The DI-774 will automatically obtain an IP address and forward additional IP addresses to multiple clients for a seamless Ethernet network connection and shared Internet access.

At up to 54Mbps in both the 5GHz and 2.4GHz frequency ranges, the D-Link Air Xpert DI-774 router delivers data at speeds 5 times faster than previous wireless standards.

After completing the steps outlined in the Quick Installation Guide (included in your package) not only will you have the ability to share information and resources, but you will also be able to enjoy the freedom that wireless networking delivers.

The DI-774’s web-based user interface (accessible from most Internet browser applications), the DI-774 will work with most popular operating systems, including Windows, Macintosh, Linux and can be easily integrated into a large network. Please

take a look at the Getting Started section in this manual to see an example of an Infrastructure network using the DI-774.

Connections

Pressing the

Reset Button

restores the router to its original factory default settings.

LAN ports automatically sense cable type when connecting to Ethernetenabled computers.

The WAN port is the connection for the Ethernet cable to the Cable or DSL modem

Receptor for the

Power Adapter

Features & Benefits

Supports data transfer rates of up to 54 Mbps in 2.4GHz and 5 GHz

frequency spectrums Wireless range of up to 900 feet*

802.11a, 802.11g, and 802.11b compatible Supports up to 152-bit WEP Encryption at 2.4GHz, and up to 152-bit WEP

with Enhanced Dynamic Keying at 5 GHz

Eight non-overlapping channels in 5GHz; Three non-overlapping channels in

2.4 GHz Utilizes Direct Sequence Spread Spectrum (DSSS) and Orthogonal

Frequency Division Multiplexing (OFDM) at 2.4GHz Utilizes Orthogonal Frequency Division Multiplexing (OFDM)

Easy-to-use Web-based configuration User level security

3 Year Warranty (USA only)

*Environmental Factors may Adversely Affect Range.

LEDS

Wireless Basics

LED stands for Light-Emitting Diode. The DI-774 has the following LEDs:

LED LED Activity

Power

WAN

WLAN

802.11a

WLAN

802.11g

Local Network

(Ports 1-4)

A steady light indicates a connection to a power source

A solid light indicates that the DI-774 is ready

A solid light indicates that the unit is defective

A solid light indicates connection on the WAN port. This LED blinks during data transmission.

A solid light indicates that the 802.11a wireless segment is ready. The LED blinks during 802.11a wireless data transmission.

A solid light indicates that the 802.11g wireless segment is ready. The LED blinks during 802.11g wireless data transmission.

A solid light indicates a connection, a blinking light indicates data transmission to an Ethernet-enabled computer on ports 1-4.

Wireless Basics

D-Link wireless products are based on industry standards to provide easy-touse and compatible high-speed wireless connectivity within your home, business or public access wireless networks. Strictly adhering to the IEEE standard, the D-Link wireless family of products will allow you to securely access the data you want, when and where you want it. You will be able to enjoy the freedom that wireless networking delivers.

A wireless local area network (WLAN) is a cellular computer network that transmits and receives data with radio signals instead of wires. Wireless LANs 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.

Under many circumstances, it may be desirable for mobile network devices to link to a conventional Ethernet LAN in order to use servers, printers or an Internet connection supplied through the wired LAN. A Wireless Router is a device used to provide this link.

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 (Wireless Local Area Networks)

are easy to set up, manage, change and relocate. Networks that frequently change, both physically and logically, can benefit from WLANs ease of implementation. WLANs can operate in locations where installation of wiring may be impractical.

Installation Speed and Simplicity - Installing a wireless LAN system

can be fast and easy and can eliminate the need to pull cable through walls and ceilings.

Network Expansion - Wireless technology allows the network to go where

wires cannot go.

Scalability – Wireless Local Area Networks (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.

Wireless Basics

1. The DI-774 is compatible with other D-Link Air Xpert A,B, and G

products, which include:

♦ 5GHz Wireless Cardbus Adapters used with laptop computers

(DWL-AG650)

♦ 5GHz Wireless PCI Adapters used with desktop computers

(DWL-AG520)

2. The DI-774 is also compatible with the D-Link AirPlusXtremeG 802.11g

wireless family, which includes :

♦ High-Speed 2.4GHz Wireless Cardbus Adapters used with laptop

computers (DWL-G650)

♦ High-Speed 2.4GHz Wireless PCI cards used with desktop

computers (DWL-G520)

3. The DI-774 is also compatible with the D-Link AirPlus 802.11b wireless

family, which includes :

Wireless Basics

OFDM reduces the amount of crosstalk (interference) in signal

transmissions. D-Link Air Xpert products will automatically sense the best possible connection speed to ensure the greatest speed and range possible.

The DI-774 is also interoperable with existing compatible 2.4GHz wireless devices with data transfer speeds of up to 54Mbps (with the D-Link AirPlusXtremeG family of wireless devices,) as well as standard 802.11b technology ( the D-Link AirPlus family of wireless devices), with speeds of up to 11Mbps.

Installation Considerations

The D-Link Air Xpert DI-774 lets you access your network, using a wireless connection, from virtually anywhere. 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. Typical 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:

♦ High-Speed 2.4GHz Wireless Cardbus Adapters used with laptop

computers (DWL-650+)

♦ High-Speed 2.4GHz Wireless PCI cards used with desktop

computers (DWL-520+)

Standards-Based Technology

The versatile DI-774 Wireless Router integrates 802.11a , 802.11b and

802.11g standards into a single unit. The 802.11a and 802.11g standards designate that devices may operate at

an optimal data rate of 54 Mbps. 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.

1. Keep the number of walls and ceilings between the DI-774 and your receiving device (e.g., the DWL-AG650) to a minimum each wall or ceiling

can reduce your D-Link Air Xpert Wireless product’s range from 3-90 feet (1-30 meters.) Position your receiving devices so that the number of walls or ceilings is minimized.

2. Be aware of the direct line between routers and computers. A wall that is

1.5 feet 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! Try to make sure that devices are positioned so that the signal will travel straight through a wall or ceiling for better reception.

3. Building Materials make a difference - a solid metal door or 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.

4. Keep your product away (at least 3-6 feet or 1-2 meters) from electrical devices or appliances that generate RF noise.

Getting Started

Right out of the box, with its default settings, the DI-774

will connect with other D-Link Air, AirPlus,

AirXtremeG, and Air Xpert products.

With a single IP Address from your Broadband Internet Service provider you can share the Internet with all the computers on your local network, without sacrificing speed or security, using D-Link Air networking products.

IP ADDRESS

Note: If you are using a DHCP-capable router in your network setup, such as the DI-774, you will not need to assign a static IP Address.

If you need to assign IP Addresses to the computers on the network,

please remember that the

the same IP Address range as all the computers in the network, and the Subnet mask must be exactly the same for all the computers in the network.

For example: If the first computer is assigned an IP Address of

192.168.0.2 with a Subnet Mask of 255.255.255.0, then the second computer can be assigned an IP Address of 192.168.0.3 with a Subnet Mask of 255.255.255.0, etc.

IMPORTANT: If computers or other devices are assigned the same IP Address, one or more of the devices may not be visible on the network.

IP Address for each computer must be in

Please remember that D-Link Air wireless devices are pre-configured to connect together, right out of the box, with the default settings.

For a typical wireless setup at home (as shown above), please do the following:

You will need broadband Internet access (Cable/DSL)

An Infrastructure wireless network contains an Access Point. The Infrastructure Network example, shown here, contains the following D-Link network devices:

A wireless Broadband Router - D-Link Air Xpert DI-774 A laptop computer with a wireless adapter - D-Link Air Xpert DWL-AG650 or Air PlusXtremeG DWL-G650 A desktop computer with a wireless adapter - D-Link Air Xpert DWL-AG520

or Air PlusXtremeG DWL-G520

A Cable modem - D-Link DCM-201

Consult with your Cable/DSL provider for proper installation of the modem

Connect the modem to the DI-774 router (see the Quick Installation Guide included with the DI-774. )

If you are connecting a desktop computer to your network, you can install the D-Link Air Xpert (DWL-AG520) wireless PCI adapter into an available PCI slot. (See the Quick Installation Guide included with the DWL-AG520)

If you are connecting a laptop computer to your network, install the drivers for the wireless cardbus adapter (D-Link Air Xpert DWL-AG650) into a laptop computer . (See the Quick Installation Guide included with D-Link AirXtremeG DWL-AG650.)

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Using the Configuration Menu

Whenever you want to configure your network or the DI-774, you can access the Configuration Menu by opening the web-browser and typing in the IP Address of the

DI-774. The DI-774 default IP Address is shown below:

n Open the web browser n Type in the IP Address of

the Router (http://192.168.0.1)

Note: if you have changed the default IP Address assigned to the DI-774, make sure to enter the correct IP Address.

n Type admin in the User

Name field

blank

Leave the Password

Click OK

Connect to 192.168.0.1

admin

Using the Configuration Menu

Home > Wireless > 802.11a

The Home>Wizard screen will appear. Please refer to the Quick Installation Guide for more information regarding the Setup Wizard.

Home > Wizard

Wireless Settings- choose 802.11a or 802.11g. Here, 802.11a is selected.

SSID-

Channel-

Turbo Mode-

If you enable Turbo mode on the DI-774, make sure to also enable Turbo mode on all 802.11a wireless clients or a wireless connection will not be established.

“default” is the default setting. All devices on the network must share the same SSID. If you change the default setting, the

SSID may be up to 32 characters long.

52 is the default channel for 802.11g. All devices on the network must share the same channel.

select ON or OFF. The default setting is OFF.

WEP- select Enabled or Disabled. Disabled is the default setting.

WEP Encryption-

WEP (Wired Equivalent Privacy) If you enable encryption on the DI-774 make sure to also enable encryption on all 802.11a wireless clients or

wireless connection will not be established.

select the level of encryption desired: 64, 128 or 152-bit

Key Type- select HEX or ASCII

Hexadecimal digits consist of the numbers 0-9 and the letters A-F ASCII (American Standard Code for Information Interchange) is a code for

representing English letters as numbers from 0-127

Keys 1-4-

input up to 4 WEP keys; select the one you wish to use.

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Using the Configuration Menu

Home > Wireless > 802.11g

Wireless Settings- choose 802.11a or 802.11g. Here, 802.11g is selected. SSID- “default” is the default setting. All devices on the network must

share the same SSID. The SSID may be up to 32 characters long.

Channel-

1 is the default channel for 802.11g. All devices on the network

must share the same channel.

WEP- select Enabled or Disabled. Disabled is the default setting.

Dynamic IP Address-

Host Name-

Home > WAN > Dynamic IP Address

most Cable modem users will select this option to obtain an IP Address automatically from their ISP (Internet Service Provider).

this is optional, but may be required by some ISPs. The host name is the device name of the Router.

WEP Encryption-

WEP (Wired Equivalent Privacy) If you enable encryption on the DI-774 make sure to also enable encryption on all 802.11g wireless clients or

wireless connection will not be established.

Key Type-

Keys 1-4-

select the level of encryption desired: 64, 128 or 152-bit

select HEX or ASCII

input up to 4 WEP keys; select the one you wish to use.

MAC Address- the default MAC Address is set to the WAN’s physical interface

MAC address on the Router.

Clone MAC Address-

Primary/Secondary DNS-

MTU-

copy the MAC address of the Ethernet card installed by your ISP, and replace the WAN MAC address with this Ethernet card MAC address. It is not recommended that you change the default MAC address unless required by your ISP.

enter a DNS Address if you do not wish to use the one provided by your ISP.

enter an MTU value only if required by your ISP. Otherwise, leave this section to its default setting of 1500.

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Using the Configuration Menu

Home > WAN > Static IP Address

Static IP Address-

IP Address-

select this option to set static IP information provided to you by your ISP.

input the IP Address provided by your ISP

Home > WAN > PPPoE

Please be sure to remove any existing PPPoE client software installed on your computers.

Subnet Mask-

ISP Gateway Address-

Primary / Secondary DNS Address-

MTU-

input your Subnet mask. (All devices in the network must have the same subnet mask.)

input the Gateway address

enter a DNS Address if you do not wish to use the one provided by your ISP.

enter an MTU value only if required by your ISP. Otherwise, leave this section to its default setting of 1500.

PPPoE-

Choose this option if your ISP uses PPPoE. will select this option.)

Dynamic PPPoE- receive an IP Address automaticcally from

your ISP.

Static PPPoE- you have an assigned (static) IP Adress.

(Most DSL users

User Name- your PPPoE username provided by your ISP. Password- your PPPoE password provided by your ISP.

Retype Password- re-enter the PPPoE password Service Name-

enter the Service Name provided by your ISP (optional).

IP Address- this option is only available for Static PPPoE. Enter the static IP

Address for the PPPoE connection.

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Using the Configuration Menu

Home > WAN > PPPoE continued Primary/Secondary

DNS-

enter a DNS Address if you do not wish to use the one provided by your ISP.

Using the Configuration Menu

Home > DHCP

Maximum Idle Time-

MTU-

Auto-reconnect-

enter a maximum idle time during which Internet connection is maintained during inactivity. To disable this feature, enter zero or enable Auto-reconnect.

Maximum Transmission Unit-1472 is default-you may need to change the MTU to conform with your ISP.

if enabled, the DI-774 will automatically connect to your ISP after your system is restarted or if the connection is dropped.

Home > LAN

LAN is short for Local Area Network. This is considered your internal network. These are the IP settings of the LAN interface for the DI-774. These settings may be referred to as Private settings. You may change the LAN IP address if needed. The LAN IP address is private to your internal network and cannot be seen on the Internet.

IP Address-

Subnet Mask-

Local Domain

the IP address of the LAN interface. The default IP address is:

192.168.0.1

the subnet mask of the LAN interface. The default subnet mask is 255.255.255.0

domain name assigned to the router

Name-

DHCP stands for Dynamic Host Control Protocol. The DI-774 has a built-in DHCP server.

The DHCP Server will automatically assign an IP address to the computers on the LAN/ private network. Be sure to set your computers to be DHCP clients by setting their TCP/ IP settings to “Obtain an IP Address Automatically.” When you turn your computers on, they will automatically load the proper TCP/IP settings provided by the DI-774. The DHCP Server will automatically allocate an unused IP address from the IP address pool to the requesting computer. You must specify the starting and ending address of the IP address pool.

DHCP Server-

select Enabled or Disabled

Starting IP Address- the starting IP address for the DHCP server’s IP assignment

Ending IP Address-

the ending IP address for the DHCP server’s IP assignment

Lease Time- the length of time of the DHCP lease DHCP Client

displays a list of DHCP clients assigned by the router

Table-

1918

Using the Configuration Menu

Advanced > Virtual Server

Using the Configuration Menu

Advanced > Virtual Server continued

The DI-774 is also capable of port-redirection meaning incoming traffic to a particular port may be redirected to a different port on the server computer.

Each virtual service that is created will be listed at the bottom of the screen in the Virtual Servers List. There are pre-defined virtual services already in the table. You may use them by enabling them and assigning the server IP to use that particular virtual service.

The DI-774 can be configured as a virtual server so that remote users accessing Web or FTP services via the public IP address can be automatically redirected to local servers in the LAN (Local Area Network).

The DI-774 firewall feature filters out unrecognized packets to protect your LAN network so all computers networked with the DI-774 are invisible to the outside world. If you wish, you can make some of the LAN computers accessible from the Internet by enabling Virtual Server. Depending on the requested service, the DI-774 redirects the external service request to the appropriate server within the LAN network.

Virtual ServerName-

Private IP-

select Enabled or Disabled

enter the name referencing the virtual service the server computer in the LAN (Local Area Network) that will be

providing the virtual services.

Protocol Type- the protocol used for the virtual service

Private Port-

the port number of the service used by the Private IP computer

Public Port- the port number on the WAN (Wide Area Network)side that will

be used to access the virtual service.

Schedule-

Example #1: If you have a Web server that you wanted Internet users to access at all times, you would need to enable it. Web (HTTP) server is on LAN (Local Area Network) computer 192.168.0.25. HTTP uses port 80, TCP. Name: Web Server Private IP: 192.168.0.25 Protocol Type: TCP Private Port: 80 Public Port: 80

Schedule: always

The schedule of time when the virtual service will be enabled. The schedule may be set to Always, which will allow the particular service to always be enabled. If it is set to Time, select the time frame for the service to be enabled. If the system time is outside of the scheduled time, the service will

be disabled.

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Using the Configuration Menu

Advanced > Virtual Server continued

Click on this icon to edit the virtual service

Example #2: If you have an FTP server that you wanted Internet users to access by WAN port 2100 and only during the weekends, you would need to enable it as such. FTP server is on LAN computer 192.168.0.30. FTP uses port 21, TCP.

Name: FTP Server Private IP: 192.168.0.30 Protocol Type: TCP Private Port: 21 Public Port: 2100

Schedule: From: 01:00AM to 11:00PM, Sat to Sun

Click on this icon to delete the virtual service

All Internet users who want to access this FTP Server must connect to it from port 2100. This is an example of port redirection and can be useful in cases where there are many of the same servers on the LAN network.

Advanced > Applications

Some applications require multiple connections, such as Internet gaming, video conferencing, Internet telephony and others. These applications have difficulties working through NAT (Network Address Translation). Special Applications makes some of these applications work with the DI-774. If you need to run applications that require multiple connections, specify the port normally associated with an application in the “Trigger Port” field, select the protocol type as TCP or UDP, then enter the public ports associated with the trigger port to open them for inbound traffic.

The DI-774 provides some predefined applications in the table on the bottom of the web page. Select the application you want to use and enable it.

Note! Only one PC can use each Special Application tunnel.

Name:

this is the name referencing the special application.

Trigger Port: this is the port used to trigger the application. It can be either

a single port or a range of ports.

Trigger Type: this is the protocol used to trigger the special application. Public Port:

this is the port number on the WAN side that will be used to access the application. You may define a single port or a range of ports. You can use a comma to add multiple ports or port ranges.

Public Type: this is the protocol used for the special application.

2322

Using the Configuration Menu

Advanced > Filters > IP Filters

Filters are used to deny or allow LAN (Local Area Network) computers from accessing the Internet. The DI-774 can be setup to deny internal computers by their IP or MAC addresses. The DI-774 can also block users from accessing restricted web sites.

IP Filters-

IP-

Port-

Use IP Filters to deny LAN IP addresses from accessing the Internet. You can deny specific port numbers or all ports for the specific IP address.

the IP address of the LAN computer that will be denied access to the Internet.

the single port or port range that will be denied access to the Internet.

select the protocol typeProtocol Types-

Advanced > Filters > URL Blocking

URL Blocking is used to deny LAN computers from accessing specific web sites by its URL. A URL is a specially formatted text string that defines a location on the Internet. If any part of the URL contains the blocked word, the site will not be accessible and the web page will not display.

Filters-

URL Blocking-

select the filter you wish to use; in this case, URL Blocking was chosen.

select Enabled or Disabled.

Keywords- block URLs which contain keywords listed below.

Enter the keywords in this space.

Schedule-

this is the schedule of time when the IP Filter will be enabled.

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