D-Link AirPlus G
TM DWL-G122 802.11g (2.4GHz) Wireless USB 2.0 Adapter Manual Building Networks for People Contents
Package Contents ................................................................................3
Features and Benefits ...........................................................................6
Wireless Basics ....................................................................................7
Installation Considerations ....................................................................8
Getting Started ......................................................................................9
Using the Configuration Utility .............................................................. 11
Using the Configuration Utility with Macintosh OS ...............................20
Networking Basics ..............................................................................24
Technical Specifications ......................................................................40
Contacting Technical Support ..............................................................42
Warranty and Registration ...................................................................43
2 Package Contents Contents of Package: D-Link AirPlusTM G DWL-G122 2.4 GHz Wireless USB 2.0 Adapter
Manual on CD-ROM
Quick Installation Guide
USB Extension Cable If any of the above items are missing, please contact your reseller. System Requirements:
A computer or laptop with an available USB port
Mac OS X (v10.2x or later)
At least 32MB of memory and a 300MHz processor
Properly installed and working USB Controller
The D-Link AirPlus G DWL-G122 Wireless USB Adapter is a convenient Plug & Play USB 2.0 solution that brings wireless networking to your laptop or desktop PC.
With transfer rates up to 54Mbps you can connect to a wireless network at home, at the office or at any wireless hotspot. Now you can stay connected wherever you are and wherever you go.
The DWL-G122 is Wi-Fi compliant, meaning that it can connect and interoperate with other 802.11b or 802.11g Wi-Fi-compliant wireless routers, access points and adapters. The DWL-G122 connects to any available USB port on a laptop or desktop Windows and Macintosh-based computer and also includes a standard USB extension cable. With the optional USB extension cable, the DWL-G122 can be positioned virtually anywhere at a workstation to achieve the best available wireless signal reception - whether that workstation is in your office, on your deck or patio, by the pool, at the local coffee shop, or in an airport terminal while waiting to board your next flight.
The adapter works with Apple Mac OS X (v10.2x or later) Jaguar, Microsoft Windows XP, Windows 2000 and other Windows operating systems to ensure that youâ€™ll be up and running on a wireless network in just a matter of seconds.
Using its default settings, the DWL-G122 automatically connects to other D- Link Air or AirPlus wireless products as soon as itâ€™s active.
In addition to featuring 64- or 128-bit WEP encryption, the DWL-G122 offers the added security of WPA (Wi-Fi Protected Access) when used with other WPA devices in a network with a RADIUS server.
For home users that will not incorporate a RADIUS server in their network, the security for the DWL-G122, used in conjunction with other WPA-compatible 802.11 products, will still be much stronger than ever before. Utilizing the Pre- Shared Key mode of WPA, the DWL-G122 will obtain a new security key every time it connects to the 802.11 network. You only need to input your encryption information once in the configuration menu. No longer will you have to manually input a new WEP key frequently to ensure security. With the DWL-G122, you will automatically receive a new key every time you connect, vastly increasing the safety of your communication.
4 Features and Benefits Provides high-speed wireless connection at up to 54Mbps Compact size for placement anywhere Convenience of Plug & Play installation Fully 802.11b/802.11g compatible Powered by the USB port; no external power source is required USB 2.0 standard Better Security with WPA1 - In addition to 64-,128-bit WEP encryption, you can also securely connect to a wireless network using WPA (Wi-Fi Protected Access) providing you a much higher level of security for your data and communication than has previously been available. Optimal wireless reception using its USB cable (included). Position the DWL-G122 almost anywhere in your workspace to achieve the best reception possible. Supports Infrastructure networks via an access point and Peer-to-Peer communication in Ad-Hoc mode User-friendly configuration and diagnostic utilities Connects at up to 328 feet indoors2 One year warranty
** 1 WPA will be available soon as a download for Mac users 2 Environmental factors may adversely affect range
5 Wireless Basics
D-Linkwireless 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. You will be able to enjoy the freedom that wireless networking brings.
A wireless local area network (WLAN) is a 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 to 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 WLAN 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. Inexpensive Solution - Wireless network devices are as competitively priced as conventional Ethernet network devices. Scalability - WLANs can be configured in a variety of ways 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.
6 Wireless Basics (continued) Installation Considerations
The DWL-G122 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. 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: 1 Keep the number of walls and ceilings between the DWL-G122 and
other network devices to a minimum - each wall or ceiling can reduce your DWL-G122â€™s range from 3-90 feet (1-30 meters.) Position your devices so that the number of walls or ceilings is minimized. 2 Be aware of the direct line between network devices. 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! Position devices so that the signal will travel straight through a wall or ceiling (instead of at an angle) for better reception. 3 Building materials can impede the wireless signal - 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.
7 Getting Started With its default settings, the DWL-G122 will connect with other D-Link AirPlus G product
TM s, right out of the box.
There are basically two modes of networking: Infrastructure â€“ using an access point or router, such as the DI-624. Ad-Hoc â€“ directly connecting to another computer, for Peer-to-Peer communication, using wireless network adapters on each computer, such as two or more DWL-G122 Wireless Network USB adapters.
On the following pages we will show you an example of an Infrastructure Network and an Ad-Hoc Network.
An Infrastructure network contains an access point or router. The Infrastructure network example shown on the following page contains the following D-Link network devices (your existing network may be comprised of other devices):
A wireless router - D-Link AirPlusTM G DI-524
A laptop computer with a D-Link AirPlus G DWL-G122
A desktop computer with a D-Link AirPlus G DWL-G120
A cable modem - D-Link DCM-201
Getting Started (continued) Setting up a Wireless Infrastructure Network
3 DWL-G122 DWL-G122
5 For a typical wireless setup at home (as shown above), please do the following:
You will need broadband Internet access (a cable or DSL-subscriber line into your home or office).
Consult with your cable or DSL provider for proper installation of the modem.
Connect the cable or DSL modem to your broadband router. (See the Quick Installation Guide included with your router.)
Install the D-Link AirPlus G DWL-G122 W
ireless USB adapter into an
available USB port on your desktop computer. (See the Quick Installa- tion Guide included with the DWL-G122.)
Install the D-Link AirPlus G DWL-G122 wireless USB adapter into an available USB port on your laptop computer. (See the Quick Installa- tion Guide included with the DWL-G122.)
Getting Started (continued) Setting up a Wireless Ad-Hoc Network
Wireless USB Adapter
Install the D-Link AirPlus G DWL-G122 Wireless USB adapter into the desktop computer. (See the Quick Installation Guide included with the product.)
Install the D-Link AirPlus GDWL-G122 Wireless USB adapter into the laptop computer. (See the Quick Installation Guide included with the product.)
Set the wireless configuration for the adapters to Ad-Hoc mode, set the adapters to the same channel, and assign an IP address to each computer on the Ad-Hoc network. IP Address
When assigning IP addresses to the computers on the network, please remember that the IP address for each computer must be in 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.
Using the Configuration Utility D-Link AirPlus G DWL-G122
uses the Configuration Utility as the
management software. The utility provides the user an easy interface to change any settings related to the wireless adapter. After you have completed the installation of the DWL-G122 (refer to the Quick Installation Guide that came with your purchase) whenever you start the computer, the Configuration Utility starts automatically and the system tray icon is loaded in the toolbar (see illustration below.*) Clicking on the utility icon will start the Configuration Utility. Another way to start the Configuration Utility is to click on Start>Programs>D-Link AirPlus G>D-Link AirPlus G Utility.
If you are using Windows XP, you can use either the Zero Configuration Utility or the D-Link Configuration Utility.
To use the D-Link Configuration Utility with XP, right-click on the wireless network icon in the taskbar in the lower right-hand corner of your computer screen.
In the window that appears, select View Available Wireless Networks and click the Advanced button.The screen at right will appear.
Select the Wireless Networks tab.
Uncheck the box in the properties window that enables windows configuration.
After you have done this, you can then use the D-Link Configuration Utility with XP by clicking on the D-Link Configuration Utility icon. *Configuration Utility icon in the system tray
If the icon does not display in the taskbar, then click on this icon on your desktop to open.
11 Using the Configuration Utility (continued) Link Info Status: Displays the MAC address of the access point or router to which the DWL- G122 is associated SSID: The Service Set Identifier is the name assigned to the wireless network. The fac- tory SSID setting is de- fault. Frequency: 802.11b indicates that the DWL-G122 is communi- cating in the 2.4GHz band. Wireless Mode: Either Infrastructure or Ad-Hoc will be displayed here. (Please see the Getting Started section in this manual for an explanation of these two modes.) Encryption: You can see if WEP (Wired Equivalent Privacy) is Enabled or Disabled here. Tx Rate: The default setting is Auto; Tx Rate settings are automatically determined for an optimal speed up to a maximum of 54Mbps. Channel: The default setting is Auto. The channel selection is automatically determined by the DWL-G122. Signal Strength: Displays the signal strength of the DWL-G122â€™s wireless connection to the access point or router. Packet Count: Displays the statistics of the data packets that are transmitted and received. Rescan Button: Rescans for the strongest signal with the current SSID and associates with that access point or router.
Using the Configuration Utility (continued) SSID: Configuration
Service Set Identifier is a name that identifies a wireless network. Access points and wireless devices attempting to connect to a specific WLAN (Wireless Local Area Network) must use the same SSID. The default setting is default. Wireless Mode:
Click on the pull-down menu; select from the following options: Infrastructure - connecting to the WLAN using an access point. (This is the default setting). IP Settings Ad-Hoc â€“ wireless mode used when connecting directly to a computer equipped with a wireless adapter in a Peer-to-Peer environment. Data Encryption:
Select Enabled or Disabled. Authentication:
Choose one of the following modes: Open Authentication â€“ the DWL-G122 is visible to all devices on the network. Shared Authentication â€“ allows communication only with other devices with identical WEP settings. Auto â€“ will automatically adjust to the Authentication mode of the wireless access point or router. Key Length:
Select the key length and either ASCII (e.g., a word) or hexadecimal format. Keys 1-4: Select the default key. 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. IP Settings:
When you click IP Settings in the Configuration window, the pop-up screen above will appear. Configure the IP Settings in this window.
Click Apply to save changes.
13 Using the Configuration Utility (continued) Ad-Hoc Channel: Advanced
All devices in the Ad-Hoc network must be set to the same channel. Profile IP Settings:
You can Enable or Disable the IP Settings portion of your profile here. If you select Disable you will need to configure the IP address information each time you connect to a network. If you select Enable you will maintain the same IP address information each time you connect to a network. Power Mode: Disable -This default setting consumes the most power. Enable - This setting consumes the least power. Launch Utility on Startup:
Select Enable or Disable. Data Packet Parameter: Select the parameters here. Fragmentation Threshold: This value should remain at its default setting of 2432. If you experience a high packet error rate, you may slightly increase your Fragmentation Threshold within the value range of 256 to 2432. Setting the Fragmentation Threshold too low may result in poor performance. RTS Threshold:
This value should remain at its default setting of 2432. If inconsistent data flow is a problem, only a minor modification should be made.
Click Apply if you have made any changes.
14 Using the Configuration Utility (continued) Available Network: The top section of the window displays the Available Networks. Scroll up and down the list and highlight the network to which you wish to connect. Click on the Connect button. Profile: In the lower half of the screen, you can manage the profiles that you have cre- ated for the wireless network at home, at the office and in public places. Scroll up and down and highlight the profile that you wish to configure. You can Add or Remove a profile, or configure the Properties of the profile in order to connect with an available network. Site Survey Refresh: Click on Refresh to get the most updated list of avail- able networks. Configure: Highlight an existing net- work and click Configure; the configuration window on the next page will appear. Advanced: Highlight a network; click Advanced and the screen on the next page will ap- pear. Add: Click Add and the screen on the next page will appear. Remove: Highlight a network profile; click Remove to remove a network from the profile list. Properties: Highlight a network profile; click Properties and the screen on the next page will appear. Connect: Highlight a network profile; click Connect to connect to that network. Rescan: Click Rescan to rescan and connect to the strongest signal with the current SSID.
15 Using the Configuration Utility (continued) Site Survey > Add Advanced
In this window you can select the type of network connection.
Click OK to save the changes.
If you clicked on Add, you can configure, in this window, all the Configuration, Add or Properties
properties of a profile that you wish to add to the network.
If you clicked on Configuration or Properties you can config- ure, in this window, all the prop- erties of a profile that already exists in the network.
If you select WPA in the Authentication field, please see detailed instructions for configuring WPA on the following pages.
Click OK to save the changes.
16 Using the Configuration Utility (continued) Authentication > WPA
Select the available network to which you want to connect.
Select WPA in the Authentication field.
Click Authentication Config
After you click Authentication Config, the Advanced Security Settings screen will ap- pear. Complete the Advanced Security Settings configuration. Please see pages 17-20 of this manual to find out more about the Advanced Security Settings.
Using the Configuration Utility (continued) Authentication > WPA-PSK
Select the available network to which you want to connect.
Click Configure. WPA-PSK does not require a RADIUS Server in the network.
Select WPA-PSK in the Authentication field.
Click Authentication Config
18 Using the Configuration Utility (continued) Authentication > WPA-PSK (continued) Advanced Security Settings
Enter the WPA Passphrase.
Click OK. The configuration is done. About
The About screen gives you the MAC address, Utility Version and the Driver Version of the DWL-G122.
19 Using the Configuration Utility with Macintosh OS
After you have completed the installation of the DWL-G122 into your Macintosh computer (please refer to the Quick Installation Guide included with the product), follow the steps below to access the configuration settings.
From the Apple pull-down menu select System Preferences.
Double-click on the Wireless Adaptor icon.
20 Using the Configuration Utility with Macintosh OS (continued)
This window will ap- pear displaying the following: Current Wireless Network settings: Network Name; Net- work Type; Link Sta- tus; Channel; and Signal Strength. Available Wireless Networks includ- ing: Name; Type; Signal; Channel; Privacy. Start Scan: Click Start Scanto rescan for an avail- able wireless net- work at your current location. Connect: Highlight a network profile and click Connect to connect to that net- work profile. Wireless Adaptor Settings: Radio On: Select or deselect Frequency Band: Displays the frequency band; default is 2.4GHz (may not be changeable).
Click Show My Networks to manage your network profiles.
21 Using the Configuration Utility with Macintosh OS (continued) My Networks Connect: Highlight a network profile and click Connect to connect to that net- work profile. Properties: Highlight a network profile and click Properties to configure that network profile. (See screens on the next page.) Remove: Highlight a network profile and click Remove to remove that network from the profile list. Create: Click Create to create a new network profile, manually. (See screens on the next page.)
Using the Configuration Utility with Macintosh OS (continued) My Networks > Create and/or Properties
Select the level of WEP encryp- tion. In the example, 40 Bits ASCII was chosen.
Enter the WEP string, in this case 5 ASCII characters have been entered.
Select the key that you wish to use. You can input up to four keys.
23 Networking Basics Using the Network Setup Wizard in Windows XP
In this section you will learn how to establish a network at home or work, using Microsoft Windows XP. Note: Please refer to websites such as http://www.homenethelp.com and http://www.microsoft.com/windows2000 for information about networking computers using Windows 2000/Me/98SE.
Go to Start>Control Panel>Network Connections Select Set up a home or small office network
When this screen appears, click Next.
Networking Basics (continued)
Please follow all the instructions in this window:
In the following window, select the best description of your computer. If your computer connects to the Internet through a router, select the second option as shown.
Networking Basics (continued)
Enter a Computer description and a Computer name (optional.)
Enter a Workgroup name. All computers on your network should havethe same Workgroup name.
Networking Basics (continued)
Please wait while the Network Setup Wizard applies the changes.
When the changes are complete, click Next.
Please wait while the Network Setup Wizard configures the computer. This may take a few minutes.
Networking Basics (continued)
In the window below, select the option that fits your needs. In this example, Create a Network Setup Disk has been selected. You will run this disk on each of the computers on your network. Click Next.
Insert a disk into the Floppy Disk Drive, in this case drive A.
Networking Basics (continued)
Please read the information under Hereâ€™s how in the screen below. After you complete the Network Setup Wizard you will use the Network Setup Disk to run the Network Setup Wizard once on each of the computers on your net- work. To continue click Next.
29 Networking Basics (continued)
Please read the information on this screen, then click Finish to complete the Network Setup Wizard.
The new settings will take effect when you restart the computer. Click Yes to restart the computer.
You have completed configuring this computer. Next, you will need to run the Network Setup Disk on all the other computers on your network. After running the Network Setup Disk on all your computers, your new wireless network will be ready to use.
Networking Basics (continued) Naming Your Computer
To name your computer in Windows XP, please follow these directions:
Click Start (in the lower left corner of the screen) Right-click on My Computer
Select the Computer Name Tab in the Sys- tem Properties window.
You may enter a Com- puter Description if you wish; this field is optional.
To rename the computer and join a domain, click Change.
31 Networking Basics (continued) Naming Your Computer
In this window, enter the Computer name.
Select Workgroup and enter the name of the Workgroup.
All computers on your network must have the same Workgroup name.
Click OK. Checking the IP Address in Windows XP
All wireless adapter-equipped computers in your network must be in the same IP address range (see Getting Started in this manual for a definition of IP address range.) To check on the IP address of an adapter, please do the follow- ing:
Right-clickon the Local Area Connection icon in the task bar.
32 Networking Basics (continued) Checking the IP Address in Windows XP
This window will appear.
Click the Support tab.
Click Close. Assigning a Static IP Address in Windows XP/2000 Note: Many broadband routers will automatically assign IP addresses to the com- puters on the network, using DHCP (Dynamic Host Configuration Protocol) tech- nology. If you are using a DHCP-capable router you will not need to assign static IP addresses.
If you are not using a DHCP capable router, or you need to assign a static IP address, please follow these instructions:
Go to Start.
Double-click on Control Panel.
33 Networking Basics (continued) Assigning a Static IP Address in Windows XP/2000
Double-click on Network Connections.
Right-click on Local Area Connections.
Double-click on Properties.