PKW-WPC54AWireless Network PC Card

WPC54A 802.11a PC Card User’s Manual Draft v. 1.0 2 Table of Contents 1. INTRODUCTION4 1.1 SCOPE4 1.2 OBJECTIVES4 1.3 INTENDED AUDIENCE4 1.4 FEATURES4 1.5 PACKAGE CONTENTS5 1.6 SYSTEM REOUIREMENTS5 2WINDOWS 20007 2.1 DRIVER INSTALLATION (FIRST-TIME INSTALL)7 2.2 DRIVER INSTALLATION (PREVIOUS DRIVER INSTALLED)13 2.3 DRIVER INSTALLATION (EXISTING DK DRIVER INSTALLED)23 2.4 DRIVER UNINSTALLATION30 2.5 DEVICE CONFIGURATION34 2.5.1Infrastructure Mode38 2.5.2Ad Hoc Mode39 2.5.3TCP/IP Setup40 3WINDOWS MILLENNIUM EDITION44 3.1 DRIVER INSTALLATION44 3.2 DRIVER UNINSTALLATION47 3.3 DEVICE CONFIGURATION49 3.3.1Infrastructure Mode50 3.3.2Ad Hoc Mode52 3.3.3TCP/IP Configuration54 4WINDOWS 98 SECOND EDITION56 4.1 DRIVER INSTALLATION56 4.2 DRIVER UNINSTALLATION59 4.3 DEVICE CONFIGURATION62 4.3.1Infrastructure Mode63 4.3.2Ad Hoc Mode66 4.3.3TCP/IP Setup68 3 5WINDOWS XP70 5.1 DRIVER INSTALLATION (FIRST-TIME INSTALL)70 5.2 DRIVER UNINSTALLATION73 5.3 DEVICE CONFIGURATION75 5.3.1Infrastructure Mode77 5.3.2Ad Hoc Mode78 5.3.3TCP/IP Setup80 5.4 WINDOWS XP WIRELESS LAN NETWORK CONFIGURATION85 5.4.1Infrastructure Mode87 5.4.2Ad hoc mode 89 5.4.3Connect to an Available Wireless LAN Network91 6WINDOWS NT 4.097 6.1 DRIVER INSTALLATION AND TCP/IP SETUP97 6.2 DEVICE CONFIGURATION102 6.2.1Infrastructure Mode103 6.2.2Ad Hoc Mode106 6.2.3Verify Connection108 6.3 DRIVER UN-INSTALLATION110 7LINKMON113 7.1 INSTALLATION113 7.2 FEATURES116 8COUNTRY CODE SELECTOR123 9TROUBLESHOOTING125 APPENDIX A -- CHANNEL AND DATA RATE SELECTION126 4 1 Introduction 1.1 Scope This user's guide provides the necessary information for first-time users to successfully install the 802.11a Network Driver Interface Specification (NDIS) driver, for the purpose of evaluating and/or operating the 802.11a Station in a Microsoft Windows environment. This guide also provides information for users who wish to upgrade the 802.11a NDIS driver from previous releases. 1.2 Objectives This guide describes the steps required to install NDIS drivers for the 802.11a Wireless LAN Network Adapter in Windows 2000, Windows Millennium Edition, Windows 98 Second Edition, Windows XP, and Windows NT 4.0. This guide also includes detailed instructions for configuring the PC Card device, or IEEE 802.11a station (STA) to interact with an access point (AP) in infrastructure mode and with other STAs in ad hoc mode. Instructions for installing or upgrading the diagnostic utility LinkMon are also included. You should also read this before proceeding to install the 802.11a Wireless LAN Network Adapter and NDIS driver in the targeted operating system (OS) environment. 1.3 Intended Audience This document is intended for 802.11a customers who wish to install and evaluate the 802.11a PC Card in the supported Microsoft Windows environments. 1.4 Features The 802.11a Wireless LAN Network Adapter is an IEEE 802.11a two-chip solution reference design based on the 802.11a AR5110 and AR5210 chipset. This reference design implements a half-duplex, Orthogonal Frequency Division Multiplexing (OFDM) baseband processor supporting all IEEE 802.11a data rates (6 to 54 Mbps). It also supports the 802.11a Turbo Mode TM supporting data rates up to 72 Mbps. The host interface is compliant with the PC Card 7. 1 standard. 5 1.5 Package Contents Make sure the following materials are available before you begin:
802.11a CD, or electronic equivalent
802.11a Wireless LAN Network Adapter 1.6 System Reguirements
Laptop PC containing:
32-bit CardBus slot (or Desktop PC with PC Card-PCI adapter)
32 MB memory or greater
300 MHz processor or higher
Microsoft Windows 2000/Windows Millennium Edition/Windows 98 Second Edition/Windows XP/Windows NT 4.0 (with Service Pack 6) 6 2Windows 2000 2.1 Driver Installation (First-time Install) We recommend that you remove any existing 802.11a drivers on the PC system before installing the new Version release of the NDIS driver. See Section 2.4 for the instructions on how to remove previous driver releases. Insert the 802.11a Wireless LAN Network Adapter into a 32-bit CardBus Slot and follow these steps to install the NDIS driver: 1. Wait for the following dialog box to display, and click Next to continue. 7 2. Choose "Search for a suitable driver for my device (recommended)," and click Next. 3. Insert the CD in your CD-ROM drive. Choose "Specify a location" under "Optional search locations”, and click Next to continue. 8 9 4. Browse to the location where the NDIS driver is located (assuming D: is the CD-ROM drive), the default folder is D: \ndis\bin\production\ndis Click OK to continue. 5. When you find the 802.11a driver installation file (net5210b.inf), click Next to continue. 10 6. The 802.11a NDIS evaluation driver currently does not have a digital signature from Microsoft. Therefore, Windows 2000 shows a warning message. Click Yes to proceed with driver installation. 7. Click Finish to complete the driver installation. See Section 2.5 for the device configuration. 11 2.2 Driver installation (Previous Driver Installed) If the system already has a previous release of the 802.11a NDIS installed, Windows does not prompt for the device driver when the WLAN Card is inserted. Follow the steps below to update NDIS driver: 1. Start System Properties from Control Panel. Under Hardware tab, click Device Manager. 12 2. Within Device Manager, right-click "802.11a Wireless LAN Network Adapter" under "Network adapters" device node, and click Properties. 13 3. Click "Update Driver..." from the Driver tab. Note the Driver Version that you are updating from. You may need to verify this field again after driver update completes to make sure the driver has been updated correctly. 14 4. Click Next to continue. 15 5. Choose "Display a list of the known drivers for this device so that I can choose a specific driver," and click Next to continue.

16 6. Insert CD into your CD-ROM drive. Click "Have Disk..." to continue. 7. Browse to the location where the NDIS driver is located (assuming D is the CD-ROM drive), the default folder is "D:\ndis\bin\production\ndis5". Click OK to continue. 17 8. Select "802.11a Wireless LAN Network Adapter" from the list and click Next to continue. 9. Click Yes to continue when Windows displays the warning message. 18 10. Click Next to proceed with installation. 11. The 802.11a NDIS evaluation driver currently does not have a digital signature from Microsoft. Therefore, Windows 2000 shows a warning message. Click Yes to proceed with driver installation. 19 12. Click Finish. 20 13. Note that Driver Version should display 1.2 as the major revision number. Click OK to continue. 14. Click Yes to restart system. 21 15. After system restarts, the "802.11a Wireless LAN Network Adapter" now displays under "Network Adapters" in the Device Manager. Proceed to Section 2.5 for device configuration information. 22 2.3 Driver Installation (Existing DK Driver Installed) If the system already has the 802.11a Diagnostic Kernel (DK) installed, Windows does not prompt for the device driver when the WLAN Card is inserted. Follow these steps to switch from the DK driver to the NDIS driver: 1. Start System Properties from Control Panel. Under Hardware tab, click Device Manager. 2. Within Device Manager, right-click "802.11a Diagnostic Kernel Driver" under "802.11aDK" device node, and click Properties. 23 3. Click "Update Driver..." from the Driver tab. 4. Click Next to continue. 24 5. Choose "Search for a suitable driver for my device (recommended)," and click Next to continue. 6. Insert the CD into your CD-ROM drive. Choose "Specify a location" under "Optional search locations," and click Next to continue. 25 7. Browse to the location where the NDIS driver is located (assuming D: is the CD-ROM drive), the default folder is "D:\ndis\bin\production\ndis5". Click OK to continue. 8. Ensure the "Install one of the other drivers" check box is checked, and click Next to continue.

26 9. A list of available device drivers displays on the screen. Choose "802.11a Wireless LAN Network Adapter," and click Next to continue. 10. The 802.11a NDIS evaluation driver currently does not have a digital signature from Microsoft. Therefore, Windows 2000 shows a warning message. Click Yes to proceed with driver installation. 27 11. Click Finish. 12. The "802.11a Wireless LAN Network Adapter" now displays under "Network Adapters" in the Device Manager. Proceed to Section 2.5 for device configuration information. 28 13. To revert back to the DK driver, follow the instructions given in the Diagnostic Kernel (DK): Script Programming Interface document. 2.4 Driver Uninsfallafion This section provides information about uninstallation procedures required for upgrading the NDIS driver from previous 802.11a software releases. If the system does not have previously installed versions of the NDIS driver and you wish to remove the newly installed driver from the system, proceed to Step 4. The NDIS driver since Release 1.0 no longer leverages the Transport Driver Interface (TDI) protocol to provide the LinkMon programming interface, the TDI protocol should be uninstalled. Follow these steps to uninstall the TDI protocol: 1. Go to "Network and Dial-up Connections" in the Control Panel. 2. Right-click the 802.11a Wireless LAN Network Adapter "Local Area Connection" icon and choose Properties. 29 3. Choose "802.11a NIC Access TDI" and click Uninstall. 4. Click Yes to confirm the uninstallation of the TDI interface. 5. To remove the NDIS driver from the OS, go to Device Manager, right-click "802.11a Wireless LAN Network Adapter #4," and choose Uninstall. 30 6. Click OK to uninstall the device. 31 7. When the device is uninstalled from Device Manager, search for and delete the driver files that reside in the system. To do so, go to the Start menu and choose "Search For Files or Folders...," enter "oem*.inf" in the "Search for files or folders named:" field, and enter "802.11a" in the "Containing text:" field. Click Search Now, two files matching these criteria are displayed. Choose the files that have been found and delete them from the system. 8. To complete the uninstallation, two driver binary files, "ar52l0b.sys" and "athtdint.sys", should also be removed from the "\WINNT\system32\drivers" folder. 32 9. If there is a file named "athnic.ini" in the "\WINNT\system32\drivers" folder, delete it. 33 2.5 Device Configuration Configuration of the 802.11a Wireless LAN Network Adapter can be done through the Network Control Panel (NCP) in adapter properties. You can set the Wireless Network Adapter to work in one of two modes, either infrastructure mode (Which leverages an AP) or ad hoc mode (which consists of a group of stations participating in the WLAN). In infrastructure mode, the Wireless LAN Network Adapter participates in a basic service set (BSS) as a station, and communicates with the other stations through an AP, as illustrated in Figure 1. In ad hoc mode, a Wireless LAN Network Adapter works within an independent basic service set (IBSS), as illustrated in Figure 2. All stations communicate directly with other stations without an AP. 34 To configure the 802.11a Wireless LAN Network Adapter: 1. In the Device Manager, right-click "802.11a Wireless LAN Network Adapter," and click Properties to access the properties of the adapter. 35 2. Configuration additions, modifications, and deletions are made under the "Settings" tab of the "802.11a Wireless LAN Network Adapter" properties. Select one of the configurations under the configuration list, and click Modify to show the "Network Configuration Settings" screen. This property sheet has two pages: General and Security. The General page has the following fields:
Configuration Name: This field identifies the configuration. This name must be unique. Configuration names are case insensitive.
Network Name (SSID): This is the name of the IEEE 802.11a Wireless LAN Network, for example, "802.11 Wireless LAN Network." This field has a maximum limit of 32 characters.
Network Connection: This field defines whether the STA is configured for an ad hoc or infrastructure network.
Power Saving: This field allows the configuration of power management options. The options are Off, Normal and Maximum. Power management is disabled when ad hoc mode is selected in the Network Connection field. When the Power saving setting is Off, the adapter receives full power from the PC. When the Power Saving setting is Normal, the driver turns off power to the adapter for brief periods over briefly-spaced time intervals. When the Power Saving setting is Maximum, the driver turns off power to the adapter for longer periods over more widely-spaced time intervals.
Turbo Mode: This field enables or disables 802.11a turbo mode.
Locally Administered Address: This field defines the locally administered MAC address (LAA). To enter a value in the address field, the check box needs to be selected. Typically, an LAA is not required, because as the driver automatically loads a unique, globally administered address from the EEPROM.

36 3. The next tab on this property sheet allows for the selection of security features. The fields on this page are as follows:
Enable Security: This field completely enables or disables the IEEE 802.11 wired equivalent privacy (WEP) security feature.
Default Encryption Key: This field defines the type of encryption key to use (either Unique Key or Shared Keys). This field allows you to select only a key (Unique, First, Second, Third, or Fourth) whose corresponding field has been completed.
Unique Key: This field defines the unique encryption key for security for the current network configuration. In ad hoc mode, this encryption key type is not used. To enable security using a Unique Key, this field must be populated.
Shared Keys: These fields define a set of Shared encryption keys. To enable security using Shared Keys, at least one Shared Key field must be populated.
Key Length: This field defines the length for each encryption key. As the Key Length is changed, the number of available characters in the field is changed automatically. If after a key is entered the length is adjusted to a smaller number, the key is automatically truncated to fit. If the length is increased again, the field is not automatically updated to its previous value. 37 All encryption key fields are displayed only when initially entered. On subsequent entry into the security property page, the fields are masked. The keys must be entered as hexadecimal digits. 2.5.1 Infrastructure Mode To configure an 802.11a Wireless LAN Network Adapter in infrastructure mode: 1. Ensure that the "Locally Administered Address" checkbox is unchecked 2. Choose the following settings:
Configuration Name: This field identifies the configuration. This name must be unique. Configuration names are case insensitive.
Network Name (SSID): This is the name of the IEEE 802.11a Wireless LAN Network, for example, "802.11a Wireless LAN Network." This field has a maximum limit of 32 characters. If this field is left blank, the STA connects to the AP with the best signal strength.
Network Connection: AP (infrastructure).
Power Saving: This field allows the configuration of power management options. The options are Off, Normal, and Maximum.
Turbo Mode: This field enables or disables 802.11a turbo mode.
Locally Administered Address: This field defines the locally administered MAC address (LAA). To enter a value in the address field, the check box needs to he selected. Usually infrastructure mode is used in an enterprise environment where APs are installed and maintained by corporate IT staff. Much of the data in the enterprise network is confidential. It is important to configure security to make sure only stations with appropriate keys can receive sensitive data. The 802.11a Wireless LAN Network Adapter and NDIS driver support key lengths of 40 bits, 104 bits, and 128 bits. Typically, the appropriate encryption and decryption keys are supplied by the corporate IT staff. 38 2.5.2 Ad Hoc Mode An ad hoc network usually is a short-lived network with a small number of stations. The network is usually created for a special purpose such as exchanging data between friends, or between customer and client. Because the duration of the ad hoc network tends to be limited, Power Saving and Security features are not typically a requirement. For ad hoc network activity, the Power Saving and Security features can be disabled. Currently, shared key security is supported in ad hoc mode. Future 802.11a software implementations will provide unique key support. In ad hoc mode, a station scans the air for an existing BSS. If no BSS is found, the station establishes a BSS for other stations to join. When other stations scan the air and find an established BSS in place, they join that BSS to form an ad hoc network. If a specific set of stations requires ad hoc network connectivity, it is recommended to have one station establish a BSS first before configuring the remaining stations. This prevents the scenario of several stations trying to form a BSS at the same time, which can result in multiple singular BSSs being established, rather than a single BSS with multiple stations.
Configuration Name: This field identifies the configuration. This name must be unique. Configuration names are case insensitive.
Network Name (SSID): A Network Name is mandatory for ad hoc mode. The SSID for all stations in a single ad hoc network must be the same.
Network Connection: Ad Hoc.
Power Saving: Power saving mode is not currently supported in an ad hoc network.
Turbo Mode: All stations participating in the ad hoc network must have the same rate setting.
Locally Administered Address: This field defines the locally administered MAC address (LAA). To enter a value in the address field, the check box needs to be selected. 39 2.5.3 TCP/IP Setup After configuring the 802.11a Wireless LAN Network Adapter through the Network Control Panel, the TCP/IP address for the network device must be configured. 1. Open the "Control Panel" and click "Network and Dial-up Connections." 2. Find the "Local Area Connection" that is associated with the 802.11a Wireless LAN Network Adapter. Right-click that connection, and click Properties. 3. Select "Internet Protocol (TCP/IP)" and click Properties. 4. Click "Use the following IP address" and input an IP address and Subnet mask. Assigning an LP address and Subnet mask allows stations to operate in infrastructure mode and to have Internet access. "Default gateway" and "DNS server" information is also required. IP configuration information (DHCP or assigned IP address, Gateway and DNS server IP addresses) is usually obtained from the corporate IT staff. 5. After obtaining IP configuration information from the appropriate IT staff, Click OK in both "Internet Protocol (TCP/IP) Properties" and "Local Area Connection Properties" to complete the IP configuration. 40 6. Click Start, Programs, Accessories, and Command Prompt to open the DOS …

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56 2 Click "Start, " "Programs", "Accessories", and "Command Prompt" to open the DOS command prompt window. Type "ipconfig" to determine if the TCP/IP configuration has taken effect. To test IP connectivity in ad hoc or infrastructure mode, use the "ping <ipaddress>" command. When a TCP/IP connection is established, the LinkMon utility (see Section 6) can be used to monitor the 802.11a Wireless LAN Network Adapter operating status. 3 To map the drive on another machine to your computer, right-click "My Computer" and click "Map Network Drive...." Specify the path of a network-shared folder. 4 After mapping the drive, you can perform file transfers, video streaming, and all other network data transfers that are normally performed with wired 10/100 Ethernet connections. 57 4Windows 98 Second Edition 4.1 Driver installation Atherus recommends that you remove any existing 802.11a NDIS driver on the PC system before installing Version 1.2 release of the NDIS driver. See Section 4.2 for the instructions on how to remove previous driver releases. When the system no longer has the 802.11a NDIS driver installed, insert the Wireless LAN Network Adapter into a 32-bit CardBus slot, and follow these steps to install the NDIS driver: 1. Wait far the following dialog box to appear, and click Next to continue. 58 2. Choose "Search for the best driver for your device (Recommended)," and click Next. 3. Insert the 802.11a Software Release CD in your CD-ROM drive Choose "Specify a location" and browse to the location where the NDIS driver is located. The default folder is D:\ndis\bin\production (assuming D: is the CD-ROM drive). Click Next to continue. 59 4. When the 802.11a driver installation file (802_11a.inf) has been found, click Next to continue. 5. Click Finish to continue. 60 6. Click Yes to restart the system and complete driver installation. See Section 4.3 for device configuration. 4.2 Driver Uninstallation This section provides uninstallation procedures for removing the 802.11a NDIS driver from the system. Uninstallation is recommended for upgrading the NDIS driver from previous 802.11a driver releases. 1. To remove the NDIS driver from the OS, go to "Start Menu" → "Search" → "Find Files or Folders...," and search for the INF file containing the "802_11a" text string under the \WINDOWS\INF folder. Be sure to include subfolders in the search criteria. 61 2. When "802_11a.inf" has been found, delete it by right-clicking the file and choose "Delete." 62 3. From Control Panel, launch the Network properties window. Select “802.11a Wireless LAN Network Adapter” from the list, and click Remove to uninstall the device. 4. Click OK to confirm the removal of the device. Restart the system to complete uninstallation. 63 4.3 Device Configuration Configuration of the 802.11a Wireless LAN Network Adapter can be done through the 802_11a NIC Configuration utility found in the Windows Control Panel. Similar to Windows 2000 the device can be set to work in one of two modes: infrastructure mode or ad hoc mode. Please refer to Section 2.5 for more details on these network connection types. To launch the configuration utility, go to Control Panel and double-click on the 802_11a NIC Configuration icon. The configuration utility allows addition, modification, and deletion of the configuration profiles. Select one of the existing configuration profiles under the configuration list to modify or click New to add a new configuration profile. Follow Section 4.3.1 and Section 4.3.2 to set up the station to work in infrastructure mode and ad hoc mode. 64 4.3.1 Infrastructure Mode This section defines the process of configuring an 802.11a Wireless LAN Network Adapter in infrastructure mode. See Section 2.4 for detailed descriptions of each option in the Network Configuration Settings. 1. Under the "General" tab, make sure the "Locally Administered Address" checkbox is unchecked. Use the following information as a guideline to choose the values of each field in the configuration window:
Configuration Name: This field identifies the configuration. This name must be unique. Configuration names are case insensitive.
Network Name (SSID): This is the name of the IEEE 802.11a Wireless LAN Network. This field has a maximum limit of 32 characters. If this field is left blank, the STA connects to the AP with the best signal strength.
Network Connection: AP (Infrastructure)
Power Saving: This field allows the configuration of power management options. The options are Off, Normal, and Maximum.
Turbo Mode: This field enables or disables 802.11a turbo mode. 65 66 2. Usually, infrastructure mode is used in an enterprise environment where APs are installed and maintained by corporate IT staff. Much of the data in the enterprise network is confidential. It is important to configure security to make sure only stations with appropriate keys can receive sensitive data. The 802.11a Wireless LAN Network Adapter and NDIS driver support key lengths of 40 bits, 104 bits and 128 bits. Typically, the appropriate encryption and decryption keys are supplied by the corporate IT staff. 67 4.3.2 Ad Hoc Mode This section defines the process of configuring an 802.11a Wireless LAN Network Adapter in ad hoc or IBSS mode. See Section 2.4.2 for descriptions of ad hoc operation. 1. Similar to the setup of the AP infrastructure mode described in the previous section, ad hoc mode is also configured by changing the Network Configuration Settings of the 802_11a NIC Configuration utility. Use the following information as a guideline to choose the values of each field in the configuration window:
Configuration Name: This field identifies the configuration. This name must be unique. Configuration names are case insensitive.
Network Name (SSID): A Network Name is mandatory for ad hoc mode. The SSID for all stations in a single ad hoc network must be the same.
Network Connection: Ad Hoc.
Power Saving: Power saving mode is not currently supported in an ad h…

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96 You can change the order of the preferred networks by selecting the Wireless LAN Network that you want to reposition on the list, and then clicking Move up or Move down. You can change the Wireless LAN Network connection settings of a preferred network by selecting the Wireless LAN Network, clicking Properties, and then changing the settings as needed. To remove a Wireless LAN Network from the list of preferred networks, select the Wireless LAN Network that you want to remove, and then click Remove. 97 If a network is not defined in the preferred networks list, but you know it is available and you want to automatically connect to it, then click Advanced in the Wireless LAN Networks tab, and select the “Automatically connect to non-preferred networks” check box. 98 6.Windows NT 4.0 6.1 Driver installation and TCP/IP Setup Windows NT 4.0 does not support Plug-and-plug. Therefore, the 802.11a NDIS driver installation uses an approach that is different from the installation used in other Operating Systems. In order to install 802.11a Wireless LAN Network Adapter in Windows NT 4.0, a PC Card utility called CardWizard is used. If your computer system does not have CardWizard utility pre-loaded then you can purchase it from SystemSoft Corporation (www.svstemsoft.com) or you can download a 14-day evaluation copy from ftp://www.systemsoft.com/pub/Wn51tren.exe. Note that CardWizard requires Windows NT 4.0 Build 1381 (Service Pack 6) installed in order to function correctly. Please install Service Pack 6 if your Windows NT 4.0 is not updated After CardWizard utility is loaded, insert the 802.11a Wireless LAN Network Adapter into a 32-bit CardBus slot, and follow these steps to install the NDIS driver: 1. 1. CardWizard will detect the insertion of the 802.11a CardBus card and show the following screen. Click Correct to Continue. 99 2. Click OK to continue. 3. Windows NT 4.0 Network Properties windows displays. Click Add to continue. 100 4. Click Have Disk. 5. Manually enter the location of where the 802.11a NDIS 4.0 driver is located. For example, D:\NDIS\BIN\NDIS4. Click OK to continue. 101 6. Make sure 802.11a Wireless LAN Network Adapter is selected. Click OK to continue. 7. Set Map Registers value to 256 (default value) and click Continue. 102 8. Windows NT 4.0 binds TCP/IP protocol to 802.11a Wireless LAN Network Adapters and TCP/IP properties have to be entered. Depending on the type of network the station connects to, Gateway and DNS Configuration information may also be required. IP configuration information (DHCP or assigned IP address, Gateway and DNS server IP addresses) is usually obtained from the corporate IT staff. For a simple demonstration, the station is assigned a static 1P address. Choose "Specify an IP address" and enter an IP address and subnet mask. Assigning an IP address and subnet mask allows the station to interact with the AP or other stations in the same IP subnet. Click OK to complete the TCP/IP configuration. 103 9. Restart the system for the changes to take effect. 6.2 Device Configuration Configuration of the 802.11a Wireless LAN Network Adapter can be done through the 802.11a NIC Configuration Control Panel applet . Similar to Windows 2000, the device can be set to work in one of two modes, either infrastructure mode or ad hoc mode. See Section 2.4 for more details on these network connection types. Start 802.11a NIC Configuration utility form the Control Panel. 104 Select one of the configuration(s) under the configuration list and click Modify or click New and follow the Section 6.2.1 and Section 6.2.2 to set up the station to work in infrastructure mode and ad hoc mode. 6.2.1Infrastructure Mode This section defines the process of configuring an 802.11a Wireless LAN Network Adapter in infrastructure mode. Refer to Section 2.4 for detailed descriptions of each option in the Network Configuration Settings. 1. Under the "General" tab, make sure the "Locally Administered Address" checkbox is unchecked. Use the following information as a guideline to choose the values of each field in the configuration window:
Configuration Name: This field identifies the configuration. This name must be unique. Configuration names are case insensitive. For example, "AP".
Network Name (SSID): This is the name of the IEEE 802.1 la Wireless LAN Network. For example, "802.11apP". This field has a maximum limit of32 characters. If 105 this field is left blank, the STA will connect to the AP with the best signal strength.
Network Connection: AP (Infrastructure)
Power Saving: This field allows the configuration of power management options. The options are Off, Normal and Maximum.
Turbo Mode: This field enables or disables 802.11a Turbo mode. 106 2. Usually, infrastructure mode is used in an enterprise environment where APs are installed and maintained by corporate IT staff. Much of the data in the enterprise network is confidentia…

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