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Cisco Aironet Wireless LAN Client Adapters

Release Notes for Cisco Aironet 802.11a/b/g Client Adapters (CB21AG and PI21AG) Install Wizard 4.0

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Release Notes for Cisco Aironet 802.11a/b/g Client Adapters (CB21AG and PI21AG) Install Wizard 4.0

Table Of Contents

Release Notes for Cisco Aironet 802.11a/b/g Client Adapters (CB21AG and PI21AG)
Install Wizard 4.0

Contents

Introduction

System Requirements

Important Notes

Transmit Power of Transmitted Packets Not Intended Power

PMKID Caching Not Working with CB21AG

Conflict between Cisco Security Agent 5.0 and the Install Wizard for the CB21AG or PI21AG

Mismatch between HP DC5 100 PCI Bus Controller and PCI Key Cache Register on PI21AG Chip

Installing the CB21AG Intermediate Driver Manually

Incompatibility between PACs Created by ACS 3.x.xx and ACS Version 4.0.xx

Conflict with Third-Party Supplicants

Customized Installation Images (Notice to IT Professionals)

Client Adapter Software Compatibility

Installing the Novell Client

Enabling CCKM Fast Secure Roaming

Access Point Setting for LEAP or EAP-FAST Authentication

EAP-FAST Fails When Access Point Configured as Local RADIUS Server

GINA Error on Bootup

Reboot Required When Uninstalling ACU and ADU

Uninstalling Software Components

Profiles for PC-Cardbus Cards

Auto Profile Selection Enables Scan of Wireless Modes in Auto-Selected Profiles

ASTU Exit Option

Windows Wireless Network Connection Icon Shows Unavailable Connection (Windows XP Only)

Supporting Documentation

New and Changed Information

Management Frame Protection

Installing or Upgrading Client Adapter Software

Installing the Client Adapter Software

Upgrading the Client Adapter Software

Installing a Microsoft Hot Fix for Group Policy Delay

Finding Version Numbers

Finding the Driver Version

Finding the ADU Version and Other Software Components

Caveats

Open Caveats

Resolved Caveats

Getting Bug Information on Cisco.com

Troubleshooting

Related Documentation

Obtaining Documentation, Obtaining Support, and Security Guidelines


Release Notes for Cisco Aironet 802.11a/b/g Client Adapters (CB21AG and PI21AG)
Install Wizard 4.0


Contents

This document contains the following sections:

Introduction

System Requirements

Important Notes

New and Changed Information

Installing or Upgrading Client Adapter Software

Installing a Microsoft Hot Fix for Group Policy Delay

Finding Version Numbers

Caveats

Troubleshooting

Related Documentation

Obtaining Documentation, Obtaining Support, and Security Guidelines

Introduction

This document describes system requirements, important notes, new and changed information, installation and upgrade procedures, caveats for CB21AG and PI21AG client adapter Install Wizard release 4.0, and the following software included in the Install Wizard file:

CB21AG and PI21AG client adapter driver release 4.0

Aironet Desktop Utility (ADU) release 4.0

Cisco Aironet Site Survey Utility release 1.5

System Requirements

You need the following items in order to install Install Wizard 4.0 and use its software components:

One of the following Cisco Aironet client adapters:

CB21AG PC-Cardbus card.

PI21AG PCI card.

A computer running the Windows 2000 or XP operating system.


Note Cisco recommends a 300-MHz (or greater) processor.


Service Pack 2 for Windows XP (Professional, Home); Service Pack 4 for Windows 2000.

20 MB of free hard disk space (minimum).

128 MB of RAM or greater (recommended).

If your wireless network uses EAP-TLS or PEAP authentication, you need Certificate Authority (CA) and user certificates for EAP-TLS authentication or CA certificate for PEAP authentication.

If your wireless network uses PEAP (EAP-GTC) authentication with a One-Time Password (OTP) user database, you need the following:

A hardware token device from OTP vendors or the Secure Computing SofToken program (2.1 or later).

Your hardware or software token password.

If your client adapter is installed on a Windows 2000 device and uses PEAP (EAP-MSCHAPV2) with machine authentication, you need the Microsoft 802.1X supplicant.

All necessary infrastructure devices (such as access points, servers, gateways, user databases, etc.) properly configured for any authentication type you plan to enable on the client.

The following information from your system administrator:

The logical name for your workstation (also referred to as client name).

The protocols necessary to bind to the client adapter, such as TCP/IP.

The case-sensitive service set identifier (SSID) for your RF network.

If your network setup does not include a DHCP server, you need the IP address, subnet mask, and default gateway address of your computer.

The wired equivalent privacy (WEP) keys of the access points with which your client adapter will communicate, if your wireless network uses static WEP for security

The username and password for your network account

Protected access credentials (PAC) file if your wireless network uses EAP-FAST authentication with manual PAC provisioning

If you want to use the Network Managed Test feature in the Diagnostics tab of the ADU, you need to run software release 4.2 on the Wireless LAN Controller.

If you want the client adapter to use Management Frame Protection (MFP), you need to run software release 4.1.181 or later on the Wireless LAN Controller.

Important Notes

Transmit Power of Transmitted Packets Not Intended Power

After a change in channel, the transmit power of transmitted packets might be lower or higher than the intended transmit power.

PMKID Caching Not Working with CB21AG

With a 4400 controller, a wireless LAN is configured with WPA2 and with 802.1X selected as the key management method. A client sends a PMKID in the association request, but the PMKID does not match the controller PMKID cache.

Conflict between Cisco Security Agent 5.0 and the Install Wizard for the CB21AG or PI21AG

If you have Cisco Security Agent (CSA) 5.0 installed on your computer and you attempt to run Install Wizard 4.0 (setup.exe) for the Cisco Aironet CB21AG or PI21AG wireless client, you might encounter one of two conditions that prevents the completion of software installation:

If you click No, you are instructing the CSA to disallow devcon.exe of the client installation software from executing its tasks. The installation then appears to stall. The installation does not complete, and the computer must be rebooted. To avoid this behavior, disable the CSA before installing the wireless client software.

If you click Yes, you are instructing the CSA to allow devcon.exe of the client installation software to execute its tasks. However, the CSA might block cmd.exe from executing. The installation then appears to stall, and the computer must be rebooted.

When you run setup.exe, the CSA opens the following dialog box (see Figure 1).

Figure 1 Cisco Security Agent Dialog Box

Mismatch between HP DC5 100 PCI Bus Controller and PCI Key Cache Register on PI21AG Chip

A mismatch exists between the HP DC5100 PCI bus controller and the PCI key cache register on the chip of the PI21AG. The key cache uses a 48-bit register in which the PI21AG sends out two write cycles on the PCI bus consecutively (DWORD and WORD). The controller on the device cannot handle two consecutive write cycles on the bus, which causes a fatal error on the PCI bus.

You should slow down the write operations to the key cache by performing a register read cycle before and after a register write cycle. To slow down the write operations, install registry key singleWriteKC=1. The path of the singleWriteKC=1 registry key is the following:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002bE10318}

You should not see any system performance degradation because the key cache is only changed every few minutes. An additional read cycle before the second write cycle only lasts a few micro seconds in the PCI space.

Installing the CB21AG Intermediate Driver Manually

In some instances, the installation of the CB21AG software might not work as expected because the intermediate driver might not have installed correctly. In this situation, the installer might not detect this condition, and the rest of the software will not function correctly.

The CB21AG intermediate driver must be installed manually. To install the intermediate driver manually, follow these steps:


Step 1 Insert the client adapter.

Step 2 Click Network Connections in the Start > Settings menu in Windows XP, or right-click My Network Places in Windows 2000. Find the CB21AG instance.

Step 3 Right-click the Cisco CB21AG instance, and left click Properties.

Step 4 Choose the Install option and then add a new service.

Step 5 Click Have disk. Go to the \windows\system32 directory and choose wsimd.inf.

Step 6 Select Wireless Intermediate Driver and click OK. The wireless IMD is bound to the adapter.

Step 7 Reboot system.


Incompatibility between PACs Created by ACS 3.x.xx and ACS Version 4.0.xx

PACs that are created by ACS 3.x.xx are not compatible with ACS 4.0.xx. Client stations must import new PACs. If you select auto-provisioning, new PACs are automatically generated and used. However, if you select manual provisioning, you must manually export new PACs to the client stations.

If a user wants to authenticate to ACS 4.0.xx and 3.x.xx at different times, both PACs must remain on the client station. The ADU is capable of automatically selecting the appropriate PAC.

However, if you experience authentication failures after upgrading the software, delete all the PACs provisioned from the 3.x.xx server.

Conflict with Third-Party Supplicants

When using CB21AG and PI21AG release 4.0, you might encounter a conflict with third-party supplicants (such as the Juniper Odyssey) that causes the Cisco client adapter to lose connection. If you encounter such a conflict, disable third-party supplicants.

Customized Installation Images (Notice to IT Professionals)


Caution Use caution when bundling the client adapter software into a customized installation image. If the registry settings are modified, the software may not install and uninstall properly.

Client Adapter Software Compatibility


Caution Cisco Aironet CB21AG and PI21AG client adapter software is incompatible with other Cisco Aironet client adapter software. The Aironet Desktop Utility (ADU) must be used with CB21AG and PI21AG cards, and the Aironet Client Utility (ACU) must be used with all other Cisco Aironet client adapters.

Installing the Novell Client

If you are going to use the Novell Client, be sure to install it on your computer prior to installing the client adapter software.

Enabling CCKM Fast Secure Roaming

If you want to enable CCKM on the client adapter, you must choose the WPA/WPA2/CCKM security option, regardless of whether you want the adapter to use WPA or WPA2. The configuration of the access point to which your client adapter associates determines whether CCKM is used with 802.1x, WPA, or WPA2.

Access Point Setting for LEAP or EAP-FAST Authentication

Access points must be set for both Network-EAP and open authentication in order to associate to CB21AG and PI21AG client adapters running LEAP with WPA/WPA2/CCKM or EAP-FAST.

EAP-FAST Fails When Access Point Configured as Local RADIUS Server

The client adapter fails to authenticate using EAP-FAST when the access point is running Cisco IOS Release 12.3(2)JA2 and is configured as a local RADIUS server. The following message appears: "Unable to EAP-FAST authenticate the wireless user in the specified amount of time. Network infrastructure might be down."

GINA Error on Bootup

If your computer ever experiences a GINA error on bootup, boot to the safe mode command prompt. Then copy the msgina.dll file in the WinNT\System32 directory (Windows 2000) or Windows\System32 directory (Windows XP) to a file named cscogina.dll. The copy command enables you to copy a source file (msgina.dll) to a destination file (cscogina.dll) within the same directory.

Reboot Required When Uninstalling ACU and ADU


Caution When you uninstall ACU and ADU, be sure to reboot your computer when prompted. Otherwise, the system may be unable to boot, displaying the message "The Logon User Interface DLL cswGina.dll failed to load. Contact your system administrator to replace the DLL or restore the original DLL."

Uninstalling Software Components

All profiles and stored PAC files are deleted if you use the Uninstall the previous installation option on the Previous Installation Detected Install Wizard window to uninstall the client adapter software. Cisco recommends that you use the Profile Manager's export feature to save your profiles before uninstalling the software.

Profiles for PC-Cardbus Cards

The profiles for PC-Cardbus cards are tied to the slot in which the card is inserted. Therefore, you must always insert your PC-Cardbus card into the same slot, create profiles for both slots, or export the profiles for one slot and import them for the other slot.

Auto Profile Selection Enables Scan of Wireless Modes in Auto-Selected Profiles

When you enable auto profile selection, the client adapter ignores the selected profile's wireless mode setting and scans the wireless modes specified by all the profiles in the auto profile selection list for an available network. With this method, the client does not need to disassociate or to change the current profile while looking for networks in other profiles.

ASTU Exit Option

The Exit option on the Aironet System Tray Utility (ASTU) pop-up menu closes both ASTU and ADU.

Windows Wireless Network Connection Icon Shows Unavailable Connection (Windows XP Only)

If your computer is running Windows XP and you configured your client adapter using ADU, the Windows Wireless Network Connection icon in the Windows system tray may be marked with a red X and show an unavailable connection even though a wireless connection exists. This condition is caused by a conflict between ADU and Windows XP wireless network settings. Simply ignore the Windows icon and use the ASTU icon to verify the status of your client adapter's wireless connection.

Supporting Documentation

The Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide (OL-4211-06) pertains specifically to CB21AG and PI21AG client adapters. If you are using a Cisco Aironet 340, 350, or CB20A client adapter, refer to the installation and configuration guide for that client adapter and your computer's operating system.

New and Changed Information

Management Frame Protection

CB21AG and PI21AG release 4.0 supports Management Frame Protection (MFP) when available and enabled on the wireless infrastructure. The CB21AG and PI21AG have MFP automatically enabled.

Installing or Upgrading Client Adapter Software

This section describes how to initially install or upgrade to CB21AG and PI21AG Install Wizard 4.0 on a computer running Windows 2000 or XP. If the client adapter software is not installed on your computer, follow the instructions in the "Installing or Upgrading Client Adapter Software" section below. If you are upgrading your client adapter software to release 4.0, follow the instructions in the "Upgrading the Client Adapter Software" section.

Installing the Client Adapter Software

This section describes how to install Cisco Aironet CB21AG or PI21AG client adapter driver and utilities from a single executable file named WinClient-802.11a-b-g-Ins-Wizard-vx.exe, where x represents the release number. Follow these steps to install these client adapter software components on a computer running Windows 2000 or XP.


Caution Cisco Aironet CB21AG and PI21AG client adapter software is incompatible with other Cisco Aironet client adapter software. The Aironet Desktop Utility (ADU) must be used with CB21AG and PI21AG cards, and the Aironet Client Utility (ACU) must be used with all other Cisco Aironet client adapters.


Caution Do not eject your client adapter at any time during the installation process, including during the reboot.


Note This procedure is meant to be used the first time the Cisco Aironet CB21AG or PI21AG client adapter software is installed on your computer. If this software is already installed on your computer, follow the instructions in the "Routine Procedures" chapter of the Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide to upgrade the client adapter software.



Note Only one CB21AG or PI21AG client adapter can be installed and used at a time. The software does not support the use of multiple CB21AG or PI21AG cards.



Step 1 Ensure that the client adapter is inserted into your computer.

Step 2 Ensure that you have a Cisco Connection Online (CCO) username and password.

Step 3 If you do not have a CCO username and password, go to Cisco's main page (http://www.cisco.com) and click Register (top). Then, follow the instructions to create a CCO username and password.

Step 4 Browse to the following location:

http://www.cisco.com/public/sw-center/

Step 5 Click Wireless Software.

Step 6 Click Wireless LAN Access.

Step 7 Click Cisco Wireless LAN Client Adapters.

Step 8 Click Cisco Aironet Wireless LAN Client Adapters.

Step 9 Perform one of the following steps:

If you are using a PC-Cardbus card, click Cisco Aironet 802.11a/b/g CardBus Wireless LAN Client Adapter (CB21AG).

If you are using a PCI card, click Cisco Aironet 802.11a/b/g PCI Wireless LAN Client Adapter (PI21AG).

Step 10 When prompted, enter your CCO username and password, and click OK.

Step 11 Click Aironet Client Installation Wizard (Firmware, Driver, Utility).

Step 12 Click Windows 2000 or Windows XP.

Step 13 Click the link with the latest release number.

Step 14 Click the Install Wizard file (WinClient-802.11a-b-g-Ins-Wizard-vxx.exe, where xx is the version number).

Step 15 If prompted, enter your CCO username and password, and click OK.

Step 16 Complete the encryption authorization form, read and accept the terms and conditions of the Software License Agreement, select the file again to download it, and save the file on your computer's Desktop.

Step 17 Use Windows Explorer to find the installer.

Step 18 Double-click the installer. The "Starting InstallShield Wizard" message appears followed by the Preparing Setup window (see Figure 2) and the Cisco Aironet Installation Program window (see Figure 3).

Figure 2 Preparing Setup Window

Figure 3 Cisco Aironet Installation Program Window

Step 19 Click Next. The Setup Type window appears (see Figure 4).

Figure 4 Setup Type Window

Step 20 Choose one of the following options and click Next:


Note To ensure compatibility among software components, Cisco recommends that you install the client utilities and driver.


Install Client Utilities and Driver—Installs the client adapter driver and client utilities.

Install Driver Only—Installs only the client adapter driver. If you choose this option, click Next and go to Step 32.

Make Driver Installation Diskette(s)—Enables you to create driver installation diskettes that can be used to install drivers using the Windows Device Manager.


Note If you choose one of the first two options and a client adapter is not inserted into your computer, the following message appears: "The device may not be present or could have been ejected/unplugged from the system. Insert or reinsert it now." Insert the client adapter and click OK. If you proceed without the client adapter inserted, the installation continues, but the driver installation is incomplete. You must manually install the driver later using the Update Device Driver Wizard. See Chapter 9 of the Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide for instructions.


Step 21 When the Install Cisco Aironet Site Survey Utility window appears (see Figure 5), check the Install Cisco Aironet Site Survey Utility check box if you want to install a utility that helps you determine the best placement of infrastructure devices within your wireless network. Click Next.

Figure 5 Install Cisco Aironet Site Survey Utility Window


Note See Appendix F of the Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide for instructions on using the utility.


Step 22 If a message appears indicating that you are required to restart your computer at the end of the installation process, click Yes.


Note If you click No, you are asked to confirm your decision. If you proceed, the installation process terminates.


The Choose Destination Location window appears (see Figure 6).

Figure 6 Choose Destination Location Window

Step 23 Perform one of the following:

If you chose the first option in Step 20, click Next to install the client utility files in the C:\Program Files\Cisco Aironet directory.


Note If you want to install the client utilities in a different directory, click Browse, choose a different directory, click OK, and click Next.


If you chose the Make Driver Installation Diskette(s) option in Step 20, insert a disk into your computer and click Next to copy the driver to the diskette. Go to Step 32.


Note If you want to copy the driver to a different drive or directory, click Browse, choose a new location, click OK, and click Next.


Step 24 The Select Program Folder window appears (see Figure 7).

Figure 7 Select Program Folder Window

Step 25 Click Next to add program icons to the Cisco Aironet program folder.


Note If you want to specify a different program folder, choose a folder from the Existing Folders list or type a new folder name in the Program Folder field and click Next.


Step 26 If your computer is running Windows 2000, go to Step 32. If your computer is running Windows XP, the window titled IMPORTANT: Please Read! appears (see Figure 8).

Figure 8 IMPORTANT: Please Read! Window

Step 27 Read the information displayed and click Next. The Choose Configuration Tool window appears (see Figure 9).

Figure 9 Choose Configuration Tool Window

Step 28 Choose one of the following options:

Cisco Aironet Desktop Utility (ADU)—Enables you to configure your client adapter using ADU.

Third-Party Tool—Enables you to configure your client adapter using a third-party tool such as the Microsoft Wireless Configuration Manager in Windows XP.

Table 1 compares Windows XP and ADU client adapter features.

Table 1 Comparison of Windows XP and ADU Client Adapter Features 

Feature
Windows XP
ADU

Configuration parameters

Limited

Extensive

Capabilities

Create profiles

Yes

Yes

Enable/disable radio

No

Yes

Security

Static WEP

Yes

Yes

LEAP or EAP-FAST authentication with dynamic WEP

No

Yes

EAP-TLS or PEAP authentication

Yes

Yes

Status and statistics

Status window

Limited

Extensive

Statistics window (transmit & receive)

No

Yes


Note If you choose Cisco Aironet Desktop Utility (ADU) above, the Microsoft Wireless Configuration Manager is disabled. If you ever manually enable it, you are prompted to disable it whenever ADU is activated.


Step 29 Click Next.

Step 30 If you chose Cisco Aironet Desktop Utility (ADU) in Step 28, go to Step 32. If you chose Third-Party Tool, the Enable Tray Icon window appears (see Figure 10).

Figure 10 Enable Tray Icon Window

Step 31 Check the Enable Cisco Aironet System Tray Utility (ASTU) check box if you want to be able to use ASTU even though you have chosen to configure your client adapter through a third-party tool instead of ADU. Click Next.

Step 32 When prompted to insert your client adapter, click OK. The Setup Status window appears (see Figure 11).

Figure 11 Setup Status Window

The installation process begins, and you are notified as each software component is installed.

Step 33 When a message appears indicating that your computer needs to be rebooted, click OK and allow your computer to restart.

Step 34 If the Windows Found New Hardware Wizard appears after your computer reboots, click Next, allow the wizard to install the software for the client adapter, and click Finish.

Step 35 If your network setup does not include a DHCP server and you plan to use TCP/IP, follow these steps for your operating system.

Windows 2000

a. Double-click My Computer, Control Panel, and Network and Dial-up Connections.

b. Right-click Local Area Connection x (where x represents the number of the connection).

c. Click Properties.

d. In the Components Checked Are Used by This Connection field, click Internet Protocol (TCP/IP) and Properties.

e. Choose Use the following IP address and enter the IP address, subnet mask, and default gateway address of your computer (which can be obtained from your system administrator).

f. Click OK to close each open window.

Windows XP

a. Double-click My Computer, Control Panel, and Network Connections.

b. Right-click Wireless Network Connection x (where x represents the number of the connection).

c. Click Properties.

d. In the This Connection Uses the Following Items field, click Internet Protocol (TCP/IP) and Properties.

e. Choose Use the following IP address and enter the IP address, subnet mask, and default gateway address of your computer (which can be obtained from your system administrator).

f. Click OK to close each open window.

Step 36 If you are prompted to restart your computer, click Yes.

Step 37 Now that your client adapter is properly installed, it is ready to be configured.

If you are planning to configure your client adapter through ADU, go to Chapter 4 of the Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide for more information.

If you are planning to configure your client adapter through the Windows XP Wireless Configuration Manager, go to Appendix E of the Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide for more information.

If you are planning to configure your client adapter through another third-party tool, refer to the documentation for that application.


Note If you want to be able to use ADU's Group Policy Delay parameter, follow the instructions in the next section to download and install a necessary hot fix before configuring your client adapter.



Note If you experienced problems during or after installation, refer to Chapter 10 of the Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide for more information for troubleshooting information.



Upgrading the Client Adapter Software

Follow these steps to upgrade your CB21AG or PI21AG client adapter software to release 4.0 using the settings that were selected during the last installation.


Note If you want to upgrade your client adapter software using new installation settings, you must uninstall the previous installation [see the instructions in Chapter 9 of the Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide] and then follow the instructions in the "Installing the Client Adapter Software" section to install the new software.



Step 1 Ensure that the client adapter is inserted into your computer.

Step 2 Ensure that you have a Cisco Connection Online (CCO) username and password.

Step 3 If you do not have a CCO username and password, go to Cisco's main page (http://www.cisco.com) and click Register (top). Then, follow the instructions to create a CCO username and password.

Step 4 Browse to the following location:

http://www.cisco.com/public/sw-center/

Step 5 Click Wireless Software.

Step 6 Click Wireless LAN Access.

Step 7 Click Cisco Wireless LAN Client Adapters.

Step 8 Click Cisco Aironet Wireless LAN Client Adapters.

Step 9 Perform one of the following steps:

If you are using a PC-Cardbus card, click Cisco Aironet 802.11a/b/g CardBus Wireless LAN Client Adapter (CB21AG).

If you are using a PCI card, click Cisco Aironet 802.11a/b/g PCI Wireless LAN Client Adapter (PI21AG).

Step 10 When prompted, enter your CCO username and password, and click OK.

Step 11 Click Aironet Client Installation Wizard (Firmware, Driver, Utility).

Step 12 Click Windows 2000 or Windows XP.

Step 13 Click the link with the greatest release number.

Step 14 Click the Install Wizard file (WinClient-802.11a-b-g-Ins-Wizard-vxx.exe, where xx is the version number).

Step 15 If prompted, enter your CCO username and password, and click OK.

Step 16 Complete the encryption authorization form, read and accept the terms and conditions of the Software License Agreement, select the file again to download it, and save the file on your computer's Desktop.

Step 17 Use Windows Explorer to find the installer.

Step 18 Double-click the installer. The "Starting InstallShield Wizard" message appears followed by the Preparing Setup window (see Figure 12) and the Cisco Aironet Installation Program window (see Figure 13).

Figure 12 Preparing Setup Window

Figure 13 Previous Installation Detected Window

Step 19 Choose Update the previous installation and click Next.

Step 20 When a message appears indicating that you are required to restart your computer at the end of the installation process, click Yes.


Note If you click No, you are asked to confirm your decision. If you proceed, the installation process terminates.


The Setup Status window appears (see Figure 14).

Figure 14 Setup Status Window

The upgrade process begins, and you are notified as each software component is installed.

Step 21 When a message appears indicating that your computer needs to be rebooted, click OK and allow your computer to restart. The client adapter's software has been upgraded.


Installing a Microsoft Hot Fix for Group Policy Delay

If you want to use the Group Policy Delay parameter on the Profile Management (Security) window in ADU, you must install a Microsoft hot fix on computers running Windows 2000. The hot fix is incorporated into Windows XP Service Pack 2 and later.

The Group Policy Delay parameter enables you to specify how much time elapses before the Windows logon process starts Group Policy, a Windows feature used by administrators to specify configuration options for groups of users. The objective is to delay the start of Group Policy until wireless network authentication occurs. Follow the steps below to obtain and install the hot fix.


Note You must be a registered Cisco customer and log into Cisco.com in order to download the hot fix. If you are unable to access the hot fix from Cisco.com, contact Microsoft Support to obtain it. The Windows 2000 support page provides the contact information:
http://support.microsoft.com/default.aspx?scid=fh;EN-US;win2000



Step 1 Use your computer's web browser to access the following URL:

http://www.cisco.com/cgi-bin/tablebuild.pl/aironet_hotfix

Step 2 If prompted, enter your Cisco Connection Online (CCO) username and password, and click OK.


Note To create a CCO username and password, visit http://www.cisco.com.


Step 3 Click the hot fix file (userenv.zip).

Step 4 Complete the encryption authorization form and click Submit.

Step 5 Click the file again to download it.

Step 6 Save the file to your computer's hard drive.

Step 7 Find the file using Windows Explorer, double-click it, and extract its files to a folder.

Step 8 Reboot your computer and press F8 while your computer is booting.

Step 9 When the boot menu appears, select Safe Mode with Command Prompt.


Note You must complete this procedure in safe mode; otherwise, system file protection (SFP) silently restores the original version of the file you are replacing.


Step 10 Copy the hot fix file (userenv.dll) to %systemroot%\System32 and overwrite the existing version of this file.

Step 11 Delete the copy of userenv.dll in %systemroot%\System32\DllCache.

Step 12 Restart your computer.


Finding Version Numbers

Follow the instructions in this section to find the version numbers of your client adapter's software components.

Finding the Driver Version

To find the driver version that is currently installed for your client adapter, open ADU, click the Diagnostics tab, and click Adapter Information. The Driver Version field on the Adapter Information window shows the current driver version.

Finding the ADU Version and Other Software Components

To find the version of ADU and other software components installed for your client adapter, open ADU and choose the About Aironet Desktop Utility option from the Help drop-down menu. The About window shows the current version of the following software components: ADU, ACAU, the authentication supplicant, the protocol driver, and the Windows NDIS miniport driver.

Caveats

This section describes the open and resolved caveats for the software components in this release.

Open Caveats

CSCsi11431—Auto-selected profiles convert correctly but do not function

Profiles are created for the PCM350 client adapter. These profiles are added to the list of auto-selected profiles. The PCM350 is then unplugged. The CB21AG client adapter is inserted, and the ADU is installed. After rebooting the system, the Profile Migration Tool (PMT) is executed. All profiles are converted successfully, but the auto-selected profiles do not function correctly. The active profile in the ADU is still the default profile.

Workaround: None.

CSCsi48025—ADU dims when disabling QoS in interface

An ADU associated to an access point is configured with open WEP 128-bit encryption. The CB21AG is selected as the local area connection. In the local area connection Properties window, QoS Packet Scheduler is disabled. In the Windows Task Manager, the ADU is dimmed.

Workaround: None.

CSCsi14938—PEAP (EAP-GTC, EAP MSCHAPv2) Single Sign-On fails

PEAP machine authentication is enabled on the ACS server, and the client gets a machine certificate via a Group Policy Object. The client uses a profile that is configured to use PEAP (EAP-GTC) or PEAP (MSCHAPv2) with Single Sign-On. The Use Machine Information for Domain Logon option is checked, and Use Windows User name and Password is checked for the profile. The Cached Logons value is set from 10 to 0 in the client registry editor.

After the system is rebooted, the ADU cannot log onto the Windows domain. The failed machine information logon record cannot be found in the ACS server log.

Workaround: None.

CSCsi63193—Installation of ADU with PI21AG stalls on Acer desktop

The installation of the ADU with PI21AG stalls on the Acer 6900 Veriton desktop with Windows XP SP2.

Workaround:

a. Ensure that the AIR-PI21AG-J-K9 device in the Device Manager has a red check next to it.

b. Execute the ADU installer exe file.

c. Reboot the desktop when prompted to do so.

d. After the reboot, the device is disabled in the Device Manager. Right click and enable the device in Device Manager.

CSCsj10654—Client MFP failed with 802.11h frame spoofing

After the controller is configured to use a RADAR-detecting channel, a client is associated with WPA version 2 AES-CCMP with 802.1X. On an 802.11h access point, a RADAR-detection event is triggered. A valid 802.11h channel change frame is captured with a sniffer. The access point has client MFP enabled from the controller.

When the channel change frame is replayed to the client, the ADU disconnects the client adapter. The client adapter then reassociates with the controller access point.

Workaround: None.

CSCsj23076—Signal quality in CASSU is not consistent with current signal quality in the ADU

The signal strength quality percentage in the CASSU interface is not the same in the ADU interface. When the device is taken out of access point range, the current signal quality is still 100% in the ADU, but signal quality is 0% in the CASSU.

Workaround: None.

CSCsj64455—Supported Features Advertisement information element bit 0 is 0 not 1 on the client

When client MFP is disabled on the controller for a particular WLAN, beacons and probe responses that originate from APs in this WLAN have the SFA IE bit 0 set to 0. When a client associates with WPA version 2(MFP) EAP, the SFA IE bit 0 is 0, not 1. When a client associates with WPA version 2 (MFP) EAP with CCKM, the SFA IE bit 0 is 0, not 1.

Workaround: None.

CSCsj84780—ADU dimmed after installation

The ADU interface is dimmed even though the CB21AG client adapter is not configured to use Windows Zero Configuration (WZC).

Workaround: Uninstall and reinstall the ADU software.

CSCsj85294—Clients with CB21AG at 100% CPU because of DPC and ISR

Wireless clients with CB21AG adapters sometimes run at 100% CPU for extended periods of time, which causes slow wireless connections and disconnections. The process monitor spikes to 100% CPU utilization because CPU is consumed by Deferred Procedure Calls (DPCs) and ISRs.

Workaround: None.

CSCsk01565—After LEAP domain logon, ADU usually asks for the authentication again

The client uses LEAP security with the automatic prompt option and WPA data encryption. When the device is booted up, the user logs onto the domain. LEAP shows the progress of the authentication and gets an IP address to log in. After login, LEAP asks for authentication data again.

Workaround: None.

CSCsk04387—PAC expires itself with local RADIUS server even if no expiration date is set

A network has two access points with local RADIUS servers for EAP-FAST authentication. Even if the PAC has no expiration date, the PAC expires a few days after the initial authentication.

Workaround: None.

CSCsk07088—WLC shows parsing error when client performs send message test in DC mode

After the client is configured with at least one valid WLAN profile, the client is associated to the diagnostic channel. When the client initiates the send message portion of diagnostic channel mode testing, the WLC shows a parsing error.

Workaround: None.

CSCsk08004—PC-MY18A computer (NEC MateNX) freezes when the ADU is installed

PC-MY18A computer (NEC MateNX) with PI21AG stalls with ADU installation and must be rebooted.

Workaround: None.

CSCsk08053—Destination MAC address invalid with DNS ping test

After you connect CCXv5 client to the infrastructure device, start the DNS ping test from the Diagnostics tab and wait for the test results. The MAC address is invalid.

Workaround: None.

CSCsk16432—WLC shows invalid test status in DC mode when DHCP server is disabled

The client is configured with at least one valid WLAN profile, and diagnostic channel mode testing is initiated from the client. The client is associated to the diagnostic channel on the controller. If the you disable the internal DHCP server on the controller and enter the command show client ccx last-test-status on the WLC console, the WLC shows an invalid test status.

Workaround: None.

CSCsk35043—Changing security settings on controller requires disabling CB21AG

Security settings are changed on the controller. When the security settings are also changed on the client adapter, the adapter does not reassociate to the controller unless the adapter is disabled and then re-enabled.

Workaround: None.

CSCsk39611—Client does not roam to new access point with a power level that is greater than minimum received signal power (MRSP)

A client adapter is associated to an access point that is set to -65 dBm. A neighboring access point is enabled and set to -87 dBm. The first access point is disabled, and the client adapter roams to the second access point. After 15 seconds, the first access point is re-enabled, but the client does not roam to it, even though it has a stronger signal. When the power level of the second access point is lowered to -95 dBm, the client adapter remains associated with it. When the power level for the second access point is reduced further so that there is no signal strength, the client adapter roams to the first access point.

The client adapter can also be made to roam by disabling and re-enabling its radio.

Workaround: None.

CSCsk39638—Client roams to access point even though access point RSSI is lower than minimum received signal power (MRSP)

The power level of an access point is set to -65dBm, which is above the configured MRSP and the adaptive scan threshold (AST). The client associates to the access point. A neighboring access point is set to -85 dBm, which is below the configured MRSP and AST. The attenuation of the first access point is increased to -88 dBm. The client roams to the second access point even though the RSSI of this access point is below the MRSP.

Workaround: None.

CSCsk52544—After Windows in hibernate mode, ADU switches to WZC

The ADU is opened, and the CB21AG is associated to an access point. The device is then set to hibernate mode. When the device comes out of hibernate mode, the ADU switches to WZC approximately 10 percent of the time. This behavior is most often seen when the hibernate period is long (overnight).

Workaround: None.

CSCsk60117—Clients experiencing disconnects when roaming

Clients experience roaming delays of between 1 and 7 seconds with various configurations.

Workaround: None.

CSCsk71038—WLC shows incorrect Power Save Mode in client reporting

An access point sends an operating parameters request frame to a client. A wireless sniffer verifies that the access point sends the packet and that the client sends a response frame. The WLC Power Save Mode is in Normal Power Save Mode even if the wireless adapter Power Save Mode is set to Maximum Power Save Mode or Constantly Awake Mode.

Workaround: None.

Resolved Caveats

The following caveats are resolved in release 4.0:

CSCsf96751—CB21AG client does not function properly with PC network bridge feature

Network bridging on a PC with the CB21AG client and a wired NIC initially allows traffic to pass from end to end. However, if the PC is rebooted, the network bridge does not start because the CB21AG does not associate to the access point.

CSCsg65164—Authentication timeout for EAP-FAST occurs after 60 seconds

The ADU sends an EAPOL-start message after 30 seconds. However, the login window does not appear. The ADU sends a second EAPOL-start message after 30 seconds. After this second message, the login window appears. It takes 60 seconds for the login window to appear, even when the Authentication Timeout Value is set to 30 seconds.

CSCsg99350—CB21AG client does not follow data-rate setting on WLC

The CB21AG client does not follow the data-rate setting on the WLC. The client uses the 1-Mbps and 2-Mbps data rate for 802.11 data packets even though these rates were disabled on the WLC. This caveat was changed to an enhancement request.

CSCsh49433—CB21AG fails to associate at extended channel set for (-KE) domain

CB21AG and PI21AG fail to associate at extended channels for 802.11A other than channels 149, 153, 157, and 161 in (-KE) country code setting for 4404 controller.

CSCsi11587—CCKM caching and roaming are not working with WLC

When the client first authenticates to AP1 and then to AP2 in roaming, there is packet loss when pinging. User credentials are not cached.

CSCsi49993—AP scan log timer at 0 seconds freezes CASSU and CPU usage reaches 100 percent

When the access point scan list logging timer is set to 0 seconds in the CASSU AP Scan List Logging Configuration window, the CASSU stops responding and CPU usage reaches 100 percent.

CSCsj27353—CB21AG does not work with 802.11a channel 52, 56, 60, and 64 on WLC AU

Wireless clients in Australia cannot associate with 802.11a access points. The 802.11a mid-band (5.4-5.725) is not working. The other two bands are working with the CB21AG and other vendors. Wireless clients can connect on channels 36, 40, 44, 48, 149, 153, 157, 161, and 165 but cannot connect on channels 52, 56, 60, and 64.

CSCsk29290—MAC address returned during manufacturer information test in S65 is incorrect.

Getting Bug Information on Cisco.com

If you are a Cisco registered user, you can use the Cisco TAC Software Bug Toolkit, which consists of three tools (Bug Navigator, Bug Watcher, and Search by Bug ID Number) that help you to identify existing bugs (or caveats) in Cisco software products.

Access the TAC Software Bug Toolkit at the following URL:

http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl

Troubleshooting

For the most up-to-date, detailed troubleshooting information, refer to the Cisco TAC website at

http://www.cisco.com/en/US/support/index.html

Click Product Support > Wireless. Then choose your product and Troubleshooting to find information on the problem you are experiencing.

Related Documentation

For more information about ACAU and the Cisco Aironet CB21AG and PI21AG client adapters, refer to the following documents:

Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Administration Utility Administrator Guide (OL-7086-04)—Provides instructions for installing the ACAU and using it to set software installation options and create configuration profiles for CB21AG and PI21AG client adapters.

http://www.cisco.com/en/US/products/hw/wireless/ps4555/prod_maintenance_guides_list.html

Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide (OL-4211-06)Provides instructions for installing, configuring, and troubleshooting CB21AG and PI21AG client adapters on computers running the Microsoft Windows 2000 or XP operating system.

http://www.cisco.com/en/US/products/hw/wireless/ps4555/products_installation_and_configuration_guides_list.html

Release Notes for Cisco Aironet 802.11a/b/g (CB21AG and PI21AG) Client Administration Utility (ACAU) 4.0 (OL-13102-01)—Describes new features and open and resolved caveats in ACAU 4.0.

http://www.cisco.com/en/US/products/hw/wireless/ps4555/prod_release_notes_list.html

Obtaining Documentation, Obtaining Support, and Security Guidelines

For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html