Table Of Contents
Release Notes for
Cisco Aironet Client Adapter Firmware
This document contains the following sections:
This document describes system requirements, upgrade procedures, and caveats for Cisco Aironet client adapter firmware release 4.16.
Client adapter firmware release 4.16 and Access Point firmware release 11.03 solve the sporadic lockup of 350 series wireless LAN adapters (also referred to as client adapters) and 350 series Access Points that occurs when the Access Point is set to use long radio headers and antenna diversity and the associated client adapter is set to use long radio headers. The 340 series client adapters and 340 series Access Points do not experience this sporadic lockup problem, so an upgrade to 4.16 or 11.03 does not provide any features or benefits for the 340 series client adapters or 340 series Access Points.
You must have a Cisco Aironet 340 or 350 series client adapter (PC card, LM card, or PCI client adapter) to install firmware version 4.16.
Upgrading to a New Firmware Release
This section describes how to upgrade to firmware release 4.16.
Determining the Firmware Version
To determine the firmware version that your client adapter is currently using, follow the instructions below for your operating system.
In Windows 95, 98, NT, 2000, or Me
Select Status from the Commands pull-down menu in ACU. The firmware version is displayed in the Status screen.
In Windows CE
Select Start > Programs > Cisco > Load New Firmware. The firmware version is displayed in the Select New Firmware screen.
Select Status from the Commands pull-down menu in ACU. The firmware version is displayed in the Status screen.
Select Status from the File pull-down menu in the Macintosh client utility and then the Link Status tab. The firmware version is displayed in the Status screen.
For instructions on upgrading your current version of Cisco Aironet client adapter firmware, follow the steps below:
Step 1 Go to www.cisco.com and select Technical Documents > Documentation Home Page > Broadband/Wireless Solutions > Aironet 350 Series Wireless LAN Products > Cisco Aironet 350 Series Wireless LAN Adapters > Cisco Aironet Wireless LAN Adapters Software Configuration Guide.
Step 2 Select one of the following links, depending on your operating system:
•For Windows 95, 98, NT, 2000, Me, or Linux, select Using the Aironet Client Utility.
•For Windows CE, select Using the Client Utilities for Windows CE.
•For Macintosh, select Using the Client Utility for MacOS 9.x.
Step 3 Follow the instructions for loading new firmware.
This section describes known problems for client adapter firmware release 4.16.
Client adapter firmware release 4.16 and Access Point firmware release 11.03 solve the sporadic lockup of 350 series client adapters and 350 series Access Points that occurs when the Access Point is set to use long radio headers and antenna diversity and the associated client adapter is set to use long radio headers. The 340 series client adapters and 340 series Access Points do not experience this sporadic lockup problem, so an upgrade to 4.16 or 11.03 does not provide any features or benefits for the 340 series client adapters or 340 series Access Points.
If a client adapter is associated to an Access Point that is configured for open authentication, LEAP authentication, and full encryption and the client has a WEP key stored in NVRAM, it is possible for the client to communicate with the Access Point using the incorrect WEP key (CSCds79736).
This problem can occur after the following sequence:
1. LEAP authentication is enabled on the client.
2. The client associates to the Access Point and is authenticated with LEAP.
3. LEAP is then disabled on the client, but WEP remains enabled.
4. When the client reassociates with the Access Point, it incorrectly uses the key in working memory (the key used during LEAP authentication) instead of using the key stored in NVRAM.
You must force the client to use the key in NVRAM by either rebooting the client or by ejecting and then reinserting the client adapter.
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 today at http://www.cisco.com/support/bugtools/.
For the most up-to-date, detailed troubleshooting information, refer to the Cisco TAC website at http://www.cisco.com/tac. Select Wireless LAN under Top Issues.
For more information about Cisco Aironet client adapters, refer to the following documents:
•Quick Start Guide: Cisco Aironet Wireless LAN Adapters
•Cisco Aironet Wireless LAN Adapters Hardware Installation Guide
•Cisco Aironet Wireless LAN Adapters Software Configuration Guide
The following sections provide sources for obtaining documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following sites:
Cisco documentation and additional literature are available in a CD-ROM package shipped separately from the Cisco Aironet Series Wireless LAN Adapters CD that shipped with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or as an annual subscription.
Cisco documentation is available in the following ways:
•Registered Cisco Direct Customers can order Cisco Product documentation from the Networking Products MarketPlace:
•Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription Store:
•Nonregistered CCO users can order documentation through a local account representative by calling Cisco corporate headquarters (California, USA) at 408 526-7208 or, in North America, by calling 800 553-NETS(6387).
If you are reading Cisco product documentation on the World Wide Web, you can submit technical comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco.
You can e-mail your comments to firstname.lastname@example.org.
To submit your comments by mail, use the response card behind the front cover of your document, or write to the following address:
Attn Document Resource Connection
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-9883
We appreciate your comments.
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools. For Cisco.com registered users, additional troubleshooting tools are available from the TAC website.
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information and resources at anytime, from anywhere in the world. This highly integrated Internet application is a powerful, easy-to-use tool for doing business with Cisco.
Cisco.com provides a broad range of features and services to help customers and partners streamline business processes and improve productivity. Through Cisco.com, you can find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online technical support, download and test software packages, and order Cisco learning materials and merchandise. Valuable online skill assessment, training, and certification programs are also available.
Customers and partners can self-register on Cisco.com to obtain additional personalized information and services. Registered users can order products, check on the status of an order, access technical support, and view benefits specific to their relationships with Cisco.
To access Cisco.com, go to the following website:
Technical Assistance Center
The Cisco TAC website is available to all customers who need technical assistance with a Cisco product or technology that is under warranty or covered by a maintenance contract.
Contacting TAC by Using the Cisco TAC Website
If you have a priority level 3 (P3) or priority level 4 (P4) problem, contact TAC by going to the TAC website:
P3 and P4 level problems are defined as follows:
•P3—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.
•P4—You need information or assistance on Cisco product capabilities, product installation, or basic product configuration.
In each of the above cases, use the Cisco TAC website to quickly find answers to your questions.
To register for Cisco.com, go to the following website:
If you cannot resolve your technical issue by using the TAC online resources, Cisco.com registered users can open a case online by using the TAC Case Open tool at the following website:
Contacting TAC by Telephone
If you have a priority level 1 (P1) or priority level 2 (P2) problem, contact TAC by telephone and immediately open a case. To obtain a directory of toll-free numbers for your country, go to the following website:
P1 and P2 level problems are defined as follows:
•P1—Your production network is down, causing a critical impact to business operations if service is not restored quickly. No workaround is available.
•P2—Your production network is severely degraded, affecting significant aspects of your business operations. No workaround is available.
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
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