B E TA D R A F T - C I S C O C O N F I D E N T I A L Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows Corporate Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.
B E TA D R A F T - C I S C O C O N F I D E N T I A L THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.
B E TA D R A F T - C I S C O C O N F I D E N T I A L C O N T E N T S Preface xi xii Audience xii Purpose Organization xii Conventions xiii Related Publications xv xv Obtaining Documentation xv World Wide Web xv Ordering Documentation xv Documentation Feedback xvi Documentation CD-ROM xvi Obtaining Technical Assistance xvi Cisco.
Contents B E TA D R A F T - C I S C O C O N F I D E N T I A L CHAPTER 2 2-1 Preparing for Installation Safety information 2-2 FCC Safety Compliance Statement 2-2 Safety Guidelines Warnings 2-3 2-3 Unpacking the Client Adapter 2-3 Package Contents 2-4 System Requirements Site Requirements 2-5 2-5 For Infrastructure Devices CHAPTER 3 2-2 For Client Devices 2-5 Installing the Client Adapter 3-1 Determining the Latest Versions of the Driver and ACU Installing the Driver 3-2 3-3 Instal
Contents B E TA D R A F T - C I S C O C O N F I D E N T I A L 4-6 Importing and Exporting Profiles 4-7 4-7 Importing a Profile Exporting a Profile 4-7 Denying Access to Non-Administrative Users CHAPTER 5 5-1 Configuring the Client Adapter Overview 5-2 Setting System Parameters 5-3 5-6 Setting RF Network Parameters 5-13 Setting Advanced Infrastructure Parameters Setting Advanced Ad Hoc Parameters 5-17 Setting Network Security Parameters 5-20 Setting the Allow Association To Mixed Cells Pa
Contents B E TA D R A F T - C I S C O C O N F I D E N T I A L 6-8 Using LEAP with a Manually Prompted Login 6-8 After Profile Selection After a Reboot/Logoff/Card Insertion After Your LEAP Credentials Expire 6-8 6-10 Using LEAP with a Saved Username and Password After Profile Selection/Card Insertion 6-10 6-11 After a Reboot/Logoff After Your LEAP Credentials Expire Using Host-Based EAP 6-10 6-11 6-11 After Profile Selection/Card Insertion 6-11 6-12 EAP-MD5 6-12 EAP-TLS 6-12 After a Reboo
Contents B E TA D R A F T - C I S C O C O N F I D E N T I A L Driver Procedures 8-7 Determining the Driver Version Upgrading the Driver 8-7 8-8 Upgrading the Driver for Windows 95 and 98 8-8 8-9 Upgrading the Driver for Windows 2000 8-10 Upgrading the Driver for Windows Me 8-11 Upgrading the Driver for Windows XP 8-12 Uninstalling the Driver 8-13 Uninstalling the 6.10 Driver 8-13 Upgrading the Driver for Windows NT Uninstalling a Driver Other Than the 6.
Contents B E TA D R A F T - C I S C O C O N F I D E N T I A L 9-8 Problems Connecting to the Network Losing Association Upon Resuming from Suspend Mode (Windows NT and Mini PCI Card Only) 9-8 Parameters Missing from ACU Properties Screens 9-8 LEAP Login Screen Appears Before Windows Login Screen 9-9 Microsoft Hot Fixes 9-9 Error Messages Getting Help 9-15 APPENDIX A Technical Specifications APPENDIX B Translated Safety Warnings A-1 B-1 Explosive Device Proximity Warning B-2 Dipole Antenn
Contents B E TA D R A F T - C I S C O C O N F I D E N T I A L APPENDIX E Configuring the Client Adapter through Windows XP E-1 Overview E-2 E-2 Overview of Security Features Static WEP Keys E-2 EAP (with Static or Dynamic WEP Keys) E-2 E-4 Configuring the Client Adapter E-7 Enabling EAP-MD5 Authentication E-9 Enabling EAP-TLS Authentication Using Windows XP to Associate to an Access Point Viewing the Current Status of Your Client Adapter APPENDIX F E-10 F-1 Performing a Site Survey Overview
Contents B E TA D R A F T - C I S C O C O N F I D E N T I A L Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows x OL-1394-03
B E TA D R A F T - C I S C O C O N F I D E N T I A L Preface The preface provides an overview of the Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows, references related publications, and explains how to obtain other documentation and technical assistance, if necessary.
Preface Audience B E TA D R A F T - C I S C O C O N F I D E N T I A L Audience This publication is for the person responsible for installing, configuring, and maintaining a Cisco Aironet Wireless LAN Client Adapter on a computer running Windows 95, 98, NT, 2000, Me, or XP. This person should be familiar with computing devices and with network terms and concepts. Purpose This publication describes the Cisco Aironet client adapters and explains how to install, configure, and troubleshoot them.
Preface Conventions B E TA D R A F T - C I S C O C O N F I D E N T I A L • Appendix E, “Configuring the Client Adapter through Windows XP,” explains how to configure and use the client adapter with Windows XP. • Appendix F, “Performing a Site Survey,” shows people who are responsible for conducting a site survey how they can use ACU to determine the best placement for infrastructure devices within a wireless network.
Preface Conventions B E TA D R A F T - C I S C O C O N F I D E N T I A L Attention Ce symbole d’avertissement indique un danger. Vous vous trouvez dans une situation pouvant entraîner des blessures. Avant d’accéder à cet équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les procédures courantes de prévention des accidents.
Preface Related Publications B E TA D R A F T - C I S C O C O N F I D E N T I A L Related Publications For more information about Cisco Aironet Wireless LAN Client Adapters, refer to the following publications: • Release Notes for Cisco Aironet Client Utilities for Windows • Release Notes for Cisco Aironet Client Adapter Drivers for Windows • Release Notes for Cisco Aironet Client Adapter Firmware • Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows CE • C
Preface Obtaining Technical Assistance B E TA D R A F T - C I S C O C O N F I D E N T I A L • Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription Store: http://www.cisco.com/go/subscription • Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco Systems Corporate Headquarters (California, U.S.A.) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).
Preface Obtaining Technical Assistance B E TA D R A F T - C I S C O C O N F I D E N T I A L Technical Assistance Center The Cisco Technical Assistance Center (TAC) is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two levels of support are available: the Cisco TAC Web Site and the Cisco TAC Escalation Center.
Preface Obtaining Technical Assistance B E TA D R A F T - C I S C O C O N F I D E N T I A L Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled: for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). When you call the center, please have available your service agreement number and your product serial number.
C H A P T E R 1 Product Overview This chapter describes the Cisco Aironet Wireless LAN Client Adapters and illustrates their role in a wireless network.
Chapter 1 Product Overview Introduction to the Client Adapters B E TA D R A F T - C I S C O C O N F I D E N T I A L Introduction to the Client Adapters The Cisco Aironet Wireless LAN Client Adapters are radio modules that provide transparent wireless data communications between fixed, portable, or mobile devices and other wireless devices or a wired network infrastructure. The client adapters are fully compatible when used in devices supporting Plug-and-Play (PnP) technology.
Chapter 1 Product Overview Hardware Components B E TA D R A F T - C I S C O C O N F I D E N T I A L Note In the first three product model numbers, the first x represents the client adapter series (340 or 350), and the second x indicates the wired equivalent privacy (WEP) level of the card, where 0 = no WEP capability, 1 = 40-bit WEP, and 2 = 128-bit WEP. If the last two product model numbers contain K9, the card is 128-bit WEP capable.
Chapter 1 Product Overview Hardware Components B E TA D R A F T - C I S C O C O N F I D E N T I A L Radio Antenna The type of antenna used depends on your client adapter: • PC cards have an integrated, permanently attached diversity antenna. The benefit of the diversity antenna system is improved coverage. The system works by allowing the card to switch and sample between its two antenna ports in order to select the optimum port for receiving data packets.
Chapter 1 Product Overview Software Components B E TA D R A F T - C I S C O C O N F I D E N T I A L Software Components The client adapter has three major software components: radio firmware, a driver, and a client utility. Radio Firmware The firmware, which is contained in the client adapter’s Flash memory, controls the adapter’s radio. The client adapter is shipped with the firmware installed; however, a more recent version of the firmware may be available from Cisco.com.
Chapter 1 Product Overview Software Components B E TA D R A F T - C I S C O C O N F I D E N T I A L Overview of ACU The Aironet Client Utility screen (see Figure 1-1) is ACU’s primary screen. Figure 1-1 Aironet Client Utility Screen The status bar at the bottom of the Aironet Client Utility screen reflects the current state of your client adapter. Possible states include Associated, Not Associated, Not Inserted, Being Flashed with New Firmware, and Unable To Read Status from the Card.
Chapter 1 Product Overview Network Configurations Using the Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Buttons on the ACU Screens The buttons on the ACU screens are used to perform specific functions. Table 1-2 describes the most common buttons.
Chapter 1 Product Overview Network Configurations Using the Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Ad Hoc Wireless LAN An ad hoc (or peer-to-peer) wireless LAN (see Figure 1-2) is the simplest wireless LAN configuration. In a wireless LAN using an ad hoc network configuration, all devices equipped with a client adapter can be linked together and communicate directly with each other.
Chapter 1 Product Overview Network Configurations Using the Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Wireless Infrastructure with Workstations Accessing a Wired LAN A microcellular network can be created by placing two or more access points on a LAN. Figure 1-3 shows a microcellular network with workstations accessing a wired LAN through several access points.
Chapter 1 Product Overview Network Configurations Using the Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows 1-10 OL-1394-03
C H A P T E R 2 Preparing for Installation This chapter provides information that you need to know before installing a client adapter.
Chapter 2 Preparing for Installation Safety information B E TA D R A F T - C I S C O C O N F I D E N T I A L Safety information Follow the guidelines in this section to ensure proper operation and safe use of the client adapter. FCC Safety Compliance Statement The FCC, with its action in ET Docket 96-8, has adopted a safety standard for human exposure to RF electromagnetic energy emitted by FCC-certified equipment.
Chapter 2 Preparing for Installation Unpacking the Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Warnings Observe the following warnings when operating the client adapter: Warning Do not operate your wireless network device near unshielded blasting caps or in an explosive environment unless the device has been modified to be especially qualified for such use.
Chapter 2 Preparing for Installation System Requirements B E TA D R A F T - C I S C O C O N F I D E N T I A L System Requirements In addition to the items shipped with the client adapter, you will also need the following in order to install and use the adapter: • One of the following computing devices running Windows 95, 98, NT, 2000, Me, or XP: – Laptop, notebook, or portable or handheld device equipped with a Type II or Type III PC card slot or Cardbus slot – Desktop personal computer equipped with
Chapter 2 Preparing for Installation Site Requirements B E TA D R A F T - C I S C O C O N F I D E N T I A L Site Requirements This section discusses the site requirements for both infrastructure and client devices. For Infrastructure Devices Because of differences in component configuration, placement, and physical environment, every network application is a unique installation.
Chapter 2 Preparing for Installation Site Requirements B E TA D R A F T - C I S C O C O N F I D E N T I A L Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows 2-6 OL-1394-03
C H A P T E R 3 Installing the Client Adapter This chapter provides instructions for installing the client adapter driver and the client utility.
Chapter 3 Installing the Client Adapter Determining the Latest Versions of the Driver and ACU B E TA D R A F T - C I S C O C O N F I D E N T I A L Determining the Latest Versions of the Driver and ACU The driver and the Aironet Client Utility (ACU) are provided on the CD that shipped with the client adapter; however, a more recent version of each may be available from Cisco.com. Cisco recommends installing the most current versions of the driver and ACU.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L Installing the Driver Note This procedure is meant to be used the first time the driver is installed on a computer running Windows 95, 98, NT, 2000, Me, or XP. If a Cisco Aironet client adapter driver is already installed on your computer, follow the instructions in Chapter 8 to upgrade to a new driver. However, if the 6.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L Windows 95 Version A If your computer’s operating system is Windows 95 Version A, follow these steps. Step 1 If you are installing the driver from Cisco.com, follow the steps below. If you are installing the driver from the CD that shipped with your client adapter, go to Step 2. a. Use the computer’s web browser to access the following URL: http://www.cisco.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 13 Select Client Name. Type your computer’s unique client name, which can be obtained from your system administrator, in the Value dialog box. Step 14 Select SSID. Type your RF network’s (case-sensitive) SSID, which can be obtained from your system administrator, in the Value dialog box. Step 15 Click OK. Step 16 If you are prompted to restart your computer, click Yes.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 5 The Update Device Driver Wizard dialog box opens and indicates that Windows will complete the installation of the client adapter. Click Next. Step 6 If the Update Device Driver Wizard indicates that Windows was unable to locate a driver for the client adapter, click Other Locations.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L Installing the Driver for Windows 98 Note Windows 98 limits your computer’s network connections to eight. If you try to install a client adapter when eight network devices (such as a PCMCIA Ethernet card, dial-up adapter, VPN adapter, docking station Ethernet card, etc.) are already connected to your computer, the new adapter cannot establish a network connection.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 9 Enter or browse to the path where the driver is located (CD, floppy disk, or hard drive). If you are installing the driver from the CD and your CD-ROM drive is drive D, the path should be D:\Win98. Step 10 Click OK. Step 11 Make sure the Cisco Systems wireless LAN adapter is selected in the Select Device screen and click OK.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L Installing the Driver for Windows NT Note This procedure requires that your computer has Windows NT Service Pack 3 or greater. If your computer’s operating system is Windows NT, follow these steps. Step 1 If you are installing the driver from Cisco.com, follow the steps below. If you are installing the driver from the CD that shipped with your client adapter, go to Step 2. a.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 9 In the Select Network Adapter window, click Have Disk. Step 10 In the Insert Disk window, enter the path to where the driver is located (CD, floppy disk, or hard drive). If you are installing the driver from the CD and your CD-ROM drive is drive D, the path should be D:\WinNT4. Step 11 Click OK.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L h. Locate the file using Windows Explorer, double-click it, and extract its files to a folder. i. Go to Step 2. Step 2 Follow the instructions in Chapter 8 to insert the client adapter into your computer. The instructions vary by operating system and are different for PC cards, PC-Cardbus cards, and PCI cards.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 24 If you are prompted to restart your computer, click Yes. The driver installation is complete. Installing the Driver for Windows Millennium Edition (Me) The first release of Windows Me comes with driver version 6.15, which is installed automatically the first time you insert a client adapter. To upgrade to the driver on the CD that shipped with your client adapter or on Cisco.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 14 Find the location of the driver (on your CD, floppy disk, or computer’s hard drive). If you are installing the driver from the CD and your CD-ROM drive is drive D, the path should be D:\WinME. Step 15 Click Next. Step 16 When asked what you would like to install, select The updated driver (recommended) and click Next.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 1 If you are installing the driver from Cisco.com, follow the steps below. If you are installing the driver from the CD that shipped with your client adapter, go to Step 2. a. Use the computer’s web browser to access the following URL: http://www.cisco.com/public/sw-center/sw-wireless.shtml b. Locate the section for client adapter drivers and utilities. c.
Chapter 3 Installing the Client Adapter Installing the Driver B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 17 Click Close on the Cisco Aironet Wireless LAN Adapter Properties screen and exit the Control Panel. Note You must exit the Control Panel before opening it again in Step 18. Otherwise, the SSID property option will not be available when you get to Step 22. Step 18 Double-click Control Panel and Network Connections. Step 19 Right-click Wireless Network Connection.
Chapter 3 Installing the Client Adapter Installing ACU B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 3-2 Comparison of Windows XP and ACU Client Adapter Features (continued) Feature Windows XP ACU Limited Extensive Statistics screen (transmit & receive) No Yes Site survey tool No Yes RF link test tool No Yes Link status meter (graphical display) No Yes Diagnostics Status screen Step 26 Perform one of the following: • If you are planning to configure your client adapter
Chapter 3 Installing the Client Adapter Installing ACU B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 1 Close any Windows programs that are running. Step 2 Perform one of the following: • If you are installing ACU from the CD that shipped with your client adapter, follow the steps below: a. Insert the CD into your computer’s CD-ROM drive. b. Select Start > Run, enter the following path (where D is the letter of your CD-ROM drive): D:\Aironet Client Utility\Setup.exe, and click OK.
Chapter 3 Installing the Client Adapter Installing ACU B E TA D R A F T - C I S C O C O N F I D E N T I A L Allow Saved LEAP User Name and Password Enables you to create a profile in ACU that uses a saved (rather than temporary) username and password for LEAP authentication. When such a profile is used, the saved username and password are used to start the LEAP authentication process, and you are not prompted to enter them.
Chapter 3 Installing the Client Adapter Verifying Installation B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 8 The driver and client utility installation is complete. The client adapter has been installed and configured for basic operation. Go to the “Verifying Installation” section below to determine if the installation was successful. After you verify installation, go to Chapter 4 if you want to create profiles for your client adapter.
Chapter 3 Installing the Client Adapter Selecting Between Two Installed Client Adapters B E TA D R A F T - C I S C O C O N F I D E N T I A L Figure 3-1 Select A Wireless LAN Adapter Card Screen Step 2 Select the card you wish to configure from the list of available cards and click OK. Step 3 Go to Chapter 4 to create profiles for this card.
C H A P T E R 4 Using the Profile Manager This chapter explains how to use ACU’s profile manager feature to create and manage profiles for your client adapter.
Chapter 4 Using the Profile Manager Overview of Profile Manager B E TA D R A F T - C I S C O C O N F I D E N T I A L Overview of Profile Manager ACU’s profile manager feature allows you to create and manage up to 16 profiles (or saved configurations) for your client adapter. These profiles enable you to use your client adapter in different locations, each of which requires different configuration settings.
Chapter 4 Using the Profile Manager Creating a New Profile B E TA D R A F T - C I S C O C O N F I D E N T I A L Profile manager allows you to perform the following tasks related to the management of profiles: • Create a new profile, see below • Select the active profile, see page 4-4 • Edit a profile, see page 4-5 • Set a profile to default values, see page 4-6 • Rename a profile, see page 4-6 • Delete a profile, see page 4-6 • Import a profile, see page 4-7 • Export a profile, see page 4-7
Chapter 4 Using the Profile Manager Selecting the Active Profile B E TA D R A F T - C I S C O C O N F I D E N T I A L Selecting the Active Profile Follow the steps below to specify the profile that the client adapter is to use.
Chapter 4 Using the Profile Manager Modifying a Profile B E TA D R A F T - C I S C O C O N F I D E N T I A L • Step 3 Note This option is available only if two or more profiles are included in auto profile selection and if the client adapter is using PCM/LMC/PCI card driver version 8.01 or greater (or mini PCI/PC-Cardbus card driver version 2.20 or greater). Note Login scripts are not reliable if you use auto profile selection with LEAP.
Chapter 4 Using the Profile Manager Importing and Exporting Profiles B E TA D R A F T - C I S C O C O N F I D E N T I A L Setting a Profile to Default Values Step 1 Open ACU; then click the Profile Manager icon or select Profile Manager from the Commands drop-down menu. Step 2 From the Profile Management drop-down box, select the profile that you want to set to default values. Step 3 Click Use Defaults. Step 4 When prompted, click Yes to confirm your decision.
Chapter 4 Using the Profile Manager Denying Access to Non-Administrative Users B E TA D R A F T - C I S C O C O N F I D E N T I A L Importing a Profile Step 1 If the profile that you want to import is on a floppy disk, insert the disk into your computer’s floppy drive. Step 2 Open ACU; then click the Profile Manager icon or select Profile Manager from the Commands drop-down menu. Step 3 Click Import. The Import Profile screen appears. Step 4 Find the directory where the profile is located.
Chapter 4 Using the Profile Manager Denying Access to Non-Administrative Users B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 1 Open ACU by double-clicking the Aironet Client Utility (ACU) icon on your desktop. Step 2 Click the Preferences icon or select Preferences from the Options drop-down menu. The Aironet Client Utility Preferences screen appears (see Figure 4-3).
C H A P T E R 5 Configuring the Client Adapter This chapter explains how to change the configuration parameters for a specific profile.
Chapter 5 Configuring the Client Adapter Overview B E TA D R A F T - C I S C O C O N F I D E N T I A L Overview When you choose to create a new profile or edit an existing profile on the Profile Manager screen, the Properties screens appear with the name of your profile in parentheses. These screens enable you to set the configuration parameters for that profile. Note If you do not change any of the configuration parameters, the default values are used.
Chapter 5 Configuring the Client Adapter Setting System Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Setting System Parameters The System Parameters screen (see Figure 5-1) enables you to set parameters that prepare the client adapter for use in a wireless network. This screen appears after you create and save a new profile or click Edit on the Profile Manager screen. Figure 5-1 System Parameters Screen Table 5-2 lists and describes the client adapter’s system parameters.
Chapter 5 Configuring the Client Adapter Setting System Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-2 System Parameters Parameter Description Client Name A logical name for your workstation. It allows an administrator to determine which devices are connected to the access point without having to memorize every MAC address. This name is included in the access point’s list of connected devices.
Chapter 5 Configuring the Client Adapter Setting System Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-2 System Parameters (continued) Parameter Description Power Save Mode Sets your client adapter to its optimum power consumption setting. Options: CAM, Max PSP, or Fast PSP Default: CAM (Constantly Awake Mode) Power Save Mode Description CAM (Constantly Awake Mode) Keeps the client adapter powered up continuously so there is little lag in message response time.
Chapter 5 Configuring the Client Adapter Setting RF Network Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-2 System Parameters (continued) Parameter Description Network Type Specifies the type of network in which your client adapter is installed. Options: Ad Hoc or Infrastructure Default: Infrastructure Network Type Description Ad Hoc Often referred to as peer to peer.
Chapter 5 Configuring the Client Adapter Setting RF Network Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Figure 5-2 RF Network Screen Table 5-3 lists and describes the client adapter’s RF network parameters. Follow the instructions in the table to change any parameters.
Chapter 5 Configuring the Client Adapter Setting RF Network Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-3 RF Network Parameters Parameter Description Data Rate Specifies the rate at which your client adapter should transmit or receive packets to or from access points (in infrastructure mode) or other clients (in ad hoc mode). Auto Rate Selection is recommended for infrastructure mode; setting a specific data rate is recommended for ad hoc mode.
Chapter 5 Configuring the Client Adapter Setting RF Network Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-3 RF Network Parameters (continued) Parameter Description Use Short Radio Headers Selecting this checkbox sets your client adapter to use short radio headers. However, the adapter can use short radio headers only if the access point is also configured to support them and is using them.
Chapter 5 Configuring the Client Adapter Setting RF Network Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-3 RF Network Parameters (continued) Parameter Description Channel Specifies which frequency your client adapter will use as the channel for communications. These channels conform to the IEEE 802.11 Standard for your regulatory domain. • In infrastructure mode, this parameter is set automatically and cannot be changed.
Chapter 5 Configuring the Client Adapter Setting RF Network Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-3 RF Network Parameters (continued) Parameter Description Transmit Power Defines the power level at which your client adapter transmits. This value must not be higher than that allowed by your country’s regulatory agency (FCC in the U.S., DOC in Canada, ETSI in Europe, MKK in Japan, etc.).
Chapter 5 Configuring the Client Adapter Setting RF Network Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-3 RF Network Parameters (continued) Parameter Description Clear Channel Assessment Specifies the method that determines whether the channel on which your client adapter will operate is clear prior to the transmission of data.
Chapter 5 Configuring the Client Adapter Setting Advanced Infrastructure Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-3 RF Network Parameters (continued) Parameter Description Data Retries Defines the number of times a packet will be resent if the initial transmission is unsuccessful. Range: 1 to 128 Default: 16 Note Fragment Threshold If your network protocol performs its own retries, set this to a smaller value than the default.
Chapter 5 Configuring the Client Adapter Setting Advanced Infrastructure Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Figure 5-3 Advanced (Infrastructure) Screen Table 5-4 lists and describes the client adapter’s advanced infrastructure parameters. Follow the instructions in the table to change any parameters.
Chapter 5 Configuring the Client Adapter Setting Advanced Infrastructure Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-4 Advanced (Infrastructure) Parameters Parameter Description Antenna Mode (Receive) Specifies the antenna that your client adapter uses to receive data. • PC card – The PC card’s integrated, permanently attached antenna operates best when used in diversity mode. Diversity mode allows the card to use the better signal from its two antenna ports.
Chapter 5 Configuring the Client Adapter Setting Advanced Infrastructure Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-4 Advanced (Infrastructure) Parameters (continued) Parameter Description Specified Access Point 1- 4 Specifies the MAC addresses of up to four preferred access points with which the client adapter can associate. If the specified access points are not found or the client adapter roams out of range, the adapter may associate to another access point.
Chapter 5 Configuring the Client Adapter Setting Advanced Ad Hoc Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Setting Advanced Ad Hoc Parameters Note You can set advanced ad hoc parameters only if your client adapter has been set to operate in an ad hoc network. See the Network Type parameter in Table 5-2. The Advanced (Ad Hoc) screen (see Figure 5-4) enables you to set parameters that control how the client adapter operates within an ad hoc network.
Chapter 5 Configuring the Client Adapter Setting Advanced Ad Hoc Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-5 Advanced (Ad Hoc) Parameters Parameter Description Antenna Mode (Receive) Specifies the antenna that your client adapter uses to receive data. • PC card – The PC card’s integrated, permanently attached antenna operates best when used in diversity mode. Diversity mode allows the card to use the better signal from its two antenna ports.
Chapter 5 Configuring the Client Adapter Setting Advanced Ad Hoc Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-5 Advanced (Ad Hoc) Parameters (continued) Parameter Description RTS Threshold Specifies the size of the data packet that the low-level RF protocol issues to a request-to-send (RTS) packet. Setting this parameter to a small value causes RTS packets to be sent more often.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-5 Advanced (Ad Hoc) Parameters (continued) Parameter Description Beacon Period (Kµs) Specifies the duration between beacon packets, which are used to help clients find each other in ad hoc mode. Range: 20 to 976 Kµs Default: 100 Kµs Go to the next section to set additional parameters or click OK to return to the Profile Manager screen.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L This screen is different from the other Properties screens in that it presents several security features, each of which involves a number of steps. In addition, the security features themselves are complex and need to be understood before they are implemented. Therefore, this section provides an overview of the security features as well as procedures for using them.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L WEP keys, whether static or dynamic, are either 40 or 128 bits in length. 128-bit WEP keys offer a greater level of security than 40-bit WEP keys. Note Refer to the “Additional WEP Key Security Features” section on page 5-24 for information on three security features that can make your WEP keys even more secure.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Note • If LEAP was not selected during installation, the LEAP option is unavailable in ACU. If you want to be able to enable and disable LEAP, you must run the installation program again and select Modify and LEAP. Host Based EAP – Selecting this option enables you to use any 802.1X authentication type for which your operating system has built-in support.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Note The authentication process is now complete for EAP-MD5. For LEAP or EAP-TLS, the process continues. 3. If mutual authentication is successful, the client and RADIUS server derive a dynamic, session-based WEP key that is unique to the client. 4. The RADIUS server transmits the key to the access point using a secure channel on the wired LAN. 5.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Temporal Key Integrity Protocol (TKIP) This feature, also referred to as WEP key hashing, defends against an attack on WEP in which the intruder uses the initialization vector (IV) in encrypted packets to calculate the WEP key. TKIP removes the predictability that an intruder relies on to determine the WEP key by exploiting IVs. It protects both unicast and broadcast WEP keys.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 5-6 Client and Access Point Security Settings (continued) Security Feature Client Setting Access Point Setting If using ACU to configure card Enable Host Based EAP in ACU and enable MD5-Challenge in Windows XP Set up and enable WEP and enable Network-EAP If using Windows XP to configure card Enable MD5-Challenge Set up and enable WEP and enable Require EAP and
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 4 Select one of the following access point authentication options, which defines how your client adapter will attempt to authenticate to an access point: • Open Authentication – Allows your client adapter, regardless of its WEP settings, to authenticate and attempt to communicate with an access point. Open Authentication is the default setting.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Overwriting an Existing Static WEP Key Follow the steps below to overwrite an existing static WEP key. Note Step 1 You can overwrite existing WEP keys, but you cannot edit or delete them. Look at the current WEP key settings in the middle of the Network Security screen. A checkmark appears in the Already Set? box for all existing static WEP keys.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Follow the steps below to enable LEAP authentication for this profile. Step 1 Step 2 Select LEAP from the Network Security Type drop-down box on the bottom of the Network Security screen. Note When you select this option, dynamic WEP is set automatically.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 3 Step 4 Select one of the following LEAP username and password setting options: • Use Temporary User Name and Password – Requires you to enter the LEAP username and password each time the computer reboots in order to authenticate and gain access to the network.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 5 If you work in an environment with multiple domains and, therefore, want your Windows login domain to be passed to the RADIUS server along with your username, select the Include Windows Login Domain With User Name checkbox. The default setting is selected.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 2 Perform one of the following: • If you are planning to use EAP-TLS authentication, select Use Dynamic WEP Keys under WEP. • If you are planning to use EAP-MD5 authentication with static WEP, select Use Static WEP Keys under WEP. • If you are planning to use EAP-MD5 authentication without WEP, select No WEP under WEP.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 10 Select the Enable network access control using IEEE 802.1X checkbox. Step 11 Perform one of the following: Step 12 • If you are planning to use EAP-TLS, select Smart Card or other Certificate for EAP type; then go to Step 12. • If you are planning to use EAP-MD5, select MD5-Challenge for EAP type; then go to Step 16. Click Properties.
Chapter 5 Configuring the Client Adapter Setting Network Security Parameters B E TA D R A F T - C I S C O C O N F I D E N T I A L Disabling LEAP or Host-Based EAP If you ever need to disable LEAP or host-based EAP for a particular profile, follow the instructions below for your EAP authentication type.
C H A P T E R 6 Using EAP Authentication This chapter explains the sequence of events that occurs and the actions you must take when a profile that is set for EAP authentication is selected for use.
Chapter 6 Using EAP Authentication Overview B E TA D R A F T - C I S C O C O N F I D E N T I A L Overview This chapter explains the sequence of events that occurs as soon as you or ACU’s auto profile selection feature selects a profile that uses EAP authentication as well as after you eject and reinsert the client adapter, reboot the computer, log off while this profile is selected, or are informed that your username and password have expired.
Chapter 6 Using EAP Authentication Using LEAP with the Windows Username and Password B E TA D R A F T - C I S C O C O N F I D E N T I A L After a Reboot/Logoff After your computer reboots or you log off, follow the steps below to LEAP authenticate. Step 1 When the Windows login screen appears (see Figure 6-1 and Figure 6-2), enter your Windows username and password and click OK. The domain name is optional.
Chapter 6 Using EAP Authentication Using LEAP with an Automatically Prompted Login B E TA D R A F T - C I S C O C O N F I D E N T I A L The “LEAP Authentication in progress” message appears. Step 2 If your client adapter authenticates, the message disappears, and the Server Based Authentication field on the ACU Status screen shows “LEAP Authenticated.” If the authentication attempt fails, an error message appears after the LEAP timeout period has expired.
Chapter 6 Using EAP Authentication Using LEAP with an Automatically Prompted Login B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 1 When the LEAP login screen appears (see Figure 6-3), enter your LEAP username and password and click OK. The domain name is optional. Figure 6-3 Note LEAP Login Screen The LEAP login screen shown above appears on computers running Windows NT, 2000, or XP. The LEAP login screen looks slightly different on computers running other Windows operating systems.
Chapter 6 Using EAP Authentication Using LEAP with an Automatically Prompted Login B E TA D R A F T - C I S C O C O N F I D E N T I A L Figure 6-4 Note LEAP Login Screen The LEAP login screen shown above appears on computers running Windows NT, 2000, or XP. The LEAP login screen looks slightly different on computers running other Windows operating systems. The “LEAP Authentication in progress” message appears.
Chapter 6 Using EAP Authentication Using LEAP with an Automatically Prompted Login B E TA D R A F T - C I S C O C O N F I D E N T I A L Figure 6-6 Network Login Screen (Windows 2000) After Your LEAP Credentials Expire If the LEAP credentials (username and password) for your current profile expire or become invalid, follow the steps below to reauthenticate.
Chapter 6 Using EAP Authentication Using LEAP with a Manually Prompted Login B E TA D R A F T - C I S C O C O N F I D E N T I A L Using LEAP with a Manually Prompted Login After Profile Selection After you (or auto profile selection) select a profile that uses LEAP authentication but specifies that the process be manually invoked, follow the steps below to LEAP authenticate. Step 1 When the LEAP login screen appears (see Figure 6-7), enter your LEAP username and password and click OK.
Chapter 6 Using EAP Authentication Using LEAP with a Manually Prompted Login B E TA D R A F T - C I S C O C O N F I D E N T I A L Figure 6-8 Step 4 Commands Drop-Down Menu When the LEAP login screen appears (see Figure 6-9), enter your LEAP username and password and click OK. The domain name is optional. Figure 6-9 Note LEAP Login Screen The LEAP login screen shown above appears on computers running Windows NT, 2000, or XP.
Chapter 6 Using EAP Authentication Using LEAP with a Saved Username and Password B E TA D R A F T - C I S C O C O N F I D E N T I A L Step 5 If your client adapter authenticates, the message disappears, and the Server Based Authentication field on the ACU Status screen shows “LEAP Authenticated.” If the authentication attempt fails, an error message appears after the LEAP timeout period has expired. Refer to the “Error Messages” section in Chapter 9 for the necessary action to take.
Chapter 6 Using EAP Authentication Using Host-Based EAP B E TA D R A F T - C I S C O C O N F I D E N T I A L After a Reboot/Logoff After your computer reboots or you log off, the following events occur: 1. After you enter your Windows username and password, the LEAP authentication process begins automatically using your saved LEAP username and password. 2.
Chapter 6 Using EAP Authentication Using Host-Based EAP B E TA D R A F T - C I S C O C O N F I D E N T I A L EAP-TLS Step 1 If a pop-up message appears above the Windows system tray informing you that you need to accept a certificate to begin the EAP authentication process, click the message and follow the instructions provided to accept the certificate. Note You should not have to accept a certificate for future authentication attempts.
Chapter 6 Using EAP Authentication Using Host-Based EAP B E TA D R A F T - C I S C O C O N F I D E N T I A L EAP-MD5 After your computer reboots or you log off and you enter your Windows username and password, follow the steps below to EAP authenticate. Step 1 When a pop-up message appears above the Windows system tray informing you that you need to enter your credentials to access the network, click the message. The Wireless Network Connection screen appears.
Chapter 6 Using EAP Authentication Using Host-Based EAP B E TA D R A F T - C I S C O C O N F I D E N T I A L Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows 6-14 OL-1394-03
C H A P T E R 7 Performing Diagnostics This chapter explains how to use ACU to perform user-level diagnostics.
Chapter 7 Performing Diagnostics Overview of ACU Diagnostic Tools B E TA D R A F T - C I S C O C O N F I D E N T I A L Overview of ACU Diagnostic Tools In addition to enabling you to configure your client adapter for use in various types of networks, ACU provides tools that enable you to assess the performance of the client adapter and other devices on the wireless network.
Chapter 7 Performing Diagnostics Setting Parameters that Affect ACU Diagnostic Tools B E TA D R A F T - C I S C O C O N F I D E N T I A L Figure 7-1 Step 3 Aironet Client Utility Preferences Screen Table 7-2 lists and describes the parameters that affect the operation of ACU diagnostic tools. Follow the instructions in the table to change any parameters.
Chapter 7 Performing Diagnostics Viewing the Current Status of Your Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-2 Parameters Affecting ACU Diagnostic Tools Parameter Description Screen Update Timer (seconds between updates) Specifies how often the Status and Statistics screens are updated. You can type a number in the edit box or use the slider to change this value.
Chapter 7 Performing Diagnostics Viewing the Current Status of Your Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Figure 7-2 Status Screen (with Signal Strength as a Percentage) Figure 7-3 Bottom of Status Screen (with Signal Strength in dBm) Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows OL-1394-03 7-5
Chapter 7 Performing Diagnostics Viewing the Current Status of Your Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-3 interprets each element of the Status screen. Table 7-3 Client Adapter Status Status Description Device A description of your client adapter. Manufacturer The manufacturer of your client adapter. Firmware Version The version of the firmware that is currently running on your client adapter.
Chapter 7 Performing Diagnostics Viewing the Current Status of Your Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-3 Client Adapter Status (continued) Status Description Using Short Radio Headers Indicates whether your client adapter is actually using short radio headers. Value: Using Message Integrity Check Yes or No Note This setting appears only for 2.4-GHz client adapters.
Chapter 7 Performing Diagnostics Viewing the Current Status of Your Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-3 Client Adapter Status (continued) Status Description WEP (Wired Equivalent Privacy) Your client adapter’s current WEP status. Value: Note Authentication Type Note Refer to the “Setting Network Security Parameters” section on page 5-20 for information on setting the authentication type.
Chapter 7 Performing Diagnostics Viewing the Current Status of Your Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-3 Client Adapter Status (continued) Status Description Data Rate The rate at which your client adapter has been configured to transmit or receive data packets. Value: Note Current Power Level Note Note Note Refer to the Transmit Power parameter in Table 5-3 for information on the client adapter’s available power levels.
Chapter 7 Performing Diagnostics Viewing the Current Status of Your Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-3 Client Adapter Status (continued) Status Description Power Save Mode The client adapter’s current power consumption setting. Value: Note CAM, Max PSP, or Fast PSP Refer to the Power Save Mode parameter in Table 5-2 for information on setting the client adapter’s power save mode.
Chapter 7 Performing Diagnostics Viewing the Current Status of Your Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-3 Client Adapter Status (continued) Status Description Current Beacons Received (5-GHz client adapters) The percentage of beacon packets received versus those expected to be received. The higher the value and the more green the bar graph is, the clearer the signal.
Chapter 7 Performing Diagnostics Viewing Statistics for Your Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Viewing Statistics for Your Client Adapter ACU enables you to view statistics that indicate how data is being received and transmitted by your client adapter. To view your client adapter’s statistics, open ACU; then click the Statistics icon or select Statistics from the Commands drop-down menu. The Statistics screen appears (see Figure 7-4).
Chapter 7 Performing Diagnostics Viewing Statistics for Your Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-4 describes each statistic that is displayed for your client adapter. Table 7-4 Client Adapter Statistics Statistic Description Receive Statistics Multicast Packets Received The number of multicast packets that were received successfully. Broadcast Packets Received The number of broadcast packets that were received successfully.
Chapter 7 Performing Diagnostics Viewing Statistics for Your Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-4 Client Adapter Statistics (continued) Statistic Description AP Mismatches The number of times the client adapter tried to associate to an access point but was unable to because the access point was not the adapter’s specified access point.
Chapter 7 Performing Diagnostics Viewing Statistics for Your Client Adapter B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-4 Client Adapter Statistics (continued) Statistic Description Packets No MIC Seed The number of packets that were discarded due to no MIC seed being received. Note Packets Wrong MIC Sequence This field is not displayed if the client adapter’s driver does not support MIC functionality or MIC is not enabled on the access point.
Chapter 7 Performing Diagnostics Viewing the Link Status Meter B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-4 Client Adapter Statistics (continued) Statistic Description Packets Deferred Energy Detect The number of packets that were delayed because RF energy was already detected. This condition is usually caused by another radio transmitting a packet or by some other RF source jamming the signal (such as a microwave oven).
Chapter 7 Performing Diagnostics Viewing the Link Status Meter B E TA D R A F T - C I S C O C O N F I D E N T I A L Figure 7-5 Link Status Meter Screen The Link Status Meter screen provides a graphical display of the following: • Signal strength – The strength of the client adapter’s radio signal at the time packets are being received. It is displayed as a percentage along the vertical axis. • Signal quality – The quality of the client adapter’s radio signal at the time packets are being received.
Chapter 7 Performing Diagnostics Running an RF Link Test B E TA D R A F T - C I S C O C O N F I D E N T I A L Running an RF Link Test ACU’s link test tool sends out pings to assess the performance of the RF link. The test is designed to be performed multiple times at various locations throughout your area and is run at the data rate set on ACU’s RF Network Properties screen (see the Data Rate parameter in Table 5-3).
Chapter 7 Performing Diagnostics Running an RF Link Test B E TA D R A F T - C I S C O C O N F I D E N T I A L Figure 7-6 Linktest Screen Step 2 In the IP Address of Access Point field, enter the IP address of the access point or other wireless device with which you want to test the RF link. Step 3 You can set the link test to run until it has attempted to send a specific number of packets or to run until you stop it.
Chapter 7 Performing Diagnostics Running an RF Link Test B E TA D R A F T - C I S C O C O N F I D E N T I A L Note Step 5 The Windows TCP/IP stack fragments (splits up) packets that are greater than 512 bytes. Therefore, the number of transmitted packets does not match the number of received packets (even if none are lost) if the packet size is greater than 512 bytes. Click the Start button to run the link test. While the test is running, statistics are displayed and updated periodically.
Chapter 7 Performing Diagnostics Running an RF Link Test B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-5 interprets the statistics that are displayed on the Linktest screen while the link test is running. Table 7-5 Linktest Statistics Linktest Statistic Description Packets Received OK The number of packets of the specified size that have been received successfully. Packets Transmitted OK The number of packets of the specified size that have been transmitted successfully.
Chapter 7 Performing Diagnostics Running an RF Link Test B E TA D R A F T - C I S C O C O N F I D E N T I A L Table 7-5 Linktest Statistics (continued) Linktest Statistic Description Current Beacons Received (5-GHz client adapters) The percentage of beacon packets received versus those expected to be received. The higher the value and the more green the bar graph is, the clearer the signal.