Cisco Systems CB21AG manual Guidelines, Additional Information

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Appendix F Performing a Site Survey

Overview

Overview

Note This appendix applies only to people who are responsible for conducting a site survey to determine the best placement of infrastructure devices within a wireless network.

Note The site survey utility is available in Install Wizard 2.0 and later.

The site survey utility can assist you in conducting a site survey. The utility operates at the RF level and is used to determine the best placement and coverage (overlap) for your network’s infrastructure devices. During a site survey, the current status of the network is read from the client adapter, and the status display is updated four times per second so you can accurately gauge network performance. The feedback that you receive can help you to eliminate areas of low RF signal levels that can result in a loss of connection between the client adapter and its associated access point (or other infrastructure device).

The site survey utility operates in a passive mode. That is, it does not initiate any RF network traffic; it simply listens to the traffic that the client adapter hears and displays the results.

Guidelines

Keep the following guidelines in mind when preparing to perform a site survey:

•Perform the site survey when the RF link is functioning with all other systems and noise sources operational.

•Execute the site survey entirely from the mobile station.

Additional Information

Also consider the following operating and environmental conditions when performing a site survey:

•Data rates—Sensitivity and range are inversely proportional to data bit rates. Therefore, the maximum radio range is achieved at the lowest workable data rate, and a decrease in receiver threshold sensitivity occurs as the radio data increases.

•Antenna type and placement—Proper antenna configuration is a critical factor in maximizing radio range. As a general rule, range increases in proportion to antenna height.

•Physical environment—Clear or open areas provide better radio range than closed or filled areas. Also, the less cluttered the work environment, the greater the range.

•Obstructions—A physical obstruction such as metal shelving or a steel pillar can hinder the performance of wireless devices. Avoid placing these devices in a location where a metal barrier is between the sending and receiving antennas.

•Building materials—Radio penetration is greatly influenced by the building material used in construction. For example, drywall construction allows greater range than concrete blocks, and metal or steel construction is a barrier to radio signals.

Note Refer to the hardware installation guide for your infrastructure device for additional information on factors affecting placement.

Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide for Windows

 

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Contents Corporate Headquarters Customer Order Number Text Part Number OL-4211-03Copyright 2005 Cisco Systems, Inc All rights reserved N T E N T S IiiAssembling the Antenna Overview Pop-Up Menu Help Exit Select Profile ViiAntenna Installation Warning B-3 ViiiWPA OL-4211-03 Preface Following topics are covered in this sectionAudience PurposeOrganization XiiConventions XiiiXiv Related Publications Obtaining DocumentationCisco.com Documentation DVDCisco Product Security Overview Ordering DocumentationDocumentation Feedback XviReporting Security Problems in Cisco Products Obtaining Technical AssistanceCisco Technical Support Website An emergency, you can also reach Psirt by telephone 877 408Xviii Submitting a Service RequestDefinitions of Service Request Severity Obtaining Additional Publications and Information XixOL-4211-03 Product Overview Introduction to the Client Adapters TerminologyClient Adapter Model Number Description AIR-CB21AGHardware Components RadioRadio Antenna LEDsClient Utilities Software ComponentsDriver Network Configurations Using Client Adapters Ad Hoc Wireless LANAccess Point Root Unit Wired LAN Preparing for Installation Safety Guidelines Safety informationFCC Safety Compliance Statement Package Contents Unpacking the Client AdapterSystem Requirements For Client Devices Site RequirementsFor Infrastructure Devices OL-4211-03 Installing the Client Adapter Inserting a Client Adapter Inserting a PC-Cardbus CardBracket screws Inserting a PCI CardChanging the Bracket Inserting the Card Assembling the Antenna Inserting a PCI Card into a PCMounting the Antenna Inserting the Antenna into Its BaseBottom of Antenna Base Mounting the Antenna Installing the Client Adapter Software Preparing Setup Window Click Next. The Setup Type window appears see Figure Cisco Aironet Installation Program Window10 Setup Type Window 11 Install Cisco Aironet Site Survey Utility Window 12 Choose Destination Location Window 13 Select Program Folder Window 14 Important Please Read! Window Feature 15 Choose Configuration Tool WindowLeap or EAP-FAST authentication With dynamic WEP EAP-TLS or Peap authentication YesSecurity Static WEP Yes ReceiveClick Properties Installing a Microsoft Hot Fix for Group Policy Delay Page OL-4211-03 Using the Profile Manager Overview of Profile Manager Opening Profile ManagerField Description SSID1SSID2 SSID3Creating a New Profile Available Infrastructure and Ad Hoc Networks WindowSNR Profile Management General Window Including a Profile in Auto Profile Selection Auto Profile Selection Management WindowOL-4211-03 Selecting the Active Profile Modifying a Profile Importing and Exporting ProfilesEditing a Profile Deleting a ProfileImporting a Profile Exporting a ProfileExport Profile Window Configuring the Client Adapter Overview Parameter Category NumberSetting General Parameters Parameter Description Reconfigured Auto profile selection or configured for use in an ad hocClient adapter to roam to that network without having to be Auto profile selectionSetting Advanced Parameters Profile Management Advanced WindowRadio Band Transmit Power Level Profile Management Advanced Parameters Network Type Description Parameter Description Parameter Description Default Open Setting Security Parameters Preferred Access Points WindowOverview of Security Features Profile Management Security WindowStatic WEP Keys EAP with Dynamic WEP KeysConfiguring the Client Adapter Setting Security Parameters LEAP, EAP-FAST, EAP-TLS, Peap EAP-GTC, or Peap EAP-MSCHAP V2,WPA and WPA2 Cckm Fast Secure RoamingReporting Access Points that Fail Leap Authentication Synchronizing Security Features Additional WEP Key Security FeaturesSecurity Feature Client Setting Access Point Setting SsidWPA Security Feature Client Setting Access Point Setting LEAP, EAP-FAST, EAP-TLS Or later, choose a cipher suite that isWPA/WPA2/CCKM MICEnabling Static WEP TkipPeap EAP-MSCHAP Interval to any value other thanConfiguring the Client Adapter Setting Security Parameters Enabling WPA/WPA2 Passphrase Define WPA/WPA2 Pre-Shared Key WindowEnabling Leap Leap Settings Window Configuring the Client Adapter Setting Security Parameters Configuring the Client Adapter Setting Security Parameters Enabling EAP-FAST EAP-FAST Settings Window Configuring the Client Adapter Setting Security Parameters Click Select More Select EAP-FAST PAC Window 10 Import EAP-FAST PAC File Window Configuring the Client Adapter Setting Security Parameters Deleting a Manually Provisioned PAC File Enabling EAP-TLS or Peap Enabling EAP-TLS 12 Define Certificate WindowConfiguring the Client Adapter Setting Security Parameters Enabling Peap EAP-GTC 13 Define Peap EAP-GTC Configuration Window 14 Configuration Settings Window Configuring the Client Adapter Setting Security Parameters 15 Define Peap EAP-MSCHAP V2 Configuration Window Enabling Peap EAP-MSCHAP16 Configuration Settings Window Configuring the Client Adapter Setting Security Parameters Configuring the Client Adapter Setting Security Parameters Configuring the Client Adapter Setting Security Parameters Enabling the QoS Packet Scheduler on Windows Enabling Wi-Fi MultimediaDisabling Static WEP, WPA/WPA2 Passphrase, or EAP 17 Wireless Cisco Connection Properties Window 18 Select Network Component Type Window Enabling the QoS Packet Scheduler on Windows XP Click Control Panel Double-clickNetwork ConnectionsSetting Roaming Parameters in the Windows Control Panel Follow these steps to access the roaming parametersWireless Mode Using EAP Authentication Using Leap or EAP-FAST Leap or EAP-FAST Authentication Status WindowAfter Profile Activation or Card Insertion Stage ExplanationAfter a Reboot or Logon After Your EAP-FAST Password ExpiresUsing Leap or EAP-FAST with an Automatically Prompted Login Enter Wireless Network Password Window After Your EAP-FAST Password Expires Using Leap or EAP-FAST with a Manually Prompted Login After Profile ActivationAfter a Reboot, Logon, or Card Insertion Action Drop-Down Menu After Your EAP-FAST Password Expires Using Leap or EAP-FAST with a Saved Username and Password Using EAP-TLS 10 Please Change Password WindowOTP Databases Only Using Peap EAP-GTCWindows NT or 2000 Domain Databases or Ldap Databases Only Using Peap EAP-MSCHAP Restarting the Authentication ProcessOL-4211-03 Viewing Status and Statistics Overview of ADU Status and Statistics Tools ToolStatus Statistics NumberDisplays the signal strength Signal-to-noise ratio as a percentageViewing the Current Status of Your Client Adapter 3interprets each element of the Current Status windowStatus Description Status Description Details on these server-based authentication types 4interprets each element of the Advanced Status windowNone MIC is disabled MIC is enabled and is being used withMichael MIC is enabled and is being used with WPA and Tkip MMHWMM Status Description Status Description Cisco Aironet Desktop Utility Diagnostics Window Viewing Statistics for Your Client AdapterStatistic Description Advanced Statistics Window6interprets each element of the Advanced Statistics window Point Integrity check MIC value when Ckip was being usedCkip MIC OK OL-4211-03 Using the Aironet System Tray Utility Astu Infrastructure mode or another client in ad hoc mode Overview of AstuAstu Icon Icon DescriptionTool Tip Window Status Element DescriptionConnection Status Description This option enables you to access the online help Pop-Up MenuHelp Following sections describe each Astu pop-up menu optionTroubleshooting ExitOpen Aironet Desktop Utility PreferencesEnable/Disable Radio Select Profile Manual LoginReauthenticate Show Connection Status Connection Status WindowConnection Status Window Elements Ssid OL-4211-03 Routine Procedures Removing a PCI Card Removing a Client AdapterRemoving a PC-Cardbus Card Client Adapter Software Procedures Upgrading the Client Adapter SoftwarePrevious Installation Detected Window Choose Update the previous installation and click Next Uninstalling the Client Adapter Software Choose Uninstall the previous installation and click NextExiting ADU ADU ProceduresOpening ADU Finding the Version of ADU Viewing Client Adapter InformationAstu Procedures Accessing Online HelpRefer to for instructions on using Astu Enabling or Disabling Your Client Adapter’s RadioOL-4211-03 Troubleshooting 10-1Accessing the Latest Troubleshooting Information Interpreting the Indicator LEDsStatus LED green Activity LED amber Condition 10-2Troubleshooting the Client Adapter Using the Troubleshooting UtilityTroubleshooting Information Number Diagnosing Your Client Adapter’s OperationTroubleshooting Utility Window 10-4Troubleshooting Utility Window with Test Results 10-5Troubleshooting Utility Window Detailed Report 10-6Saving the Detailed Report to a Text File 10-710-8 Client Adapter Recognition ProblemsDisabling the Microsoft 802.1X Supplicant Windows 2000 Only Reboot your computer Resolving Resource ConflictsResolving Resource Conflicts in Windows 10-910-10 Problems Associating to an Access PointResolving Resource Conflicts in Windows XP Problems Connecting to the Network Prioritizing Network ConnectionsParameters Missing from Profile Management Windows 10-11Error Messages 10-1210-13 10-14 10-15 10-16 10-17 10-18 10-19 10-20 10-21 10-22 10-23 10-24 Technical Specifications Physical Specifications Radio SpecificationsESD KV human body modelAppendix a Technical Specifications Receiver sensitivity 802.11a DBm @ 6, 9, 12, and 18 MbpsDBm @ 24 Mbps DBm @ 36 MbpsIndoor typical Outdoor typical Power Specifications Safety and Regulatory Compliance SpecificationsTranslated Safety Warnings Explosive Device Proximity Warning Antenna Installation Warning Appendix B Translated Safety Warnings Appendix B Translated Safety Warnings Appendix B Translated Safety Warnings Declarations of Conformity and Regulatory Information Models AIR-CB21AG-A-K9, AIR-PI21AG-A-K9 USADepartment of Communications Canada Canadian Compliance StatementOL-4211-03 Cisco Aironet CB21AG Wireless LAN Client Adapter Declaration of Conformity StatementCisco Aironet PI21AG Wireless LAN Client Adapter English Translation Declaration of Conformity for RF ExposureJapanese Translation 5-GHz Client Adapters Chinese TranslationEnglish Translation Communication ACTGHz Client Adapters This equipment is limited for indoor useOL-4211-03 Channels, Power Levels, and Antenna Gains Regulatory Domains ChannelsIeee 802.11a Ieee 802.11b/g Maximum Power Levels and Antenna Gains Ieee 802.11bData Rate With 1-dBi Antenna GainIeee 802.11g Mbps 31.6OL-4211-03 P E N D I X E Overview EAP with Dynamic WEP Keys WPA Configuring the Client Adapter Configuring the Client Adapter Page Configuring the Client Adapter Page Enabling EAP-TLS Authentication For EAP type, choose Smart Card or other Certificate Configuring the Client Adapter Enabling Peap Authentication Figure E-6 Protected EAP Properties Window Figure E-7 EAP MSCHAPv2 Properties Window Figure E-8 Peap Properties Window Figure E-9 Generic Token Card Properties Window Associating to an Access Point Using Windows XP Figure E-10 Wireless Network Connection Status WindowPerforming a Site Survey Guidelines Additional InformationOpening the Site Survey Utility Selecting the Client AdapterUsing the Associated AP Status Tab Specifying Display UnitsViewing the Access Point’s Status Table F-1 Site Survey Utility Associated AP Status Description Using the AP Scan List Tab Viewing the AP Scan List Figure F-5 Site Survey Utility AP Scan ListRssi Value 1, 2, 3, or Pausing the AP Scan ListCCX Detailed Information Parameter Description Access point’s wireless networkViewing AP Details Rssi Generating an AP Scan Log File Figure F-7 Site Survey Utility Log FileAccessing Online Help Uninstalling the Site Survey UtilityFinding the Version of the Site Survey Utility Exiting the Site Survey UtilityPage Wireless network composed of stations without access points StationsStandard Set of characters that contains both letters and numbersGL-2 Setting must be within the range of 64 to 2312 bytes GL-3Ethernet 802.3 and wireless LAN 802.11 specifications GL-4GL-5 GL-6 Computing device with an installed client adapter Protection and 802.1X for authenticated key management802.1X for authenticated key management GL-7GL-8 IN-1 Authentication Mode parameterSelecting in ADU Pausing Viewing ADUSelecting the active profile IN-2IN-3 AstuCAM ADU Windows XP Data encryption ADU Site survey utilityFCC C-2 IN-4IN-5 CRC FCCACK CTS RTSIN-7 Disabling Enabling MMH MICStatus With Leap Modify button IN-8IN-9 IN-10 IN-11 IN-12 IN-13 Regulatory compliance Safety Spread spectrumSetting Viewing ADU Third-party tool, enabling in Install Wizard Initial windowWith test results IN-14Security features IN-15IN-16
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