Cisco Systems 102066 Cisco Aironet 1240 Series 802.11b/g Access Point User Manual

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Americas HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706 USAhttp://www.cisco.comTel: 408 526-4000800 553-NETS (6387)Fax: 408 527-0883Cisco Aironet 1240AG Series Access Point Hardware Installation GuideApril 2007Text Part Number: OL-8371-05

iiiCisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05CONTENTSPreface ixAudience ixPurpose ixOrganization ixConventions xRelated Publications xiiLocating the Product Serial Number xiiiObtaining Documentation, Obtaining Support, and Security Guidelines xivCHAPTER 1Overview 1-1Product Terminology 1-1Autonomous Access Points 1-1Lightweight Access Points 1-2Guidelines for Using Cisco Aironet Lightweight Access Points 1-2Hardware Features 1-3Single or Dual-Radio Operation 1-5Antennas Supported 1-5Ethernet Port 1-5Console Port 1-5LEDs 1-6Power Sources 1-6UL 2043 Certification 1-7Anti-Theft Features 1-7Network Examples with Autonomous Access Points 1-8Root Access Point on a Wired LAN 1-9Repeater Unit that Extends Wireless Range 1-10Central Unit in an All-Wireless Network 1-11Bridge Network with Wireless Clients 1-11Point-to-Point Bridge Configuration 1-12Workgroup Bridge Network 1-12Network Example with Lightweight Access Points 1-13

ContentsivCisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05CHAPTER 2Installing the Access Point 2-1Safety Information 2-2FCC Safety Compliance Statement 2-2General Safety Guidelines 2-2Warnings 2-2Unpacking the Access Point 2-3Package Contents 2-3Basic Installation Guidelines 2-4Controller Discovery Process for Lightweight Access Points 2-4Deploying the Access Points on the Wireless Network 2-5Access Point Layout and Connectors 2-6Mounting Overview 2-7Mounting on a Horizontal or Vertical Surface 2-9Mounting Below a Suspended Ceiling 2-10Mounting Above a Suspended Ceiling 2-11Mounting Access Point on a Desktop or Shelf 2-14Cable Security Bracket 2-14Removing the Cable Security Bracket 2-15Attaching the Access Point to the Mounting Plate 2-16Securing the Access Point 2-17Using a Security Cable 2-17Securing the Access Point to the Mounting Plate 2-18Connecting the Ethernet and Power Cables 2-20Connecting to an Ethernet Network with an Inline Power Source 2-21Connecting to an Ethernet Network with Local Power 2-22Powering Up the Access Point 2-22CHAPTER 3Troubleshooting 1240AG Series Autonomous Access Points 3-1Checking the Lightweight Access Point LEDs 3-2Checking Basic Settings 3-3Default IP Address Behavior 3-4Enabling the Radio Interfaces 3-4SSID 3-4WEP Keys 3-4Security Settings 3-5Low Power Condition 3-5Intelligent Power Management 3-6

ContentsvCisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Inline Power Status Messages 3-7Configuring Power Using the CLI 3-9Issuing the Cisco IOS Command Using the CLI 3-10Configuring the Access Point System Power Settings Using a Browser 3-11Running the Carrier Busy Test 3-13Running the Ping Test 3-14Resetting to the Default Configuration 3-14Using the MODE Button 3-15Using the Web Browser Interface 3-15Reloading the Access Point Image 3-16Using the MODE Button 3-16Web Browser Interface 3-17Browser HTTP Interface 3-17Browser TFTP Interface 3-18Obtaining the Access Point Image File 3-19Connecting to the Access Point Locally 3-20Obtaining the TFTP Server Software 3-20CHAPTER 4Troubleshooting 1240AG Series Lightweight Access Points 4-1Guidelines for Using Cisco Aironet Lightweight Access Points 4-2Using DHCP Option 43 4-2Checking the Lightweight Access Point LEDs 4-3Low Power Condition for Lightweight Access Points 4-5Intelligent Power Management 4-5Configuring Power Using Controller CLI Commands 4-6Manually Configuring Controller Information Using the Access Point CLI 4-7Configuring Controller Information 4-8Clearing Manually Entered Controller Information 4-8Manually Resetting the Access Point to Defaults 4-8Returning the Lightweight Access Point to Autonomous Mode 4-9Using a Controller to Return the Access Point to Autonomous Mode 4-9Using the MODE Button to Return the Access Point to Autonomous Mode 4-9MODE Button Setting 4-10Obtaining the Autonomous Access Point Image File 4-10Connecting to the Access Point Locally 4-11Obtaining the TFTP Server Software 4-12

ContentsviCisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05APPENDIX ATranslated Safety Warnings A-1APPENDIX BDeclarations of Conformity and Regulatory Information B-1Manufacturers Federal Communication Commission Declaration of Conformity Statement B-2VCCI Statement for Japan B-3Department of Communications—Canada B-4Canadian Compliance Statement B-4European Community, Switzerland, Norway, Iceland, and Liechtenstein B-4Declaration of Conformity with Regard to the 1999/5/EC (R&TTE Directive) B-5Declaration of Conformity for RF Exposure B-7Guidelines for Operating Cisco Aironet Access Points in Japan B-8Japanese Translation B-8English Translation B-8Administrative Rules for Cisco Aironet Access Points in Taiwan B-9Access Points with IEEE 802.11a Radios B-9Chinese Translation B-9English Translation B-9All Access Points B-10Chinese Translation B-10English Translation B-10Declaration of Conformity Statements B-11Declaration of Conformity Statements for European Union Countries B-11APPENDIX CAccess Point Specifications C-1APPENDIX DChannels and Maximum Power Levels D-1APPENDIX EConsole Cable Pinouts E-1Overview E-2Console Port Signals and Pinouts E-2APPENDIX FPriming Lightweight Access Points Prior to Deployment F-1APPENDIX GConfiguring DHCP Option 43 for Lightweight Access Points G-1Overview G-2Configuring Option 43 for 1000 Series Access Points G-3Configuring Option 43 for 1100, 1130, 1200, 1240, and 1300 Series Lightweight Access Points G-4

ContentsviiCisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05GLOSSARYINDEX

ContentsviiiCisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05

ixCisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05PrefaceAudienceThis guide is for the networking professional who installs and manages the Cisco Aironet 1240AG Series Access Point. The 1240AG series access point is available in autonomous and lightweight configurations. To use this guide with autonomous access points, you should have experience working with Cisco IOS software and be familiar with the concepts and terminology of wireless local area networks.To use this guide with lightweight access points, you should have experience working with a Cisco Wireless LAN Controller and be familiar with the concepts and terminology of wireless local area networks.PurposeThis guide provides the information you need to install your autonomous or lightweight access point.For detailed information about Cisco IOS commands used with autonomous access points, refer to the Cisco IOS Command Reference for Cisco Aironet Access Points and Bridges for this release. For information about the standard Cisco IOS Release 12.3 commands, refer to the Cisco IOS documentation set available from the Cisco.com home page at Technical Support & Documentation. On the Technical Support & Documentation home page, click Cisco IOS Software > Cisco IOS Software Releases 12.3 Mainline.For information about Cisco Wireless LAN Controllers, refer to the Cisco documentation sets available from the Cisco.com home page at Technical Support & Documentation. On the Technical Support & Documentation home page, click Wireless and the documentation is listed under the “Wireless LAN Controllers” section.OrganizationThis guide is organized into these chapters:Chapter 1, “Overview,” lists the software and hardware features of the access point and describes the access point’s role in your network.Chapter 2, “Installing the Access Point,” describes how to mount the access point on a desktop, wall, or ceiling, how to connect Ethernet, serial, and power cables, and provides an installation summary, safety warnings, and general guidelines.

xCisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05PrefaceConventionsChapter 3, “Troubleshooting 1240AG Series Autonomous Access Points,” provides troubleshooting procedures for basic problems with the autonomous access point.Chapter 4, “Troubleshooting 1240AG Series Lightweight Access Points,” provides troubleshooting procedures for basic problems with the lightweight access point.Appendix A, “Translated Safety Warnings,” provides translations of the safety warnings that appear in this publication.Appendix B, “Declarations of Conformity and Regulatory Information,” provides declarations of conformity and regulatory information for the access point.Appendix C, “Access Point Specifications,” lists technical specifications for the access point.Appendix D, “Channels and Maximum Power Levels,” lists the autonomous access point radio channels and the maximum power levels supported by the world’s regulatory domains.Appendix E, “Console Cable Pinouts,” identifies the pinouts for the serial console cable that connects to the access point’s serial console port. Appendix F, “Priming Lightweight Access Points Prior to Deployment,” describes the procedure to prime access points with controller information.Appendix G, “Configuring DHCP Option 43 for Lightweight Access Points,” describes the procedure to configure DHCP Option 43 for lightweight access points.ConventionsThis publication uses these conventions to convey instructions and information:Command descriptions use these conventions:•Commands and keywords are in boldface text.•Arguments for which you supply values are in italic.•Square brackets ([ ]) mean optional elements.•Braces ({ }) group required choices, and vertical bars ( | ) separate the alternative elements.•Braces and vertical bars within square brackets ([{ | }]) mean a required choice within an optional element.Interactive examples use these conventions:•Terminal sessions and system displays are in screen font.•Information you enter is in boldface screen font.•Nonprinting characters, such as passwords or tabs, are in angle brackets (< >).Notes, cautions, and timesavers use these conventions and symbols:Tip Means the following will help you solve a problem. The tips information might not be troubleshooting or even an action, but could be useful information.Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in this manual.

xiCisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05PrefaceConventionsCaution Means reader be careful. In this situation, you might do something that could result equipment damage or loss of data.WarningThis warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. (To see translations of the warnings that appear in this publication, refer to the appendix “Translated Safety Warnings.”)WaarschuwingDit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico’s en dient u op de hoogte te zijn van standaard maatregelen om ongelukken te voorkomen. (Voor vertalingen van de waarschuwingen die in deze publicatie verschijnen, kunt u het aanhangsel “Translated Safety Warnings” (Vertalingen van veiligheidsvoorschriften) raadplegen.)VaroitusTämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. (Tässä julkaisussa esiintyvien varoitusten käännökset löydät liitteestä "Translated Safety Warnings" (käännetyt turvallisuutta koskevat varoitukset).)AttentionCe 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. Pour obtenir les traductions des mises en garde figurant dans cette publication, veuillez consulter l’annexe intitulée « Translated Safety Warnings » (Traduction des avis de sécurité).WarnungDieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur Vermeidung von Unfällen bewußt. (Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise finden Sie im Anhang mit dem Titel “Translated Safety Warnings” (Übersetzung der Warnhinweise).)AvvertenzaQuesto simbolo di avvertenza indica un pericolo. Si è in una situazione che può causare infortuni. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli relativi ai circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti. La traduzione delle avvertenze riportate in questa pubblicazione si trova nell’appendice, “Translated Safety Warnings” (Traduzione delle avvertenze di sicurezza).AdvarselDette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til personskade. Før du utfører arbeid på utstyr, må du være oppmerksom på de faremomentene som elektriske kretser innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker. (Hvis du vil se oversettelser av de advarslene som finnes i denne publikasjonen, kan du se i vedlegget "Translated Safety Warnings" [Oversatte sikkerhetsadvarsler].)

xiiCisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05PrefaceRelated PublicationsRelated PublicationsThese documents provide information about the autonomous access point:•Release Notes for Cisco Aironet Access Points•Cisco IOS Command Reference for Cisco Aironet Access Points and Bridges•Cisco IOS Software Configuration Guide for Cisco Aironet Access PointsThese documents provide information about the lightweight access point and the controller:•Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points •Cisco IOS Software Configuration Guide for Cisco Aironet Access PointsClick this link to browse to the Cisco Wireless documentation home page:http://www.cisco.com/en/US/products/hw/wireless/tsd_products_support_category_home.htmlTo browse to the 1240AG series access point documentation, click Cisco Aironet 1240AG Series listed under “Wireless LAN Access.” To browse to the Cisco Wireless LAN Controller documentation, click Cisco 4400 Series Wireless LAN Controllers or Cisco 2000 Series Wireless LAN Controllers listed under “Wireless LAN Controllers.”AvisoEste símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos fisicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir possíveis acidentes. (Para ver as traduções dos avisos que constam desta publicação, consulte o apêndice “Translated Safety Warnings” - “Traduções dos Avisos de Segurança”).¡Advertencia!Este símbolo de aviso significa peligro. Existe riesgo para su integridad física. Antes de manipular cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y familiarizarse con los procedimientos estándar de prevención de accidentes. (Para ver traducciones de las advertencias que aparecen en esta publicación, consultar el apéndice titulado “Translated Safety Warnings.”)Varning!Denna varningssymbol signalerar fara. Du befinner dig i en situation som kan leda till personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och känna till vanligt förfarande för att förebygga skador. (Se förklaringar av de varningar som förekommer i denna publikation i appendix "Translated Safety Warnings" [Översatta säkerhetsvarningar].)

xiiiCisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05PrefaceLocating the Product Serial NumberLocating the Product Serial NumberThe access point serial number is on the bottom of the housing (refer to Figure 1).Figure 1 Location of Serial Number Label The access point serial number label contains the following information:•Model number, such as AIR-AP1242AG-A-k9 or AIR-LAP1242AG-A-k9•Serial number, such as VDF0636XXXX (11 alphanumeric digits)•MAC address, such as 00abc65094f3 (12 hexadecimal digits)•Location of manufacture, such as Made in SingaporeYou need your product serial number when requesting support from the Cisco Technical Assistance Center.CAUTIONHotSurfaces135531, 781-00426-01 A0SN: NNNNNNNNSN: NNNNNNNN

xivCisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05PrefaceObtaining Documentation, Obtaining Support, and Security GuidelinesObtaining Documentation, Obtaining Support, and Security GuidelinesFor 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

CHAPTER 1-1Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-051OverviewThe Cisco Aironet 1240AG Series Access Point is available in autonomous and lightweight configurations. The autonomous access points can support standalone network configurations with all configuration settings maintained within the access points. The lightweight access points operate in conjunction with a Cisco wireless LAN controller with all configuration information maintained within the controller.Product TerminologyThe following terms refer to the autonomous and lightweight products:•The term access point describes both autonomous and lightweight products. •The term autonomous access point describes only the autonomous product. •The term lightweight access point describs only the lightweight product.•The term access point describes a product operating as an access point.•The term bridge describes a product operating as a bridge.Autonomous Access PointsCisco Aironet 1240AG Series Access Point (AIR-AP1242AG or AIR-AP1242G) provides a secure, affordable, and easy-to-use wireless LAN solution that combines mobility and flexibility with the enterprise-class features required by networking professionals. With a management system based on Cisco IOS software, the 1240AG series is a Wi-Fi certified, wireless LAN transceiver. The autonomous 1242AG access point contains two integrated radios: a 2.4-GHz radio (IEEE 802.11g) and a 5-GHz radio (IEEE 801.11a). The autonomous 1242G access point contains a single integrated radio: a 2.4-GHz radio (IEEE 802.11g).The access point serves as the connection point between wireless and wired networks or as the center point of a stand-alone wireless network. In large installations, wireless users within radio range of an access point can roam throughout a facility while maintaining seamless, uninterrupted access to the network.You can configure and monitor the access point using the command-line interface (CLI), the browser-based management system, or Simple Network Management Protocol (SNMP).

1-2Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewGuidelines for Using Cisco Aironet Lightweight Access PointsLightweight Access PointsThe Cisco Aironet 1240AG Series Access Point (AIR-LAP1242AG or AIR-LAP1242G) combines mobility and flexibility with the enterprise-class features required by networking professionals.These lightweight access points are part of the Cisco Integrated Wireless Network Solution and require no manual configuration before they are mounted. The lightweight access point is automatically configured by a Cisco wireless LAN controller (hereafter called a controller) using the Lightweight Access Point Protocol (LWAPP). The lightweight 1242AG access point contains two integrated radios: a 2.4-GHz radio (IEEE 802.11g) and a 5-GHz radio (IEEE 801.11a). The lightweight 1242G access point contains a single integrated radio: a 2.4-GHz radio (IEEE 802.11g). Using a controller, you can configure the radio settings.In the Cisco Centralized Wireless LAN architecture, access points operate in the lightweight mode (as opposed to autonomous mode). The lightweight access points associate to a controller. The controller manages the configuration, firmware, and control transactions such as 802.1x authentication. In addition, all wireless traffic is tunneled through the controller.LWAPP is an Internet Engineering Task Force (IETF) draft protocol that defines the control messaging for setup and path authentication and run-time operations. LWAPP also defines the tunneling mechanism for data traffic.In an LWAPP environment, a lightweight access point discovers a controller by using LWAPP discovery mechanisms and then sends it an LWAPP join request. The controller sends the lightweight access point an LWAPP join response allowing the access point to join the controller. When the access point is joined, the access point downloads its software if the versions on the access point and controller do not match. After an access point joins a controller, you can reassign it to any controller on your network.LWAPP secures the control communication between the lightweight access point and controller by means of a secure key distribution, utilizing X.509 certificates on both the access point and controller.This chapter provides information on the following topics:•Guidelines for Using Cisco Aironet Lightweight Access Points, page 1-2•Hardware Features, page 1-3•Network Examples with Autonomous Access Points, page 1-8Guidelines for Using Cisco Aironet Lightweight Access PointsYou should keep these guidelines in mind when you use a lightweight access point:•Lightweight access points can only communicate with Cisco 2006 series wireless LAN controllers or 4400 series controllers. Cisco 4100 series, Airespace 4012 series, and Airespace 4024 series controllers are not supported because they lack the memory required to support access points running Cisco IOS software. •Lightweight access points do not support Wireless Domain Services (WDS) and cannot communicate with WDS devices. However, the controller provides functionality equivalent to WDS when the access point associates to it.•Lightweight access points support eight BSSIDs per radio and a total of eight wireless LANs per access point. When a lightweight access point associates to a controller, only wireless LANs with IDs 1 through 8 are pushed to the access point.•Lightweight access points do not support Layer 2 LWAPP. They must get an IP address and discover the controller using DHCP, DNS, or IP subnet broadcast.

1-3Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewHardware Features•The lightweight access point console port is enabled for monitoring and debug purposes (all configuration commands are disabled when the access point is associated to a controller). Hardware FeaturesKey hardware features of the access point include:•Dual-radio operation (see page 1-5)•Ethernet port (see page 1-5)•Console port (see page 1-5)•LEDs, (see page 1-6)•Multiple power sources (see page 1-6)•UL 2043 certification (see page 1-7)•Anti-theft features (see page 1-7) Refer to Appendix C, “Access Point Specifications,” for a list of access point specifications.Figure 1-1 shows the access point with antennas.Figure 1-1 Access Point with Antennas135434STATUSRADIOETHERNETMODECONSOLE ETHERNET 48VDC2.4 GHz RIGHT / PRIMARY 2.4 GHz LEFT

1-4Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewHardware FeaturesFigure 1-2 illustrates the 2.4-GHz connector end of the access point.Figure 1-2 Access Point 2.4 GHz Connector EndFigure 1-3 illustrates the 5-GHz connector end of the access point.Figure 1-3 Access Point 5-GHz Connector End12.4-GHz antenna connector (left) 6Console port (RJ-45)2Ethernet LED 7Ethernet port (RJ-45)3Radio LED 848-VDC power port4Status LED 92.4-GHz antenna connector (right/primary)5Mode buttonSTATUSRADIOETHERNETMODECONSOLE ETHERNET 48VDC2.4 GHz RIGHT/PRIMARY 2.4 GHz LEFT1354356 7 8 91 543215-GHz antenna connector (left) 3Security key slot25-GHz antenna connector (right/primary)LEFT5 GHz ANTENNA w/RP-TNC1354361RIGHT / PRIMARY23

1-5Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewHardware FeaturesSingle or Dual-Radio OperationThe 1242AG access point supports simultaneous radio operation using a 2.4-GHz 802.11g radio and a 5-GHz 802.11a radio. The 1242G access point supports a single 2.4-GHz 802.11g radio. Each radio uses dual-diversity integrated antennas.The 5-GHz radio incorporates an Unlicensed National Information Infrastructure (UNII) radio transceiver operating in the UNII 5-GHz frequency bands. The 802.11g radio is called Radio0 and the 802.11a radio is called Radio1.Antennas SupportedTable 1-1 lists the supported access point antennas.Ethernet PortThe auto-sensing Ethernet port (see Figure 1-2) accepts an RJ-45 connector, linking the access point to your 10BASE-T or 100BASE-T Ethernet LAN. The access point can receive power through the Ethernet cable from a power injector, switch, or power patch panel. The Ethernet MAC address is printed on the label on the back of the access point (refer to the “Locating the Product Serial Number” section on page xiii). Console PortThe serial console port can be used to monitor the access point power-up sequences using a terminal emulator program. The port is located on the end of the unit (see Figure 1-2). Use an RJ-45 to DB-9 serial cable to connect your computer’s COM port to the access point’s serial console port. (Refer to Appendix E, “Console Cable Pinouts,” for a description of the console port pinouts.) Assign the following port settings to a terminal emulator to open the management system pages: 9600 baud, 8 data bits, No parity, 1 stop bit, and no flow control.Note After completing your configuration changes, you must remove the serial cable from the access point.Table 1-1 Supported Antennas2.4-GHz AntennasGain (dBi) 5-GHz AntennasGain (dBi)Diversity ceiling omnidirectional 2 Articulated omnidirectional 3.5Articulated dipole 2.2 Diversity omnidirectional 4.5Ceiling omnidirectional 5.2 Omnidirectional 6Wall patch directional 6 Diversity patch directional 7Mast mount omnidirectional 5.2 Patch directional 9.5Diversity pillar omnidirectional 5.2Diversity patch directional 6.5Patch directional 9Yagi directional 10

1-6Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewHardware FeaturesLEDsThe access point has three LEDs to indicate Ethernet activity, radio activity, and status indications (refer to the “Checking the Lightweight Access Point LEDs” section on page 3-2 or the “Checking the Lightweight Access Point LEDs” section on page 4-3 for additional information). Figure 1-2 shows the location of the LEDs.•The Status LED provides general operating status and error indications.•The Ethernet LED signals Ethernet traffic on the wired Ethernet LAN and provides Ethernet error indications. •The Radio LED signals that wireless packets are being transmitted or received over the radio interface and provides radio error indications. Power SourcesThe access point can receive power from an external power module or from inline power using the Ethernet cable. The access point supports the IEEE 802.3af inline power standard and Cisco CDP Power Negotiation. Using inline power, you do not need to run a power cord to the access point because power is supplied over the Ethernet cable. WarningThis product must be connected to a Power over Ethernet (PoE) IEEE 802.3af compliant power source or an IEC60950 compliant limited power source. Statement 353Caution Be careful when handling the access point; the bottom plate might be hot.The access point supports the following power sources:•Power module•Inline power:–Cisco Aironet Power Injector (AIR-PWRINJ3 or AIR-PWRINJ-FIB)–An inline power capable switch, such as the Cisco Catalyst 3550 PWR XL, 3560-48PS, 3570-48PS, 4500 with 802.3AF PoE module, or the 6500 with 802.3AF PoE module–Other inline power switches supporting the IEEE 802.3af inline power standardNote Some switches and patch panels might not provide enough power to operate the access point with both 2.4-GHz and 5-GHz radios. At power-up, if the access point is unable to determine that the power source can supply sufficient power, the access point automatically deactivates both radios to prevent an over-current condition. The access point also activates a Status LED low power error indication and creates an error log entry (refer to the “Checking the Lightweight Access Point LEDs” section on page 3-2 and the “Checking Basic Settings” section on page 3-3).

1-7Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewHardware FeaturesUL 2043 CertificationThe access point has adequate fire resistance and low smoke-producing characteristics suitable for operation in a building's environmental air space, such as above suspended ceilings, in accordance with Section 300-22(c) of the NEC, and with Sections 2-128, 12-010(3) and 12-100 of the Canadian Electrical Code, Part 1, C22.1.Caution Only the fiber-optic power injector (AIR-PWRINJ-FIB) has been tested to UL 2043 for operation in a building’s environmental air space; the AIR-PWRINJ3 power injector and the power module are not tested to UL 2043 and should not be placed in a building’s environmental air space, such as above suspended ceilings.Anti-Theft FeaturesThere are three methods of securing the access point:•Security cable keyhole—You can use the security cable slot (see Figure 1-3) to secure the access point using a standard security cable, like those used on laptop computers (refer to the “Using a Security Cable” section on page 2-17).•Security hasp—When you mount the access point on a wall or ceiling using the mounting plate and the security hasp, you can lock the access point to the plate with a padlock (see Figure 1-4). Compatible padlocks are Master Lock models 120T and 121T or equivalent.Figure 1-4 Access Point with Security Hasp and Padlock1Security hasp 2Security padlock1354422.4 GHz RIGHT / PRIMARY 2.4 GHz LEFT12

1-8Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewNetwork Examples with Autonomous Access Points•Cable security bracket—The cable security bracket (see Figure 1-5) attaches to the mounting plate and covers the console port, Ethernet port, power port, and the mode button to prevent the installation or removal of the cables or the activation of the mode button. The cable security bracket is user removable prior to attaching the mounting plate to a ceiling or wall.Figure 1-5 Access Point with Mounting Plate and Cable Security Bracket Network Examples with Autonomous Access PointsThis section describes the autonomous access point’s role in three common wireless network configurations. The autonomous access point’s default configuration is as a root unit connected to a wired LAN or as the central unit in an all-wireless network. The autonomous 1240AG series access point supports these operating wireless modes:•Root access point—Connected to a wired LAN and supports wireless clients.•Repeater access point—Not connected to a wired LAN, associates to a root access point, and supports wireless clients•Workgroup bridge—Not connected to a wired LAN, associates to a root access point or bridge, and supports wired network devices.•Root bridge—Connected to a wired LAN and supports non-root bridges and wireless clients.•Non-root bridge —Not connected to a wired LAN, associates to a root bridge, supports wireless clients, and supports wired clients.1Mounting plate 3Access point2Cable security bracket1354962.4 GHz RIGHT / PRIMARY 2.4 GHz LEFTSTATUSRADIOETHERNETETHERNET 48VDC321

1-9Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewNetwork Examples with Autonomous Access PointsRoot Access Point on a Wired LANAn autonomous access point connected directly to a wired LAN provides a connection point for wireless users. If more than one autonomous access point is connected to the LAN, users can roam from one area of a facility to another without losing their connection to the network. As users move out of range of one access point, they automatically connect to the network (associate) through another access point. The roaming process is seamless and transparent to the user. Figure 1-6 shows access points acting as root units on a wired LAN.Figure 1-6 Access Points as Root Units on a Wired LANAccess pointAccess point135445

1-10Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewNetwork Examples with Autonomous Access PointsRepeater Unit that Extends Wireless RangeAn autonomous access point can be configured as a stand-alone repeater to extend the range of your infrastructure or to overcome an obstacle that blocks radio communication. The repeater forwards traffic between wireless users and the wired LAN by sending packets to either another repeater or to an access point connected to the wired LAN. The data is sent through the route that provides the best performance for the client. Figure 1-7 shows an autonomous access point acting as a repeater. Consult the Cisco IOS Software Configuration Guide for Cisco Aironet Access Points for instructions on setting up an access point as a repeater.Note Non-Cisco client devices might have difficulty communicating with repeater access points.Figure 1-7 Access Point as RepeaterAccess point Repeater135444

1-11Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewNetwork Examples with Autonomous Access PointsCentral Unit in an All-Wireless NetworkIn an all-wireless network, an autonomous access point acts as a stand-alone root unit. The autonomous access point is not attached to a wired LAN; it functions as a hub linking all stations together. The access point serves as the focal point for communications, increasing the communication range of wireless users. Figure 1-8 shows an autonomous access point in an all-wireless network.Figure 1-8 Access Point as Central Unit in All-Wireless NetworkBridge Network with Wireless ClientsThe access point supports root bridge and non-root bridge roles used to interconnect a remote LAN to the main LAN (see Figure 1-9). The bridge units can also support wireless clients.Figure 1-9 Root Bridge and Non-root Bridge with Clients Access point135443Root bridge Non-root bridge135446

1-12Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewNetwork Examples with Autonomous Access PointsPoint-to-Point Bridge ConfigurationIn a point-to-point bridge configuration, two bridges interconnect two LAN networks using a wireless communication link (see Figure 1-10). The bridge connected to the main LAN network is classified as a root bridge and the other bridge is classified as a non-root bridge.Figure 1-10 Point-to-Point Bridge ConfigurationWorkgroup Bridge NetworkThe access point supports a workgroup bridge role to interconnect remote Ethernet workstations to the main LAN. The workgroup bridge can communicate with an access point (see Figure 1-11) or with a bridge (see Figure 1-12).Figure 1-11 Workgroup Bridge Communicating with an Access Point Figure 1-12 Workgroup Bridge Communicating with a Bridge 117029Root bridge Non-root bridgeAccess point Workgroup bridge135448Bridge Workgroupbridge135499

1-13Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewNetwork Example with Lightweight Access PointsNetwork Example with Lightweight Access PointsThe lightweight access points support Layer 3 network operation. Lightweight access points and controllers in Layer 3 configurations use IP addresses and UDP packets, which can be routed through large networks. Layer 3 operation is scalable and recommended by Cisco.This section illustrates a typical wireless network configuration containing lightweight access points and a Cisco Wireless LAN Controller (see Figure 1-13).Figure 1-13 Typical Lightweight Access Point Network Configuration Example158085LWAPPLWAPP

1-14Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 1 OverviewNetwork Example with Lightweight Access Points

CHAPTER 2-1Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-052Installing the Access PointThis chapter describes the installation of the access point and includes these sections:•Safety Information, page 2-2•Warnings, page 2-2•Unpacking the Access Point, page 2-3•Basic Installation Guidelines, page 2-4•Controller Discovery Process for Lightweight Access Points, page 2-4•Mounting Overview, page 2-7•Mounting on a Horizontal or Vertical Surface, page 2-9•Mounting Below a Suspended Ceiling, page 2-10•Mounting Above a Suspended Ceiling, page 2-11•Mounting Access Point on a Desktop or Shelf, page 2-14•Cable Security Bracket, page 2-14•Attaching the Access Point to the Mounting Plate, page 2-16•Securing the Access Point, page 2-17•Connecting the Ethernet and Power Cables, page 2-20•Powering Up the Access Point, page 2-22

2-2Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointSafety InformationSafety InformationFollow the guidelines in this section to ensure proper operation and safe use of the access point.FCC Safety Compliance StatementThe FCC with its action in ET Docket 96-8 has adopted a safety standard for human exposure to radio frequency (RF) electromagnetic energy emitted by FCC certified equipment. When used with approved Cisco Aironet antennas, Cisco Aironet products meet the uncontrolled environmental limits found in OET-65 and ANSI C95.1, 1991. Proper installation of this radio according to the instructions found in this manual will result in user exposure that is substantially below the FCC recommended limits.General Safety GuidelinesDo not hold any component containing a radio so that the antenna is very close to or touching any exposed parts of the body, especially the face or eyes, while transmitting.WarningsTranslated versions of the following safety warnings are provided in Appendix A, “Translated Safety Warnings.”WarningThis warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement 1071SAVE THESE INSTRUCTIONSWarningRead the installation instructions before you connect the system to its power source. Statement 1004WarningThis product must be connected to a power-over-ethernet (PoE) IEEE 802.3af compliant power source or an IEC60950 compliant limited power source. Statement 353WarningThis product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than: 20A Statement 1005WarningDo 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. Statement 245B

2-3Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointUnpacking the Access PointWarningIn order to comply with FCC radio frequency (RF) exposure limits, antennas should be located at a minimum of 7.9 inches (20 cm) or more from the body of all persons. Statement 332Unpacking the Access PointFollow these steps to unpack the access point:Step 1 Open the shipping container and carefully remove the contents. Step 2 Return all packing materials to the shipping container and save it.Step 3 Ensure that all items listed in the “Package Contents” section are included in the shipment. Check each item for damage. If any item is damaged or missing, notify your authorized Cisco sales representative. Package ContentsEach access point package contains the following items:•Cisco Aironet 1240AG Series Access Point or Cisco Aironet 1240AG Series Lightweight Access Point•Cisco Aironet 1240AG Series Power Module (universal power module)–optional•Mounting hardware kit –One mounting plate with cable security bracket–Two suspended ceiling T-rail clips, spacers (accommodates standard and recessed T-rails), and nuts.–One security hasp–Two 6 x 32 x 1/2 in. pan head Phillips machine screws–Four 8 x 18 x 3/4 in. pan head Phillips sheet metal screws–Four #8 plastic wall anchors–One 10 x 24 nut (for ground stud on mounting bracket) –Four rubber foot pads–Two cable tie wraps•Product quick start guide•Product translated safety warnings document•Cisco product registration and Cisco documentation feedback cards

2-4Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointBasic Installation GuidelinesBasic Installation GuidelinesBecause the access point is a radio device, it is susceptible to interference that can reduce throughput and range. Follow these basic guidelines to ensure the best possible performance:•Ensure that a site survey has been performed to determine the optimum placement of access points.•For lightweight access points, check the latest release notes to ensure that your controller software version supports the access points to be installed. You can find the controller release notes by selecting your controller under Wireless LAN Controllers at this URL:http://www.cisco.com/en/US/products/hw/wireless/tsd_products_support_category_home.html•Ensure that access points are not mounted closer than 20 cm (7.9 in) from the body of all persons.•Do not mount the access point within 3 feet of metal obstructions. •Install the access point away from microwave ovens. Microwave ovens operate on the same frequency as the access point and can cause signal interference.•Do not mount the access point outside of buildings.•Do not mount the access points on building perimeter walls unless outside coverage is desired.Controller Discovery Process for Lightweight Access PointsThe lightweight access point supports these controller discovery processes:•DHCP server discovery—Uses DHCP Option 43 to provide controller IP addresses to the access points. Cisco switches support a DHCP server option. For additional information, refer to the “Configuring DHCP Option 43 for Lightweight Access Points” section on page G-1.•DNS server discovery—The access point uses the name CISCO-LWAPP-CONTROLLER.<local domain> to discover the controller IP addresses from a DNS server. Where <local domain> is the access point domain name.•Locally stored controller IP addresses—If the access point was previously associated to a controller, the IP addresses of the primary, secondary, and tertiary controllers are stored in the access point non-volatile memory. The process of storing controller IP addresses in access points for later deployment is called priming the access point. For additional information, refer to the “Priming Lightweight Access Points Prior to Deployment” section on page F-1.You can also manually configure controller information using CLI commands on new (out-of-the-box) access points that are not connected to a controller. For additional information refer to the “Manually Configuring Controller Information Using the Access Point CLI” section on page 4-7.Cisco recommends that you configure a DHCP server with Option 43 to provide the controller IP addresses to your access points. Cisco switches provide a DHCP server option that is typically used for this purpose.

2-5Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointDeploying the Access Points on the Wireless NetworkDeploying the Access Points on the Wireless NetworkPrior to beginning the actual access point deployment, perform these tasks:•Ensure that a site survey has been preformed.•Ensure that your network infrastructure devices are operational and properly configured.•For lightweight access points, perform these tasks:–Ensure that your controllers are connected to switch trunk ports.–Ensure that your switch is configured with untagged access ports for connecting your access points.–Ensure that a DHCP server with Option 43 configured is reachable by your access points.To deploy your access points, follow these steps:Step 1 Obtain the access point location map created during your building site survey.Step 2 Review the access point locations and identify the specific mounting methods required for each access point location. Step 3 For each access point perform these steps:a. For lightweight access points, record the access point MAC address on the access point location map. When you have completed the access point deployment, return the access point MAC addresses and the access point locations on the access point location maps or floor plans to your network planner or manager. The network operators can use the MAC address and location information to create maps for precise wireless system management.b. Attach your access point to the mounting plate (see the “Attaching the Access Point to the Mounting Plate” section on page 2-16).c. Mount the access point at the indicated destination using the specified mounting method. For specific mounting instructions, see these sections:–Horizontal or vertical surface, such as a ceiling or wall (see the “Mounting on a Horizontal or Vertical Surface” section on page 2-9).–Below a suspended ceiling (see the “Mounting Below a Suspended Ceiling” section on page 2-10).–Above a suspended ceiling (see the “Mounting Above a Suspended Ceiling” section on page 2-11).–On a desktop or shelf (see the “Mounting Access Point on a Desktop or Shelf” section on page 2-14.d. Optionally secure the access point using a padlock or security cable (see the “Securing the Access Point” section on page 2-17).e. Connect the access point cables (Ethernet, optional power, optional antennas). For instructions see the “Connecting the Ethernet and Power Cables” section on page 2-20.f. On power up, verify that the access point is associated to a controller and operating normally. For additional information, refer to the “Checking the Lightweight Access Point LEDs” section on page 3-2 or the “Checking the Lightweight Access Point LEDs” section on page 4-3.

2-6Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointDeploying the Access Points on the Wireless NetworkStep 4 For lightweight access points, after your access points are deployed, ensure that your controller is not configured as a master controller. A master controller should only be used for configuring access points and not in a working network. Access Point Layout and ConnectorsFigure 2-1 illustrates the 2.4-GHz connector end of the access point.Figure 2-1 Access Point 2.4-GHz Connector EndFigure 2-2 illustrates the 5-GHz connector end of the access point.Figure 2-2 Access Point 5-GHz Connector End12.4-GHz antenna connector (left) 6Console port (RJ-45)2Ethernet LED 7Ethernet port (RJ-45)3Radio LED 848-VDC power port4Status LED 92.4-GHz antenna connector (right/primary)5MODE buttonSTATUSRADIOETHERNETMODECONSOLE ETHERNET 48VDC2.4 GHz RIGHT/PRIMARY 2.4 GHz LEFT1354356 7 8 91 543215-GHz antenna connector (left) 3Security key slot )25-GHz antenna connector (right/primaryLEFT5 GHz ANTENNA w/RP-TNC1354361RIGHT / PRIMARY23

2-7Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointMounting OverviewMounting OverviewYou can mount the access point on any of the following surfaces:•Horizontal or vertical flat surfaces, such as walls or ceilings•Suspended ceilings (above and below)Caution The access point, the antennas, and the power source (power injector or power module) are not designed for outdoor use and must be located in an indoor environment.The access point ships with a detachable mounting plate and the necessary mounting hardware. Because it is detachable, you can use the mounting plate as a template to mark the positions of the mounting holes for your installation. You then install the mounting plate and attach the access point when you are ready. Refer to Figure 2-3 to locate the various mounting holes for the method you intend to use.Figure 2-3 Mounting PlateCaution Only the fiber-optic power injector (AIR-PWRINJ-FIB) has been tested to UL 2043 for operation in a building’s environmental air space; no other power injectors or power modules have been tested to UL 2043 and they should not be placed in a building’s environmental air space, such as above suspended ceilings. 1Key hole clips 4Ceiling or wall mounting holes2Cable access openings 5Ground connection3Locking detent 6Cable tie point

2-8Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointMounting OverviewNote The access point provides adequate fire resistance and low smoke-producing characteristics suitable for operation in a building's environmental air space (such as above suspended ceilings) in accordance with Section 300-22(C) of the National Electrical Code (NEC).Note When mounting the access point in a building’s environmental air space, you must use Ethernet cable suitable for operation in environmental air space in accordance with Section 300-22(C) of the National Electrical Code (NEC).A mounting hardware kit is provided that contains the hardware and fasteners necessary to mount the access point. Refer to the Table 2-1 to identify the materials you need to mount your access point, then go to the section containing the specific mounting procedure.Table 2-1 Material Needed to Mount Access PointMounting Method Materials Required In KitHorizontal or vertical surface Four #8 x 1 in. (25.4 mm) screwsFour wall anchors3/16 in. (4.7 mm) or 3/32 in. (2.3 mm) drill bitDrillStandard screwdriverYesYesNoNoNoSuspended ceiling Two T-rail clips with studsTwo plastic spacersTwo 1/4–20 Keps nuts with built-in washersStandard screwdriver, wrench, or pliersYesYesYesNo

2-9Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointMounting on a Horizontal or Vertical SurfaceMounting on a Horizontal or Vertical SurfaceFollow these steps to mount the access point on a horizontal or vertical surface.Step 1 Use the mounting plate as a template to mark the locations of the four mounting holes.Note When mounting on a vertical surface, position the cable security bracket on the bottom.Step 2 Drill one of the following sized holes at the locations you marked:•3/16 in. (4.7 mm) if you are using wall anchors•1/8 in. (6.3 mm) if you are not using wall anchorsStep 3 Install the anchors into the wall if you are using them. Otherwise, go to Step 4.Step 4 Secure the mounting plate to the surface using the #8 fasteners.Note On a vertical surface, mount the plate with the security hasp slot on the top.Step 5 Attach the access point to the mounting plate.Note For a more secure installation you should attach the mounting plate to a stud or major structural member and use the appropriate fasteners.

2-10Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointMounting Below a Suspended CeilingMounting Below a Suspended CeilingNote To comply with NEC code, a #10-24 grounding lug is provided on the mounting plate.You should review Figure 2-4 before beginning the mounting process.Figure 2-4 T-Rail Mounting Parts 1Suspended ceiling T-rail 4mounting plate2T-rail clips 5Keps nut (contains an attached lock washer)3Plastic spacer (used with recessed ceiling tiles)

2-11Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointMounting Above a Suspended CeilingFollow these steps to mount your access point on a suspended ceiling:Step 1 Decide where you want to mount the access point.Step 2 Attach two T-rail clips to the suspended ceiling T-rail.Step 3 Use the mounting plate to adjust the distance between the T-rail clips so that they align with the holes in the mounting plate.Step 4 Use a standard screwdriver to tighten the T-rail clip studs in place on the suspended ceiling T-rail. Do not overtighten.Step 5 If using recessed ceiling tiles, install a plastic spacer on each T-rail clip stud. The spacer’s legs should contact the suspended ceiling T-rail.Step 6 Attach the mounting plate to the T-rail clip studs and start a Keps nut on each stud.Step 7 Use a wrench or pliers to tighten the Keps nuts. Do not overtighten.Step 8 To attach the access point to the mounting plate, see the “Attaching the Access Point to the Mounting Plate” section on page 2-16.Step 9 If you need additional security, refer to the “Securing the Access Point” section on page 2-17 for additional information.Step 10 Verify the access point is operating (see the “Powering Up the Access Point” section on page 2-22).Mounting Above a Suspended CeilingThe access point mounting plate is designed to be integrated into the T-bar grid above the tiles of a suspended ceiling. Using a T-bar box hanger and bracket mounting clip (not supplied) such as the Erico 512A and BHC, you orient the access point antenna just above the top surface of a standard ceiling tile. You may need to modify a thicker tile to allow room for the antenna.

2-12Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointMounting Above a Suspended CeilingIt may be helpful to refer to Figure 2-5 before proceeding.Figure 2-5 Above Suspended Ceiling Parts Caution Only the fiber-optic power injector (AIR-PWRINJ-FIB) has been tested to UL 2043 for operation in a building’s environmental air space; no other power injectors or power modules have been tested to UL 2043 and they should not be placed in a building’s environmental air space, such as above suspended ceilings. 1Suspended ceiling T-rail 4T-bar box hanger2T-rail clip 5Bracket mounting clip3Height adjustment screw135583STATUSRADIOETHERNETMODECONSOLEETHERNET48VDC2.4 GHz RIGHT / PRIMARY 2.4 GHz LEFT45331221

2-13Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointMounting Above a Suspended CeilingThe bracket mounting clip requires the use of two mounting clip holes on the mounting plate (see Figure 2-6). Figure 2-6 Mounting Plate Holes Follow these steps to mount the access point above a suspended ceiling.Step 1 Insert the bracket mounting clip’s tab into the large hole on the access point mounting plate.Step 2 Place the clip over the T-bar box hanger and secure it to the access point mounting plate (see Figure 2-7) with the 1/4-20 fastener (supplied with the T-bar hanger). Figure 2-7 Access Point Mounting Plate Note The illustration shows the access point mounting plate mounted perpendicular to the T-bar box hanger. You can also mount the bracket parallel to the T-bar box hanger.1Bracket mounting clip holes135498

2-14Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointMounting Access Point on a Desktop or ShelfStep 3 Determine the location in the ceiling where you will mount the access point and remove an adjacent ceiling tile.Step 4 Orient the access point 2-GHz and 5-GHz antennas so that they are pointing down when mounted on the T-bar Box hanger. Step 5 Adjust the height of the T-bar box hanger to provide antenna clearance above the ceiling tile using the height adjusting screws (refer to Figure 2-5).Step 6 Attach the T-rail clips on each end of the T-bar box hanger to the ceiling grid T-rails. Make sure the clips are securely attached to the T-rails.Step 7 Connect a drop wire to a building structural element and through the hole provided in the bracket mounting clip. This additional support is required in order to comply with the U.S. National Electrical Safety Code.Step 8 To attach the access point to the mounting plate, see the “Attaching the Access Point to the Mounting Plate” section on page 2-16.Step 9 If you need additional security, see the “Securing the Access Point” section on page 2-17 for additional information.Step 10 Verify the access point is operating before replacing the ceiling tile (see the “Powering Up the Access Point” section on page 2-22).Mounting Access Point on a Desktop or ShelfWhen placing the access point on a desktop of shelf, the use of the mounting plate is optional. The mounting plate can be used to shield the user from the hot bottom surface of the access point when movement of the access point may be necessary. The access point is shipped with four rubber pads that you can place on the bottom of the access point or the mounting plate to help prevent sliding or scratching the surface of your desktop or shelf. For information on connecting the access point cables, see the “Connecting the Ethernet and Power Cables” section on page 2-20. Cable Security BracketThe access point mounting plate has an attached cable security bracket that covers the console port, Ethernet port, power port, and the mode button to prevent the installation or removal of the cables or the activation of the mode button. If desired, the cable security bracket can be removed prior to attaching the mounting plate to a ceiling or wall.

2-15Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointCable Security BracketFigure 2-8 Access Point with Mounting Plate and Cable Security Bracket Removing the Cable Security BracketThe cable security bracket (see Figure 2-9) is designed to help prevent someone from using the Mode button to reset the access point to default values or from using the serial console cable to access the access point’s CLI interface or from removing the Ethernet cable. If this security protection is not considered necessary, you can remove the cable security bracket.Figure 2-9 Cable Security Bracket Screws1Mounting plate 3Access point2Cable security bracket1354962.4 GHz RIGHT / PRIMARY 2.4 GHz LEFTSTATUSRADIOETHERNETETHERNET 48VDC3211Cable security bracket 3Mounting plate2Cable security bracket screws

2-16Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointAttaching the Access Point to the Mounting PlateTo remove the cable security bracket from the mounting plate, follow these instructions:Step 1 Position the mounting plate with the cable security bracket pointing down (see Figure 2-9).Step 2 Remove the two screws that attach the bracket to the mounting plate using a phillips screw driver.Attaching the Access Point to the Mounting PlateFollow these steps to attach the access point to the mounting plate:Step 1 If your mounting plate has the cable security bracket, follow these steps:a. Connect the Ethernet cable to the access point Ethernet port (see the “Connecting the Ethernet and Power Cables” section on page 2-20).b. If not using on-line power, connect the power module’s power cable to the access point 48-VDC connector.c. Carefully feed the Ethernet and power cables through the cable notch on the cable security bracket and slide the cables to the right or left to secure the cables (see the “Cable Security Bracket” section on page 2-14).Note If your access point is connected to Ethernet in-line power, do not connect the local power module to the access point. Using two power sources on the access point might cause the access point to shut down to protect internal components and might cause the switch to shut down the port to which the access point is connected. If your access point shuts down, you must remove all power and reconnect only a single power source.Step 2 Line up the four keyhole clips on the mounting plate with the large ends of the keyhole-shaped holes on the access point.Note The keyhole clips on each side of the mounting plate are offset and can only be positioned in one direction onto the access point.Step 3 Insert the mounting plate clips into the keyhole shaped holes on the access point.Step 4 Slide the access point towards the cable security bracket end of the mounting bracket while exerting slight pressure to force the access point and mounting plate together. You will hear a slight click when the locking detents contact the access point and locks it into place.Step 5 Attach and adjust the antenna(s) or antenna cables to the access point antenna connectors.Note The 5-GHz antennas and antenna cables have a blue dot or blue label. Connect only antennas or antenna cables with blue dots or labels to the access point’s 5-GHz antenna connectors.

2-17Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointSecuring the Access PointStep 6 If your mounting plate does not have the cable security bracket, follow these steps:a. Connect a CAT 5 Ethernet cable to the access point Ethernet port (see the “Connecting the Ethernet and Power Cables” section on page 2-20).b. If using local power, insert the power module’s power cable into the access point’s 48-VDC power port.Note If your access point is connected to in-line power, do not connect the power module to the access point. Using two power sources on the access point might cause the access point to shut down to protect internal components and might cause the switch to shut down the port to which the access point is connected. If your access point shuts down, you must remove all power and reconnect only a single power source.Securing the Access PointThere are two ways to secure your access point:•Using a security cable•Securing the access point to the mounting plateUsing a Security CableYou can secure the access point by installing a standard security cable (such as the Kensington Notebook MicroSaver, model number 64068) into the access point security cable slot (see Figure 2-2). The security cable can be used with any of the mounting methods described in this guide. Follow these steps to install the security cable.Step 1 Loop the security cable around a nearby immovable object. Step 2 Insert the key into the security cable lock. Step 3 Insert the security cable latch into the security key slot on the access point. Step 4 Rotate the key right or left to secure the security cable lock to the access point. Step 5 Remove the key from security cable lock.

2-18Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointSecuring the Access PointSecuring the Access Point to the Mounting PlateThe security hasp enables you to use a padlock to secure the access point to the mounting plate. Known compatible padlocks are Master Lock models 120T or 121T.To install the security hasp, follow these steps:Step 1 Insert the security hasp’s key pin (see Figure 2-10) into the key slot on the access point (see Figure 2-2) and rotate counterclockwise towards the mounting plate.Figure 2-10 Security Hasp Step 2 Push the security hasp’s padlock flange through the mounting plate’s security slot.1Key pin 4Padlock2Security hasp 55-GHz access point end 3Mounting plate security slot 6Mounting plate 1354912.4 GHz RIGHT / PRIMARY 2.4 GHz LEFT231465

2-19Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointSecuring the Access PointStep 3 Place your padlock (user supplied) through the padlock hole in the security hasp’s padlock flange(see Figure 2-11).Figure 2-11 Security Hasp and PadlockStep 4 Push the padlock into the recessed opening between the access point and the mounting plate.Note When attaching the mounting plate to a vertical surface, place the security cable bracket end of the mounting plate on the bottom.1Security hasp 2Pad lock1354422.4 GHz RIGHT / PRIMARY 2.4 GHz LEFT12

2-20Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointConnecting the Ethernet and Power CablesConnecting the Ethernet and Power CablesThe access point receives power through the Ethernet cable or an external power module. Figure 2-12 shows the power options for the access point. Figure 2-12 Access Point Power Options WarningThis product must be connected to a Power over Ethernet (PoE) IEEE 802.3af compliant power source or an IEC60950 compliant limited power source. Statement 353Caution This product and all interconnected equipment must be installed indoors within the same building, including the associated LAN connections (as defined by Environment A of the IEEE 802.3af standard).The access point power options:•Option 1—Switches with sufficient inline power:–An inline power capable switch, such as the Cisco Catalyst 3550 PWR XL, 3560-48PS, 3750-48PS, 4500 with 802.3AF PoE module, or the 6500 with 802.3AF PoE module–Other inline power switches supporting the IEEE 802.3af inline power standard•Option 2—Switches without sufficient inline power can use the power injector:–Cisco Aironet Power Injector (AIR-PWRINJ3 or AIR-PWRINJ-FIB)•Option 3—Local power using the power module PowercordUniversalpower supplySYSTRPSDUPLXMODESPEEDUTILSTAT12345678910 11 12 13 14 15 16 17 18 19 20 21 22 23 24 23 2410Base-T / 100Base-TX 100Base-FXCatalyst 2950 SERIESSYST RPSDUPLXMODESPEEDUTILSTAT12345678910 11 12 13 14 15 16 17 18 19 20 21 22 23 24 23 2410Base-T / 100Base-TX 100Base-FXCatalyst 2950 SERIESTOAP/ BRIDGETONETWORKSwitch withinline powerPower injectorAccess PointSwitch withoutinline powerOption 1 Option 2Option 3135476

2-21Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointConnecting the Ethernet and Power CablesNote Some older switches and patch panels might not provide enough power to operate the access point. At power-up, if the access point is unable to determine that the power source can supply sufficient power, the access point automatically deactivates both radios to prevent an over-current condition. The access point Status LED turns amber and an error log entry is created (refer to the “Checking the Lightweight Access Point LEDs” section on page 3-2 or the “Checking the Lightweight Access Point LEDs” section on page 4-3).Connecting to an Ethernet Network with an Inline Power SourceCaution Be careful when handling the access point; the bottom plate might be hot.Note If your access point is connected to in-line power, do not connect the power module to the access point. Using two power sources on the access point might cause the access point to shut down to protect internal components and might cause the switch to shut down the port to which the access point is connected. If your access point shuts down, you must remove all power and reconnect only a single power source.Follow these steps to connect the access point to the Ethernet LAN when you have an inline power source:Step 1 Connect a Category 5 Ethernet cable to the RJ-45 Ethernet connector labeled Ethernet on the access point (see Figure 2-13).Figure 2-13 Ethernet and Power Ports Step 2 Connect the other end of the Ethernet cable to one of the following:•A switch with inline power (see the “Connecting the Ethernet and Power Cables” section on page 2-20).•The end of a Cisco Aironet power injector labeled To AP/Bridge. Connect the other end labeled To Network to your 10/100 Ethernet LAN.1Ethernet port 248 VDC power portSTATUSRADIOETHERNETMODECONSOLE ETHERNET 48VDC2.4 GHz RIGHT/PRIMARY 2.4 GHz LEFT1354941 2

2-22Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 2 Installing the Access PointPowering Up the Access PointConnecting to an Ethernet Network with Local PowerCaution Be careful when handling the access point; the bottom plate might be hot.Note If your access point is connected to in-line power, do not connect the power module to the access point. Using two power sources on the access point might cause the access point to shut down to protect internal components and might cause the switch to shut down the port to which the access point is connected. If your access point shuts down, you must remove all power and reconnect only a single power source.Follow these steps to connect the access point to an Ethernet LAN when you are using a local power source:Step 1 Connect a Category 5 Ethernet cable to the RJ-45 Ethernet connector labeled Ethernet on the access point (see Figure 2-13). Step 2 Connect the power module output connector to the access point’s 48-VDC power port (see Figure 2-13).Step 3 Plug the other end of the Ethernet cable into an unpowered Ethernet port on your LAN network.Step 4 Plug the other end of the power module into an approved 100- to 240-VAC outlet.For information on securing your access point, see the “Securing the Access Point” section on page 2-17.Powering Up the Access Point When power is applied to the access point, it begins a routine power-up sequence that you can monitor by observing the three LEDs on the end of the access point. After you observe all three LEDs turning green to indicate the starting of the operating system, the Status LED blinks green signifying that the access point is operational. After a successful power-up sequence, the Status LED turns light green to signify that there are no client devices associated, or it turns blue to signify that there are client devices associated. Refer to the “Checking the Lightweight Access Point LEDs” section on page 3-2 or the “Checking the Lightweight Access Point LEDs” section on page 4-3 for LED descriptions.Caution Be careful when handling the access point; the bottom plate might be hot.Note If your access point is connected to in-line power, do not connect the power module to the access point. Using two power sources on the access point might cause the access point to shut down to protect internal components and might cause the switch to shut down the port to which the access point is connected. If your access point shuts down, you must remove all power and reconnect only a single power source.

CHAPTER 3-1Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-053Troubleshooting 1240AG Series Autonomous Access PointsThis chapter provides troubleshooting procedures for basic problems with the 1240AG series autonomous access point (AIR-AP1242AG or AIR-AP1242G). For the most up-to-date, detailed troubleshooting information, refer to the Cisco Technical Support and Documentation website at the following URL:http://www.cisco.com/en/US/products/hw/wireless/tsd_products_support_category_home.htmlSections in this chapter include:•Checking the Lightweight Access Point LEDs, page 3-2•Checking Basic Settings, page 3-3•Low Power Condition, page 3-5•Running the Carrier Busy Test, page 3-13•Running the Ping Test, page 3-14•Resetting to the Default Configuration, page 3-14•Reloading the Access Point Image, page 3-16•Obtaining the Access Point Image File, page 3-19•Obtaining the TFTP Server Software, page 3-20

3-2Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 3 Troubleshooting 1240AG Series Autonomous Access PointsChecking the Lightweight Access Point LEDsChecking the Lightweight Access Point LEDsIf your access point is not working properly, check the Status, Ethernet, and Radio LEDs on the 2.4 GHz end of the unit. You can use the LED indications to quickly assess the unit’s status. Figure 3-1 shows the access point LEDs (for additional information refer to the Event Log using the access point browser interface). Figure 3-1 Access Point LEDs The LED signals are listed inTable 3-1.1Ethernet LED 3Status LED2Radio LED STATUSRADIOETHERNETMODECONSOLE ETHERNET 48VDC2.4 GHz RIGHT/PRIMARY 2.4 GHz LEFT135497321Table 3-1 LED SignalsMessage type Ethernet LED Radio LED Status LED MeaningBoot loader status Green Green Green DRAM memory test ok.Off Blinking green Blue-green Initialize Flash file system.Off Green Pink Flash memory test ok.Green Off Dark blue Ethernet test ok.Green Green Green Starting Cisco IOS.Association status — — Light green Normal operating condition, but no wireless client devices are associated with the unit. — — Blue Normal operating condition, at least one wireless client device is associated with the unit.Operating status Green — — Ethernet link is operational.Blinking green — — Transmitting or receiving Ethernet packets.— Blinking green — Transmitting or receiving radio packets.— — Blinkingdark blue Software upgrade in progress

3-3Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 3 Troubleshooting 1240AG Series Autonomous Access PointsChecking Basic SettingsChecking Basic SettingsMismatched basic settings are the most common causes of lost connectivity with wireless clients. If the access point does not communicate with client devices, check the following areas.Boot loader warnings Off Off Yellow Ethernet link not operational.Red Off Yellow Ethernet failure.Amber Off Yellow Configuration recovery in progress(Mode button pressed for 2 to 3 seconds).Off Red Pink Image recovery(Mode button pressed for 20 to 30 seconds)Blinking green Blinking red Blinking pink Image recovery in progress and Mode button is released.Boot loader errors Red Red Red DRAM memory test failure.Off Red Blinking red and blue Flash file system failure.Off Amber Blinking red and blue-greenEnvironment variable (ENVAR) failure.Amber Off Blinking red and yellow Bad MAC address.Red Off Blinking red and off Ethernet failure during image recovery.Amber Amber Blinking red and off Boot environment error.Red Amber Blinking red and off No Cisco IOS image file.Amber Amber Blinking red and off Boot failure.Cisco IOS errors Blinking amber — — Transmit or receive Ethernet errors. — Blinking amber — Maximum retries or buffer full occurred on the radio.Red Red Amber Software failure; try disconnecting and reconnecting unit power.— — Amber General warning, insufficient inline power (see the Low Power Condition section).Table 3-1 LED Signals (continued)Message type Ethernet LED Radio LED Status LED Meaning

3-4Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 3 Troubleshooting 1240AG Series Autonomous Access PointsChecking Basic SettingsDefault IP Address BehaviorWhen you connect a 1240 series access point running Cisco IOS Release 12.3(7)JA or later software with a default configuration to your LAN, the access point requests an IP address from your DHCP server and, if it does not receive an IP address, continues to send requests indefinitely.Enabling the Radio InterfacesIn Cisco IOS Release 12.3(7)JA or later, the access point radios are disabled by default, and there is no default SSID. You must create an SSID and enable the radios before the access point will allow wireless associations from other devices. These changes to the default configuration improve the security of newly installed access points. Refer to the Cisco IOS Software Configuration Guide for Cisco Aironet Access Points for instructions on configuring the SSID.To enable the radio interfaces, follow these instructions:Step 1 Use your web-browser to access your access point.Step 2 When the Summary Status page displays, click Network Interfaces > Radio0-802.11G and the radio status page displays.Step 3 Click Settings and the radio settings page displays.Step 4 Click Enable in the Enable Radio field.Step 5 Click Apply.Step 6 Click Radio1-802.11A and the radio status page displays.Step 7 Repeat Steps 3 to 5.Step 8 Close your web-browser.SSIDWireless clients attempting to associate with the access point must use the same SSID as the access point. If a client device’s SSID does not match the SSID of an access point in radio range, the client device will not associate. Note In Cisco IOS Release 12.3(7)JA or later, there is no default SSID. You must configure an SSID before client devices can associate to the access point.WEP KeysThe WEP key you use to transmit data must be set up exactly the same on your access point and any wireless devices with which it associates. For example, if you set WEP Key 3 on your client adapter to 0987654321 and select it as the transmit key, you must also set WEP Key 3 on the access point to exactly the same value. The access point does not need to use Key 3 as its transmit key, however.Refer to the Cisco IOS Software Configuration Guide for Cisco Aironet Access Points for instructions on setting the access point’s WEP keys.

3-5Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 3 Troubleshooting 1240AG Series Autonomous Access PointsLow Power ConditionSecurity SettingsWireless clients attempting to authenticate with your access point must support the same security options configured in the access point, such as EAP or LEAP, MAC address authentication, Message Integrity Check (MIC), WEP key hashing, and 802.1X protocol versions.If a wireless client is unable to authenticate with your access point, contact the system administrator for proper security settings in the client adapter and for the client adapter driver and firmware versions that are compatible with the access point settings.Note The access point MAC address that displays on the Status page in the Aironet Client Utility (ACU) is the MAC address for the access point radio. The MAC address for the access point Ethernet port is printed on the label on the back of the access point.Low Power ConditionWarningThis product must be connected to a Power over Ethernet (PoE) IEEE 802.3af compliant power source or an IEC60950 compliant limited power source. Statement 353The access point can be powered from the 48-VDC power module or from an in-line power source. The access point supports the IEEE 802.3af power standard, Cisco Pre-Standard PoE protocol, and Cisco Intelligent Power Management for in-line power sources. For full operation, the access point (powered device) requires 12.95 W (up to 15.4 W with 100 m CAT 5 Ethernet cable). When the access point is being used in a PoE configuration, the power drawn from the power sourcing equipment (PSE), such as a switch or power injector, is higher by an amount dependent on the length of the interconnecting cable.The power module and Cisco Aironet power injectors are capable of supplying the required power for full operation, but some inline power sources are not capable of supplying sufficient power. Also, some high-power inline power sources, might not be able to provide up to 15.4 W of power to all ports at the same time.Note An 802.3af compliant switch (Cisco or non-Cisco) is capable of supplying sufficient power for full operation.Note If your access point is connected to in-line power, do not connect the power module to the access point. Using two power sources on the access point might cause the access point to shut down to protect internal components and might cause the switch to shut down the port to which the access point is connected. If your access point shuts down, you must remove all power and reconnect only a single power source.On power up, the access point is placed into low power mode (both radios are disabled), Cisco IOS software loads and runs, and power negotiation determines if sufficient power is available. If there is sufficient power then the radios are turned on; otherwise, the access point remains in low power mode with the radios disabled to prevent a possible over-current condition. In low power mode, the access

3-6Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 3 Troubleshooting 1240AG Series Autonomous Access PointsLow Power Conditionpoint activates the Status LED low power error indication, displays a low power message on the browser and serial interfaces, and creates an event log entry (see the “Checking the Lightweight Access Point LEDs” section on page 3-2 and “Inline Power Status Messages” section on page 3-7).Intelligent Power ManagementThe access point requires 12.95 W of power (up to 15.4 W with 100 m CAT 5 Ethernet cable) for full power operation with both radios, but only needs 6.3 W of power when operating in low power mode with both radios disabled. To help avoid an over-current condition with low power sources and to optimize power usage on Cisco switches, Cisco developed Intelligent Power Management, which uses Cisco Discovery Protocol (CDP) to allow powered devices (such as your access point) to negotiate with a Cisco switch for sufficient power. The access point supports Intelligent Power Management and as a result of the power negotiations, the access point will either enter full power mode or remain in low power mode with the radios disabled. Note Independent of the power negotiations, the access point hardware also uses the 802.3af classification scheme to indicate the power required from the power source. However, the power source cannot report the power available to the access point unless the power source also supports Intelligent Power Management.Some Cisco switches that are capable of supplying sufficient power require a software upgrade to support Intelligent Power Management. If the software upgrade is not desired, you can configure the access point to operate in pre-standard compatibility mode and the access point automatically enters full power mode if these Cisco switches are detected in the received CDP ID field. When the access point determines that sufficient power is not available for full power operation, an error message is logged and the Status LED turns amber to indicate low power mode (see the “Checking the Lightweight Access Point LEDs” section on page 3-2 and the “Inline Power Status Messages” section on page 3-7).Tip If your switch is capable of supplying sufficient power for full operation but the access point remains in low-power mode, your access point or your switch (or both) might be misconfigured (see Table 3-2 and Table 3-3).If your inline power source is not able to supply sufficient power for full operation, you should consider these options:•Upgrade to a higher-powered switch •Use a Cisco Aironet power injector on the switch port•Use the 48-VDC power module to locally power the access point

3-7Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 3 Troubleshooting 1240AG Series Autonomous Access PointsLow Power ConditionInline Power Status MessagesThese messages are logged on the console port by the access point to report the power condition:•%CDP_PD-4-POWER_OK: Full Power - AC_ADAPTOR inline power source—This message indicates the access point is using the power module and can support full-power operation.•%CDP_PD-4-POWER_OK: Full Power - NEGOTIATED inline power source—This message indicates the access point is operating at full power and has successfully negotiated for 12.95 W of power from a Cisco switch supporting Cisco Intelligent Power Management.•%CDP_PD-4-POWER_OK: Full Power - HIGH_POWER_CLASSIC inline power source—This message indicates the access point is operating at full power because it has been configured for pre-standard compatibility mode and has detected a Cisco switch that does not support Intelligent Power Management but is able to supply sufficient power to the access point.•%CDP_PD-4-POWER_OK: Full Power - INJECTOR_CONFIGURED_ON_SOURCE inline power source—This message indicates the access point is operating at full power because it is connected to a Cisco switch that supports Intelligent Power Management and the switch has been configured with the power inline never command.•%CDP_PD-4-POWER_OK: Full power - INJECTOR_CONFIGURED_ON_CURRENT_PORT inline power source—This message indicates the access point is operating at full power because it has been configured to expect a power injector on this port. •%CDP_PD-4-POWER_OK: Full Power - INJECTOR_DETECTED_PD inline power source—This message indicates the access point is operating at full power because it has detected a CDP packet from another Cisco powerable device (PD). The access point power is being supplied from a power injector or a non-Cisco power source because a Cisco power source does not transmit this type of CDP packet.•%CDP_PD-4-POWER_OK: Full Power - INJECTOR_DETECTED_MULTIPLE_MACS_ON_HUB inline power source—This message indicates the access point is operating at full power because it has detected multiple Cisco devices. The access point power is being supplied from a power injector or a non-Cisco power source because a Cisco power source does not forward CDP packets. •%CDP_PD-4-POWER_OK: Full Power - NON_CISCO-NO_CDP_RECEIVED inline power source—This message indicates the access point is operating at full power because it has not received any CDP packets within the timeout period. This condition indicates your access point is connected to a non-Cisco power source.Note To prevent possible over-current conditions, the power source must be an IEEE 802.3af compliant power source or an IEC60950 compliant limited power source.•%CDP_PD-2-POWER_LOW: All radios disabled - NEGOTIATED inline power source—This message indicates the access point is in low power mode with all radios disabled because the Cisco power source has indicated it is not capable of supplying sufficient power to the access point.Note A Cisco power injector might be required.

3-8Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 3 Troubleshooting 1240AG Series Autonomous Access PointsLow Power Condition•%CDP_PD-2-POWER_LOW: All radios disabled - LOW_POWER_CLASSIC_NO_INJECTOR_CONFIGURED <platform name> (<MAC address>). —This message indicates the access point is in low power mode with all radios disabled and has detected a CDP device that is unable to supply sufficient power to the access point. The< platform name> indicates the CDP device detected by the access point. The <MAC address> indicates the MAC address of the CDP device, typically, the switch port.Note A Cisco power injector might be required. Following the low power status message, two extra messages are displayed on the console port or when using a Telnet session that identify the actions needed to resolve this low power problem:–Verify the required power injector is installed on this port: <platform name> (<Ethernet port>).(where <platform name> indicates the CDP device detected by the access point and <Ethernet port> indicates the Ethernet port of the CDP device.–If a power injector is installed, issue the command: power inline negotiation injector installed.•%CDP_PD-2-POWER_LOW: All radios disabled- LOW_POWER_CLASSIC_INJECTOR_CONFIGURED_ON_ANOTHER_PORT <platform name> (<MAC address>)—This message indicates the access point is in low power mode with all radios disabled and has detected a CDP device that is unable to supply sufficient power to the access point. A power injector has been configured, but it is for another port. It is likely that the access point has been relocated and has not been reconfigured for a new power injector.The <platorm name> indicates the CDP device detected by the access point. The <MAC address> indicates the MAC address of the CDP device, typically, the switch port.Note A Cisco power injector might be required.Following the low power status message, two extra messages are displayed when using the console port or a Telnet session that identify the actions needed to resolve this low power problem:1. Verify the required power injector is installed on the new port: <platform name> (<Ethernet port>).(where <platform name> indicates the CDP device detected by the access point and <Ethernet port> indicates the Ethernet port of the CDP device.2. If a power injector is installed, issue the command: power inline negotiation injector installed.•%CDP_PD-2-POWER_LOW: All radios disabled- HIGH_POWER_CLASSIC_NOT_ CONFIGURED inline power source <platform name> (<MAC address>)—This message indicates the access point is in low power mode with all radios disabled and has detected a Cisco switch that does not support Intelligent Power Management, but should be able to supply sufficient power. The access point must be configured for pre-standard compatibility. The< platform name> indicates the Cisco platform detected by the access point. The <MAC address> indicates the MAC address of the switch port.Note You need to upgrade the software on the Cisco switch to support Intelligent Power Management or configure the access point for pre-standard compatibility.

$3-9Cisco Aironet 1240AG Series Access Point Hardware Installation GuideOL-8371-05Chapter 3 Troubleshooting 1240AG Series Autonomous Access PointsLow Power Condition•%CDP_PD-4-POWER_OK: Full power - INJECTOR_CONFIGURED_OVERRIDE_SAFETY inline power source —This message indicates the access point has been configured to override the inline power checks and a power injector is installed. Caution When using the power inline negotiation injector override command, a power injector must always be installed to prevent a possible overload condition with an underpowered power source.Configuring Power Using the CLIIntelligent Power Management support is dependent on the version of software resident in the Cisco switch that is providing power to the access point. Each Cisco switch should be upgraded to support Intelligent Power Management. Until the software is upgraded, you can configure the access point to operate with older switch software using the following Cisco IOS CLI command:[no] power inline negotiation {prestandard source |injector {installed | override | H.H.H}}(prestandard source indicates the Cisco switch does not support Intelligent Power Management. injector installed indicates a power injector is installed on the current switch port. injector override indicates a power injector is installed and the access point is configured to override the inline power checks. When you move the access point, H.H.H is used to specify the MAC address of the new switch port where the access point was moved. A MAC address of 0.0.0 is invalid.)Caution When using the power inline negotiation injector override command, a power injector must always be installed to prevent a possible overload condition with an underpowered power source.Note The power inline negotiation injector installed command will fail if CDP is disabled. When using the power inline negotiation injector override command, you must use a power injector to prevent possibly overloading underpowered power sources.You can use this Cisco IOS CLI command to inform the access point of the following:•The Cisco switch does not support Intelligent Power Management but should be able to supply sufficient power.•A power injector is being used to supply sufficient power and the Cisco switch does not support Intelligent Power Management. •The access point was moved to a new Cisco switch port and a power injector is being used to supply sufficient power.Caution If the access point receives power through PoE, the output current of the power sourcing equipment (PSE) cannot exceed 400 mA per port. The power source must comply with IEEE802.3af or IEC60950 for limited power sources.Note After completing your configuration changes, you must remove the serial console cable from the access point.$

Cisco Systems 102066 Cisco Aironet 1240 Series 802.11b/g Access Point User Manual

Cisco Systems Inc Cisco Aironet 1240 Series 802.11b/g Access Point Users Manual

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