Cambium Networks XS3700A XS-3700 Wireless LAN Array User Manual xirrus array userguide2

Xirrus, Inc. XS-3700 Wireless LAN Array xirrus array userguide2

Contents

Users Manual Part 1

XS390037003500WirelessWirelessWirelessWirelessWirelessLAN ArrayLAN ArrayLAN ArrayLAN ArrayLAN ArrayUser’s GuideMarch 17th, 2006
All rights reserved. This document may not be reproduced or disclosed in whole or in part by any means without the written consent of Xirrus, Inc.Part Number: 800-0006-001(Revision E)Wireless LAN ArrayXS-3900, XS-3700, XS-3500
Trademarksis a trademark of Xirrus, Inc. All other trademarks and brand namesare marks of their respective holders.NoticesFCC NoticeThis device complies with Part 15 of the FCC Rules, with operation subject to thefollowing two conditions: (1) This device may not cause harmful interference, and(2) this device must accept any interference received, including interference thatmay cause unwanted operation.This equipment has been tested and found to comply with the limits for a Class Adigital device, pursuant to Part 15 of the FCC rules. These limits are designed toprovide reasonable protection against harmful interference in a residentialinstallation. This equipment generates, uses and can radiate RF energy and, if notinstalled and used in accordance with the instructions, may cause harmfulinterference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment doescause harmful interference to radio or television reception, which can bedetermined by turning the equipment off and on, the user is encouraged to try tocorrect the interference by one or more of the following safety measures:zReorient or relocate the receiving antenna.zIncrease the separation between the equipment and the receiver.zConsult the dealer or an experienced wireless technician for help.Use of a shielded twisted pair (STP) cable must be used for all Ethernetconnections in order to comply with EMC requirements.RF Radiation Hazard WarningTo ensure compliance with FCC RF exposure requirements, this device must beinstalled in a location where the antennas of the device will have a minimumdistance of at least 25 cm (9.84 inches) from all persons. Using higher gainantennas and types of antennas not certified for use with this product is notallowed. The device shall not be co-located with another transmitter.
Non-Modification StatementUnauthorized changes or modifications to the device are not permitted. Use onlythe supplied internal antenna, or external antennas supplied by the manufacturer.Modifications to the device will void the warranty and may violate FCCregulations. Please go to the Xirrus Web site for a list of all approved antennas.Indoor UseThis product has been designed for indoor use. Operation of channels in the5150MHz to 5250MHz band is permitted indoors only to reduce the potential forharmful interference to co-channel mobile satellite systems.Maximum Antenna GainCurrently, the maximum antenna gain for external antennas is limited to 5.2dBifor operation in the 2400MHz to 2483.5MHz, 5150MHz to 5250MHz and5725MHz to 5825MHz bands. The antenna gains must not exceed maximum EIRPlimits set by the FCC / Industry Canada.High Power RadarsHigh power radars are allocated as primary users (meaning they have priority) inthe 5150MHz to 5250MHz and 5650MHz to 5850MHz bands. These radars couldcause interference and/or damage to LELAN devices used in Canada.Industry Canada Notice and MarkingThis Class A digital apparatus complies with Canadian ICES-003.Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.The term “IC:” before the radio certification number only signifies that IndustryCanada technical specifications were met.To reduce potential radio interference to other users, the antenna type and its gainshould be so chosen that the equivalent isotropically radiated power (EIRP) is notmore than that required for successful communication.
EU Directive 1999/5/EC Compliance InformationThis section contains compliance information for the Xirrus Wireless LAN Arrayfamily of products, which includes the XS-3900, XS-3700 and XS-3500. Thecompliance information contained in this section is relevant to the EuropeanUnion and other countries that have implemented the EU Directive 1999/5/EC.Declaration of ConformityCesky [Czech] Toto zahzeni je v souladu se základnimi požadavky aostatnimi odpovidajcimi ustano veni mi SmČrnice1999/5/EC.Dansk [Danish] Dette udstyr er i overensstemmelse med devæsentlige krav og andre relevante bestemmelser iDirektiv 1999/5/EF.Deutsch [German] Dieses Gerat entspricht den grundlegendenAnforderungen und den weiteren entsprechendenVorgaben der Richtinie 1999/5/EU.Eesti [Estonian] See seande vastab direktiivi 1999/5/EU olulistelenöuetele ja teistele as jakohastele sätetele.English This equipment is in compliance with the essentialrequirements and other relevant provisions ofDirective 1999/5/EC.Español [Spain] Este equipo cump le con los requisitos esenciales asicomo con otras disposiciones de la Directiva 1999/5/CE.ǼȜȜȘȞȣțȘ [Greek] ǹȣIJȩȗ Ƞ İȟȠʌȜIJıµȩȗ İȓȞĮȚ ıİ ıȣµµȩȡijȦıȘ µİIJȚȗȠȣıȚȫįİȚȗ ĮʌĮȚIJȒıİȚȗ țĮȚ ȪȜȜİȗ ıȤİIJȚțȑȗ įȚĮIJȐȟİȚȗ IJȘȗȅįȘȖȚĮȗ 1999/5/EC.Français [French] Cet appareil est conforme aux exigences essentielleset aux autres dispositions pertinentes de la Directive1999/5/EC.Ďslenska [Icelandic] Þetta tæki er samkvæmt grunnkröfum og öðrumviðeigandi ákvæðum Tilskipunar 1999/5/EC.
Italiano [Italian] Questo apparato é conforme ai requisiti essenziali edagli altri principi sanciti dalla Direttiva 1999/5/CE.Latviski [Latvian] ŠƯiekƗrta atbilst DirektƯvas 1999/5/EK bnjtiskajƗprasƯbƗm un citiem ar to saistƯtajiem noteikumiem.Lietuviǐ [Lithuanian] Šis Ƴrenginys tenkina 1995/5/EB Direktyvosesminius reikalavimus ir kitas šios direktyvosnuostatas.Nederlands [Dutch] Dit apparant voldoet aan de essentiele eisen enandere van toepassing zijnde bepalingen van deRichtlijn 1995/5/EC.Malti [Maltese] Dan l-apparant huwa konformi mal-htigiet essenzjaliu l-provedimenti l-ohra rilevanti tad-Direttiva 1999/5/EC.Margyar [Hungarian] Ez a készülék teljesiti az alapvetö követelményeketés más 1999/5/EK irányelvben meghatározottvonatkozó rendelkezéseket.Norsk [Norwegian] Dette utstyret er i samsvar med de grunnleggendekrav og andre relevante bestemmelser i EU-direktiv1999/5/EF.Polski [Polish] Urządzenie jest zgodne z ogólnymi wymaganiamioraz sczególnymi mi warunkami okreĞlony miDyrektywą. UE:1999/5/EC.Portuguès [Portugese] Este equipamento está em conformidade com osrequisitos essenciais e outras provisões relevantes daDirectiva 1999/5/EC.Slovensko [Slovenian] Ta naprava je skladna z bistvenimi zahtevami inostalimi relevantnimi popoji Direktive 1999/5/EC.Slovensky [Slovak] Toto zariadenie je v zhode so základnýmipožadavkami a inými prislušnými nariadeniamidirektiv: 1999/5/EC.
Assessment CriteriaThe following standards were applied during the assessment of the productagainst the requirements of the Directive 1999/5/EC:zRadio: EN 301 893 and EN 300 328 (if applicable)zEMC: EN 301 489-1 AND en 301 489-17zSafety: EN 50371 to EN 50385CE MarkingFor the Xirrus Wireless LAN Array (XS-3900, XS-3700 and XS-3500), the CE markand Class-2 identifier opposite are affixed to the equipment and its packaging:Suomi [Finnish] Tämä laite täyttää direktiivin 1999/5//EY olennaisetvaatimukset ja on siinä asetettujen muiden laitettakoskevien määräysten mukainen.Svenska [Swedish] Denna utrustning är i överensstämmelse med deväsentliga kraven och andra relevanta bestämmelseri Direktiv 1999/5/EC.
WEEE CompliancezNatural resources were used in the production ofthis equipment.zThis equipment may contain hazardous substancesthat could impact the health of the environment.zIn order to avoid harm to the environment andconsumption of natural resources, we encourageyou to use appropriate take-back systems whendisposing of this equipment.zThe appropriate take-back systems will reuse orrecycle most of the materials of this equipment in away that will not harm the environment.zThe crossed-out wheeled bin symbol (inaccordance with European Standard EN 50419)invites you to use those take-back systems andadvises you not to combine the material withrefuse destined for a land fill.zIf you need more information on collection, re-useand recycling systems, please contact your local orregional waste administration.zPlease contact Xirrus for specific information on theenvironmental performance of our products.
National RestrictionsIn the majority of the EU and other European countries, the 2.4 GHz and 5 GHzbands have been made available for the use of Wireless LANs. The following tableprovides an overview of the regulatory requirements in general that areapplicable for the 2.4 GHz and 5 GHz bands.*Dynamic frequency selection and Transmit Power Control is required in thesefrequency bands.**France is indoor use only in the upper end of the band.The requirements for any country may change at any time. Xirrus recommendsthat you check with local authorities for the current status of their nationalregulations for both 2.4 GHz and 5 GHz wireless LANs.The following countries have additional requirements or restrictions than thoselisted in the above table:BelgiumThe Belgian Institute for Postal Services and Telecommunications (BIPT) mustbe notified of any outdoor wireless link having a range exceeding 300 meters.Xirrus recommends checking at www.bipt.be for more details.Draadloze verbindingen voor buitengebruik en met een reikwijdte van meer dan 300meter dienen aangemeld te worden bij het Belgisch Instituut voor postdiensten entelecommunicatie (BIPT). Zie www.bipt.be voor meer gegevens.Les liasons sans fil pour une utilisation en extérieur d’une distance supérieure à 300mèters doivent être notifiées à l’Institut Belge des services Postaux et desTélécommunications (IBPT). Visitez www.bipt.be pour de plus amples détails.Frequency Band (MHz)Max Power Level (EIRP) (mW)Indoor ONLYOutdoor ONLY2400–2483.5 100 X X**5150–5350* 200 X N/A5470–5725* 1000 X X
FranceThe use of the band from 5470 MHz to 5725 MHz is not allowed in France.The band from 5150 MHz to 5350 MHz can only be used indoors. If theproduct is used outdoors, the use of any 5 GHz frequency is not allowed, andpower output is restricted in some portions of the 2.4 GHz band. Refer to thefollowing table or go to www.art-telecom.fr for more details.L’utilisation de la bande 5470 MHz à 5725 MHz n’est pas autorisée en France. Labande de 5150 MHz à 5350 MHz ne peut être utilisée qu’ à l’intérieur d’un bâtiment.Dans le cas d’une utilisation en extérieur aucune fréquence dans le bandes des 5 GHzn’est permise, tandis que la puissance est limitée dans certaines parties de la bandedes 2.4 GHz. Reportez-vous à la suivre table ou visitez www.art-telecom.fr pour deplus amples détails.The following table shows the applicable power levels for 2.4 GHz and 5 GHzin France (Puissances utilisables dans les bandes 2.4 GHz et 5 GHz en France).Location Frequency Range (MHz) Power (EIRP)Indoor(Intérieur)2400–2483.55150–53505470–5725100 mW (20 dBm)200 mW (23 dBm)Not allowed (Interdit)Outdoor(Extérieur)2400–24542454–2483.55150–53505470–5725100 mW (20 dBm)10 mW (10 dBm)Not allowed (Interdit)Not allowed (Interdit)
GreeceA license from EETT is required for the outdoor operation in the 5470 MHz to5725 MHz band. Xirrus recommends checking www.eett.gr for more details.Ç äç éïõñãȕȐéêô ùíåîùôåñéêï ñïõóôç æ íçóõ íïô ôùí 5470–5725 ÌÇzå éôñ åôȐéùíïåôÜȐüÜäåéȐôçò ÅÅÔÔ, ïõ ïñçãåȕôȐé óôåñȐȐü ó öùíç ãí ç ôïõ ÃÅÅÈÁ.åñéóóüôåñåò ëå ôïì ñåéåùóôï www.eett.grItalyThis product meets the National Radio Interface and the requirementsspecified in the National Frequency Allocation Table for Italy. Unless thiswireless LAN product is operating within the boundaries of the owner’sproperty, its use requires a “general authorization.” please check withwww.communicazioni.it/it/ for more details.Questo prodotto é conforme alla specifiche di Interfaccia Radio Nazionali e rispetta ilPiano Nazionale di ripartizione delle frequenze in Italia. Se non viene installatoall’interno del proprio fondo, l’utilizzo di prodotti wireless LAN richiede una“autorizzazione Generale.” Consultare www.communicazioni.it/it/ per maggioridettagli.Noway, Switzerland and LiechtensteinAlthough Norway, Switzerland and Liechtenstein are not EU member states,the EU Directive 1999/5/EC has also been implemented in those countries.Calculating the Maximum Output PowerThe regulatory limits for maximum output power are specified in EIRP (radiatedpower). The EIRP level of a device can be calculated by adding the gain of theantenna used (specified in dBi) to the output power available at the connector(specified in dBm).
AntennasThe Xirrus Wireless LAN Array family of products employs integrated antennasthat cannot be removed and which are not user accessible. Nevertheless, asregulatory limits are not the same throughout the EU, users may need to adjustthe conducted power setting for the radio to meet the EIRP limits applicable intheir country or region. Adjustments can be made from the product’smanagement interface—either Web Management Interface (WMI) or CommandLine Interface (CLI).Operating FrequencyThe operating frequency in a wireless LAN is determined by the access point. Assuch, it is important that the access point is correctly configured to meet the localregulations. See National Restrictions in this section for more information.If you still have questions regarding the compliance of Xirrus products or youcannot find the information you are looking for, please contact us at:Xirrus, Inc.370 North Westlake Blvd, Suite 200Westlake Village, CA 91362USATel: 1.805.497.0955Fax: 1.805.449.1180www.xirrus.com
Safety WarningsTranslated safety warnings appear on the following page. !Safety WarningsRead all user documentation before powering this device. All Xirrusinterconnected equipment should be contained indoors. This product isnot suitable for outdoor operation. Please verify the integrity of thesystem ground prior to installing Xirrus equipment. Additionally,verify that the ambient operating temperature does not exceed 50°C.!Explosive Device Proximity WarningDo not operate the XS-3900/XS-3700/XS-3500 unit near unshieldedblasting caps or in an explosive environment unless the device has beenmodified to be especially qualified for such use.!Lightning Activity WarningDo not work on the XS-3900/XS-3700/XS-3500 or connect or disconnectcables during periods of lightning activity.!Circuit Breaker WarningThe XS-3900/XS-3700/XS-3500 relies on the building’s installation forover current protection. Ensure that a fuse or circuit breaker no largerthan 120 VAC, 15A (U.S.) or 240 VAC, 10A (International) is used on allcurrent-carrying conductors.
Translated Safety WarningsAvertissements de Sécurité!SécuritéLisez l'ensemble de la documentation utilisateur avant de mettre cetappareil sous tension. Tous les équipements Xirrus interconnectésdoivent être installés en intérieur. Ce produit n'est pas conçu pour êtreutilisé en extérieur. Veuillez vérifier l'intégrité de la terre du systèmeavant d'installer des équipements Xirrus. Vérifiez également que latempérature de fonctionnement ambiante n'excède pas 50°C.!Proximité d'appareils explosifsN'utilisez pas l'unité XS-3900/XS-3700/XS-3500 à proximité d'amorcesnon blindées ou dans un environnement explosif, à moins quel'appareil n'ait été spécifiquement modifié pour un tel usage.!FoudreN'utilisez pas l'unité XS-3900/XS-3700/XS-3500 et ne branchez pas oune débranchez pas de câbles en cas de foudre.!DisjoncteurL'unité XS-3900/XS-3700/XS-3500 dépend de l'installation du bâtimentpour ce qui est de la protection contre les surintensités. Assurez-vousqu'un fusible ou qu'un disjoncteur de 120 Vca, 15 A (États-Unis) ou de240 Vca, 10 A (International) maximum est utilisé sur tous lesconducteurs de courant.
Software Warranty and License AgreementTHIS SOFTWARE LICENSE AGREEMENT (THE “AGREEMENT”) IS A LEGALAGREEMENT BETWEEN YOU (“CUSTOMER”) AND LICENSOR (AS DEFINEDBELOW) AND GOVERNS THE USE OF THE SOFTWARE INSTALLED ON THEPRODUCT (AS DEFINED BELOW). IF YOU ARE AN EMPLOYEE OR AGENTOF CUSTOMER, YOU HEREBY REPRESENT AND WARRANT TO LICENSORTHAT YOU HAVE THE POWER AND AUTHORITY TO ACCEPT AND TOBIND CUSTOMER TO THE TERMS AND CONDITIONS OF THIS AGREEMENT(INCLUDING ANY THIRD PARTY TERMS SET FORTH HEREIN). IF YOU DONOT AGREE TO ALL OF THE TERMS OF THIS AGREEMENT RETURN THEPRODUCT AND ALL ACCOMPANYING MATERIALS (INCLUDING ALLDOCUMENTATION) TO THE RELEVANT VENDOR FOR A FULL REFUND OFTHE PURCHASE PRICE THEREFOR. CUSTOMER UNDERSTANDS AND AGREES THAT USE OF THE SOFTWARESHALL BE DEEMED AN AGREEMENT TO THE TERMS AND CONDITIONSGOVERNING SUCH SOFTWARE AND THAT CUSTOMER IS BOUND BY ANDBECOMES A PARTY TO THIS AGREEMENT.1. Definitions1.1 “Documentation” means the user manuals and all other alldocumentation, instructions or other similar materials accompanying theSoftware covering the installation, application, and use thereof.1.2 “Licensor” means XIRRUS and its suppliers.1.3 “Product” means a multi-radio access point containing four or moredistinct radios capable of simultaneous operation on four or more non-overlapping channels.1.4 “Software” means, collectively, each of the application and embeddedsoftware programs delivered to Customer in connection with thisAgreement. For purposes of this Agreement, the term Software shall bedeemed to include any and all Documentation and Updates providedwith or for the Software. 1.5 “Updates” means any bug-fix, maintenance or version release to theSoftware that may be provided to Customer from Licensor pursuant tothis Agreement or pursuant to any separate maintenance and supportagreement entered into by and between Licensor and Customer.
2. Grant of Rights2.1 Software. Subject to the terms and conditions of this Agreement, Licensorhereby grants to Customer a perpetual, non-exclusive, non-sublicenseable, non-transferable right and license to use the Softwaresolely as installed on the Product in accordance with the accompanyingDocumentation and for no other purpose. 2.2 Ownership. The license granted under Sections 2.1 above with respect tothe Software does not constitute a transfer or sale of Licensor's or itssuppliers' ownership interest in or to the Software, which is solelylicensed to Customer. The Software is protected by both national andinternational intellectual property laws and treaties. Except for theexpress licenses granted to the Software, Licensor and its suppliers retainall rights, title and interest in and to the Software, including (i) any and alltrade secrets, copyrights, patents and other proprietary rights therein orthereto or (ii) any Marks (as defined in Section 2.3 below) used inconnection therewith. In no event shall Customer remove, efface orotherwise obscure any Marks contained on or in the Software. All rightsnot expressly granted herein are reserved by Licensor. 2.3 Copies. Customer shall not make any copies of the Software but shall bepermitted to make a reasonable number of copies of the relatedDocumentation. Whenever Customer copies or reproduces all or any partof the Documentation, Customer shall reproduce all and not efface anytitles, trademark symbols, copyright symbols and legends, and otherproprietary markings or similar indicia of origin (“Marks”) on or in theDocumentation.
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3.2 DISCLAIMER. EXCEPT AS EXPRESSLY STATED IN THIS SECTION 3,ALL ADDITIONAL CONDITIONS, REPRESENTATIONS, ANDWARRANTIES, WHETHER IMPLIED, STATUTORY OR OTHERWISE,INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIESOR CONDITIONS OF MERCHANTABILITY, FITNESS FOR APARTICULAR PURPOSE, SATISFACTORY QUALITY, ACCURACY,AGAINST INFRINGEMENT OR ARISING FROM A COURSE OFDEALING, USAGE, OR TRADE PRACTICE, ARE HEREBYDISCLAIMED BY LICENSOR AND ITS SUPPLIERS. THIS DISCLAIMERSHALL APPLY EVEN IF ANY EXPRESS WARRANTY AND LIMITEDREMEDY OFFERED BY LICENSOR FAILS OF ITS ESSENTIALPURPOSE. ALL WARRANTIES PROVIDED BY LICENSOR ARESUBJECT TO THE LIMITATIONS OF LIABILITY SET FORTH IN THISAGREEMENT. 3.3 HAZARDOUS APPLICATIONS. THE SOFTWARE IS NOT DESIGNEDOR INTENDED FOR USE IN HAZARDOUS ENVIRONMENTSREQUIRING FAIL SAFE PERFORMANCE, SUCH AS IN THEOPERATION OF A NUCLEAR FACILITY, AIRCRAFT NAVIGATION ORCOMMUNICATIONS SYSTEMS, AIR TRAFFIC CONTROLS OR OTHERDEVICES OR SYSTEMS IN WHICH A MALFUNCTION OF THESOFTWARE WOULD RESULT IN FORSEEABLE RISK OF INJURY ORDEATH TO THE OPERATOR OF THE DEVICE OR SYSTEM OR TOOTHERS (“HAZARDOUS APPLICATIONS”). CUSTOMER ASSUMESANY AND ALL RISKS, INJURIES, LOSSES, CLAIMS AND ANY OTHERLIABILITIES ARISING OUT OF THE USE OF THE SOFTWARE IN ANYHAZARDOUS APPLICATIONS.3.4 Limitation of Liability.(a) TOTAL LIABILITY. NOTWITHSTANDING ANYTHING ELSEHEREIN, ALL LIABILITY OF LICENSOR AND ITS SUPPLIERSUNDER THIS AGREEMENT SHALL BE LIMITED TO THEAMOUNT PAID BY CUSTOMER FOR THE RELEVANTSOFTWARE, OR PORTION THEREOF, THAT GAVE RISE TO SUCHLIABILITY OR ONE HUNDRED UNITED STATES DOLLARS(US$100), WHICHEVER IS GREATER. THE LIABILITY OFLICENSOR AND ITS SUPPLIERS UNDER THIS SECTION SHALLBE CUMULATIVE AND NOT PER INCIDENT.
(b) DAMAGES. IN NO EVENT SHALL LICENSOR, ITS SUPPLIERS ORTHEIR RELEVANT SUBCONTRACTORS BE LIABLE FOR (A) ANYINCIDENTAL, SPECIAL, PUNITIVE OR CONSEQUENTIALDAMAGES, LOST PROFITS OR LOST OR DAMAGED DATA, ORANY INDIRECT DAMAGES, WHETHER ARISING IN CONTRACT,TORT (INCLUDING NEGLIGENCE AND STRICT LIABILITY) OROTHERWISE OR (B) ANY COSTS OR EXPENSES FOR THEPROCUREMENT OF SUBSTITUTE GOODS OR SERVICES IN EACHCASE, EVEN IF LICENSOR OR ITS SUPPLIERS HAVE BEENINFORMED OF THE POSSIBILITY OF SUCH DAMAGES.3.5 Exclusions. SOME JURISDICTIONS DO NOT PERMIT THELIMITATIONS OF LIABILITY AND LIMITED WARRANTIES SETFORTH UNDER THIS AGREEMENT. IN THE EVENT YOU ARELOCATED IN ANY SUCH JURISDICTION, THE FOREGOINGLIMITATIONS SHALL APPLY ONLY TO THE MAXIMUM EXTENTPERMITTED IN SUCH JURISDICTIONS. IN NO EVENT SHALLTHE FOREGOING EXCLUSIONS AND LIMITATIONS ONDAMAGES BE DEEMED TO APPLY TO ANY LIABILITY BASEDON FRAUD, WILLFUL MISCONDUCT, GROSS NEGLIGENCE ORPERSONAL INJURY OR DEATH.4. Confidential Information4.1 Generally. The Software (and its accompanying Documentation)constitutes Licensor's and its suppliers' proprietary and confidentialinformation and contains valuable trade secrets of Licensor and itssuppliers (“Confidential Information”). Customer shall protect thesecrecy of the Confidential Information to the same extent it protects itsother valuable, proprietary and confidential information of a similarnature but in no event shall Customer use less than reasonable care tomaintain the secrecy of the Confidential Information. Customer shall notuse the Confidential Information except to exercise its rights or performits obligations as set forth under this Agreement. Customer shall notdisclose such Confidential Information to any third party other thansubject to non-use and non-disclosure obligations at least as protective ofa party's right in such Confidential Information as those set forth herein. 4.2 Return of Materials. Customer agrees to (i) destroy all ConfidentialInformation (including deleting any and all copies contained on any ofCustomer's Designated Hardware or the Product) within fifteen (15) daysof the date of termination of this Agreement or (ii) if requested byLicensor, return, any Confidential Information to Licensor within thirty(30) days of Licensor's written request.
5. Term and Termination5.1 Term . Subject to Section 5.2 below, this Agreement will take effect on theEffective Date and will remain in force until terminated in accordancewith this Agreement.5.2 Termination Events. This Agreement may be terminated immediatelyupon written notice by either party under any of the followingconditions: (a) If the other party has failed to cure a breach of any material term orcondition under the Agreement within thirty (30) days after receipt ofnotice from the other party; or(b) Either party ceases to carry on business as a going concern, eitherparty becomes the object of the institution of voluntary orinvoluntary proceedings in bankruptcy or liquidation, whichproceeding is not dismissed within ninety (90) days, or a receiver isappointed with respect to a substantial part of its assets.5.3 Effect of Termination.(a) Upon termination of this Agreement, in whole or in part, Customershall pay Licensor for all amounts owed up to the effective date oftermination. Termination of this Agreement shall not constitute awaiver for any amounts due. (b) The following Sections shall survive the termination of thisAgreement for any reason: Sections 1, 2.2, 2.4, 3, 4, 5.3, and 6. (c) No later than thirty (30) days after the date of termination of thisAgreement by Licensor, Customer shall upon Licensor's instructionseither return the Software and all copies thereof; all Documentationrelating thereto in its possession that is in tangible form or destroy thesame (including any copies thereof contained on Customer'sDesignated Hardware). Customer shall furnish Licensor with acertificate signed by an executive officer of Customer verifying thatthe same has been done.
6. MiscellaneousIf Customer is a corporation, partnership or similar entity, then the license tothe Software and Documentation that is granted under this Agreement isexpressly conditioned upon and Customer represents and warrants toLicensor that the person accepting the terms of this Agreement is authorizedto bind such entity to the terms and conditions herein. If any provision of thisAgreement is held to be invalid or unenforceable, it will be enforced to theextent permissible and the remainder of this Agreement will remain in fullforce and effect. During the course of use of the Software, Licensor maycollect information on your use thereof; you hereby authorize Licensor to usesuch information to improve its products and services, and to disclose thesame to third parties provided it does not contain any personally identifiableinformation. The express waiver by either party of any provision, conditionor requirement of this Agreement does not constitute a waiver of any futureobligation to comply with such provision, condition or requirement.Customer and Licensor are independent parties. Customer may not export orre-export the Software or Documentation (or other materials) withoutappropriate United States, European Union and foreign government licensesor in violation of the United State's Export Administration Act or foreignequivalents and Customer shall comply with all national and internationallaws governing the Software. This Agreement will be governed by andconstrued under the laws of the State of California and the United States asapplied to agreements entered into and to be performed entirely withinCalifornia, without regard to conflicts of laws provisions thereof and theparties expressly exclude the application of the United Nations Conventionon Contracts for the International Sales of Goods and the Uniform ComputerInformation Transactions Act (as promulgated by any State) to thisAgreement. Suits or enforcement actions must be brought within, and eachparty irrevocably commits to the exclusive jurisdiction of, the state andfederal courts located in Ventura County, California. Customer may notassign this Agreement by operation of law or otherwise, without the priorwritten consent of Licensor and any attempted assignment in violation of theforegoing shall be null and void. This Agreement cancels and supersedes allprior agreements between the parties. This Agreement may not be variedexcept through a document agreed to and signed by both parties. Any printedterms and conditions contained in any Customer purchase order or in anyLicensor acknowledgment, invoice or other documentation relating to theSoftware shall be deemed deleted and of no force or effect and any additionaltyped and/or written terms and conditions contained shall be foradministrative purposes only, i.e. to identify the types and quantities ofSoftware to be supplied, line item prices and total price, delivery schedule,and other similar ordering data, all in accordance with the provisions of thisAgreement.
Hardware Warranty AgreementPLEASE READ THIS AGREEMENT CAREFULLY BEFORE USING THISPRODUCTBY USING THIS PRODUCT, YOU ACKNOWLDEGE THAT YOU HAVE READAND UNDERSTOOD ALL THE TERMS AND CONDITIONS OF THISAGREEMENT AND THAT YOU ARE CONSENTING TO BE BOUND BY THISAGREEMENT. IF YOU DO NOT AGREE TO ALL OF THE TERMS OF THISAGREEMENT, RETURN THE UNUSED PRODUCT TO THE PLACE OFPURCHASE FOR A FULL REFUND.LIMITED WARRANTY. Xirrus warrants that for a period of one year from thedate of purchase by the original purchaser (“Customer”): (i) the Xirrus Equipment(“Equipment”) will be free of defects in materials and workmanship undernormal use; and (ii) the Equipment substantially conforms to its publishedspecifications. Except for the foregoing, the Equipment is provided AS IS. Thislimited warranty extends only to Customer as the original purchaser. Customer'sexclusive remedy and the entire liability of Xirrus and its suppliers under thislimited warranty will be, at Xirrus' option, repair, replacement, or refund of theEquipment if reported (or, upon request, returned) to the party supplying theEquipment to Customer. In no event does Xirrus warrant that the Equipment iserror free or that Customer will be able to operate the Equipment withoutproblems or interruptions. This warranty does not apply if the Equipment (a) has been altered, except byXirrus, (b) has not been installed, operated, repaired, or maintained in accordancewith instructions supplied by Xirrus, (c) has been subjected to abnormal physicalor electrical stress, misuse, negligence, or accident, or (d) is used in ultra-hazardous activities. DISCLAIMER. EXCEPT AS SPECIFIED IN THIS WARRANTY, ALL EXPRESS ORIMPLIED CONDITIONS, REPRESENTATIONS, AND WARRANTIESINCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTY OFMERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE,OR TRADE PRACTICE, ARE HEREBY EXCLUDED TO THE EXTENTALLOWED BY APPLICABLE LAW. IN NO EVENT WILL XIRRUS OR ITS SUPPLIERS BE LIABLE FOR ANY LOSTREVENUE, PROFIT, OR DATA, OR FOR SPECIAL, INDIRECT,CONSEQUENTIAL, INCIDENTAL, OR PUNITIVE DAMAGES HOWEVERCAUSED AND REGARDLESS OF THE THEORY OF LIABILITY ARISING OUTOF THE USE OF OR INABILITY TO USE THE EQUIPMENT EVEN IF XIRRUSOR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCHDAMAGES. In no event shall Xirrus' or its suppliers' liability to Customer,whether in contract, tort (including negligence), or otherwise, exceed the pricepaid by Customer.
The foregoing limitations shall apply even if the above-stated warranty fails of itsessential purpose. SOME STATES DO NOT ALLOW LIMITATION OREXCLUSION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTALDAMAGES. The above warranty DOES NOT apply to any evaluation Equipment madeavailable for testing or demonstration purposes. All such Equipment is providedAS IS without any warranty whatsoever. Customer agrees the Equipment and related documentation shall not be used inlife support systems, human implantation, nuclear facilities or systems or anyother application where failure could lead to a loss of life or catastrophic propertydamage, or cause or permit any third party to do any of the foregoing. All information or feedback provided by Customer to Xirrus with respect to theProduct shall be Xirrus' property and deemed confidential information of Xirrus.Equipment including technical data, is subject to U.S. export control laws,including the U.S. Export Administration Act and its associated regulations, andmay be subject to export or import regulations in other countries. Customeragrees to comply strictly with all such regulations and acknowledges that it hasthe responsibility to obtain licenses to export, re-export, or import Equipment.This Agreement shall be governed by and construed in accordance with the lawsof the State of California, United States of America, as if performed wholly withinthe state and without giving effect to the principles of conflict of law. If anyportion hereof is found to be void or unenforceable, the remaining provisions ofthis Warranty shall remain in full force and effect. This Warranty constitutes theentire agreement between the parties with respect to the use of the Equipment. Manufacturer is Xirrus, Inc. 370 North Westlake Blvd #200 Westlake Village, CA91362.
Wireless LAN ArrayTable of Contents iTable of ContentsAll topics listed in this Table of Contents are clickable, which means you caninstantly jump to any selected topic with a click of your mouse button. Items thatdo not appear in the TOC list—they are part of the Front Matter, prior to this Tableof Contents—include the following:zTrademarkszNoticeszEU Directive 1999/5/EC Compliance InformationzSafety WarningszTranslated Safety WarningszSoftware Warranty and License AgreementzHardware Warranty AgreementList of Figures...................................................................................... ixIntroduction ......................................................................................... 1The Xirrus Family of Products ............................................................................... 1Nomenclature .................................................................................................... 2About this User’s Guide .......................................................................................... 2Organization ...................................................................................................... 2Notes and Cautions .......................................................................................... 4Screen Images .................................................................................................... 4Your User’s Guide as a PDF Document ........................................................ 4Hyperlinks ......................................................................................................... 4Why Choose the Xirrus Wireless LAN Array? .................................................... 5Product Overview .................................................................................................... 6Enterprise Class Security ................................................................................. 6Deployment Flexibility .................................................................................... 7Remote DC Power System (Optional) .................................................... 8Enterprise Class Management ........................................................................ 9Key Features and Benefits ..................................................................................... 10High Capacity and High Performance ........................................................ 10Extended Coverage ......................................................................................... 11Non-Overlapping Channels .......................................................................... 12
Wireless LAN Arrayii Table of ContentsSecure Wireless Access .................................................................................. 12Applications Enablement .............................................................................. 12SDMA Optimization ...................................................................................... 12Easy Deployment ............................................................................................ 12Product Specifications (XS-3900 and XS-3700) .................................................. 13Product Specifications (XS-3500) ......................................................................... 17Installing the Xirrus Array................................................................ 21Installation Prerequisites ...................................................................................... 21Optional Network Components ................................................................... 23Client Requirements ....................................................................................... 23Planning Your Installation .................................................................................... 24General Deployment Considerations .......................................................... 24Coverage and Capacity Planning ................................................................. 25Placement .................................................................................................. 25RF Patterns ................................................................................................ 26Calculating Areas .................................................................................... 27Capacity and Cell Sizes ........................................................................... 28Sample 802.11a Cells ............................................................................... 29Fine Tuning Cell Sizes ............................................................................. 30Roaming Considerations ........................................................................ 30Allocating Channels ................................................................................ 31Deployment Examples ............................................................................ 32Failover Planning ............................................................................................ 33Port Failover Protection .......................................................................... 33Switch Failover Protection ..................................................................... 34Power Planning ............................................................................................... 35AC Power .................................................................................................. 35Remote Distributed DC Power .............................................................. 35Security Planning ............................................................................................ 35Wireless Encryption ................................................................................ 35Authentication ......................................................................................... 36Network Management Planning .................................................................. 37Deployment Summary ................................................................................... 38Installation Workflow ........................................................................................... 39Unpacking the Xirrus Array ................................................................................. 40Installing Your Xirrus Wireless LAN Array ...................................................... 41
Wireless LAN ArrayTable of Contents iiiChoosing a Location ....................................................................................... 41Wiring Considerations ............................................................................ 42Mounting the Unit .......................................................................................... 43Attaching the T-Bar Clips ....................................................................... 44Installing the Mounting Plate ................................................................ 45Connecting the Cables ............................................................................ 46Attaching the Array to the Mounting Plate (XS-3900) ....................... 47Attaching the Array to the Mounting Plate (XS-3500) ....................... 48Securing the Array ................................................................................... 49Dismounting the Array ........................................................................... 50Powering Up the Xirrus Wireless LAN Array ................................................... 51Establishing Communication with the Array .................................................... 53Using the Serial Port ....................................................................................... 53Using the Ethernet Ports ................................................................................ 53Logging In ........................................................................................................ 53Performing the Express Setup Procedure ........................................................... 54Kit Contents ..................................................................................................... 60Tools Required ................................................................................................ 60Mark the Wall Position .................................................................................. 61Install the SNAPTOGGLE™ Toggle Bolts .................................................. 62Attach the Mounting Plate to the Wall Mounting Bracket ....................... 63Attach the Wall Mounting Bracket/Plate Assembly to the Wall ............ 63Mount the Array ............................................................................................. 64The Web Management Interface ................................................... 65An Overview .......................................................................................................... 65Content ............................................................................................................. 66Structure ........................................................................................................... 67Status Bar .................................................................................................. 68Applying Configuration Changes ................................................................ 68Character Restrictions .................................................................................... 68Configuring the Xirrus Array............................................................ 69Logging In ............................................................................................................... 69Making Configuration Changes to the Array .................................................... 70Array Status ..................................................................................................... 70Express Setup .................................................................................................. 73
Wireless LAN Arrayiv Table of ContentsNetwork Interfaces ......................................................................................... 79Network Settings ..................................................................................... 80Network Statistics .................................................................................... 84DHCP Settings ......................................................................................... 85DNS Settings ............................................................................................. 87IAP Interfaces .................................................................................................. 89IAP Settings .............................................................................................. 90Global Settings ......................................................................................... 93Global Settings .11a ................................................................................. 96Global Settings .11bg ............................................................................... 99IAP LED Settings ................................................................................... 103Statistics ................................................................................................... 104Statistics (for specific radios) ................................................................ 105Statistics (for all radios) ........................................................................ 106SSID ................................................................................................................. 107Understanding SSIDs ............................................................................ 108SSID Management ................................................................................. 109Security ........................................................................................................... 112Security Management ........................................................................... 113Radius Server ......................................................................................... 118Radius User ............................................................................................ 120MAC Access List .................................................................................... 122Admin Management ............................................................................. 124Management Control ............................................................................ 126Rogue AP List ......................................................................................... 127Rogue Control List ................................................................................ 128Stations ........................................................................................................... 130RSSI ................................................................................................................. 131Services ........................................................................................................... 132Time Settings .......................................................................................... 133System Log ............................................................................................. 135SNMP ...................................................................................................... 137Array Info ....................................................................................................... 139Tools ................................................................................................................ 140Show Config .................................................................................................. 142Event Log ....................................................................................................... 143
Wireless LAN ArrayTable of Contents vThe Command Line Interface...................................................... 145Establishing a Secure Shell (SSH) Connection ................................................. 145Basic Commands .................................................................................................. 146Help ................................................................................................................ 146Tab Key ........................................................................................................... 146? Key ............................................................................................................... 146Save ................................................................................................................. 146Show ............................................................................................................... 146End .................................................................................................................. 146Exit .................................................................................................................. 146Quit ................................................................................................................. 146No .................................................................................................................... 146Command Modes ................................................................................................. 147Configure Mode ............................................................................................ 147Admin Mode .......................................................................................... 147Contact Info Mode ................................................................................. 147Date & Time Mode ................................................................................ 148DHCP Mode ........................................................................................... 148DNS Mode .............................................................................................. 148Radius Mode .......................................................................................... 148Run Test Mode ....................................................................................... 149Security Mode ........................................................................................ 149SNMP Mode ........................................................................................... 149SSID Mode .............................................................................................. 149Syslog Mode ........................................................................................... 150Selecting Interfaces .............................................................................................. 150Commands ............................................................................................................ 151administrator ................................................................................................. 152acl .................................................................................................................... 154console ............................................................................................................ 155contact-info .................................................................................................... 157copy ................................................................................................................. 158date-time ........................................................................................................ 159dhcp-server .................................................................................................... 160dir .................................................................................................................... 162dns ................................................................................................................... 163erase ................................................................................................................ 164
Wireless LAN Arrayvi Table of Contentseth0 .................................................................................................................. 165ftp .................................................................................................................... 167gig1 .................................................................................................................. 168gig2 .................................................................................................................. 170hostname ........................................................................................................ 172iap .................................................................................................................... 173iap global_settings ........................................................................................ 175iap global_a_settings .................................................................................... 178iap global_bg_settings .................................................................................. 180location ........................................................................................................... 182more ................................................................................................................ 183radius-server .................................................................................................. 183reboot .............................................................................................................. 185reset ................................................................................................................. 186run-script ........................................................................................................ 186run-tests .......................................................................................................... 187save ................................................................................................................. 189security ........................................................................................................... 189show ................................................................................................................ 192snmp ............................................................................................................... 194ssh .................................................................................................................... 195syslog .............................................................................................................. 196telnet ............................................................................................................... 197Appendices..................................................................................... 199Appendix A: Servicing the Xirrus Array ............................................................201Removing the Access Panel ................................................................................ 202Reinstalling the Access Panel ............................................................................. 204Replacing the FLASH Memory Module ........................................................... 205Replacing the Main System Memory ................................................................ 206Replacing the Integrated Access Point Radio Module ................................... 207Replacing the Power Supply Module ............................................................... 209Appendix B: Quick Reference Guide ................................................................211Review of WMI Pages ......................................................................................... 211Factory Default Settings ...................................................................................... 215Network Interfaces ....................................................................................... 215
Wireless LAN ArrayTable of Contents viiSerial ........................................................................................................ 215Gigabit 1 and Gigabit 2 ......................................................................... 215Fast Ethernet ........................................................................................... 216Integrated Access Points (IAPs) .................................................................. 216Server Settings ............................................................................................... 217DHCP ...................................................................................................... 217External RADIUS ................................................................................... 217Internal RADIUS .................................................................................... 218NTP .......................................................................................................... 218Syslog ...................................................................................................... 218SNMP .............................................................................................................. 218Default SSID .................................................................................................. 219Encryption ...................................................................................................... 219Administrator Account and Password ...................................................... 220Management .................................................................................................. 220Keyboard Shortcuts ............................................................................................. 220Appendix C: Technical Support .........................................................................221General Hints and Tips ....................................................................................... 221Frequently Asked Questions .............................................................................. 222Multiple SSIDs ............................................................................................... 222Security ........................................................................................................... 224VLAN Support .............................................................................................. 227Contact Information ............................................................................................ 228Glossary of Terms.......................................................................... 229Index................................................................................................ 241
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Wireless LAN ArrayList of Figures ixList of FiguresFigure 1. Adobe Acrobat (Version 6 and above) .................................................... 4Figure 2. Wireless LAN Array (XS-3900)................................................................. 6Figure 3. Wireless Coverage Patterns ...................................................................... 7Figure 4. Remote DC Power Distribution................................................................ 8Figure 5. WMI: Array Status Page............................................................................ 9Figure 6. Layout of IAPs (XS-3900)......................................................................... 10Figure 7. Antenna Patterns ...................................................................................... 11Figure 8. Wall Thickness Considerations .............................................................. 24Figure 9. Unit Placement.......................................................................................... 25Figure 10. Full (Normal) Coverage........................................................................... 26Figure 11. Adjusting RF Patterns.............................................................................. 26Figure 12. Custom Coverage ..................................................................................... 27Figure 13. Calculating the Area of a Circle.............................................................. 27Figure 14. Sample 802.11a Cells ................................................................................ 29Figure 15. Transmit Power......................................................................................... 30Figure 16. Overlapping Cells..................................................................................... 30Figure 17. Allocating Channels Manually............................................................... 31Figure 18. Deployment Scenario (54 Mbps)—Per Sector ...................................... 32Figure 19. Deployment Scenario (36 Mbps)—Per Sector ...................................... 32Figure 20. Deployment Scenario (18 Mbps)—Per Sector ...................................... 33Figure 21. Port Failover Protection........................................................................... 33Figure 22. Switch Failover Protection ...................................................................... 34Figure 23. Installation Workflow .............................................................................. 39Figure 24. Array Placement ....................................................................................... 41Figure 25. Attaching the T-Bar Clips........................................................................ 44Figure 26. Installing the Mounting Plate (XS-3900 shown)................................... 45Figure 27. Connecting the Cables ............................................................................. 46Figure 28. Attaching the Unit (XS-3900) .................................................................. 47Figure 29. Attaching the Unit (XS-3500) .................................................................. 48Figure 30. Securing the Array.................................................................................... 49Figure 31. IAP Positions (XS-3900) ........................................................................... 50Figure 32. LED Locations (XS-3900) ......................................................................... 51Figure 33. WMI: IAP LED Settings Page ................................................................. 52Figure 34. Network Interface Ports........................................................................... 53
Wireless LAN Arrayx List of FiguresFigure 35. WMI: Express Setup Page (Part 1) ......................................................... 54Figure 36. WMI: Express Setup Page (Part 2) ......................................................... 55Figure 37. WMI: Time Zones ..................................................................................... 58Figure 38. Enabling the NTP Feature ....................................................................... 59Figure 39. Wall Mount—Marking the Holes........................................................... 61Figure 40. Installing the Toggle Bolts....................................................................... 62Figure 41. Attaching the Wall Mounting Plate ....................................................... 63Figure 42. Mounting the Array on a Wall ............................................................... 64Figure 43. Web Management Interface .................................................................... 65Figure 44. WMI: Frames............................................................................................. 67Figure 45. WMI: Status Bar ........................................................................................ 68Figure 46. WMI: Logging In to the Wireless LAN Array...................................... 69Figure 47. WMI: Array Status Page .......................................................................... 70Figure 48. Linked Items.............................................................................................. 71Figure 49. WMI: Disabled Device (Partial View).................................................... 71Figure 50. IAP Cells .................................................................................................... 72Figure 51. WMI: Express Setup Page (Part 1) ......................................................... 73Figure 52. WMI: Express Setup Page (Part 2) ......................................................... 74Figure 53. WMI: Time Zones ..................................................................................... 77Figure 54. Enabling the NTP Feature ....................................................................... 78Figure 55. WMI: Network Interfaces Page .............................................................. 79Figure 56. WMI: Network Settings Page (Part 1).................................................... 80Figure 57. WMI: Network Settings Page (Part 2).................................................... 81Figure 58. Network Interface Ports........................................................................... 81Figure 59. WMI: Network Statistics Page................................................................ 84Figure 60. WMI: DHCP Settings Page...................................................................... 85Figure 61. WMI: DNS Settings Page......................................................................... 87Figure 62. WMI: IAP Interfaces Page ....................................................................... 89Figure 63. WMI: IAP Settings Page .......................................................................... 90Figure 64. Entering a Description ............................................................................. 92Figure 65. WMI: Global Settings Page...................................................................... 93Figure 66. WMI: Global Settings .11a Page.............................................................. 96Figure 67. Specifying 802.11a Data Rates ................................................................ 97Figure 68. WMI: Global Settings .11bg Page ........................................................... 99Figure 69. Specifying 802.11g Data Rates .............................................................. 100Figure 70. Specifying 802.11b Data Rates .............................................................. 100Figure 71. WMI: IAP LED Settings Page ............................................................... 103
Wireless LAN ArrayList of Figures xiFigure 72. WMI: Statistics Page............................................................................... 104Figure 73. WMI: Statistics for IAP a4 Page (XS-3700) .......................................... 105Figure 74. WMI: Statistics for All IAPs Page (XS-3700)....................................... 106Figure 75. WMI: SSID Page...................................................................................... 107Figure 76. WMI: SSID Management Page ............................................................. 109Figure 77. WMI: Security Page................................................................................ 112Figure 78. WMI: Security Management Page........................................................ 113Figure 79. WMI: Radius Server Page...................................................................... 118Figure 80. WMI: Radius User Page......................................................................... 120Figure 81. WMI: MAC Access List Page................................................................ 122Figure 82. WMI: Admin Management Page ......................................................... 124Figure 83. Management Control ............................................................................. 126Figure 84. WMI: Rogue AP List Page..................................................................... 127Figure 85. WMI: Rogue Control List Page............................................................. 128Figure 86. WMI: Stations Page ................................................................................ 130Figure 87. RSSI Page ................................................................................................. 131Figure 88. WMI: Services Page................................................................................ 132Figure 89. WMI: Time Settings Page ...................................................................... 133Figure 90. WMI: System Log Page.......................................................................... 135Figure 91. WMI: SNMP Page................................................................................... 137Figure 92. WMI: Array Info Page............................................................................ 139Figure 93. WMI: Tools Page..................................................................................... 140Figure 94. WMI: Show Config Page ....................................................................... 142Figure 95. WMI: Event Log Page ............................................................................ 143Figure 96. Command Line Interface....................................................................... 145Figure 97. CLI: Adding a New Administrator Account...................................... 153Figure 98. CLI: Default Serial Port Settings........................................................... 155Figure 99. CLI: Setting the IP Address for the Serial Port................................... 156Figure 100. CLI: Adding a New Administrator Account...................................... 157Figure 101. CLI: Disabling Daylight Savings .......................................................... 160Figure 102. CLI: Setting the IP Address for the Fast Ethernet Interface ............. 166Figure 103. CLI: Setting the IP Address for the Gigabit 1 Interface..................... 169Figure 104. CLI: Setting the IP Address for the Gigabit 2 Interface..................... 171Figure 105. CLI: Setting the Host Name of the Array............................................ 172Figure 106. CLI: Setting the Cell Size of an IAP...................................................... 174Figure 107. CLI: Enabling All Radio Interfaces ...................................................... 177Figure 108. CLI: Enabling All 802.11a Radio Interfaces ........................................ 179
Wireless LAN Arrayxii List of FiguresFigure 109. CLI: Testing Client Connectivity.......................................................... 188Figure 110. CLI: Viewing the Routing to a Client .................................................. 188Figure 111. CLI: Disabling WEP Encryption........................................................... 191Figure 112. CLI: Displaying the Current Security Settings................................... 193Figure 113. Disconnecting Power from the Array.................................................. 201Figure 114. Removing the Access Panel Screws..................................................... 202Figure 115. Removing the Access Panel .................................................................. 203Figure 116. Disconnecting the Power Supply and Fan.......................................... 203Figure 117. Reconnecting the Fan and Power Supply ........................................... 204Figure 118. Reinstalling the Access Panel................................................................ 204Figure 119. Removing the FLASH Memory Module............................................. 205Figure 120. Removing the DIMM Memory Module .............................................. 206Figure 121. Removing the Chassis Cover Nylon Screws ...................................... 207Figure 122. Removing the Chassis Cover................................................................ 207Figure 123. Lifting the Integrated Access Point Module....................................... 208Figure 124. Disconnect the Integrated Access Point Module ............................... 208Figure 125. Installing a New Access Panel (with Power Supply)........................ 209
Wireless LAN ArrayIntroduction 1IntroductionThis chapter introduces the Wireless LAN Array, including an overview of its keyfeatures and benefits, and a detailed listing of the product’s physical,environmental, technology and regulatory specifications. Section headings forthis chapter include:z“The Xirrus Family of Products” on page 1z“About this User’s Guide” on page 2z“Why Choose the Xirrus Wireless LAN Array?” on page 5z“Product Overview” on page 6z“Key Features and Benefits” on page 10z“Product Specifications (XS-3900 and XS-3700)” on page 13z“Product Specifications (XS-3500)” on page 17The Xirrus Family of ProductsThe Xirrus family of products includes the following items:zXirrus Wireless LAN Array (XS-3900 / XS-3700 / XS-3500)The Wireless WLAN Array is specifically designed for the Enterprisemarket. There are three versions of this product, each with a differentwireless capacity—16 IAPs (Integrated Access Points—radios) with theXS-3900, 8 IAPs with the XS-3700, and 4 IAPs with the XS-3500.zXirrus Wireless Management System (XM-3300)The XM-3300 is used for managing large Wireless WLAN Arraydeployments from a centralized Web-based interface. If you need detailedinformation about this product, refer to the XM-3300 User’s Guide, partnumber 800-0007-001.zXirrus Remote DC Power System (XP-3100)The XP-3100 provides distributed DC power to multiple Wireless WLANArrays, eliminating the need to run dedicated AC power to each unit andfacilitating backup power when connected via a UPS.
Wireless LAN Array2 IntroductionNomenclatureThroughout this User’s Guide, the Wireless LAN Array is also referred to as theXirrus Array, or simply the Array. In some instances, the terms product and unitare also used. When discussing specific products from the Xirrus family, theproduct name is used (for example, XS-3900, XS-3700 or XS-3500).The Xirrus Wireless Management System (XM-3300) and the Xirrus Remote DCPower System (XP-3100) are referred to as the XM-3300 and XP-3100, or XM andXP respectively.About this User’s GuideThis User’s Guide provides detailed information and procedures that will enablewireless network administrators to install, configure and manage the XirrusArray so that end users can take full advantage of the product’s features andfunctionality without technical assistance.OrganizationTopics and procedures are organized by function under the following chapterheadings:zIntroductionProvides a brief introduction to wireless technology, an overview of theproduct, including its key features and benefits, and presents the productspecifications.zInstalling the Xirrus ArrayDefines the prerequisites for deploying and installing the Array andprovides instructions to help you plan and complete a successfulinstallation.zThe Web Management InterfaceOffers an overview of the product’s embedded Web ManagementInterface, including its content and structure. It also emphasizes what youneed to do to ensure that any configuration changes you make areapplied, and provides a list of restricted characters.
Wireless LAN ArrayIntroduction 3zConfiguring the Xirrus ArrayContains procedures for configuring the Array using its embedded WebManagement Interface. It also includes instructions for logging in to theArray with your Web browser, and procedures for upgrading the systemfirmware and resetting the Array to its factory defaults.zThe Command Line InterfaceProvides instructions for configuring the Array using keywords andcommands via its embedded Command Line Interface—with examplesand syntax conventions—and includes a procedure for establishing aSecure Shell (SSH) connection to the product.zAppendix A: Servicing the Xirrus ArrayContains procedures for servicing the Array, including the removal andreinstallation of major hardware components.zAppendix B: Quick Reference GuideContains product reference information, including a review of the WebManagement Interface pages and their content, an alphabetical listing ofkeywords available with the Command Line Interface, the product’sfactory default settings, a sample event log, and some useful keyboardshortcuts.zAppendix C: Technical SupportOffers guidance to resolve technical issues, including some general hintsand tips to enhance your product experience, and a procedure forisolating problems within an Array-enabled wireless network. Alsoincludes Frequently Asked Questions (FAQs), a table of error messagesgenerated by the product, and Xirrus contact information.zGlossary of TermsProvides an explanation of terms directly related to Xirrus producttechnology, organized alphabetically.zIndexThe index is a valuable information search tool. Use the index to locatespecific topics discussed in this User’s Guide. Simply click on any pagenumber in the index to jump to the referenced topic.
Wireless LAN Array4 IntroductionNotes and CautionsThe following symbols are used throughout this User’s Guide:Screen ImagesSome screen images of the Web Management Interface have been modified forclarity. For example, an image may have been cropped to highlight a specific areaof the screen, and/or sample data may be included in some fields.Your User’s Guide as a PDF DocumentThis User’s Guide is also made available as a secure PDF (Portable DocumentFormat) file and can be viewed using the Adobe® Acrobat Reader® product. Itcannot be edited or modified. If you don’t have Acrobat Reader, you candownloaded it free-of-charge from: http://www.adobe.com.HyperlinksIf you click on body text that appears in the color TEAL (with the exception ofheadings or notes) the embedded hyperlink within the text will immediately takeyou to the referenced destination. All internal and external cross-references,including page numbers within the List of Figures and the Index, have associatedhyperlinks. After “jumping” to a referenced topic, if you want to return to theprevious page (reference source), simply click on Acrobat’s previous page button.Figure 1. Adobe Acrobat (Version 6 and above)#This symbol is used for general notes that provide useful supplementalinformation.!This symbol is used for cautions. Cautions provide critical information thatmay adversely affect the performance of the product.Previous page button
Wireless LAN ArrayIntroduction 5Why Choose the Xirrus Wireless LAN Array?In 2003 there were approximately 30,000 Wireless Local Area Networks (WLANs)operating in the public domain. Research suggests that the number will morethan quadruple by 2006. Enterprise WLANs in the private sector are alsobecoming increasingly common as businesses strive for greater flexibility in theworkplace and the need for employee mobility rises. The only requirements foran effective wireless deployment are a power source, a couple of screws, and animagination.Wireless LAN is also fully compatible with standard Ethernet protocols, soconnectivity with existing wired infrastructures is transparent to users—they canstill access and use the same applications and network services that they usewhen plugged into the company’s wired LAN infrastructure (it’s only the plugthat no longer exists).Wireless LAN has come a long way in the past few years and now offers theperformance, reliability and security that Enterprise customers have come toexpect from their networks. The technology is being driven by three major IEEEstandards:z802.11aOperates in the 5 GHz range with a maximum speed of 54 Mbps.z802.11bOperates in the 2.4 GHz range with a maximum speed of 11 Mbps. It hasa range of about 100 meters indoors and 300 meters outdoors.z802.11gSupports a higher transmission speed of 54 Mbps in the 2.4 GHz rangeand is backwards compatible with 802.11b.Whether you’re a small company with just a handful of employees, or a largecorporation with thousands, wireless has the scalability and flexibility to serveyour needs.
Wireless LAN Array6 IntroductionProduct OverviewPart of the family of Xirrus products, the Wireless LAN Array is a high capacity,multi-mode device designed for the Enterprise market, with twice the range andup to sixteen times the capacity of competitive wireless products.Figure 2. Wireless LAN Array (XS-3900)The Xirrus Array (regardless of the product model) is Wi-Fi® compliant andsimultaneously supports 802.11a, 802.11b and 802.11g clients. Enterprise classfeatures such as VLAN support and multiple SSID capability enable robustnetwork compatibility and a high level of scalability and system control. Theoptional Xirrus Wireless Management System (XM-3300) allows globalmanagement of hundreds of Arrays from a central location.The XS-3700 and XS-3500 versions of the Wireless LAN Array deliver acorrespondingly lower capacity than the XS-3900.Enterprise Class SecurityThe latest and most effective wireless encryption security standards, includingWPA (Wi-Fi Protected Access) with 802.11i AES (Advanced Encryption Standard)are provided with the Xirrus Array. In addition, the use of an embedded RADIUSserver (or 802.1x with an external RADIUS server) ensures user authentication—multiple Arrays can authenticate to the optional XM-3300 ensuring onlyauthorized Xirrus Wireless LAN Arrays become part of the wireless network.Rogue AP detection and site monitoring is performed in the background by theArray automatically.
Wireless LAN ArrayIntroduction 7Deployment FlexibilityXirrus’ unique multi-radio architecture generates 360 degrees of sectored high-gain 802.11a/b/g coverage that provides extended range and the highest possibledata rates for a large volume of clients. Each sector can be controlledautomatically or manually, creating a pattern of wireless coverage perfectlytailored to individual customer needs. For example:Figure 3. Wireless Coverage PatternsFigure 2 depicts the following two scenarios:zFull pattern coverageAll radios are activated with coverage spanning 360 degrees. If withinrange, clients will always receive coverage regardless of their geographicposition relative to the Array.zPartial pattern coverageIf desired, the Xirrus Array can be deployed close to an exterior wall. Inthis case, half of all available radios have been deactivated to preventredundant signals from “bleeding” beyond the site’s perimeter wall. Thisconfiguration may also be used in those cases where you want to restrictwireless coverage to selected areas of the building’s interior.outside wall
Wireless LAN Array8 IntroductionRemote DC Power System (Optional)The Xirrus Remote DC Power System (XP-3100) provides distributed DC powerto your Array (DC version) deployments, eliminating the need to provide an ACpower outlet in close proximity to the unit(s).In the following example, DC power is supplied to four Xirrus Arrays whileutilizing only one AC power outlet.Figure 4. Remote DC Power DistributionAC Input to XP-3100DC Output to Xirrus ArraysXP-3100
Wireless LAN ArrayIntroduction 9Enterprise Class Management The Xirrus Array can be configured with its default RF settings, or the RF settingscan be customized using the Array’s embedded Web Management Interface(WMI). The WMI enables easy configuration and control from a graphicalconsole, along with a full compliment of troubleshooting tools, reports andstatistics.Figure 5. WMI: Array Status PageIn addition, a fully featured Command Line Interface (CLI) offers IT professionalsa familiar management and control environment. SNMP (Simple NetworkManagement Protocol) is also supported to allow management from an SNMPcompliant management tool, such as the optional Xirrus Wireless ManagementSystem.#For deployments of more than two Arrays, we recommend that you use theXirrus Wireless Management System (XM-3300). The XM-3300 offers a richset of features for fine control over large deployments.
Wireless LAN Array10 IntroductionKey Features and BenefitsThis section describes some of the key product features and the benefits you canexpect when deploying the Xirrus Array (the XS-3900 product is highlighted inthis section).High Capacity and High PerformanceThe XS-3900 easily handles time-sensitive traffic, such as voice, and can enablewireless connectivity for 1,024 users. The unit includes two Gigabit uplink portsfor connection to the wired network. A total of sixteen IAPs provides a maximumwireless capacity of 864 Mbps, which offers ample reserves for the high demandsof current and future applications. Of the sixteen IAPs, twelve operate in the802.11a mode and four operate in any combination of 802.11a, 802.11b and802.11g.If desired, IAP (radio) abg2 can also be configured in RF monitoring and rogueAP detection mode.Figure 6. Layout of IAPs (XS-3900)a1abg1a2a3a4abg2 (RF monitoring)a5a6a7abg3a8a9a10abg4a11a12Mode(s) IAP number
Wireless LAN ArrayIntroduction 11Extended CoverageOne XS-3900 solution enables you to replace up to sixteen access points (includesone omnidirectional IAP for monitoring the network). Fifteen IAP radios withintegrated directional antennas provide increased wireless range and enhanceddata rates in all directions. With a Xirrus Array deployed, far fewer access pointsare needed for your wireless network. Radio abg2 (see Figure 6) can be switchedto use an integrated omnidirectional antenna—for listening only—and can bededicated to the tasks of site monitoring and rogue AP detection.Figure 7. Antenna PatternsArrayArrayArray802.11a (directional) 802.11a/b/g (directional)802.11a/b/g (omnidirectional)
Wireless LAN Array12 IntroductionNon-Overlapping ChannelsComplete use of non-overlapping channels limits interference and deliversmaximum capacity. On the XS-3900, all 16 non-overlapping channels are fullyutilized across the 5GHz and 2.4GHz spectrums (up to 12 across the 5GHzspectrum and up to 3 across the 2.4GHz spectrum—typically, one radio is used asa dedicated RF monitor).Secure Wireless AccessMultiple layers of authentication and encryption ensure secure datatransmissions. The Xirrus Array is 802.11i compliant with encryption support for64 bit and 128 bit WEP, and WPA with TKIP and AES encryption.Authentication support is provided via 802.1x, including PEAP, EAP-TLS, andEAP-TTLS.Applications EnablementQoS (Quality of Service) functionality combined with true switch capabilitiesenable high density Voice over Wireless LAN deployments. Compliant with802.1p and 802.1q standards.SDMA OptimizationSDMA (Spatial Division Multiple Access) technology provides full 360° coveragewhile allowing independent channel and power output customization. Alsosupports fast inter-zone handoffs for time-sensitive applications and roamingsupport.Easy DeploymentThe Xirrus Wireless Management System (XM-3300) offers real time monitoringand management capabilities of the wireless network—ideal for the Enterprisemarket. It also allows you to import floor plans to help you plan yourdeployment. The Xirrus Wireless LAN Array chassis has a plenum rated, lockableand tamper resistant case.
Wireless LAN ArrayIntroduction 13Product Specifications (XS-3900 and XS-3700)Element SpecificationsNumber of Users Maximum of 64 associated users per radio1024 users per Array (XS-3900)512 users per Array (XS-3700)Physical Diameter: 18.65 inches (47.37 cm)Height: 3.87 inches (9.83 cm)Weight: 8lbs (3.63 kg)Environmental Operating Temperature:-10°C to 50°C0% to 90% relative humidity (non-condensing)Storage Temperature:-20°C to 60°C5% to 95% relative humidity (non-condensing)Maximum Operating Altitude:2000 meters (6561 feet)System 825 MHz CPU128MB RAM, expandable512MB system flash, expandableExpansion slot for future optionsElectrical Input Power (AC version): 90VAC to 265VAC at 47Hz to 63HzInput Power (DC version): 48VDCInterfaces Serial:1 x RS232 – RJ45 connectorEthernet Interfaces:2 x Gigabit 10/100/1000 Mbps w/failover1 x Fast Ethernet 10/100 MbpsStatus LEDs:System status, Ethernet, Radio
Wireless LAN Array14 IntroductionManagement Web-based HTTPSSNMP v3CLI via SSHv2 or TelnetFTPTFTPSerialProprietaryXirrus Wireless Management SystemSyslog reporting for alerts/alarmsNetworking DHCP client, DHCP server, NTP clientRFCVLAN Support 802.1Q, P VLANSupports up to 16 VLANsMultiple SSID SupportAllows up to 16 separate SSIDs to be defined with map security, VLAN and QoS settings for each SSIDPerformance Client Load BalancingAutomatic load balancing between system radiosQuality of Service:802.1P wired traffic prioritizationWireless packet prioritizationMAP CoS to TCIDFair queuing of downstream trafficElement Specifications
Wireless LAN ArrayIntroduction 15Security Wireless Security:WEP 40bit/128bit encryptionWPA with TKIP and AES encryptionMisappropriated APs automatically reset to factory defaults (requires the Xirrus Wireless Management System)Rogue AP detection, with alerts and classificationUser and System Authentication:WPA Pre-Shared Key authenticationEmbedded RADIUS Server802.1x EAP-TLS802.1x EAP-TTLS802.1x PEAPExternal RADIUS serversAuthentication of Xirrus Arrays to the Xirrus Management System (XM-3300)Element Specifications
Wireless LAN Array16 IntroductionWireless Number of Radios:XS-3900: 12 x 802.11a radios4 x 802.11a/b/g radiosXS-3700: 4 x 802.11a radios4 x 802.11a/b/g radiosWireless Standards:802.11a/b/g and g-only mode802.11e (draft), 802.11iChannel Selection:ManualAutomaticFrequency Bands:11a: 5.15-5.25 GHz (UNII 1)11a: 5.15-5.25 GHz (TELEC)11a: 5.25-5.35 GHz (UNII 2)11a: 5.470-5.725 (ETSI)11a: 5.725-5825 GHz (UNII 3)11b/g: 2.412-2.462 GHz (FCC)11b/g: 2.412-2.472 GHz (ETSI)11b/g: 2.412-2.484 GHz (TELEC)Antenna:Internal 6 dBi sectorized antennaExternal RP-TNC connectorRadio Approvals:FCC (United States)EN 301.893 (Europe)Compliance UL / cUL 60950 and EN 60950FCC Part 15.107 and 15109, Class AEN 301.489 (Europe)Warranty One year (hardware), 90 day (software)Element Specifications
Wireless LAN ArrayIntroduction 17Product Specifications (XS-3500)Element SpecificationsNumber of Users Maximum of 64 associated users per radio (256 users per Array). Recommended number of typical users per Array is 20.Physical Diameter: 12.58 inches (31.95 cm)Height: 2.58 inches (6.55 cm)Weight: 4lbs (1.81 kg)Environmental Operating Temperature:-10°C to 50°C0% to 90% relative humidity (non-condensing)Storage Temperature:-20°C to 60°C5% to 95% relative humidity (non-condensing)Maximum Operating Altitude:2000 meters (6561 feet)System 825 MHz CPU128MB RAM, expandable512MB system flash, expandableExpansion slot for future optionsElectrical Input Power (AC version): 90VAC to 265VAC at 47Hz to 63HzInput Power (DC version): 48VDCInterfaces Serial:1 x RS232 – RJ45 connectorEthernet Interfaces:1 x Gigabit 10/100/1000 Mbps w/failoverStatus LEDs:System status, Ethernet, Radio
Wireless LAN Array18 IntroductionManagement Web-based HTTPSSNMP v3CLI via SSHv2 or TelnetFTPTFTPSerialProprietaryXirrus Wireless Management SystemSyslog reporting for alerts/alarmsNetworking DHCP client, DHCP server, NTP clientRFCVLAN Support 802.1Q, P VLANSupports up to 16 VLANsMultiple SSID SupportAllows up to 16 separate SSIDs to be defined with map security, VLAN and QoS settings for each SSIDPerformance Client Load BalancingAutomatic load balancing between system radiosQuality of Service:802.1P wired traffic prioritizationWireless packet prioritizationMAP CoS to TCIDFair queuing of downstream trafficElement Specifications
Wireless LAN ArrayIntroduction 19Security Wireless Security:WEP 40bit/128bit encryptionWPA with TKIP and AES encryptionMisappropriated APs automatically reset to factory defaults (requires the Xirrus Wireless Management System)Rogue AP detection, with alerts and classificationUser and System Authentication:WPA Pre-Shared Key authenticationEmbedded RADIUS Server802.1x EAP-TLS802.1x EAP-TTLS802.1x PEAPExternal RADIUS serversAuthentication of Xirrus Arrays to the Xirrus Management System (XM-3300)Element Specifications
Wireless LAN Array20 IntroductionWireless Number of Radios:4 x 802.11a/b/g radiosWireless Standards:802.11a/b/g and g-only mode802.11e (draft), 802.11iChannel Selection:ManualAutomaticFrequency Bands:11a: 5.15-5.25 GHz (UNII 1)11a: 5.15-5.25 GHz (TELEC)11a: 5.25-5.35 GHz (UNII 2)11a: 5.470-5.725 (ETSI)11a: 5.725-5825 GHz (UNII 3)11b/g: 2.412-2.462 GHz (FCC)11b/g: 2.412-2.472 GHz (ETSI)11b/g: 2.412-2.484 GHz (TELEC)Antenna:4 internal 3 dBi 180° 802.11b/g sectorized antennas1 internal 2 dBi 360° omni-directional antennaExternal RP-TNC connectorRadio Approvals:FCC (United States)EN 301.893 (Europe)Compliance UL / cUL 60950 and EN 60950FCC Part 15.107 and 15109, Class AEN 301.489 (Europe)Warranty One year (hardware), 90 day (software)Element Specifications
Wireless LAN ArrayInstalling the Xirrus Array 21Installing the Xirrus ArrayThis chapter defines the prerequisites for installing the Xirrus Array and providesinstructions to help you complete a successful installation. Section headings forthis chapter include:z“Installation Prerequisites” on page 21z“Planning Your Installation” on page 24z“Installation Workflow” on page 39z“Unpacking the Xirrus Array” on page 40z“Installing Your Xirrus Wireless LAN Array” on page 41z“Powering Up the Xirrus Wireless LAN Array” on page 51z“Establishing Communication with the Array” on page 53z“Performing the Express Setup Procedure” on page 54Installation PrerequisitesYour Xirrus Array deployment requires the presence of hardware and services inthe host wired/wireless network, including:zDedicated AC power outletUnless you are using the Xirrus Remote DC Power System (XP-3100) withthe DC version of the Xirrus Array, you need a dedicated power outlet tosupply AC power to each unit deployed at the site. If you are using theoptional XP-3100, then DC power is supplied to all units and only one ACoutlet is required for the XP-3100.zEthernet port (read notes)You need at least one 10/100/1000 BaseT port to establish wired GigabitEthernet connectivity (via the product’s Gigabit 1 or Gigabit 2 port) andone 10/100 BaseT port (if desired) for product management.!The Array’s Ethernet ports should be plugged into an Ethernet switch, notan Ethernet hub—if a hub is used, we recommend that you connect onlyone Ethernet port.
Wireless LAN Array22 Installing the Xirrus ArrayzSecure Shell (SSH) utilityTo establish secure remote command line access to the Array, you need aSecure Shell (SSH) utility, such as PuTTY.zSecure Web browserEither Internet Explorer (version 6.0 or higher), Netscape Navigator(version 7.0 or higher), or Mozilla Firefox (version 1.01 or higher) and itmust be available on the same subnet as the Array. A secure Web browseris required for Web-based management of the Array.zSerial connection capabilityTo connect directly to the console port on the Array, your computer mustbe equipped with a male 9-pin serial port and terminal emulationsoftware (for example, HyperTerminal).Use the following settings when establishing a serial connection:!The Gigabit1 Ethernet interface is the primary port for both data andmanagement traffic. If a single Ethernet connection is used, it must beconnected to the Gigabit1 Ethernet interface.The 10/100 Ethernet Port can be used for managing the Array, and willonly bridge management traffic. See also, “Port Failover Protection” onpage 33.Bits per second 115,200Data bits 8Parity NoneStop bits 1Flow control None
Wireless LAN ArrayInstalling the Xirrus Array 23Optional Network ComponentsThe following network components are optional.zDHCP serverTo distribute IP addresses and ancillary information to your Xirrus Array.zXirrus Wireless Management System (XM-3300)The optional XM-3300 offers powerful management features for small orlarge Xirrus Array deployments.zXirrus Remote DC Power System (XP-3100)The optional XP-3100 provides distributed DC power to multiple Arrays,eliminating the need to run dedicated AC power to each unit andfacilitating backup power when connected via a UPS.zExternal RADIUS serverAlthough your Array comes with an embedded RADIUS server, for802.1x authentication in large deployments you may want to add anexternal RADIUS server.Client RequirementsThe Xirrus Array should only be used with Wi-Fi certified client devices.
Wireless LAN Array24 Installing the Xirrus ArrayPlanning Your InstallationThis section provides guidelines and examples to help you plan your XirrusArray deployment to achieve the best overall coverage and performance. Werecommend you conduct a site survey to determine the best location and settingsfor each Array you install.General Deployment ConsiderationsThe Xirrus Array’s unique multi-radio architecture generates 360 degrees ofsectored high-gain 802.11a/b/g coverage that provides extended range. However,the number, thickness and location of walls, ceilings or other objects that thewireless signals must pass through may affect the range. Typical ranges varydepending on the types of materials and background RF (radio frequency) noiseat your location. To maximize wireless range, follow these basic guidelines:1. Keep the number of walls and ceilings between the Array and yourreceiving devices to a minimum—each wall or ceiling can reduce thewireless range from between 3 and 90 feet (1 to 30 meters). Position yourdevices so that the number of walls or ceilings is minimized.2. Be aware of the direct line between each device. For example, a wall thatis 1.5 feet thick (half a meter) at 90° is actually almost 3 feet thick (or 1meter) when viewed at a 45° angle. At an acute 2° degree angle the samewall is over 42 feet (or 14 meters) thick! For best reception, try to ensurethat your wireless devices are positioned so that signals will travelstraight through a wall or ceiling.Figure 8. Wall Thickness Considerations90° 45°1.5 feet< 3 feet> 42 feet2°
Wireless LAN ArrayInstalling the Xirrus Array 253. Building materials can make all the difference. For example, solid metaldoors or aluminum wall studs may adversely effect wireless signals. Tryto position wireless client devices so that the signal passes throughdrywall (between studs) or open doorways and not other materials.Coverage and Capacity PlanningThis section considers coverage and capacity for your deployment(s), includingplacement options, RF patterns and cell sizes, area calculations, roamingconsiderations, and channel allocations.PlacementUse the following guidelines when considering placement options:1. The best placement option for the Array is ceiling-mounted within anopen plan environment (cubicles rather than fixed walls).2. Keep the Array away from electrical devices or appliances that generateRF noise. Because the Array is generally mounted on ceilings, be aware ofits position relative to lighting (especially fluorescent lighting)—werecommend maintaining a distance of at least 3 to 6 feet (or 1 to 2 meters).3. If using multiple Arrays at the same location, we recommendmaintaining a distance of at least 100 feet between units.Figure 9. Unit Placementt100 ftt100 ftt100 ft
Wireless LAN Array26 Installing the Xirrus ArrayRF PatternsThe Xirrus Array allows you to control—automatically or manually—the patternof wireless coverage that best suits your deployment needs. You can choose tooperate with full coverage, half coverage, or custom coverage (by enabling ordisabling individual sectors).Full (Normal) CoverageIn normal operation, the Array provides a full 360 degrees of coverage.Figure 10. Full (Normal) CoverageHalf CoverageIf installing a unit close to an exterior wall, you can deactivate half of the radios toprevent redundant signals from “bleeding” beyond the wall and extendingservice into public areas. The same principle applies if you want to restrict serviceto an adjacent room within the site.Figure 11. Adjusting RF Patternsoutside wall
Wireless LAN ArrayInstalling the Xirrus Array 27Custom CoverageWhere there are highly reflective objects in close proximity to the Array, you canturn off specific radios to avoid interference and feedback.Figure 12. Custom CoverageCalculating AreasBefore we discuss cell sizes, it is useful to know how to calculate the area of acircle (because the Array radiates a full 360 degrees). The area of a circle is equalto pi (S) times the square of the radius, where pi is equal to 3.14. The followinggraphic calculates the area of a circle with a radius of 20 feet. Figure 13. Calculating the Area of a Circleobjectreflective20 ft3.14 x 202 = 1,256 sq ft
Wireless LAN Array28 Installing the Xirrus ArrayCapacity and Cell SizesCell sizes should be calculated based on the number of users, the applicationsbeing used (for example, data/video/voice), and the number of Arrays availableat the location. The capacity of a cell is defined as the minimum data rate desiredfor each sector multiplied by the total number of sectors being used.The following chart shows the maximum recommended cell sizes for each datarate.DesiredData Rate(Mbps)11a Cell Size 11b/g Cell SizeRadius(feet)Area(sq. feet)Radius(feet)Area(sq. feet)54 100 31,400 104 33,96248 185 107,466 183 105,15536 247 191,568 260 212,26424 278 242,672 283 251,47918 309 299,810 338 358,72612 339 360,852 364 416,0379 371 432,193 374 439,2116 402 507,437 390 477,59411 0 0 416 543,3965.5 0 0 437 649,2952 0 0 458 658,6591 0 0 468 687,735
Wireless LAN ArrayInstalling the Xirrus Array 29Sample 802.11a CellsThe following 802.11a sample cells illustrate the coverage area and minimumthroughput you can expect (per sector) based on the size of each cell. Notice howthe throughput increases as the cell size decreases, and vice versa.Figure 14. Sample 802.11a Cells68 ft98 ft165 ft54 Mbps per sector36 Mbps per sector18 Mbps per sector14,520 sq ft30,157 sq ft85,487 sq ft
Wireless LAN Array30 Installing the Xirrus ArrayFine Tuning Cell SizesAdjusting the transmit power allows you to fine tune cell sizes. There are threesettings—Large, Medium, or Small (the default is Large). If you are installingmany units in close proximity to each other, reduce the transmit power to avoidexcessive interference with other Arrays or installed APs. See also, “IAP Settings”on page 90.Figure 15. Transmit PowerRoaming ConsiderationsCells should overlap approximately 10 - 15% to accommodate client roaming.Figure 16. Overlapping CellsLargeMediumSmallROAMING10 - 15% overlap
Wireless LAN ArrayInstalling the Xirrus Array 31Allocating ChannelsBecause the Xirrus Array is a multi-channel device, allocating the best channels toradios is important if peak performance is to be maintained.Automatic Channel SelectionWe recommend that you allow the Array to make intelligent channel allocationdecisions automatically. In the automatic mode, channels are allocateddynamically, driven by changes in the environment.Manual Channel SelectionYou can manually assign channels on a per radio basis, though manual selectionis not recommended (and not necessary).Figure 17. Allocating Channels Manually#To avoid co-channel interference, do not select adjacent channels for radios thatare physically next to each other.Maintain channel separation
Wireless LAN Array32 Installing the Xirrus ArrayDeployment ExamplesThe following examples employ 802.11a cells, each offering minimumthroughputs of 54 Mbps, 36 Mbps, and 18 Mbps per sector respectively, andassume a floor plan covering a total area of about 60,000 square feet.Figure 18. Deployment Scenario (54 Mbps)—Per SectorFigure 19. Deployment Scenario (36 Mbps)—Per Sector
Wireless LAN ArrayInstalling the Xirrus Array 33Figure 20. Deployment Scenario (18 Mbps)—Per SectorFailover PlanningThis section discusses failover protection at the unit and port levels.Port Failover ProtectionTo ensure that service is continued in the event of a port failure, you can utilizethe Gigabit 1 and Gigabit 2 ports simultaneously.Figure 21. Port Failover ProtectionEthernet switchMultiple port connections
Wireless LAN Array34 Installing the Xirrus ArrayIn addition, the Array has full failover protection between the Gigabit 1 andGigabit 2 Ethernet ports (see following table).Switch Failover ProtectionTo ensure that service is continued in the event of a switch failure, you canconnect Arrays to more than one Ethernet switch (not a hub).Figure 22. Switch Failover ProtectionInterface BridgesData?BridgesManagement Traffic?Fails Over To: IP addressFast Ethernet No Yes None DHCP or staticGigabit 1 Yes Yes Gigabit 2 DHCP or staticGigabit 2 Yes Yes Gigabit 1 Assumes the IP address of Gigabit 1#Gigabit Ethernet connections must be on the same subnet.Ethernet switch Backup switchEthernet connections
Wireless LAN ArrayInstalling the Xirrus Array 35Power PlanningThis section discusses the AC and DC power options.AC PowerThe AC power option requires a direct connection between the Array and adedicated AC power outlet. The power cord is provided with the unit.Remote Distributed DC PowerTo deliver DC power to the Array, you must have the optional Xirrus Remote DCPower System (XP-3100) and a Xirrus Array that supports DC power—seeFigure 4 on page 8 . The XP-3100 provides DC power to multiple Arrays from asingle source, and requires only one AC power outlet.Depending on the type of cable used, Arrays can be located up to 1,000 feet fromthe XP-3100. In addition, the XP-3100 can be plugged into a UPS to prevent powerfailure to all Arrays in the network.Security PlanningThis section offers some useful guidelines for defining your preferred encryptionand authentication method. For additional information, go to the Security sectionof “Frequently Asked Questions” on page 222.Wireless EncryptionEncryption ensures that no user can decipher another user’s data transmittedover the airwaves. There are three encryption options available to you, including:zWEP-40bit or WEP-128bitBecause WEP is vulnerable to cracks, we recommend that you only usethis for legacy devices that cannot support a stronger encryption type.zWi-Fi Protected AccessThis is much more secure than WEP and uses TKIP for encryption.#When using CAT5 cable, DC power can be provided up to a distance of 300feet.
Wireless LAN Array36 Installing the Xirrus ArrayzWi-Fi Protected Access with AESThis is government-grade encryption—available on most new clientadapters—and uses the AES–CCM encryption mode (AdvancedEncryption Standard–Counter Mode).AuthenticationAuthentication ensures users are who they say they are, and occurs when usersattempt to join the wireless network and periodically there after. The followingauthentication methods are available with the XS-3900:zRADIUS 802.1x 802.1x uses a remote RADIUS server to authenticate large numbers ofclients, and can handle different authentication methods (EAP-TLS, EAP-TTLS EAP-PEAP).zXirrus internal RADIUS serverIncludes all the core functionality of a full RADIUS server built into theXirrus Array. Recommended for smaller numbers of users (about 100 orless).zPre-Shared KeyUses a pass-phrase or key that is manually distributed to all authorizedusers. The same passphrase is given to client devices and entered intoeach Array.zMAC Access Control Lists (ACLs)MAC access control lists provide a list of client adapter MAC addressesthat are allowed or denied access to the wireless network, and can beused in addition to any of the above authentication methods. ACLs aregood for embedded devices, like printers and bar-code scanners (thoughMAC addresses can be spoofed). The Xirrus Array supports 512 ACLentries.
Wireless LAN ArrayInstalling the Xirrus Array 37Network Management PlanningNetwork management can be performed using any of the following methods:zCommand Line Interface, using an SSH (Secure Shell) utility, like PuTTY.zWeb-based management, using the Array’s embedded Web ManagementInterface (WMI). This method provides configuration and basicmonitoring tools, and is good for small deployments (one or two units).zWeb-based management, using the optional Xirrus Wireless ManagementSystem (XM-3300). The XM-3300 is used for managing large Arraydeployments from a centralized Web-based interface and offers thefollowing features:Layer 3 appliance  Globally manage large numbers of Arrays Seamless view of the entire wireless network Easily configure large numbers of Arrays  Rogue AP monitoring Easily manage system-wide firmware updates  Monitor performance and trendsAggregation of alerts and alarms
Wireless LAN Array38 Installing the Xirrus ArrayDeployment SummaryThe following table summarizes your deployment options for small and largedeployments.FunctionNumber of Xirrus ArraysOne or Two Three or MorePower ACDC (with XP-3100)ACDC (with XP-3100)UPS backup(recommended)Failover Recommended Highly recommendedVLANs Optional Optional use,Can be used to put all APs on one VLAN or map to existing VLAN schemeEncryption WPA with TKIP (recommended)PSK or 802.1x WPA with AES (recommended)802.1x keyingAuthentication Internal RADIUS serverPre-Shared KeyExternal RADIUS serverManagement Internal WMIInternal CLIXM-3300XM-3300
Wireless LAN ArrayInstalling the Xirrus Array 39Installation WorkflowThis workflow illustrates the steps that are required to install and configure yourXirrus Array successfully. Review this flowchart before attempting to install theunit on a customer’s network.Figure 23. Installation WorkflowDetermine the number of Arrays neededChoose the location(s) for your Xirrus ArraysAC DCInstall the mounting plateConnect the cables and turn on the powerVerify that the Ethernet link and radio LEDs are functioning correctlyPerform the Express Setup procedureRun AC power and Ethernet cables Run DC power and Ethernet cablesAC or DC power?
Wireless LAN Array40 Installing the Xirrus ArrayUnpacking the Xirrus ArrayWhen you unpack your Xirrus Array, you will find the following items in thecarton:Item QuantityXirrus Wireless LAN Array 1AC power cord 1Console cable 1Mounting plate 1Mounting screws 4Tile grid mounting clamps 4Clamp nuts 4Mounting template 1CD-ROM containing:This User’s Guide in PDF formatEnd User License Agreement (EULA)README file1Quick Install Guide 1Registration Card 1
Wireless LAN ArrayInstalling the Xirrus Array 41Installing Your Xirrus Wireless LAN ArrayThis section provides instructions for installing your Xirrus Wireless LAN Array.Choosing a LocationBased on coverage, capacity and deployment examples discussed earlier in thischapter, choose a location for the Array that will provide the best results for yourneeds. The Xirrus Array was designed to be mounted on a ceiling where the unitis unobtrusive and wireless transmissions can travel unimpeded throughout openplan areas. Choose a location that is central to your users (see the followingdiagram for correct placement.Figure 24. Array PlacementWRONGCORRECTRORRERORRECWRONGGGOONRORONONRORON
Wireless LAN Array42 Installing the Xirrus ArrayWiring ConsiderationsUnless you are using the Xirrus Remote DC Power System (XP-3100) with the DCversion of the Array, an AC power outlet must be available to the Array (an ACpower cord is provided with each unit). If you are using the XP-3100 to distributeDC power to multiple Arrays, go to “Remote DC Power System (Optional)” onpage 8.Once you have determined the best location for your Xirrus Array, you must runcables to the location for the following services:PowerzDedicated AC powerzDC power (if using the XP-3100)NetworkzGigabit 1zGigabit 2 (optional, not available on the XS-3500)zFast Ethernet (optional, not available on the XS-3500)zSerial cable
Wireless LAN ArrayInstalling the Xirrus Array 43Important Notes About Network ConnectionsRead the following notes before making any network connections.Mounting the UnitMost offices have drop-down acoustical ceiling tiles set into a standard grid. TheXirrus Array has been designed to enable mounting to a tiled ceiling via amounting plate and clamps that attach to the grid. Once the mounting plate isattached, the Array simply rotates onto the plate (similar to a smoke detector).Once the unit is mounted it can be removed and re-attached easily, without theneed for tools or modifications to the original installation.This section assumes that you are mounting the Array to a tiled ceiling. If yourceiling is not tiled, the mounting plate can be attached directly to the ceiling withthe screws and anchors provided (without using the tile grid mounting clamps).!The Array’s Ethernet ports should be plugged into an Ethernet switch, not anEthernet hub—if a hub is used, we recommend that you connect only oneEthernet port.!The Gigabit1 Ethernet interface is the primary port for both data andmanagement traffic. If a single Ethernet connection is used, it must beconnected to the Gigabit1 Ethernet interface.The 10/100 Ethernet Port can be used for managing the Array, and will onlybridge management traffic. See also, “Port Failover Protection” on page 33.#When the unit’s IP address is unknown or a network connection has not beenestablished, the serial cable is used for connecting directly with the CommandLine Interface (CLI) via HyperTerminal. When a network connection isestablished, the Array can be managed from any of the available networkconnections, either Fast Ethernet, Gigabit 1 or Gigabit 2.
Wireless LAN Array44 Installing the Xirrus ArrayAttaching the T-Bar ClipsThe T-bar clips are used to create four mounting points on the ceiling tile grid forthe Array mounting plate. Use the mounting template (provided) to find thecorrect location for all four clamps. To attach the clamps, simply twist the clampsonto the grid and tighten the screw post with a screwdriver.Figure 25. Attaching the T-Bar ClipsCeiling tile gridT-bar clips (4 places)Tighten the screw postTemplate
Wireless LAN ArrayInstalling the Xirrus Array 45Installing the Mounting PlateIf necessary, orient the mounting plate (see “Attaching the T-Bar Clips” onpage 44) and locate the plate on the four screw posts. Secure the mounting plate tothe four clamps using the nuts provided. Once the mounting plate is secured, cutan access hole in the ceiling tile for the cables.Figure 26. Installing the Mounting Plate (XS-3900 shown)Tile gridMounting PlateCut an access hole here
Wireless LAN Array46 Installing the Xirrus ArrayConnecting the CablesFeed the power and Ethernet cables through the access hole in the tile and themounting plate (XS-3900), then connect the cables to the unit. See also, “WiringConsiderations” on page 42.Figure 27. Connecting the CablesWhen the cables are connected, turn on the power switch—before attaching theunit to the mounting plate (next step). Verify that the Ethernet link LED lights andthe LED boot sequence begins. The radio LEDs on the front of the unit willilluminate in rotation, indicating that the Xirrus Array software is loading and theunit is functioning correctly.
Wireless LAN ArrayInstalling the Xirrus Array 47Attaching the Array to the Mounting Plate (XS-3900)Align the port recess on the Array with the access hole in the mounting plate, thenconnect the Array with the lugs on the mounting plate (4 places) and turn theArray clockwise to lock the unit into place (similar to a smoke detector).Figure 28. Attaching the Unit (XS-3900)
Wireless LAN Array48 Installing the Xirrus ArrayAttaching the Array to the Mounting Plate (XS-3500)Align the XS-3500 Wireless LAN Array with the key post on the mounting plate,then turn the Array to the right to lock the unit into place at the 4 lugs—similar toa smoke detector.Figure 29. Attaching the Unit (XS-3500)Key postLugAlignment hole
Wireless LAN ArrayInstalling the Xirrus Array 49Securing the ArrayFor added security, there is a locking bracket incorporated into the mountingplate, which will accept a small luggage-style padlock (if desired). There is also aKensington lock slot located near the Ethernet ports. In addition, the mountingplate incorporates a positive locking tab that prevents the unit from beinginadvertently released.Figure 30. Securing the ArrayNow that the Array is physically installed, you must run the Express Setupprocedure from the unit’s Web Management Interface to enable the radios andestablish initial system configuration settings. Go to “Powering Up the XirrusWireless LAN Array” on page 51.Locking bracket
Wireless LAN Array50 Installing the Xirrus ArrayDismounting the ArrayTo dismount the Array, place your fingers so as to increase the space between theArray and the mounting plate at the positions indicated by the decals on themounting plate—these are aligned with IAPs (radios) abg1 and abg3, as indicatedon the clock-face of the Array.Figure 31. IAP Positions (XS-3900)a1abg1a2a3a4abg2a5a6a7abg3a8a9a10abg4a11a12
Wireless LAN ArrayInstalling the Xirrus Array 51Powering Up the Xirrus Wireless LAN ArrayWhen powering up, the Array follows a specific sequence of LED patternsshowing the boot progress, and following a successful boot will provide extensivestatus information. The normal boot sequence is as follows:1. The green status LED will light first, showing a steady flashing while theunit boots. In the event of a boot failure, this LED will change to flashingred.2. The Ethernet Link/Activity LEDs on the underside of the Array will lightfor those ports connected to the network.3. All IAP radio LEDs will light simultaneously.4. While the Array is booting, a sequential LED pattern will cycle throughall the radio LEDs.5. When the Array completes boot, the status LED will show a steady green,and all radio lights will show the current state of those radios.Figure 32. LED Locations (XS-3900)Status LEDIAP LEDs (x16)EthernetActivity LEDs
Wireless LAN Array52 Installing the Xirrus ArrayOnce the unit is fully booted the default IAP LED display will be as follows:zIAP radio LEDs that are enabled will show a steady orange for 802.11aradios, or green for 802.11b/g radios.zOnce a client associates with an individual IAP, that LED will show aslow flash (heartbeat) pattern.zWhen data is transmitted or received by an IAP, that IAP’s LED will flash.The rate of flashing changes with the number of packets sent or receivedper second—the LED will flash more quickly with a greater number ofpackets per second and more slowly with lower numbers of packets persecond.These settings may be altered or disabled entirely for diagnostic purposes or forpersonal preference. Changes are made via the Array’s Command Line Interfaceor the Web Management Interface—refer to “IAP LED Settings” on page 103.Figure 33. WMI: IAP LED Settings Page
Wireless LAN ArrayInstalling the Xirrus Array 53Establishing Communication with the ArrayThe Array can be configured through the Command Line Interface (CLI) or thegraphical Web Management Interface (WMI). You can use the CLI via the serialmanagement port, the Fast Ethernet port, or either of the Gigabit Ethernet ports.You can use the WMI via any of the Array’s Ethernet ports.Figure 34. Network Interface PortsUsing the Serial PortIf using the serial port to make your connection, use serial settings of 8 bits, noparity, 1 stop bit (8N1) and a speed setting of 115200 baud. Use thecommunication package of your choice.Using the Ethernet PortsIf the Array is booted and does not receive DHCP addresses on either the FastEthernet or Gigabit Ethernet ports, the Fast Ethernet port will default to an IPaddress of 10.0.0.1 and both Gigabit Ethernet ports will default to 10.0.1.1 and10.0.2.1 respectively. If the Array is connected to a network that provides DHCPaddresses, the IP address can be determined by the following two methods:1. Examine the DHCP tables on the server and find the addresses assignedto the Array (Xirrus MAC addresses begin with 000F7D).2. Query the Array using the CLI via the serial port. Use the show ethernetcommand to view the IP addresses assigned to each port.Logging InWhen logging in to the Array, use the default user name and password—thedefault user name is admin, and the default password is admin.SerialFast EthernetGigabit 1Gigabit 2
Wireless LAN Array54 Installing the Xirrus ArrayPerforming the Express Setup ProcedureThe Express Setup procedure allows you to establish global configuration settingsthat will enable basic Array functionality. Any changes you make on this pagewill affect all radios. When finished, click on the Apply button to apply the newsettings to this session, then click on the Save button to save your changes.Figure 35. WMI: Express Setup Page (Part 1)more ...
Wireless LAN ArrayInstalling the Xirrus Array 55Figure 36. WMI: Express Setup Page (Part 2)Procedure for Performing an Express Setup1. Host Name: Specify a unique host name for this Array. The host name isused to identify the Array on the network. Use a name that will bemeaningful within your network environment, up to 64 alphanumericcharacters.2. Location Information: Enter a brief but meaningful description thataccurately defines the physical location of the Array. In an environmentwhere multiple units are installed, clear definitions for their locations areimportant if you want to identify a specific unit.3. Admin Contact: Enter the name and contact information of the personwho is responsible for administering the Array at the designated location.4. Admin Email: Enter the email address of the admin contact you enteredin Step 3.5. Admin Phone: Enter the telephone number of the admin contact youentered in Step 3.6. Enable/Configure All IAPs: Click on the Execute button to enable andauto configure all IAPs (a message displays the countdown time—inseconds—to complete the auto-configuration task).... continued
Wireless LAN Array56 Installing the Xirrus Array7. Configure the Fast Ethernet (10/100 Megabit), Gigabit 1 and Gigabit 2network interfaces. The fields for each of these interfaces are the same,and include:a. Enable Interface: Choose Yes to enable this network interface, orchoose No to disable the interface.b. Allow Management on Interface: Choose Yes to allow managementof the Array via this network interface, or choose No to deny allmanagement privileges for this interface.c. Configuration Server Protocol: Choose DHCP to instruct the Arrayto use DHCP to assign IP addresses to the Array’s Ethernet interfaces,or choose Static IP if you intend to enter IP addresses manually. Ifyou choose the Static IP option, you must enter the followinginformation:zIP Address: Enter a valid IP address for this Array. To useany of the remote connections (Web, SNMP, or SSH), a validIP address must be used.zIP Subnet Mask: Enter a valid IP address for the subnetmask (the default is 255.255.255.0). The subnet mask definesthe number of IP addresses that are available on the routedsubnet where the Array is located.zDefault Gateway: Enter a valid IP address for the defaultgateway. This is the IP address of the router that the Arrayuses to forward data to other networks.8. SSID (Wireless Network Name): The SSID (Service Set Identifier) is aunique name that identifies a wireless network. All devices attempting toconnect to a specific WLAN must use the same SSID. The default for thisfield is “xirrus.”For additional information about SSIDs, go to the Multiple SSIDs sectionof “Frequently Asked Questions” on page 222.9. Wireless Security: Select the desired wireless security scheme (Open,WEP or WPA). Make your selection from the choices available in the pull-down list.
Wireless LAN ArrayInstalling the Xirrus Array 57OpenThis option offers no data encryption and is not recommended,though you might choose this option if clients are required to use a VPN connection through a secure SSH utility, like PuTTy.WEP (Wired Equivalent Privacy)An optional IEEE 802.11 function that offers frame transmission privacy similar to a wired network. WEP generates secret shared encryption keys that both source and destination stations can use to alter frame bits to avoid disclosure to eavesdroppers.WPA (Wi-Fi Protected Access)A Wi-Fi Alliance standard that contains a subset of the IEEE 802.11i standard, using TKIP or AES as an encryption method and 802.1X for authentication. WPA is the stronger of the two wireless security schemes.For more information about security, including a full review of allsecurity options and settings, go to “Security Management” on page 113.10. Wireless Key/Passphrase: Depending on the wireless security schemeyou selected, enter a unique WEP key or WPA passphrase.a. Confirm Key/Passphrase: If you entered a WEP key or WPApassphrase, confirm it here.11. New Admin Password: If desired, enter a new administration passwordfor managing this Array. Choose a password that is not obvious, and onethat you can remember. If you forget your password, you must reset theArray to its factory defaults so that the password is reset to admin (itsdefault setting).a. Confirm Admin Password: If you entered a new administrationpassword, confirm the new password here.#Security settings will only take effect if they are assigned to a specificSSID. Refer to “SSID” on page 107.
Wireless LAN Array58 Installing the Xirrus Array12. Adjust Time (hrs:min:sec): Check this box if you want to adjust thecurrent system time. When the box is checked, the time fields becomeactive. Enter the revised time (hours, minutes, seconds, am/pm) in thecorresponding fields. If you don’t want to adjust the current time, this boxshould be left unchecked (default).13. Adjust Date (day/month/year): Check this box if you want to adjust thecurrent system date. When the box is checked, the date fields becomeactive. Enter the revised date (day, month, year) in the correspondingfields. If you don’t want to adjust the current date, this box should be leftunchecked (default).14. Auto Adjust Daylight Savings: Check this box if you want the system toadjust for daylight savings automatically, otherwise leave this boxunchecked (default).15. Time Zone: Select a time zonefrom the choices available in thepull-down list.Figure 37. WMI: Time Zones
Wireless LAN ArrayInstalling the Xirrus Array 5916. Use NTP (IP Address): Check this box if you want to use an NTP(Network Time Protocol) server to synchronize the Array’s clock. Thisensures that syslog time-stamping is maintained across all units. Withoutan NTP server assigned (no universal clock), each Array will use its owninternal clock and stamp times accordingly, which may result indiscrepancies. When this box is checked, the NTP and NTP 2 IP addressfields become active. If you don’t want to use an NTP server, leave thisbox unchecked (default), otherwise enter the IP address or DNS name ofthe NTP server.Figure 38. Enabling the NTP Featurea. NTP 2 (IP Address): If you enabled the NTP option and the site is using a secondary NTP server, enter the IP address or DNS name of the secondary NTP server.17. Click on the Apply button to apply the new settings to this session18. Click on the Save button to save your changes (otherwise your newsettings will not take effect).This ends the Express Setup procedure.NTP enabled
Wireless LAN Array60 Installing the Xirrus ArrayInstalling the XS-3900 Wall Mount AssemblyThe wall mounting assembly is used to mount the XS-3900 Wireless LAN Arrayon a wall, instead of the traditional ceiling mount—where mounting the Array onthe ceiling may be impractical at your location.Kit ContentsThe Wall Mounting Assembly kit includes the following items:z8 x SNAPTOGGLE™ toggle bolts (for attaching the wall bracket to thewall)z4 x 1/4 inch bolt assemblies (for attaching the mounting plate to the wallbracket)zWall Mounting BracketTools RequiredzPower drillz1/2 inch (13mm) drill bitzCross head screwdriverz1/4 inch nut wrenchzPencilzLevel
Wireless LAN ArrayInstalling the Xirrus Array 61Mark the Wall Position1. Use the Wall Mounting Bracket as a template and mark the locations onthe wall for the mounting holes.Figure 39. Wall Mount—Marking the HolesWhen marking the holes, ensure that the mounting plate is level—youmay need assistance.#The bracket must be secured to the wall in at least 5 places, using a minimumof the top 3 holes and the 2 outside holes at the bottom. For maximum strength,use all 8 mounting points (8 toggle bolts are provided).Mark holes (at least 5 places)
Wireless LAN Array62 Installing the Xirrus ArrayInstall the SNAPTOGGLE™ Toggle Bolts2. At the locations you marked in Step 1, drill a 1/2 inch (13mm) hole (theremust be a minimum clearance behind the wall of 1 7/8 inches (48mm).3. (Refer to graphic A) Hold the metal channel flat alongside the plasticstraps and slide the channel through the hole.Figure 40. Installing the Toggle Bolts4. (Refer to graphic B) Hold the strap handle between your thumb andforefinger and pull towards you until the metal channel rests flushbehind the wall.To achieve the maximum shear holding capability for the toggle bolt, orient themetal channel so that the channel is vertical to the floor.Using your other hand, now slide the plastic cap along the straps until theflange of the cap is flush with wall.The straps provide a one-way ratcheting mechanism (similar to a cable tie).Ensure that the toggle bolt assembly is oriented correctly (vertical to the floor)before sliding the plastic cap along the straps.5. (Refer to graphic C) Break the straps at the wall, flush with the flange ofthe cap. The straps can be broken by pushing them from side-to-side andsimply snapping them off.ABC D
Wireless LAN ArrayInstalling the Xirrus Array 63Graphic D shows a cutaway example of how the toggle bolt is used tosecure an item to the wall (in our case, the item is the Wall MountingBracket—secured to the wall with a minimum of 5 toggle bolts.Do not attach the Wall Mounting Bracket to the wall at this time.Attach the Mounting Plate to the Wall Mounting BracketSecure the Wireless LAN Array’s mounting plate to the Wall MountingBracket (4 places)—tighten the 4 bolt assemblies to a torque of 10–12 lbf.ft(1.38–1.66 kgf.m). Do not overtighten the bolts.Figure 41. Attaching the Wall Mounting PlateAttach the Wall Mounting Bracket/Plate Assembly to the Wall6. Secure the Wall Mounting Bracket (with attached Mounting Plate) to thewall at the toggle bolt anchors you created in Steps 2 through 5—aminimum of 5 places.Mounting PlateSecure (x4 bolt assemblies)
Wireless LAN Array64 Installing the Xirrus ArrayMount the ArrayThe image opposite shows the orientation of the Wireless LAN Array whenmounted on a wall. It is not intended to show a fully installed Array.7. Mount the Wireless LAN Array to the Wall Mounting Bracket in the sameway that you would mount the Array to a ceiling mount (the procedure isidentical).Figure 42. Mounting the Array on a Wall
Wireless LAN ArrayThe Web Management Interface 65The Web Management InterfaceThis chapter provides an overview of the XS-3900’s embedded Web ManagementInterface (WMI), used for establishing your network’s configuration settings andwireless operating parameters.An OverviewThe WMI is an easy-to-use graphical interface to your Xirrus Array. It allows youto configure the product to suit your individual requirements and ensure that theunit functions efficiently and effectively.Figure 43. Web Management Interface
Wireless LAN Array66 The Web Management InterfaceContentThe content of the WMI has been organized by function and hierarchy, shownhere in list form. You can click on any item in the list to jump to the referenceddestination.Array StatusExpress SetupNetwork InterfacesNetwork SettingsNetwork StatisticsDHCP SettingsDNS SettingsIAP InterfacesIAP SettingsGlobal SettingsGlobal Settings .11aGlobal Settings .11bgIAP LED SettingsStatistics(Individual IAP Statistics)SSIDSSID ManagementSecuritySecurity ManagementRadius ServerRadius UserMAC Access ListAdmin ManagementManagement ControlRogue AP ListRogue Control ListStationsRSSIServicesTime SettingsSystem LogSNMPArray InfoToolsShow ConfigEvent LogLogout
Wireless LAN ArrayThe Web Management Interface 67StructureThe WMI has been designed with simplicity in mind, making navigation quickand easy. In the following example, you’ll see that pages are divided into left andright frames. The left frame contains configuration elements organized byfunction (for example, radio interfaces, security, etc.), and where these functionsare sub-divided there is an associated pull-down menu. Also included in the leftframe are three counters that provide a running total of messages generated bythe syslog subsystem during your session—organized into Critical,Warning andGeneral messages.Figure 44. WMI: FramesThe right frame contains the configuration parameters for the Array. This is whereyou input data (if you want to make changes) or review the Array’s current statusand activity.Left frame Right framePull-down menuMessage counters
Wireless LAN Array68 The Web Management InterfaceStatus BarBelow the configuration frames you will find a status bar containing informationabout this Array, including:zLocation—displays the location information assigned to the unit.zHost name—the host name assigned to this unit.zNetwork interface IP address—the IP address of the network interfacethat is currently being used.Also included in the status bar is a Print button and a Help button. Click on thePrint button to send a print file of the active page to your local printer, or click onthe Help button to go to the Array’s online help system.Figure 45. WMI: Status BarApplying Configuration ChangesWhen you have defined all your settings on any WMI configuration page, youmust click on the Apply button for the changes to take effect in the currentsession. Click on the Save button to write your changes (for future sessions).Character RestrictionsWhen inputting strings in the WMI (for example, assigning SSIDs, host name,password, etc.), use only common alphanumeric characters. Do not use any of thefollowing characters:&<>' “/ \Status informationPrint buttonHelp button
Wireless LAN ArrayConfiguring the Xirrus Array 69Configuring the Xirrus ArrayThis chapter covers configuration and management tasks using the product’sembedded Web Management Interface (WMI). It also includes a procedure forlogging in to the XS-3900/XS-3700/XS-3500 with your Web browser.Section headings for this chapter include:z“Logging In” on page 69z“Making Configuration Changes to the Array” on page 70Logging InUse this procedure to log in to the WMI via your Web browser.1. Establish a network connection and open your Web browser.2. Connect to the Wireless LAN Array via its default IP address (10.0.1.1) orvia a DHCP assigned IP address.3. To log in to the Array’s Web Management Interface, enter admin whenprompted for a user name and password.Figure 46. WMI: Logging In to the Wireless LAN Array
Wireless LAN Array70 Configuring the Xirrus ArrayMaking Configuration Changes to the ArrayThis section has been organized into functional areas that reflect the flow andcontent of the WMI. Configuration instructions to the Wireless LAN Arrayrequire you to input data in one or more of the following formats:zSpecifying data (for example, IP addresses, descriptions, etc.).zMaking selections from pull-down lists.zChoosing an option by clicking on a radio button (for example, on/off).zClicking on a check box to activate/deactivate a feature.zClicking on a button to confirm a command or apply your changes.Array StatusThis is a status only page that provides a snapshot of the global configurationsettings for all XS-3900/XS-3700/XS-3500 network interfaces and radios. Youmust go to the appropriate configuration page to make changes to any of thesettings displayed here (configuration changes cannot be made from this page).Figure 47. WMI: Array Status Page
Wireless LAN ArrayConfiguring the Xirrus Array 71The Array Status page is sub-divided into the Network Interface and IAPInterface (radio) sections and provides you with the following information:zAll devices: A listing of the available Network Interfaces and IAPs witheach item containing a link to the associated configuration page. Linkeditems are shown UNDERLINED. For example:Figure 48. Linked ItemszAll devices: The current status of each device, whether enabled ordisabled. Devices that are disabled are shown in RED. For example:Figure 49. WMI: Disabled Device (Partial View)zNetwork Interface devices:zThe Management column indicates whether the network interfacedevice is enabled or disabled. Network interfaces are enabled ordisabled on the Network Settings page.zThe Configuration column shows how each network interfaceobtains its IP address—either dynamically via DHCP or enteredmanually by you (static configuration) on the Network Settings page.These items are linkedDisabled devices are shown in RED
Wireless LAN Array72 Configuring the Xirrus ArrayzThe IP Address column shows the current IP address being used byeach network interface device.zIAP Interface devices:zThe Channel column shows on which channel each IAP (radio) isoperating. Channel selections are made on the IAP Settings pagefrom a pull-menu. To avoid co-channel interference, adjacent radiosshould not be using adjacent channels.zThe Cell Size column indicates which cell size setting is currentlyactive for each radio—either small, medium, large or manuallydefined by you. The cell size of a radio is a function of its transmitpower and determines the radio’s overall coverage. Cell sizes aredefined on the IAP Settings page. For additional information aboutcell sizes and the importance of planning for and defining theoptimum sizes for your Array, go to “Coverage and CapacityPlanning” on page 25.Figure 50. IAP CellszThe Associated Users column informs you how many users arecurrently associated with each radio. The high-capacity XS-3900 canhandle up to 64 concurrent users per individual IAP radio (1024 or960 users per Array when the monitor is enabled).
Wireless LAN ArrayConfiguring the Xirrus Array 73Express SetupThis page allows you to establish global configuration settings that will enablebasic Array functionality. Any changes you make on this page will affect allradios. When finished, click on the Apply button to apply the new settings to thissession, then click on the Save button to save your changes.Figure 51. WMI: Express Setup Page (Part 1)more ...
Wireless LAN Array74 Configuring the Xirrus ArrayFigure 52. WMI: Express Setup Page (Part 2)Procedure for Performing an Express Setup1. Host Name: Specify a unique host name for this Array. The host name isused to identify the Array on the network. Use a name that will bemeaningful within your network environment, up to 64 alphanumericcharacters.2. Location Information: Enter a brief but meaningful description thataccurately defines the physical location of the Array. In an environmentwhere multiple units are installed, clear definitions for their locations areimportant if you want to identify a specific unit.3. Admin Contact: Enter the name and contact information of the personwho is responsible for administering the Array at the designated location.4. Admin Email: Enter the email address of the admin contact you enteredin Step 3.5. Admin Phone: Enter the telephone number of the admin contact youentered in Step 3.6. Enable/Configure All IAPs: Click on the Execute button to enable andauto configure all IAPs (a message displays the countdown time—inseconds—to complete the auto-configuration task).... continued
Wireless LAN ArrayConfiguring the Xirrus Array 757. Configure the Fast Ethernet (10/100 Megabit), Gigabit 1 and Gigabit 2network interfaces. The fields for each of these interfaces are the same,and include:a. Enable Interface: Choose Yes to enable this network interface, orchoose No to disable the interface.b. Allow Management on Interface: Choose Yes to allow managementof the Array via this network interface, or choose No to deny allmanagement privileges for this interface.c. Configuration Server Protocol: Choose DHCP to instruct the Arrayto use DHCP to assign IP addresses to the Array’s Ethernet interfaces,or choose Static IP if you intend to enter IP addresses manually. Ifyou choose the Static IP option, you must enter the followinginformation:zIP Address: Enter a valid IP address for this Array. To useany of the remote connections (Web, SNMP, or SSH), a validIP address must be used.zIP Subnet Mask: Enter a valid IP address for the subnetmask (the default is 255.255.255.0). The subnet mask definesthe number of IP addresses that are available on the routedsubnet where the Array is located.zDefault Gateway: Enter a valid IP address for the defaultgateway. This is the IP address of the router that the Arrayuses to forward data to other networks.8. SSID (Wireless Network Name): The SSID (Service Set Identifier) is aunique name that identifies a wireless network. All devices attempting toconnect to a specific WLAN must use the same SSID. The default for thisfield is “xirrus.”For additional information about SSIDs, go to the Multiple SSIDs sectionof “Frequently Asked Questions” on page 222.
Wireless LAN Array76 Configuring the Xirrus Array9. Wireless Security: Select the desired wireless security scheme (Open,WEP or WPA). Make your selection from the choices available in the pull-down list.OpenThis option offers no data encryption and is not recommended,though you might choose this option if clients are required to use aVPN connection through a secure SSH utility, like PuTTy.WEP (Wired Equivalent Privacy)An optional IEEE 802.11 function that offers frame transmissionprivacy similar to a wired network. WEP generates secret sharedencryption keys that both source and destination stations can use toalter frame bits to avoid disclosure to eavesdroppers.WPA (Wi-Fi Protected Access)A Wi-Fi Alliance standard that contains a subset of the IEEE 802.11istandard, using TKIP or AES as an encryption method and 802.1X forauthentication. WPA is the stronger of the two wireless securityschemes.For more information about security, including a full review of allsecurity options and settings, go to“Security Management” on page 113.10. Wireless Key/Passphrase: Depending on the wireless security schemeyou selected, enter a unique WEP key or WPA passphrase.a. Confirm Key/Passphrase: If you entered a WEP key or WPApassphrase, confirm it here.11. New Admin Password: If desired, enter a new administration passwordfor managing this Array. Choose a password that is not obvious, and onethat you can remember. If you forget your password, you must reset theArray to its factory defaults so that the password is reset to admin (itsdefault setting).#Security settings will only take effect if they are assigned to a specificSSID. Refer to “SSID” on page 107.
Wireless LAN ArrayConfiguring the Xirrus Array 77a. Confirm Admin Password: If you entered a new administrationpassword, confirm the new password here.12. Adjust Time (hrs:min:sec): Check this box if you want to adjust thecurrent system time. When the box is checked, the time fields becomeactive. Enter the revised time (hours, minutes, seconds, am/pm) in thecorresponding fields. If you don’t want to adjust the current time, this boxshould be left unchecked (default).13. Adjust Date (day/month/year): Check this box if you want to adjust thecurrent system date. When the box is checked, the date fields becomeactive. Enter the revised date (day, month, year) in the correspondingfields. If you don’t want to adjust the current date, this box should be leftunchecked (default).14. Auto Adjust Daylight Savings: Check this box if you want the system toadjust for daylight savings automatically, otherwise leave this boxunchecked (default).15. Time Zone: Select a time zonefrom the choices available in thepull-down list.Figure 53. WMI: Time Zones
Wireless LAN Array78 Configuring the Xirrus Array16. Use NTP (IP Address): Check this box if you want to use an NTP(Network Time Protocol) server to synchronize the Array’s clock. Thisensures that syslog time-stamping is maintained across all units. Withoutan NTP server assigned (no universal clock), each Array will use its owninternal clock and stamp times accordingly, which may result indiscrepancies. When this box is checked, the NTP and NTP 2 IP addressfields become active. If you don’t want to use an NTP server, leave thisbox unchecked (default), otherwise enter the IP address or DNS name ofthe NTP server.Figure 54. Enabling the NTP Featurea. NTP 2 (IP Address): If you enabled the NTP option and the site isusing a secondary NTP server, enter the IP address or DNS name ofthe secondary NTP server.17. Click on the Apply button to apply the new settings to this session18. Click on the Save button to save your changes (otherwise your newsettings will not take effect).This ends the Express Setup procedure.NTP enabled
Wireless LAN ArrayConfiguring the Xirrus Array 79Network InterfacesThis is a status only page that provides a snapshot of the configuration settingscurrently established for the 10/100 Fast Ethernet interface and the 10/100/1000Gigabit 1 and Gigabit 2 interfaces. You must go to the appropriate configurationpage to make changes to any of the settings displayed here (configurationchanges cannot be made from this page). You can click on any item (underlined)in the Interface column to “jump” to the associated configuration page.Figure 55. WMI: Network Interfaces PageWMI pages that allow you to change or view configuration settings associatedwith the network interfaces include:z“Network Settings” on page 80.z“Network Statistics” on page 84.z“DHCP Settings” on page 85.z“DNS Settings” on page 87.
Wireless LAN Array80 Configuring the Xirrus ArrayNetwork SettingsThis page allows you to establish configuration settings for the 10/100 FastEthernet interface and the 10/100/1000 Gigabit 1 and Gigabit 2 interfaces.When finished, click on the Apply button to apply the new settings to thissession, then click on the Save button to save your changes.Figure 56. WMI: Network Settings Page (Part 1)#Gigabit 2 settings will “mirror” Gigabit 1 settings (except for MACaddresses) and cannot be configured separately.more ...
Wireless LAN ArrayConfiguring the Xirrus Array 81Figure 57. WMI: Network Settings Page (Part 2)Network Interface PortsThe following diagram shows the location of each network interface port on theunderside of the Array.Figure 58. Network Interface Ports... continuedSerialFast EthernetGigabit 1Gigabit 2
Wireless LAN Array82 Configuring the Xirrus ArrayProcedure for Configuring the Network Interfaces1. Configure the Fast Ethernet,Gigabit 1 and Gigabit 2 network interfaces.The fields for each of these interfaces are the same, and include:a. Enable Interface: Choose Yes to enable this network interface (FastEthernet, Gigabit 1 or Gigabit 2), or choose No to disable theinterface.b. Allow Management on Interface: Choose Yes to allow managementof this Array via the selected network interface, or choose No to denyall management privileges for this interface.c. Auto Negotiate: This feature allows the Array to negotiate the besttransmission rates automatically. Choose Yes to enable this feature, orchoose No to disable this feature—the default is enabled. If youdisable the Auto Negotiate feature, you must define the Duplex andSpeed options manually (otherwise these options are not available).zDuplex: Full-duplex refers to the transmission of data in twodirections simultaneously (for example, a telephone is a full-duplex device because both parties can talk and be heard atthe same time). In contrast, half-duplex allows datatransmission in one direction at a time only (for example, awalkie-talkie is a half-duplex device because it allows onlyone party to talk at any one time). If the Auto-Negotiatefeature is disabled, you can manually choose Half or Fullduplex for your data transmission preference.zSpeed: If the Auto-Negotiate feature is disabled, you canmanually choose the desired data transmission speed fromthe pull-down list, either Fast Ethernet or Gigabit.d. MTU Size: Specify the MTU (Maximum Transmission Unit) size.When you specify the MTU, you are defining—in bytes—the largestphysical packet size that the network can transmit. Any messageslarger than the MTU that you specify here are divided into smallerpackets before being sent. The default is 1504 bytes.
Wireless LAN ArrayConfiguring the Xirrus Array 83e. Configuration Server Protocol: Choose DHCP to instruct the Arrayto use DHCP when assigning IP addresses to the Array, or chooseStatic IP if you intend to enter IP addresses manually.zIP Address: If you selected the Static IP option, enter a validIP address for the Array. To use any of the remoteconnections (Web, SNMP, or SSH), a valid IP address must beestablished.zIP Subnet Mask: If you selected the Static IP option, enter avalid IP address for the subnet mask (the default for Class Cis 255.255.255.0). The subnet mask defines the number of IPaddresses that are available on the routed subnet where theArray is located.zDefault Gateway: If you selected the Static IP option, enter avalid IP address for the default gateway. This is the IPaddress of the router that the Array uses to transmit data toother networks.2. Click on the Apply button to apply the new settings to this session.3. Click on the Save button to save your changes (otherwise your newsettings will not take effect).
Wireless LAN Array84 Configuring the Xirrus ArrayNetwork StatisticsThis is a status only page that allows you to review statistical data associated witheach network interface and its activity. You can Refresh the data (update the pagewith the latest information) or Clear the data (reset all content to zero and begincounting again) at any time by clicking on the appropriate button. If you areexperiencing problems, you may also want to print this page for your records.Figure 59. WMI: Network Statistics Page
Wireless LAN ArrayConfiguring the Xirrus Array 85DHCP SettingsThis page allows you to enable/disable DHCP (Dynamic Host ConfigurationProtocol) server functionality. DHCP allows the Array to provide wireless clientswith IP addresses and other networking information. The DHCP server will notprovide DHCP services to the wired side of the network.If you enable the DHCP server, you need to define the DHCP lease time (defaultand maximum) and establish the IP address range that the DHCP server can use.When finished, click on the Apply button to apply the new settings to thissession, then click on the Save button to save your changes.Figure 60. WMI: DHCP Settings Page
Wireless LAN Array86 Configuring the Xirrus ArrayProcedure for Configuring the DHCP Server1. Enable DHCP Server: Choose Yes to enable DHCP services, or chooseNo to disable DHCP services.2. Default Lease (seconds): This field defines the default DHCP lease time(in seconds). The factory default is 300 seconds, but you can change thedefault at any time.3. Maximum Lease (seconds): Enter a value (in seconds) to define themaximum allowable DHCP lease time. The default is 300 seconds.4. Starting IP Range: Enter an IP address to define the start of the IP rangethat will be used by the DHCP server. The default is 192.168.1.100.5. End IP Range: Enter an IP address to define the end of the IP range thatwill be used by the DHCP server. The DHCP server will only use IPaddresses that fall between the start and end range that you define on thispage. The default is 192.168.1.200.6. Click on the Apply button to apply the new settings to this session.7. Click on the Save button to save your changes (otherwise your newsettings will not take effect).
Wireless LAN ArrayConfiguring the Xirrus Array 87DNS SettingsThis page allows you to establish your DNS (Domain Name System) settings. Atleast one DNS server must be set up if you want to offer clients associating withthe Array the ability to use meaningful host names instead of numerical IPaddresses. When finished, click on the Apply button to apply the new settings tothis session, then click on the Save button to save your changes.Figure 61. WMI: DNS Settings Page
Wireless LAN Array88 Configuring the Xirrus ArrayProcedure for Configuring DNS Servers1. DNS Host Name: Enter a valid DNS host name.2. DNS Domain: Enter the DNS domain name.3. DNS Server 1: Enter the IP address of the primary DNS server.4. DNS Server 2: Enter the IP address of the secondary DNS server.5. DNS Server 3: Enter the IP address of the tertiary DNS server.6. Click on the Apply button to apply the new settings to this session.7. Click on the Save button to save your changes (otherwise your newsettings will not take effect).
Wireless LAN ArrayConfiguring the Xirrus Array 89IAP InterfacesThis is a status only page that allows you to review configuration data associatedwith each Integrated Access Point (radio). It includes a list of which IAP radiosare enabled, the channel that each radio is currently using, cell sizes, and howmany users are currently associated with each radio. There are no configurationoptions available on this page, but if you are experiencing problems or simplyreviewing the radio assignments, you may want to print this page for yourrecords.You can click on any item in the IAP column to “jump” to the associatedconfiguration page.Figure 62. WMI: IAP Interfaces Page
Wireless LAN Array90 Configuring the Xirrus ArrayIAP SettingsThis page allows you to enable/disable Integrated Access Points (radios), definethe wireless mode for each radio, specify the channel to be used and the cell sizefor each radio, establish transmit/receive parameters, and select antennas. Whenfinished, click on the Apply button to apply the new settings to this session, thenclick on the Save button to save your changes. To see a diagram of the layout andnaming of radios, go to Figure 6 on page 10.Figure 63. WMI: IAP Settings Page
Wireless LAN ArrayConfiguring the Xirrus Array 91Procedure for Auto Configuring IAPs (Radios)You can auto-configure radios by clicking on the Auto Configure button on therelevant WMI page (auto configuration only applies to enabled radios):zFor all radios, go to the “Global Settings” on page 93.zFor all 802.11a radios, go to the “Global Settings .11a” on page 96.zFor all 802.11b/g radios, go to the “Global Settings .11bg” on page 99.Procedure for Manually Configuring IAPs (Radios)1. In the Enabled column, check the box of a corresponding radio to enablethe radio, or uncheck the box if you want to disable the radio.2. In the Mode column, select the wireless mode for thisradio from the choices available in the pull-downmenu (either .11a or .11b/g).3. In the Channel column, select the channel you wantthis radio to use from the channels available in thepull-down list.The sample pull-down list shown here is for the abg2radio with its mode set to .11b/g. Any channelsappearing in this pull-down list that are shown inRED are not recommended.4. In the Cell Size column, choose either Small,Medium, or Large to define the desired pre-configured cell size, or choose Manual to define thewireless cell size manually. If you choose Manual,you must specify the transmit and receive power—in dB—in the TxPower dB (transmit) and Rx dB (receive) fields.The number of users and their applications are major drivers ofbandwidth requirements. The network architect must account for thenumber of users within the Array’s cell diameter.
Wireless LAN Array92 Configuring the Xirrus ArrayIn a large office, or if multiple Arrays are in use, you should choose Smallcells to achieve a higher data rate, since walls and other objects will notdefine the cells naturally.For additional information about cell sizes, go to “Coverage and CapacityPlanning” on page 25.5. In the Antenna Select column, choose the antenna you want this radio touse from the pull-down list. The list of available antennas will be different(or no choices will be available), depending on the wireless mode youselected for the radio.The sample pull-down list shown here is foran 11a radio. In cases where the configurationof the Array limits the antenna choice (forexample, if no external antenna is available),the Antenna Select column is greyed out.6. An optional Description field is provided for each IAP to record specificnotes. To enter a description, double click in the field and enter your textin the pop-up requestor. Figure 64. Entering a Description7. Click on the Apply button to apply the new settings to this session.8. Click on the Save button to save your changes (otherwise your newsettings will not take effect at the next reboot).
Wireless LAN ArrayConfiguring the Xirrus Array 93Global SettingsThis page allows you to establish global IAP (radio) settings. Global IAP settingsinclude enabling or disabling all radios (regardless of their operating mode), auto-configuring channel allocations, enabling or disabling the Beacon World Modeand EDCF, specifying the short and long retry limits, and defining the beaconinterval and DTIM period. Changes you make on this page are applied to all IAPs(radios), without exception.Figure 65. WMI: Global Settings Page
Wireless LAN Array94 Configuring the Xirrus ArrayProcedure for Configuring Global IAP Settings1. IAP Status: Click on the Enable All IAPs button to enable all radios forthis Array, or click on the Disable All IAPs button to disable all radios.2. Channel Configuration: Click on the Auto Configure button to instructthe Array to determine the best channel allocation settings for each radioand select the channel automatically, based on changes in theenvironment. This is the recommended method for channel allocations.3. Auto Channel Configuration Mode: This option allows you to instructthe Array to auto-configure channel selection for each enabled IAP whenthe Array is powered up. Choose On Array PowerUp to enable thisfeature, or choose Disabled to disable this feature.4. Auto Configure on Time: This option allows you to instruct the Array toauto-configure channel selection for each enabled IAP at a time youspecify here (in hours and minutes, using the format: hh:mm). Leave thisfield blank unless you want to specify a time at which the auto-configuration utility is initiated.5. Short Retry Limit: This attribute indicates the maximum number oftransmission attempts for a frame, the length of which is less than orequal to the RTS Threshold, before a failure condition is indicated. Thedefault value is 7. Enter a new value (1 to 128) in the Short Retry Limitfield if you want to increase or decrease this attribute.6. Long Retry Limit: This attribute indicates the maximum number oftransmission attempts for a frame, the length of which is greater than theRTS Threshold, before a failure condition is indicated. The default valueis 4. Enter a new value (1 to 128) in the Long Retry Limit field if you wantto increase or decrease this attribute.7. Beacon Interval: When the XS-3900 sends a beacon, it includes with it abeacon interval, which specifies the period of time before it will send thebeacon again. Enter the desired value in the Beacon Interval field,between 20 and 1000. The value you enter here is applied to all radios.
Wireless LAN ArrayConfiguring the Xirrus Array 958. DTIM Period: A DTIM (Delivery Traffic Indication Message) is a signalsent as part of a beacon by the Array to a client device in sleep mode,alerting the device to a packet awaiting delivery. Enter the desired valuein the DTIM Period field, between 1 and 255. The value you enter here isapplied to all radios.9. Station Re-Authentication Period: This option allows you to specify atime (in seconds) for the duration of station reauthentications.10. Station Timeout Period: Specify a time (in seconds) in this field to definethe timeout period for station associations.11. Max Station Association per IAP: This option allows you to define howmany station associations are allowed per IAP (up to 64 stations per IAP).12. Block Intra-Station Traffic: This option allows you to block or allowtraffic between wireless clients that are associated to the Array.13. Load Balancing: This option enables or disables active load balancingbetween the Array IAPs.14. Click on the Apply button to apply the new settings to this session.15. Click on the Save button to save your changes (otherwise your newsettings will not take effect).
Wireless LAN Array96 Configuring the Xirrus ArrayGlobal Settings .11aThis page allows you to establish global 802.11a IAP (radio) settings. Thesesettings include defining which 802.11a data rates are supported, enabling ordisabling all 802.11a radios, auto-configuration of channel allocations for all802.11a radios, and specifying the fragmentation and RTS thresholds for all802.11a radios.Figure 66. WMI: Global Settings .11a Page
Wireless LAN ArrayConfiguring the Xirrus Array 97Procedure for Configuring Global 802.11a IAP Settings1. 802.11a Data Rates: The Array allows you to define which data rates aresupported for all 802.11a radios.Figure 67. Specifying 802.11a Data RatesSelect (or deselect) data rates by clicking in the corresponding Supportedand Basic data rate check boxes.zBasic Rate—a wireless station (client) must support this rate inorder to associate.zSupported Rate—the Array will use this data rate fortransmissions to clients.2. Optimize Data Rates: The Xirrus Wireless LAN Array can optimize your802.11a data rates automatically, based on range or throughput. Click onthe Range button to optimize data rates based on range, or click on theThroughput button to optimize data rates based on throughput. TheRestore Default Rates button will take you back to the factory defaultrate settings.3. 802.11a IAP Status: Click on the Enable 802.11a IAPs button to enable all802.11a radios for this Array, or click on the Disable 802.11a IAPs buttonto disable all 802.11a radios.
Wireless LAN Array98 Configuring the Xirrus Array4. Channel Configuration: Click on the Auto Configure button to instructthe Array to determine the best channel allocation settings for each802.11a radio and select the channel automatically, based on changes inthe environment. This is the recommended method for 802.11a channelallocations.5. Set Cell Size: The Cell Size may be set globally for all 802.11a IAPs toLarge, Medium, or Small using a drop down menu. 6. Fragmentation Threshold: This is the maximum size for directed datapackets transmitted over the 802.11a radio. Larger frames fragment intoseveral packets, their maximum size defined by the value you enter here.Smaller fragmentation numbers can help to “squeeze” packets through innoisy environments. Enter the desired Fragmentation Threshold value inthis field, between 256 and 2346).7. RTS Threshold: The RTS (Request To Send) Threshold specifies thepacket size. Packets larger than the RTS threshold will use CTS/RTS priorto transmitting the packet—useful for larger packets to help ensure thesuccess of their transmission. Enter a value between 1 and 2347.8. Click on the Apply button to apply the new settings to this session.9. Click on the Save button to save your changes (otherwise your newsettings will not take effect).
Wireless LAN ArrayConfiguring the Xirrus Array 99Global Settings .11bgThis page allows you to establish global 802.11b/g IAP (radio) settings. Thesesettings include defining which 802.11b and 802.11g data rates are supported,enabling or disabling all 802.11b/g radios, auto-configuration of channelallocations for all 802.11b/g radios, and specifying the fragmentation and RTSthresholds for all 802.11b/g radios.Figure 68. WMI: Global Settings .11bg Page
Wireless LAN Array100 Configuring the Xirrus ArrayProcedure for Configuring Global 802.11b/g IAP Settings1. 802.11g Data Rates: The Array allows you to define which data rates aresupported for all 802.11g radios.Figure 69. Specifying 802.11g Data RatesSelect (or deselect) data rates by clicking in the corresponding Supportedand Basic data rate check boxes.zBasic Rate—a wireless station (client) must support this rate inorder to associate.zSupported Rate—the Array will use this data rate fortransmissions to clients.2. 802.11b Data Rates: This task is similar to Step 1, but these data ratesapply only to 802.11b radios.Figure 70. Specifying 802.11b Data Rates
Wireless LAN ArrayConfiguring the Xirrus Array 1013. Optimize Data Rates: The Xirrus Wireless LAN Array can optimize your802.11b/g data rates automatically, based on range or throughput. Clickon the Range button to optimize data rates based on range, or click on theThroughput button to optimize data rates based on throughput. TheRestore Default Rates button will take you back to the factory defaultrate settings.4. 802.11bg IAP Status: Click on the Enable 802.11b/g IAPs button to enableall 802.11b/g radios for this Array, or click on the Disable 802.11b/g IAPsbutton to disable all 802.11b/g radios.5. Channel Configuration: Click on the Auto Configure button to instructthe Array to determine the best channel allocation settings for each802.11b/g radio and select the channel automatically, based on changes inthe environment. This is the recommended method for 802.11b/g channelallocations.6. Set Cell Size: The Cell Size may be set globally for all 802.11a IAPs toLarge, Medium, or Small via a drop down menu.7. 802.11g Only: Select On if you want to restrict use to 802.11g mode only.In this mode, no 802.11b rates are transmitted. Also, stations that onlysupport 802.11b will not be able to associate.8. 802.11g Protection: Select Auto to provide automatic protection for all802.11g radios.9. 802.11g Slot: Select Auto to instruct the Array to manage the 802.11g slottimes automatically, or choose Short Only. Xirrus recommends usingAuto for this settings, especially if 802.11b devices are present.10. 802.11b Preamble: The preamble contains information that the Array andclient devices need when sending and receiving packets. All compliant802.11b systems have to support the long preamble (a short preambleimproves the efficiency of a network's throughput when transmittingspecial data, such as voice, VoIP (Voice-over IP) and streaming video.Select Auto to instruct the Array to manage the preamble (long and short)automatically, or choose Long Only.
Wireless LAN Array102 Configuring the Xirrus Array11. Fragmentation Threshold: This is the maximum size for directed datapackets transmitted over the 802.11b/g radio. Larger frames fragmentinto several packets, their maximum size defined by the value you enterhere. Enter the desired Fragmentation Threshold value in this field,between 256 and 2346).12. RTS Threshold: The RTS (Request To Send) Threshold specifies thepacket size. Packets larger than the RTS threshold will use CTS/RTS priorto transmitting the packet—useful for larger packets to help ensure thesuccess of their transmission. Enter a value between 1 and 2347.13. Click on the Apply button to apply the new settings to this session.14. Click on the Save button to save your changes (otherwise your newsettings will not take effect).
Wireless LAN ArrayConfiguring the Xirrus Array 103IAP LED SettingsThis page allows you to set up the Array’s IAP LEDs, including the assignment ofbehavior preferences.Figure 71. WMI: IAP LED Settings PageProcedure for Configuring the IAP LEDs1. LED State: This option determines which event triggers the LEDs, eitherwhen a radio is enabled or when a radio first associates with the network.Choose On Radio Enabled or On First Association, as desired.2. LED Blink Behavior: This option allows you to select when the IAP LEDsblink, based on the activities you check here. From the choices available,select one or more activities to trigger when the LEDs blink.3. Click on the Apply button to apply the new settings to this session, thenclick on the Save button to save your changes.
Wireless LAN Array104 Configuring the Xirrus ArrayStatisticsThis is a status only page that provides an overview of the statistical dataassociated with individual radios. For more detailed information about a specificradio, simply click on any radio in the left column, or go to the statistics page forthe desired radio (for example, Statistics IAP abg4). You can Refresh or Clear thedata on this page at any time by clicking on the appropriate button.Figure 72. WMI: Statistics Page
Wireless LAN ArrayConfiguring the Xirrus Array 105Statistics (for specific radios)These pages provide a detailed statistical summary of each radio’s performance,displayed either numerically or by percentage (your choice). The following imageshows an example from the XS-3700 product of the Statistics IAP a4 page (for thea4 radio).The default Statistics Type is NUMERIC, but you can change this toPERCENTAGE from the pull-down menu at the top of the page. In addition, youcan Refresh or Clear the data on this page at any time by clicking on theappropriate button.Figure 73. WMI: Statistics for IAP a4 Page (XS-3700)

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