Proxim 8550 Manual de usuario

following U.S. patents: 5,809,060; 6,075,812; 5,077,753; 5,231,634. This user’s guide and the

be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any

language in any form by any means without the written permission of Proxim, Incorporated.

Trademarks

Harmony, the Harmony logo, Proxim, and the Proxim logo are trademarks of Proxim, Inc. All

othertrademarksarethepropertyoftheirrespectiveowners.

Limited Warranty, Disclaimer, Limitation Of Liability

For a period of one (1) year from the date of purchase by the retail customer, Proxim warrants

the Harmony 802.11b Access Point Model 855x against defects in materials and workmanship.

Proxim will not honor this warranty if there has been any attempt to tamper with or remove the

product’s external foil label.

This warranty does not cover and Proxim will not be liable for any damage or failure caused by

misuse, abuse, acts of God, accidents, or other causes beyond Proxim’s control, or claim by

any entity other than the original purchaser.

If, after inspection, Proxim determines there is a defect, Proxim will repair or replace the

Access Point at no cost to you. To return defective merchandise to Proxim please call Proxim

TechnicalSupport1-408-731-2640toobtainaReturnMerchandiseAuthorization(RMA)number.

In no event shall Proxim, Incorporated be responsible or liable for any damages arising:

GFrom the use of the product

GFrom the loss of use, revenue or profit of the product

GAs a result of any event, circumstance, action, or abuse beyond the control of

Proxim,Incorporated

Whethersuchdamagesbedirect,indirect,consequential,special or otherwise and whether

such damages are incurred by the person to whom this warranty extends or a third party.

Harmony 802.11b Access Point Model 855x User’s Guide

Part#7360.0133

Rev. E

WarrantyReturnPolicy

If you have a problem with the Harmony 802.11b Access Point Model 855x, please call Proxim

Technical Support at 1-408-731-2640. Proxim Technical Support will assist with resolving any

technical difficulties you may have with your Proxim product.

After calling Proxim Technical Support, if your product is found to be defective, you may return

theproducttoProximafter obtaining anRMA(ReturnMerchandiseAuthorization)number.The

product must be returned in its original packaging. The RMA number should be clearly marked

on the outside of the box. Proxim cannot be held responsible for any product returned without

an RMA number, and no product will be accepted without an RMA number.

FCCWARNING

This equipment has been tested and found to comply with the limits for a Class B digital

device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable

protectionagainstharmfulinterferencein aresidentialinstallation. Thisequipmentgenerates,

uses, and can radiate radio frequency energy and, if not installed and used in accordance with

the instructions, may cause harmful interference to radio communications. However, there is no

guarantee that interference will not occur in a particular installation. If this equipment does

causeharmful interference to radio or televisionreception, which can be determined byturning

the equipment off and on, the user is encouraged to try to correct the interference by one or

moreofthe following measures:

GReorientorrelocatethereceivingantenna.

GIncreasetheseparationbetweentheequipmentandthe receiver.

GConnect the equipment into an outlet on a circuit different from that which the

receiver is connected.

GConsultthe dealer or an experienced radio/TVtechnicianforhelp.

Declaration of Conformity

DéclarationdeConformité

Konformitätserklärung

TheManufacturer: Proxim Europe B.V.

Le Constructeur:

Der Hersteller:

Address: Strawinskylaan3127

Addresse: 1077 ZX, P.O. Box 7067,

Addresse: 1007JBAmsterdam,TheNetherlands

DeclaresthattheProduct:

Déclare que le Produit:

Erklärt, dass das Produkt: Type: Harmony

Model: 8550AccessPoint

VariantModel: 8551AccessPoint

meetsthe essential requirementsaccording to article3 of thefollowing EC-Directive:

est conforme aux exigencies essentielles d’article 3 de la Directive CE:

die grundlegenden Anforderungen gemäâ Artikel 3 der nachstehenden EU-Richtlinie erfült:

Directive 1999/5/EC of the European Parliament and of the Council of 09

March1999 relating to Radio and telecommunications Terminal Equipment

(R&TTE), including the mutual recognition of their conformity.

Directive 1999/5/EC du Parlement Europeen et du Conseil du 09 mache 1999

concernant les radio et equipments terminaux de telecommunications, incluant la

reconnaissance mutuelle de leur conformite.

Richtlinie 1999/5/EG des Europäischen Parlaments und des Rates vom 09. März 1999

über Funkanlagen und Telekommunikationsendeinrichtungen und die gegenseitige

Anerkennung ihrer Konformität.

and that the following harmonized standards have been applied:

et que les standards marmonises suivants ont ete appliqués:

und dass die folgenden harmonisierten Normen angewandt wurden:

ETS 300328 / July 1997

ETS 300826 / November 1997

EN 60950 / August 1992

IEC 950 / 1991 Second Edition

Equipment Class Identifier

This Product is a Class-2 under the scope of the R&TTE. Be aware that France uses other

frequencies. This means that products bought elsewhere might cause problems in the above

mentinonedcountry(ies)andshouldbeavoided.

Amsterdam, 11May 2001

Placeand Dateof the declaration

Lieu et date de la declaration –Ort und Datum der Konformitätserklärung

NameandSignature

Nom et Signature –Name und Unterschrift

CarmeloS.Amarena

InternationalProductManager

Proxim, Inc. & Proxim Europe B.V.

Contents

1. Introduction..................................................................................................7

The Harmony Family .......................................................................................................................... 8

Harmony 802.11b Access Point Model Numbers ............................................................................... 9

The IEEE 802.11b Specification ...................................................................................................... 10

System Requirements........................................................................................................................ 11

The Product Package......................................................................................................................... 11

2.Installation..................................................................................................12

Installation Procedure ....................................................................................................................... 12

Mounting Option .............................................................................................................................. 14

LED Indicators .................................................................................................................................. 15

Power Requirements.......................................................................................................................... 17

3.Wireless Operation ....................................................................................18

AP Controller Dependence ............................................................................................................... 18

Independent Mode.......................................................................................................................... 19

Dependent Mode ............................................................................................................................ 21

Flexible Mode ................................................................................................................................ 24

Roaming Between Access Points...................................................................................................... 24

Roaming in Independent Mode .....................................................................................................25

Roaming in Dependent Mode ........................................................................................................ 26

Roaming Guidelines ....................................................................................................................... 28

4. Access Point Management .......................................................................30

Accessing the Access Point Management Tool ................................................................................ 30

AccessPoint’sIPAddress ............................................................................................................... 31

Rebooting an Access Point Via the Management Tool.................................................................... 33

5. Configuration Parameters.........................................................................34

Network ............................................................................................................................................. 36

UseDHCP ....................................................................................................................................... 36

IPAddress ....................................................................................................................................... 37

Subnet Mask ................................................................................................................................... 37

GatewayIPAddress ........................................................................................................................ 37

AP Controller Dependence ............................................................................................................. 37

Radio ................................................................................................................................................. 38

Channel........................................................................................................................................... 38

SSID ................................................................................................................................................ 39

Supported Clients ........................................................................................................................... 39

Supported Rates.............................................................................................................................. 39

RTS/CTS Threshold ....................................................................................................................... 40

Security ............................................................................................................................................. 41

WEP Encryption ............................................................................................................................. 41

WEPKey Size ................................................................................................................................. 42

Default Key ..................................................................................................................................... 42

WEPKeys ....................................................................................................................................... 43

SystemAccess ................................................................................................................................... 44

6. Status .........................................................................................................45

7.Statistics.....................................................................................................46

Radio Statistics ................................................................................................................................. 46

Ethernet Statistics ............................................................................................................................. 48

8. Performance Hints.....................................................................................49

Microwave Ovens ............................................................................................................................. 49

Range ................................................................................................................................................ 49

9. Troubleshooting ........................................................................................51

How to Obtain Help with Your LAN Installation ............................................................................. 51

LEDError Codes ............................................................................................................................... 51

Common Problems and Solutions..................................................................................................... 52

A. Parameters ................................................................................................55

Network ............................................................................................................................................. 55

Radio ................................................................................................................................................. 55

Security ............................................................................................................................................. 56

SystemAccess ................................................................................................................................... 56

B. IEEE 802.11b Direct Sequence Channels ...............................................57

C. Harmony 802.11b Access Point Specifications .....................................58

D. How to Reach Technical Support............................................................59

Index...............................................................................................................60

1. Introduction

Thank you for choosing Proxim’s Harmony 802.11b Access Point Model 855x, a

memberof Proxim’s Harmony wireless infrastructure family. The Harmony 802.11b

Access Point complies with the IEEE 802.11b wireless standard to provide mobile

clients with network connectivity at data rates of up to 11 Mbps.

The Harmony 802.11b Access Point can be used on its own or in conjunction with a

Harmony Access Point Controller. A stand-alone Harmony 802.11b Access Point

connects to a small Ethernet network to provide wireless access for mobile clients.

When used in conjunction a Harmony Access Point Controller, the Harmony 802.11b

Access Point is part of a single wireless networking solution that supports all current and

future wireless LAN standards, including OpenAir, IEEE 802.11b, and future 10 Mbps

frequency hopping and 5 GHz technologies, simultaneously within a single, homoge-

neous architecture. A Harmony system of Access Point Controllers and Access Points

providescentralizedmanagement, configuration, and security forawireless LAN.

Proximis the leading supplierof wireless networking solutions. Proxim’s unmatched

expertisein spread spectrumradio networking technology, combined with the

company’sextensive experience servingthecommunicationneedsof the mobile comput-

ing user, have kept Proxim at the forefront of the wireless LAN market.

The Harmony Family

The Harmony 802.11b Access Point Model 855x is a member of a product family that

providesacompletewirelessnetworkingsolution.

GThe Harmony Access Point Controller Model 7560 centralizes the manage-

ment, security, and filtering capabilities of a wireless LAN. The Access Point

Controllercommunicates with HarmonyAccess Points overthe Ethernet

network to provide wireless network access for mobile clients. The Access

Point Controller can support multiple Access Points, even if each Access Point

followsadifferentwirelessstandard.

GThe Harmony Access Point is a networking bridge that operates at Layer 2 of

the OSI networking model. Working in conjunction with a Harmony Access

Point Controller, the Access Point forwards packets between its radio and the

Ethernet network. Two types of the Harmony Access Point are available to

support either the OpenAir or IEEE 802.11b wireless standards: the OpenAir

Access Point Model 7550 and the 802.11b Access Point Model 855x. Note

that the 802.11b Access Point does not require an AP Controller to provide

mobileclientswithwirelessnetwork access.

GThe Harmony PC Card is a wireless LAN adapter that fits into a PCMCIA

Type II slot in a laptop computer. Two models of the Harmony PC Cards are

available to support either the OpenAir or IEEE 802.11b wireless standard: the

7430 Series OpenAir PC Card and the 8430 Series 802.11b PC Card.

GThe Harmony 802.11b PCI Card is a wireless LAN adapter that fits into a

standard PCI expansion slot and complies with the IEEE 802.11b wireless

standard.

GThe optional Harmony Power System Model 7562 provides remote DC

power to Harmony Access Points over the unused pins of a twisted pair

Ethernetcable.

Harmony 802.11b Access Point Model Numbers

There are two models of the Harmony 802.11b Access Point available. Both models

offerthe same functionality and have the same user interface.

Model 8550 is a Harmony 802.11b Access Point that ships with an integrated antenna

that provides diversity. This antenna supports two positions: up and down. For best

results, place the antenna in the up or vertical position, as shown in Figure 1 on page 13.

The integrated antenna cannot be removed from the Model 8550 Access Point.

Model 8551 is a Harmony 802.11b Access Point that ships with two Reverse polarity

TNC connectors (also known as R-TNC). This model supports external antenna options

that can increase the range of the Harmony 802.11b Access Point. It includes two

antennaconnectors tosupportantennadiversity, whichcanimprovesystem reliability.

Due to the characteristics of radio waves, it is possible that one antenna may provide

better performance than a second antenna installed a short distance away. Note that a

second antenna provides diversity only; it cannot be used to further increase the range of

the Access Point or increase its coverage area. When two antennas are connected to the

Access Point, only one antenna is in use at any point in time.

The Model 8551 Access Point ships with two 1-dBi omnidirectional antennas (Model

7015) that connect directly to the unit’s R-TNC antenna connectors. High-gain external

antennas and antenna cabling for the Model 8551 AP are sold separately. Contact your

Harmonyresellerfor information on the availableantennas that have been certifiedfor

use with this Access Point.

The IEEE 802.11b Specification

In 1997, the Institute of Electrical and Electronics Engineers (IEEE) adopted the 802.11

standard for wireless devices operating in the 2.4 GHz frequency band. This standard

includesprovisionsforthreeradiotechnologies:directsequencespreadspectrum,fre-

quency hopping spread spectrum, and infrared. Devices that comply with the 802.11

standard operate at a data rate of either 1 or 2 Mbps.

In 1999, the IEEE created the 802.11b standard. 802.11b is essentially identical to the

802.11 standard except 802.11b provides for data rates of up to 11 Mbps for direct

sequence spread spectrum devices. Under 802.11b, direct sequence devices can operate

at 11 Mbps, 5.5 Mbps, 2 Mbps, or 1 Mbps. This provides interoperability with existing

802.11 direct sequence devices that operate only at 2 Mbps.

Direct sequence spread spectrum devices spread a radio signal over a range of frequen-

cies. The IEEE 802.11b specification allocates the 2.4 GHz frequency band into 14

overlapping operating Channels. Each Channel corresponds to a different set of frequen-

cies. See Appendix B to determine the center frequency used by each Channel.

If operating multiple 802.11b Access Points in the same vicinity, the distance between

the center frequencies must be at least 25 MHz to avoid interference. Note that the

Channels available to an 802.11b Access Point will vary from country to country.

In the United States, the 802.11b standard allocates 11 operating Channels for direct

sequence devices. Channels 1, 6, and 11 are independent and do not overlap with each

other. To avoid interference between 802.11b Access Points, Proxim recommends that

you configure the Access Points using only Channels 1, 6, and 11 (if available).

The 802.11b operating parameters are described in Chapter 5.

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