Manuals / Cabletron Systems / Computer Equipment / Network Router

Cabletron Systems 3Com manual Contents, Overview Of Digital Wireless Networking

Models: 3Com

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1O VERVIEW OF D IGITAL W IRELESS N ETWORKING

Introduction	9
AirConnect Network Topologies					9
Peer-To-Peer Network				9
Same-Site Separate Networks					10
Single AP Bridge			11
Multiple-AP Full Coverage Network							12
AirConnect Access Point				12
AP Features		13
PowerBASE-T		13
Radio Basics	14
Cellular Coverage			15
Wireless LAN Service Area					16
802.1d Spanning Tree Support							16
Site Topography			17
Site Surveys			17
Theory of Operation			17
MAC Layer Bridging				17
Filtering and Access Control						18
DHCP Support			18
Media Types		18
Bridging Support			19
PPP Connection				20
Direct-Sequence Spread Spectrum							21
Wireless Client Association Process							21
Roaming	22
Extended Roaming				22
Security	23
Supporting CAM and PSP Stations							23
HTTP, HTML Web Server Support							24
Management Options				24
Programmable SNMP Trap Support 25
Using SNMP			25
Increased MIB Support 25
Using the User Interface					26

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Contents

Version AirConnect 11 Mbps Wireless LAN Access Point User GuidePublished December 95052-8145 3Com CorporationBayfront Plaza Santa Clara, California1 OVERVIEW OF DIGITAL WIRELESS NETWORKING CONTENTSPackage Contents 2 INSTALLING ACCESS POINT HARDWARE4 CONFIGURING THE ACCESS POINT USING A WEB BROWSER 3 MONITORING STATISTICSFiltering to Forward Packets 5 MONITORING WIRELESS CLIENTS6 CONFIGURING THE AP USING THE ASCII INTERFACE Gaining Access to the User Interface UIConﬁguring PPP 3Com Corporation Limited Warranty A ACCESS POINT SPECIFICATIONS B TECHNICAL SUPPORTINDEX WARRANTY AND REGULATORY COMPLIANCE Online Technical ServicesPage AirConnect Network OVERVIEW OF DIGITAL WIRELESS 1 NETWORKINGAirConnect Installation CD Introduction10 CHAPTER 1 OVERVIEW OF DIGITAL WIRELESS NETWORKING AirConnect Network Topologies Point AirConnect AccessAP Features Built-in diagnostics including a power-up self-check Radio Basics Radio Basics 00A0F8249AC8Wireless LAN Service Area 802.1d Spanning Tree Support16 CHAPTER 1 OVERVIEW OF DIGITAL WIRELESS NETWORKING Theory of Operation Site SurveysFiltering and Access Control Network Control Protocol NCP as described in 1220 PPP Extensions for BridgingRFC 1171 the Point-to-Point Protocol, July 20 CHAPTER 1 OVERVIEW OF DIGITAL WIRELESS NETWORKING PPP Connectionfollowing conditions The signal quality of a potential AP exceeds that of the current AP For extended roaming to work, you must use a static IP addressThe following terms describe elements of the extended roaming feature 1 Protocol or Scheme Simple Network Management Protocol SNMPIncreased MIB Support Using SNMPProgrammable SNMP Trap Support Management protocol MIBUsing the User Interface MethodDescription Requirements INSTALLING ACCESS POINT HARDWAREPrecautions Package ContentsPower Options Mounting the AP Ceiling Mount To mount an AP on a ceiling The power adapter connects to the rear of the AP and to a power outlet PowerBASE-T Using thePower LED Indicatorscondition, and other activity LED IndicatorsTroubleshooting Verify AP OperationElectrical Management System EMS operating outlet Verify Network Wiring and Topology Page Forwarding Counts MONITORING STATISTICSSystem Properties Interface StatisticsStatistic Ethernet StatisticsRadio Frequency StatisticsStatistics window, select Main Menu→Misc Statistics MiscellaneousPress Esc or Previous F4 to exit Statistics1 Select Conﬁguration from the Main Menu Clearing StatisticsKnown APs 2 Select Clear All StatisticsSetup Network Web Server Help File Access CONFIGURING THE ACCESS POINT USINGGaining Access to the User Interface UI Using a Web Browser Help File Access2 Select System Conﬁguration Accessing the Web Browser UI10 Select Virtual Directory 2 Select Close/Exit4 Select Save F1 to save the conﬁguration 1 Select Special Functions 2 Select Reset AP2 Select Alter Filenames/HELP URL/TFTP Server/DHCP using Tab 1 Select Special Functionsb Select Temporary Internet ﬁles and Settings 3Com Access Point2 Under Conﬁguration, select Security 3 Select System Password 1 Select Easy Setup--Easy Setup 1 Select Easy Setup--Easy Setup 2 Click Add/Delete GatewaysTo install an AP, follow the procedure below Adding or Deleting a Range of Allowed Wireless Clients Adding Allowed Wireless Clients1 Select Conﬁguration--Security 2 Select Enabled for Access Control 3 Click View/Add/Delete next to Allowed Wireless Clients1 Select Conﬁguration--Security 3 For the Short RF Preamble setting, click DisabledConsiderations Enabling or Disabling Encryption2 Type the AP’s name in the Unit Name text box 8 Enter a value in minutes for the Wireless Client Inactivity Timeout 5 Enter the Multicast Mask data and voice values9 Click Clear Entries to reinstate the default settings 11 Click Clear Entries to reinstate the default settings 6 Select Enabled or Disable All for All SNMP Traps4 Select Originate for Modem Connect Mode 1 Select Conﬁguration--PPP/Modem. The PPP/Modem Setup page displays2 Select Enabled for PPP Interface 3 Select PPP for Serial Port Use Conﬁguring the Originating ModemFiltering to Forward Packets 1 Select Conﬁguration--Filtering. The Filtering Setup page displaysConﬁguring the Answering Modem 2 Select Answer for Modem Connect Mode2 Under Conﬁguration, select Firmware Removing Filtered Packet Types Networking Protocols2 Click Delete Filter Disabling Type FilteringClear All Statistics Foreign Agent to tell the “home” AP where to forward packets MONITORING WIRELESS CLIENTSWireless Clients 4 Select Regular at the Wireless Clients prompt2 Select Clear All Statistics 1 Select Special Functions from the Main MenuClearing Statistics 7 Press Close to return to the previous menulatest version. Refer to “Manually Updating AP Firmware” on page CONFIGURING THE AP USING THEselection, then press Enter. Answer yes when prompted to save changes ASCII INTERFACENavigating the UI Enable serial portTo exit from submenus, press Esc 1 Select Set Serial Port Conﬁguration from the Main Menu 2 Select Telnet Logins2 Press Tab to select System Password Conﬁguring The Serial PortConﬁguring the Dial-Up System Hanging Up2 Select Modem Hangup Access Point Installation62 CHAPTER 6 CONFIGURING THE AP USING THE ASCII INTERFACE Configuring the AP 6 Do one of the following Select OK to register the settings Or 4 Do one of the following Select OK to register the settings Or 66 CHAPTER 6 CONFIGURING THE AP USING THE ASCII INTERFACE PPP DirectEstablishing a Connection PPP with Modems1 Select the Special Functions Menu from the Main Menu Originating APAnswering AP 4 Set the Connect Mode to Answer68 CHAPTER 6 CONFIGURING THE AP USING THE ASCII INTERFACE For automatic dial-out, reset the APprivileges. Ensure the password used matches the System Password used Read-Only and Read/Write Community were submitted. The default value000AF8F002FF Range of Wireless ClientsAddress Type? range individual 000AF8F001013 Press Add F2 Removing Allowed Wireless ClientsEnable/Disable the ACL Removing All Allowed Wireless ClientsAddress Filtering Load ACL from Wireless Client ListAdding Disallowed Wireless Clients Removing Disallowed Wireless ClientsClients from the AP Clearing WirelessSetting Logging Select Clear wireless client TableManually Updating AP Firmwareprevious version of AP ﬁrmware The remainder of this procedure uses Windows 98 as an example 5 Select Alter Filenames/HELP URL/TFTP and press EnterTo update the AP ﬁrmware using TFTP, do the following 13 Select Send File Downloading firmware using XMODEM. Send firmware with XMODEM nowDownloading HTML file using XMODEM. Send HTML file with XMODEM now 8 Open the Special Functions window5 Select Alter Filenames/HELP URL/TFTP Server and press Enter Download Successful Updating AP Update SuccessfulExtended Roaming Using MD5Authentication Performing PingsRequirements EncryptionConsiderations Conﬁgurationand Restoring Conﬁgurations 3 Press the Tab key to highlight .Short RF Preamble Enabled80 CHAPTER 6 CONFIGURING THE AP USING THE ASCII INTERFACE 2 Select Restore Factory ConﬁgurationOutput Characteristics ACCESS POINT SPECIFICATIONSPhysical Characteristics Radio Characteristics82 APPENDIX A ACCESS POINT SPECIFICATIONS Network CharacteristicsWorld Wide Web Site ServicesTECHNICAL SUPPORT Online TechnicalDetails about recent conﬁguration changes, if applicable Diagnostic error messagesProduct model name, part number, and serial number A list of system hardware and software, including revision levelsReturning Products for Repair To obtain an RMA number, call or faxPage INDEX updating AP ﬁrmware ASCII UI system password, changing 44 system properties windowwireless clients adding SNMP agentYEAR 2000 WARRANTY 3Com Corporation Limited WarrantyWARRANTY AND REGULATORY COMPLIANCE 3Com AirConnect Access PointLIMITATION OF LIABILITY OBTAINING WARRANTYSERVICE WARRANTIES EXCLUSIVERADIO FREQUENCY INTERFERENCE REQUIREMENTS CANADA Regulatory Compliance InformationIMPORTANT Read Before Using This Product 3Com End User Software License Agreement

CONTENTS

1OVERVIEW OF DIGITAL WIRELESS NETWORKING

1O VERVIEW OF D IGITAL W IRELESS N ETWORKING