Cabletron Systems AirConnect 3Com Instrukcja Użytkownika

AirConnect ® 11 MbpsWireless LAN Access PointUser Guide Version 2.0 Part No. 09-2045-000Published December 2000

10 C HAPTER 1: O VERVIEW OF D IGITAL W IRELESS N ETWORKING Same-Site SeparateNetworks In this scenario, as shown in the following figure, Multip

AirConnect Network Topologies 11 Single AP Bridge Another possible AirConnect topology is a single AP bridging an Ethernet and wireless network. As s

12 C HAPTER 1: O VERVIEW OF D IGITAL W IRELESS N ETWORKING Multiple-AP FullCoverage Network This network topology will be used in most enterpri

AirConnect Access Point 13A wireless client communicating with an AP appears on the network as a peer to other network devices, rendering the wireless

14 CHAPTER 1: OVERVIEW OF DIGITAL WIRELESS NETWORKINGFor details concerning the installation of your PowerBASE-T, see “Using the PowerBASE-T”.Radio Ba

Radio Basics 15AirConnect devices, like other Ethernet devices, have unique, hardware-encoded Media Access Control (MAC), or IEEE, addresses. MAC addr

16 CHAPTER 1: OVERVIEW OF DIGITAL WIRELESS NETWORKINGAPs with the same WLAN service area define a coverage area. The wireless client searches for APs w

Theory of Operation 17Site Topography For optimal performance, place wireless clients and APs away from transformers, heavy-duty motors, fluorescent li

18 CHAPTER 1: OVERVIEW OF DIGITAL WIRELESS NETWORKINGFiltering and Access Control The AP provides facilities to limit the wireless clients that associ

Theory of Operation 19The DB-9, 9-pin, RS-232 serial port provides a User Interface (UI) or a Point-to-Point Protocol (PPP) connection. The UI provide

3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 Copyright © 2000, 3Com Corporation. All rights reserved. No

20 CHAPTER 1: OVERVIEW OF DIGITAL WIRELESS NETWORKINGPPP ConnectionConnecting an AP and a computer with a direct serial link requires the use of a nul

Theory of Operation 21Direct-Sequence SpreadSpectrumDirect Sequence Spread Spectrum (DSSS) uses a high-speed, non-information bearing signal to spread

22 CHAPTER 1: OVERVIEW OF DIGITAL WIRELESS NETWORKINGand the addition of the AP to the AP table with a proximity classification. An unsuccessful AP pac

Theory of Operation 23Enabling the extended roaming feature is like giving an individual a local post office forwarding address when leaving home for a

24 CHAPTER 1: OVERVIEW OF DIGITAL WIRELESS NETWORKINGthem to the wireless client and the wireless client goes back to sleep. A DTIM field, also called

Theory of Operation 25Changing one AP does not affect the configuration of other APs on the network. Make configuration changes to APs individually. Eac

26 CHAPTER 1: OVERVIEW OF DIGITAL WIRELESS NETWORKINGUsing the User InterfaceThe User Interface (UI) is a text-based maintenance tool integrated into

2INSTALLING ACCESS POINT HARDWAREIntroduction To install an AP, you will have to connect the AP to your network, mount the AP in a location best suite

28 CHAPTER 2: INSTALLING ACCESS POINT HARDWARENetwork Connection Locate the Ethernet port and power plug on the back of the AP, as shown by items 2 (p

Mounting the AP 29Mounting the AP The AP can be mounted in any number of locations, some of which are shown below.Flat Surface To mount an AP on a flat

C ONTENTS 1 O VERVIEW OF D IGITAL W IRELESS N ETWORKING Introduction 9AirConnect Network Topologies 9Peer-To-Peer Network 9Same-Site

30 CHAPTER 2: INSTALLING ACCESS POINT HARDWARECeiling Mount To mount an AP on a ceiling:1 Attach the mounting bracket to the AP by lining up the raise

Mounting the AP 31The power adapter connects to the rear of the AP and to a power outlet.1 Plug the power adapter cable into the socket at the back of

32 CHAPTER 2: INSTALLING ACCESS POINT HARDWAREUsing the PowerBASE-TThe PowerBASE-T allows you to power the AP using the Ethernet cable. If you are for

LED Indicators 33LED Indicators The top panel LED indicators provide a status display indicating transmission, error condition, and other activity. LE

34 CHAPTER 2: INSTALLING ACCESS POINT HARDWARETroubleshooting Check the following symptoms and their possible causes before contacting the 3Com Suppor

Troubleshooting 35Verify Network Wiringand Topology1 Verify network wiring and topology for proper configuration: Check that the cables used have prop

3MONITORING STATISTICSIntroduction The AirConnect AP keeps statistics of its transactions during operation. These statistics include traffic, transmiss

38 CHAPTER 3: MONITORING STATISTICSSelect any other item or click Access Point at the top of the navigation pane to exit.Ethernet Statistics The AP ke

Miscellaneous Statistics 39Miscellaneous StatisticsThe AP keeps statistics on WNMP and SNMP packets, filtering violations, and serial port use in the M

2 I NSTALLING A CCESS P OINT HARDWARE Introduction 27Precautions 27Package Contents 27Requirements 27Network Connection 2810B

40 CHAPTER 3: MONITORING STATISTICSClearing Statistics To clear statistics, do the following:1 Select Configuration from the Main Menu.2 Select Clear A

4CONFIGURING THE ACCESS POINT USING A WEB BROWSERIntroduction Software configuration requires setting up a connection to the Access Point (AP) and gain

42 CHAPTER 4: CONFIGURING THE ACCESS POINT USING A WEB BROWSER5 Make sure the server WWW service is running.6 Select Properties-->Service Propertie

Gaining Access to the User Interface (UI) Using a Web Browser 434 Select Save [F1] to save the configuration.You must always reset the AP after you mak

44 CHAPTER 4: CONFIGURING THE ACCESS POINT USING A WEB BROWSER5 Turn off the caching function for the browser to view configuration, function, or optio

Installing the Access Point 45Installing the Access PointAP Easy Setup is the program in which you set basic parameters for an AirConnect wireless net

46 CHAPTER 4: CONFIGURING THE ACCESS POINT USING A WEB BROWSERConfiguring the AP The AP has many configuration parameters. This section discusses all th

Special Configuration Considerations 475 Click Clear Entry if you decide to remove a wireless client from disallowed status with the AP.6 Repeat step

48 CHAPTER 4: CONFIGURING THE ACCESS POINT USING A WEB BROWSERSystem Parameters The AP has configuration options to operate the unit, including securit

Special Configuration Considerations 499 Click Clear Entries to reinstate the default settings.10 Click Save Settings to save your entries on this pag

Installing the Access Point 45Adding Additional Gateways 45Configuring the AP 46Security 46Adding Allowed Wireless Clients 46Addin

50 CHAPTER 4: CONFIGURING THE ACCESS POINT USING A WEB BROWSER10 Do nothing with the RTS Threshold setting. RTS/CTS operation is not supported at this

Special Configuration Considerations 51Configuring PPP/Modem To use a Point-to-Point (PPP) connection, choose the appropriate hardware connection (dire

52 CHAPTER 4: CONFIGURING THE ACCESS POINT USING A WEB BROWSER11 Enter the time in seconds for Maximum PPP Terminates.This setting controls the PPP-te

Special Configuration Considerations 53Removing Filtered Packet Types (Networking Protocols)You may have set up particular type of packets for discard

54 CHAPTER 4: CONFIGURING THE ACCESS POINT USING A WEB BROWSER7 A message box appears to tell you that the AP will reboot after the HTML file upgrade.

5MONITORING WIRELESS CLIENTSIntroduction The AP keeps statistics of its transactions during operation. These statistics indicate traffic, transmission

56 CHAPTER 5: MONITORING WIRELESS CLIENTS5 Select Start Refresh to have the AP automatically update the display every two seconds.The information disp

6CONFIGURING THE AP USING THE ASCII INTERFACEIntroduction Software configuration consists of setting up a connection to the Access Point (AP) and gaini

58 CHAPTER 6: CONFIGURING THE AP USING THE ASCII INTERFACE3 Press ESC. The AP displays the Main Menu. If the session is idle (due to no input, for exa

Navigating the UI 59 You can use function keys to enable commands in some windows. For example, statistic windows include Refresh [F1] and Timed [F2]

Access Point Installation 62Configuring the AP 63System Parameters 63Radio Parameters 64Configuring PPP 66PPP Direct 66Establis

60 CHAPTER 6: CONFIGURING THE AP USING THE ASCII INTERFACEChanging the Accessto the UITo prevent unauthorized Telnet access, change the configuration a

Navigating the UI 61Configure the other settings as required on the AP. The table below explains the other settings.Configuring the Dial-Up SystemTo con

62 CHAPTER 6: CONFIGURING THE AP USING THE ASCII INTERFACEAccess Point InstallationThe AP UI includes an AP Installation window in which you can set b

Configuring the AP 63Configuring the AP The AP has many configuration parameters. This section discusses all the AP parameters and how to set them.Syste

64 CHAPTER 6: CONFIGURING THE AP USING THE ASCII INTERFACE4 To enable or disable interfaces on the AP, modify the following parameters:5 Verify that v

Configuring the AP 653 Verify that values reflect the network environment and change them as needed.4 Do one of the following: Select OK to register t

66 CHAPTER 6: CONFIGURING THE AP USING THE ASCII INTERFACE5 To save the RF Configuration information to all APs with the same WLAN Service area, select

Configuring the AP 67Dial out manually through the Special Functions menu or dial out automatically when the system boots up.Originating APTo configure

68 CHAPTER 6: CONFIGURING THE AP USING THE ASCII INTERFACETo hang up, do the following:1 Select Special Functions from the Main Menu.2 Select Modem Ha

Configuring the AP 693 Verify that values reflect the network environment and change them as needed.4 Do one of the following: Select OK to register t

A A CCESS P OINT S PECIFICATIONS B T ECHNICAL S UPPORT Online Technical Services 83World Wide Web Site 833Com FTP Site 83Support from

70 CHAPTER 6: CONFIGURING THE AP USING THE ASCII INTERFACE12 Select Exit [ESC] to return to the previous menu.When you enable the Access Control optio

Configuring the AP 71Load ACL from Wireless Client ListThe Load ACL from wireless client List option, from the Special Functions menu, takes all curre

72 CHAPTER 6: CONFIGURING THE AP USING THE ASCII INTERFACERemoving Filter TypesTo remove packet types from the Type Filtering list, do the following:1

Manually Updating AP Firmware 734 Press space bar or left/right arrows to toggle between Enabled and Disabled.5 Verify that values reflect the network

74 CHAPTER 6: CONFIGURING THE AP USING THE ASCII INTERFACEUpdate using TFTP The Ethernet TFTP upgrade method requires a connection between the AP and

Manually Updating AP Firmware 75To update the AP firmware using Xmodem, follow the procedure below.1 Copy the firmware files dsap_fw.bin and 3cap_htm.bin

76 CHAPTER 6: CONFIGURING THE AP USING THE ASCII INTERFACE17 Repeat step 12 through step 16 to download the next file and avoid a transfer time-out err

Performing Pings 7710 Select Special Functions from the Main Menu.11 Select Use TFTP to Update All Access Points and press Enter, which generates the

78 CHAPTER 6: CONFIGURING THE AP USING THE ASCII INTERFACEEnabling or Disabling EncryptionThe AP can be set for encryption of links to associated wire

Saving, Resetting, and Restoring Configurations 793 Press the Tab key to highlight .Short RF Preamble Enabled.4 Press the space bar to change the sele

80 CHAPTER 6: CONFIGURING THE AP USING THE ASCII INTERFACERestoring the Default APConfigurationIf an AP fails to communicate because of improper settin

AACCESS POINT SPECIFICATIONSPhysical CharacteristicsDimensions 1.25” H x 5.5” L x 7.75” W (3.18 cm H x 14.97 cm L x 19.69 cm W)Weight (w/power supply)

82 APPENDIX A: ACCESS POINT SPECIFICATIONSNetwork CharacteristicsEthernet Frame DIX, Ethernet_II, IEEE 802.3Filtering Packet Rate14,400 frames per sec

BTECHNICAL SUPPORTOnline Technical Services3Com offers worldwide product support 24 hours a day, 7 days a week, through the following online systems:

84 APPENDIX B: TECHNICAL SUPPORTSupport from 3Com If you are unable to obtain assistance from the 3Com online technical resources or from your network

Returning Products for Repair 85Returning Products for RepairBefore you send a product directly to 3Com for repair, you must first obtain a Return Mate

87INDEXNumbers10BASE-T connection 283Com URL 83802.1d spanning tree support 16Aaccess control 18access pointconfiguring in ASCII UI 62descrip

88 INDEXNnavigating the ASCII UI 58network connection 28network supplier support 83network topologiesmultiple-AP network 12peer-to-peer networ

WARRANTY AND REGULATORY COMPLIANCE3Com Corporation Limited WarrantyThis warranty applies to customers located in the United States, Australia, Canada

1 O VERVIEW OF D IGITAL W IRELESS N ETWORKING Introduction AirConnect ® from 3Com is made up of a series of products that work together to deli

OBTAINING WARRANTY SERVICECustomer must contact a 3Com Corporate Service Center or an Authorized 3Com Service Center within the applicable warranty pe

Regulatory Compliance InformationRADIO FREQUENCY INTERFERENCE REQUIREMENTSThis device has been tested and found to comply with the limits for a Class

3Com End User Software License AgreementIMPORTANT: Read Before Using This ProductYOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE U