Enterasys-networks 802.11 Manual de usuario

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Pagina 1 - ENTERASYS.COM

802.11 Wireless Networking GuideP/N 9034042-08ENJOY THE FREEDOM OF WIRELESS NETWORKINGENTERASYS.COM™

Pagina 2

Contentsviii Using the RoamAbout R2 Console Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11Using the Access Point 2

Pagina 3

Modifying the IP Address5-20 To manually change the IP address of an Access Point or Access Point 2000, perform the following. You will need the AP’s

Pagina 4

5-21Setting the Cabletron Discovery ProtocolUsing the Access Point 2000 Console PortTo manually enter an IP address, and disable both BOOTP and DHCP,

Pagina 5 - Contents

Modifying Wireless Parameters5-22 Modifying Wireless ParametersThe following AP wireless parameters can be modified as necessary:• AP Density: Should

Pagina 6

5-23Modifying Wireless Parameters• IntraBSS Relay: When enabled, it allows wireless users associated with an AP to see and communicate between each o

Pagina 7 - 4 Wireless Network Tools

Configuring for Security5-24 Configuring for SecurityTo have the most amount of security in your wireless infrastructure network:• Set up your networ

Pagina 8

5-25Configuring for SecuritySetting EncryptionBefore configuring encryption on the AP, create the encryption keys as follows:1. Create up to four key

Pagina 9

Configuring for Security5-26 Using the RoamAbout R2 Console PortTo configure encryption using the RoamAbout R2 console port, perform the following:1.

Pagina 10 - A PC Card Information

5-27Configuring for SecurityUsing the Access Point 2000 Console PortTo configure encryption using the console port, perform the following:1. Choose M

Pagina 11 - Glossary

Configuring the Console Port for Security5-28 Configuring the Console Port for SecurityFor the AP 2000, the AP Manager and any other SNMP Manager mus

Pagina 12

5-29Configuring the R2 for SNMPv1 or SNMPv2Configuring the R2 for SNMPv1 or SNMPv2The RoamAbout R2 supports SNMPv3. To support management tools using

Pagina 13 - Intended Audience

ixContentsB Connecting a Device to the Console PortC ASCII to HEX ConversionGlossaryIndex

Pagina 14 - Associated Documents

Configuring the AP for Authentication5-30 Configuring the AP for AuthenticationAuthentication uses a RADIUS server to authenticate wireless clients i

Pagina 15 - Document Conventions

5-31Configuring the AP for Authentication4. Enter the Custom Authenticator. The format is 16 printable ASCII characters, or 32 hexadecimal digits pre

Pagina 16 - Getting Help

Configuring the AP for Authentication5-32 Configuring the AP for AuthenticationBefore you can configure the AP as a RADIUS client, you must choose th

Pagina 17 - Chapter 1

5-33Configuring the AP for Authentication• Time Between Reauthentications: Time, in minutes, between each reauthentication when Reauthentication is e

Pagina 18 - RoamAbout AP

Configuring the AP for Authentication5-34 Using the RoamAbout R2 Console Port1. Choose Security and Policy Configuration from the Main Menu.2. Choose

Pagina 19

5-35Configuring the AP for AuthenticationUsing the Access Point 2000 Console Port1. Choose Module-Specific Options from the RoamAbout AP Installation

Pagina 20 - RoamAbout PC Card

Configuring for Rapid Rekeying5-36 Configuring for Rapid RekeyingTo use Rapid Rekeying, you must set up the AP for 802.1X authentication, as describe

Pagina 21 - Operating System Support

5-37Configuring for Rapid RekeyingUsing the Access Point 2000 Console PortTo set up Rapid Rekeying using the console port, perform the following step

Pagina 22 - Multiple APs

Configuring for Rapid Rekeying5-38 Set Up Rapid Rekeying on the ClientsThis section describes how to set up Rapid Rekeying on a Windows XP client. Fo

Pagina 23 - Workgroup

5-39Configuring for Rapid Rekeying6. In the Wireless Network Properties window (shown below), select the following:a) Check the box marked Data encry

Pagina 25 - LAN-to-LAN Configuration

Configuring for VLANs5-40 Configuring for VLANsThe RoamAbout AP supports the forwarding of tagged VLAN data. The RoamAbout R2 can be configured to fo

Pagina 26 - Point-to-Multipoint

5-41Configuring for VLANsPorts are displayed according to the Remote Wireless MAC addresses you set up for the RoamAbout R2 configuration. In the LAN

Pagina 27

Configuring for VLANs5-42 To enable or disable GVRP (RoamAbout R2 only):1. Click the VLAN Parameters button.2. Enable or disable GVRP. 3. Click OK.To

Pagina 28

5-43Setting Spanning TreeSetting Spanning TreeIt is important to avoid Point-to-Multipoint configurations that will cause bridge loops. A bridge loop

Pagina 29 - Restrictions

Filtering Traffic by Protocols5-44 Filtering Traffic by ProtocolsYou can configure the AP to NOT forward specific protocol traffic to the wireless ne

Pagina 30

5-45Filtering Traffic by ProtocolsDECnet Does not forward DECnet packets carried in Ethernet V2 frames or in IEEE 802.3 frames with LLC/SNAP headers.

Pagina 31 - Ad-Hoc Network

Filtering Traffic by Addresses5-46 Filtering Traffic by AddressesYou can filter traffic to the network using Address Denied, or you can restrict acce

Pagina 32 - Optional Antennas

5-47Checking the Configuration on Multiple APsChecking the Configuration on Multiple APsThe AP Manager provides integrity tests that check for consis

Pagina 33 - Range Extender Antenna

Resetting the RoamAbout AP5-48 Resetting the RoamAbout APThis section describes how to reset the AP.• Reset with Current SettingsIf you change any wi

Pagina 34 - Outdoor Antenna Kit

5-49Using the RoamAbout R2 Web ManagementUsing the RoamAbout R2 Web ManagementFor the RoamAbout R2 web management, AP Manager or any Network Manageme

Pagina 35 - Characteristics

xiPrefaceA RoamAbout wireless network consists of RoamAbout wireless products, such as the RoamAbout R2 Wireless Access Platform, RoamAbout Access

Pagina 36 - Wireless Network Name

Configuring Clients5-50 Configuring ClientsTo configure the clients, refer to the RoamAbout 802.11 PC Card Drivers and Utilities Setup and Installati

Pagina 37 - RoamAbout R2 MAC Addresses

6-1Chapter 6Maintaining the Wireless NetworkTo maintain the wireless network, you should regularly check the wireless coverage area, communications

Pagina 38 - Channel Frequencies

Testing Radio Communications Quality6-2 Testing Radio Communications QualityYou can test the radio communications quality from the AP to another wire

Pagina 39 - Transmit Rate

6-3Testing Radio Communications QualityUsing the RoamAbout Client UtilityThis procedure requires the RoamAbout Client Utility on a RoamAbout client.

Pagina 40 - Fixed Rate

Testing Radio Communications Quality6-4 A low signal level indicates that the client and the test partner may be too far apart or there may be obstru

Pagina 41 - Communications Quality

6-5Optimizing RoamAbout AP PlacementIf one or more clients are transmitting simultaneously with the AP in an infrastructure network, you may need to

Pagina 42 - AP Density and Roaming

Optimizing RoamAbout AP Placement6-6 To open the Site Monitor window, perform the following steps:1. To start the Client Utility, perform the followi

Pagina 43 - RTS/CTS Protocol

6-7Optimizing RoamAbout Outdoor Antenna Placement5. Check the signal level and noise level if the SNR is low between the AP and the wireless device.

Pagina 44 - Hidden Station

Logging Measurement Data6-8 Logging Measurement DataYou can save the results of your RoamAbout Client Utility Link Test or Site Monitor session in a

Pagina 45 - 802.11 Power Management

6-9Checking the Client RoamAbout PC CardChecking the Client RoamAbout PC CardThe RoamAbout Client Utility has a Diagnose Card tool that allows you to

Pagina 46 - Security

Associated Documentsxii Associated Documents You can download the documentation, drivers, and utilities from the RoamAbout Wireless web site. Check t

Pagina 47 - Transmit Key = 1

Monitoring the AP Using RMON6-10 Monitoring the AP Using RMONThe AP supports four of the nine Remote Network Monitoring MIB (RMON) groups: • Statisti

Pagina 48 - Authentication

6-11Monitoring RADIUS Client OperationsMonitoring RADIUS Client OperationsUsing the console port, you can monitor the RADIUS client statistics for th

Pagina 49

Monitoring RADIUS Client Operations6-12 Table 6-1: RADIUS Client Statistics Menu - Field DescriptionsField DescriptionInvalid Server AddressesNumber

Pagina 50 - 802.1X Rapid Rekeying

6-13Checking RoamAbout Product Version NumbersChecking RoamAbout Product Version NumbersUsing AP ManagerTo check the RoamAbout AP firmware version, r

Pagina 51

Upgrading the RoamAbout AP Firmware6-14 Upgrading the RoamAbout AP FirmwareThe AP firmware, also called embedded software, can be easily upgraded. Re

Pagina 52

6-15Upgrading the RoamAbout AP Firmware4. Choose BootP Server if a BootP server has been configured with the correct file. Choose TFTP Server if you

Pagina 53 - Console Port Security

Replacing the PC Card in an AP6-16 Replacing the PC Card in an APYou may need to replace a defective PC Card or upgrade the PC Card in an AP. If upgr

Pagina 54 - Wireless Traffic

7-1Chapter 7Problem SolvingThis chapter contains problem solving information for the RoamAbout wireless network. If the problem appears to be with

Pagina 55 - Message Types

Using the AP LEDs to Determine the Problem7-2 Using the AP LEDs to Determine the ProblemThe AP LEDs show status and help diagnose problems. The follo

Pagina 56 - Spanning Tree Protocol

7-3Using the AP LEDs to Determine the ProblemTable 7-1: RoamAbout R2 LED DescriptionsName DescriptionSystem Status Lights when the RoamAbout R2 pass

Pagina 57 - R2 Access Platform

xiiiDocument ConventionsDocument ConventionsThe following icons are used in this document:Icon MeaningCAUTION: Contains information essential to avoi

Pagina 58 - Network Configurations

Using the AP LEDs to Determine the Problem7-4 Table 7-2: RoamAbout R2 LED PatternsWired LAN Wireless LANWireless ForwardingWired ForwardingSystem OK

Pagina 59 - Static and Dynamic VLANs

7-5Using the AP LEDs to Determine the ProblemAP 2000 LEDsTable 7-3 describes the function of each LED. Error conditions cause the LEDs to turn on, of

Pagina 60 - RoamAbout SNMP Management

Using the AP LEDs to Determine the Problem7-6 Table 7-4: RoamAbout AP 2000 LED PatternsWired LAN Wireless LANAP SaturatedBridge StatePower/System St

Pagina 61 - RoamAbout R2

7-7Using the AP LEDs to Determine the ProblemTable 7-5: Network Loading LED PatternsWired LANWireless LANAP Saturated Bridge StatePower/System OKMea

Pagina 62

Using the AP LEDs to Determine the Problem7-8 AP (Classic) LEDsTable 7-6 describes the LED functions. Table 7-7 describes the patterns, likely causes

Pagina 63 - Designing and Implementing

7-9Using the AP LEDs to Determine the ProblemTable 7-7: AP (Classic) LED PatternsPower OKModule OKWired LAN Bridge StateSaturated Wireless LANCard P

Pagina 64 - Infrastructure Network

Using the AP LEDs to Determine the Problem7-10 Table 7-8: Network Loading/Upline Dumping LED PatternsPower OKModule OKWired LAN Bridge StateSaturate

Pagina 65 - Microwave

7-11Showing CountersShowing CountersYou can display the values of all the counters maintained by the AP. This information can help you monitor the pe

Pagina 66

Showing Counters7-12 Table 7-9: RoamAbout AP (Classic and 2000) CountersCounter DescriptionIndividually addressed bytes sentTotal number of bytes tr

Pagina 67 - AP1 AP4AP2

7-13Showing CountersSingle collision Number of successfully transmitted frames on the selected interface for which transmission is inhibited by exac

Pagina 68 - Using an Outdoor Antenna

Getting Helpxiv Getting HelpFor additional support related to this device or document, contact Enterasys Networks using one of the following methods:

Pagina 69

Showing Counters7-14 Table 7-10: RoamAbout AP Classic and 2000) PC Card CountersCounter DescriptionIndividually addressed frames sent (TxUnicastFram

Pagina 70

7-15Showing CountersTransmit retry limit exceeded frames (TxRetryLimitExceeded)Number of messages that could not be delivered after the maximum numbe

Pagina 71

Showing Counters7-16 Wrong station address on transmit (TxDiscardsWrongSA)Number of times a message transmission was not done because a wrong MAC add

Pagina 72

7-17Showing CountersTable 7-11: RoamAbout R2 CountersCounter Wired DescriptionDropEvents Total number of events in which packets were dropped by the

Pagina 73 - Wireless Network Tools

Displaying Error Logs7-18 Displaying Error LogsThe AP can display error logs used by support personnel to analyze system faults. The AP Manager displ

Pagina 74 - RoamAbout AP Manager

7-19RoamAbout PC Card LED Activity in a ClientRoamAbout PC Card LED Activity in a ClientIf you encounter difficulty using a RoamAbout client, the err

Pagina 75

RoamAbout PC Card LED Activity in a Client7-20 Table 7-12: RoamAbout PC Card LED DescriptionPower LEDTransmit/Receive LEDDescription/ActionContinuou

Pagina 76

7-21Windows Does Not Detect the RoamAbout PC CardWindows Does Not Detect the RoamAbout PC CardIf the RoamAbout PC Card was properly working at one ti

Pagina 77 - RoamAbout Console Port

Checking the Network Protocols on a Windows System7-22 Checking the Network Protocols on a Windows SystemTo verify that the client is configured for

Pagina 78 - Web Management

7-23Device Conflict on a Windows SystemDevice Conflict on a Windows SystemA device conflict under Windows NT may be related to the RoamAbout ISA card

Pagina 79 - RoamAbout Client Utility

1-1Chapter 1Wireless Network ConfigurationsThere are three basic RoamAbout wireless network configurations:• One or more APs connecting wireless cl

Pagina 80

Device Conflict on a Windows System7-24 A conflict can still occur even after using the Windows NT Diagnostics program to determine unused I/O port a

Pagina 81 - Chapter 5

7-25Device Conflict on a Windows SystemChanging the ISA Adapter AddressIf the device conflict is related to the I/O port address of the ISA card, you

Pagina 82

Setting SNMP Trap Addresses (Access Point Only)7-26 Setting SNMP Trap Addresses (Access Point Only)To have the AP send SNMP traps, you need to enter

Pagina 83 - Required Information

7-27Setting Upline Dump (Access Point Only)Setting Upline Dump (Access Point Only)The Upline Dump mode is disabled by default. This option allows you

Pagina 85

A-1Appendix APC Card InformationConsult your authorized RoamAbout reseller sales office for information about the radio regulations that apply in y

Pagina 86

A-2 Table A-2: Radio Characteristics (For Outdoor Antenna Use)R-F frequency band 2.4 GHz (2400-2500 MHz)Number of selectable sub-channelsEurope (ETS

Pagina 87

A-3Supported Frequency Sub-BandsSupported Frequency Sub-BandsThe RoamAbout PC Card supports a number of factory-programmed channels. The number of av

Pagina 89

B-1Appendix BConnecting a Device to the Console PortThis Appendix describes how to connect a device to the console port. Refer to the Hardware Inst

Pagina 90

RoamAbout AP1-2 RoamAbout APThis guide addresses the different RoamAbout AP hardware platforms: RoamAbout Access Point (sometimes referred to as Clas

Pagina 91

B-2 For the RoamAbout R2 Wireless Access Platform:3. If using a terminal, configure the transmit and receive baud rates to 9600 baud only.4. If using

Pagina 92

B-35. Press <Enter> until the RoamAbout Main Menu is displayed. The Installation Menu allows you to display and modify various AP and wireless

Pagina 94

C-1Appendix CASCII to HEX ConversionThis Appendix provides the ASCII to HEX conversion for use with third party products that do not allow ASCII en

Pagina 95

C-2 E45e65F46f66G47g67H48h68I49i69J4Aj6AK4Bk6BL4Cl6CM4Dm6DN4En6EO4Fo6FP50p70ASCII Value HEX Value

Pagina 96

C-3Q51q71R52r72S53s73T54t74U55u75V56v76W57w77X58x78Y59y79Z5Az7AASCII Value HEX Value

Pagina 98 - Viewing Current AP Settings

Glossary-1Glossary802.1XIEEE 802.1X uses security protocols, such as RADIUS, to provide centralized user identification, authentication and dynamic

Pagina 99 - Modifying the IP Address

GlossaryGlossary-2 CellA single AP and its wireless clients within a wireless infrastructure network containing multiple APs.Channel (Frequency)The c

Pagina 100

Glossary-3GlossaryISA adapterAn option for the RoamAbout PC Card for computers that do not have a PCMCIA slot. The ISA adapter installs into a comput

Pagina 101 - Using the AP Manager

1-3RoamAbout AP• Dynamic address learning The forwarding and translating process module automatically adds new source addresses to the address databa

Pagina 102 - Modifying Wireless Parameters

GlossaryGlossary-4 RADIUSRADIUS (Remote Authentication Dial-In User Service). RADIUS is an IETF standard protocol for Authentication, Authorization a

Pagina 103 - Using AP Manager

Glossary-5GlossaryWEPWired Equivalent Privacy. Used to encrypt data transmitted via the wireless medium.wireless clientA computer such as a PC, lapto

Pagina 105 - Setting Encryption

Index-1IndexNumerics802.1X Activation Keydescription 5-33entering 5-37802.1X authenticationoverview 2-15parameters 5-32802.1X Rapid RekeyingSee Rapid

Pagina 106

IndexIndex-2 ASCII character encryption key 5-25ASCII to HEX conversion C-1authenticationconfiguring 5-30–5-35overview 2-14Authentication trap 7-26Au

Pagina 107

Index-3Indexconsole portAccess Point security 2-19configuring for security 5-28connecting a device B-1description 4-5infrastructure network 5-7passwo

Pagina 108 - AP Manager

IndexIndex-4 FFiltersaddress 2-21, 5-46protocols 2-21, 5-44rate limiting 2-21Firmware Revisions integrity test 5-47Firmware versionAP 6-13fixed rate

Pagina 109

Index-5IndexLAN-to-LAN Multipoint Modedescription 1-3LAT filter 5-45LEDsPC Card 7-20RoamAbout AP 2000 7-5RoamAbout AP Classic 7-8RoamAbout R2 7-2Link

Pagina 110

IndexIndex-6 OOmni-directional antenna 1-18Outdoor antenna 1-18, 3-6, 3-7, 6-7PParameters integrity test 5-47Passwords 2-12PC Card11 Mbit/s 2-62 Mbit

Pagina 111 - to enter a custom AP

Index-7IndexRemote Network Monitoring MIBSee RMONRemote RTS Thresholddescription 2-9–2-10modifying 5-22Remote Wireless MAC Address 5-12Reset button 5

Pagina 113

RoamAbout PC Card1-4 RoamAbout PC CardThe RoamAbout PC Card is an IEEE 802.11 Direct Sequence (DS) compliant wireless network interface card.The Roam

Pagina 114

IndexIndex-8 SNRAP placement 6-6–6-7description 2-7in ad-hoc network 6-3outdoor antenna placement 6-7testing communications quality 6-2–6-3testing da

Pagina 115

Index-9IndexVLAN counters 7-12VLAN IDconfiguring with AP Manager 5-41range 2-23VLAN Nameconfiguring with AP Manager 5-41WWeb managementdefine passwor

Pagina 117

1-5RoamAbout PC CardOperating System SupportYou can have clients with various operating systems in the same wireless network. Refer to the RoamAbout

Pagina 118 - →Programs→Control Panel

Wireless Infrastructure Network1-6 Wireless Infrastructure NetworkIn a wireless infrastructure network, wireless clients communicate with an AP to co

Pagina 119

1-7Wireless Infrastructure NetworkFigure 1-1: Cells Within a Wireless Infrastructure Network ConfigurationTo allow wireless clients to physically mo

Pagina 120 - Configuring for VLANs

Wireless Infrastructure Network1-8 Wireless Client BehaviorYou can configure the wireless client to connect to a specific wireless network or the fir

Pagina 121

1-9LAN-to-LAN ConfigurationLAN-to-LAN ConfigurationYou can connect separate LANs over a wireless link by configuring two or more RoamAbout APs to com

Pagina 122

LAN-to-LAN Configuration1-10 Point-to-MultipointYou can connect wired LANs in different buildings using the LAN-to-LAN Multipoint feature. At least o

Pagina 123 - Setting Spanning Tree

1-11LAN-to-LAN ConfigurationFigure 1-4 provides an example of two Central APs in the same Point-to-Multipoint configuration. In this configuration, s

Pagina 124

LAN-to-LAN Configuration1-12 In Figure 1-4, Building A is the Central AP for Buildings A1 through A5 and Building B. However, Building B is also the

Pagina 125 - Protocol Description

1-13RoamAbout R2 Configuration ExamplesRoamAbout R2 Configuration ExamplesThis section provides configuration examples using the RoamAbout R2 (with t

Pagina 126

NOTICEEnterasys Networks reserves the right to make changes in specifications and other information contained in this document and its web site withou

Pagina 127

RoamAbout R2 Configuration Examples1-14 Workgroup Mode and LAN-to-LAN Example Figure 1-7 shows two RoamAbout R2s in different buildings using an outd

Pagina 128 - Resetting the RoamAbout AP

1-15Ad-Hoc NetworkAd-Hoc NetworkWireless ad-hoc networks do not include APs. Instead, the ad-hoc network is a loose association, or workgroup, of com

Pagina 129

Optional Antennas1-16 Optional AntennasThe RoamAbout PC Card has two integrated antennas that perform best in an open environment with as few obstacl

Pagina 130 - Configuring Clients

1-17Optional AntennasRange Extender AntennaUse the Range Extender Antenna (Figure 1-10) to ensure optimal transmission and reception quality for situ

Pagina 131 - Chapter 6

Optional Antennas1-18 Outdoor Antenna KitThere are two RoamAbout antennas available for outdoor use:• 14-dBi directional antenna• 7-dBi omni-directio

Pagina 132

2-1Chapter 2Understanding Wireless NetworkCharacteristicsThis chapter describes many of the wireless networking concepts and characteristics. You s

Pagina 133

Wireless Network Name2-2 Wireless Network NameA wireless network name, also called an SSID, is the name of the wireless infrastructure network. To ad

Pagina 134

2-3Access Point MAC AddressesAccess Point MAC AddressesThe MAC address is a unique identifier for networking devices. Each LAN device (including Ethe

Pagina 135 - Using the Client Utility

Channel Frequencies2-4 Channel FrequenciesThe channel sets the center radio frequency for the wireless device. The RoamAbout PC Card can support up t

Pagina 136

2-5Transmit RateTransmit RateThe transmit rate identifies the preferred data transmission speed of the AP. The actual data transmission speed is subj

Pagina 138 - Logging Measurement Data

Transmit Rate2-6 Auto RateWith the auto rate option, the PC Card in a client or AP automatically switches to the next lower rate when data transmissi

Pagina 139

2-7Communications QualityCommunications QualityCommunications quality is measured by the Signal to Noise Ratio (SNR). The SNR is a dynamic indicator

Pagina 140 - Monitoring the AP Using RMON

Data Throughput Efficiency2-8 Data Throughput EfficiencyData throughput efficiency is measured in transmissions sent, lost, or received. When a data

Pagina 141

2-9RTS/CTS ProtocolRTS/CTS ProtocolEach device in a wireless network can sense transmissions from other devices in its network that use the same freq

Pagina 142

RTS/CTS Protocol2-10 Hidden StationA wireless device is a hidden station when its transmissions cannot be sensed by another wireless device in the sa

Pagina 143

2-11802.11 Power Management802.11 Power ManagementPower management can extend the battery life of clients by allowing the client to sleep for short p

Pagina 144

Security2-12 SecurityThe following lists the types of security in a RoamAbout wireless environment:• Network operating system security• RoamAbout AP

Pagina 145

2-13SecurityWired Equivalent Privacy (WEP) EncryptionThe WEP feature encrypts all data transmitted within the wireless network. The encryption uses t

Pagina 146

Security2-14 AuthenticationThe RoamAbout AP supports authentication of wireless workgroup clients. An AP can authenticate clients based on:• MAC addr

Pagina 147 - Problem Solving

2-15Security802.1X AuthenticationIEEE 802.1X authentication allows logins based on user name, password, user certificates, and other methods that may

Pagina 148 - RoamAbout R2 LEDs

iiiContentsPrefaceIntended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pagina 149

Security2-16 802.1X Rapid RekeyingRapid Rekeying, also known as Key Tumbling, provides automatic IEEE 802.11 WEP encryption key generation and freque

Pagina 150

2-17Security2. The key period expires. The AP creates two new random keys and loads them into the inactive authenticator key indexes (Keys 3 and 4 in

Pagina 151 - AP 2000 LEDs

Security2-18 4. Once the AP transmits the new keys to all clients in the supplicant list, it begins using the new TX key (Key4). At this time all sup

Pagina 152

2-19SecuritySNMP Community NamesThe SNMP community name allows management tools using SNMP to display or modify AP parameters remotely.The RoamAbout

Pagina 153

Network Protocols2-20 Network ProtocolsWhen you install a RoamAbout PC Card in a computer using a Windows operating system, you may need to install a

Pagina 154 - AP (Classic) LEDs

2-21Wireless TrafficMessage TypesWhen a device in the wireless network transmits data, it can take one of these forms:• Broadcast: A data message tra

Pagina 155

Spanning Tree Protocol2-22 Spanning Tree ProtocolThe RoamAbout AP uses 802.1d Spanning Tree Protocol to prevent network loops. A loop occurs when the

Pagina 156

2-23VLANsVLANsA VLAN is a logical partition of one or more physical networks. A single VLAN can span multiple LANs, and multiple VLANs can reside wit

Pagina 157 - Showing Counters

VLANs2-24 Network ConfigurationsBoth the RoamAbout Access Point 2000 and the R2 can be used as a wireless bridge to an existing VLAN. For example, tw

Pagina 158 - Counter Description

2-25VLANsIngress Filtering is always enabled on the RoamAbout R2. That is, the R2 does NOT forward data from a VLAN defined on other ports if it is r

Pagina 159

Contentsiv 2 Understanding Wireless Network CharacteristicsIn This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pagina 160

RoamAbout SNMP Management2-26 RoamAbout SNMP ManagementAccess Point 2000The Access Point supports the Simple Network Management Protocol (SNMP) throu

Pagina 161

2-27RoamAbout SNMP ManagementRoamAbout R2The RoamAbout R2 supports SNMPv3. If your Network Management Station (NMS) does not support SNMPv3, use the

Pagina 163 - Counter Wired Description

3-1Chapter 3Designing and Implementinga Wireless NetworkThe first step in designing a wireless network is to determine which network configuration

Pagina 164 - Displaying Error Logs

Infrastructure Network3-2 Infrastructure NetworkTo plan a wireless infrastructure network, determine the following:• Coverage area - the area where t

Pagina 165 - Transmit/Receive

3-3Infrastructure NetworkDetermining the Coverage Area and Supported UsersCoverage area is determined by a number of factors, including physical obst

Pagina 166

Infrastructure Network3-4 Noise levels in the radio frequencies can reduce the coverage area. Such noise can be generated by microwave ovens and elev

Pagina 167

3-5Infrastructure NetworkSelecting the Locations for Multiple APsConsider the following:• Each coverage area must overlap another coverage area to al

Pagina 168 - →Control Panel

Infrastructure Network3-6 RoamAbout R2 Mezzanine Special Considerations The following information pertains to the RoamAbout R2 with the Mezzanine opt

Pagina 169 - Windows NT

3-7LAN-to-LAN Network ConfigurationLAN-to-LAN Network ConfigurationThere are two types of LAN-to-LAN configurations. The LAN-to-LAN Endpoint Bridge m

Pagina 170 - Windows 95 or 98

vContentsStatic and Dynamic VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25RoamAbout SNMP Manag

Pagina 171

Ad-Hoc Network3-8 Ad-Hoc NetworkThe only requirement for an ad-hoc network is the ability to communicate with one or more other wireless users. To do

Pagina 172

3-9Wireless Network Hardware Installation OverviewWireless Network Hardware Installation OverviewOnce you have designed the wireless network and dete

Pagina 173

Wireless Network Hardware Installation Overview3-10 Ad-Hoc NetworkThe following is an overview of the steps to install the wireless clients in an Ad-

Pagina 174

4-1Chapter 4Wireless Network ToolsThis chapter describes the configuration tools. You can configure the AP using one or more of these tools:• RoamA

Pagina 175 - PC Card Information

RoamAbout AP Manager4-2 RoamAbout AP ManagerThe RoamAbout AP Manager is a configuration tool for new APs and a management tool to assist the ongoing

Pagina 176

4-3RoamAbout AP ManagerInstalling the RoamAbout AP ManagerThe AP Manager supports Windows 95, Windows 98, Windows 2000, Windows Me, Windows NT (V4.0

Pagina 177 - Supported Frequency Sub-Bands

RoamAbout AP Manager4-4 Using the AP ManagerYou can manage APs individually or as a single group. You can group APs based on any criteria, such as:•

Pagina 178

4-5Other SNMP Management ToolsOther SNMP Management ToolsThe AP supports the Simple Network Management Protocol (SNMP) through any standard Network M

Pagina 179 - Appendix B

Telnet4-6 TelnetYou can manage the RoamAbout R2 through Telnet. However, you must first assign the R2 an IP address.Perform the following steps to ac

Pagina 180 - LKG-8996-931-01

4-7RoamAbout Client UtilityRoamAbout Client UtilityThe RoamAbout Client Utility is a diagnostic tool for RoamAbout wireless networks. The RoamAbout C

Pagina 181

Contentsvi 5 Configuring the Wireless NetworkIn This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pagina 183 - ASCII to HEX Conversion

5-1Chapter 5Configuring the Wireless NetworkThis chapter provides the procedures to configure the wireless device parameters. Before performing the

Pagina 184 - ASCII Value HEX Value

In This Chapter5-2 Setting Spanning Tree 5-43Filtering Traffic by Protocols 5-44Filtering Traffic by Addresses 5-46Checking the Configuration on Mult

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5-3Configuring APs in an Infrastructure NetworkConfiguring APs in an Infrastructure NetworkAfter installing the AP, you can configure its network and

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Configuring APs in an Infrastructure Network5-4 • Station name: Select a unique name that helps identify the location of the AP. Each AP should have

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5-5Configuring APs in an Infrastructure NetworkUsing the AP ManagerUse the Help button in the AP Manager for a description of any field.1. If you are

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Configuring APs in an Infrastructure Network5-6 Using the RoamAbout R2 Console PortTo use the console port, follow the instructions in “Connecting a

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5-7Configuring APs in an Infrastructure NetworkUsing the Access Point 2000 Console Port To use the console port, follow the instructions in “Connecti

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Configuring APs in a Point-to-Point Network5-8 Configuring APs in a Point-to-Point Network You can configure two APs to communicate with each other i

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5-9Configuring APs in a Point-to-Point NetworkWireless Parameters Used in a Point-to-Point Network The following AP parameters are not used in this c

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viiContentsRoamAbout R2 Console Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28Access Point 2000 C

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Configuring APs in a Point-to-Point Network5-10 Using the AP ManagerUse the Help button in the AP Manager for a description of any field.1. If you ar

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5-11Configuring APs in a Point-to-Point NetworkUsing the RoamAbout R2 Console PortTo use the console port, follow the instructions in “Connecting a D

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Configuring APs in a Point-to-Point Network5-12 Using the Access Point 2000 Console Port To use the console port, follow the instructions in “Connect

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5-13Configuring the AP for Point-to-MultipointConfiguring the AP for Point-to-MultipointYou can configure up to seven APs in a point-to-multipoint co

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Configuring the AP for Point-to-Multipoint5-14 Wireless Parameters Used in a Point-to-Multipoint Network The following AP parameters are not used in

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5-15Configuring the AP for Point-to-MultipointUsing the AP ManagerUse the Help button in the AP Manager for a description of any field.1. Determine w

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Configuring the AP for Point-to-Multipoint5-16 Using the RoamAbout R2 Console PortTo use the console port, follow the instructions in “Connecting a D

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5-17Configuring the AP for Point-to-MultipointUsing the Access Point 2000 Console Port To use the console port, follow the instructions in “Connectin

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Viewing Current AP Settings5-18 Viewing Current AP SettingsYou can view the current settings before you modify the RoamAbout AP parameters.Using the

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5-19Modifying the IP AddressModifying the IP AddressThe AP can obtain an IP address using these methods:• BootP (default): The AP obtains its IP Addr

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