Enterasys Outdoor Antenna Specifications

802.11 Wireless Networking GuideP/N 9034042-10ENJOY THE FREEDOM OF WIRELESS NETWORKINGENTERASYS.COM™

Contentsviii Configuring the Console Port for Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24AP Manager . .

Configuring the AP for Point-to-Multipoint5-14 The following AP parameters are not used in this configuration:Using the AP Manager Refer to Table 5-3

5-15Configuring the AP for Point-to-Multipoint9. To implement your changes:R2 AP: Select Reset from the main window. If changing the bridge mode, sel

Configuring the AP for Point-to-Multipoint5-16 6. Open Wireless Parameters in the navigation tree. 7. Select the slot to configure. Enter the paramet

5-17Viewing Current AP SettingsViewing Current AP SettingsYou can view the current settings before you modify the RoamAbout AP parameters.• AP Manage

Modifying the IP Address5-18 Modifying the IP AddressThe AP can obtain an IP address using these methods:• BootP (default): The AP obtains its IP Add

5-19Modifying the IP AddressTo manually change the IP address of an Access Point 2000, perform the following. You will need the AP’s wired MAC addres

Modifying the IP Address5-20 Using the RoamAbout R2 Web Interface 1. Open Network Configuration in the navigation tree.2. Select Network Parameters a

5-21Setting the Ethernet SpeedSetting the Ethernet SpeedThis sets the speed of the wired Ethernet connection for the RoamAbout R2. Typically, the def

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

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

ixContents8 Problem SolvingIn This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuring for VLANs5-24 Configuring for VLANsThe RoamAbout AP supports the forwarding of tagged VLAN data. The RoamAbout R2 can be configured to fo

5-25Configuring for VLANsPorts are displayed according to the Remote Wireless MAC addresses you set up for the RoamAbout R2 configuration. In the LAN

Configuring for VLANs5-26 To enable or disable GVRP (RoamAbout R2 only):1. Click on the VLAN Parameters button.2. Enable or disable GVRP. 3. Click on

5-27Setting Spanning TreeSetting Spanning TreeIt is important to avoid point-to-multipoint configurations that will cause bridge loops. A bridge loop

Setting Spanning Tree5-28 Using the Access Point 2000 Console PortYou can enable or disable the Spanning Tree when in endpoint bridge mode. Spanning

5-29Filtering Traffic by ProtocolsFiltering Traffic by ProtocolsUsing the AP Manager only, you can configure the AP to NOT forward specific protocol

Filtering Traffic by Protocols5-30 LAT Does not forward Local Area Transport (LAT) packets. Used primarily in terminal/server communication.AppleTalk

5-31Filtering Traffic by AddressesFiltering Traffic by AddressesUsing the AP Manager only, you can filter traffic to the network using Address Denied

Limiting Traffic5-32 Limiting TrafficThe R2 has the capability to limit broadcast traffic. The AP 2000 can limit multicast traffic. R2 Broadcast Rate

5-33Checking the Configuration on Multiple APsChecking the Configuration on Multiple APsThe AP Manager provides integrity tests that check for consis

Contentsx FiguresFigure 1-1: Cells Within a Wireless Infrastructure Network . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7Figure 1-2: Po

Resetting the RoamAbout AP5-34 Resetting the RoamAbout APThis section describes how to reset the AP.• Reset with Current SettingsIf you change any wi

5-35Configuring Clients• Hardware Reload/Reset button— RoamAbout R2. The R2 has a reload/reset button that is only used to download a new image from

6-1Chapter 6Configuring for SecurityThis chapter provides the procedures to configure the RoamAbout APs for security. Before performing these proce

Determining Security for Your Wireless Network6-2 Determining Security for Your Wireless NetworkThis section describes the security measures you can

6-3Determining Security for Your Wireless NetworkSecurity for Managing a RoamAbout APThe RoamAbout R2 can be managed from the AP Manager, a Network M

Setting Secure Access6-4 Setting Secure AccessSecure Access only applies in a wireless infrastructure network. This parameter is only available at th

6-5Setting EncryptionSetting EncryptionBefore configuring encryption on the AP, determine the encryption parameters as follows:1. Create up to four k

Setting Encryption6-6 Using the RoamAbout R2 Console Port or Telnet1. Choose Wireless Configuration from the Main Menu.2. Choose Encryption Configura

6-7Setting EncryptionUsing the Access Point 2000 Console Port1. Choose Module-Specific Options from the RoamAbout AP Installation Menu. 2. Choose Set

xiContentsTable 8-10: RoamAbout AP (Classic and 2000) PC Card Counters...8-14Table 8-11: RoamAbout R2 Counte

Configuring the R2 for SNMPv1 or SNMPv2c6-8 Configuring the R2 for SNMPv1 or SNMPv2cThe RoamAbout R2 supports SNMPv3. To support management tools usi

6-9Configuring the AP for AuthenticationConfiguring the AP for AuthenticationAuthentication uses a RADIUS server to authenticate wireless clients in

Configuring the AP for Authentication6-10 Using the AP ManagerTo enter a custom RADIUS Management Authenticator, perform the following steps:1. Clic

6-11Configuring the AP for Authentication5. Choose Save.Configuring the AP for AuthenticationBefore you can configure the AP as a RADIUS client, you

Configuring the AP for Authentication6-12 If using 802.1X or hybrid authentication, you need the following 802.1X parameter settings:• Reauthenticati

6-13Configuring the AP for Authentication5. If you enabled MAC or 802.1X authentication, perform the following to implement your changes. If only cha

Configuring the AP for Authentication6-14 Using the RoamAbout R2 Web Interface1. Open Authentication in the navigation tree.2. Select Slot 1 or Slot

6-15Configuring the AP for AuthenticationUsing the Access Point 2000 Console Port1. Choose Module-Specific Options from the RoamAbout AP Installation

Configuring RADIUS Accounting6-16 Configuring RADIUS AccountingThe RADIUS accounting feature allows the AP to save accounting data on a RADIUS accoun

6-17Configuring RADIUS Accounting• Interim Interval Minimum: If the RADIUS server overrides the Interim Interval setting, this setting determines the

Configuring for Rapid Rekeying6-18 Configuring for Rapid RekeyingTo use Rapid Rekeying, you must set up the AP for 802.1X authentication, as describe

6-19Configuring for Rapid RekeyingUsing the Access Point 2000 Console Port1. Choose Module-Specific Options from the Installation Menu.2. Choose Auth

Configuring for Rapid Rekeying6-20 Set Up Rapid Rekeying on the ClientsThis section describes how to set up Rapid Rekeying on a Windows XP client. Fo

6-21Configuring for Rapid Rekeying6. In the Wireless Network Properties window (shown below), select the following:a) Check the box marked Data encry

Configuring for Secure Telnet Sessions6-22 Configuring for Secure Telnet SessionsThis section describes how to configure Secure Shell for secure Teln

6-23Configuring for Secure Web Management SessionsConfiguring for Secure Web Management SessionsThis section describes how to configure TLS for secur

Configuring the Console Port for Security6-24 Configuring the Console Port for SecurityFor the AP 2000, the AP Manager and any other SNMP Manager mus

6-25Configuring the Console Port for SecurityUsing the RoamAbout R2 Web Interface You can enable or disable web or Telnet access to the RoamAbout R2

7-1Chapter 7Maintaining the Wireless NetworkTo maintain the wireless network, you should regularly check the wireless coverage area, communications

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

Testing Radio Communications Quality7-2 Testing Radio Communications QualityYou can test the radio communications quality from the AP to another wire

7-3Testing Radio Communications QualityUsing the RoamAbout Client UtilityThis procedure requires the RoamAbout Client Utility on a RoamAbout client.

Testing Radio Communications Quality7-4 A low signal level indicates that the client and the test partner may be too far apart or there may be obstru

7-5Optimizing RoamAbout AP PlacementIf one or more clients are transmitting simultaneously with the AP in an infrastructure network, you may need to

Optimizing RoamAbout AP Placement7-6 To open the Site Monitor window, perform the following steps:1. To start the Client Utility, perform the followi

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

Logging Measurement Data7-8 Logging Measurement DataYou can save the results of your RoamAbout Client Utility Link Test or Site Monitor session in a

7-9Checking the Client RoamAbout PC CardChecking the Client RoamAbout PC CardThe RoamAbout Client Utility has a Diagnose Card tool that allows you to

Monitoring the AP Using RMON7-10 Monitoring the AP Using RMONThe AP supports four of the nine Remote Network Monitoring MIB (RMON) groups: • Statisti

7-11Monitoring RADIUS Client OperationsMonitoring RADIUS Client OperationsYou can view the currently connected clients, also called supplicants, and

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

Monitoring RADIUS Client Operations7-12 Using the Access Point 2000 Console Port1. Choose Module-Specific Options from the RoamAbout AP Installation

7-13Monitoring RADIUS Client OperationsTable 7-1: RADIUS Client Statistics Menu - Field DescriptionsField DescriptionRound Trip TimeTime interval (i

Monitoring RADIUS Client Operations7-14 Table 7-2: RADIUS Client Accounting Statistics Menu - Field DescriptionsField DescriptionRound Trip TimeTime

7-15Checking RoamAbout Product Version NumbersChecking RoamAbout Product Version NumbersUsing AP ManagerTo check the RoamAbout AP firmware version, r

Upgrading the RoamAbout AP Firmware7-16 Upgrading the RoamAbout AP FirmwareThe AP firmware, also called embedded software, can be easily upgraded. Re

7-17Upgrading the RoamAbout AP FirmwareUsing the RoamAbout R2 Console Port or Telnet1. Make sure that you have properly configured a BootP/TFTP serve

Upgrading the RoamAbout AP Firmware7-18 Using the Access Point 2000 Console PortDo not choose the Save command when using the Upgrade Flash command.1

7-19Replacing the PC Card in an APReplacing the PC Card in an APYou may need to replace a defective PC Card or upgrade the PC Card in an AP. If upgra

8-1Chapter 8Problem SolvingThis chapter contains problem solving information for the RoamAbout wireless network. If the problem appears to be with

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

Using the AP LEDs to Determine the Problem8-2 Using the AP LEDs to Determine the ProblemThe AP LEDs show status and help diagnose problems. The follo

8-3Using the AP LEDs to Determine the ProblemTable 8-1: RoamAbout R2 LED DescriptionsName DescriptionSystem Status Lights when the RoamAbout R2 pass

Using the AP LEDs to Determine the Problem8-4 Table 8-2: RoamAbout R2 LED PatternsWireless LAN Slot 2Wireless Forwarding Slot 2Wireless LAN Slot 1Wi

8-5Using the AP LEDs to Determine the ProblemAP 2000 LEDsTable 8-3 describes the function of each LED. Error conditions cause the LEDs to turn on, of

Using the AP LEDs to Determine the Problem8-6 Table 8-4: RoamAbout AP 2000 LED PatternsWired LAN Wireless LANAP SaturatedBridge StatePower/System St

8-7Using the AP LEDs to Determine the ProblemTable 8-5: RoamAbout AP 2000 Network Loading LED PatternsWired LANWireless LANAP Saturated Bridge State

Using the AP LEDs to Determine the Problem8-8 AP (Classic) LEDsTable 8-6 describes the LED functions. Table 8-7 describes the patterns, likely causes

8-9Using the AP LEDs to Determine the ProblemTable 8-7: AP (Classic) LED PatternsPower OKModule OKWired LAN Bridge StateSaturated Wireless LANCard P

Using the AP LEDs to Determine the Problem8-10 Table 8-8: AP (Classic) Network Loading/Upline Dumping LED PatternsPower OKModule OKWired LAN Bridge

8-11Showing CountersShowing CountersYou can display the values of all the counters maintained by the AP. This information can help you monitor the pe

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

Showing Counters8-12 Table 8-9: RoamAbout AP (Classic and 2000) CountersCounter DescriptionIndividually addressed bytes sentTotal number of bytes tr

8-13Showing CountersSingle collision Number of successfully transmitted frames on the selected interface for which transmission is inhibited by exac

Showing Counters8-14 Table 8-10: RoamAbout AP (Classic and 2000) PC Card CountersCounter DescriptionIndividually addressed frames sent (TxUnicastFra

8-15Showing CountersTransmit retry limit exceeded frames (TxRetryLimitExceeded)Number of messages that could not be delivered after the maximum numbe

Showing Counters8-16 Wrong station address on transmit (TxDiscardsWrongSA)Number of times a message transmission was not done because a wrong MAC add

8-17Showing CountersTable 8-11: RoamAbout R2 CountersCounter Wired DescriptionDropEvents Total number of events in which packets were dropped by the

Displaying Error Logs8-18 Displaying Error LogsThe AP can display error logs used by support personnel to analyze system faults. The AP Manager displ

8-19RoamAbout PC Card LED Activity in a ClientRoamAbout PC Card LED Activity in a ClientIf you encounter difficulty using a RoamAbout client, the err

RoamAbout PC Card LED Activity in a Client8-20 Table 8-12: RoamAbout PC Card LED DescriptionPower LEDTransmit/Receive LEDDescription/ActionContinuou

8-21Windows Does Not Detect the RoamAbout PC CardWindows Does Not Detect the RoamAbout PC CardIf the RoamAbout PC Card was properly working at one ti

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

Checking the Network Protocols on a Windows System8-22 Checking the Network Protocols on a Windows SystemTo verify that the client is configured for

8-23Device Conflict on a Windows SystemDevice Conflict on a Windows SystemA device conflict under Windows NT may be related to the RoamAbout ISA card

Device Conflict on a Windows System8-24 6. Enter the I/O Port and IRQ values that you wrote down.A conflict can still occur even after using the Wind

8-25Device 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

Setting SNMP Trap Addresses (Access Point 2000 Only)8-26 Setting SNMP Trap Addresses (Access Point 2000 Only)To have the AP send SNMP traps, you need

8-27Setting Upline Dump (Access Point 2000 Only)Setting Upline Dump (Access Point 2000 Only)The upline dump mode is disabled by default. This option

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

Radio CharacteristicsA-2 Signal strength can be affected by closeness to metal surfaces and solid high-density materials. The ranges listed above pro

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

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

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

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

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

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

C-2 J4Aj6AK4Bk6BL4Cl6CM4Dm6DN4En6EO4Fo6FP50p70Q51q71R52r72S53s73T54t74U55u75V56v76W57w77X58x78Y59y79Z5Az7AASCII Value HEX Value

Glossary-1Glossaryaccess platformSee R2 Wireless Access Platform.access pointA wired to wireless bridge that connects a wireless LAN to a wired Eth

GlossaryGlossary-2 broadcast message A data message that is transmitted by a wired or wireless device to all devices within a network. Broadcast mess

Glossary-3Glossaryencryption algorithmA formula used to turn data into a secret code. Each algorithm uses a string of bits known as a "key"

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

GlossaryGlossary-4 IEEE The Institute of Electrical & Electronics Engineers, Inc. (IEEE) is an organization that develops standards for electrica

Glossary-5Glossaryomni-directional antennaAn antenna that radiates RF signals in all directions. An omni-directional antenna typically has a lower ga

GlossaryGlossary-6 RADIUSRADIUS (Remote Authentication Dial-In User Service). RADIUS is an IETF standard protocol for Authentication, Authorization a

Glossary-7GlossarySSHSecure Shell. SSH is a protocol used by the RoamAbout R2 for a secure remote login via Telnet. When enabled, SSH disables the st

GlossaryGlossary-8 wireless network A collection of end-user systems connected together using a medium such as radio frequency or infrared technology

Index-1IndexNumerics802.11 standard802.11b 2-2802.1X 2-2definition 2-2802.1X activation keydescription 6-12entering 6-19802.1X authenticationoverview

IndexIndex-2 Apple Classic network protocol 2-24Apple computer 2-24Apple Open Transport protocol 2-24AppleTalk filter 5-30ASCII character encryption

Index-3IndexClient Utilitycard diagnostics 7-9descriptionlink test 7-3Site Monitor 7-5site monitor 7-5starting 7-3test history 7-5version 7-15coldsta

IndexIndex-4 distancesad-hoc network 3-8infrastructure network 3-3LAN-to-LAN 3-7DS (Direct Sequence) 1-4DSA key 2-21DTIMdescription 2-13infrastructur

Index-5IndexII/O base address 8-23–8-24IEEEdefinition 2-2IGMP 5-3image file 7-16infrastructure networkrequired information 5-2wireless parameters 5-2

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

IndexIndex-6 Low AP Density setting 2-10MMAC addressdescription 2-5filtering 5-31R2 internal 2-5R2 Spanning Tree 2-5used with authentication 6-11wire

Index-7IndexOomni-directional antenna 1-18operating systemsupport 1-5OSI 1-2outdoor antennadescription 1-18placement 7-7with infrastructure network 3

IndexIndex-8 RADIUS Management Authenticatorchanging password 6-10description 6-9RADIUS serverclient statistics 7-11description 2-16parameters 6-11wi

Index-9IndexSS1 button 7-18Secure Accessconfiguring 6-4description 2-14infrastructure network 5-3integrity test 5-33modifying 5-22with wireless netwo

IndexIndex-10 Spanning Tree protocol 2-27, 5-27SSHdescription 2-21SSID 2-4SSL 2-22static VLAN 2-30Station Firmware 7-15station nameinfrastructure net

Index-11Indexusers supported by AP 3-4VV*.BIN file 7-16VAXcluster filter 5-30Vehicle-Mount antennadescription 1-16with infrastructure network 3-6VLAN

1-5RoamAbout PC Card DriversRoamAbout PC Card DriversYou can have clients with various operating systems in the same wireless network. The RoamAbout

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

1-7Wireless Infrastructure NetworkFigure 1-1: Cells Within a Wireless Infrastructure Network To allow wireless clients to physically move within a w

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

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

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

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

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

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

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

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

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

Optional Antennas1-16 Optional AntennasThe RoamAbout PC Card has two integrated antennas (also known as antenna diversity) that perform best in an op

1-17Optional AntennasRange Extender AntennaUse the Range Extender antenna (Figure 1-10), which also incorporates antenna diversity, to ensure optimal

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

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

802.11 Standard2-2 802.11 StandardThe 802.11 standard was developed by the Institute of Electrical & Electronics Engineers, Inc. (IEEE). This org

2-3UPN SupportUPN SupportUser Personalized Networks (UPN) is an architecture that allows network administrators to map network services to identified

Wireless Network Name2-4 Wireless Network NameA wireless network name, also called an SSID, is the name of the wireless infrastructure network. To ad

2-5AP MAC AddressesAP MAC AddressesThe MAC address is a unique identifier for networking devices. Each LAN device (including Ethernet cards, bridges,

Channel Frequencies2-6 Channel FrequenciesThe channel sets the center radio frequency for the wireless device. The RoamAbout PC Card can support up t

2-7Transmit RateTransmit RateThe transmit rate identifies the preferred data transmission speed of the AP. The actual data transmission speed is subj

Transmit Rate2-8 Auto RateWith the auto rate option, the PC Card in a client or AP automatically switches to the next lower rate when data transmissi

2-9Communications QualityCommunications QualityCommunications quality is measured by the Signal to Noise Ratio (SNR). The SNR is a dynamic indicator

Data Throughput Efficiency2-10 Data Throughput EfficiencyData throughput efficiency is measured in transmissions sent, lost, or received. When a data

2-11RTS/CTS ProtocolRTS/CTS ProtocolEach device in a wireless network can sense transmissions from other devices in its network that use the same fre

RTS/CTS Protocol2-12 Hidden StationA wireless device is a hidden station when its transmissions cannot be sensed by another wireless device in the sa

2-13802.11 Power Management802.11 Power ManagementPower management can extend the battery life of clients by allowing the client to sleep for short p

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

Security2-14 SecurityThe following lists the types of security in a RoamAbout wireless environment:• Network operating system security• RoamAbout AP

2-15SecurityWired Equivalent Privacy (WEP) EncryptionThe WEP feature encrypts all data transmitted within the wireless network. The encryption uses t

Security2-16 AuthenticationThe RoamAbout AP supports authentication of wireless workgroup clients. An AP can authenticate clients based on:• MAC addr

2-17Security802.1X AuthenticationIEEE 802.1X authentication allows logins based on user name, password, user certificates, and other methods that may

Security2-18 802.1X Rapid RekeyingRapid Rekeying, also known as Key Tumbling, provides automatic IEEE 802.11 WEP encryption key generation and freque

2-19Security2. 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

Security2-20 5. The key period expires. The AP creates two new random keys, loads them into the inactive authenticator key indexes (Keys 1 and 2 in t

2-21SecurityConsole Port SecurityThe RoamAbout R2 console port supports SNMPv3. Access to the console requires a password. The default username is ad

Security2-22 Secure Web SessionsThe R2 has the following security features for users who access the R2 using the web interface:• Ability to enable or

2-23RADIUS AccountingRADIUS AccountingThe RADIUS accounting feature allows the AP, as a RADIUS client, to save accounting data on a RADIUS accounting

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

Network Protocols2-24 Network ProtocolsWhen you install a RoamAbout PC Card in a computer using a Windows operating system, you may need to install a

2-25Wireless TrafficWireless TrafficIn addition to data, wireless network traffic includes beacons and various types of messages.BeaconsA beacon is a

Wireless Traffic2-26 FiltersThe following filters are only available using the RoamAbout AP Manager, or a Network Management Station that uses SNMP.

2-27Spanning Tree ProtocolSpanning Tree ProtocolThe RoamAbout AP uses 802.1d Spanning Tree protocol to prevent network loops. A loop occurs when ther

VLANs2-28 VLANsA VLAN is a logical partition of one or more physical networks. A single VLAN can span multiple LANs, and multiple VLANs can reside wi

2-29VLANsNetwork ConfigurationsBoth the RoamAbout Access Point 2000 and the R2 can be used as a wireless bridge to an existing VLAN. For example, two

VLANs2-30 Ingress 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

2-31RoamAbout SNMP ManagementRoamAbout SNMP ManagementAccess Point 2000The Access Point 2000 supports the Simple Network Management Protocol (SNMP) t

RoamAbout SNMP Management2-32 RoamAbout R2The RoamAbout R2 supports SNMPv3. If your Network Management Station (NMS) does not support SNMPv3, use the

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

vContentsSpanning Tree Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27Using the

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

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

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

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

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

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

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

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

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

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

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

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

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

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:•

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

Telnet4-6 TelnetYou can manage the RoamAbout R2 by using Telnet to access the console port menu. However, you must first assign the R2 an IP address.

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

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

Configuring APs in an Infrastructure Network5-2 Configuring APs in an Infrastructure NetworkAfter installing the AP, you configure its network and wi

5-3Configuring APs in an Infrastructure NetworkWireless network nameAny alphanumeric string (uppercase and lowercase) with a maximum of 32 characters

viiContentsSetting Spanning Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27Using

Configuring APs in an Infrastructure Network5-4 Using the AP ManagerRefer to Table 5-1 for a description of the parameters used in this procedure.1.

5-5Configuring APs in an Infrastructure NetworkUsing the RoamAbout R2 Console Port or Telnet Connection1. Choose Network Configuration from the Main

Configuring APs in an Infrastructure Network5-6 Using the Access Point 2000 Console Port 1. Choose Set IP Address from the Installation Menu. Enter t

5-7Configuring APs in a Point-to-Point NetworkConfiguring APs in a Point-to-Point Network You can configure two APs to communicate with each other in

Configuring APs in a Point-to-Point Network5-8 The following AP parameters are not used in this configuration:Ethernet Speed This sets the speed of t

5-9Configuring APs in a Point-to-Point NetworkUsing the AP Manager Refer to Table 5-2 for a description of the parameters used in this procedure.1. I

Configuring APs in a Point-to-Point Network5-10 Using the RoamAbout R2 Console Port or Telnet Connection 1. Choose Network Configuration from the Mai

5-11Configuring APs in a Point-to-Point NetworkUsing the Access Point 2000 Console Port 1. Choose Set IP Address from the Installation Menu.2. Enter

Configuring the AP for Point-to-Multipoint5-12 Configuring the AP for Point-to-MultipointYou can configure up to seven APs in a point-to-multipoint c

5-13Configuring the AP for Point-to-MultipointIP Address Mode Set to Manual when configuring an AP for the first time. For more information, see Modi