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Aironet BR2040-E User Manual

Wireless lan-to-lan bridges for ethernet
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User's Guide
Wireless Bridges
Wireless LAN-to-LAN Bridges
for Ethernet
Products supported:
BR2040-E, BR2000-E, and BR1000-E
DOC-710-003850 Rev. A0
Aironet Wireless Communications, Inc. • 367 Ghent Road, Suite 300
P.O. Box 5292 • Fairlawn, Ohio 44334-0292

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  • Page 1 User’s Guide Wireless Bridges Wireless LAN-to-LAN Bridges for Ethernet Products supported: BR2040-E, BR2000-E, and BR1000-E DOC-710-003850 Rev. A0 Aironet Wireless Communications, Inc. • 367 Ghent Road, Suite 300 P.O. Box 5292 • Fairlawn, Ohio 44334-0292...
  • Page 2 © 1997 Aironet Wireless Communications, Inc. All rights reserved ARLAN® & Aironet® are trademarks of Aironet Wireless Communications, Inc. Printed in USA DOC-710-003850 Rev. A0...

  • Page 3: Manufacturers Federal Communication Commission Declaration Of Conformity Statement

    Manufacturers Federal Communication Commission Declaration of Conformity Statement Models : BR1000-E, BR2000-E, BR2040-E Manufacturer : Aironet Wireless Communications, Inc. 367 Ghent Rd , Suite 300 Fairlawn, OH 44333 1-800-3-WIRELESS This device complies with Part 15 rules. Operation is subject to the...
  • Page 4 Department of Communications—Canada Canadian Compliance Statement This Class B Digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numerique de la classe B respecte les exigences du Reglement sur le material broilleur du Canada. This device complies with RSS-210 of Industry of Canada. Operation is subject to the following two conditions: 1) this device may cause harmful interference, and 2) this device must accept any interference received, including interference that may cause undesired operation.

  • Page 5: Declaration Of Conformity

    EN 55022 (B) EN 55011 (B) EN 50082-1 EN 60950 Manufacturer: Aironet Wireless Communications, Inc. 367 Ghent Road, Suite 300 Fairlawn Ohio, 44333 The undersigned hereby declares that the equipment specified above conforms to the directives and standards cited herein.
  • Page 6 EN 55022 (B) EN 55011 (B) EN 50082-1 EN 60950 Manufacturer: Aironet Wireless Communications, Inc. 367 Ghent Road, Suite 300 Fairlawn Ohio, 44333 The undersigned hereby declares that the equipment specified above conforms to the directives and standards cited herein.

  • Page 7: Safety Information

    Do not turn on the BR1000-E/BR2000-E/ BR2040-E or attempt to transmit data unless the antenna(s) is(are) attached; if the antenna(s) is(are) not attached, the radio module may be damaged.

  • Page 8: Table Of Contents

    Table of Contents Introduction .................1 Wireless Bridge Overview..........2 Supporting Mixed Network Topologies......3 Adding In-Building Wireless Connectivity.......4 System Configurations ...........5 Point-to-Point Wireless Bridge ........6 Point-to-Multipoint Wireless Bridge ......7 Network Extension with Repeaters ......9 Wireless Bridge with Wireless End Nodes ....10 Radio Characteristics ...........11 Radio Network Terminology ........11 Understanding the Radio Network ......14 Before You Begin..............15...
  • Page 9 Where to Go from Here ............31 Technical Support ............31 Shipping Address ............31 Communications ............31 Web Site...............31 Appendix A: Serial Cable Pinout........32 Serial Port Pinout............33 Appendix B: Ethernet RJ-45 Cable........34...
  • Page 10 viii...

  • Page 11: Introduction

    T1 lines allowing all your PC users to gain Internet access, email and network resources housed in different buildings easily and efficiently. Aironet Wireless Communications, Inc. has pioneered the design and manufacture of wireless LAN products using advanced spread spectrum radio technology for extremely...

  • Page 12: Wireless Bridge Overview

    Wireless Bridge Overview Aironet Wireless Bridges enable you to connect two or more Token Ring and/or Ethernet networks to create a single virtual LAN. The workstations on each LAN can communi- cate with each other over the Wireless Bridges as if they were on the same physical LAN.

  • Page 13: Supporting Mixed Network Topologies

    Supporting Mixed Network Topologies To support mixed topologies, a Token Ring Bridge would be installed to support a local Token Ring network and an Ethernet Bridge would be installed to support a local Ethernet network. The Aironet Ethernet and Token Ring Bridges can then communicate with each other—linking both types of networks into a single LAN.

  • Page 14: Adding In-Building Wireless Connectivity

    If the existing network to which you are connecting the Bridge is not Token Ring- or Ethernet-based, you can install a Token Ring or Ethernet Network Interface Card (NIC) in the File Server or third-party Bridge and accommodate other network topologies. Adding In-Building Wireless Connectivity You can use an Aironet Wireless Bridge to support in- building wireless connections when local devices such as...

  • Page 15: System Configurations

    System Configurations You can use wireless bridges in many different network configurations. The way in which you configure your net- work determines the size of a network microcell (the area for which a single Bridge provides radio coverage). You can create multiple microcells on a LAN to extend your RF coverage area.

  • Page 16: Point-To-Point Wireless Bridge

    Point-to-Point Wireless Bridge The Point-to-Point Wireless Bridge configuration (shown in the following figure) uses two units to bridge two individual LANs. Packets are sent between the File Server and Work- station B through the Bridge units (Root Unit and Remote Node) over the radio link.

  • Page 17: Point-To-Multipoint Wireless Bridge

    Point-to-Multipoint Wireless Bridge When connecting three or more LANs (usually in different buildings), each building requires an Aironet Wireless Bridge and antenna. This is called a ‘multipoint’ bridge configuration. One bridge is designated as the central site and its antenna is configured to transmit and receive signals from the bridges at the other sites.
  • Page 18 The following figure shows an example of a Point-to- Multipoint configuration. Packets sent between Workstation A and Workstation B are forwarded by their respective bridges to the Root Unit. Then the Root Unit forwards these packets back down to the appropriate bridge for routing to the workstations.

  • Page 19: Network Extension With Repeaters

    Network Extension with Repeaters You can use bridges configured as repeaters to extend the range of a wireless network beyond that of a single radio hop. Repeaters can operate as either stand-alone units or they can have LAN connections. (See the following figure.)

  • Page 20: Wireless Bridge With Wireless End Nodes

    Wireless Bridge with Wireless End Nodes You can configure a Wireless Bridge to send and receive radio signals from in-building, radio-equipped devices at the same time that it functions as a wireless bridge. By equip- ping fixed, portable or mobile devices with Aironet Wireless Adapters, these devices can establish radio contact with the Bridge and have wireless access to all local and remote LANs, workstations and network resources.

  • Page 21: Radio Characteristics

    Radio Characteristics Aironet Wireless Bridges use a radio modulation technique known as Spread Spectrum Transmission. Spread Spec- trum radios broadcast signals over a range of available frequencies. The sending station uses a spreading code to encode the signal. Only the receiving station that uses this same spreading code can decode or "despread"...
  • Page 22 Wireless Network—Aironet’s Advanced Radio Local Area Network (ARLAN) is designed as shown in the following figure. This network structure shows that the Root Unit is at the top of the wireless network, and Repeaters and radio nodes branch down and away from the root to provide areas of wireless network coverage.
  • Page 23 Bridge—A device that connects two or more networks to create a virtual network. Remote Node—A non-Root Unit that communicates by radio with the Root Unit. Repeater—A device used to extend your network’s radio range. A single Bridge is limited to a specific RF range. If your system configuration includes nodes outside this range, you need to add a Repeater for these nodes to communicate.

  • Page 24: Understanding The Radio Network

    Understanding the Radio Network The preceding figure shows a simplified graphic illustration of a Radio Network. In this example shown, the Root Unit does not register but accepts registration from those nodes within Radio Range (The Repeater and top End Node). The Repeater registers to the Root Unit and accepts registrations from nodes in its radio range (the bottom End Node).

  • Page 25: Before You Begin

    Before You Begin Unpack your Wireless Bridge. Make sure the following items are present and in good condition: • Wireless Bridge (Ethernet model) • 120VAC/60Hz to 12-18VDC Power Pack or 90-264 VAC/47-63Hz to 12-18VDC Universal Power Pack • Standard 2dB Dipole Antenna If any item is damaged or missing, contact your retailer.

  • Page 26: Outdoor Locations

    Environment openness: The less cluttered and open your work environment, the greater the Bridge’s radio range. Building materials : The floor-to-floor penetration of the Bridge’s radio depends on the materials in your building’s construction. For example, the radios will achieve a greater range when used in buildings that have drywall rather than concrete block walls.

  • Page 27: Installing The Hardware

    Installing the Hardware Use the following procedures to install the Wireless Bridge hardware. Connecting the Antenna 1. With the Bridge powered off, attach the antenna to the antenna connector as shown below. Connect the antenna until it is finger-tight. Do not over- tighten.

  • Page 28: Connecting The Console Port Cable

    Connecting the Console Port Cable Connecting the Bridge’s console port to a terminal or to a PC running a terminal emulation program lets you configure the Bridge’s software. 1. With the Bridge powered off, connect the console port cable to the EIA-232-E port as shown below. 2.

  • Page 29: Connecting The 10Base2 Cable

    Connecting the 10Base2 Cable 1. Make sure the Bridge is turned off. 2. Connect one end of the Ethernet cable to one end of a BNC T-connector (if applicable). 3. Slide the T-connector onto the Bridge’s 10Base2 BNC connector and turn it until it locks into place, as shown in the following figure.

  • Page 30: Connecting The 10Base5 Cable

    Connecting the 10Base5 Cable 1. Make sure the Bridge is turned off. 2. Connect the Transceiver Connector to the Bridge’s 10Base5 AUI port, and slide the locking mechanism into place (shown in the following figure). 3. Connect the other Transceiver Connector at the end of the Transceiver drop cable to the External Transceiver.

  • Page 31: Connecting The 10Baset (Twisted Pair) Cable

    Connecting the 10BaseT (Twisted Pair) Cable 1. Make sure the Bridge is turned off. 2. Plug one end of an RJ-45 connector into the Bridge’s 10BaseT socket (as shown in the following figure). 3. Plug the cable’s other RJ-45 connector into the socket on a Twisted Pair hub or concentrator.

  • Page 32: Connecting The Power Pack

    Connecting the Power Pack After you have made the network connection, connect the Power Pack to the Bridge. 1. Connect the small plug on the end of the Power Pack cord into the 12-18VDC Port on the back of the Bridge as shown below.

  • Page 33: Viewing The Bridge's Top Panel Indicators

    Indicators. The Power-On Self Test follows. If any power-on test fails, the Status Indicator will go solid red and the unit will stop functioning . Refer to the BR1000-E/BR2000-E/BR2040-E Technical Reference Manual for error codes.

  • Page 34: Configuring The Wireless Bridge

    Configuring the Wireless Bridge Use the Bridge’s Console Port and the Console System to configure the unit to communicate with the rest of your net- work. The Console System consists of a series of menus from which you can change and set Bridge parameters to conform with your network.
  • Page 35 Pressing "=" returns you to the Main Menu from any other menu in the system. Note: The Main Menu that appears on your screen may not look exactly like the example above. Menu options depend upon the Bridge model that you have (BR1000- E, BR2000-E or BR2040-E).

  • Page 36: Setting Configuration Parameters

    5. Go to the next section, "Setting Configuration Parameters." Setting Configuration Parameters To configure the Wireless Bridge to communicate with the other elements in your radio and/or wired network, you need to access the Configuration Menu and set: • Radio Network parameters: System Identifier (SID), root/repeater mode, bit rate, and frequency •...

  • Page 37: Configuring The Radio Network

    Configuring the Radio Network The first parameter to configure is the SID for the bridge’s radio. The SID is a unique, 6-digit, hexadecimal number that is attached to each packet sent out over the radio. The Bridge’s SID must be the same as the SIDs of other nodes on its network.
  • Page 38 3. Decide what to do next: • If you want to assign a specific hexadecimal SID to the Bridge, type the hexadecimal number (less than ffffff) at the prompt and press Enter. • If you want to let the unit select a random SID, type "r" at the prompt and press Enter.
  • Page 39 The prompt: "Enter frequency in MHz, one of [2412, 2427, 2442, 2457, 2465]:" appears. 8. Type the appropriate frequency from the list provided and then press Enter. The new frequency appears on the menu. 9. Type "4" to select "Distance" from the Configuration Radio menu.

  • Page 40: Setting Ethernet Parameters

    Ethernet parameters. Go on to the "Disconnecting the Terminal" section. If you require additional information refer to the BR1000-E/BR2000- E/BR2040-E Technical Reference Manual . Disconnecting the Terminal With the initial configuration of the unit finished, you need to end the terminal session and disconnect the terminal (or PC) from the Bridge’s serial port.

  • Page 41: Where To Go From Here

    Where to Go from Here Please ask your Aironet representative for the BR1000- E/BR2000-E/BR2040-E Technical Reference Manual. Read the Technical Reference Manual to learn more details about your Aironet unit and ARLAN software. Use the instructions in this reference to view statistics and perform system diagnostics.

  • Page 42: Appendix A: Serial Cable Pinout

    Appendix A: Serial Cable Pinout A typical Wireless Bridge serial cable is a 9-pin cable. The following diagram shows its pinout.

  • Page 43: Serial Port Pinout

    Serial Port Pinout 9-Pin AT Name Abbr. Transmit Data Output> Receive Data Input< Request to Send Output> Clear to Send Input< Data Set Ready Input< Signal Ground Data Carrier Detect Input< Data Terminal Ready Output> Ring Indicator Input< 9 N/C •...

  • Page 44: Appendix B: Ethernet Rj-45 Cable

    Appendix B: Ethernet RJ-45 Cable The Ethernet cable is configured as a Hub device. See the following figure. 10Base5 Pin 1 10BaseT Pin 1...

This manual is also suitable for:

Br2000-eBr1000-e

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