3Com AccessBuilder 500 User Manual
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3Com AccessBuilder 500 User Manual

3Com AccessBuilder 500 User Manual

3com network device user guide
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Part No. 980/000037/001
Published March 1996
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  • Page 1 ® Part No. 980/000037/001 Published March 1996 CCESS UILDER EMOTE FFICE UIDE...
  • Page 2 Santa Clara, California 95052-8145 © 3Com Sonix Ltd, 1996. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without permission from 3Com Sonix Ltd.

  • Page 3: Important Safety Information

    Follow all instructions carefully. Please read carefully and thoroughly the following information before installing the AccessBuilder 500: Exceptional care must be taken during installation and removal of the unit. If the power supply plug is unsuitable and you have to replace it, you may find other codings for the respective connections.
  • Page 4 There are no user-replaceable fuses or user-serviceable parts inside the unit. If you have a physical problem with the unit that cannot be solved with problem solving actions in this guide, contact your supplier. Disconnect the power before moving the unit. WARNING: Twisted Pair RJ45 data port.

  • Page 5: Wichtige Sicherheitshinweise

    ACHTUNG: Die Warnungen enthalten Anweisungen, die Sie zur eigenen Sicherheit zu befolgen haben. Lesen Sie bitte die folgenden Informationen sorgfältig durch, bevor Sie den AccessBuilder 500 einbauen: Auf besondere Vorsicht muß während des Ein- und Ausbaus des AccessBuilder 500s geachtet werden.
  • Page 6 500 haben, das nicht mittels der Fehleranalyse in dieser Anleitung behoben werden kann, setzen Sie sich mit Ihrem Lieferanten in Verbindung. Bevor der AccessBuilder 500 ausgebaut wird ist der Netzstecker zu ziehen. ACHTUNG: gedrehte paarfache RJ45 Datenanschluss. Es ist eine abgeschirmte RJ45 Datenanschlußbuchse.

  • Page 7: L' Information De Sécurité Importante

    L’ INFORMATION DE MPORTANTE AVERTISSEMENT: Les avertissements contiennent les instructions que vous devez suivre pour votre sécurité personnelle. Suivre toutes les instructions avec soin. Veuillez lire à fond l’information suivante avant d’installer le moyeu: Le soin exceptionnel doit être pris pendant l’installation et l’enlèvement du moyeu.
  • Page 8 TNV (Telecoms Network Voltage - tension réseau de télécommunications) est un circuit qui dans des conditions d'opérations normales, transfert les signeaux télécoms. SELV (Safety Extra Low Voltage - tension de sécurité extra-réduite) est un circuit secondaire désigné et protègé qui dans des conditions normales et de fautes uniques, assure que la tension entre deux éléments accessibles n'accedéra pas un niveau de sécurité...

  • Page 9: Table Of Contents

    Using ISDN to Support Leased Line WAN Circuits 1-5 Pack Contents Checklist 1-6 Registering Ownership Of Your AccessBuilder 500 1-7 Pre-installation Requirements 1-8 AccessBuilder 500 Front and Rear Panel Features 1-9 Front Panel 1-9 Front Panel Liquid Crystal Display 1-12 Rear Panel 1-13 NFORMATION ÉCURITÉ...
  • Page 10 Installation 1-16 Siting the AccessBuilder 500 1-16 Connecting the Power 1-17 Connecting to Your 10BaseT LAN 1-18 Connecting to an Ethernet Hub 1-18 Connecting to the In-House LAN 1-19 Connecting to a Single Workstation 1-20 Connecting to Your LAN Using a Transceiver 1-20...
  • Page 11 Utilities Diskette 1-51 Sub-directory NOVELL 1-51 Sub-directory MIB 1-52 Sub-directory DECNET 1-52 RIDGING AND Introduction A-1 Bridging and Routing Concepts A-2 Guidelines For Choosing Bridging or Routing A-2 How Bridges Learn A-3 Bridging Between Remote Sites A-4 Building a Larger Network A-5 Multiple Paths Between Bridged LANs A-6 Network Topology A-6 Broadcast Storms A-6...
  • Page 12 LAN Port Connecting Cable - AUI B-10 Ordering Information B-11 LOSSARY ECHNICAL UPPORT On-line Technical Services D-1 3Com Bulletin Board Service D-1 Access by Modem D-1 Access by ISDN D-2 World Wide Web Site D-2 Support from Your Network Supplier D-3 Support from 3Com D-4...

  • Page 13: Limited Warranty

    NDEX IMITED ARRANTY FCC C LASS ERIFICATION TATEMENT...

  • Page 15: About This Guide

    UIDE Introduction This guide describes the features, installation and initial configuration of the AccessBuilder 500. The guide has been designed to be used by both first-time and experienced computer network users who want to install and use the AccessBuilder 500.

  • Page 16: How To Use This Guide

    How to Use This Guide This table shows where to find specific information: If you are looking for information on: About the AccessBuilder 500’s features, a description of the front panel indicators and rear panel connectors and step-by-step installation and configuration instructions.
  • Page 17 The text conventions used in this guide are: Convention Description “Enter” vs. “Type” When the word “enter” is used in this guide, it means type something, then press the [Return] or [Enter] key. Do not press the [Return] or [Enter] key when an instruction simply says “type.”...

  • Page 18: Additional Safety Information

    Do not spill food or liquids on the unit. If the unit gets wet, isolate the electrical supply and contact your 3Com reseller. Do not push any objects into the openings of the unit. Doing so can...
  • Page 19 Avoid using a telephone, which is connected to the unit (other than a cordless type), during an electrical storm. There may be a remote risk of electric shock from lightning. Equipment connected to the Voice port must be located in the same building as the unit.
  • Page 20 BOUT UIDE...

  • Page 21: Getting Started

    Introduction This chapter contains all the information you need to install and configure the AccessBuilder 500 to make it operational. You can carry out more sophisticated configuration using the information in the AccessBuilder ISDN Access Router Software Reference guide. AccessBuilder 500 Features...
  • Page 22 You incur minimum ISDN telephone charges as calls are made only when needed. This is known as Dial on Demand. ISDN can also be used to make voice calls using the AccessBuilder 500’s Voice port. You can connect an ordinary telephone handset, faxes and other similar office equipment.
  • Page 23 Introduction The principal features of the AccessBuilder 500 are: Easy to install, configure and support. ISDN, 2B+D port, supporting Basic Rate interface of two 64 Kbps and a 16 Kbps control channel. Voice port. Leased line wide area network (WAN) access port.

  • Page 24: Benefits Of Isdn

    1: G HAPTER ETTING TARTED Benefits of ISDN ISDN is an extension of the national and international public switched telephone network, which offers a digital end-to-end telecommunication system, providing a better quality service than available using the analog telephone network. The principal benefits of ISDN are: Fast call setup times, typically taking less than one second for national calls.

  • Page 25: Using Isdn To Support Leased Line Wan Circuits

    Introduction Using ISDN to Support Leased Line WAN Circuits ISDN provides an ideal service to connect remote LANs. To be effective, the connecting bandwidth needed is at least 56 Kbps to achieve a realistic throughput. Slower speed links can be used but usually only when usage is low and infrequent, or if higher speed circuits cannot be provided.

  • Page 26: Pack Contents Checklist

    TARTED Pack Contents Checklist Before you install your AccessBuilder 500, check the contents of the box against the pack contents checklist below. If any of the items have been damaged in transit or are missing, then contact the 3Com dealer from whom the equipment was purchased.

  • Page 27: Registering Ownership Of Your Accessbuilder 500

    Introduction Figure 1-1 AccessBuilder 500 Pack Contents Registering Ownership Of Your AccessBuilder 500 A warranty registration card is enclosed in the box with your AccessBuilder 500. Please take a few moments before commencing the installation to fill in the card and post it to us.

  • Page 28: Pre-Installation Requirements

    10BaseT), only one port can be used at a time. A standard ISDN line wall socket to connect the ISDN cable to the ISDN port of the AccessBuilder 500. If a suitably sited wall socket is not already available, then contact your telecommunications supplier for assistance.

  • Page 29: Accessbuilder 500 Front And Rear Panel Features

    AccessBuilder 500 Front and Rear Panel Features Front Panel Figure 1-2 AccessBuilder 500 Front Panel Features POWER This LED indicator shows the following: On – Power is connected to the unit and the rear panel On/Off switch is set to the ON position.
  • Page 30 ISDN line. Sometimes this LED does not light until the first call attempt is made. Off – No ISDN connection present. ISDN DATA This LED indicator provides confirmation that an ISDN call is in progress and that the AccessBuilder 500 is connecting to a remote unit. TARTED...
  • Page 31 Introduction 1-11 ISDN VOICE This LED indicator provides confirmation that a voice call is in progress, or the handset is off the hook and a dial tone is present, indicating that an ISDN network connection is available. ALARM This LED indicator provides confirmation that a fault has been detected on one of the configured ports.

  • Page 32: Front Panel Liquid Crystal Display

    1-12 1: G HAPTER ETTING Front Panel Liquid Crystal Display The liquid crystal display (LCD) cycles through a number of displays for three seconds each. These are shown in the table below: Figure 1-3 Front Panel LCD Display Display NoName 10.0.0.1 LAN1 T (R) ISDN1 T (R)

  • Page 33: Rear Panel

    Introduction 1-13 Rear Panel Figure 1-4 AccessBuilder 500 Rear Panel Features VOICE This port is used to connect an optional public switched telephone network (PSTN) telephone handset, or any other compatible analog equipment, operating in digital tone multiple frequency (DTMF) mode, by connecting the handset’s plug into this port.
  • Page 34 ISDN This port is used to connect to the ISDN network. The port uses an RJ45 connection socket. A standard ISDN line wall socket is required to connect the ISDN cable to the ISDN port of the AccessBuilder 500. Power switch Provides the unit with switched ON/OFF isolation from the electrical mains system.
  • Page 35 1-15 10BaseT This RJ45 port is used to provide a connection to a 10BaseT LAN. This socket allows direct connection between the AccessBuilder 500 and a single piece of equipment, as opposed to multi-point LAN connections using 10Base2 or 10Base5 cabling systems. The AccessBuilder 500 LAN port simulates the characteristics of a workstation port, which allows it to be directly connected to a LAN or network hub port as required.

  • Page 36: Installation

    HAPTER ETTING Installation Siting the AccessBuilder 500 When siting the AccessBuilder 500, ensure: It is accessible and cables can be easily connected. It is out of direct sunlight and away from sources of heat. Cabling is away from: Sources of electrical noise, such as radios, transmitters and broadband amplifiers.

  • Page 37: Connecting The Power

    Guide”. Isolate the electrical mains system supply before commencing installation. Ensure that the On/Off switch is set to its ‘OFF’ position. 1 Plug the mains lead into the power socket of the AccessBuilder 500 (see “Rear Panel” 2 Plug the other end of the mains lead into an adjacent electrical mains system outlet socket and if necessary turn on the power at the outlet socket.

  • Page 38: Connecting To Your 10Baset Lan

    ETTING Connecting to Your 10BaseT LAN Figure 1-6 Connecting to the 10BaseT Port You can use the 10BaseT connection on the AccessBuilder 500 in the following ways To connect directly to an Ethernet hub port. To connect to a 10BaseT in-house LAN socket that connects to your organization’s network.

  • Page 39: Connecting To The In-House Lan

    Connecting to the In-House LAN Figure 1-7 Connect The UTP Cable To In-House LAN Connection Box To connect the AccessBuilder 500 to in-house LAN: 1 Connect the UTP cable (not supplied) into RJ45 socket marked LAN on the AccessBuilder 500.

  • Page 40: Connecting To A Single Workstation

    Figure 1-8 Using the 10BaseT Crossover To Connect To A PC. Connecting to Your LAN Using a Transceiver You can use the AUI port to connect the AccessBuilder 500 to an Ethernet network using any type of cabling media, such as 10Base5, 10Base2 or fiber optic cable.

  • Page 41: Connecting To Isdn

    Figure 1-9 Figure 1-10. (US models see the note on page 1-6) CAUTION: Do not connect the ISDN line into the AccessBuilder 500’s LAN port as the ISDN line voltage could damage the unit. Figure 1-10 Examples of ISDN Wall Boxes...

  • Page 42: Connecting To The Wan

    Using a suitable WAN cable (as described in Appendix B) connect one end to the WAN port on the AccessBuilder 500 unit and the other to the NTU. For details of configuring the AccessBuilder 500 for use with a WAN, see page 1-39.
  • Page 43 1-23 Figure 1-11 Connecting The Management Cable If your PC has a 25 pin COM port, use the 9-pin to 25-pin adapter supplied with the AccessBuilder 500 to connect the manager cable to your PC as shown in Figure 1-12.

  • Page 44: Quick Configuration

    1-24 1: G HAPTER ETTING Quick Configuration This section describes how you can configure the unit to bridge or route over ISDN links to suit most networking requirements using a simple forms-based user interface. If you want to connect to a remote site using leased line WAN links see If you are unsure about the networking configuration you require, see “Examples of Typical ISDN Networking Applications”...
  • Page 45 If the cursor disappears during configuration, confirm that the Cursor Blink check-box has been checked (i.e. shows a cross in it). If the keyboard arrow keys fail to move the cursor during configuration, confirm that the ‘Use Function, Arrow, and Ctrl Keys for Windows’ check-box has not been checked.
  • Page 46 1-26 1: G HAPTER ETTING TARTED Figure 1-14 Quick Configuration Menu 4 At the command prompt enter The screen changes to display the Quick Configuration menu shown in Figure 1-14.

  • Page 47: About Quick Configuration

    You cannot configure the unit to be an IP bridge and IP router at the same time. The AccessBuilder 500 talks to other AccessBuilder units using its own very efficient FastConnect protocol over the ISDN or WAN port connections. If you need to communicate with another manufacturer’s equipment, then you need to configure the AccessBuilder 500 to use the PPP protocol using the Internet option.

  • Page 48: Setting The Unit Name

    1-28 1: G HAPTER ETTING TARTED Setting the Unit Name Before you configure the unit to connect to any other network, you must first give the unit a name. Enter at the command prompt on the Quick Configuration screen to display the screen illustrated in Figure 1-15.

  • Page 49: Connecting To A Novell (Ipx) Network

    Quick Configuration 1-29 SPID 1 and 2 Service Profile IDs (SPID) are used by some ISDN service providers in the USA. If SPID is used, enter the value you are given by your ISDN service provider. Leave this field blank if you have not been provided a SPID.
  • Page 50 1-30 1: G HAPTER ETTING TARTED Remote ISDN Number Type the ISDN number of the remote unit that connects to the Novell network. Call Type Set the Call Type required for your ISDN line. Toggle this field to the Call Type required by your ISDN service provider. Press [CTRL]+[E] to submit this information.

  • Page 51: Connecting To An Ip Host On The Same Ip Network

    Quick Configuration 1-31 Connecting to an IP Host on the Same IP Network To connect to an IP host on the same network using FastConnect, enter at the command prompt on the Quick Configuration screen to display the screen illustrated in Figure 1-17.
  • Page 52 1-32 1: G HAPTER ETTING TARTED Enter at the command prompt to permanently store this SAVE configuration in the unit’s memory. Although calls to the remote site are only generated when data is addressed to a specific IP host or hosts (in our example, 191.000.000.100), any data that cannot be identified as local is also passed over the link while it is open.

  • Page 53: Connecting To An Ip Host On A Different Ip Network

    Quick Configuration 1-33 Connecting to an IP Host on a Different IP Network To connect to an IP host on a different network using FastConnect, enter at the command prompt on the Quick Configuration screen to display the screen illustrated in Figure 1-18.
  • Page 54 1-34 1: G HAPTER ETTING TARTED If you want to use numbered links, you must enter an IP address for this port. The IP address must be on a different network or subnetwork than the unit’s LAN IP address but on the same network or subnetwork as the IP Address at the other end of the ISDN link.

  • Page 55: Connecting To The Internet Or A Ppp Router

    Quick Configuration 1-35 Connecting to the Internet or a PPP Router To connect to an Internet router or to a router using Point-to-Point Protocol (PPP), enter at the command prompt on the Quick Configuration screen to display the screen illustrated in Figure 1-19.
  • Page 56 1-36 1: G HAPTER ETTING TARTED IP Address of this unit’s LAN Type the IP address of this unit. This is the address you entered on the Name screen. IP Mask of this unit’s LAN Type the IP subnet mask you entered for this unit on the Name screen.
  • Page 57 The options are: Default – Use this option if you are connecting to another AccessBuilder 500. Also use this option if the remote unit is none of the following and amend the PPP parameters accordingly. 3Com – 3Com NETBuilder router.
  • Page 58 1-38 1: G HAPTER ETTING TARTED PAP Password for others to login to you By default this is set to UNUSED. If you need to use a PAP password, enter the password provided by your Internet service provider or the system administrator responsible for the remote router.

  • Page 59: Monitoring Isdn Line Usage

    Setting Up a WAN Link If you are using the AccessBuilder 500 to connect to a remote site over a leased line link, the initial setup is very simple. 1 Before you power on the unit, connect an appropriate WAN cable to the WAN port on the rear of the unit.
  • Page 60 1-40 1: G HAPTER ETTING d If you are routing, edit the Port IP address to set it to or to a valid IP address for the WAN link. Appendix A unnumbered links. If you are bridging, leave this field at the default setting. e If necessary, change any of the other parameters to suit your WAN link.

  • Page 61: Examples Of Typical Isdn Networking Applications

    Novell servers when connection is required. During configuration, once you have entered the ISDN number for the remote site, the AccessBuilder 500 makes a call to the remote site and autodiscovers the Novell servers on that network. It is then able to autocall the remote site whenever a connection to one of the remote servers is requested.
  • Page 62 If you are connecting to the remote site over a WAN leased line link, the AccessBuilder 500 has no need to spoof the IPX protocol as there is a permanent connection in place. Once the AccessBuilder 500 has determined that the server is on the Remote Site all data between the server and workstation is passed over the link.

  • Page 63: Ip Host On The Same Ip Network

    If your organization operates a TCP/IP network and needs to extend the IP network over geographically remote sites, it is possible to bridge the network using the AccessBuilder 500. It is only possible to bridge where both sites have the same network address and the devices are on the same subnet.

  • Page 64: Ip Host On Another Ip Network

    You can also configure the AccessBuilder 500 units at both ends of the link to implement a Firewall and/or Call Guillotine to reduce the amount of traffic permitted to pass across the link.
  • Page 65 IP host, any data for the remote network can generate an autocall and be routed over the AccessBuilder 500. If you need to connect to IP hosts on several networks, you will need to use routing to be able to communicate with the different hosts.

  • Page 66: Internet Or Ppp Router

    Some small businesses need high-speed connections into the Internet or need to connect to large global networks used by larger organizations. When communicating with another AccessBuilder 500, the unit uses FastConnect, its own proprietary high speed protocol. However, in order to connect with other routers it needs to be configured to use the slower PPP protocol.

  • Page 67: Multiple Connections From A Single Site

    Internet. All connections can be set up with an autocall so that connections to the remote sites are made as soon as the AccessBuilder 500 identifies data not destined for the local network. Figure 1-25 Multiple Connections From A Single Site...

  • Page 68: Troubleshooting

    CAUTION: Read the section ‘Important Safety information’ , at the start of this manual. The AccessBuilder 500 is fully performance tested after assembly. Providing the unit has been correctly installed, and is used in accordance with the instructions contained in this manual, difficulties should not arise. If unit or system maintenance is required, then it must be carried out by a competent network engineer.
  • Page 69 Follow the procedures as outlined for does not light. not light.” a) Ensure that the AccessBuilder 500 is powered up and the POWER LED is lit. b) Confirm that the ISDN UTP cable is correctly connected, and that the cable is attached to the socket marked ISDN.

  • Page 70: Renewing The Internal Protection Fuse

    1-50 1: G HAPTER ETTING Renewing the Internal Protection Fuse CAUTION: First, read the section; 'Important safety information' at the start of this manual. Isolate the electrical mains system supply before commencing installation. Ensure all on/off power switches are set to their 'OFF' positions and the mains lead has been removed from the unit's power socket.

  • Page 71: Utilities Diskette

    Utilities Diskette The AccessBuilder 500 is supplied with a software support diskette containing utilities which may help you enhance the performance of the unit. The directory structure for the diskette is shown below: The AB-UTILS directory contains three sub-directories which hold the following information, programs and utilities.

  • Page 72: Sub-Directory Mib

    1: G HAPTER ETTING Sub-directory MIB Contains the private SNMP MIBs in ASN1 format for use with the 3Com Impresario network management application, and for integration of a third party SNMP manager. Sub-directory DECNET Contains files which can be used for establishing ISDN calls in the DecNet environment.

  • Page 73: Ridging And Routing

    OUTING Introduction During the initial configuration of the AccessBuilder 500 you must decide whether to configure the unit as a bridge or as a router although we may help you with this choice with our Quick Configuration options. If you are unsure which option you should choose, read this appendix to help you decide.

  • Page 74: Appendix A: Bridging And Routing

    If you are connecting to a routed corporate network that is already running IP and/or IPX protocols or if you are using the AccessBuilder 500 to connect to the Internet you must configure the unit as a router.

  • Page 75: How Bridges Learn

    Bridging and Routing Concepts How Bridges Learn When a bridge is first powered on, it does not know the number or the locations of stations that are connected to the LAN. To minimize the amount of data passed over the bridge it must learn the whereabouts (address) of stations to ensure that it passes only the data that is intended to be passed over the bridge.

  • Page 76: Bridging Between Remote Sites

    Figure A-1 shows two LAN segments, A and B, which are connected by a pair of AccessBuilder 500 units, 1 and 2. The type of link between the two depends on the WAN services available at each of the remote bridge locations, and the price the network administrator is willing to pay for those services.

  • Page 77: Building A Larger Network

    You can configure outgoing calls to use either FastConnect or PPP as required. The ISDN port on the AccessBuilder 500 autosenses the protocol being used on incoming calls and switches to the protocol necessary for that connection.

  • Page 78: Multiple Paths Between Bridged Lans

    A: B PPENDIX RIDGING AND Multiple Paths Between Bridged LANs With only a single physical path between LANs, the network is susceptible to link and bridge failures. In the event of a failure, the connection between any of the LANs upstream or downstream of the point of failure will be broken.

  • Page 79: Optimum Use Of Resource

    Optimum Use of Resource Bridged networks use Spanning Tree Protocol (STP) to provide network resilience, by retaining redundant links on stand-by, in case the primary link fails. This means that you are not making maximum use of available resources. Routing protocols make each node aware of the primary and alternate routes available, ensuring that resources are not wasted.

  • Page 80: Routing Ip And Ipx

    A: B PPENDIX RIDGING AND OUTING Routing IP and IPX Running a bridged network allows workstations to communicate directly between one another. A PC user wishing to communicate with a remote network server is totally unaware of any intervening bridges. This is known as transparent operation.
  • Page 81 Network File Store (NFS) User Database Protocol (UDP) Internet Protocol (IP) and Internet Control Message Protocol Link Level Control Ethernet Hardware Figure A-4 Open Systems Interconnection Network Layer Model A routing environment allows stations to communicate indirectly. Following the example in wants to communicate with a network server on LAN 2.

  • Page 82: Ip Routing

    In the case of the TCP/IP protocol suite, the AccessBuilder 500 utilizes the Routing Information Protocol (RIP). RIP is also known as a distance vector...
  • Page 83 In an ISDN environment, making ISDN calls every thirty seconds to pass on and receive RIP updates would be costly. When initially setting up the network, the AccessBuilder 500 is manually connected over the ISDN for a three minute period, in order to learn the topology of the rest of the network.

  • Page 84: Ipx Routing

    In a Novell IPX environment we could allocate IPX network numbers 00000111 to LAN A, 00000222 to LAN B and 00000333 to LAN C. Having configured the ports of the AccessBuilder 500 to accept this protocol, routing will now occur between the remote network servers and workstations but addressed by different network numbers.

  • Page 85: Ip Addresses

    IP Addresses TCP/IP Numbering and subnet masking IP numbers or addresses are normally made up of four fields (normally called bytes), with each byte having a whole number value of between 0 and 255, and the bytes separated by a full stop. For example: 123.123.123.123 An IP address is divided into two sections, one is the Network Address section and the other is the Host Address section.

  • Page 86: Subnet Masking

    For example 255.255.0.0 can be expressed as 16 while 255.255.255.192 can be expressed as 24. The AccessBuilder 500 can be configured to use subnet masking to enable ISDN Autocalls to be made on groups of IP addresses or on specific IP addresses.
  • Page 87 Routing IP and IPX A-15 This is achieved by the addition of a number at the end of the configured address. For example: 193.123.123.123/32 appended to the IP number indicates that all four of the bytes are used and must have valid entries. mask, for example: 193.123.123.0/24 means that only the first three bytes are to be recognized and used, and...

  • Page 88: Obtaining An Ip Address

    A-16 A: B PPENDIX RIDGING AND Obtaining an IP Address If you want to use a unique IP addressing system on your network so you can connect to the Internet, there are three organizations responsible for allocating network addresses. These details are correct at the time of printing but may change.
  • Page 89 Asia Pacific Network Information Center (APNIC-DOM) Attention: Asia Pacific Network Information Center (APNIC-DOM) c/o Computer Center University of Tokyo 2-11-16 Yahoi Bunkyo-ku, Tokyo 113 Japan Admin. Contact: Nakayama, Masaya (MN89) Telephone: +81 3 3812 211 ext2720 e-mail: nakayama@nic.ad.jp Technical Contact: Conrad, David (DC296) Telephone: 81 3 3580 3781 or 3580 Fax:...

  • Page 90: Numbered And Unnumbered Links

    RIDGING AND OUTING Numbered and Unnumbered Links When routing and using the AccessBuilder 500’s FastConnect protocol over ISDN links as opposed to PPP, you have the option of using numbered or unnumbered links. A numbered link requires a valid IP address to be configured for both ports connected to each end of the link.

  • Page 91: Information

    ECHNICAL Specifications LAN Connector Interfaces 15-way D-type female AUI connector. 10BaseT via an RJ45 connector socket for UTP. Only one LAN connection can be used at a time. WAN Connector Interface 25-way D-type female connector, configured to support one of: V.11 (X.21) for speeds up to 2.048 Mbps.

  • Page 92: Management Connector Interface

    B: T PPENDIX ECHNICAL Management Connector Interface 9-way D-type to sub RJ11 connector for use with a VT100 compliant terminal or PC. Local and remote terminal management. TCP/IP Telnet menu driven management interface for remote management. Software upgrades, enhancements and configurations downloadable from network attached terminal or PC.

  • Page 93: Approvals

    Approvals Approvals This product ostensibly complies with the electro-magnetic compatibility (EMC) requirements of EN 55022 Class A and EN 50082 (susceptibility). However, to fully comply with Class B of EN55022 the following prerequisites should be observed: The WAN port must be attached to a screened digital cable. The ISDN cable must be used in conjunction with a three turn ferrite.

  • Page 94: Dimensions And Operating Requirements

    B: T PPENDIX ECHNICAL NFORMATION Dimensions and Operating Requirements Power Supply: 240 V AC, 50/60 Hz (nominal) UK and Europe Power Supply: 110 V AC 50/60 Hz (nominal) (USA) Power Consumption: 25 Watts Operating Temperature: 0-40°C (32-105°F) Humidity: 0-90% non-condensing...

  • Page 95: Interface Cable Characteristics

    Interface Cable Characteristics WAN Port Connecting Cable – V.11/X.21 Support The WAN port terminates with a 25-way D-type female connector. The port can be configured to support V.11 signalling characteristics at data transfer rates up to 2.048 Mbps. The WAN port connecting cable is not supplied with the unit.

  • Page 96: Wan Port Connecting Cable - V.24/V.28 Support

    B: T PPENDIX ECHNICAL NFORMATION WAN Port Connecting Cable – V.24/V.28 Support The WAN port terminates with a 25-way D-type female connector. The port can be configured to support V.24 or V.28 signalling characteristics at data transfer rates up to 19.2 Kbps. The WAN port connecting cable is not supplied with the unit.

  • Page 97: Wan Port Connecting Cable - V.35/V.36 Support

    Interface Cable Characteristics WAN Port Connecting Cable – V.35/V.36 Support The WAN port terminates with a 25-way D-type female connector. The port can be configured to support V.36 signalling characteristics at data transfer rates up to 48 Kbps. The WAN port connecting cable is not supplied with the unit.

  • Page 98: Manager Port Connecting Cable

    B: T PPENDIX ECHNICAL NFORMATION Manager Port Connecting Cable The manager port cable terminates with an RJ11 connector at one end and a 9-pin male/female D-type connector. The pin-out table below show the pin outs for this cable.

  • Page 99: Lan Port Connecting Cable - 10Baset

    Interface Cable Characteristics LAN Port Connecting Cable - 10BaseT The 10BaseT port terminates with an RJ45 connector which can be connected to the 10BaseT port on another device. The table below shows the pin-outs for a straight through cable.

  • Page 100: Lan Port Connecting Cable - Aui

    B-10 B: T PPENDIX ECHNICAL NFORMATION LAN Port Connecting Cable - AUI The AUI port terminates with a 15-pin female connector which must be connected to a transceiver on a LAN using an AUI (drop) cable. This cable is not supplied with the unit. The following signal characteristics must be observed when purchasing or fabricating a suitable cable.

  • Page 101: Ordering Information

    3C409000 3C409001 3C409004 733/000026 British Telecom socket to RJ11 converter (UK only). 980/000037 AccessBuilder 500 User Guide. 980/000036 AccessBuilder ISDN Access Router Software Reference. AccessBuilder Remote Office 500 (UK and Europe) AccessBuilder Remote Office 500 (USA) 25-pin to 25-pin D-type plug, with 3 meters of cable (V.24).

  • Page 102: Appendix B: Technical

    B-12 B: T PPENDIX ECHNICAL NFORMATION...

  • Page 103: Glossary

    LOSSARY 10Base2 An IEEE standard for using IEEE 802.3 protocol at 10 Mbps over thin Ethernet cable. 10Base5 An IEEE standard for using IEEE 802.3 protocol at 10 Mbps over thick Ethernet cable. 10BaseT An IEEE standard for using IEEE 802.3 protocol at 10 Mbps over unshielded twisted-pair cable (the T stands for twisted pair).
  • Page 104 C: G PPENDIX LOSSARY ASCII American Standard Code for Information Interchange, a standard that defines the values that are used for letters, numbers, and symbols. Attenuation The progressive degradation of a signal as it travels through a cable. AUI Attachment user interface, the interface between the unit and the data terminal equipment, usually in the form of a connecting cable.
  • Page 105 Bus A single segment through which devices are connected. An Ethernet LAN is based on a bus network which connects all communicating workstations with a common cable. Byte A string that consists of eight data bits treated as a unit. Call Guillotine A feature that disconnects a call after a certain period of time irrespective of whether data is being passed across the link or not.
  • Page 106 C: G PPENDIX LOSSARY D Channel A control channel carrying signalling information, running at 16 Kbps. The basic rate ISDN 2 service carries two B channels plus one control D channel. Refer to ISDN and B Channel. Data Characters or code either entered by the user or passed between devices that are part of the computer or network.
  • Page 107 FastConnect The OfficeConnect Remote’s proprietary connection protocol that allows fast connection between units either over the ISDN link or over a permanent leased line WAN link. Fiber optics A technology that uses laser light pulses, sent over thin glass fibres, which is able to deliver data at speed up to several gigabits per second.
  • Page 108 C: G PPENDIX LOSSARY ISDN Integrated Services Digital Network. A multi-channel digital end-to-end telecommunications network that provides a virtually error free transmission of data. ISO International Standards Organization. Refer to Open Systems Interconnection. Kbps A measurement of data transmission speed in kilo bits per second. Keep alives A message sent by one network device to inform another network device that the virtual circuit between them is still active.
  • Page 109 Network layer The third layer of the OSI reference model. This layer is responsible for controlling message traffic. NFS A network file system developed by Sun Microsystems for shared files over a UNIX platform. Node An alternative name for a computer or device (such as a printer or modem) that is connected to a network.
  • Page 110 C: G PPENDIX LOSSARY Presentation layer The sixth layer of the OSI network layer model. This layer controls the formatting and translation of data. Protocol A set of rules and procedures that govern the exchange of data between two communicating systems. PSTN Public switched telephone network.
  • Page 111 STP Spanning tree protocol, a protocol which prevents network loops. ™ Terminal The Microsoft Windows terminal emulation program. Terminators Devices that are used at the ends of a linear bus network segment to reflect the signal back and prevent failure of the segment. TCP/IP Transmission control protocol/Internet protocol, a set of communication protocols that support peer-to-peer connectivity functions for both local and wide area networks.
  • Page 112 C-10 C: G PPENDIX LOSSARY...

  • Page 113: D Technical Support

    3Com provides easy access to technical support information through the variety of services described in this appendix. On-line Technical Services 3Com offers worldwide product support seven days a week, 24 hours a day, through the following on-line systems: 3Com Bulletin Board Service (3ComBBS).

  • Page 114: Access By Isdn

    56 Kbps. To access 3ComBBS using ISDN, dial the following number: (1) (408) 654-2703 World Wide Web Site Access the latest networking information on 3Com’s World Wide Web site by entering our URL into your Internet browser: http://www.3Com.com/ This service features news and information about 3Com products, customer service and support, 3Com’s latest news releases, selected...

  • Page 115: Support From Your Network Supplier

    Support from Your Network Supplier If additional assistance is required, contact your network supplier. Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services, including network planning, installation, hardware maintenance, application training, and support services.

  • Page 116: Support From 3Com

    If you are unable to receive support from your network supplier, technical support contracts are available from 3Com. In the U.S. and Canada, call (800) 876-3266 for customer service. If you are outside the U.S. and Canada, contact your local 3Com sales office to find your authorized service provider: Country...

  • Page 117: Returning Products For Repair

    Returning Products for Repair A product sent directly to 3Com for repair must first be assigned a Return Materials Authorization (RMA) number. A product sent to 3Com without an RMA number will be returned to the sender unopened, at the sender’s expense.
  • Page 118 D: T PPENDIX ECHNICAL UPPORT...
  • Page 119 NDEX Numerics 10BaseT connections 1-18 10BaseT port 1-15 3Com Bulletin Board Service (3ComBBS) D-1 3Com sales offices D-4 ALARM LED 1-11 ALERT LED 1-11 connections 1-20 AUI port 1-15 bridging and routing concepts A-1 bulletin board service D-1 commands IN 1-35...
  • Page 120 NDEX LAN (continued) AUI connections 1-20 AUI port 1-15 LAN COLLISION 1-10 LAN RECEIVE 1-10 LAN SEND 1-10 LEDs ALARM 1-11 Alert 1-11 ISDN DATA 1-10 ISDN OK 1-10 ISDN VOICE 1-11 LAN COLLISION 1-10 LAN RECEIVE 1-10 LAN SEND 1-10 POWER 1-9 management configuring your unit 1-24...
  • Page 121 LIMITED WARRANTY HARDWARE: 3Com warrants its hardware products to be free from defects in workmanship and materials, under normal use and service, for the following lengths of time from the date of purchase from 3Com or its Authorized Reseller: Internetworking products...
  • Page 122 3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOMER'S OR ANY THIRD PERSON'S MISUSE, NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE, LIGHTNING, OR OTHER HAZARD.
  • Page 123 FCC CLASS B VERIFICATION STATEMENT This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference with radio communications.

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