Page 5 - Contents; How to Use This Guide
Contents ONline Ethernet 10BASE-FB Module Installation and Operation Guide v How to Use This Guide Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiiStructure of This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 9 - Figures
ONline Ethernet 10BASE-FB Module Installation and Operation Guide ix Figures Figure 1-1. 10BASE-FB Module Connections . . . . . . . . . . . . . . . . . . . . . 1-5 Figure 2-1. 1700 Meter Fiber Link With Mechanical Splice . . . . . . . . . 2-12 Figure 2-2. 2000 Meter Fiber Link Through Two Patch Pane...
Page 11 - Tables
ONline Ethernet 10BASE-FB Module Installation and Operation Guide xi Tables Table 1-1. 10BASE-FB Module Compatibility . . . . . . . . . . . . . . . . . . . . . 1-6 Table 2-1. Basic Network Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Table 2-2. Equivalent Fiber Distances of ...
Page 13 - Audience
ONline Ethernet 10BASE-FB Module Installation and Operation Guide xiii How to Use This Guide This guide is designed to help you understand the features, indicators, and installation procedures for the: ❑ 3Com ONline™ Ethernet Port-Switching 10BASE-FB Modules (Model Numbers 5102M-FBP and 5104M-FBP) ❑...
Page 14 - Structure of This Guide
xiv ONline Ethernet 10BASE-FB Module Installation and Operation Guide Structure of This Guide This guide contains the following chapters: Chapter 1, Introduction – Introduces the principal features of the ONline Ethernet Port-Switching 10BASE-FB Modules and the ONline Ethernet 10BASE-FB Module. Chap...
Page 15 - Document Conventions
ONline Ethernet 10BASE-FB Module Installation and Operation Guide xv Document Conventions The following document conventions are used in this manuall: Convention Indicates Example Courier text User input In the Agent Information Form, enter MIS in the New Contact field. System output After pressing ...
Page 16 - Related Documents; Com Documents
xvi ONline Ethernet 10BASE-FB Module Installation and Operation Guide Related Documents This section provides information on supporting documentation, including: ❑ 3Com Documents ❑ Reference Documents 3Com Documents The following documents provide additional information on 3Com products: 17-Slot ONl...
Page 17 - Reference Documents
ONline Ethernet 10BASE-FB Module Installation and Operation Guide xvii 6-Slot ONline System Concentrator Installation and Operation Guide – Explains how to install, operate, and manage the 3Com ONline 6-Slot System Concentrator. ONline Ethernet Management Module Installation and Operation Guide – De...
Page 19 - Introduction
Introduction 1 - 1 1 Introduction This chapter introduces you to the: ❑ 3Com ONline™ Ethernet Port-Switching 10BASE-FB Modules (5102M-FBP and 5104M-FBP) ❑ 3Com ONline™ Ethernet 10BASE-FB Module (5104M-FB1) The modules are referred throughout this guide as the 10BASE-FB Modules. Information in this g...
Page 20 - 0BASE-FB Module Descriptions
1 - 2 ONline Ethernet 10BASE-FB Module Installation and Operation Guide 10BASE-FB Module Descriptions The ONline Ethernet Port-Switching 10BASE-FB Module is a 2- or 4-port, Ethernet fiber module designed for 3Com ONline System Concentrators. The ONline Ethernet 10BASE-FB Module is a 4-port, Ethernet...
Page 22 - Theory of Operation
1 - 4 ONline Ethernet 10BASE-FB Module Installation and Operation Guide 10BASE-FB Compliance The ONline Ethernet Port-Switching 10BASE-FB Modules and the ONline Ethernet 10BASE-FB Module are fully compliant with the IEEE 10BASE-FB fiber standard. The IEEE ratification of the 10BASE-FB standard valid...
Page 24 - Compatibility With Other Ethernet Fiber Products
1 - 6 ONline Ethernet 10BASE-FB Module Installation and Operation Guide Compatibility With Other Ethernet Fiber Products The 10BASE-FB Modules are compatible with the 3Com products outlined in Table 1-1. From the backplane interface, you can also connect the 10BASE-FB Modules to other Ethernet modul...
Page 26 - Understanding the General Rules; Rules for Configuring a Network
2 - 2 ONline Ethernet 10BASE-FB Module Installation and Operation Guide Understanding the General Rules This section describes general rules for configuring an Ethernet network using fiber as the backbone medium. It also provides rules to ensure that your network configuration conforms to distance l...
Page 29 - Equivalent Fiber Distances
Designing and Expanding the Network 2 - 5 Equivalent Fiber Distances Equivalent fiber distance is the sum of both the incoming and outgoing module port signals. Different products, however, have different equivalent distances. Table 2-2 lists the equivalent fiber distance of 3Com ONline LAN products...
Page 30 - Determining Maximum Fiber Link Distances
2 - 6 ONline Ethernet 10BASE-FB Module Installation and Operation Guide Determining Maximum Fiber Link Distances This section describes how to calculate the maximum allowable link distances between two fiber ports. To do this, you must know the following information: ❑ 10BASE-FB optical power budget...
Page 31 - Calculating Maximum Link Distance
Designing and Expanding the Network 2 - 7 The following tables assist you in obtaining this information: ❑ Table 2-3 - Lists the optical power budget for the 10BASE-FB Module ❑ Table 2-6 - List typical losses for connector and splice insertion loss ❑ Table 2-7 - Lists typical losses for various fibe...
Page 35 - Optical Fiber Loss
Designing and Expanding the Network 2 - 11 Table 2-6 shows the range of loss and the typical loss as a result of splices. Optical Fiber Loss Even though fiber optic cable can carry light signals over a long distance, optical power loss is a significant factor. Check your cable manufacturer's rating ...
Page 36 - Maximum Link Distance Calculation
2 - 12 ONline Ethernet 10BASE-FB Module Installation and Operation Guide Maximum Link Distance Calculation The following examples use the information provided in the previous pages to calculate the maximum allowable fiber optic link distance between two ports. Example: 1700 Meter Fiber Link With Mec...
Page 38 - Choosing a Network Backbone Cabling Structure
2 - 14 ONline Ethernet 10BASE-FB Module Installation and Operation Guide 3. Use Table 2-7 to determine the worst case loss for the 50/125 fiber cable (2000 meters x 5 dB = 10.0 dB). Add the dB losses to determine total path loss. The total path loss is 11.5 dB. The 11.5 dB optical loss exceeds the o...
Page 40 - Serial Configuration
2 - 16 ONline Ethernet 10BASE-FB Module Installation and Operation Guide Serial Configuration Use a serial configuration (shown in Figure 2-4) for smaller diameter networks that are not expected to grow. Serial configurations reduce the overall network diameter by 190 meters for each concentrator in...
Page 41 - 0BASE-FB Module Configurations
Designing and Expanding the Network 2 - 17 10BASE-FB Module Configurations The theoretical maximum diameter of an all fiber Ethernet network is limited to 4.2 km as defined by the 51.2 µ sec slottime that is specified for the round trip delay budget set by the IEEE 802.3 CSMA/CD protocol. (Thus, poi...
Page 43 - Network Distance Calculation Examples
Designing and Expanding the Network 2 - 19 Network Distance Calculation Examples The following examples demonstrate how to calculate network distances for various all-fiber networks. Example: Network With 3 Concentrators Figure 2-6 shows a network with 3 concentrators. Figure 2-6. Network With 3 Con...
Page 48 - Fiber Backbone, Coaxial Connection
2 - 24 ONline Ethernet 10BASE-FB Module Installation and Operation Guide Fiber Backbone, Coaxial Connection When connecting Thick or Thin Ethernet segments to an ONline network, use an: ❑ ONline Ethernet Bridge Module ❑ ONline Ethernet Repeater Module ❑ External bridge or repeater If you use a repea...
Page 50 - Fault-Tolerant Configurations; Configuring Ports for Fault Tolerance
2 - 26 ONline Ethernet 10BASE-FB Module Installation and Operation Guide Fault-Tolerant Configurations This section contains descriptions of the redundancy features built into the ONline 10BASE-FB Modules. You can implement link redundancy between concentrators using the port redundancy switch setti...
Page 51 - Setting Redundancy
Designing and Expanding the Network 2 - 27 Setting Redundancy When you enable redundancy between two ports, the ports are automatically enabled. ❑ Port 1 (or 3) as the primary link, which passes data. ❑ Port 2 (or 4) as the redundant link, which does not pass data in either direction. However, the l...
Page 53 - Implementing Total Backbone Fault Tolerance
Designing and Expanding the Network 2 - 29 If the primary link experiences a local or remote fault (except Low Light): ❑ The backup link activates within 10 milliseconds ❑ The primary ports disconnect (that is, they do not pass data to and from the concentrator) However, primary port diagnostics con...
Page 58 - Precautionary Procedures
3 - 2 ONline Ethernet 10BASE-FB Module Installation and Operation Guide Note: Read the precautionary procedures before unpacking the module. Precautionary Procedures Electrostatic discharge (ESD) can damage static-sensitive devices on circuit boards. Follow these precautions when you handle the 10BA...
Page 59 - Unpacking Procedures
Installing and Operating the Module 3 - 3 Unpacking Procedures When unpacking your 10BASE-FB Module: 1. Verify that the 10BASE-FB Module is the correct model by matching the model number listed on the side of the shipping carton to the model number you ordered (Model Numbers 5102M-FBP, 5104M-FBP, or...
Page 60 - Quick Installation
3 - 4 ONline Ethernet 10BASE-FB Module Installation and Operation Guide Quick Installation Table 3-1 outlines the steps for installing your 10BASE-FB Module. Table 3-1. Quick Installation Procedures Step Procedure Section Title 1 Verify that your network complies with the basic rules for network des...
Page 61 - Setting the Dip Switches
Installing and Operating the Module 3 - 5 Setting the Dip Switches The 10BASE-FB Modules have two 10-position dip switches (S1 and S2) located on the board. Figure 3-1 shows the dip switches on the 10BASE-FB Modules and the factory settings. ❑ Dip switch S1 on the Port-Switching Module differs from ...
Page 63 - Setting Dip Switch S1
Installing and Operating the Module 3 - 7 Setting Dip Switch S1 The S1 dip switch on the 10BASE-FB Modules have 10 switches. These switches allow you to enable or disable redundancy between ports 1 & 2 and 3 & 4. The S1 dip switch on the: ❑ Port-Switching 10BASE-FB Module allows you to - ass...
Page 65 - Setting Dip Switch S2
Installing and Operating the Module 3 - 9 Setting Dip Switch S2 Dip switch S2 on the 10BASE-FB Modules have 10 switches. These switches allow you to: ❑ Enable high or normal optical power for each port ❑ Enable or disable any of the four ports ❑ Enable or disable low light detection for the module T...
Page 66 - Installing the Module
3 - 10 ONline Ethernet 10BASE-FB Module Installation and Operation Guide Installing the Module You do not need to power down the ONline System Concentrator to install the 10BASE-FB Modules. You can insert or remove the module while the concentrator is operating (this is called a hot swap ). To insta...
Page 69 - Configuring the Module
Installing and Operating the Module 3 - 13 ❑ 3Com Fault-Tolerant 10BASE-FB Transceiver Make sure that the transmit fiber at one end always connects to a receive port at the other end. Caution: Do not connect this module to an ONline 10BASE-FL Module or to any other product that is not compatible wit...
Page 70 - Enabling Ports
3 - 14 ONline Ethernet 10BASE-FB Module Installation and Operation Guide When an ONline management module is installed in a concentrator, all of the dip switch settings on the 10BASE-FL Module are overridden. When you first install the module: 1. The network (channel) defaults to isolated mode. The ...
Page 71 - Selecting a Network
Installing and Operating the Module 3 - 15 Selecting a Network Both models of the Port-Switching Module (Model Numbers 5102M-FBP or 5104M-FBP) support Port-Switching technology. This feature enables you to assign each port on the module to any of three Ethernet networks (or isolated) on the ONline S...
Page 72 - Enabling Port Redundancy
3 - 16 ONline Ethernet 10BASE-FB Module Installation and Operation Guide Enabling Port Redundancy You can enable port redundancy in one of the following ways: ❑ If you have network management, you can enable or disable main port redundancy between any two ports on the 10BASE-FB Module. ❑ If you do n...
Page 73 - Enabling Low Light Warning; Enabling Optical Power
Installing and Operating the Module 3 - 17 When you set redundancy between two ports on the same 10BASE-FB Module and the primary port and the redundant port experience a link failure simultaneously, and you disable redundancy: ❑ The primary port is disabled ❑ The redundant port is enabled Enabling ...
Page 74 - Saving Module Configuration; Showing Module Configuration
3 - 18 ONline Ethernet 10BASE-FB Module Installation and Operation Guide The 10BASE-FB Module-Switching Module can be set to high or normal power through the dip switches (see Table 3-4). Saving Module Configuration To save the module and port settings to management module memory, use the following ...
Page 75 - Monitoring the Front Panel
Installing and Operating the Module 3 - 19 This display tells you the status of the specific port. It includes the management and dip switch settings from the board. The following command displays detailed information about the 10BASE-FB Module in slot 8 of the concentrator. ONline> show module 8...
Page 78 - Verifying LED and Network Assignments
Verifying LED and Network Assignments Once you install the module, verify its operation through the front panel of the ONline Controller Module. The Controller Module is equipped with an LED check button on the front panel. Use the LED check buttonto: ❑ Verify LED operation ❑ Verify network (channel...
Page 79 - Troubleshooting
Troubleshooting 4 - 1 4 Troubleshooting This chapter describes fault conditions and troubleshooting procedures for the ONline Ethernet 10BASE-FB Modules. This chapter contains the following sections: ❑ Troubleshooting Using the Port Activity LEDs ❑ Troubleshooting Using the Port Status LEDs ❑ Techni...
Page 80 - Troubleshooting Using the Port Activity LEDs
4 - 2 ONline Ethernet 10BASE-FB Module Installation and Operation Guide Troubleshooting Using the Port Activity LEDs If a port Activity LED does not light, use Table 4-1 to help troubleshoot the problem. Table 4-1. Troubleshooting Using the Port Activity LEDs LED State Possible Cause Corrective Acti...
Page 81 - Troubleshooting Using the Port Status LEDs
Troubleshooting 4 - 3 Troubleshooting Using the Port Status LEDs A blinking Port Status indicator is always a sign that the port detects a potential problem. Once a port detects a problem, you can further analyze the problem by counting the number of blinks. Table 4-2 provides troubleshooting sugges...
Page 85 - Technical Assistance
Troubleshooting 4 - 7 Technical Assistance You can receive assistance for installing and troubleshooting the 10BASE-FB Module by calling either your 3Com reseller or 3Com Technical Support. Be prepared to supply a representative with the following information: ❑ Description of the problem ❑ Steps yo...
Page 87 - Specifications
Specifications A - 1 A Specifications This appendix lists specifications for the Port-Switching 10BASE-FB Module and the 10BASE-FB Module. Specification differences between the Port-Switching 10BASE-FB Module and the 10BASE-FB Module are indicated. Specifications for the modules include: ❑ General S...
Page 88 - General Specifications
A - 2 ONline Ethernet 10BASE-FB Module Installation and Operation Guide General Specifications Table A-1 lists general specifications for the 10BASE-FB Module. Table A-1. General Specifications 10BASE-FB Module Model Numbers 5102M-FBP 5104M-FBP 5104M-FB1 Collision Detection 100% deterministic Config...
Page 89 - Optical Specifications; Transmitter Specifications
Specifications A - 3 Optical Specifications This section lists the optical specifications for the 10BASE-FB Module, including: ❑ Transmitter Specifications ❑ Receiver Specifications ❑ Supported Fiber Optic Cables ❑ Fiber Optic Interface Transmitter Specifications Light Source: GaA1As LED at waveleng...
Page 91 - Fiber Optic Interface; Power Requirements
Specifications A - 5 Fiber Optic Interface Table A-4 lists specifications for the fiber optic interface. Power Requirements Table A-5 lists power requirements for the 10BASE-FB Module. Table A-4. Fiber Optic Interface Specifications Data Rate 10 Mbps (million bits per second) Data Modulation Manches...
Page 93 - 0BASE-FB Cable and Connector Specifications
Specifications A - 7 ❑ 3Com Fault-Tolerant 10BASE-FB Transceiver - The 3Com Fault-Tolerant 10BASE-FB Transceiver (Model Number 5102T-FBFT) provides fault tolerance to-the-desktop. The transceiver connects an existing network to a fault-tolerant fiber backbone network. It also provides a fault-tolera...
Page 94 - Connecting Fiber Cables
A - 8 ONline Ethernet 10BASE-FB Module Installation and Operation Guide 10BASE-FB Connectors The 10BASE-FB Modules are available in both SMA-type, ST-type, and FC-type fiber connectors for direct connection to a Fiber Ethernet LAN. When you order a 10BASE-FB Module, use the part numbers listed in Ta...
Page 95 - Technical Support; On-line Technical Support
Technical Support B - 1 B Technical Support 3Com provides easy access to technical support information through a variety of services. This appendix describes the following services: ❑ On-line Technical Support ❑ Support from Your Network Supplier ❑ Support from 3Com ❑ Returning Products for Repair ❑...
Page 96 - Email Technical Support; Support from Your Network Supplier
B - 2 ONline Ethernet 10BASE-FB Module Installation Guide Email Technical Support You can contact the Integrated Systems Division (formerly Chipcom) on the Internet for technical support using the e-mail address [email protected]. World Wide Web Site You can access the latest networking informati...
Page 97 - Support from 3Com
Technical Support B - 3 When you contact your network supplier for assistance, have the following information ready: ❑ Diagnostic error messages ❑ A list of system hardware and software, including revision levels ❑ Details about recent configuration changes, if applicable If you are unable to contac...
Page 98 - Returning Products for Repair
B - 4 ONline Ethernet 10BASE-FB Module Installation Guide For access to customer service for all 3Com products, call (800) 876-3266. You can also contact the Integrated Systems Division (ISD) on the Internet by using the e-mail address [email protected]. Returning Products for Repair A product se...
Page 99 - Com Technical Publications
Technical Support B - 5 3. Enter your full Internet e-mail address as the password (for example, [email protected] ). 4. Change to the mib or schema directory using the cd /pub/mibs or cd /pub/mibs/schemas command. 5. To view the 3Com MIB, OID, or schema entries, enter the dir command. ❑ To pause the...
Page 101 - Index; Numerics
Index 1 Index Numerics 10BASE-FB Compliance , 1-4 Standard , 1-4 10BASE-FB Fiber Transceiver , 1-2 10BASE-FB Links Determine Maximum Distance , 2-6 10BASE-FB Module Assign a Network , 3-15 Configuring , 3-13 Descriptions , 1-2 Enable and Disable Ports , 3-14 Fault-Tolerant Configuration , 2-26 Featu...
