3Com 5104M-FL1 - Manual

ONline Ethernet 10BASE-FL Module Installation and Operation Guide xiii How to Use This Guide This guide is designed to help you understand the features, indicators, and installation procedure for the 3Com ONline™ Ethernet 10BASE-FL Module(Model Number 5104M-FL1). Information on troubleshooting and d...

xiv ONline Ethernet 10BASE-FL Module Installation and Operation Guide Structure of This Guide This guide contains the following chapters and appendix: Chapter 1 - Introduction – Introduces the principal features of the ONline Ethernet 10BASE-FL Module. Chapter 2 - Designing and Expanding the Network...

ONline Ethernet 10BASE-FL Module Installation and Operation Guide xv Document Conventions This section describes document conventions. Text Conventions Text Convention Example System output Courier text After you click Apply, the system displays the message Transmitting Data . User input In the Agen...

xvi ONline Ethernet 10BASE-FL Module Installation and Operation Guide Notes, Cautions, and Warnings A note indicates information that is important: Note: Use STP lobe cables for your system. A caution indicates a condition that may damage software or hardware: Caution: Do not put your installation d...

ONline Ethernet 10BASE-FL Module Installation and Operation Guide xvii 17-Slot ONline System Concentrator Installation and Operation Guide – Explains how to install, operate, and manage the 3Com ONline 17-Slot System Concentrator (Models 5017C-LS and 5017C with load sharing). 6-Slot ONline System Co...

Introduction 1 - 1 1 Introduction This chapter introduces you to the 3Com ONline™ Ethernet 10BASE-FL Module (Model Number 5104-FL1) and provides an overview of its features. This chapter contains the following sections: ❑ 10BASE-FL Module Description ❑ 10BASE-FL and FOIRL IEEE Standards Comparison ❑...

1 - 2 ONline Ethernet 10BASE-FL Installation and Operation Guide 10BASE-FL Module Description The ONline Ethernet 10BASE-FL Module is a 4-port, fiber repeater module designed for the 3Com ONline System Concentrator. The module provides 10BASE-FL backbone connectivity for Ethernet local area networks...

Introduction 1 - 3 10BASE-FL and FOIRL IEEE Standards Comparison 10BASE-FL is a subpart of a IEEE standard called 10BASE-F (802.3, section 18), which standardizes three types of Ethernet-over-fiber optic cable. Table 1-1 describes each 10BASE-F standard Theory of Operation Use the 10BASE-FL Module t...

2 - 2 ONline Ethernet 10BASE-FL 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 limitati...

Designing and Expanding the Network 2 - 5 LAN Equivalence LAN equivalence is the sum of both the incoming and outgoing module port signals. Different modules, however, have different equivalent distances. Table 2-2 lists the LAN product equivalent distances. Table 2-2. LAN Product Equivalent Distanc...

2 - 6 ONline Ethernet 10BASE-FL Installation and Operation Guide Determining Maximum 10BASE-FL Link Distances This section describes how to calculate the maximum allowable link distances between two 10BASE-FL ports. To do this, you must know the following information: ❑ 10BASE-FL Module optical (lin...

Designing and Expanding the Network 2 - 7 Determining Link Budget As a network planner or installer, account for worst case losses through the optical connection, end-to-end, to ensure link integrity. The optical power budget represents a “worst case” assuming the transmitter is transmitting at the ...

2 - 8 ONline Ethernet 10BASE-FL Installation and Operation Guide Note: The values in Table 2-3 are peak power values. You determine average optical power by subtracting 3 dBm from the peak value. All of the examples provided in the pages that follow refer to peak optical power. Note that higher opti...

Designing and Expanding the Network 2 - 9 In such cases, some attenuation is required to prevent this problem. This attenuation is usually covered by: ❑ A moderate link length ❑ The fiber optic connectors Splicing Many fiber optic installations employ the use of patch panels to manage expansion and ...

2 - 10 ONline Ethernet 10BASE-FL Installation and Operation Guide Table 2-4 shows the range of loss and the typical loss as a result of splice. 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 ...

Designing and Expanding the Network 2 - 11 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: Fiber Link With Mechanical Splice In the following example, ...

Designing and Expanding the Network 2 - 13 Choosing a Network Backbone Cabling Structure Because of fiber's long-distance capabilities and immunity to noise, 3Com strongly recommends using fiber as the backbone. You can choose between two fundamental configuration topologies when connecting your net...

2 - 14 ONline Ethernet 10BASE-FL Installation and Operation Guide . Figure 2-3. Star-Wiring Configuration Serial Configuration Use a serial configuration (Figure 2-4) for smaller diameter networks that are not expected to grow. Serial configurations reduce the overall network diameter (by 560 meters...

Designing and Expanding the Network 2 - 15 . Figure 2-4. Serial Configuration Using 10BASE-FL Modules 10BASE-FL 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-dela...

2 - 18 ONline Ethernet 10BASE-FL Installation and Operation Guide Network Distance Calculation Examples The following examples demonstrate how to calculate network distances for various all-10BASE-FL networks. Example: A Network with 3 Concentrators Refer to Figure 2-5, which shows a network with 3 ...

Designing and Expanding the Network 2 - 25 To determine if the network configuration in Figure 2-8 is legal: 1. Use 4200 meters as the maximum network diameter as defined by the 802.3 specification. 2. Subtract the equivalent fiber distance for each 10BASE-FL Module in the signal path between Transc...

2 - 28 ONline Ethernet 10BASE-FL Installation and Operation Guide Fault-Tolerant Configurations This section contains descriptions of the redundancy features built into the ONline 10BASE-FL Module. You can implement link redundancy between concentrators using the port redundancy switch settings on t...

Designing and Expanding the Network 2 - 29 ❑ Remote Failure Signaling Configuration - If redundancy is enabled at the other end of the fiber link, you must enable remote failure signaling for all connecting 10BASE-FL Module ports. Implementing Backbone Cable Plant Fault Tolerance You can enable redu...

Designing and Expanding the Network 2 - 31 Remote Failure Signaling In any redundant link path, you can designate (that is, activate) only one end as a redundant port pair (1-2 or 3-4). You must enable remote failure signaling (RFS) if ports are connected to fiber with redundancy enabled at the othe...

2 - 32 ONline Ethernet 10BASE-FL Installation and Operation Guide Implementing Total Backbone Fault Tolerance You can add a backup ONline System Concentrator to provide total backbone fault tolerance and link redundancy for your backbone network. As shown in Figure 2-11, if the primary concentrator ...

3 - 2 ONline Ethernet 10BASE-FL Installation and Operation Guide Precautionary Procedures Electrostatic discharge (ESD) can damage static-sensitive devices on circuit boards. Follow these precautions when you handle the 10BASE-FL Module: ❑ Do not remove the board from its anti-static shielding bag u...

Installing and Operating the Module 3 - 3 4. Keep the carton and anti-static bag in which your module was shipped for repackaging the module for storage or shipment. 5. Record the serial number of your 10BASE-FL Module. A log and other information specific to your modules is included in the ONline S...

3 - 4 ONline Ethernet 10BASE-FL Installation and Operation Guide Setting the Dip Switches The 10BASE-FL Module has two 8-position dip switches (SW1 and SW2) located on the rear of the board. Figure 3-1 shows the location and default settings of the SW1 and SW2 dip switches. You may need to reconfigu...

Installing and Operating the Module 3 - 5 Figure 3-1. 10BASE-FL Module Dip Switch Locations Setting Dip Switch SW1 The SW1 dip switch on the 10BASE-FL Module contains 8 dip switches. Switches 7 and 8 are not functional. The remaining switches allow you to: ❑ Enable or disable redundancy between port...

Installing and Operating the Module 3 - 7 Setting Dip Switch SW2 The SW2 dip switch on the 10BASE-FL Module contains 8 dip switches. Switches 7 and 8 are not functional. The remaining switches allow you to: ❑ Enable or disable each of the ports ❑ Assign the module to a channel Table 3-3 lists the fu...

3 - 8 ONline Ethernet 10BASE-FL Installation and Operation Guide Table 3-4 lists the functions and settings for switches 5 and 6. For a definition of each dip switch function, refer to the Configuring the Module section in this chapter. Installing the Module You do not need to power down the ONline ...

Installing and Operating the Module 3 - 11 Make sure that the transmit fiber at one end always connects to a receive port at the other end. Caution: Do not connect the 10BASE-FL Module to an ONline Ethernet Fiber Module, to a 10BASE-FB module, or to any other module or transceiver that is not FOIRL-...

3 - 12 ONline Ethernet 10BASE-FL Installation and Operation Guide When you first install the module: 1. The network (channel) defaults to isolated mode. The ports are automatically disabled so that unapproved users cannot be added. Therefore, you must enable the ports you wish to use and set the mod...

Installing and Operating the Module 3 - 13 Selecting a Network The ONline 10BASE-FL Module is equipped with the technology to work with the ONline Concentrator's unique TriChannel™ Architecture. This feature lets you assign the module to any of three networks (or none) on the ONline System Concentra...

3 - 14 ONline Ethernet 10BASE-FL Installation and Operation Guide For example, when you enable redundancy: 1. Port 1 becomes the primary link and port 2 is the redundant link. 2. If the primary link (port 1) fails, the redundant link (port 2) is engaged automatically, thus preventing a network failu...

Installing and Operating the Module 3 - 15 Enabling Remote Failure Signaling Due to the nature of the 10BASE-FL standard, the receive path of a redundant port can detect no light and partition errors, but the transmit path cannot detect these errors. Remote Failure Signaling (RFS) provides a way for...

3 - 16 ONline Ethernet 10BASE-FL Installation and Operation Guide To enable RFS for a port, issue the following management command: SET PORT { slot.port } MODE REMOTE_FAILURE_SIGNALING Saving Module Configuration To save the module and port settings to management module memory, issue the following c...

Installing and Operating the Module 3 - 17 This display tells you the status of the specific port. It includes the management module and dip switch settings from the board. For more information on the SHOW commands, refer to the: ❑ Appropriate ONline Management Module Installation and Operation Guid...

Installing and Operating the Module 3 - 19 Table 3-5 describes how to interpret the 10BASE-FL Module LEDs. Table 3-5. Interpreting the 10BASE-FL Module LEDs LED Name Color State Indicates Activity Yellow Off No packets are received on the fiber segment. (Ports 1-4) On Constant activity on the fiber ...

3 - 20 ONline Ethernet 10BASE-FL Installation and Operation Guide Verifying the 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 th...

Troubleshooting 4 - 1 4 Troubleshooting This chapter describes fault conditions and troubleshooting suggestions for the 10BASE-FL Module. This chapter contains the following sections: ❑ Troubleshooting Using the Port Activity LEDs ❑ Troubleshooting Using the Port Status LEDs ❑ RFS Troubleshooting ❑ ...

4 - 2 ONline Ethernet 10BASE-FL Installation and Operation Guide Troubleshooting Using the Port Activity LEDs If a port Activity LED does not light, use the Table 4-1 to help troubleshoot the problem. Table 4-1. Troubleshooting Using the Port Activity LEDs LED Name LED State Possible Cause Correctiv...

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...

Troubleshooting 4 - 5 RFS Troubleshooting When you enable redundancy for a port on one 10BASE-FL Module (splices), you must enable Remote Failure Signaling (RFS) on the corresponding port of the remote 10BASE-FL Module to which it is connected. If you accidentally enable RFS on both sides of a 10BAS...

Specifications A - 1 A Specifications This appendix lists specifications for the 10BASE-FL Module, including: ❑ General Specifications ❑ Optical Specifications ❑ Power Requirements ❑ Environmental Specifications ❑ Mechanical Specifications ❑ 10BASE-FL Cable and Connector Specifications

A - 2 ONline Ethernet 10BASE-FL Installation and Operation Guide General Specifications Table A-1 lists general specifications for the 10BASE-FL Module. Table A-1. General Specifications 10BASE-FL Module Model number 5104M-FL1 Collision Detection 100% deterministic Configuration Rules Compliant with...

Specifications A - 3 Optical Specifications This section lists the optical specifications for the 10BASE-FL Module, including: ❑ Transmitter Specifications ❑ Receiver Specifications ❑ Supported Fiber Optic Cables ❑ Fiber Optic Interface Transmitter Specifications Light Source: GaA1As LED at waveleng...

A - 4 ONline Ethernet 10BASE-FL Installation and Operation Guide Receiver Specifications Table A-3 lists receiver specifications for the 10BASE-FL Module. Supported Fiber Optic Cables You can use the following fiber optic cables with the 10BASE-FL Module: ❑ 50/125 ❑ 62.5/125 ❑ 85/125 ❑ 100/140 The f...

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-FL Module. Table A-4. Fiber Optic Interface Specifications Data Rate 10 Mbps (million bits per second) Data Modulation Manches...

A - 6 ONline Ethernet 10BASE-FL Installation and Operation Guide Environmental Specifications Table A-6 lists electrical specifications for the 10BASE-FL Module. Mechanical Specifications Table A-7 lists mechanical specifications for the 10BASE-FL Module. Table A-6. Electrical Specifications Operati...

Specifications A - 7 10BASE-FL Cable and Connector Specifications This section contains information on 10BASE-FL and fiber products, cables, and connectors. Use the information in the following sections to ensure that the cables and connecting hardware meet requirements. In addition to the ONline Et...

A - 8 ONline Ethernet 10BASE-FL Installation and Operation Guide Fiber Connectors The 10BASE-FL Module is available in ST-, SMA-, and FC-type fiber connectors for direct connection to a Fiber Ethernet LAN. When you order the 10BASE-FL Module, use the part number listed in Table A-8 for the correct c...

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 ❑...

B - 2 Online Ethernet 10BASE-FL Installation and Operation 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 in...

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...

B - 4 Online Ethernet 10BASE-FL Installation and Operation 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 pro...

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...

Index 1 Index Numerics 10BASE-FL Links Determine Maximum Distance , 2-6, 2-7 10BASE-FL Module Assign a Network To , 3-12 Configuring , 3-11 Connections , 1-3, 3-10 Connectors , 1-2 Distance Limitations , 2-6, 2-7 Enable/Disable Ports , 3-12 Faceplate , 3-17 Features , 1-1, 1-2 Installing , 3-1, 3-8,...