FOMIM-32/36/38 FIBER OPTIC MEDIA INTERFACE MODULE USER’S GUIDE
notice Page i Monday, July 8, 1996 4:38 PM NOTICE Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made. The hardware, firmware, or software described in this manual is subject to change without notice.
notice Page ii Monday, July 8, 1996 4:38 PM Notice DOC NOTICE This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.
notice Page iii Monday, July 8, 1996 4:38 PM Notice CABLETRON SOFTWARE PROGRAM LICENSE 1. LICENSE. You have the right to use only the one (1) copy of the Program provided in this package subject to the terms and conditions of this License Agreement. You may not copy, reproduce or transmit any part of the Program except as permitted by the Copyright Act of the United States or as authorized in writing by Cabletron. 2. OTHER RESTRICTIONS.
notice Page iv Monday, July 8, 1996 4:38 PM Notice DECLARATION OF CONFORMITY Application of Council Directive(s): Manufacturer’s Name: Manufacturer’s Address: European Representative Name: European Representative Address: Conformance to Directive(s)/Product Standards: Equipment Type/Environment: 89/336/EEC 73/23/EEC Cabletron Systems, Inc. 35 Industrial Way PO Box 5005 Rochester, NH 03867 Mr. J.
CONTENTS CHAPTER 1 INTRODUCTION 1.1 Using This Manual....................................................................... 1-1 1.2 Document Conventions ............................................................... 1-3 1.3 Fiber Optic Media Interface Modules........................................... 1-3 1.3.1 Distance and Cable Type ............................................... 1-3 1.3.2 Multi Media Access Centers ........................................... 1-4 1.4 LANVIEW Status Monitoring System ...
Contents vi FOMIM User’s Guide
CHAPTER 1 INTRODUCTION Welcome to the Cabletron Systems FOMIM-32/36/38 Fiber Optic Media Interface Module User’s Guide. We have designed this manual to serve as a simple installation and reference guide for the FOMIM, and to explain the capabilities and special features of the module. Before using the FOMIM, you need to carefully read through this manual to gain a full understanding of the FOMIM and its capabilities.
Chapter 1: Introduction Figure 1-1 The FOMIMs It is assumed that you have a general working knowledge of Ethernet or IEEE 802.3 type data communications networks and their physical layer components.
Document Conventions 1.2 DOCUMENT CONVENTIONS The following conventions are used throughout this document: NOTE ! Note symbol. Calls the reader’s attention to any item of information that may be of special importance. Caution symbol. Contains information essential to avoid damage to the equipment. CAUT ION Warning symbol. Warns against an action that could result in equipment damage, personal injury or death. 1.
Chapter 1: Introduction 1.3.2 Multi Media Access Centers The Cabletron Systems Fiber Optic Media Interface Modules are designed to be installed into the Cabletron Systems Multi Media Access Center (MMAC). The modular design of the MMAC allows the FOMIM to co-exist with other Media Interface Modules (MIMs) to provide a variety of different media connections on any one point. Each packet entering the FOMIM is repeated by the repeater module in the MMAC.
LANVIEW Status Monitoring System LANVIEW LEDs Figure 1-2 LANVIEW LEDs The following discusses the function of each LANVIEW LED on the FOMIM (Figure 1-2). Note that there is one Link OK (LNK) and one Receive (RCV) LED for each port on the MIM, as well as one Error (ERR) and one Collision (CLN) LED for the entire MIM.
Chapter 1: Introduction Error (ERR) LED When lit, this red LED indicates the temperature within the MMAC chassis has risen to 40°C or greater. The FOMIM alerts the management board, and the FOMIM in turn receives a signal to light the LED. 1.5 RELATED MANUALS The manuals listed below should be used to supplement the procedures and other technical data provided in this manual. The procedures contained in these manuals will be referenced, rather than repeated, in this manual.
Getting Help • The serial and revision numbers of all Cabletron Systems products in the network • The device history (i.e., have you returned the device before, is this a recurring problem, etc.
Chapter 1: Introduction 1-8 FOMIM User’s Guide
CHAPTER 2 NETWORK REQUIREMENTS AND INSTALLATION This chapter begins with network design guidelines in Section 2.1, Network Cable Requirements, that must be met before installing the module in a network. It then provides instructions for installing the Cabletron Systems Fiber Optic Media Interface Module into the MMAC family of modular hubs. 2.1 NETWORK CABLE REQUIREMENTS When connecting fiber optic segments to the FOMIM, you must follow the network guidelines listed below.
Chapter 2: Network Requirements and Installation Propagation delay is the amount of time it takes a packet to travel from the sending device to the receiving device. Total propagation delay allowed for the entire network is 25.6 µs. If the total propagation delay between any two nodes on the network exceeds 25.6 µs, then bridges should be used. • When using single mode fiber optic cable, segment lengths up to 5 km are possible if system budgets are met. 2.
Installing the FOMIM into the MMAC 2.3 INSTALLING THE FOMIM INTO THE MMAC You can easily install the FOMIM into a Multi Media Access Center with a Flexible Network Bus (MMAC-FNB). Install the FOMIM into the MMAC as follows: 1. Power down the MMAC hub. 2. Remove any chassis safety bars present on the front of the MMAC hub. 3. Slide the FOMIM (Figure 2-1) into the card cage of the MMAC hub. Be sure that the card is properly aligned in the top and bottom slots of the card cage.
Chapter 2: Network Requirements and Installation 2.4 CONNECTING FIBER OPTIC CABLING TO THE FOMIM Each fiber optic link consists of two strands of fiber optic cabling: the transmit (TX) and the receive (RX). The transmit strand from a module port connects to the receive port of a fiber optic Ethernet device at the other end of the segment. The receive strand of the applicable port on the module connects to the transmit port of the fiber optic Ethernet device.
Connecting Fiber Optic Cabling to the FOMIM 4. At the other end of the fiber optic cable, attach the fiber pair to the transmit and receive ports of the device. If link indicators are present for the fiber optic connection, check that they are ON. If an indicator is present but not ON, that port does not have a valid link. Perform each of the following steps until you reach a resolution of the problem and achieve a link. • Check that the device at the other end of the link is ON.
Chapter 2: Network Requirements and Installation 2-6 FOMIM User’s Guide
CHAPTER 3 TESTING AND TROUBLESHOOTING This chapter lists the installation checkout procedures necessary to verify that the segments connected to your FOMIM are operating properly. The chapter concludes with a description of the LANVIEW LEDs and their use in troubleshooting physical layer network problems. 3.
Chapter 3: Testing and Troubleshooting 5. Disconnect the jumpers from the barrel connector. 6. Using the jumper, attach the optical power meter to one end of one strand of the link segment. 7. Using the other jumper, attach the other end of the same strand to the optical source unit. 8. Note the reading on the optical power meter. This is your test level. 9. Subtract the reference level found in Step 4 from the test level to find your dB loss for the fiber optic link segment, i.e.
Pre-Installation Test 4. If the LEDs are not lit, reverse the cable ends back to their original positions, and contact Cabletron Systems Technical Support for assistance. 3.2 PRE-INSTALLATION TEST Before installing the FOMIM in a live network, test the module in a controlled situation to ensure that it is repeating packets. With the FOMIM installed in an MMAC hub with a Repeater module (e.g., IRM3), this test can be performed with two workstations (Figure 3-1) by completing the following steps: 1.
Chapter 3: Testing and Troubleshooting NOTE A “ping” test will verify that the module is operating properly. However, both server and client workstations must have their own unique IP Addresses. If failures occur, refer to Section 3.3, Using LANVIEW, in this chapter. MMAC-M3FNB with IRM3 File Server Workstation 0494109 Client Workstation Figure 3-1 Pre-Installation Test 3.3 USING LANVIEW The FOMIM uses Cabletron Systems built-in visual diagnostic and status monitoring system called LANVIEW.
Using LANVIEW Table 3-1 LANVIEW Troubleshooting Error Condition/Recommended Action Led Color Description LNK (Link/ Fiber Port) Green When on, a link is established between the FOMIM Fiber port and the fiber device at the other end of the segment. LED is on as long as the link is maintained. If off, the link between the port and fiber device has been broken. When flashing the FOMIM is receiving data packets from segments connected to the associated port.
Chapter 3: Testing and Troubleshooting 3-6 FOMIM User’s Guide
APPENDIX A FOMIM SPECIFICATIONS The operating specifications for the Cabletron Systems FOMIM are included in this Appendix. Cabletron Systems reserves the right to change these specifications at any time without notice. A.1 OPERATING SPECIFICATIONS Table A-1 Fiber Optic Interface (All Ports) Transceiver Built-In Cabletron Systems FOT-F3 Parameter Typical Minimum Maximum Receive Sensitivity -31.0 dBm -36.0 dBm -30.0 dBm Max. Receive Input Power -14.0 dBm Transmitter Power at 25°C Into 8.
Appendix A: FOMIM Specifications Table A-2 Fiber Optic Interface (All Ports) Parameter Typical Minimum Maximum Transmitter Peak Wave Length 1310 nm 1265 nm 1380 nm Spectral Width 95 nm Rise Time 3.0 ns 2.7 ns 5.0 ns Fall Time 2.5 ns 2.2 ns 5.0 ns Duty Cycle 50.1% 49.6% 50.7% Bit Error Rate Better than 10-10 NOTES 125 nm The transmitter power levels given above are Peak Power Levels after optical overshoot.
Agency Approvals A.3 AGENCY APPROVALS Designed in accordance with UL478, UL910, NEC 725-2(b), CSA, IEC, TUV, VDE Class A. Meets FCC Part 15, Class A limits. It is the responsibility of the person who sells the system of which the FOMIM will be a part to ensure that the total system meets allowed limits of conducted and radiated emissions. PHYSICAL PROPERTIES Dimensions: 34.04 D x 29.21 H x 5.08 W cm (13.4 D x 11.5 H x 2.0 W in) Weight: FOMIM-36: 0.57 kg (1.25 lb) FOMIM-32: 0.86 kg (1.
Appendix A: FOMIM Specifications A-4 FOMIM User’s Guide
INDEX C S Cable connecting 2-4 distance 1-3 requirements 2-1 CLN LED 1-5 Conventions 1-3 ST connectors 2-5 D T Testing pre-installation 3-3, 3-4 U Using LANVIEW 3-4 Design guidelines 2-1 E ERR LED 1-5 F FOMIM installing 2-3 specifications A-1 unpacking 2-2 H Help 1-6 L LANVIEW location 1-4 troubleshooting 3-5 Link testing 3-1 LNK LED 1-5 M MMAC description 1-3 R RCV LED 1-5 Related manuals 1-5 FOMIM User’s Guide Index-1
Index Index-2 FOMIM User’s Guide
