FAST ETHERNET SWITCH MODULE (3H02-04 AND 3H08-04) USER GUIDE SEGMENT 1 OFFLINE SEGMENT 2 TX TX RX RX LK LK LK LK X TX RX QUAD FAST ETHERNET / 802.3 100BASE-TX (UTP) SEGMENT 4 TX RX X SEGMENT 1 OFFLINE SEGMENT 3 TX RX X SEGMENT 2 PWR X QUAD FAST ETHERNET / 802.
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 FCC NOTICE This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules.
Notice CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT IMPORTANT: Before utilizing this product, carefully read this License Agreement. This document is an agreement between you, the end user, and Cabletron Systems, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron software program (the “Program”) contained in this package. The Program may be contained in firmware, chips or other media.
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CONTENTS CHAPTER 1 INTRODUCTION 1.1 Using This manual....................................................................... 1-2 1.2 Overview...................................................................................... 1-3 1.3 3H02-04 FE Switch Module......................................................... 1-3 1.3.1 Connectors ..................................................................... 1-4 1.3.2 LEDs ............................................................................... 1-4 1.3.
Contents CHAPTER 6 ADDING/SWAPPING MODULES 6.1 Unpacking the Switch Module......................................................6-1 6.2 Adding a Switch Module ..............................................................6-1 6.3 Swapping a Switch Module ..........................................................6-2 APPENDIX A TECHNICAL SPECIFICATIONS APPENDIX B CABLES B.1 Types/Connectors ....................................................................... B-1 B.2 Cable Specifications ..................
CHAPTER 1 INTRODUCTION Welcome to Cabletron Systems Fast Ethernet Switch Module (3H02-04 and 3H08-04) User Guide. This manual provides information for configuring, monitoring, and maintaining the Fast Ethernet (FE) Switch Modules.
Chapter 1: Introduction 1.1 USING THIS MANUAL Read this manual to gain an understanding of the features and capabilities of the FE Switch Modules. A general knowledge of Ethernet and IEEE 802.3 type data communications networks and their physical layer components will be helpful when installing and using these devices. Chapter 1, Introduction, outlines the contents of this manual, briefly describes the features of the modules, related documents, and how to get help.
Overview 1.2 OVERVIEW Cabletron Systems Fast Ethernet Switch Modules connect the ATX hub to a maximum of four individual Ethernet IEEE 802.3 Local Area Networks (LANs). Through the ATX backplane, connectivity to other Fast Ethernet devices, as well as connectivity to FDDI, Token Ring, and Ethernet networks is supported. You can configure the module to support Transparent Spanning Tree, Source Routing, or Source Routing Transparent Bridging on each of the FDDI, Token Ring, or Ethernet ports of the ATX.
Chapter 1: Introduction 1.3.1 Connectors The 3H02-04 includes four 8-pin RJ45 receptacle connectors that you can attach directly to the network by using unshielded twisted-pair (UTP) cabling. The ATX power supply provides the power for the module. An internal receive/transmit pair crossover is provided in the second connector on each port. This means that when either a station or server is directly attached to a 3H02-04 port, you can choose to use either straight-through or crossover cabling.
3H08-04 FE Switch Module 1.4 3H08-04 FE SWITCH MODULE The 3H08-04 (Figure 1-3) provides connection for four independent 100BASE-FX LANs to the ATX backplane and packet processing engine (PPE). It includes processing circuitry for receiving and forwarding packets between the connected 100BASE-FX LANs within each module. The 3H08-04 contains several LEDs to indicate the module’s operational status. The 3H08-04 supports fiber optic and the IEEE 802.3 100BASE-FX specification. 1.4.
Chapter 1: Introduction 1.5 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. Tip symbol. Conveys helpful hints concerning procedures or actions. TIP ! 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.
1.6 RELATED MANUALS Use the following manuals to supplement the procedures and other technical data provided in this manual. The procedures contained in the following manuals are referenced where appropriate, but not repeated in this manual. • ATX User Guide • ATX MIB Reference Guide If you need internetworking reference material, you may find the following books helpful: • Interconnections, Bridges and Routers, Radia Perlman, Addison Wesley 1992.
Chapter 1: Introduction • A description of the failure • A description of any action(s) already taken to resolve the problem (e.g., changing mode switches, rebooting the unit, etc.) • A description of your network environment (layout, cable type, etc.) • Network load and frame size at the time of trouble (if known) • 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 2 CONNECTING TO THE NETWORK This chapter provides reference material and instructions that network administrators can use to configure the Fast Ethernet Switch Modules. For instructions on adding a switch module to the ATX, see Chapter 5, Adding/Swapping Modules. 2.1 POWER-UP LED SEQUENCE Watch the LED sequence during power-up. It takes about 1 minute for the ATX to complete the power-up diagnostics.
Chapter 2: Connecting to the Network 4. After a few seconds, the switch module reboots and the PROC LED comes on. 5. All other LED activity beyond this point is a function of the configuration and connection of the ATX. 2.2 CONNECTING TO A NETWORK To connect the switch module to a Fast Ethernet network, use the following types of Ethernet cable: • Unshielded Twisted Pair (UTP for 100BASE-TX) • Fiber (100BASE -FX) 2.2.
Connecting to a Network 2.2.2 Connecting the 3H08-04 FE Switch Module You can connect each of the four pairs of ST fiber ports on the 3H08-04 to a 100BASE-FX port on a device such as a hub, using fiber optic cable. Each fiber segment has a pair of female ST connectors clearly marked as “RX” and “TX.” Attach the transmit (TX) connector on the 3H08-04 to the receive (RX) connector on the attached device.
Chapter 2: Connecting to the Network Page 2-4 FE Switch Module User Guide
CHAPTER 3 CONFIGURING You can configure your FE Switch Modules using the following tools: • Local Console Manager (LCM), which lets you monitor, manage, and configure your ATX through an out-of-band RS-232 connection • Any SNMP-based network management system For more details about Local Console Management, see your ATX User Guide. For details about the other network management software, see the product’s documentation.
Chapter 3: Configuring 3.1 CONNECTING THE LOCAL CONSOLE MANAGER Connect the Local Console Manager to the ATX. For specific instructions, see Chapter 2, Connecting to the Network of the ATX User Guide. Make sure the ATX is powered on and press a few times. When the ATX> prompt is displayed, the Local Console Manager is ready to use. The default password is . 3.
CHAPTER 4 MONITORING 4.1 DISPLAYING SWITCH MODULE PORT STATUS Using Local Console Manager, you can get the status of the switch module ports by typing status for the appropriate switch module port. A sample display is shown below. ATX >status 3 Port 3 (1st port on module 3) status Type: 100 Mbps Ethernet/802.
Chapter 4: Monitoring • Spanning Tree - the port’s Spanning Tree state, which could be any one of the following states: • Blocking - The port isn’t currently the designated port to a LAN and is not forwarding any packets. (This means another port is providing the route to that LAN and since the Spanning Tree protocol doesn’t allow simultaneous redundant paths, the port is blocked. If the other port’s route to that LAN goes down, this port would then start forwarding packets.
Displaying Switch Module Port Status • Carrier Losses - the number of packet transmissions that detected a loss of carrier (usually a transceiver problem). • Total Collisions - number of collision during packet transmissions. • Excess Collisions - number of packet transmissions that were aborted due to 16 collisions (usually a transceiver problem). • RX FCS/Align Errs - number of times a received packet was discarded due to a bad checksum or Frame Alignment error.
Chapter 4: Monitoring Page 4-4 FE Switch Module User Guide
CHAPTER 5 DIAGNOSTICS AND TROUBLESHOOTING Built-in diagnostic capabilities for the FE Switch Modules include: • Power-up diagnostics, which are run every time the switch module is brought on line • Front panel status LEDs • Local and remote loopback tests • Temperature sensors 5.1 POWER-UP TESTS The power-up diagnostics assure that the ATX and all the installed modules are operating. During diagnostic mode, the status LEDs are used differently than during normal operation.
Chapter 5: Diagnostics and Troubleshooting Table 5-1 Meaning of 3H02-04 LED Indicators LED Meaning LK 100BASE-TX port is connected to another device by a cable; both the cable and port are working correctly RX 100BASE-TX port is receiving data (LED flashes) TX 100BASE-TX port is transmitting data (LED flashes) PROC Switch module processor is ready for operation PWR Switch module hardware is receiving power Table 5-2 Meaning of 3H08-04 LED Indicators LED Meaning LK 100BASE-FX port is conne
Diagnostic results For both types of tests, normal operation is indicated when generated packets are received back (after looping) without errors. For remote loopback tests, the ATX creates LLC Type 1 test packets for LANs and PPP echo-request packets for WANs and UARTs. To start both types of loopback tests, use the NMS. When you use the NMS for these tests, the results are reported back to the NMS. 5.
Chapter 5: Diagnostics and Troubleshooting 5.5.2 Connectivity Problems If the FE Switch Modules power up normally, but the workstations are unable to communicate: 1. Check the LED for abnormalities which may help indicate the source of the problem. (LED behavior during normal operation is explained earlier in this chapter.) 2. Check the status of the ports using Local Console Manager 3. Check for loose connections between the switch module and devices. 4.
CHAPTER 6 ADDING/SWAPPING MODULES Once you have received your ATX, you may want to add a new module to expand your network bandwidth, replace a module with a module of a different type, or swap a module with another module of the same type. If you are: • Adding a switch module to a previously vacant slot or to a slot that had a different type of module, see Adding a Switch Module, below, for instructions.
Chapter 6: Adding/Swapping Modules 1. Make sure the ATX is powered off. 2. Remove the network connections from the module you are going to replace. 3. Loosen the screws at each end of the front panel of the interface module you are going to replace. 4. Remove the installed interface module by pulling gently, but firmly, on the ears at the ends of the module’s front panel. 5. Gently slide the switch module into the plastic guides in the module slot until it is completely inserted.
Swapping a Switch Module 6. Gently slide the new switch module into the plastic guides in the module slot until it is completely inserted. Push the module firmly into place, as far as it will go, to fully engage the connectors at the back of the module with the backplane at the rear of the ATX chassis. 7. Tighten the screws on each side of the switch module’s front panel. 8.
Chapter 6: Adding/Swapping Modules Page 6-4 FE Switch Module User Guide
APPENDIX A TECHNICAL SPECIFICATIONS Standards Compliance • Ethernet Version 2 • IEEE 802.3, 802.3u, 802.2, 802.1(d), 100BASE-TX, 100BASE-FX Protocol Translations • TCP/IP • IPX • AppleTalk Phase II Dimensions Length 12.2 in. (30.99 cm) Width 9.5 in. (24.13 cm) Weight approximately 1.375 lb. (.
Appendix A: Technical Specifications Connectors 3H02-04 RJ45 for UTP 3H08-04 ST for Fiber Optics LEDs • Power • Processor (Processor status/ready) • Link • Collision • Receive • Transmit Bridging Domain • Transparent • Source Routing • Source Routing Transparent Certifications Safety UL 1950, CSA C22.2 No.
APPENDIX B CABLES B.1 TYPES/CONNECTORS Depending on the type of switch module you are using, you’ll need to use specific cables, as described in the IEEE 802.3u specification, shown in the table below. Table B-1 Cable Types and Connectors Cable Type Male Connector Twisted-Pair (UTP) 100 Ohm UTP, 22 - 26 AWG 0.4 - 0.6 mm, 2 pairs 8-pin RJ45 Duplex Fiber 62.5/125 Micron Core ST B.2 CABLE SPECIFICATIONS Table B-2 Twisted-Pair Cable Specifications Type Type 5 balanced UTP Number of Pairs 2 Max.
Appendix B: Cables You can also choose to use 50/125, 80/125, or 100/140 micron core multimedia fiber; however, data in the table above applies only to the 62.5/125 type. NOTE B.3 FAST ETHERNET PIN ASSIGNMENTS B.3.1 About RJ45 Connectors If you’re connecting a 3H02-04 to another device, it’s required that you use only RJ45 connectors on the cabling. An Ethernet twisted-pair link segment requires two pairs of wires. Each wire pair is identified by solid and striped colored wires.
Fast Ethernet Pin Assignments Table B-4 RJ45 Crossover Pin Assignments RJ45 Pin Assignment* 1 Tx+ 2 Tx– 3 Rx+ 6 Rx– *The “+” and “–” signs are used to represent the polarity of the two wires that make up each wire pair. B.3.2 Crossover Wiring for the 3H02-04 Two Ethernet 100BASE-TX devices can communicate only if the transmitter on one device is connected to the receiver on the other device. This reversal, or crossover function, can be implemented either in the wiring or in the device itself.
Appendix B: Cables B.3.3 Straight-Through Wiring for the 3H02-04 If the twisted-pair link segment is to join two ports and only one of the ports has an internal crossover, the two pairs of wires must be straight-through, as shown below. Table B-6 B.3.
INDEX A L adding modules 6-1 attributes, configurable LEDs diagnostics 5-2 power-up sequence types 1-4, 1-5 limitations B-4 3-1 B bridging domains A-2 2-1 C P cabling.
Index Index-2 FE Switch Module User Guide
