Compaq Netelligent 1224 User Manual
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Compaq Netelligent 1224 User Manual

Compaq Netelligent 1224 User Manual

10base-t/100base-tx repeater
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Netelligent 1224
10Base-T/100Base-TX Repeater
User Guide

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Summary of Contents for Compaq Netelligent 1224

  • Page 1 Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...

  • Page 2: User Guide

    1996 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A. Compaq Registered United States Patent and Trademark Office. Netelligent is a trademark of Compaq Computer Corporation. Compaq Netelligent 1224 10Base-T/100Base-TX Repeater User Guide Second Edition (April 1996) Part Number 185812-002...

  • Page 3: Federal Communications Commission Notice

    ......Federal Communications Commission Notice 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.

  • Page 4: European Union Notice

    This equipment complies with EMC directive 89/336/EEC (ITE), which includes EN 50082-1: IEC 801-2 (Electrostatic Discharge) IEC 801-3 (Radiated Immunity) IEC 801-4 (Electrical Fast Transient/Burst) EN55101-4 (Conducted Immunity) (not currently required) European Union Notice Safety Immunity Netelligent 1224 10Base-T/100Base-T Repeater User Guide...

  • Page 5: Table Of Contents

    Display Mode Button ...1-8 Automatic Speed Detection...1-9 Chapter 2 Planning Repeater Installation Installation Requirements...2-1 Environmental Requirements ...2-1 Electrical Requirements ...2-1 Spatial Requirements ...2-2 Twisted-Pair (UTP) Wire Requirements...2-2 Installing New Wire ...2-3 System Planning Charts ...2-5 Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...
  • Page 6 viii Chapter 3 Installing the Repeater Mounting the Repeater...3-1 Attaching Rubber Feet ...3-1 Rack-Mounting the Repeater...3-1 Connecting Twisted-Pair Cable...3-3 Setting the Uplink Switches ...3-3 Interconnecting Repeaters...3-5 Connecting Power...3-6 Disconnecting Power...3-7 Replacing the Power Supply...3-7 Installing a Redundant Power Supply...3-8 Chapter 4 LED Status Chart Selecting an LED Display Mode ...4-1 Appendix A...

  • Page 7: Preface

    Preface This guide includes information about how to install and operate the Compaq Netelligent 1224 10Base-T/100-Base-TX Repeater. We recommend that you read all chapters in this guide to become familiar with all of the repeater's features and to ensure a successful installation.

  • Page 8: Overview

    Chapter 1 Overview The Compaq Netelligent 1224 10Base-T/100Base-TX Repeater provides a new standard in flexibility for networks that employ both 10 Mb/s and 100 Mb/s functionality. Each of the 24 RJ-45 ports on the repeater accepts either a 10Base-T or 100Base-TX connection. The repeater's speed detection circuitry automatically detects the connection's wire speed and routes transmissions to the proper repeater core inside the repeater.

  • Page 9: Package Contents

    Before you start to install the repeater, verify that this package contains the following items: 1224 10Base-T/100Base-TX Repeater AC power cord Rack-mounting kit (two mounting brackets, eight 3/8-inch bracket screws, and four 1/2-inch rack-mount screws) Four adhesive-backed rubber feet Compaq Netelligent 1224 10Base-T/100Base-TX Repeater User Guide Warranty card...
  • Page 10 Dual-Speed Repeater User Guide User Guide Figure 1-1. Package Contents MDI-X 100 MBPS 10 MBPS MDI-X ALTERNATING DISPLAY MODE MDI-X Rack-Mounting Brackets 1/2-inch Rack Mount Screws (4) 3/8-inch Bracket Screws (8) Limited Warranty Limited Warranty Netelligent 1224 10Base-T/100Base-T Repeater User Guide...

  • Page 11: Operational Overview

    Introduction Operational Overview This section provides an overview of the repeater's components, which include the LED indicators, RJ-45 ports, and uplink ports, and discusses the basic functionality of the repeater. Figures 1-2 and 1-3 show the repeater's front and back panels. Power Supply, 10Base-T, 100Base-T Collision Status Indicators...

  • Page 12: Led Indicators

    The 10 ONLY-10/100 switch lets you set Port 1 for either 10 Mb/s or 10/100 Mb/s (automatic speed detection). MDI-X 10 ONLY 10/100 MDI-X MDI-X Netelligent 1224 10Base-T/100Base-T Repeater User Guide RJ-45 Link/Partition/Activity LED Indicators 100 MBPS 10 MBPS MDI-X...
  • Page 13 Introduction Figure 1-5. 10 ONLY/Dual Speed (10/100) Switch The settings have the following meaning: 10/100 setting (default) incoming wire speed like the other ports The 10 ONLY setting is useful if you have a server that contains a dual-speed (10 Mb/s/100 Mb/s) Network Interface Card (NIC) that must communicate with a 10 Mb/s segment.

  • Page 14: Rj-45 Ports

    Therefore, you cannot uplink to two 100 Mb/s repeaters. However, you can use both uplink ports for 10 Mb/s uplink connections. MDI-X 10 ONLY 10/100 MDI-X MDI-X Netelligent 1224 10Base-T/100Base-T Repeater User Guide 100 MBPS 10 MBPS MDI-X ALTERNATING DISPLAY MODE...

  • Page 15: Display Mode Button

    Introduction Figure 1-7. Uplink Switches Display Mode Button The DISPLAY MODE button lets you set the repeater to display port activity in any of three LED display modes: 100 Mb/s, 10 Mb/s, or alternating between 100 Mb/s and 10 Mb/s. To select a specific display mode, press and release the DISPLAY MODE button on the right side of the repeater.

  • Page 16: Automatic Speed Detection

    If you change the NIC wire speed from 10 Mb/s to 100 Mb/s, you must momentarily disconnect the link for the automatic speed detection function to work correctly. During automatic speed detection, 10 Mb/s data on the detecting port will be invalid (error packets). Netelligent 1224 10Base-T/100Base-T Repeater User Guide...

  • Page 17: Planning Repeater Installation

    (for proper ventilation) Electrical Requirements The electrical requirements for a repeater are as follows: 100 to 240 VAC 1.5 to 0.75 Amps (1.5 @ 100 VAC to 0.75 @ 240 VAC) 50 to 60 Hz Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...

  • Page 18: Spatial Requirements

    Planning Repeater Installation CAUTION: grounded outlet. Do not use a three-to-two pronged adapter at the outlet. Doing so may result in electrical shock and/or damage to the repeater and will void your warranty. NOTE: If the supplied power cord is lost or damaged, replace it with a power cord of the same type, equal current rating, and required regulatory approvals to ensure emissions compliance.

  • Page 19: Installing New Wire

    Pin 1 at the server, Pin 2 at the repeater connects to Pin 2 at the server, and so on. Figure 2-1 shows the locations of pins on a standard RJ-45 plug on a twisted-pair cable. Pins Figure 2-1. RJ-45 Plug Pin Locations Twisted-Pair Cable RJ-45 Plug Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...
  • Page 20 Planning Repeater Installation Tables 2-1 and 2-2 show the wiring in a straight-through and crossover twisted-pair cable. (Pins 4, 5, 7, and 8 are not used, but must be terminated [connected to wires] for 100 Mb/s operation.) Twisted Pair Number Twisted Pair Number Table 2-1 Straight-Through Twisted-Pair Wiring...

  • Page 21: System Planning Charts

    MDI-X (default) MDI (uplinkable) Port 12 Uplink Switch Setting MDI-X (default) MDI (uplinkable) Port 1 Speed Selection Switch Setting 10 ONLY 10/100 (default) Figure 2-2. Repeater Setup and Cabling Chart Date Port Connects To Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...

  • Page 22: Rack Inventory Chart

    ......Planning Repeater Installation Rack Inventory Chart Use this chart to record the components installed in a particular rack. Date Wiring Closet Number Rack Number...

  • Page 23: Installing The Repeater

    The repeater occupies two slots in a standard, 19-inch rack. To mount the repeater in a rack, use the supplied installation kit. This kit includes two side mounting brackets, eight bracket screws, and four larger rack-mount screws. To attach the brackets, follow these steps: Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...
  • Page 24 Installing the Repeater 1. Remove the two screws from the left and right side of the repeater. (These screws are extras and are not needed to install the mounting brackets.) 2. Position the bracket as shown in Figure 3-1 and secure it with the smaller bracket screws.

  • Page 25: Connecting Twisted-Pair Cable

    8-wire UTP cable. OUT ports let you interconnect the repeater and another repeater without the need for special crossover cables and allows the two repeaters to be on the same segment. MDI-X MDI-X 100Base-TX Workstation Netelligent 1224 10Base-T/100Base-TX Repeater User Guide MDI MDI-X...
  • Page 26 ......Installing the Repeater The default setting for the uplink switches is MDI-X (Media Dependent Interface-Reversed, that is, standard IN repeater port).

  • Page 27: Interconnecting Repeaters

    (5 meters) while still allowing a maximum distance of 328 feet (100 meters) for repeater to workstation/server connections. At 10 Mb/s, the distance between two repeaters can be up to 328 feet (100 meters). Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...

  • Page 28: Connecting Power

    Installing the Repeater Figure 3-6. Interconnecting Repeaters Connecting Power Follow these steps to connect the repeater to power: 1. Plug the power cord into the power connector on the back of the repeater. 2. Insert the three-pronged plug on the power cord into a non-switched, grounded power outlet on a wall, a power strip, or a grounded extension cord.

  • Page 29: Disconnecting Power

    Replacing the Power Supply The power supply's modular design makes the supply easy to replace. If power supply replacement is necessary, follow the instructions under “Installing a Redundant Power Supply Module” in the next section. PWR A Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...

  • Page 30: Installing A Redundant Power Supply

    Installing the Repeater Installing a Redundant Power Supply Module The repeater comes with a pre-installed, 90-watt power supply module (PWR A). You can install an optional redundant power supply module (PWR B) for backup power. Contact your authorized Compaq reseller for information about ordering an additional power supply module.
  • Page 31 NOTE: If the power supply module does not have power or is not functioning correctly, the PWR B LED indicator lights yellow. Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...

  • Page 32: Led Status Chart

    The RJ-45 port LEDs are displaying the status of 100BASE-TX connections. The RJ-45 port LEDs alternate between displaying 10BASE-T and 100BASE- TX status. The 10Mb/s and 100Mb/s LEDs alternate to show which status is being displayed. Netelligent 1224 10Base-T/100Base-T Repeater User Guide...

  • Page 33: Selecting An Led Display Mode

    LED Operation Selecting an LED Display Mode The repeater has a display mode selection button on the front panel that lets you select a specific LED display mode for the repeater. 100 COL Figure 4-1. LED Display Mode Selection Button To view a specific LED display mode, press and release the display mode selection button until the LED for the desired mode lights.

  • Page 34: Appendix A Specifications Electrical Specifications

    Pushbutton switch for three modes of LED display: 10 Mb/s only 100 Mb/s only Alternating (alternating between 10 Mb/s and 100 Mb/s display modes) Automatic speed detection or dedicated 10Base-T port Automatic speed detection port with MDI/MDI-X Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...

  • Page 35: Physical Specifications

    Specifications Power Requirements Voltage: 100 to 240 VAC Power: 1.5 to 0.75 amps (1.5A @ 100 VAC to 0.75A @ 240 VAC) Frequency: 50 to 60 Hz Power Consumption Maximum: 60 W Power cord (USA) 1.8 mm (6 feet), 10 Amps Power Supply 90 W redundant power supply +5 VDC at 14 A;...

  • Page 36: Storage Environment

    0 to 10,000 feet (0 to 3 km) Storage Environment 32 to 151 F (0 to 66 C) 15% to 95% humidity at 50 C (non-condensing) 0 to 30,000 feet altitude (0 to 9 kilometers) Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...

  • Page 37: Glossary

    Category 4 Balanced Cable Balanced 100 ohms aand 120 ohms cables and associated connected hardware whose transmission characteristics are specified up to 20 MHz as per ISO/IEC 11801 and clause 23 of the IEEE 802.3 standard. Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...
  • Page 38 Glossary Category 5 Balanced Cable Balanced 100 ohms aand 120 ohms cables and associated connected hardware whose transmission characteristics are specified up to 100 MHz as per ISO/IEC 11801 and clause 23 of the IEEE 802.3 standard. Class I Repeater A type of 100Base-T repeater with internal delay such that only one repeater set may exist between any two DTEs within a single collision domain.
  • Page 39 Impedance A measurement of the resistance to the flow of alternating current in an electrical circuit. Inter-Repeater Link (IRL) A mechanism for connecting two and only two repeater sets. Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...
  • Page 40 Glossary Inter-Packet Gap (IPG) A delay or time gap between CSMA/CD packets intended to provide interface recovery time for other CSMA/CD sublayers and for the Physical Medium. For 10Base-T, the IPG is 9.6 us (96 bit times). For 100Base-T, the IPG is 0.96 us (96 bit times). Jabbering Continuous transmission from a node, generally as a result of a hardware or firmware failure.
  • Page 41 An external connector used to connect PCs and other node devices to the network. Repeater Set A repeater unit plus its associated physical layer interfaces (MAUs or PHYs). RJ-45 An 8-wire modular connector used for 10Base-T Ethernet, 100Base-T Ethernet, and some telephones. Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...
  • Page 42 Glossary Segment A single collision domain. Each Ethernet segment supports either a 10 Mb/s or 100 Mb/s band . A multiple segment implementation increases the band of a Local Area Network. Stack A stack is a group of interconnected repeaters. Twisted Pair Wire Two insulated copper wires twisted together.
  • Page 43 Media Dependent Interface-Reversed See MDI-X NIC 1-6 OUT ports 1-7, 3-3 Overview 1-4 Package contents 1-2 Power connecting 3-6 disconnecting 3-7 Power cord 1-2 Power outlet 2-2 Power supply 1-1 redundant 3-8 replacing 3-7 Netelligent 1224 10Base-T/100Base-TX Repeater User Guide...
  • Page 44 I-2 Index Redundant power supply 3-8 Repeater attaching rubber feet 3-1 features 1-1 interconnecting 3-5 mounting 3-1 rack mounting 3-1 steps for mounting 3-2 Repeaters interconnecting 2-2 RJ-45 ports 1-7, 3-3 Status LEDs 1-5 Twisted-pair cable 3-3 Uplink default setting 3-4 Uplink switch setting 3-3 Uplink switches 1-7...

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