CheetaHub™ Power-3012A
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Copyright © 1997 by Accton Technology Corporation. All rights reserved.
No part of this document may be copied or reproduced in any form or by any means without the
prior written consent of Accton Technology Corporation.
Accton makes no warranties with respect to this documentation and disclaims any implied
warranties of merchantability, quality, or fitness for any particular purpose. The information in this
document is subject to change without notice. Accton reserves the right to make revisions to this
publication without obligation to notify any person or entity of any such changes.
Before operating this product, please review the statements on electromagnetic emission
interference and safety compliance in Appendix D.
International Headquarters
No. 1 Creation Road III,
USA Headquarters
1962 Zanker Road
Science-based Industrial Park
Hsinchu 300, Taiwan, R.O.C.
Phone: 886-3-5770-270
FAX: 886-3-5770-267
BBS: 886-3-5770-654
San Jose, CA 95112
Phone: 408-452-8900
FAX: 408-452-8988
BBS: 408-452-8828
FAST FAX: 408-452-8811
Internet: [email protected]
Accton, CheetaHub and SmartWatch are trademarks or registered trademarks of Accton
Technology Corporation. Other trademarks or brand names mentioned herein are trademarks or
registered trademarks of their respective companies.
EH3012A
150188-101
E0897-R01
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Package Contents
Carefully unpack the contents of the package and verify them against the
checklist given below.
Package Checklist
æ CheetaHub Power-3012A (Model No. EH3012A)
Fast Ethernet stackable hub with 12 100BASE-TX ports
and optional Fast Ethernet switch modules
æ Two mounting brackets
æ Four rubber foot pads
æ AC power cord
æ One 20 cm FlexBus stack cable
æ Installation manual
æ Warranty registration card
Please inform your dealer immediately should there be any wrong, missing, or
damaged parts.
If possible, retain the carton, including the original packing materials. Use
them again to repack the unit in case there is a need to return it for repair.
To qualify for product updates and product warranty registration, fill in the
Owner Registration Card and return it to Accton Technology Corporation.
Package Contents
i
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Quick Installation
The CheetaHub Power-3012A is a Class I Fast Ethernet repeater. It contains 12
100BASE-TX Fast Ethernet ports. This hub also includes two stack ports on
the rear panel, allowing you to stack up to 5 hubs, and one slot for optional
switch modules which support an additional Fast Ethernet connection
(100BASE-TX or 100BASE-FX). The smart design built into the front display
panel provides a friendly interface that simplifies installation and network
troubleshooting. If you are already familiar with basic network operations, you
should be able to install this hub as described below:
1. Unpack the CheetaHub.
2. Find a location close to the network devices you need to connect, and within
easy reach of an electrical outlet.
3. Mount the hub on a desktop or any other flat surface. If you are installing
multiple hubs, you can stack them on top of each other (after attaching the
foot pads), or install them in a standard EIA 19-inch rack.
4. Connect any devices that use a standard network interface to the RJ-45
MDI-X station ports; e.g., a workstation, server or router. Use 100W
Category 5 STP or UTP cable to connect to the hub, and be sure the length
of any twisted-pair connection does not exceed 100 meters (328 feet). Refer
to Chapter 3 for sample configurations.
5. If you are stacking multiple hubs, connect the FlexBus stack cable between
the “Out” and “In” backplane ports on adjacent hubs. Run a simple chain
starting at the Out port on the top hub in the stack, and ending at the In port
on the bottom hub in the stack. No more than 5 hubs can be connected via
the backplane bus.
Quick Installation
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CheetaHub Power-3012A User’s Guide
6. To connect a Fast Ethernet switch, run straight-through twisted-pair cable
from the MDI daisy-chain port on this hub (Port 12) to any MDI-X station
port on the other device (or vice versa). Refer to Figure 3.3. If necessary,
you can also cascade between two station ports using crossover cable.
7. To uplink to the network via a Fast Ethernet switch port, you can install one
of the optional switch modules. The 100BASE-TX module can be uplinked
to Fast Ethernet networks by attaching it to a switch or another repeater hub.
It can also be used to provide dedicated access for a heavily used file server
or a power user. Or you can use a 100BASE-FX module to connect to a
remote site up to 2 kilometers (1.24 miles) away. (Refer to Chapter 2 for a
more detailed description of length restrictions for fiber optic cable.)
The transmission mode is set by auto-negotiation to full or half duplex for
both the 100BASE-TX and 100BASE-FX modules. The speed is set at 10 or
100 Mbps using auto-sensing for the 100BASE-TX module; while the speed
of the 100BASE-FX modules is fixed at 100 Mbps.
8. Verify network communications by ensuring that:
• you have made all the necessary connections
• you can access any connected resources
• the hub’s indicators are functioning properly
If you encounter any problems in installing the CheetaHub, refer to Chapter 2 for
a detailed description of installation procedures, Chapter 3 for sample
configurations, or Appendix A for help in troubleshooting.
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Quick Installation
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About this Guide
This guide is designed for the experienced network installer. It describes how
to install and operate the CheetaHub Power-3012A. After reading this manual,
you should be able to use the front display panel and configure options to
manage all your network connections.
This manual covers the following topics:
Chapter 1 - Product Overview
Brief description of Fast Ethernet, followed by a description of this hub and a
summary of its important features and specifications.
Chapter 2 - Installing the System
Installing a CheetaHub and making basic network connections.
Chapter 3 - Configuring the Network
Shows sample network configurations for a local area network.
Chapter 4 - Hardware Reference
Detailed description of indicator panel and ports.
Appendices -
Troubleshooting, cable assignments, and product specifications.
About this Guide
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Contents
Chapter 1: Product Overview................................................. 1-1
Introduction to Fast Ethernet......................................................................................1-1
Accton’s CheetaHub Power-3012A ...........................................................................1-1
Basic Features ............................................................................................................1-2
Chapter 2: Installing the System............................................ 2-1
Pre-Installation Requirements ....................................................................................2-1
Hardware Installation .................................................................................................2-2
Stacking Hubs on a Flat Surface............................................................................2-2
Mounting Hubs in a Rack......................................................................................2-3
Connecting the Hub System .......................................................................................2-4
Making a Connection via an MDI-X Station Port .................................................2-4
Connecting to the Stack’s Backplane ....................................................................2-5
Making a Connection via the MDI Daisy-Chain Port............................................2-5
Connecting to a Switch Module.............................................................................2-6
Providing Power to the Hub .......................................................................................2-10
Verifying Port Status..................................................................................................2-11
Verifying System Operation.......................................................................................2-12
Chapter 3: Configuring the Network...................................... 3-1
Stand-Alone ...............................................................................................................3-1
Stack of Hubs .............................................................................................................3-2
Connecting to the Network Backbone........................................................................3-3
Connecting to the Remote Device..............................................................................3-4
Appendix A: Troubleshooting................................................ A-1
Diagnosing Hub Indicators.........................................................................................A-1
System Diagnostics ....................................................................................................A-2
Power and Cooling Problems ................................................................................A-2
Installation.............................................................................................................A-2
Physical Configuration ..........................................................................................A-3
System Integrity.....................................................................................................A-3
Contents
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CheetaHub Power-3012A User’s Guide
Appendix B: Port and Cable Assignments............................. B-1
RJ-45 Port ...............................................................................................................B-1
Appendix C: Specifications.................................................... C-1
Product Specifications...............................................................................................C-1
Appendix D: Regulatory Standards Compliance.................. D-1
EMI Certification ......................................................................................................D-1
FCC Class B Certification ....................................................................................D-1
Voluntary Control Council for Interference (VCCI-B) ........................................D-2
European Community Immunity Requirements....................................................D-3
CE Mark Declaration of Conformance (for EMI and Safety)...............................D-3
Safety Compliance.....................................................................................................D-4
Underwriters Laboratories Inc..............................................................................D-4
Sicherheitshinweise ..............................................................................................D-5
Appendix E: Product Support Services ................................ E-1
Product Registration..................................................................................................E-1
Problem Report .........................................................................................................E-1
Hardware Repair Service...........................................................................................E-1
Bulletin Board Service (BBS)...................................................................................E-2
Interactive Fast Fax (U.S.A. Office)..........................................................................E-2
Technical Support .....................................................................................................E-3
Limited Warranty ......................................................................................................E-4
Customer Remedies..............................................................................................E-4
Return Process......................................................................................................E-5
Accton Offices...........................................................................................................E-6
Ordering Information ................................................................................................E-7
Glossary
Index
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CheetaHub Power-3012A User’s Guide
List of Figures
Figure 2-1 Stacking Hubs on a Flat Surface ............................................................2-2
Figure 2-2 Mounting Hubs in a Rack.......................................................................2-3
Figure 2-3 Connecting the Backplane Bus in a Stack..............................................2-5
Figure 2-4 Fast Ethernet Switch Modules................................................................2-6
Figure 2-5 Switch Indicators....................................................................................2-11
Figure 3-1 Stand-Alone Configuration ....................................................................3-1
Figure 3-2 Stack of Hubs.........................................................................................3-2
Figure 3-3 Linking Stacks with a Collapsed Backbone ...........................................3-3
Figure 3-4 Connecting the Stack to a Remote Device .............................................3-4
Figure B-1 RJ-45 Connector (on the Hub Side).......................................................B-1
List of Tables
Table 2-1 Calculating the Power Budget for Fiber Optics......................................2-9
Table 2-2 Power Budget for Common Gauge Fiber Optics....................................2-9
Table 2-3 Meaning of LED Indicators....................................................................2-11
Table 2-4 Maximum Cable Length.........................................................................2-13
Table B-1 RJ-45 Pin Assignments ..........................................................................B-1
Contents
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