Accton Technology Fast EtherHub-12s Bedienungsanleitung
Fast EtherHub-12s
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Installation Manual
Fast EtherHub-12s
Smart
Fast Ethernet Hub
with 12 100BASE-TX Ports
Copyright (c) 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 electomagnetic emission
interference and safety compliance in Appendix D.
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No. 1 Creation Road III,
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
Internet: [email protected]
86$+HDGTXDUWHUV
1962 Zanker Road
San Jose, CA 95112
Phone: 408-452-8900
FAX: 408-452-8988
BBS: 408-452-8828
FAST FAX: 408-452-8811
Accton, EtherHub 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.
EH3012-TX
150114-101
E0197-R02
Package Contents i
Package Contents
Carefully unpack the contents of the package and verify them against the
checklist given below.
Package Checklist
æFast EtherHub-12s (Model No. EH3012-TX)
æAC power cord (optional)
æFour rubber foot pads
æInstallation manual
æWarranty 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.
Quick Installation iii
Quick Installation
The Fast EtherHub-12s is a Class II repeater. It contains 12 100BASE-TX Fast
Ethernet ports. 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 Fast EtherHub-12s.
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 an 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. Refer to Chapter
3 for sample configurations.
To cascade to another hub or switch, run straight-through twisted-pair cable
from the (12MDI) daisy-chain port on this hub to any (MDI-X) station port
on the other device (or vice versa). Refer to Figure 3.2. If necessary, you
can also cascade between two station ports using crossover cable. However,
be sure not to exceed the maximum length between end nodes. Assuming
that the maximum cable length is used for end-node connections (i.e., 100
meters), then the inter-hub cabling should be limited to 5 meters. However,
if you need to extend this length of inter-hub cabling beyond 5 meters, then
Fast EtherHub-12s User’s Guide
iv Quick Installation
first calculate the maximum length permitted between each pair of end nodes
as described in Chapter 2 under the section on Precise Cable Length Budgeting.
5. 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 Fast EtherHub, refer to Chapter 2
for a detailed description of installation procedures, Chapter 3 for sample
configurations, or Appendix A for help in troubleshooting.
Note: Refer to Chapter 2 for a more detailed description of calculating the maximum cable
length permitted between two end nodes for Fast Ethernet.
About this Guide v
About this Guide
This guide is designed for the experienced network installer. It describes how
to install and operate Accton’s Fast EtherHub-12s. 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 Fast EtherHub 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.
Contents
Contents vii
Chapter 1: Product Overview.................................................1-1
Introduction to Fast Ethernet.....................................................................................1-1
Accton’s Fast EtherHub-12s......................................................................................1-1
Basic Features ...........................................................................................................1-2
Chapter 2: Installing the System............................................2-1
Pre-Installation Requirements ...................................................................................2-1
Connecting the Hub System......................................................................................2-2
Making a Connection via an MDI-X Station Port ................................................2-2
Making a Connection via the MDI Daisy-Chain Port...........................................2-3
Simplified Cable Length Constraints..............................................................2-4
Precise Cable Length Budgeting.....................................................................2-4
Providing Power to the EtherHub..............................................................................2-5
Verifying Port Status.................................................................................................2-6
Verifying System Operation......................................................................................2-6
Chapter 3: Configuring the Network......................................3-1
Stand-Alone...............................................................................................................3-1
Connecting Multiple Hubs ........................................................................................3-1
Using the RJ-45 Daisy-Chain Port........................................................................3-2
Precies Guidelines for Configuring Multiple Hubs ..............................................3-3
Chapter 4: Hardware Reference.............................................4-1
Front Panel ...............................................................................................................4-1
Indicators..............................................................................................................4-1
Fan Alert.........................................................................................................4-2
Power Status ...................................................................................................4-2
Statistical Display for System Performance....................................................4-3
Port Status Display..........................................................................................4-4
RJ-45 Ethernet Ports.............................................................................................4-5
Rear Panel ...............................................................................................................4-6
Power Socket........................................................................................................4-6
Fast EtherHub-12s User’s Guide
viii Contents
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
Hub Integrity ........................................................................................................A-3
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-2).........................................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
Fast EtherHub-12s User’s Guide
Contents ix
Limited Warranty.......................................................................................................E-4
Customer Remedies..............................................................................................E-4
Return Process......................................................................................................E-5
Accton Offices...........................................................................................................E-6
Ordering Information ................................................................................................E-6
Glossary
Index
List of Figures
Figure 3.1 Stand-Alone Configuration....................................................................3-1
Figure 3.2 Multiple Hub Configuration Using the Daisy-Chain Port......................3-2
Figure 3.3 Cabling Limits for Multiple Hub Configuration.....................................3-4
Figure 4.1 Front Panel.............................................................................................4-1
Figure 4.2 Indicators ...............................................................................................4-2
Figure 4.3 Rear Panel..............................................................................................4-6
Figure B-1 RJ-45 Connector (on the Hub Side).......................................................B-1
List of Tables
Table B-1 RJ-45 Pin Assignments............................................................................B-1
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