HP AdvanceStack 100Base-T Hub-8TXE Installation and operating manual

HP AdvanceStack 100Base-T Hub-8TXE
Installation and Reference Guide

© Copyright 1996 Hewlett-Packard Company
All Rights Reserved
Reproduction, adaptation, or translation without prior written permission is prohibited,
except as allowed under the copyright laws.
Publication Number
J3235-90001
Edition 1
November 1996
Applicable Product
HP J3235A AdvanceStack 100Base-T Hub-8TXE
Disclaimer
The information contained in this document is subject to change without notice.
HEWLETT-PACKARD COMPANY MAKES NO WARRANTY OF ANY KIND
WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. Hewlett-Packard shall not be liable for errors contained
herein or for incidental or consequential damages in connection with the furnishing,
performance, or use of this material.
Hewlett-Packard assumes no responsibility for the use or reliability of its software on
equipment that is not furnished by Hewlett-Packard.
Warranty
See the warranty booklet included with the product.
A copy of the specific warranty terms applicable to your Hewlett-Packard product and
replacement parts can be obtained from your HP sales and service office or HP
authorized reseller.
Hewlett-Packard Company
8000 Foothills Boulevard, m/s 5551
Roseville, California 95747-5551
http://www.hp.com/go/network_city

Package Contents i
Package Contents
Carefully unpack the contents of the package and verify them against the
checklist given below.
Package Checklist
æHP AdvanceStack 100Base-T Hub-8TXE (Part No. HP J3235A)
æPower cord, one of the following:
Australia/New Zealand (8120-6810)
Denmark (8120-6814)
Europe (8120-6811)
Japan (8120-6798)
Switzerland (8120-6815)
United States/Canada (8120-6812)
United Kingdom (8120-6809)
æFour rubber foot pads
æInstallation and Reference Guide (J2325-90001)
æWarranty booklet
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.

Quick Installation iii
Quick Installation
The HP J3235A AdvanceStack 100Base-T Hub-8TXE contains 8 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 HP Hub-8TXE.
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).
4. Connect any devices that use a standard network interface to the RJ-45
(MDI-X) ports (e.g., a workstation, server, bridge or router). Use 100W
Category 5 STP or 100WCategory 5 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.
5. To cascade to another hub or switch, run straight-through twisted-pair cable
from the (8MDI) cascade port on this switch to any (MDI-X) port on the
other device (or vice versa). Refer to Figure 3.2.
If necessary, you can also cascade between two ports using crossover cable.
However, be sure not to exceed the maximum length between end nodes as
described in Chapter 2.

HP Hub-8TXE Installation and Reference Guide
iv Quick Installation
6. This hub can serve as a stand-alone repeater for small networks, can be
cascaded with compatible devices (e.g., Fast Ethernet hub or switch), or can
be connected to a network interconnection device (e.g., Fast Ethernet bridge
or router).
7. 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 HP Hub-8TXE, 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 the HP Hub-8TXE. 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 an HP Hub-8TXE 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
vii
Chapter 1: Product Overview.................................................1-1
Introduction to Fast Ethernet.....................................................................................1-1
HP Hub-8TXE...........................................................................................................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 Port ............................................................2-2
Making a Connection via the MDI Cascade Port .................................................2-3
Distance Limit for Fast Ethernet Cabling.............................................................2-3
Providing Power to the Hub......................................................................................2-4
Verifying Port Status.................................................................................................2-4
Verifying System Operation......................................................................................2-5
Chapter 3: Configuring the Network......................................3-1
Stand-Alone...............................................................................................................3-1
Connecting Multiple Hubs ........................................................................................3-2
Chapter 4: Hardware Reference.............................................4-1
Front Panel ...............................................................................................................4-1
Power..............................................................................................................4-2
Statistical Display for System Performance....................................................4-3
Port Status Display...............................................................................................4-4
RJ-45 Fast Ethernet Ports.....................................................................................4-5
Rear Panel ...............................................................................................................4-6
Power Socket........................................................................................................4-6

HP Hub-8TXE Installation and Reference 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: Safety and Regulatory Statements..................D-1
Power Precautions......................................................................................................D-1
Safety Information......................................................................................................D-2
Informations concernant la sécurité............................................................................D-3
Hinweise zur Sicherheit..............................................................................................D-4
Considerazioni sulla sicurezza ...................................................................................D-5
Consideraciones sobre seguridad ...............................................................................D-6
Safety Information (Japanese)....................................................................................D-7
Regulatory Statements................................................................................................D-8
Appendix E: Product Support Services ................................E-1
Glossary
Index

HP Hub-8TXE Installation and Reference Guide
Contents ix
List of Figures
Figure 3.1 Stand-Alone Configuration....................................................................3-1
Figure 3.2 Multiple Hub Configuration Using the Cascade Port.............................3-2
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

Product Overview 1-1
Chapter 1: Product Overview
Introduction to Fast Ethernet
Standard 10 Mbits/s Ethernet has served well for past generations of 286 and
386 machines performing simple file transfers. However, with the inevitable
growth in corporate network size and the introduction of fully-functional 32-bit
PC architectures, and operating systems running complex applications, 10 Mbits/s
Ethernet has become a serious bottleneck.
With the recent flood of choices for upgrading media bandwidth, 100 Mbits/s
Fast Ethernet has become the most popular because of its low cost, compatibility
with existing Ethernet applications, and the fact that it can run on top of an
installed base of twisted-pair cabling. Fast Ethernet can be easily integrated
into an existing 10 Mbits/s Ethernet environment with no need for protocol
translation or changes to network software.
HP Hub-8TXE
The HP J323SA AdvanceStack 100Base-TX Hub-8TXE includes 8 Fast
Ethernet ports. It provides a friendly design that simplifies installation and
network troubleshooting. The indicator panel includes Utilization and
Collision rate LEDs, as well as Partition, Link and Traffic LEDs to ease
network management.
The HP Hub-8TXE can be used to relieve common network congestion,
regardless of whether it is caused by too many stations contending for limited
bandwidth or by a server that is supporting too many users. It can significantly
improve access both to key servers and to the network backbone. This hub not
only delivers a vast improvement in network response time, but helps you
maintain outstanding performance as your user community continues to grow.