TRENDnet TE100-DS24 User manual

TE100-DM/DS Series
Dual-Speed Hub
User’s Guide
Rev. 01 (May, 1998)
6012-0165001
Printed In Taiwan
RECYCLABLE

ii
Wichtige Sicherheitshinweise
1. Bitte lesen Sie sich diese Hinweise sorgf?tig durch.
2. Heben Sie diese Anleitung f?den sp?ern Gebrauch auf.
3. Vor jedem Reinigen ist das Ger?vom Stromnetz zu trennen. Vervenden Sie keine Fl?sig-
oder Aerosolreiniger. Am besten dient ein angefeuchtetes Tuch zur Reinigung.
4. Um eine Besch?igung des Ger?es zu vermeiden sollten Sie nur Zubeh?teile verwenden,
die vom Hersteller zugelassen sind.
5. Das Ger?is vor Feuchtigkeit zu sch?zen.
6. Bei der Aufstellung des Ger?es ist auf sichern Stand zu achten. Ein Kippen oder Fallen k?
nte Verletzungen hervorrufen. Verwenden Sie nur sichere Standorte und beachten Sie die
Aufstellhinweise des Herstellers.
7. Die Bel?tungs?fnungen dienen zur Luftzirkulation die das Ger?vor ?erhitzung sch?zt.
Sorgen Sie daf?, daß diese ?fnungen nicht abgedeckt werden.
8. Beachten Sie beim Anschluß an das Stromnetz die Anschlu?erte.
9. Die Netzanschlu?teckdose muß aus Gr?den der elektrischen Sicherheit einen
Schutzleiterkontakt haben.
10. Verlegen Sie die Netzanschlu?eitung so, daß niemand dar?er fallen kann. Es sollete auch
nichts auf der Leitung abgestellt werden.
11. Alle Hinweise und Warnungen die sich am Ger?en befinden sind zu beachten.
12. Wird das Ger??er einen l?geren Zeitraum nicht benutzt, sollten Sie es vom Stromnetz
trennen. Somit wird im Falle einer ?erspannung eine Besch?igung vermieden.
13. Durch die L?tungs?fnungen d?fen niemals Gegenst?de oder Fl?sigkeiten in das Ger?
gelangen. Dies k?nte einen Brand bzw. Elektrischen Schlag ausl?en.
14. ?fnen Sie niemals das Ger?. Das Ger?darf aus Gr?den der elektrischen Sicherheit nur
von authorisiertem Servicepersonal ge?fnet werden.
15. Wenn folgende Situationen auftreten ist das Ger?vom Stromnetz zu trennen und von einer
qualifizierten Servicestelle zu ?erpr?en:
a– Netzkabel oder Netzstecker sint besch?igt.
b– Fl?sigkeit ist in das Ger?eingedrungen.
c–Das Ger?war Feuchtigkeit ausgesetzt.
d–Wenn das Ger?nicht der Bedienungsanleitung ensprechend funktioniert oder Sie mit
Hilfe dieser Anleitung keine Verbesserung erzielen.
e–Das Ger?ist gefallen und/oder das Geh?se ist besch?igt.
f–Wenn das Ger?deutliche Anzeichen eines Defektes aufweist.

iii
16. Bei Reparaturen d?fen nur Orginalersatzteile bzw. den Orginalteilen entsprechende Teile
verwendet werden. Der Einsatz von ungeeigneten Ersatzteilen kann eine weitere Besch?
igung hervorrufen.
17. Wenden Sie sich mit allen Fragen die Service und Repartur betreffen an Ihren
Servicepartner. Somit stellen Sie die Betriebssicherheit des Ger?es sicher.

iv
Trademarks
Contents subject to change without prior notice.
All trademarks belong to their respective proprietors.
Copyright Statement
No part of this publication may be reproduced in any form or by any
means or used to make any derivative such as translation, transfor-
mation, or adaptation without permission from the manufacturer, as
stipulated by the United States Copyright Act of 1976.
FCC Warning
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.
These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commer-
cial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance
with this user’s guide, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
CE Mark Warning
This is a Class A product. In a domestic environment, this product
may cause radio interference in which case the user may be required
to take adequate measures.
VCCI A Warning

v

About This Guide vi
TABLE OF CONTENTS
ABOUT THIS GUIDE.................................................................xi
Models Covered........................................................................xi
Conventions.............................................................................xi
Overview of the User's Guide ..................................................xii
CHAPTER 1 : INTRODUCTION.....................................................1
Product Description..................................................................1
Product Features......................................................................2
Dual-Speed Ethernet Hub..........................................................4
Technology Overview ................................................................4
100BASE-TX Technology Overview............................................5
100Mbps Fast Ethernet Introduction.........................................................5
Cables and Connectors...................................................................................6
Topology.............................................................................................................6
Network Diameter...........................................................................................7
Hub Types.........................................................................................................7
CHAPTER 2 : UNPACKING AND SETUP......................................9
Unpacking ................................................................................9
Identifying External Components ............................................10
Front Panel.....................................................................................................10
Rear Panel.......................................................................................................12
Installing the Hub...................................................................13

vii
Installation.....................................................................................................13
Rack Mounting...............................................................................................14
Replacing the Power Supply ....................................................15
CHAPTER 3 : UNDERSTANDING INDICATORS ..........................17
Hub State Indicators...............................................................18
Module Indicators (SLOT1 & 2) ..............................................19
Port State Indicators ..............................................................20
SNMP Indicator .....................................................................21
Port Speed Indicators .............................................................21
Console Port Indicator (CON)..................................................22
CHAPTER 4 : MAKING CONNECTIONS.....................................23
Hub Cascading/Building a Stack ............................................23
Connectivity Rules..................................................................25
The Diagnostic Port................................................................26
Diagnostic Port Connection.........................................................................26
Hub to End-Station Connection...............................................27
Hub-to-Hub Uplink .................................................................29
Optional Module Connections..................................................31
Module Installation......................................................................................31
Switch Module................................................................................................32
Fiber Optic Module.......................................................................................33
Fast Ethernet Module..................................................................................34
CHAPTER 5 : MASTER HUB SETUP AND MANAGEMENT.........37
Navigation and Conventions ...................................................38
In-Band Setup Instructions.....................................................39

Dual-Speed Stackable Hubs User’s Guide
viii
Backup Master Function .........................................................40
Segmenting Hubs....................................................................41
Logging in to the Hub Console ................................................43
Logging In ........................................................................................................43
Changing Your Password.............................................................................45
Setting Up the Master Hub .....................................................47
TCP/IP Settings .............................................................................................47
Out-of-Band Management and Console Settings ..................................49
Software Update on Boot.............................................................................50
SNMP Information........................................................................................52
SNMP Traps...................................................................................................53
SNMP Security (Community Names)......................................................55
Adding and Deleting Users .........................................................................56
Primary/Backup Master..............................................................................58
Hub Stack Management..........................................................59
Controlling Hubs in the Hub Stack...........................................................59
Controlling Individual Ports.......................................................................62
Monitoring the Hub Stack.......................................................64
Displaying Port and Group Statistics.......................................................64
Displaying Segment Statistics...................................................................68
Node Tracking................................................................................................70
Per-Port Intrusion Security.........................................................................71
Bridge Information........................................................................................71
Resetting the Hub...................................................................72
System Reset..................................................................................................73
Factory Reset..................................................................................................74
APPENDIX A : CABLES AND CONNECTORS ............................75
100BASE-TX Ethernet Cable and Connectors...........................75
Crossover Cables.....................................................................76
Diagnostic Port Specifications.................................................77
RS-232 (DB9) Pin Specification.................................................................77

ix
APPENDIX B : BOOT CONFIGURATION FILE...........................79
APPENDIX C : SPECIFICATIONS ..............................................83
General...................................................................................83
Hub-to-Hub Cascading............................................................84
LED Indicators.......................................................................84
Environmental and Physical ...................................................84
APPENDIX D : GLOSSARY .......................................................87
INDEX.........................................................................................96

About This Guide xi
0 ABOUT THIS GUIDE
This guide discusses how to install and use the TE100-DM/DS series
dual-speed, managed/unmanaged, stackable Ethernet/ Fast Ethernet
Hubs.
Models Covered
Unmanaged Models: TE100-DS16, TE100-DS16X, TE100-DS24,
TE100-DS24X.
Managed Models: TE100-DM16, TE100-DM16X, TE100-DM24,
TE100-DM24X.
All “X” models include a switch module in Slot 1 of the rear panel.
All “M” models are intelligent (that is, “managed”) hubs capable of
managing an entire hub stack.
The model numbers also indicate how many ports a particular hub
has, thus: DM16/DS16 hubs have 16 ports and DM24/ DS24 hubs
have 24 ports.
Conventions
References in this manual to the TE100-DS16, TE100-DS16X,
TE100-DS24, TE100-DS24X; TE100-DM16, TE100-DM16X, TE100-
DM24, and TE100-DM24X hubs are frequently written simply as
“hub” or “hubs” where the text applies to all models. Model numbers

Dual-Speed Stackable Hubs User’s Guide
About This Guide
xii
are normally used only to differentiate between them where neces-
sary.
At points in this document, master models are differentiated by re-
ferring to, “TE100-DM/DS series master hubs.”
Unless differentiated by model number or other specific reference, all
information applies to all models.
Overview of the User’s Guide
? ?Chapter 1, Introduction. Provides information on Fast
Ethernet networks, and introduces the features of the TE100-
DM/DS series hubs.
? ?Chapter 2, Unpacking and Setup. Helps you get started in
setting up the hub.
? ?Chapter 3, Understanding Indicators. Describes all LED in-
dicators on the hub’s front panel. Understanding these
indicators is essential to effectively using the hub.
? ?Chapter 4, Making Connections. Provides information on
connecting to the hub’s twisted-pair and console ports, stack-
ing hubs, and linking with other 100BASE-TX hubs.
? ?Chapter 5, Master Hub Setup and Management. Provides
information on using the management agent built into master
models in the DH series.
? ?Appendix A, Cables and Connectors. Provides specifications
on the cables and connectors used with the hubs.
? ?Appendix B, Boot Configuration File. Describes the TE100-
DM/DS series master hub boot configuration file.

About This Guide
xiii
? ?Appendix C, Specifications. Lists the hubs’ specifications.
? ?Appendix D, Glossary. Provides the meaning for some net-
working terms used in this manual.

Introduction 1
1
1 INTRODUCTION
This chapter introduces the TE100-DM/DS series dual-speed stack-
able hubs, as well as giving some background information about the
technology the hubs use.
Product Description
The TE100-DM/DS series dual-speed stackable Ethernet/Fast
Ethernet hubs are designed to allow easy migration and integration
between 10Mbps Ethernet and 100Mbps Fast Ethernet, while provid-
ing manageability and flexibility in cable connections.
The TE100-DM/DS hubs can operate with either IEEE 802.3
10BASE-Tconnections (twisted-pair Ethernet operating at 10 mega-
bits per second), or IEEE 802.3u 100BASE-TX connections (twisted-
pair Fast Ethernet operating at 100 megabits per second). All of the
twisted-pair ports support NWay auto-negotiation, allowing the hub
to automatically detect the speed of a network connection. This
means you can connect all of your Ethernet and Fast Ethernet hosts
to a TE100-DM/DS series hub stack, without any rewiring required
when a host is upgraded from 10Mbps to 100Mbps.
The TE100-DM/DS series hubs, available in 16-port and 24-port
models, can be stacked with up to five hubs in a stack. A stack of
five 24-port hubs gives a total of 120 Ethernet or Fast Ethernet ports.

Dual-Speed Stackable Hubs User’s Guide
Introduction2
A TE100-DM/DS series hub stack operates as a Class II Fast
Ethernet repeater, allowing it to be linked to another Class II Fast
Ethernet stack in the same collision domain.
In the basic configuration, the 10Mbps and 100Mbps segments are
separate and do not intercommunicate. An optional switch module
(included with the TE100-DS16X, TE100-DS24X, TE100-DM16X, and
TE100-DM24X) can be installed in any hub in the stack, making it
possible to transparently bridge between the 10Mbps and 100Mbps
segments. In a managed hub stack, more than one switch module
can be used to provide redundancy if the two modules are both in the
primary master hub segment.
Other add-in modules are also available, providing switched
100BASE-TX, or switched 100BASE-FX connections. TE100-DM/DS
series hubs each have two slots for accepting slide-in modules.
Product Features
The list below highlights the features and specifications of the
TE100-DM/DS series hubs.
? ?Compatible with the IEEE 802.3 10BASE-TEthernet and
802.3u 100BASE-TX Fast Ethernet industry standards for in-
teroperability with other Ethernet/Fast Ethernet network
devices.
? ?Ethernet connections support Category 3 or better twisted-pair
cables.
? ?Fast Ethernet connections support both shielded twisted pair
and Category 5 unshielded twisted-pair cables.
? ?Fast Ethernet connections support a maximum distance of 100
meters from end-station to hub, and a total network diameter
of 205 meters.

Introduction 3
? ?Sixteen (TE100-DS16, TE100-DS16X, TE100-DM16, TE100-
DM16X) or twenty-four (TE100-DS24, TE100-DS24X, TE100-
DM24, TE100-DM24X) NWay RJ-45 ports for connecting sta-
tions to the network.
? ?Full hub stack and network management provided via a
SNMP management agent (TE100-DM16, TE100-DM16X,
TE100-DM24, TE100-DM24X).
? ?An optional slide-in switch module allows bridging between
10Mbps and 100Mbps segments. Only one switch module is
needed per stack, but managed hub stacks can make use of
additional switch modules for redundancy.
? ?LED indicators for power, collisions, link, network activity,
partitioning status, disable, operating speed (10 or 100Mbps)
and network utilization.
? ?Digital hub ID number front panel display.
? ?Auto-partition protection.
? ?Data collision detection and handling.
? ?Preamble regeneration, signal re-timing.
? ?Two proprietary daisy-chain ports for cascading up to five hubs
to form one logical hub; management provided via a master
hub.
? ?Standby backup master capability when two master model
hubs are present within a single stack.
? ?Uplink port allows easy linking of two Fast Ethernet hub
stacks to further expand your network.
? ?Standard-size (19”, 1.25U height), rack mountable
? ?Built-in, removable power supply, replaceable without opening
the hub. Power supply is easily removed and replaced. Auto-

Dual-Speed Stackable Hubs User’s Guide
Introduction
4
matic voltage selection (100V to 240V, 50 or 60Hz) without
fuses to change or a voltage switch to set.
? ?Optional slide-in modules: Switch, 100BASE-TX, and
100BASE-FX (see Chapter 4 : Making Connections).
Dual-Speed Ethernet Hub
Technology Overview
Dual-speed Ethernet hubs have been developed to make it simpler to
plan networks containing both 10Mbps Ethernet and 100Mbps Fast
Ethernet technologies, especially when network hosts are being
gradually migrated to new Fast Ethernet connections.
10Mbps Repeater
100Mbps Repeater
NWay Detection
RJ-45 Ports
100Mbps
Ethernet
Station
100Mbps
Ethernet
Station
10Mbps
Ethernet
Station
10Mbps
Ethernet
Station
100Mbps
Ethernet
Station
A dual-speed hub is actually two repeaters in one enclosure. The
10Mbps repeater receives Ethernet transmissions from any of its
ports, and retransmits them to all other ports operating at 10Mbps.
Similarly, the 100Mbps repeater retransmits Fast Ethernet trans-
missions from ports operating at 100Mbps to all other ports operating
at the same speed.

Introduction 5
If there is a switch module, or a TE100-DS16X, TE100-DM16X,
TE100-DS24X or TE100-DM24X hub presents in the stack, then the
switch module serves as a bridge between the two independent seg-
ments.
10Mbps Repeater
100Mbps Repeater
NWay Detection
RJ-45 Ports
100Mbps
Ethernet
Station
100Mbps
Ethernet
Station
10Mbps
Ethernet
Station
10Mbps
Ethernet
Station
100Mbps
Ethernet
Station
TE100-DSM
Switch
Module
100BASE-TX Technology Overview
100Mbps Fast Ethernet Introduction
Computers today have become increasingly powerful, with the capa-
bility to accommodate very sophisticated applications such as
multimedia applications, video-conferencing, and CAD/CAM. To util-
ize these technologically advanced applications more efficiently, there
is also a growing demand for faster networks that can handle heavy
network traffic.
Recognizing this need for greater bandwidth and lower latency, a
variety of technologies such as FDDI, ATM, and Fast Ethernet
(100Mbps) have been adopted by many vendors. Fast Ethernet tech-
nology stands out as the most inexpensive and smoothest migration

Dual-Speed Stackable Hubs User’s Guide
Introduction6
path for existing 10Mbps Ethernet users in part because it doesn’t
require a protocol translation when sharing data with 10Mbps
Ethernet.
Fast Ethernet is a relatively new standard specified by the IEEE
802.3 LAN committee. It is an extension of the 10Mbps Ethernet
standard with the ability to transmit and receive data at 100Mbps,
while maintaining the CSMA/CD Ethernet protocol. Since Fast
Ethernet is compatible with all 10Mbps Ethernet environments, it
provides a straightforward upgrade without wasting the company’s
existing investment in hardware, software, and trained personnel.
Cables and Connectors
Category 5unshielded twisted-pair (UTP) cables and shielded
twisted-pair (STP) cables are both supported. Category 5 UTP cable
uses the same RJ-45 connector used with 10BASE-T, wired in the
same configuration.
Topology
A Fast Ethernet workgroup is configured in a star topology and is
built around a maximum of two repeaters. Each workgroup forms a
separate LAN (also known as a segment or collision domain), and
these workgroups can be easily interconnected through switches,
bridges, or routers to form one LAN large enough to encompass a
high-rise building or campus environment. Recent innovations in
LAN hub technology such as stackable hubs, coupled with the de-
creasing cost of switches, bridges, and routers, allow the design of
low-cost, efficient Fast Ethernet workgroups and enterprise LANs.
The following factors strongly influence the architecture of Fast
Ethernet networks: