Trendnet TE100-S14 User Manual

TE-100/S14

10/100 Fast Ethernet Switch

Trademarks

100Base-TX and 10Base-T

User’s Guide

First Edition - October 31, 1995

Copyright  TRENDware
All rights reserved, contents are subject to revision without prior
notice.
TRENDnet  is a registered trademark of TRENDware

Ethernet is a trademark of Xerox Corporation.

Microsoft Windows is a trademark of Microsoft Corporation.

VT100 is a trademark of Digital Equipment Corporation.

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
commercial environment. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed and used
in accordance with the instruction manual, 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 may be required to correct the
interference at his or her own expense.

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Technical support information

TRENDware provides technical support worldwide. In USA, the
BBS number is 1-310-328-8191 (protocol: 14400, 8 N 1).

U.S.A.

TEL

1-310-328-7795

FAX

1-714-328-7798

This Manual

This manual is the user’s reference guide of the TE-100/S14
Switch for connecting the Fast Ethernet 100Base-TX and

Ethernet 10Base-T Local Area Network. It provides detailed
information on the features, functions and installation of this
Switch. It also provides information regarding the network
management and cabling environment in which the Switch will be
installed.

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The TE-100/S14 Fast Ethernet Switch

Contents at a glance:

Chapter 1, Introduction - Provides an overview of the Fast

Ethernet and Switching technology; their use and benefits in the
current and emerging computing and networking environment;
and finally, a brief description of the major feature of the TE­100/S14 Fast Ethernet Switch.

Chapter 2, Getting Started - Describes the cabling

environment, and the preparation for setting-up and integrating
the TE-100/S14 Switch into a LAN network.

Chapter 3, Configuring the Switch - Details the setup

procedures of the TE-100/S14 Switch to ensure its proper
operation in a network.

Chapter 4, Network Management - Addresses the

information regarding the operation of the TE-100/S14 Switch in
a SNMP network environment.

Chapter 5, Diagnostics - Helps users to understand the

status LED lights of the TE-100/S14 Switch, and to isolate
problem areas that may arise during installation.

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Table of Contents

CHAPTER 1 INTRODUCTION 7

Fast Ethernet Technology 7

Switching technology 8

10/100 Switching technology 9

Benefits of Switching 9

Overview of the TE-100/S14 Ethernet Switch 10

CHAPTER 2 INSTALLATION 11

Cabling Requirement and Site Preparation 11

Unpacking and Setup 14

Unpacking 14
Operational Function Description 15
Power on 15
Mounting 16
Connecting network cables 16
Setup 17
Checking Status LED lights 17

CHAPTER 3 CONFIGURING THE SWITCH 19

Introduction 19

RS-232 Port Connection 20

Out-of-Band Management 20

Port Management 24

Spanning Tree Algorithm 25

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CHAPTER 4 NETWORK MANAGEMENT 31

Operating within the SNMP environment 31

Operating without the SNMP environment 31

CHAPTER 5 DIAGNOSTICS 33

Power-On Self Test 33

System Status 34

LAN segment LED Status 34

APPENDICES 35

Appendix A Status LED Indicators 35

System & LAN port Status 35
LAN Segment Status 36

Appendix B Switch Default setting 37

Appendix C RS-232 Pin Specification 38

Appendix D RJ-45 Pin Specification 39

Appendix E Specifications 41

Port Configuration 41
Hardware 42

Index 43

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Chapter 1 Introduction

Fast Ethernet Technology

The growing importance of LANs and the increasing complexity
of desktop computing applications are fueling the needs for high
performance networks. A number of high-speed LAN
technologies are proposed or available to provide greater
bandwidth and improve client/server response times. Among
them, Fast Ethernet, or 100Base-T, provides a non-disruptive,
smooth evolution from the current 10Base-T technology, that by
statistics, is installed in over 70% of LANs worldwide. The non­disruptive and smooth evolution nature, and the dominating
potential market base, virtually guarantee cost effective and high
performance Fast Ethernet solutions in the years to come.

100Base-T is an IEEE standard for a 100Mbps version of 10Base­T. As Table Chapter

10Base-T, only faster. It provides 10 times the performance of
10Base-T for less than twice the price. Like 10Base-T, it uses the
same CSMA/CD access method with a protocol standard proven
by over 70% of installed LANs over the last 20 years.

1 -1 shows, 100Base-T is essentially

Except for reducing the “bit time” by a factor of 10 from the
CSMA/CD MAC of the 10Base-T, 100Base-T uses the same
packet format, packet length, error control, and management
information.

As part of the 100Base-T, the media specifications - 100Base-TX,
T4, FX - further enables users to retain their existing cabling
infrastructure while migrating to Fast Ethernet.

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Speed 10Mbps 100Mbps

Cost x 2x or less

IEEE Standard CSMA/CD CSMA/CD

Topology Star or Bus Star

Cabling UTP, Coax, Fiber UTP, Fiber

UTP cable supported Category 3,4, or 5 Category 3,4, or 5

UTP max. link distance 100 meters 100 meters

Collision domain
diameter (max. w/ UTP)

Max. network diameter

(using switches/routers)

Media Independent
Interface

Full duplex cabling Yes Yes

Table Chapter 1 -1, Ethernet vs. Fast Ethernet

Ethernet Fast Ethernet

500 meters 205 meters

Unlimited Unlimited

Yes (AUI) Yes (MII)

Switching technology

Another approach to pushing beyond the limits of Ethernet
technology is the development of the Switching technology. A
switch bridges Ethernet packets at the MAC address level of the
Ethernet protocol transmitting among connected Ethernet or Fast
Ethernet LAN segments.

Switched Ethernet vs. Legacy Ethernet is analogous to using
private telephone lines vs. party lines. Connecting to a switched
port, each Ethernet LAN segment has dynamic full performance
or “wire-speed”. Therefore, a switch effectively splits a physical
shared-access LAN into bridged multiple LAN segments. Each
segment supports a workgroup, or even provides a dedicated
connection to a desktop or server. The result is a multiple fold
boost in total network bandwidth, and more predictable
performance under heavy network load.

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10/100 Switching technology

10/100 Switching is an integral extension of Fast Ethernet. It
provides not only the 100Mbps high-speed “pipe-line” for
carrying aggregated 10Mbps traffic, but also the necessary
bridging between the 10Base-T and 100Base-T MAC formats.

Combining Fast Ethernet and Switching technologies, they
provide bandwidth to satisfy the demand of local workgroups.
They also provide a high-speed link to carry local network traffic
to elsewhere in a network.

Benefits of Switching

From the technical point of view, Ethernet switching technology
dramatically boosts the total bandwidth of a LAN network. It also
puts configuration flexibility and bandwidth adaptability into the
local workgroups where the majority of work load is generated
from a business operation. Switching further eliminates the
congestion problem inherent to the contention oriented Ethernet
CSMA/CD protocol, thereby improving predictable response
times under heavy network load. In the past, this congestion
under heavy load was alleviated by the much more expensive
routing technology.

From the workgroup applications point of view, the new wave of
Object oriented distributed Client/Server applications demands
higher bandwidth and tighter integration of client workstations
with servers. The legacy shared-access 10Mbps Ethernet
technology can no longer provide both bandwidth and predictable
response times to this new generation of workgroup environment.

From economics point of view, Fast Ethernet switching not only
satisfies both technical and business requirements, but also
preserves the existing users’ investment in the huge 10Base-T
Ethernet installed base. This compatibility insures a path for users
to add, change, and migrate to Fast Ethernet as needs arise over

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time. It also provides a less expensive and more flexible
bandwidth solution directly to local workgroups where the
majority of work load is generated, instead of using much more
expensive and management-intensive routers that usually cater to
the backbone network.

Overview of the TE-100/S14 Ethernet
Switch

The TRENDnet TE-100/S14 Ethernet Switch supports:

• One 100Mbps Fast Ethernet (100Base-TX) port and four

10Mbps Ethernet (10Base-T) ports, with each port supporting
dedicated full duplex LAN segments.

• Store-and-forward Ethernet packet switching.

• The IEEE 802.1D Spanning Tree Algorithm for network loop

detection and prevention, and topology re-configuration.

• One RS-232 port allowing local terminal access to

comprehensive setup and management functions.

• The EEPROM (flash memory) implementation allowing in-

field upgrade through the Out-of-Band RS-232 port.

• Comprehensive LED display of the System and individual

LAN segment status.

• Self-test during power on to ensure system integrity.

These features ensure that the TE-100/S14 Switch is suitable for
simple workgroups, and for large networks.

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Chapter 2 Installation

Cabling Requirement and Site Preparation

Due to the scaled-down MAC address slot time, 100Base-T (-TX,

-T4, -FX) has different topology rules than that of 10Base-T.
Figure Chapter

100Base-T.

The key cabling topology rules are:

• The maximum UTP cable length is 100 meters from an

end-station to a shared-access 100Base-TX hub.

2 -2 n Page 13 illustrates the topology rules of

• The maximum number of repeater counts (hops) is two in an

un-bridged all-UTP topology

• In a 2-repeater count, all-UTP topology, the maximum

cabling length is 205 meters for end-station / repeater /
repeater / end-station connections.

• In a single-repeater count UTP topology, a fiber cable

(100Base-FX) up to 205 meters can be used to connect
between a repeater and a backbone switch.

• A 400-meter half-duplex fiber cable is allowed for a MAC to

MAC connection (switch-to-switch).

The TE-100/S14 Switch fits into the 100Base-T cabling
architecture as an UTP end-station connecting to a 100Base-TX
cabling network. Therefore, the 100m UTP end-station
connection distance should be the only limitation in configuring

1

A single or a stacked 100Mbps hub is counted as one repeater. A

switch or a 10Base-T hub is not counted as a repeater, and is treated as
an end-station when applying the topology rules.

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1

.

the TE-100/S14 Switch under the 100Base-T cabling architecture.
Figure Chapter

100/S14 Switch in a 100Base-TX cabling network.

As required by the 100Base-TX, the TE-100/S14 Switch expects a
2-pair, data grade (EIA 568, Category 5) UTP or STP cabling
system connecting to its 100 Mbps port.

2 -1 shows the possible placements of the TE-

Figure Chapter 2 -1, Examples of the TE-100/S14 wiring

environment

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Careful planning and site preparation is the key to success for
installing Fast Ethernet switches. Users should perform a
network bandwidth analysis based on their workgroup network
traffic needs, and to examine their workstation equipment for
other performance bottlenecks.

Figure Chapter 2 -2, 100Base-T cabling rules

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Unpacking and Setup

Now you have a good understanding of the cabling rules, your
own cabling environment, and the expected network load on your
workgroups. You are ready to integrate your TE-100/S14 Switch
with your network.

The following sections delineate the steps to setup, connect and
integrate your newly acquired TE-100/S14 Switch into your
network.

UNPACKING

The TE-100/S14 Switch shipping carton (refer to Figure Chapter

2 -3

• 1 TE-100/S14 unit

• 1 AC power cord

• 2 Mounting brackets

• This user guide

If any item is found missing or damaged, please contact your local
TRENDnet reseller for replacement.

) should contain the following items:

Figure Chapter 2 -3, Unpacking a TE-100/S14

Switch

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