TRENDnet TE100-S14 Manuale utente

TE-100/S14

10/100 Fast Ethernet Switch

100Base-TX and 10Base-T

User’s Guide

First Edition - October 31, 1995

Trademarks

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.

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.

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 TE-

100/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.

The TE-100/S14 Fast Ethernet Switch

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

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

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 non-

disruptive 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 10Base-

T. As Table Chapter 1 -1 shows, 100Base-T is essentially

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.

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.

Ethernet Fast Ethernet

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)

500 meters 205 meters

Max. network diameter

(using switches/routers)

Unlimited Unlimited

Media Independent

Interface

Yes (AUI) Yes (MII)

Full duplex cabling Yes Yes

Table Chapter 1 -1, Ethernet vs. Fast Ethernet

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.

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

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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