Accton Technology SUPERSMART ETHERHUB-16SE User Manual

Installation Manual

SuperSmart

EtherHub-16se

Installation Manual

SuperSmart

EtherHub-16se

Advanced

16-Port 10BASE-T

Smart Ethernet Hub

Copyright (c) 1995 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.

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No. 1 Creation Road III,
Science-based Industrial Park
Hsinchu 300, Taiwan, R.O.C.
Phone: [phone]
FAX: [phone]
BBS: 886-35-770-654
Internet: [e-mail]

:8&-HDGTXDUWHUV

1962 Zanker Road
San Jose, CA 95112
Phone: [phone]
FAX: [phone]
BBS: 408-452-8828
FAST FAX: [phone]

Accton, EtherHub and SwitcHub 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.

E0895-R01
150483-101

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. Its
operation 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.

A shielded transceiver cable is required to be used in order to ensure
compliance with FCC Part 15; it is the responsibility of the user to
provide such cable.

Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.

Canadian Standards Association (CSA) Statement

This digital apparatus does not exceed the Class A limits for
radio noise emissions from digital apparatus as set out in the
radio interference regulations of the Canadian Department of
Communciations.

FCC Warning i

Sicherheitshinweise

1. Die Steckdose muß sich in der Nähe des Gerätes befinden und leicht
änglich sein.

zug

2. Zum Reinigen den Stecker aus der Steckdose ziehen. Beim Reinigen

keine Fl
angefeuchtetes Tuch.

3. Das ...... ger

benutzen, wie z.B. Badezimmer, Schwimmbad, Sp
Eindringen von Wasser kann zur Zerst

4. Das ...... ger

Rollwagen, Gestell usw., aufstellen. Es k
Verletzungen oder Besch
verursachen.

5. Die Bel

fl
Zerst

6. Versuchen Sie niemals dieses Ger

oder Abnehmen des Geh
besteht.

7. Keine Gegenst

durch scharfe Kanten zerst

8. Keinerlei Gegenst

dadurch sonst zu Kurzschl

9. Bei St

10. Bei Reperaturen d
gleichen Eigenschaften verwendet werden. Andere Bauteile k
Feuer, elektrischen Schlag oder andere Gefahren verursachen.

11. Nach Beendigung von Wartungsarbeiten oder Reperaturen durch den
Kundendienst sollte die Sicherheitspr

12. Bei l
spannung zu trennen. Dies verhindert eine Besch
durch eine

Der arbeitsplatzbezogene L

üssigreiniger oder Sprays verwenden, sondern ein

ät nicht in Naßräume oder in der Nähe von Wasser

ülbecken usw. . Das

örung des Gerätes führen.

ät nicht auf einer unstabilen Unterlage, wie z.B.

önnte herunterfallen und

ädigungen von Mensch und Gerät

üftungsöffnungen nicht blockieren oder auf falscher Ober-

äche, wie Bett, Sofa usw., stellen. Durch die Blockierung kann es zur

örung des Gerätes durch Überhitzung kommen.

ät selbst zu warten, da beim Öffnen

äuses die Gefahr eines elektrischen Schlages

ände auf das Anschlußkabel stellen, damit es nicht

ört werden kann.

ände durch die Öffungen in das Gerät stecken, da es

üssen kommen kann.

örungen des Gerätes den Wartungsdienst verständigen.

ürfen nur Orginalersatzteile oder Bauteile mit

önnen

üfung durchgeführt werden.

ängerem Stillstand des Gerätes, ist diese von der Versorgungs-

ädigung des Gerätes

Überspannung in der Zuleitung.

ärmschutzpegel nach DIN 45 635 ist kleiner

70dB (A).

Sicherheitshinweise iii

Package Checklist

About this Guide

This is an installation guide for Accton’s SuperSmart Ethernet
Hub. It covers the following topics:

ì Hardware description and summary of features
ì Hardware installation procedure
ì System setup and configuration

Carefully unpack the contents of the package and verify them
against the checklist given below.

æ EtherHub-16se (Model No. EH2051)
æ One AC power cord
æ 0.5 meter FlexBus 1500 cable
æ Four rubber feet
æ BNC T-type connector and two 50-ohm (Ω) terminators

(for models with the BNC transceiver module only)

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
to Accton Technology Corporation.

About this Guide v

Owner Registration Card and return it

Contents

Chapter 1: Introduction 1-1

Overview 1-1
Features of the SuperSmart Hub 1-2

Chapter 2: Hardware Description 2-1

Front Panel Display 2-1

SmartWatch

PWR/CPU 2-2
Isolated 2-2
Utilization 2-2
Collision 2-3
Segment LED Indicators 2-4
Port Status Indicators 2-4
Partition 2-5
Link/Traffic 2-5

Diagnostic Test LED Indicators 2-6
Configure Button 2-7
Station Ports 2-8
Daisy-Chain Switch 2-8

Rear Panel Displays 2-9

Port Connections 2-9

FlexBus 1500™ 2-9

ALT Port 2-10

BNC Module (10BASE2) 2-10
Power Socket 2-10
Power Switch 2-10

 LED Panel 2-1

Chapter 3: Hardware Installation 3-1

Before You Begin 3-1
Hardware Installation 3-2

Stacking Hubs without a Rack 3-3
Mounting Hubs on a Rack 3-4
Connecting the Hub System 3-5

vii

SuperSmart User’s Guide

Chapter 4: Setup and Configuration 4-1

System Setup 4-1

Diagnostic Tests 4-1

Upon Power On 4-1

During Normal Operation 4-1
Multi-Segment Architecture 4-2
Hot Remove Function 4-2

Using the Configure Button 4-3

Selections Available 4-5

Appendix A: Product Specifications A-1

Features A-1
Physical Characteristics A-1
Standards Compliance A-2

Appendix B: Product Support Services B-1

Product Registration B-1
Problem Report B-1
Hardware Repair Service B-1
Software Update and Upgrade Service B-2
Bulletin Board Service (BBS) B-2
Interactive Fast Fax (U.S.A. office) B-3
Technical Support B-3
Limited Warranty B-4

Customer Remedies B-4
Return Process B-5

Ordering Information B-6

Glossary
Index

viii Contents

List of Figures

Figure 2.1 SmartWatch LED Panel 2-1
Figure 2.2 Daisy-Chain Switch Setting 2-8
Figure 2.3 The SuperSmart Rear Panel 2-9
Figure 3.1 Stacking Hubs without a Rack 3-3
Figure 3.2 Mounting Hubs Using a Mounting Rack 3-4

ix

Overview

Chapter 1: Introduction

The SuperSmart (EtherHub-16se) hub is a powerful and
innovative LAN network enhancement product. This hub
supports a multi-segment bus architecture that enhances traffic
flow and network bandwidth utilization. It offers the network
manager a wide range of flexible configuration options,

allowing you to effectively increase your network’s bandwidth.
The SuperSmart hub can be used in a stand-alone configuration

to form a simple LAN networking 2 to 16 computers using the
RJ-45 ports. Further network expansion can be achieved using
the trunk port connection (optional ALT PORT for BNC, AUI or
fiber-optic interface), or the RJ-45 daisy- chain port. Work stations
are connected to the SuperSm ar t st a ti o n p o r ts u s in g twisted -pair
cable.

SuperSmart is a 16-port intelligent 10BASE-T hub. It includes -

• 16 RJ-45 station ports for networking computers to the network

using twisted-pair cable

• 1 optional port for installing an AUI, BNC or fiber-optic

module, which permits connection to thick or thin Ethernet
or 10BASE-F cable

• 2 FlexBus 1500 ports for connecting to compatible hubs

via a FlexBus 1500 cable

• RJ-45 port 16 which can be converted to a daisy-chain port

) using the daisy-chain switch

(

• Comprehensive LED indicators on the front panel to provide

easy and quick configuration and monitoring of the unit

Alternative Interface Module -

• BNC (EH1551),

• AUI (EH1552)

• Fiber Optic (EH1553)

default module preinstalled in EH2051

1-1

SuperSmart User’s Guide

Features of the SuperSmart Hub

• One optional port (BNC, AUI or fiber-optic) for connecting

to any Ethernet media via slide-in alternative module
transceiver

• Supports daisy chaining by using a daisy-chain switch to

convert port 16 to a daisy-chain port

• Automatic polarity detection and correction permits

automatic recovery due to wiring errors

• Automatically partitions any bad port to protect the network

• Flexible installation for desktop, wall-mount, or rack

installation (standard 19” size)

• Provides multi-segment architecture allowing the network to

be split into three segments

• Includes a SmartWatch comprehensive LED indicator

panel for reporting network activity, unit configuration, and
facilitating problem diagnosis

• Two FlexBus 1500 interconnection ports (BUS IN/OUT) for

a bundled cable containing 3 separate Ethernet segments

• Provides front panel configuration using a Configure

button

• Stacked hubs can be distributed up to 100-meters in a single

segment configuration

1-2 Introduction

Front Panel Display

SmartWatch LED Panel

Chapter 2: Hardware Description

This chapter describes the hardware features of the SuperSmart hub.
Before connecting any network device to the hub, please read this
chapter carefully. For easier management and control of the hub,
familiarize yourself with the front panel indicators and

Configure button.

The SmartWatch LED panel includes comprehensive indicators
for monitoring the device and network status. A quick glance at

the front panel tells you if the unit’s power in ON, or if a
problem exists on the network. The following sections describe
the function of each indicator.

Figure 2.1 SmartWatch LED Panel

2-1

SuperSmart User’s Guide

PWR/CPU

Color: Green
Label: PWR/CPU
Function: Power indicator

LED Activity Condition Indication

STEADY LIGHT ON Unit is receiving power; CPU is running.
BLINKING LIGHT ON Unit is receiving power; CPU is running.
NO LIGHT OFF Power is disconnected; no power received.

Isolated

Color: Green
Label: Isolated
Function: Indicates the hub is isolated from Ethernet segment

of the FlexBus 1500 backplane.

LED Activity Condition Indication

STEADY LIGHT ON Hub is isolated from all segments.
NO LIGHT OFF Hub is attached to one of the 3 segments of

the FlexBus 1500.

Utilization

Label (%) Color Function

1% 5% 15% Green Indicates percentage utilization of LAN
30% Amber (yellow) bandwidth.
65+% Red

The Utilization LEDs indicate the percentage of network
bandwidth used by valid data. The hub updates this display
every 0.5 seconds.

There are 5 LEDs representing the percentage of network
utilization. The corresponding LEDs light to show that the
percentage utilization of LAN bandwidth has reached this level.
When active, these LEDs look like a stereo’s equalizer display.

2-2 Hardware Description

SuperSmart User’s Guide

For example, if network utilization reaches 1%, the LED
labeled 1% will light. However, if network utilization rises
above 1% (e.g., 30%), the LED labeled 30 and all the other
LEDs before it (i.e., 1, 5, and 15) will light in rapid succession.

These LEDs monitor the share of valid network frames
transmitted by this hub within a 10Mbps bandwidth. They
provide a quick way to monitor the current traffic load relative
to the network’s capacity.

Collision

Label (%) Color Function

1% 3% 5% Green Indicates the percentage of packet collisions
10% Amber (yellow) occurring out of the total packets received by
15+% Red the hub.

Collisions occur when two or more devices connected to a hub
attempt to transmit data simultaneously on the network. When
a collision occurs, devices pause and then re-transmit after a
pseudo-random wait period. Because wait periods differ among
devices, successive collisions become increasingly improbable.

The Collision LEDs assist the network manager in monitoring the
percentage of packet collisions occurring relative to the total
packets received by the hub. Similar to U tiliz ation LEDs, the
Collision LEDs have 5 numbers representing collision
percentage. When collisions reach a level marked on the LED
display, the corresponding LED lights up.

For example, if packet collisions reach 1%, the LED labeled
1% will light up. However, if collisions go beyond 1% (e.g.,
15%), the LED labeled 15+ and all the other LEDs before it
(i.e., 1, 3, 5, and 10) will also light up in rapid succession.

Hardware Description 2-3

SuperSmart User’s Guide

When more than 31 consecutive collisions occur on the cable segment

F

connected to a port, that port is automatically partitioned by the hub. The
hub automatically reconnects this port when a data packet longer than
512 bits (normal) is transmitted or received by the partitioned port without
collision. This applies to all RJ-45 station ports and the ALT PORT.

Segment LED Indicators

Color: Green
Label:

Function: Indicates which segment is attached to the hub.
There are 3 Ethernet segments embedded in the FlexBus 1500

ports located on the back plane of the SuperSmart hub. The unit
can be attached to any one of the three Ethernet segments. The 3­segment LED indicator displays a combination of ON/OFF lig hts
to show which segment the unit is connected to. The table below
shows the possible LED display combination of the segment
indicators marked "1 2 3" and their corresponding m eaning .

Segment Description

1 2 3
ON OFF OFF Hub is connected to Segment 1 (Default)
OFF ON OFF Hub is connected to Segment 2
OFF OFF ON Hub is connected to Segment 3

The SuperSmart hub can be completely isolated except for the

F

2-4 Hardware Description

management channel (which is reflected via the Isolated LED).

Port Status Indicators

There are 17 pairs of port status LED indicators. Each pair consists
of a Partition LED (top row) and Link/Traffic LED (bottom row ).
Each pair (or column) has a label referring to the port number the
LEDs monitor. For example, the port status LED pair labeled ALT
monitors the optional port found at the rear panel (labeled ALT
PORT). The other 16 pairs are for the RJ-45 ports on the front
panel of the hub.