Edge-Core ES3528M, ES3552M Installation Manual

ES3528M

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ES3552M
Fast Ethernet Switch

Installation Guide

Installationsanleitung

www.edge-core.com

Installation Guide

Fast Ethernet Switch

Layer 2 Workgroup Switch
with 24/48 10/100BASE-T (RJ-45) Ports,
and 4 Combination Gigabit (RJ-45/SFP) Ports

ES3528M
ES3552M
E092006-MT-R03

49100010700H

1

Compliances and Safety Warnings

FCC - Class A

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 will be
required to correct the interference at his own expense.

You are cautioned that changes or modifications not expressly approved by the party
responsible for compliance could void your authority to operate the equipment.

You may use unshielded twisted-pair (UTP) for RJ-45 connections - Category 3 or better
for 10 Mbps connections, Category 5 or better for 100 Mbps connections, Category 5, 5e,
or 6 for 1000 Mbps connections. For fiber optic connections, you may use 50/125 or 62.5/
125 micron multimode fiber or 9/125 micron single-mode fiber.

Industry Canada - Class A

This digital apparatus does not exceed the Class A limits for radio noise emissions from
digital apparatus as set out in the interference-causing equipment standard entitled
“Digital Apparatus,” ICES-003 of the Department of Communications.

Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux
appareils numériques de Classe A prescrites dans la norme sur le matériel brouilleur:
“Appareils Numériques,” NMB-003 édictée par le ministère des Communications.

Japan VCCI Class A

i

CE Mark Declaration of Conformance for EMI and Safety (EEC)

This information technology equipment complies with the requirements of the Council
Directive 89/336/EEC on the Approximation of the laws of the Member States relating to
Electromagnetic Compatibility and 73/23/EEC for electrical equipment used within certain
voltage limits and the Amendment Directive 93/68/EEC. For the evaluation of the
compliance with these Directives, the following standards were applied:

RFI Emission: • Limit class A according to EN 55022:1998

• Limit class A for harmonic current emission according to EN 61000-3-2/1995

• Limitation of voltage fluctuation and flicker in low-voltage supply system
according to EN 61000-3-3/1995

Immunity: • Product family standard according to EN 55024:1998

• Electrostatic Discharge according to EN 61000-4-2:1995
(Contact Discharge: ±4 kV, Air Discharge: ±8 kV)

• Radio-frequency electromagnetic field according to EN 61000-4-3:1996
(80 - 1000 MHz with 1 kHz AM 80% Modulation: 3 V/m)

• Electrical fast transient/burst according to EN 61000-4-4:1995 (AC/DC power
supply: ±1 kV, Data/Signal lines: ±0.5 kV)

• Surge immunity test according to EN 61000-4-5:1995
(AC/DC Line to Line: ±1 kV, AC/DC Line to Earth: ±2 kV)

• Immunity to conducted disturbances, Induced by radio-frequency fields:
EN 61000-4-6:1996 (0.15 - 80 MHz with 1 kHz AM 80% Modulation: 3 V/m)

• Power frequency magnetic field immunity test according to
EN 61000-4-8:1993
(1 A/m at frequency 50 Hz)

• Voltage dips, short interruptions and voltage variations immunity test
according to EN 61000-4-11:1994 (>95% Reduction @10 ms, 30%
Reduction @500 ms, >95% Reduction @5000 ms)

LVD: • EN 60950-1:2001

Caution: Do not plug a phone jack connector in the RJ-45 port. This may damage this

device.

Attention: Les raccordeurs ne sont pas utilisés pour le système téléphonique!

Australia AS/NZS 3548 (1995) - Class A

ACN 066 352 010

ii

Safety Compliance

Warning: Fiber Optic Port Safety

When using a fiber optic port, never look at the transmit laser while it is

CLASS I

LASER DEVICE

powered on. Also, never look directly at the fiber TX port and fiber cable
ends when they are powered on.

Avertissment: Ports pour fibres optiques - sécurité sur le plan optique

Ne regardez jamais le laser tant qu'il est sous tension. Ne regardez

DISPOSITIF LASER

DE CLASSE I

jamais directement le port TX (Transmission) à fibres optiques et les
embouts de câbles à fibres optiques tant qu'ils sont sous tension.

Warnhinweis: Faseroptikanschlüsse - Optische Sicherheit

LASERGER
DER KLASSE I

ÄT

Niemals ein Übertragungslaser betrachten, während dieses
eingeschaltet ist. Niemals direkt auf den Faser-TX-Anschluß
und auf die Faserkabelenden schauen, während diese
eingeschaltet sind.

Please read the following safety information carefully before
installing the switch:

WAR NING: Installation and removal of the unit must be carried out by qualified personnel
only.

• The unit must be connected to an earthed (grounded) outlet to comply with international
safety standards.

• Do not connect the unit to an A.C. outlet (power supply) without an earth (ground)
connection.

• The appliance coupler (the connector to the unit and not the wall plug) must have a
configuration for mating with an EN 60320/IEC 320 appliance inlet.

• The socket outlet must be near to the unit and easily accessible. You can only remove
power from the unit by disconnecting the power cord from the outlet.

• This unit operates under SELV (Safety Extra Low Voltage) conditions according to
IEC 60950. The conditions are only maintained if the equipment to which it is connected
also operates under SELV conditions.

France and Peru only

This unit cannot be powered from IT

†

supplies. If your supplies are of IT type, this unit
must be powered by 230 V (2P+T) via an isolation transformer ratio 1:1, with the
secondary connection point labelled Neutral, connected directly to earth (ground).

†

Impédance à la terre

iii

Power Cord Set

U.S.A. and Canada The cord set must be UL-approved and CSA certified.

The minimum specifications for the flexible cord are:

- No. 18 AWG - not longer than 2 meters, or 16 AWG.

- Type SV or SJ

- 3-conductor

The cord set must have a rated current capacity of at least 10 A

The attachment plug must be an earth-grounding type with NEMA
5-15P (15 A, 125 V) or NEMA 6-15P (15 A, 250 V) configuration.

Denmark The supply plug must comply with Section 107-2-D1, Standard

DK2-1a or DK2-5a.

Switzerland The supply plug must comply with SEV/ASE 1011.

U.K. The supply plug must comply with BS1363 (3-pin 13 A) and be fitted

with a 5 A fuse which complies with BS1362.

The mains cord must be <HAR> or <BASEC> marked and be of type
HO3VVF3GO.75 (minimum).

Europe The supply plug must comply with CEE7/7 (“SCHUKO”).

The mains cord must be <HAR> or <BASEC> marked and be of type
HO3VVF3GO.75 (minimum).

IEC-320 socket.

Veuillez lire à fond l'information de la sécurité suivante avant
d'installer le Switch:

AVERTISSEMENT: L’installation et la dépose de ce groupe doivent être confiés à un
personnel qualifié.

• Ne branchez pas votre appareil sur une prise secteur (alimentation électrique) lorsqu'il
n'y a pas de connexion de mise à la terre (mise à la masse).

• Vous devez raccorder ce groupe à une sortie mise à la terre (mise à la masse) afin de
respecter les normes internationales de sécurité.

• Le coupleur d’appareil (le connecteur du groupe et non pas la prise murale) doit

respecter une configuration qui permet un branchement sur une entrée d’appareil EN
60320/IEC 320.

• La prise secteur doit se trouver à proximité de l’appareil et son accès doit être facile.

Vous ne pouvez mettre l’appareil hors circuit qu’en débranchant son cordon électrique
au niveau de cette prise.

• L’appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à

la norme IEC 60950. Ces conditions ne sont maintenues que si l’équipement auquel il
est raccordé fonctionne dans les mêmes conditions.

iv

France et Pérou uniquement:

Ce groupe ne peut pas être alimenté par un dispositif à impédance à la terre. Si vos
alimentations sont du type impédance à la terre, ce groupe doit être alimenté par une
tension de 230 V (2 P+T) par le biais d’un transformateur d’isolement à rapport 1:1, avec
un point secondaire de connexion portant l’appellation Neutre et avec raccordement
direct à la terre (masse).

Cordon électrique -

Etats-Unis et
Canada:

Danemark: La prise mâle d’alimentation doit respecter la section 107-2 D1 de la

Suisse: La prise mâle d’alimentation doit respecter la norme SEV/ASE 1011.

Europe La prise secteur doit être conforme aux normes CEE 7/7 (“SCHUKO”)

Il doit être agréé dans le pays d’utilisation

Le cordon doit avoir reçu l’homologation des UL et un certificat de la
CSA.

Les spe'cifications minimales pour un cable flexible sont AWG No.
18, ouAWG No. 16 pour un cable de longueur infe'rieure a` 2 me'tres.

- type SV ou SJ

- 3 conducteurs

Le cordon doit être en mesure d’acheminer un courant nominal d’au
moins 10 A.

La prise femelle de branchement doit être du type à mise à la terre
(mise à la masse) et respecter la configuration NEMA 5-15P (15 A,
125 V) ou NEMA 6-15P (15 A, 250 V).

norme DK2 1a ou DK2 5a.

LE cordon secteur doit porter la mention <HAR> ou <BASEC> et doit
être de type HO3VVF3GO.75 (minimum).

Bitte unbedingt vor dem Einbauen des Switches die folgenden
Sicherheitsanweisungen durchlesen:

WARNUNG: Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal
erfolgen.

• Das Gerät sollte nicht an eine ungeerdete Wechselstromsteckdose angeschlossen
werden.

• Das Gerät muß an eine geerdete Steckdose angeschlossen werden, welche die
internationalen Sicherheitsnormen erfüllt.

• Der Gerätestecker (der Anschluß an das Gerät, nicht der Wandsteckdosenstecker) muß
einen gemäß EN 60320/IEC 320 konfigurierten Geräteeingang haben.

• Die Netzsteckdose muß in der Nähe des Geräts und leicht zugänglich sein. Die
Stromversorgung des Geräts kann nur durch Herausziehen des Gerätenetzkabels aus
der Netzsteckdose unterbrochen werden.

• Der Betrieb dieses Geräts erfolgt unter den SELV-Bedingungen
(Sicherheitskleinstspannung) gemäß IEC 60950. Diese Bedingungen sind nur gegeben,
wenn auch die an das Gerät angeschlossenen Geräte unter SELV-Bedingungen
betrieben werden.

v

Stromkabel. Dies muss von dem Land, in dem es benutzt wird geprüft werden:

Schweiz Dieser Stromstecker muß die SEV/ASE 1011Bestimmungen einhalt-

en.

Europe Das Netzkabel muß vom Typ HO3VVF3GO.75 (Mindestanforderung)

sein und die Aufschrift <HAR> oder <BASEC> tragen.
Der Netzstecker muß die Norm CEE 7/7 erfüllen (”SCHUKO”).

Warnings and Cautionary Messages

Warning: This product does not contain any serviceable user parts.
Warning: Installation and removal of the unit must be carried out by qualified

personnel only.

Warning: When connecting this device to a power outlet, connect the field ground lead

on the tri-pole power plug to a valid earth ground line to prevent electrical
hazards.

Warning: This switch uses lasers to transmit signals over fiber optic cable. The lasers

are compliant with the requirements of a Class 1 Laser Product and are
inherently eye safe in normal operation. However, you should never look
directly at a transmit port when it is powered on.

Caution: Do not plug a phone jack connector in the RJ-45 port. This may damage this

device. Les raccordeurs ne sont pas utilisé pour le système téléphonique!

Caution: Use only twisted-pair cables with RJ-45 connectors that conform to FCC

standards.

Caution: Wear an anti-static wrist strap or take other suitable measures to prevent

electrostatic discharge when handling this equipment.

Warnings (In German)

Achtung:

Achtung: Wenn das Gerät an eine Steckdose angeschlossen wird, muß der

Achtung: Dieses Gerät nutzt Laser zur Signalübertragung über Glasfasern. Die Laser

Dieses Produkt enthält keine Teile, die eine Wartung vom Benutzer
benötigen.

Masseanschluß am dreipoligen Netzstecker mit Schutzerde verbunden
werden, um elektrische Gefahren zu vermeiden.

entsprechen den Anforderungen an eine Lasereinrichtung der Klasse 1 und
sind durch ihre Bauart im normalen Betrieb sicher für die Augen. Trotzdem
sollte niemals direkt in den einen Übertragungskanal geblickt werden, wenn
er eingeschaltet ist.

vi

Environmental Statement

The manufacturer of this product endeavours to sustain an environmentally-friendly policy
throughout the entire production process. This is achieved though the following means:

• Adherence to national legislation and regulations on environmental production
standards.

• Conservation of operational resources.

• Waste reduction and safe disposal of all harmful un-recyclable by-products.

• Recycling of all reusable waste content.

• Design of products to maximize recyclables at the end of the product’s life span.

• Continual monitoring of safety standards.

End of Product Life Span

This product is manufactured in such a way as to allow for the recovery and disposal of all
included electrical components once the product has reached the end of its life.

Manufacturing Materials

There are no hazardous nor ozone-depleting materials in this product.

Documentation

All printed documentation for this product uses biodegradable paper that originates from
sustained and managed forests. The inks used in the printing process are non-toxic.

Purpose

This guide details the hardware features of the switch, including the physical and
performance-related characteristics, and how to install the switch.

Audience

The guide is intended for use by network administrators who are responsible for installing
and setting up network equipment; consequently, it assumes a basic working knowledge
of LANs (Local Area Networks).

Diese Anleitung ist für die Benutzung durch Netzwerkadministratoren vorgesehen, die für
die Installation und das einstellen von Netzwerkkomponenten verantwortlich sind; sie
setzt Erfahrung bei der Arbeit mit LANs (Local Area Networks) voraus.

Related Publications

The following publication gives specific information on how to operate and use the
management functions of the switch:

The Fast Ethernet Switch Management Guide

Also, as part of the switch’s firmware, there is an online web-based help that describes all
management related features.

vii

viii

Contents

Chapter 1: Introduction 1-1

Overview 1-1

Switch Architecture 1-2
Network Management Options 1-2

Description of Hardware 1-2

10/100BASE-T Ports 1-2
SFP Slots 1-2
Port and System Status LEDs 1-3
Power Supply Sockets 1-5

Features and Benefits 1-5

Connectivity 1-5
Expandability 1-6
Performance 1-6
Management 1-6

Chapter 2: Network Planning 2-1

Introduction to Switching 2-1
Application Examples 2-2

Collapsed Backbone 2-2
Network Aggregation Plan 2-3
Remote Connection with Fiber Cable 2-4
Making VLAN Connections 2-5

Application Notes 2-6

Chapter 3: Installing the Switch 3-1

Selecting a Site 3-1
Ethernet Cabling 3-1
Equipment Checklist 3-2

Package Contents 3-2
Optional Rack-Mounting Equipment 3-2

Mounting 3-3

Rack Mounting 3-3
Desktop or Shelf Mounting 3-4

Installing an Optional SFP Transceiver 3-5
Connecting to a Power Source 3-6
Connecting to the Console Port 3-7

Wiring Map for Serial Cable 3-7

ix

Contents

Chapter 4: Making Network Connections 4-1

Connecting Network Devices 4-1
Twisted-Pair Devices 4-1

Cabling Guidelines 4-1
Connecting to PCs, Servers, Hubs and Switches 4-1

Network Wiring Connections 4-2
Fiber Optic SFP Devices 4-3
Connectivity Rules 4-4

1000BASE-T Cable Requirements 4-4

1000 Mbps Gigabit Ethernet Collision Domain 4-5

100 Mbps Fast Ethernet Collision Domain 4-5

10 Mbps Ethernet Collision Domain 4-5
Cable Labeling and Connection Records 4-6

Appendix A: Troubleshooting A-1

Diagnosing Switch Indicators A-1
Power and Cooling Problems A-1
Installation A-1
In-Band Access A-2

Appendix B: Cables B-1

Twisted-Pair Cable and Pin Assignments B-1

10BASE-T/100BASE-TX Pin Assignments B-1

Straight-Through Wiring B-2

Crossover Wiring B-2

1000BASE-T Pin Assignments B-3

Appendix C: Specifications C-1

Switch Features C-2
Management Features C-2
Standards C-3
Compliances C-3

Appendix D: German Instructions D-1

Eine Site auswahlen D-1
Montage (Rack Mounting Instructions - German) D-2

Rack-Montage D-2

Glossary

Index

x

Tables

Table 1-1 ES3528M Port Status LEDs 1-3
Table 1-2 ES3552M Port Status LEDs 1-4
Table 1-3 System Status LEDs 1-5
Table 3-1. Serial Cable Wiring 3-7
Table 4-1. Maximum 1000BASE-T Gigabit Ethernet Cable Length 4-5
Table 4-2. Maximum 1000BASE-SX Gigabit Ethernet Cable Length 4-5
Table 4-3. Maximum 1000BASE-LX Gigabit Ethernet Cable Length 4-5
Table 4-4. Maximum 1000BASE-LH Gigabit Ethernet Cable Length 4-5
Table 4-5. Maximum Fast Ethernet Cable Length 4-5
Table 4-6. Maximum Ethernet Cable Length 4-5
Table A-1. Troubleshooting Chart A-1
Table B-1. 10/100BASE-TX MDI and MDI-X Port Pinouts B-2
Table B-2. 1000BASE-T MDI and MDI-X Port Pinouts B-3

xi

Figures

Figure 1-1. ES3528M Front and Rear Panels 1-1
Figure 1-2. ES3552M Front and Rear Panels 1-1
Figure 1-3. ES3528M Port Status LEDs 1-3
Figure 1-4. ES3552M Port Status LEDs 1-3
Figure 1-5. ES3528M System Status LED 1-4
Figure 1-6. ES3552M System Status LED 1-4
Figure 1-7. ES3528M Power Supply Sockets 1-5
Figure 1-8. ES3552M Power Supply Sockets 1-5
Figure 2-1. Collapsed Backbone 2-2
Figure 2-2. Network Aggregation Plan 2-3
Figure 2-3. Remote Connection with Fiber Cable 2-4
Figure 2-4. Making VLAN Connections 2-5
Figure 3-1. RJ-45 Connections 3-2
Figure 3-2. Attaching the Brackets 3-3
Figure 3-3. Installing the Switch in a Rack 3-4
Figure 3-4. Attaching the Adhesive Feet 3-4
Figure 3-5. Inserting an SFP Transceiver into a Slot 3-5
Figure 3-6. Power Sockets 3-6
Figure 3-7. Serial Port (DB-9 DTE) Pin-Out 3-7
Figure 4-1. Making Twisted-Pair Connections 4-1
Figure 4-2. Network Wiring Connections 4-2
Figure 4-3. Making Fiber Port Connections 4-4
Figure B-1. RJ-45 Connector Pin Numbers B-1
Figure B-2. Straight-through Wiring B-2
Figure B-3. Crossover Wiring B-3

xii

Chapter 1: Introduction

Overview

The ES3528M and ES3552M switches are intelligent switches with 24/48 10/

1

100BASE-T ports, and four Gigabit combination ports
RJ-45 port and an SFP transceiver slot. There is also an SNMP-based management
agent embedded on the main board. This agent supports both in-band and
out-of-band access for managing the switch.

These switches provide a broad range of powerful features for Layer 2 switching,
delivering reliability and consistent performance for your network traffic. They bring
order to poorly performing networks by segregating them into separate broadcast
domains with IEEE 802.1Q compliant VLANs, and empower multimedia applications
with multicast switching and CoS services.

that are comprised of a

Port Status Indicators

System Indicators

Figure 1-1. ES3528M Front and Rear Panels

10/100 Mbps RJ-45 Ports

Console Port

10/100 Mbps RJ-45 Ports Console Port

Port Status Indicators

Combination Gigabit Ports

Combination Gigabit Ports

Power Socket

Power Socket

System Indicators

Figure 1-2. ES3552M Front and Rear Panels

1. RJ-45 ports shared with a SFP tranceiver slots. If an SFP transceiver is plugged in, the
corresponding RJ-45 port is disabled.

1-1

1

Introduction

Switch Architecture

These switches employ a wire-speed, non-blocking switching fabric. This permits
simultaneous wire-speed transport of multiple packets at low latency on all ports.
These switches also features full-duplex capability on all ports, which effectively
doubles the bandwidth of each connection.

These switches use store-and-forward switching to ensure maximum data integrity.

With store-and-forward switching, the entire packet must be received into a buffer
and checked for validity before being forwarded. This prevents errors from being
propagated throughout the network.

Network Management Options

These switches contain a comprehensive array of LEDs for “at-a-glance” monitoring
of network and port status. They also include a management agent that allows you
to configure or monitor the switch using its embedded management software, or via
SNMP applications. To manage a switch, you can make a direct connection to the
RS-232 console port (out-of-band), or you can manage it through a network
connection (in-band) using Telnet, the on-board Web agent, or Windows-based
network management software.

For a detailed description of the switch’s advanced features, refer to the Fast
Ethernet Switch Management Guide.

Description of Hardware

10/100BASE-T Ports

These switches contain 24/48 RJ-45 ports that operate at 10 Mbps or 100 Mbps, half
or full duplex. Because all ports on both switches support automatic MDI/MDI-X
operation, you can use straight-through cables for all network connections to PCs or
servers, or to other switches or hubs. (See “10BASE-T/100BASE-TX Pin
Assignments” on page B-1.)

Each of these ports support auto-negotiation, so the optimum transmission mode
(half or full duplex), and data rate (10 or 100 Mbps) can be selected automatically. If
a device connected to one of these ports does not support auto-negotiation, the
communication mode of that port can be configured manually.

Each port also supports auto-negotiation of flow control, so the switch can
automatically prevent port buffers from becoming saturated.

SFP Slots

The Small Form Factor Pluggable (SFP) transceiver slots are shared with four of the
RJ-45 ports. In its default configuration, if an SFP transceiver (purchased
separately) is installed in a slot and has a valid link on its port, the associated RJ-45
port is disabled and cannot be used. The switch can also be configured to force the
use of an RJ-45 port or SFP slot, as required.

1-2

Description of Hardware

Port and System Status LEDs

The LEDs, which are located on the front panel for easy viewing, are shown below
and described in the following table.

1

Port Status LEDs

Figure 1-3. ES3528M Port Status LEDs

Table 1-1 ES3528M Port Status LEDs

LED Condition Status

RJ-45 Ports

Link/ACT
(Link/Activity)

Combination Gigabit Ports

On/Blinking
Green

Off There is no valid link on the port.

The port has a valid 10 or 100 Mbps link. Blinking indicates
activity.

Combination Gigabit Port Status LEDs

Link/ACT
(Link/Activity)

1000M On/Blinking

On/Blinking
Green

Off There is no valid link on the port.

Green

Off There is no valid 1000 Mbps link on the port.

Port Status LEDs

Figure 1-4. ES3552M Port Status LEDs

The port has a valid 10/100/1000 Mbps link. Blinking
indicates activity.

The port has a valid 1000 Mbps link. Blinking indicates
activity.

Combination Gigabit Port Status LEDs

1-3

1

Introduction

Table 1-2 ES3552M Port Status LEDs

LED Condition Status

RJ-45 Ports

Link/ACT
(Link/Activity)

Combination Gigabit Ports

Link/ACT/1000M
(Link/Activity/
1000M)

On/Blinking
Green

On/Blinking
Amber

Off There is no valid link on the port.

On/Blinking
Green

On/Blinking
Amber

Off There is no valid link on the port.

The port has a valid 100 Mbps link. Blinking indicates
activity.

The port has a valid 10 Mbps link. Blinking indicates
activity.

The port has a valid 1000 Mbps link. Blinking indicates
activity.

The port has a valid 10/100 Mbps link. Blinking indicates
activity.

System Status LEDs

Figure 1-5. ES3528M System Status LED

System Status LEDs

Figure 1-6. ES3552M System Status LED

1-4

Table 1-3 System Status LEDs

LED Condition Status

Features and Benefits

1

PWR
(Power)

DIAG
(Diagnostic)

On Green Internal power is operating normally.

On Amber Internal power supply has failed.

Off Power off or failure.

On Green System self-diagnostic test successfully completed.

Blinking Green System self-diagnostic test in progress.

On Amber System self-diagnostic test has failed.

Power Supply Sockets

There is one standard power socket on the rear panel of each switch for the AC
power cord.

Power Socket

Figure 1-7. ES3528M Power Supply Sockets

Power Socket

Figure 1-8. ES3552M Power Supply Sockets

Features and Benefits

Connectivity

• 24/48 10/100BASE-T ports plus 4 Gigabit combination ports (RJ-45/SFP).

• Auto-negotiation enables each RJ-45 port to automatically select the optimum
speed (10 or 100 Mbps), and the communication mode (half or full duplex) if this
feature is supported by the attached device; otherwise the port can be configured
manually.

• Independent RJ-45 10/100BASE-T ports with auto MDI/MDI-X pinout selection.

• Unshielded (UTP) cable supported on all RJ-45 ports: Category 3, 4 or 5 for
10 Mbps connections, Category 5 for 100 Mbps connections, and Category 5 or
better for 1000 Mbps connections.

1-5

1

Introduction

• IEEE 802.3-2005 Ethernet, Fast Ethernet, Gigabit Ethernet compliance ensures
compatibility with standards-based hubs, network cards and switches from any
vendor.

Expandability

• 4 Small Form Factor Pluggable (SFP) transceiver slots (shared with 1000BASE-T

ports)

• Supports 1000BASE-SX and 1000BASE-LX, 1000BASE-LH and other

SFP-compatible transceivers.

Performance

• Transparent bridging

• Switching table with a total of 8K MAC address entries

• Provides store-and-forward switching

• Supports wire-speed filtering and forwarding

• Supports flow control, using back pressure for half duplex and IEEE 802.3x for full
duplex

• Broadcast storm control

Management

• “At-a-glance” LEDs for easy troubleshooting

• Network management agent:

• Manages switch in-band or out-of-band

• Supports Telnet, SNMP/RMON and Web-based interface

1-6

Chapter 2: Network Planning

Introduction to Switching

A network switch allows simultaneous transmission of multiple packets via
non-crossbar switching. This means that it can partition a network more efficiently
than bridges or routers. The switch has, therefore, been recognized as one of the
most important building blocks for today’s networking technology.

When performance bottlenecks are caused by congestion at the network access
point (such as the network card for a high-volume file server), the device
experiencing congestion (server, power user, or hub) can be attached directly to a
switched port. And, by using full-duplex mode, the bandwidth of the dedicated
segment can be doubled to maximize throughput.

When networks are based on repeater (hub) technology, the distance between end
stations is limited by a maximum hop count. However, a switch turns the hop count
back to zero. So subdividing the network into smaller and more manageable
segments, and linking them to the larger network by means of a switch, removes this
limitation.

A switch can be easily configured in any Ethernet, Fast Ethernet, or Gigabit Ethernet
network to significantly boost bandwidth while using conventional cabling and
network cards.

2-1

2

Network Planning

Application Examples

These switches are not only designed to segment your network, but also to provide
a wide range of options in setting up network connections. Some typical applications
are described in the following pages.

Collapsed Backbone

These switches are an excellent choice for mixed Ethernet, Fast Ethernet, and
Gigabit Ethernet installations where significant growth is expected in the near future.
In a basic stand-alone configuration, it can provide direct full-duplex connections to
workstations or servers. When the time comes for further expansion, just connect to
another hub or switch using one of the Fast Ethernet ports built into the front panel
or a Gigabit Ethernet port on a plug-in SFP transceiver.

In the figure below, the switch is operating as a collapsed backbone for a small LAN.
It is providing dedicated 100 Mbps full-duplex connections to workstations and
1000 Mbps full-duplex connections to power users and servers.

2-2

Figure 2-1. Collapsed Backbone

Application Examples

2

Network Aggregation Plan

With 24 or 48 parallel bridging ports (i.e., 24 or 48 distinct collision domains), the
switch can collapse a complex network down into a single efficient bridged node,
increasing overall bandwidth and throughput.

In the figure below, the 10/100BASE-TX ports on the switch are providing 100 Mbps
connectivity through layer 2 switches. In addition, the switch is also connecting
several servers at 1000 Mbps.

Figure 2-2. Network Aggregation Plan

2-3

2

Network Planning

Remote Connection with Fiber Cable

Fiber optic technology allows for longer cabling than any other media type. A
1000BASE-SX (MMF) link can connect to a site up to 550 meters away, a
1000BASE-LX (SMF) link up to 5 km, and a 1000BASE-LH link up to 70 km. This
allows the switch to serve as a collapsed backbone, providing direct connectivity for
a widespread LAN.

A 1000BASE-SX SFP transceiver can be used for a high-speed connection between
floors in the same building, a 1000BASE-LX SFP transciever can be used to
connect to other buildings in a campus setting, and a 1000BASE-LH SFP
transceiver can be used for a long-haul connection to a remote site.

The figure below illustrates the switch connecting multiple segments with fiber cable.

Figure 2-3. Remote Connection with Fiber Cable

2-4

Application Examples

2

Making VLAN Connections

These switches support VLANs which can be used to organize any group of network
nodes into separate broadcast domains. VLANs confine broadcast traffic to the
originating group, and can eliminate broadcast storms in large networks. This
provides a more secure and cleaner network environment.

VLANs can be based on untagged port groups, or traffic can be explicitly tagged to
identify the VLAN group to which it belongs. Untagged VLANs can be used for small
networks attached to a single switch. However, tagged VLANs should be used for
larger networks, and all the VLANs assigned to the inter-switch links.

These switches also support multiple spanning trees which allow VLANs groups to
maintain a more stable path between all VLAN members. This can reduce the
overall amount of protocol traffic crossing the network, and provide a shorter
reconfiguration time if any link in the spanning tree fails.

Figure 2-4. Making VLAN Connections

Note: When connecting to a switch that does not support IEEE 802.1Q VLAN tags, use

untagged ports.

2-5

2

Network Planning

Application Notes

1. Full-duplex operation only applies to point-to-point access (such as when a

switch is attached to a workstation, server or another switch). When the switch
is connected to a hub, both devices must operate in half-duplex mode.

2. Avoid using flow control on a port connected to a hub unless it is actually

required to solve a problem. Otherwise back pressure jamming signals may
degrade overall performance for the segment attached to the hub.

3. As a general rule the length of fiber optic cable for a single switched link should

not exceed:

• 1000BASE-SX: 550 m (1805 ft) for multimode fiber.

• 1000BASE-LX: 5 km (3.2 miles) for single-mode fiber.

• 1000BASE-LH: 70 km (43 miles) for single-mode fiber.
However, power budget constraints must also be considered when calculating

the maximum cable length for your specific environment.

2-6

Chapter 3: Installing the Switch

Selecting a Site

Switch units can be mounted in a standard 19-inch equipment rack or on a flat
surface. Be sure to follow the guidelines below when choosing a location.

• The site should:

• be at the center of all the devices you want to link and near a power outlet.

• be able to maintain its temperature within 0 to 45 °C (32 to 113 °F) and its
humidity within 10% to 90%, non-condensing

• provide adequate space (approximately two inches) on all sides for proper air
flow

• be accessible for installing, cabling and maintaining the devices

• allow the status LEDs to be clearly visible

• Make sure twisted-pair cable is always routed away from power lines, fluorescent
lighting fixtures and other sources of electrical interference, such as radios and
transmitters.

• Make sure that a separate grounded power outlet that provides 100 to 240 VAC,

50 to 60 Hz, is within 2.44 m (8 feet) of each device and is powered from an
independent circuit breaker. As with any equipment, using a filter or surge
suppressor is recommended.

Ethernet Cabling

To ensure proper operation when installing the switch into a network, make sure that
the current cables are suitable for 10BASE-T, 100BASE-TX or 1000BASE-T
operation. Check the following criteria against the current installation of your
network:

• Cable type: Unshielded twisted pair (UTP) or shielded twisted pair (STP) cables
with RJ-45 connectors; Category 3 or better for 10BASE-T, Category 5 or better
for 100BASE-TX, and Category 5 or better for 1000BASE-T.

• Protection from radio frequency interference emissions

• Electrical surge suppression

• Separation of electrical wires (switch related or other) and electromagnetic fields
from data based network wiring

• Safe connections with no damaged cables, connectors or shields

3-1

3

Installing the Switch

RJ-45 Connector

Figure 3-1. RJ-45 Connections

Equipment Checklist

After unpacking the switch, check the contents to be sure you have received all the
components. Then, before beginning the installation, be sure you have all other
necessary installation equipment.

Package Contents

• ES3528M or ES3552M Fast Ethernet Switch

• Four adhesive foot pads

• Bracket Mounting Kit containing two brackets and eight screws for attaching the
brackets to the switch

• Power Cord

• RS-232 console cable

• This Installation Guide

• Management Guide CD

Optional Rack-Mounting Equipment

If you plan to rack-mount the switch, be sure to have the following equipment
available:

• Four mounting screws for each device you plan to install in a rack—these are not
included

• A screwdriver (Phillips or flathead, depending on the type of screws used)

3-2

Mounting

3

Mounting

The switch units can be mounted in a standard 19-inch equipment rack or on a
desktop or shelf. Mounting instructions for each type of site follow.

Rack Mounting

Before rack mounting the switch, pay particular attention to the following factors:

• Temperature: Since the temperature within a rack assembly may be higher than
the ambient room temperature, check that the rack-environment temperature is
within the specified operating temperature range. (See page C-2.)

• Mechanical Loading: Do not place any equipment on top of a rack-mounted unit.

• Circuit Overloading: Be sure that the supply circuit to the rack assembly is not
overloaded.

• Grounding: Rack-mounted equipment should be properly grounded. Particular
attention should be given to supply connections other than direct connections to
the mains.

To rack-mount devices:

1. Attach the brackets to the device using the screws provided in the Bracket

Mounting Kit.

Figure 3-2. Attaching the Brackets

3-3

3

2. Mount the device in the rack, using four rack-mounting screws (not provided).

3. If installing a single switch only, turn to “Connecting to a Power Source” at the

Installing the Switch

Figure 3-3. Installing the Switch in a Rack

end of this chapter.

4. If installing multiple switches, mount them in the rack, one below the other, in
any order.

Desktop or Shelf Mounting

1. Attach the four adhesive feet to the bottom of the first switch.

Figure 3-4. Attaching the Adhesive Feet

2. Set the device on a flat surface near an AC power source, making sure there
are at least two inches of space on all sides for proper air flow.

3. If installing a single switch only, go to “Connecting to a Power Source” at the
end of this chapter.

4. If installing multiple switches, attach four adhesive feet to each one. Place each
device squarely on top of the one below, in any order.

3-4

Installing an Optional SFP Transceiver

3

Installing an Optional SFP Transceiver

Figure 3-5. Inserting an SFP Transceiver into a Slot

The switch supports 1000BASE-SX and 1000BASE-LX, 1000BASE-LH and other
SFP-compatible transceivers. To install an SFP transceiver, do the following:

1. Consider network and cabling requirements to select an appropriate SFP
transceiver type.

2. Insert the transceiver with the optical connector facing outward and the slot
connector facing down. Note that SFP transceivers are keyed so they can only
be installed in one orientation.

3. Slide the SFP transceiver into the slot until it clicks into place.

Note: SFP transceivers are hot-swappable. The switch does not need to be powered off

before installing or removing a transceiver. However, always first disconnect the
network cable before removing a transceiver.

Note: SFP transceivers are not provided in the switch package.

3-5

3

Installing the Switch

Connecting to a Power Source

To connect a device to a power source:

1. Insert the power cable plug directly into the socket located at the back of the
device.

Figure 3-6. Power Sockets

2. Plug the other end of the cable into a grounded, 3-pin socket.

Note: For International use, you may need to change the AC line cord. You must

use a line cord set that has been approved for the socket type in your
country.

3. Check the front-panel LEDs as the device is powered on to be sure the Power
LED is lit. If not, check that the power cable is correctly plugged in.

4. If you have purchased a Redundant Power Unit, connect it to the switch and to
an AC power source now, following the instructions included with the package.

3-6

Connecting to the Console Port

3

Connecting to the Console Port

The DB-9 serial port on the switch’s front panel is used to connect to the switch for
out-of-band console configuration. The on-board configuration program can be
accessed from a terminal or a PC running a terminal emulation program. The pin
assignments used to connect to the serial port are described in the following figure
and table.

Figure 3-7. Serial Port (DB-9 DTE) Pin-Out

Wiring Map for Serial Cable

Table 3-1. Serial Cable Wiring

Switch’s 9-Pin

Serial Port

2 RXD (receive data) <---------------------------- 3 TXD (transmit data)

3 TXD (transmit data) -----------------------------> 2 RXD (receive data)

5 SGND (signal ground) ------------------------------ 5 SGND (signal ground)

1

6 9

Null Modem PC’s 9-Pin

5

DTE Port

No other pins are used.

The serial port’s configuration requirements are as follows:

• Default Baud rate—9,600 bps

• Character Size—8 Characters

• Parity—None

• Stop bit—One

• Data bits—8

3-7

3

Installing the Switch

3-8

Chapter 4: Making Network Connections

Connecting Network Devices

These switches are designed to interconnect multiple segments (or collision
domains). It can be connected to network cards in PCs and servers, as well as to
hubs, switches or routers. It may also be connected to devices using optional SFP
tranceivers.

Twisted-Pair Devices

Each device requires an unshielded twisted-pair (UTP) cable with RJ-45 connectors
at both ends. Use Category 5, 5e or 6 cable for 1000BASE-T connections, Category
5 or better for 100BASE-TX connections, and Category 3 or better for 10BASE-T
connections.

Cabling Guidelines

The RJ-45 ports on the switch supports automatic MDI/MDI-X pinout configuration,
so you can use standard straight-through twisted-pair cables to connect to any other
network device (PCs, servers, switches, routers, or hubs).

See Appendix B for further information on cabling.

Caution: Do not plug a phone jack connector into an RJ-45 port. This will damage the

switch. Use only twisted-pair cables with RJ-45 connectors that conform to
FCC standards.

Connecting to PCs, Servers, Hubs and Switches

1. Attach one end of a twisted-pair cable segment to the device’s RJ-45 connector.

Figure 4-1. Making Twisted-Pair Connections

4-1

4

2. If the device is a PC card and the switch is in the wiring closet, attach the other

3. As each connection is made, the Link LED (on the switch) corresponding to

Note: Avoid using flow control on a port connected to a hub unless it is actually required

Making Network Connections

end of the cable segment to a modular wall outlet that is connected to the wiring
closet. (See “Network Wiring Connections” on page 4-2.) Otherwise, attach the
other end to an available port on the switch.

Make sure each twisted pair cable does not exceed 100 meters (328 ft) in
length.

each port will light to indicate that the connection is valid.

to solve a problem. Otherwise back pressure jamming signals may degrade
overall performance for the segment attached to the hub.

Network Wiring Connections

Today, the punch-down block is an integral part of many of the newer equipment
racks. It is actually part of the patch panel. Instructions for making connections in the
wiring closet with this type of equipment follows.

1. Attach one end of a patch cable to an available port on the switch, and the other
end to the patch panel.

2. If not already in place, attach one end of a cable segment to the back of the
patch panel where the punch-down block is located, and the other end to a
modular wall outlet.

3. Label the cables to simplify future troubleshooting.

Figure 4-2. Network Wiring Connections

4-2

Fiber Optic SFP Devices

4

Fiber Optic SFP Devices

An optional Gigabit SFP transceiver (1000BASE-SX, 1000BASE-LX, or
1000BASE-LH) can be used for a backbone connection between switches, or for
connecting to a high-speed server.

Each multimode fiber optic port requires 50/125 or 62.5/125 micron multimode fiber
optic cabling with an LC connector at both ends. Each single-mode fiber port
requires 9/125 micron single-mode fiber optic cable with an LC connector at both
ends.

Warning: This switch uses lasers to transmit signals over fiber optic cable. The lasers are

compliant with the requirements of a Class 1 Laser Product and are inherently
eye safe in normal operation. However, you should never look directly at a
transmit port when it is powered on.

Warning: When selecting a fiber SFP device, considering safety, please make sure that it

can function at a temperature that is not less than the recommended maximum
operational temperature of the product. You must also use an approved Laser
Class 1 SFP transceiver.

Hinweis: Bei der Wahl eines Glasfasertransceivers muß für die Beurteilung der

Gesamtsicherheit beachtet werden, das die maximale Umgebungstemperatur
des Transceivers für den Betrieb nicht niedriger ist als die für dieses Produkts.
Der Glasfasertransceiver muß auch ein überprüftes Gerät der Laser Klasse 1
sein.

1. Remove and keep the LC port’s rubber cover. When not connected to a fiber
cable, the rubber cover should be replaced to protect the optics.

2. Check that the fiber terminators are clean. You can clean the cable plugs by
wiping them gently with a clean tissue or cotton ball moistened with a little
ethanol. Dirty fiber terminators on fiber cables will impair the quality of the light
transmitted through the cable and lead to degraded performance on the port.

3. Connect one end of the cable to the LC port on the switch and the other end to
the LC port on the other device. Since LC connectors are keyed, the cable can
be attached in only one orientation.

4-3

4

4. As a connection is made, check the Link LED on the switch corresponding to

The 1000BASE-SX, 1000BASE-LX and 1000BASE-LH fiber optic ports operate at
1 Gbps full duplex, with auto-negotiation of flow control. The maximum length for
fiber optic cable operating at Gigabit speed will depend on the fiber type as listed
under “1000 Mbps Gigabit Ethernet Collision Domain” on page 4-5.

Making Network Connections

Figure 4-3. Making Fiber Port Connections

the port to be sure that the connection is valid.

Connectivity Rules

When adding hubs (repeaters) to your network, please follow the connectivity rules
listed in the manuals for these products. However, note that because switches break
up the path for connected devices into separate collision domains, you should not
include the switch or connected cabling in your calculations for cascade length
involving other devices.

1000BASE-T Cable Requirements

All Category 5 UTP cables that are used for 100BASE-TX connections should also
work for 1000BASE-T, providing that all four wire pairs are connected. However, it is
recommended that for all critical connections, or any new cable installations,
Category 5e (enhanced Category 5) or Category 6 cable should be used. The
Category 5e specification includes test parameters that are only recommendations
for Category 5. Therefore, the first step in preparing existing Category 5 cabling for
running 1000BASE-T is a simple test of the cable installation to be sure that it
complies with the IEEE 802.3ab standards.

4-4

Connectivity Rules

1000 Mbps Gigabit Ethernet Collision Domain

Table 4-1. Maximum 1000BASE-T Gigabit Ethernet Cable Length

Cable Type Maximum Cable Length Connector

Category 5, 5e, 6 100-ohm UTP or STP 100 m (328 ft) RJ-45

Table 4-2. Maximum 1000BASE-SX Gigabit Ethernet Cable Length

Fiber Size Fiber Bandwidth Maximum Cable Length Connector

4

62.5/125 micron
multimode fiber

50/125 micron multimode
fiber

160 MHz/km 2-220 m (7-722 ft) LC

200 MHz/km 2-275 m (7-902 ft) LC

400 MHz/km 2-500 m (7-1641 ft) LC

500 MHz/km 2-550 m (7-1805 ft) LC

Table 4-3. Maximum 1000BASE-LX Gigabit Ethernet Cable Length

Fiber Size Fiber Bandwidth Maximum Cable Length Connector

9/125 micron
single-mode fiber

N/A 2 m - 5 km (7 ft - 3.2 miles) LC

Table 4-4. Maximum 1000BASE-LH Gigabit Ethernet Cable Length

Fiber Size Fiber Bandwidth Maximum Cable Length Connector

9/125 micron
single-mode fiber

N/A 2 m - 70 km (7 ft - 43.5 miles) LC

100 Mbps Fast Ethernet Collision Domain

Table 4-5. Maximum Fast Ethernet Cable Length

Type Cable Type Max. Cable Length Connector

100BASE-TX Category 5 or better 100-ohm UTP or STP 100 m (328 ft) RJ-45

10 Mbps Ethernet Collision Domain

Type Cable Type Max. Cable Length Connector

10BASE-T Twisted Pair, Categories 3, 4, 5 or better

100-ohm UTP

Table 4-6. Maximum Ethernet Cable Length

100 m (328 ft) RJ-45

4-5

4

Making Network Connections

Cable Labeling and Connection Records

When planning a network installation, it is essential to label the opposing ends of
cables and to record where each cable is connected. Doing so will enable you to
easily locate inter-connected devices, isolate faults and change your topology
without need for unnecessary time consumption.

To best manage the physical implementations of your network, follow these
guidelines:

• Clearly label the opposing ends of each cable.

• Using your building’s floor plans, draw a map of the location of all
network-connected equipment. For each piece of equipment, identify the devices
to which it is connected.

• Note the length of each cable and the maximum cable length supported by the
switch ports.

• For ease of understanding, use a location-based key when assigning prefixes to
your cable labeling.

• Use sequential numbers for cables that originate from the same equipment.

• Differentiate between racks by naming accordingly.

• Label each separate piece of equipment.

• Display a copy of your equipment map, including keys to all abbreviations at each
equipment rack.

4-6

Appendix A: Troubleshooting

Diagnosing Switch Indicators

Table A-1. Troubleshooting Chart

Symptom Action

Power LED is Off • Power supply is disconnected.

• Check connections between the switch, the power cord, and the wall
outlet.

• Contact your dealer for assistance.

Power LED is Amber • Internal power supply has failed. Contact your local dealer for assistance.

Diag LED is Amber • Power cycle the switch to try and clear the condition.

• If the condition does not clear, contact your dealer for assistance.

Link LED is Off • Verify that the switch and attached device are powered on.

• Be sure the cable is plugged into both the switch and corresponding
device.

• Verify that the proper cable type is used and its length does not exceed
specified limits.

• Check the adapter on the attached device and cable connections for
possible defects. Replace the defective adapter or cable if necessary.

Power and Cooling Problems

If the power indicator does not turn on when the power cord is plugged in, you may
have a problem with the power outlet, power cord, or internal power supply.
However, if the unit powers off after running for a while, check for loose power
connections, power losses or surges at the power outlet, and verify that the fans on
the unit are unobstructed and running prior to shutdown. If you still cannot isolate the
problem, then the internal power supply may be defective.

Installation

Verify that all system components have been properly installed. If one or more
components appear to be malfunctioning (such as the power cord or network
cabling), test them in an alternate environment where you are sure that all the other
components are functioning properly.

A-1

A

Troubleshooting

In-Band Access

You can access the management agent in the switch from anywhere within the
attached network using Telnet, a Web browser, or other network management
software tools. However, you must first configure the switch with a valid IP address,
subnet mask, and default gateway. If you have trouble establishing a link to the
management agent, check to see if you have a valid network connection. Then
verify that you entered the correct IP address. Also, be sure the port through which
you are connecting to the switch has not been disabled. If it has not been disabled,
then check the network cabling that runs between your remote location and the
switch.

Caution: The management agent can accept up to four simultaneous Telnet sessions. If

the maximum number of sessions already exists, an additional Telnet
connection will not be able to log into the system.

A-2

Appendix B: Cables

Twisted-Pair Cable and Pin Assignments

For 10/100BASE-TX connections, a twisted-pair cable must have two pairs of wires.
For 1000BASE-T connections the twisted-pair cable must have four pairs of wires.
Each wire pair is identified by two different colors. For example, one wire might be
green and the other, green with white stripes. Also, an RJ-45 connector must be
attached to both ends of the cable.

Caution: Each wire pair must be attached to the RJ-45 connectors in a specific

orientation.

Caution: DO NOT plug a phone jack connector into any RJ-45 port. This will damage the

switch. Use only twisted-pair cables with RJ-45 connectors that conform with
FCC standards.

The figure below illustrates how the pins on the RJ-45 connector are numbered. Be
sure to hold the connectors in the same orientation when attaching the wires to the
pins.

8

1

Figure B-1. RJ-45 Connector Pin Numbers

8

10BASE-T/100BASE-TX Pin Assignments

Use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for RJ-45
connections: 100-ohm Category 3 or better cable for 10 Mbps connections, or
100-ohm Category 5 or better cable for 100 Mbps connections. Also be sure
length of any twisted-pair connection does not exceed 100 meters (328 feet).

The RJ-45 ports on the switch base unit support automatic MDI/MDI-X operation, so
you can use straight-through cables for all network connections to PCs or servers, or
to other switches or hubs. In straight-through cable, pins 1, 2, 3, and 6, at one end of
the cable, are connected straight through to pins 1, 2, 3, and 6 at the other end of
the cable. When using any RJ-45 port on this switch, you can use either
straight-through or crossover cable.

that the

B-1

B

Cables

Table B-1. 10/100BASE-TX MDI and MDI-X Port Pinouts

Pin MDI Signal Name MDI-X Signal Name

1 Transmit Data plus (TD+) Receive Data plus (RD+)

2 Transmit Data minus (TD-) Receive Data minus (RD-)

3

6

4,5,7,8

Receive Data plus (RD+) Transmit Data plus (TD+)

Receive Data minus (RD-) Transmit Data minus (TD-)

Not used Not used

Note: The “+” and “-” signs represent the polarity of the wires that make
up each wire pair.

Straight-Through Wiring

If the twisted-pair cable is to join two ports and only one of the ports has an internal
crossover (MDI-X), the two pairs of wires must be straight-through. (When
auto-negotiation is enabled for any RJ-45 port on this switch, you can use either
straight-through or crossover cable to connect to any device type.)

You must connect all four wire pairs as shown in the following diagram to support
Gigabit Ethernet connections.

EIA/TIA 568B RJ-45 Wiring Standard

10/100BASE-TX Straight-through Cable

White/Orange Stripe

Orange

White/Green Stripe

Blue

White/Blue Stripe

Green

White/Brown Stripe

Brown

1
2
3
4
5
6
7
8

End B

End A

1
2
3
4
5
6
7
8

Figure B-2. Straight-through Wiring

Crossover Wiring

If the twisted-pair cable is to join two ports and either both ports are labeled with an
“X” (MDI-X) or neither port is labeled with an “X” (MDI), a crossover must be
implemented in the wiring. (When auto-negotiation is enabled for any RJ-45 port on
this switch, you can use either straight-through or crossover cable to connect to any
device type.)

You must connect all four wire pairs as shown in the following diagram to support
Gigabit Ethernet connections.

B-2

Twisted-Pair Cable and Pin Assignments

10/100BASE-TX Crossover Cable

White/Orange Stripe

Orange

B

White/Green Stripe

Blue

White/Blue Stripe

Green

White/Brown Stripe

Brown

1
2
3
4
5
6
7
8

End B

End A

1
2
3
4
5
6
7
8

Figure B-3. Crossover Wiring

1000BASE-T Pin Assignments

All 1000BASE-T ports support automatic MDI/MDI-X operation, so you can use
straight-through cables for all network connections to PCs or servers, or to other
switches or hubs.

The table below shows the 1000BASE-T MDI and MDI-X port pinouts. These ports
require that all four pairs of wires be connected. Note that for 1000BASE-T
operation, all four pairs of wires are used for both transmit and receive.

Use 100-ohm Category 5, 5e or 6 unshielded twisted-pair (UTP) or shielded
twisted-pair (STP) cable for 1000BASE-T connections. Also be sure
of any twisted-pair connection does not exceed 100 meters (328 feet)

that the length

.

Table B-2. 1000BASE-T MDI and MDI-X Port Pinouts

Pin MDI Signal Name MDI-X Signal Name

1 Bi-directional Data One Plus (BI_D1+) Bi-directional Data Two Plus (BI_D2+)

2 Bi-directional Data One Minus (BI_D1-) Bi-directional Data Two Minus (BI_D2-)

3 Bi-directional Data Two Plus (BI_D2+) Bi-directional Data One Plus (BI_D1+)

4 Bi-directional Data Three Plus (BI_D3+) Bi-directional Data Four Plus (BI_D4+)

5 Bi-directional Data Three Minus (BI_D3-) Bi-directional Data Four Minus (BI_D4-)

6 Bi-directional Data Two Minus (BI_D2-) Bi-directional Data One Minus (BI_D1-)

7 Bi-directional Data Four Plus (BI_D4+) Bi-directional Data Three Plus (BI_D3+)

8 Bi-directional Data Four Minus (BI_D4-) Bi-directional Data Three Minus (BI_D3-)

B-3

B

Cables

Cable Testing for Existing Category 5 Cable

Installed Category 5 cabling must pass tests for Attenuation, Near-End Crosstalk
(NEXT), and Far-End Crosstalk (FEXT). This cable testing information is specified in
the ANSI/TIA/EIA-TSB-67 standard. Additionally, cables must also pass test
parameters for Return Loss and Equal-Level Far-End Crosstalk (ELFEXT). These
tests are specified in the ANSI/TIA/EIA-TSB-95 Bulletin, “The Additional
Transmission Performance Guidelines for 100 Ohm 4-Pair Category 5 Cabling.”

Note that when testing your cable installation, be sure to include all patch cables
between switches and end devices.

Adjusting Existing Category 5 Cabling to Run 1000BASE-T

If your existing Category 5 installation does not meet one of the test parameters for
1000BASE-T, there are basically three measures that can be applied to try and
correct the problem:

1. Replace any Category 5 patch cables with high-performance Category 5e or
Category 6 cables.

2. Reduce the number of connectors used in the link.

3. Reconnect some of the connectors in the link.

B-4

Appendix C: Specifications

Physical Characteristics

Ports

24/48 10/100BASE-TX, with auto-negotiation
4 Combination Gigabit Ports (RJ-45/SFP)

Network Interface

Ports 1-24/48: RJ-45 connector, auto MDI/X

10BASE-T: RJ-45 (100-ohm, UTP cable; Category 3 or better)
100BASE-TX: RJ-45 (100-ohm, UTP cable; Category 5 or better)

Buffer Architecture

4 Mbits

Aggregate Bandwidth

ES3528M: 12.8 Gbps
ES3552M: 17.6 Gbps

Switching Database

8K MAC address entries

LEDs

System:

Port:

Weight

2.005 kg (4.42 lbs)

Size

4.3 x 44 x 17.1 cm (1.7 x 17.3 x 6.7 in.)

Power (Power Supply), Diag (Diagnostic)

Link/Act (Link/Activity)

C-1

C

Specifications

Temperature

Operating: 0 to 45 °C (32 to 113 °F)

Storage: -40 to 70 °C (-40 to 158 °F)

Humidity

Operating: 10% to 90% (non-condensing)

Power Supply

Internal, auto-ranging transformer: 100 to 240 V, 50-60 Hz, 0.8 A

Power Consumption

30 Watts maximum

Maximum Current

0.25 A @ 115 VAC

0.12 A @ 230 VAC

Switch Features

Forwarding Mode

Store-and-forward

Throughput

Wire speed

Flow Control

Full Duplex: IEEE 802.3x
Half Duplex: Back pressure

Management Features

In-Band Management

Telnet, HTTP or SNMP manager

Out-of-Band Management

RS-232 DB-9 console port

Software Loading

TFTP in-band, or XModem out-of-band

C-2

Standards

IEEE 802.3 Ethernet
IEEE 802.3u Fast Ethernet
IEEE 802.3z and 802.3ab Gigabit Ethernet
IEEE 802.1D (Bridging)
IEEE 802.3x full-duplex flow control
IEEE 802.1Q (Virtual LAN)
ISO/IEC 8802-3

Compliances

CE Mark

Emissions

FCC Class A
Industry Canada Class A
EN55022 (CISPR 22) Class A
EN 61000-3-2/3
VCCI Class A

Standards

C

Immunity

EN 61000-4-2/3/4/5/6/8/11

Safety

CSA/CUS (UL 60950-1, CSA 22.2 NO60950-1)
CB (IEC60950-1, EN60950-1)

C-3

C

Specifications

C-4

Appendix D: German Instructions

Eine Site auswahlen

Die Schalter konnen in ein Standard-19-Zoll-Ausrustungsgestell oder auf eine flache
Ebene montiert werden.

Zum Auswahlen eines Standortes beachten Sie bitte die nachstehenden Richtlinien.

• Die Site sollte:

- sich in der Mitte aller anzuschliesenden Gerate sowie in der Nahe einer
Netzsteckdose befinden;

- imstande sein, eine Temperatur zwischen 0 und 45 °C (32 und 113 °F) und eine
Feuchtigkeit innerhalb von 10% bis 90% (nichtkondensierend) beizubehalten;

- in einem genugend weiten Abstand (ungefahr 5 cm oder zwei Zoll) von allen
Seiten fur eine ausreichende Beluftung aufgestellt werden;

- fur das Installieren, die Kabelverlegung und fur Wartungen und Reparaturen
leicht zuganglich sein;

- die LED-Statusanzeigedioden mussen stets klar und leicht sichtbar sein.

• Sicherstellen, dass das verdrehte Kabel stets weg von anderen Stromkabeln,
Neonleuchteinrihtungen und anderen Quellen von moglichen elektrischen
Storungen verlegt wird, wie z. B. von Radios und Transmittern.

• Sicherstellen, dass das Gerat an eine separate Stromquelle mit Erdanschlus mit
einer Netzspannung von 100 bis 240 V AC (Wechselstromspannung), 50 bis 60
Hz, und innerhalb in einem Abstand von 2,44 m (8 Fus) zu jedem Gerat installiert
wird und on einem separaten Trennschalter bzw. Leistungsschalter mit Strom
versorgt wird. Fur alle Gerate wird empfohlen, einen Filter oder einen

D-1

D

German Instructions

Montage (Rack Mounting Instructions - German)

Switch-Einheiten können an ein standardmäßiges 19-Zoll Einrichtungsrack, einen
Arbeitstisch oder ein Regal montiert werden. Folgend finden Sie die

Montageanweisungen für jeden Positionstyp

Rack-Montage

Beachten Sie die folgenden Faktoren, bevor Sie die Rack-Montage beginnen:

• Temperatur: Da die Temperatur innerhalb einer Rackeinheit höher als die
Raumumgebungstemperatur sein kann, stellen Sie bitte sicher, dass die
Rackumgebungstemperatur innerhalb des angegebenen
Betriebstemperaturbereichs liegt. (Siehe "Temperatur" auf Seite C-2.)

• Mechanische Last: Stellen Sie kein Gerät auf eine Rack-Montageeinheit.

• Stromüberlastung: Stellen Sie sicher, dass der Netzkreis der Rackeinheit nicht
überlastet wird.

.

• Erdung: Die Rack-Montageeinheit muss richtig geerdet werden. Besondere Acht
sollten Sie bei Verbindungen geben, die nicht direkt zum Netz führen.

So montieren Sie Geräte an ein Rack:

1. Befestigen Sie die Metallwinkel mit den im Metallwinkel-Montageset

erhältlichen Schrauben an dem Gerät.

2. Befestigen Sie das Gerät mit vier Rackmontageschrauben (nicht beigelegt) an

dem Rack.

3. Wenn Sie nur einen Switch installieren, dann springen Sie bitte über zu

"Verbinden mit einer Stromquelle" auf Seite 3-6 am Ende dieses Kapitels.

4. Wenn Sie mehrere Switches installieren möchten, dann montieren Sie sie

untereinander in einer beliebigen Reihenfolge.

D-2

Glossary

10BASE-T

IEEE 802.3 specification for 10 Mbps Ethernet over two pairs of Category 3, 4, or 5
UTP cable.

100BASE-TX

IEEE 802.3u specification for 100 Mbps Ethernet over two pairs of Category 5 UTP
cable.

1000BASE-LH

Specification for long-haul Gigabit Ethernet over two strands of 9/125 micron core
fiber cable.

1000BASE-LX

Specification for long-haul Gigabit Ethernet over two strands of 50/125, 62.5/125 or
9/125 micron core fiber cable.

1000BASE-SX

IEEE 802.3z specification for Gigabit Ethernet over two strands of 50/125 or 62.5/125
micron core fiber cable.

1000BASE-T

IEEE 802.3ab specification for Gigabit Ethernet over 100-ohm Category 5, 5e or 6
twisted-pair cable (using all four wire pairs).

Auto-Negotiation

Signalling method allowing each node to select its optimum operational mode (e.g.,
speed and duplex mode) based on the capabilities of the node to which it is
connected.

Bandwidth

The difference between the highest and lowest frequencies available for network
signals. Also synonymous with wire speed, the actual speed of the data
transmission along the cable.

Collision

A condition in which packets transmitted over the cable interfere
Their interference makes both signals unintelligible.

Collision Domain

Single CSMA/CD LAN segment.

with each other.

Glossary-1

Glossary

CSMA/CD

CSMA/CD (Carrier Sense Multiple Access/Collision Detect) is the communication
method employed by Ethernet, Fast Ethernet, or Gigabit Ethernet.

End Station

A workstation, server, or other device that does not forward traffic.

Ethernet

A network communication system developed and standardized by DEC, Intel, and
Xerox, using baseband transmission, CSMA/CD access, logical bus topology, and
coaxial cable. The successor IEEE 802.3 standard provides for integration into the
OSI model and extends the physical layer and media with repeaters and
implementations that operate on fiber, thin coax and twisted-pair cable.

Fast Ethernet

A 100 Mbps network communication system based on Ethernet and the CSMA/CD
access method.

Gigabit Ethernet

A 1000 Mbps network communication system based on Ethernet and the CSMA/CD
access method.

Full Duplex

Transmission method that allows two network devices to transmit and receive
concurrently, effectively doubling the bandwidth of that link.

IEEE

Institute of Electrical and Electronic Engineers.

IEEE 802.3

Defines carrier sense multiple access with collision detection (CSMA/CD) access
method and physical layer specifications.

IEEE 802.3ab

Defines CSMA/CD access method and physical layer specifications for
1000BASE-T Gigabit Ethernet.

IEEE 802.3ae

Defines the access method and physical layer specifications for 10GBASE
10-Gigabit Ethernet.

IEEE 802.3u

Defines CSMA/CD access method and physical layer specifications for
100BASE-TX Fast Ethernet.

Glossary-2

Glossary

IEEE 802.3x

Defines Ethernet frame start/stop requests and timers used for flow control on
full-duplex links.

IEEE 802.3z

Defines CSMA/CD access method and physical layer specifications for 1000BASE
Gigabit Ethernet.

LAN Segment

Separate LAN or collision domain.

LED

Light emitting diode used for monitoring a device or network condition.

Local Area Network (LAN)

A group of interconnected computer and support devices.

Media Access Control (MAC)

A portion of the networking protocol that governs access to the transmission
medium, facilitating the exchange of data between network nodes.

Modal Bandwidth

Bandwidth for multimode fiber is referred to as modal bandwidth because it varies
with the modal field (or core diameter) of the fiber. Modal bandwidth is specified in
units of MHz per km, which indicates the amount of bandwidth supported by the fiber
for a one km distance.

MIB

An acronym for Management Information Base. It is a set of database objects that
contains information about the device.

Network Diameter

Wire distance between two end stations in the same collision domain.

RJ-45 Connector

A connector for twisted-pair wiring.

Switched Ports

Ports that are on separate collision domains or LAN segments.

TIA

Telecommunications Industry Association

Glossary-3

Glossary

Transmission Control Protocol/Internet Protocol (TCP/IP)

Protocol suite that includes TCP as the primary transport protocol, and IP as the
network layer protocol.

UTP

Unshielded twisted-pair cable.

Virtual LAN (VLAN)

A Virtual LAN is a collection of network nodes that share the same collision domain
regardless of their physical location or connection point in the network. A VLAN
serves as a logical workgroup with no physical barriers, allowing users to share
information and resources as though located on the same LAN.

Glossary-4

Index

Numerics

10 Mbps connectivity rules 4-5
100 Mbps connectivity rules 4-5
1000BASE-T

pin assignments B-3
ports 1-2

100BASE-TX

pin assignments B-1
ports 1-2

10BASE-T

pin assignments B-1
ports 1-2

A

adhesive feet, attaching 3-4
air flow requirements 3-1
application example 2-2

B

brackets, attaching 3-3
buffer size C-1

C

cable

Ethernet cable compatibility 3-1

labeling and connection records 4-6
cleaning fiber terminators 4-3
compliances

EMC C-3

safety C-3
connectivity rules

10 Mbps 4-5

100 Mbps 4-5
console port

pin assignments 3-7
contents of package 3-2
cooling problems A-1
cord sets, international 3-6

D

desktop mounting 3-4
device connections 4-1

E

electrical interference, avoiding 3-1
equipment checklist 3-2
Ethernet connectivity rules 4-5

F

Fast Ethernet connectivity rules 4-5
features C-2

management 1-6

switch 1-5
fiber cables 4-3
full duplex connectivity 2-1

G

grounding for racks 3-3

I

indicators, LED 1-3
installation

connecting devices to the switch 4-1

desktop or shelf mounting 3-4

port connections 4-1

power requirements 3-1

problems A-1

rack mounting 3-3

site requirements 3-1, D-1

wiring closet connections 4-2
Introduction 2-1

L

laser safety 4-3
LED indicators

Link 1-3, 1-4

Power 1-5
location requirements 3-1, D-1

M

management

agent 1-2

features 1-6, C-2, C-3

out-of-band 1-2

SNMP 1-2

Index-1

Index

Web-based 1-2

mounting the switch

in a rack 3-3
on a desktop or shelf 3-4

multimode fiber optic cables 4-3

N

network

connections 4-1
examples 2-2

O

out-of-band management 1-2

P

package contents 3-2
pin assignments B-1

console port 3-7

DB-9 3-7
ports, connecting to 4-1
power, connecting to 3-6

R

rack mounting 3-3
rear panel receptacles 1-5
RJ-45 port 1-2

connections 4-1

pinouts B-3

rubber foot pads, attaching 3-4

S

screws for rack mounting 3-2
site selelction 3-1
SNMP agent 1-2
specifications

compliances C-3
environmental C-2
physical C-1

power C-2
standards, compliance C-3
status LEDs 1-3
surge suppressor, using 3-1

T

Telnet A-2
temperature within a rack 3-3
troubleshooting

in-band access A-2

power and cooling problems A-1
twisted-pair connections 4-1

W

Web-based management 1-2

Index-2

ES3528M
ES3552M
E092006-MT-R03

149100010700H