ZyXEL ES-1124 User Manual

Dimension

ES-1124

Unmanaged 24-port Ethernet Switch with 4 Gigabit Ports

User’s Guide

April 2004

Version 1.00

Dimension ES-1124 Ethernet Switch

Copyright

Copyright © 2004 by ZyXEL Communications Corporation

The contents of this publication may not be reproduced in any part or as a whole,

transcribed, stored in a retrieval system, translated into any language, or transmitted in

any form or by any means, electronic, mechanical, magnetic, optical, chemical,

photocopying, manual, or otherwise, without the prior written permission of ZyXEL

Communications Corporation.

Published by ZyXEL Communications Corporation. All rights reserved.

Disclaimer

ZyXEL does not assume any liability arising out of the application or use of any

products, or software described herein. Neither does it convey any license under its

patent rights nor the patents rights of others. ZyXEL further reserves the right to make

changes in any products described herein without notice. This publication is subject to

change without notice.

Trademarks

Trademarks mentioned in this publication are used for identification purposes only and

may be properties of their respective owners.

ii Copyright

Dimension ES-1124 Ethernet Switch

ZyXEL Limited Warranty

ZyXEL warrants to the original end user (purchaser) that this product is free from any

defects in materials or workmanship for a period of up to two (2) years from the date of

purchase. During the warranty period and upon proof of purchase, should the product

have indications of failure due to faulty workmanship and/or materials, ZyXEL will, at

its discretion, repair or replace the defective products or components without charge for

either parts or labor and to whatever extent it shall deem necessary to restore the product

or components to proper operating condition. Any replacement will consist of a new or

re-manufactured functionally equivalent product of equal value, and will be solely at the

discretion of ZyXEL. This warranty shall not apply if the product is modified, misused,

tampered with, damaged by an act of God, or subjected to abnormal working conditions.

Note

Repair or replacement, as provided under this warranty, is the exclusive remedy of the

purchaser. This warranty is in lieu of all other warranties, express or implied, including

any implied warranty of merchantability or fitness for a particular use or purpose.

ZyXEL shall in no event be held liable for indirect or consequential damages of any kind

of character to the purchaser.

To obtain the services of this warranty, contact ZyXEL's Service Center for your Return

Material Authorization number (RMA). Products must be returned Postage Prepaid. It is

recommended that the unit be insured when shipped. Any returned products without

proof of purchase or those with an out-dated warranty will be repaired or replaced (at the

discretion of ZyXEL) and the customer will be billed for parts and labor. All repaired or

replaced products will be shipped by ZyXEL to the corresponding return address,

Postage Paid. This warranty gives you specific legal rights, and you may also have other

rights that vary from country to country.

Interference Statements and Warnings

FCC Interference Statement

This device complies with Part 15 of the FCC rules. Operation is subject to the following

two conditions:

ZyXEL Limited Warranty iii

Dimension ES-1124 Ethernet Switch

(1) This device may not cause harmful interference.

(2) This device must accept any interference received, including interference that may

cause undesired operations.

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 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.

CE Mark Warning

This is a class A product. In a domestic environment this product may cause radio

interference in which case the user may be required to take adequate measures.

Taiwanese DSMF (Bureau of Standards, Metrology and Inspection) A

Warning:

Certifications

Register your product online for free future product updates and information at

www.zyxel.com

for global

products, or at www.us.zyxel.com for North American products.
(1) Go to www.zyxel.com

(2) Select your product from the drop-down list box on the ZyXEL home page to go to

that product's page.

(3) Select the certification you wish to view from this page.

iv Interference Statements and Warnings

Dimension ES-1124 Ethernet Switch

Customer Support

If you have questions about your ZyXEL product or desire assistance, contact ZyXEL

Communications Corporation offices worldwide, in one of the following ways:

Contacting Customer Support

When you contact your customer support representative, have the following information

ready:

• Product model and serial number.

• Warranty information.

• Date you received your product.

• Brief description of the problem and the steps you took to solve it.

Location

Worldwide

Support e-mail Telephone1 Web Site Method

Sales e-mail Fax1 FTP Site

[e-mail] [phone] www.zyxel.com

www.europe.zyxel.com

ftp.zyxel.com

[e-mail] [phone] ftp.europe.zyxel.com

[e-mail] [phone]

[phone]

[e-mail] [phone] ftp.us.zyxel.com

[e-mail] [phone] www.zyxel.de Germany

[e-mail] [phone]

www.us.zyxel.com North America

Regular Mail

ZyXEL Communications

Corp.

6 Innovation Road II

Science Park

Hsinchu 300

Taiwan

ZyXEL Communications

Inc.

1130 N. Miller St.

Anaheim

CA 92806-2001

U.S.A.

ZyXEL Deutschland

GmbH. Adenauerstr.

20/A2 D-52146

Wuerselen

Germany

1

“+” is the (prefix) number you enter to make an international telephone call.

Customer Support v

Dimension ES-1124 Ethernet Switch

Support e-mail Telephone1 Web Site Method

Location

Finland [e-mail] [phone] www.zyxel.fi Z yXEL Communications

Sales e-mail Fax1 FTP Site

[phone] France [e-mail]

[phone]

[e-mail] [phone] SPAIN

[e-mail] [phone]

[e-mail] [phone] www.zyxel.dk Denmark

[e-mail] [phone]

[e-mail] [phone] www.zyxel.no Norway

[e-mail] [phone]

[e-mail] [phone] www.zyxel.se Sweden

[e-mail] [phone]

www.zyxel.fr ZyXEL France

www.zyxel.es ZyXEL Communications

Regular Mail

1 rue des Vergers

Bat. 1 / C

69760 Limonest

France

Alejandro Villegas 33

1º, 28043 Madrid

Spain

ZyXEL Communications

A/S

Columbusvej 5

2860 Soeborg

Denmark

ZyXEL Communications

A/S

Nils Hansens vei 13

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ZyXEL Communications

A/S

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Göteborg

Sweden

Oy

Malminkaari 10

00700 Helsinki

Finland

vi Customer Support

Dimension ES-1124 Ethernet Switch

Table of Contents

Copyright............................................................................................................................ii

ZyXEL Limited Warranty..................................................................................................iii

Interference Statements and Warnings...............................................................................iii

Customer Support ...............................................................................................................v

List of Figures....................................................................................................................ix

List of Tables .....................................................................................................................ix

Preface ................................................................................................................................x

Chapter 1 Getting to Know Your Switch ........................................................................ 1-1

1.1 Introduction ...................................................................................................... 1-1

1.2 Features ............................................................................................................ 1-2

1.3 Package Contents ............................................................................................. 1-2

1.4 Ethernet Switching Technology........................................................................ 1-2

1.5 Applications ..................................................................................................... 1-3

1.5.1 Standalone Workgroup.............................................................................. 1-3

1.5.2 Bridging .................................................................................................... 1-4

Chapter 2 Hardware Description and Installation ........................................................... 2-1

2.1 Desktop Installation.......................................................................................... 2-1

2.2 Rack-Mount Installation................................................................................... 2-2

2.3 Rear Panel ........................................................................................................ 2-3

2.4 Rear Panel Power Connection .......................................................................... 2-3

2.5 Front Panel ....................................................................................................... 2-3

2.5.1 10Base-T/100Base-TX RJ-45 auto-negotiating ports ............................... 2-4

2.5.2 Auto-crossover MDI/MDIX ports............................................................. 2-4

2.5.3 Gigabit uplink ports................................................................................... 2-4

2.5.4 Front Panel Connections ........................................................................... 2-5

2.5.5 Front Panel LEDs...................................................................................... 2-5

Chapter 3 Troubleshooting ............................................................................................. 3-1

3.1 Introduction ...................................................................................................... 3-1

3.1.1 PWR LED ................................................................................................. 3-1

3.1.2 FDX LED .................................................................................................. 3-1

3.1.3 LNK/ACT LED......................................................................................... 3-1

3.1.4 FDX/COL LED ......................................................................................... 3-2

3.2 Improper Network Cabling and Topology........................................................ 3-2

Product Specifications .......................................................................................................A

Index.................................................................................................................................. C

viii Table of Contents

Dimension ES-1124 Ethernet Switch

List of Figures

Figure 1-1 The ES-1124 .................................................................................................. 1-1

Figure 1-2 Standalone ES-1124 Workgroup Example .................................................... 1-4

Figure 1-3 Bridging Example ......................................................................................... 1-5

Figure 2-1 Attaching Rubber Feet................................................................................... 2-1

Figure 2-2 Attaching Mounting Brackets and Screws..................................................... 2-2

Figure 2-3 Mounting the ES to an EIA standard 19-inch rack........................................ 2-3

Figure 2-4 Rear Panel of the ES-1124 ............................................................................ 2-3

Figure 2-5 The Front Panel of the ES-1124 .................................................................... 2-4

Figure 2-6 The Front Panel LEDs of the ES-1124 .......................................................... 2-5

List of Tables

Table 2-1 Network Cable Types...................................................................................... 2-5

Table 2-2 The Front Panel LED Descriptions ................................................................. 2-5

Table 3-1 Troubleshooting Power LED .......................................................................... 3-1

Table 3-2 Troubleshooting FDX LED............................................................................. 3-1

Table 3-3 Troubleshooting LNK/ACT LED ................................................................... 3-1

Table 3-4 Troubleshooting FDX/COL LED.................................................................... 3-2

Table 3-5 Troubleshooting Improper Network Cabling and Topology ........................... 3-2

List of Figures/Tables ix

Dimension ES-1124 Ethernet Switch

Preface

Congratulations on your purchase of the Dimension ES-1124 Ethernet Switch.

About the Dimension ES-1124 Ethernet Switch

The Dimension ES-1124 switch is a cost effective Fast Ethernet multi-port switch ideal

for setting up high performance switched workgroup networks.

The ES-1124 comes with 24TX ports and four Gigabit ports: two Gigabit copper and two

mini GBIC.

General Syntax Conventions

For brevity’s sake, we will use “e.g.” as shorthand for “for instance”, and “i.e.” as

shorthand for “that is” or “in other words” throughout this manual.

The Dimension ES-1124 Ethernet Switch will be referred to as ES-1124 or the switch in

this manual.

Unless specified, images of the ES-1124 are used throughout this document.

Related Documentation

ZyXEL Web Site

The ZyXEL download library at www.zyxel.com

documentation as well as an online glossary of networking terms.

User Guide Feedback

Help us help you! E-mail all User Guide-related comments, questions or suggestions for

improvement to [e-mail] or send regular mail to The Technical

Writing Team, ZyXEL Communications Corp., 6 Innovation Road II, Science-Based

Industrial Park, Hsinchu, 300, Taiwan. Thank you!

x Preface

contains additional support

Dimension ES-1124 Ethernet Switch

Chapter 1

Getting to Know Your Switch

This chapter describes the key features, benefits and applications of your

switch.

1.1 Introduction

The ES-1124 is a multi-port switch that can be used to build high-performance switched
workgroup networks. This switch is a store-and-forward device that offers low latency
for high-speed networking. The switch is targeted at workgroup, department or
backbone computing environments for SME (small, medium enterprise) businesses.

Figure 1-1 The ES-1124

The ES-1124 features a “store-and-forward “ switching scheme. This allows the switch
to auto-learn and store source address in an 8K-entry MAC address table.

All ports are auto-crossover, that is auto-MDIX ports (Media Dependent Interface
Crossover), so you may use either a straight through Ethernet cable or crossover
Ethernet cable for all Ethernet port connections. Auto-crossover ports automatically
sense whether they need to function as crossover or straight ports, so crossover cables
can connect both computers and switches/hubs.

The ES-1124 has 24 auto-crossover 10/100Base-TX RJ-45 ports and 2 auto-detect
gigabit ports for higher connection speed.

Getting To Know Your Switch 1-1

Dimension ES-1124 Ethernet Switch

1.2 Features

• Conforms to IEEE802.3 10Base-T, IEEE802.3u 100Base-TX, IEEE802.3ab

1000Base-T, IEEE802.3z Gigabit fiber standards.

• Auto-negotiating 10/100Mbps Ethernet RJ-45 ports.

• Automatic MDI/MDIX supported.

• High switch fabric up to 8.8Gbps.

• N-way Auto-negotiation supported.

• Store-and-forwarding switching architecture for abnormal packet filtering.

• Embedded 8K MAC address table providing 8000 MAC addresses entries.

• 2.5Mbits memory buffer.

• 3.3V MINI GBIC port for Gigabit fiber transceiver.

• Two Gigabit copper ports.

• IEEE 802.1p supports two priority queues for outgoing traffic. Improves

network efficiency and performance.

• Back-Pressure-Base flow control on Half-duplex ports.

• Pause-Frame-Base flow control on Full-duplex ports.

• Supports automatic address learning.

• No-Blocking full wire speed architecture

• Fan free design

• Power, LNK/ACT and FDX/COL LEDs.

• Standard 19-inch rack-mount design.

1.3 Package Contents

Compare the contents of your ES-1124 Ethernet Switch package with the checklist
below. If any item is missing or damaged, please contact your local dealer.

• ES-1124 Ethernet switch

• Power cord

• Quickstart Guide

• This User’s Guide in CD-ROM format.

• Four rubber feet

• Rack mount brackets

1.4 Ethernet Switching Technology

Ethernet Switching Technology has dramatically boosted the total bandwidth of a
network, eliminated congestion problems inherent with CSMA/CD (Carrier Sense
multiple access with Collision Detection) protocol, and greatly reduced
unnecessary transmissions.

1-2 Getting To Know Your Switch

Dimension ES-1124 Ethernet Switch

This revolutionized networking in a number of ways:

• By allowing two-way, simultaneous transmissions over the same port (Full-

duplex), which essentially doubled the bandwidth.

• Reducing the collision domain to a single switch-port, which eliminated the

need for carrier sensing.

• Using the store-and-forward technology’s approach of inspecting each packet

to intercept corrupt or redundant data, switching eliminated unnecessary
transmission that slowed the network.

• By employing address learning, which replaced the inefficient receiving port.

Auto-negotiation regulates the speed and duplex of each port, based on the
capability of both devices. Flow-control allows transmission from a 100Mbps
node to a 10Mbps node without loss of data. Auto-negotiation and flow-control
may require disablement for some networking operations involves legacy
equipment. Disabling the auto-negotiation is accomplished by fixing the speed or
duplex of a port.

Ethernet Switching Technology supplied higher performance at costs lower than
other solutions. Wider bandwidth, no congestion, and the reduction in traffic is
why switching is replacing expensive routers and inefficient hubs as the ultimate
networking solution.

1.5 Applications

This section provides two network topology examples in which the switch is used.
By using the uplink port, the switch can connect with another switch or hub to
interconnect other workgroups to form a larger switched network. The distance between
two switches via fiber cable can be up to 550 meters (multi-mode fiber) or 10 kilometers
(single-mode fiber).

1.5.1 Standalone Workgroup

The switch can be used as a standalone switch to which, computers, servers and printer
server are directly connected to form a small workgroup.

Getting To Know Your Switch 1-3

Dimension ES-1124 Ethernet Switch

Figure 1-2 Standalone ES-1124 Workgroup Example

1.5.2 Bridging

With its large address table (8000 MAC address entries) and high performance, the
switch is an ideal solution for department networks to connect to the corporate backbone
or for connecting network segments.
The following figure depicts a typical segment bridge application of the switch in an
enterprise environment. The two workgroups, the standalone server and the two servers
can all communicate with each other and share all network resources.

1-4 Getting To Know Your Switch

Dimension ES-1124 Ethernet Switch

Figure 1-3 Bridging Example

Getting To Know Your Switch 1-5

Dimension ES-1124 Ethernet Switch

Chapter 2

Hardware Description and Installation

This section shows two switch installations, describes the hardware of the

switch and gives a functional overview of the switch.

The switch is suitable for an office environment where it can be rack mounted on

standard EIA racks or as a standalone.

For proper ventilation, allow at least 4 inches (10 cm) of clearance

at the front and 3.4 inches (8 cm) at the back of the switch. This is

especially important for enclosed rack installations.

2.1 Desktop Installation

Step 1. Make sure the switch is clean and dry.

Step 2. Set the switch on a smooth, leveled and sturdy flat space strong enough to

support the weight of the switch and the connected cables. Make sure there is

a power outlet nearby.

Step 3. Make sure there is enough clearance around the switch to allow air

circulation and the attachment of cables and the power cord.

Step 4. Remove the adhesive backing from the supplied rubber feet.

Step 5. Attach the rubber feet to each corner on the bottom of the switch. These

rubber feet help protect the switch from shock or vibration and ensure space

between devices when stacking.

Figure 2-1 Attaching Rubber Feet

Hardware Description and Installation 2-1

Dimension ES-1124 Ethernet Switch

Do not block the ventilation holes. Leave space between switches

when stacking.

2.2 Rack-Mount Installation

The switch can be mounted on an EIA standard size, 19-inch rack or in a wiring closet

with other equipment. Follow the steps below to mount your switch on a standard EIA

rack using the included rack-mounting kit.

Step 1. Align one bracket with the holes on one side of the switch and secure it with

the bracket screws that are smaller than the rack-mounting screws. Similarly,

attach the other brackets.

Figure 2-2 Attaching Mounting Brackets and Screws

Step 2. After attaching both mounting brackets, position the switch in the rack by

lining up the holes in the brackets with the appropriate holes on the rack.

Secure the switch to the rack with the rack-mounting screws.

2-2 Hardware Description and Installation

Dimension ES-1124 Ethernet Switch

Figure 2-3 Mounting the ES to an EIA standard 19-inch rack

2.3 Rear Panel

The three-pronged power receptacle is located on the rear panel of the switch. Refer to

the Product Specifications for power specification.

Figure 2-4 Rear Panel of the ES-1124

2.4 Rear Panel Power Connection

Connect one end of the supplied power cord to the power receptacle on the back of the

switch and the other end to the appropriate power source.

2.5 Front Panel

The front panel of the ES-1124 consists of 24 auto-crossover 10/100Base-TX RJ-45

ports and two auto-detecting Gigabit uplink ports, which may be a Copper Gigabit port

or a Mini Gigabit Fiber module (optional). The LEDs are also located on the front panel

of the switch.

Hardware Description and Installation 2-3

Dimension ES-1124 Ethernet Switch

Figure 2-5 The Front Panel of the ES-1124

2.5.1 10Base-T/100Base-TX RJ-45 auto-negotiating ports

Your switch comes with 24 crossover 10Base-T/100Base-TX RJ-45 ports. The auto-

negotiation feature allows the switch to detect the speed of incoming transmission and

adjust appropriately without manual intervention. It allows data transfers of either 10

Mbps or 100 Mbps in full-duplex mode.

2.5.2 Auto-crossover MDI/MDIX ports

RJ-45 Ports (Auto MDI/MDIX): 24 auto-crossover 10/100 10Base-T or 100Base-TX

connections.

All ports are auto-crossover, that is, auto-MDIX ports (Media Dependent Interface

Crossover), so you may use either a straight through Ethernet cable or crossover Ethernet

cable for all Ethernet port connections. Auto-crossover ports automatically sense

whether they need to function as crossover or straight ports, so crossover cables can

connect both computers and switches/hubs.

2.5.3 Gigabit uplink ports

Two Gigabit uplink ports: two auto detecting Giga uplink ports — UTP (unshielded

twisted pair) or Gigabit fiber.

Note that when you connect the Mini GBIC to the switch, you

must disconnect the Giga copper connection if you have

connected it to the device. Otherwise, the switch will not detect

the Mini GBIC. While you using Giga copper port or Mini GBIC

port, only one of them will work, for example, when a Giga copper

port is connected, the Mini GBIC will be disabled.

2-4 Hardware Description and Installation

Dimension ES-1124 Ethernet Switch

2.5.4 Front Panel Connections

You can use unshielded twisted pair (UTP) or shielded twisted-pair (STP) Ethernet

cables for RJ-45 ports. The following table describes the types of network cable used for

the different connection speeds.

Make sure the cable length between connections does not exceed

100 meters (328 feet).

Table 2-1 Network Cable Types

SPEED NETWORK CABLE TYPE

10 Base-T 100Ω 2-pair UTP/STP Category 3, 4 or 5

100 Base-TX 100Ω 2-pair UTP/STP Category 5

1000 BASE-T 100Ω UTP/STP Category 5

2.5.5 Front Panel LEDs

The LED Indicators give real-time information about the status of the switch. The

following table provides descriptions of the LEDs.

Figure 2-6 The Front Panel LEDs of the ES-1124

The following table describes the LEDs on the ES-1124 front panel.

Table 2-2 The Front Panel LED Descriptions

SYSTEM LED

LED COLOR STATUS DESCRIPTION

Hardware Description and Installation 2-5

Dimension ES-1124 Ethernet Switch

PWR Green On The switch is on and receiving power.

Off The switch is not receiving power.

RJ-45 Ports 1 ~ 24

LED COLOR STATUS DESCRIPTION

LNK/ACT Green On The port is connected to an Ethernet network.

Off The port is not connected to an Ethernet network.

Blinking The port is receiving or transmitting data.

Orange On The port is operating in full-duplex mode. FDX/COL

Off The port is operating in half-duplex mode.

Gigabit Uplink Ports 25 ~ 26

LED COLOR STATUS DESCRIPTION

1000

100

LNK/ACT

FDX/COL

Green On Connection speed is 1000Mbps

The link to a 1000Mbps Ethernet network is up.

Orange On Connection speed is 100Mbps

The link to a 100Mbps Ethernet network is up.

On The port is connected to an Ethernet network. Green

Off The port is not connected to an Ethernet network.

Blinking The port is receiving or transmitting data.

Orange On The port is operating in full-duplex mode.

Blinking Packet collision occurred on this port.

Off The port is operating in half-duplex mode.

2-6 Hardware Description and Installation

Dimension ES-1124 Ethernet Switch

Chapter 3

Troubleshooting

This section describes common problems you may encounter with the switch

and possible solutions.

3.1 Introduction

Troubleshoot the switch using the LEDs to detect problems.

3.1.1 PWR LED

The PWR LED on the front panel does not light up.

Table 3-1 Troubleshooting Power LED

STEP CORRECTIVE ACTION

1 Check the connections from your switch to the power source. Make sure you are using the supplied power

cord and that you are using an appropriate power source. Refer to the Product Specifications appendix.

2 Make sure the power source is turned on and that the switch is receiving sufficient power.

3 If these steps fail to correct the problem, contact your local distributor for assistance.

3.1.2 FDX LED

The FDX LED on the front panel does not light up.

Table 3-2 Troubleshooting FDX LED

STEP CORRECTIVE ACTION

1 The port is operating in half-duplex mode and not full-duplex mode.

2 Make sure the power source is turned on and that the switch is receiving sufficient power.

3 If these steps fail to correct the problem, contact your local distributor for assistance.

3.1.3 LNK/ACT LED

The LNK/ACT LED does not light up when a device is connected.

Table 3-3 Troubleshooting LNK/ACT LED

STEP CORRECTIVE ACTION

Troubleshooting 3-1

Dimension ES-1124 Ethernet Switch

1 Verify that the attached device(s) is turned on and properly connected to your switch.

2 Make sure the Network Interface Cards (NICs) are working on the attached devices.

3 Verify that proper network cable type is used and its length does not exceed 100 meters. For more information

on network cable types, see the Front Panel Connections section.

3.1.4 FDX/COL LED

The FDX/COL LED blinks.

Table 3-4 Troubleshooting FDX/COL LED

STEP CORRECTIVE ACTION

1 Some collisions in the network are normal. If the FDX/COL (Giga) LED blinks continuously, proceed to the steps

below.

2 Verify that proper network cable type is used and its length does not exceed 100 meters. For more information

on network cable types, see the Front Panel Connections section.

3 Your network is busy. Try sending large files later, reduce the number of users or segment your network.

3.2 Improper Network Cabling and Topology

Improper network cabling or topology setup is a common cause of poor network
performance or network failure.

Table 3-5 Troubleshooting Improper Network Cabling and Topology

DESCRIPTION PROBLEMS AND CORRECTIVE ACTION

Faulty cables Using faulty network cables may affect data rates and have an impact on your network

performance. Replace with new standard network cables.

Non-standard network

cables

Cabling Length If you use longer cables than are needed, transmission quality may be affected.

Too many hubs between

the computers in the

network

Non-standard cables may increase the number of network collisions and cause other network

problems that affect your network performance. Refer to the Front Panel Connections section

for more information on network cable types.

The network cables should not be longer than the limit of 100 meters.

Too many hubs (or repeaters) between the connected computers in the network may increase

the number of network collision or other network problems. Remove unnecessary hubs from

the network.

3-2 Troubleshooting

Dimension ES-1124 Ethernet Switch

Table 3-5 Troubleshooting Improper Network Cabling and Topology

DESCRIPTION PROBLEMS AND CORRECTIVE ACTION

A loop in the data path A data path loop forms when there is more than one path or route between two networked

computers. This results in broadcast storms that will severely affect your network performance.

Make sure there are no loops in your network topology.

Troubleshooting 3-3

Dimension ES-1124 Ethernet Switch

Product Specifications

This section provides the specifications of the switch.

PRODUCT SPECIFICATIONS

General

IEEE802.3 10BASE-T Ethernet (twisted-pair copper)
IEEE802.3u 100BASE-TX Fast Ethernet (twisted-pair copper)

Standards

Uplink Interface

Interface

Data Transfer Rate

Network Cables

Full/Half Duplex Full/Half duplex for 10/100Mbps speeds

Media Interface
Exchange
Performance and Management
Back plane Non-Blocking full wire speed forwarding rate 8.8Gbps
Packet Forwarding
Rate
Switching Method Store-and-forward
MAC Address Table 8K Mac with Auto Learning

IEEE802.3ab 1000BASE-T
IEEE802.3z Gigabit fiber
ANSI/IEEE802.3 Auto-negotiation
IEEE802.3x Flow Control
2 1000Base-T RJ-45 connectors
2 mini-GBIC ports (shared with 1000Base-T)
24 10/100M Ethernet Ports
Auto-crossover
Compliant with IEEE 802.3/3u
Back pressure flow control for half duplex
Flow control for full duplex (IEEE 802.3x)
Connector: RJ-45
Ethernet: 10Mbps(half duplex)
20Mbps (full duplex)
Fast Ethernet: 100Mbps (half duplex)
200Mbps(full duplex)
10BASE-T: UTP Cat.3, 4, 5 (100 m) EIA/TIA-586 100-ohm STP
(100 m)
100BASE-TX: UTP Cat.5 (100 m max.) EIA/TIA-568 100-ohm
STP (100 m max.)
1000BASE-TX: UTP Cat.5 (100 m max.) EIA/TIA-568 100-ohm
STP (100 m max.)

All ports support auto-crossover

14880PPS for 10BASE-T
148800PPS for 100BASE-TX

Product Specifications A

Dimension ES-1124 Ethernet Switch

PRODUCT SPECIFICATIONS

Data Buffer 2.5Mbits
Physical and Environmental
Weight 2Kg
LED and Switch
Per unit:
Per 10/100 Mbps
Ethernet Port:
Per GBIC Port:
Per 1000Base-T
Ethernet Port:

Layer 2 features

Connector

Dimensions

Power Supply 100 – 240VAC 50/60Hz internal universal power supply
Power Consumption 19.8W max.
Operating
Temperature
Operational Humidity 10% to 90% (Non-condensing)
EMI FCC Class A, CE
Safety UL, cUL

PWR (green): Light on or off: Power on or off

LNK/ACT, FDX/COL
LNK/ACT, FDX/COL

LNK/ACT, FDX/COL

Bridging: 8K MAC addresses
Switching: Switching fabric: 8.8Gbps
IEEE 802.1p
Frame size: 1522 bytes
Broadcast storm control
10/100TX: RJ-45
1000T: RJ-45
MINI GBIC Socket: support 3.3V DC power for MINI GBIC
transceiver
19” rack mountable enclosure
440(L) x 161(W) x 44(H) mm

0℃ ~ 45℃ (32ºF to 113ºF)

B Product Specifications

Dimension ES-1124 Ethernet Switch

Index

1

10 Mbps Ethernet............................ 2-6

A

Applications .................................... 1-3

Segment Bridge........................... 1-4

Auto-Negotiating ............................ 2-4

C

Cabling Length................................ 3-3

CE ......................................................iv

class A................................................iv

Contacting Customer Support.............v

Copyright ............................................ii

D

Data path loop ................................. 3-3

Desktop Installation ........................ 2-1

Disclaimer...........................................ii

F

Faulty cables ................................... 3-2

FCC....................................................iv

FCC Rules......................................... iii

Federal Communications Commission

(FCC) Interference Statement ....... iii

Front Panel...................................... 2-3

Front Panel Connections ................. 2-5

Front Panel LED Descriptions ........ 2-6

I

Installation

Desktop........................................ 2-1

Rack-Mount................................. 2-2

L

LED Descriptions

FDX/COL.................................... 2-6

LNK/ACT.................................... 2-6

PWR ............................................ 2-6

M

MDI/MDIX Auto-Crossover........... 2-4

N

Network Cable Length Limit........... 2-5

Network Cable Types...................... 2-5

100Mbps...................................... 2-5

10Mbps........................................ 2-5

Non-standard network cables ..........3-2

P

Package Contents.............................1-2

Product Specifications

General .......................................... A

Performance and Management ...... A

Physical and Enciromental .............B

R

G

GBIC............................................... 2-4

Index C

Rack-Mount Installation.................. 2-2

Rear Panel........................................2-3

Rear Panel Power Connection ......... 2-3

Related Documentation ................... viii

repair.................................................. iii

Dimension ES-1124 Ethernet Switch

Return Material Authorization number

.......................................................iii

RMA .................................................. iii

S

Service ...............................................iii

Standalone Workgroup ....................1-3

Syntax Conventions.........................viii

T

Trademarks .........................................ii

Troubleshooting

FDX/COL LED ...........................3-2

Improper Network Cabling and

Topology ................................. 3-2

LNK/ACT LED........................... 3-2

Power LED.................................. 3-1

V

ventilation........................................ 2-1

Z

ZyXEL Limited Warranty................. iii

Note............................................... iii

ZyXEL Web Site............................. viii

D Index