Smc FS26 Installation Manual

INSTALLATION GUIDE

ta

SMCFS26

EZ SwitchTM 10/100
24-Port Fast Ethernet Switch with 2
Gigabit uplinks

EZ Switch 10/100
Installation Guide

From SMC’s EZ line of low-cost workgroup LAN solutions

20 Mason
Irvine, CA 92618
Phone: [phone]

Pub. # 150200062500A

May 2007

E052007-AP-R01

Information furnished by SMC Networks, Inc. (SMC) is believed to be accurate and
reliable. However, no responsibility is assumed by SMC for its use, nor for any
infringements of patents or other rights of third parties which may result from its use. No
license is granted by implication or otherwise under any patent or patent rights of SMC.
SMC reserves the right to change specifications at any time without notice.

Copyright © 2007 by

SMC Networks, Inc.

20 Mason

Irvine, CA 92618

All rights reserved. Printed in Taiwan

Trademarks:
SMC is a registered trademark; and EZ Switch, TigerStack and TigerSwitch are

trademarks of SMC Networks, Inc. Other product and company names are trademarks or
registered trademarks of their respective holders.

Limited Warranty

Limited Warranty Statement: SMC Networks, Inc. (“SMC”) warrants its products to be
free from defects in workmanship and materials, under normal use and service, for the
applicable warranty term. All SMC products carry a standard 90-day limited warranty from
the date of purchase from SMC or its Authorized Reseller. SMC may, at its own discretion,
repair or replace any product not operating as warranted with a similar or functionally
equivalent product, during the applicable warranty term. SMC will endeavor to repair or
replace any product returned under warranty within 30 days of receipt of the product.

The standard limited warranty can be upgraded to a Limited Lifetime* warranty by
registering new products within 30 days of purchase from SMC or its Authorized Reseller.
Registration can be accomplished via the enclosed product registration card or online via
the SMC Web site. Failure to register will not affect the standard limited warranty. The
Limited Lifetime warranty covers a product during the Life of that Product, which is
defined as the period of time during which the product is an “Active” SMC product. A
product is considered to be “Active” while it is listed on the current SMC price list. As new
technologies emerge, older technologies become obsolete and SMC will, at its discretion,
replace an older product in its product line with one that incorporates these newer
technologies. At that point, the obsolete product is discontinued and is no longer an
“Active” SMC product. A list of discontinued products with their respective dates of
discontinuance can be found at:
http://www.smc.com/index.cfm?action=customer_service_warranty.

All products that are replaced become the property of SMC. Replacement products may
be either new or reconditioned. Any replaced or repaired product carries either a 30-day
limited warranty or the remainder of the initial warranty, whichever is longer. SMC is not
responsible for any custom software or firmware, configuration information, or memory
data of Customer contained in, stored on, or integrated with any products returned to
SMC pursuant to any warranty. Products returned to SMC should have any
customer-installed accessory or add-on components, such as expansion modules,
removed prior to returning the product for replacement. SMC is not responsible for these
items if they are returned with the product.

Customers must contact SMC for a Return Material Authorization number prior to
returning any product to SMC. Proof of purchase may be required. Any product returned
to SMC without a valid Return Material Authorization (RMA) number clearly marked on
the outside of the package will be returned to customer at customer’s expense. For
warranty claims within North America, please call our toll-free customer support number
at [phone]. Customers are responsible for all shipping charges from their facility to
SMC. SMC is responsible for return shipping charges from SMC to customer.

WARRANTIES EXCLUSIVE: IF AN SMC PRODUCT DOES NOT OPERATE AS
WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY SHALL BE REPAIR OR
REPLACEMENT OF THE PRODUCT IN QUESTION, AT SMC’S OPTION. THE
FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF
ALL OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN
FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING
WARRANTIES OR CONDITIONS OF MERCHANTABILITY AND FITNESS FOR A
PAR TICULAR PURPOSE. SMC NEITHER ASSUMES NOR AUTHORIZES ANY OTHER
PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE
SALE, INSTALLATION, MAINTENANCE OR USE OF ITS PRODUCTS. SMC SHALL

i

NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION
DISCLOSE THE ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS
CAUSED BY CUSTOMER’S OR ANY THIRD PERSON’S MISUSE, NEGLECT,
IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR,
OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY
ACCIDENT, FIRE, LIGHTNING, OR OTHER HAZARD.

LIMITATION OF LIABILITY: IN NO EVENT, WHETHER BASED IN CONTRACT OR
TORT (INCLUDING NEGLIGENCE), SHALL SMC BE LIABLE FOR INCIDENTAL,
CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR
FOR LOSS OF REVENUE, LOSS OF BUSINESS, OR OTHER FINANCIAL LOSS
ARISING OUT OF OR IN CONNECTION WITH THE SALE, INSTALLATION,
MAINTENANCE, USE, PERFORMANCE, FAILURE, OR INTERRUPTION OF ITS
PRODUCTS, EVEN IF SMC OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED
OF THE POSSIBILITY OF SUCH DAMAGES.

SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES OR
THE LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
CONSUMER PRODUCTS, SO THE ABOVE LIMITATIONS AND EXCLUSIONS MAY
NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS,
WHICH MAY VARY FROM STATE TO STATE. NOTHING IN THIS WARRANTY SHALL
BE TAKEN TO AFFECT YOUR STATUTORY RIGHTS.

* SMC will provide warranty service for one year following discontinuance from the active
SMC price list. Under the limited lifetime warranty, internal and external power supplies,
fans, and cables are covered by a standard one-year warranty from date of purchase.

SMC Networks, Inc.

20 Mason

Irvine, CA 92618

ii

EMI Certification

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 interf erence when the equipment is
operated in a commercial environment. This equipment gene rates, uses, and can
radiate radio frequency energy and, if not installed and us ed 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.

iii

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:

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

LVD: • EN 60950-1

• 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

• 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 accord ing 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)

Warning! Do not plug a phone jack connector in the RJ-45 port. This may damage
the device. Les raccordeurs ne sont pas utilisé pour le système téléphonique!

Australia AS/NZS 3548 (1995) - Class A

N11846

iv

Safety Compliance

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

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-groundin g 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, Sta ndard DK2-1a or DK2-

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

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

5a.

fuse which complies with BS1362.
The mains cord must be <HAR> or <BASEC> marked and be of type

HO3VVF3GO.75 (minimum).

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

IEC-320 receptacle.

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 entré e 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 q u’en débranchant son cordon
électrique au niveau de cette prise.

v

• L’appareil fonctionne à une tension extrêmement basse de sécuri té 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.

France et Pérou uniquement:

Ce groupe ne peut pas être alimenté par un dispositif à impédance à la t erre. Si vo s
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 do it resp ecte r la n orme SEV/A SE 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 spécifications minimales pour un cable flexible sont AWG No. 18,
ou AWG No. 16 pour un cable de longueur inférieure à 2 métres.

- 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 branchemen t doit être du type à mise à la terre

(mise à la masse) et respecter la conf iguration 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.

vi

• 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.

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

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

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

en.

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 fi eld ground

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

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

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

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

standards.

Warnings (in German)

Achtung: Dieses Produkt enthält keine Teile, die eine Wartung vom Benutzer

benötigen.

Achtung: Installation und Deinstallation des Gerätes müssen von qualifiziertem

Servicepersonal durchgeführt werden.

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

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

vii

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 switches, including their physical and
performance-related characteristics, and how to install each switch.

Audience

This guide is for system administrators with a working knowledge of network
management. You should be familiar with switching and networking concepts.

Zielgruppe Dieser Anleitung ist fuer Systemadministratoren mit Erfahrung im
Netzwerkmangement. Sie sollten mit Switch- und Netzwerkkonzepten vertraut sein.

viii

Contents

Introduction 1

Features and Benefits 1
Front and Rear Panels 1
Rear Panel 1
Front Panel RJ-45 Ports 1
1000BASE-T Ports 2
LED Status Indicators 2

Installing the Switch 3

Package Contents 3
Selecting a Site 3
Instructions 3
Applications 4
Rack Mounting 5

Product Specifications 7

Physical Characteristics 7
Switching Criteria 7

Troubleshooting 8

Diagnosing Switch Indicators 8
Power and Cooling Problems 8
Installation 8

Cables 9

Twisted-Pair cable and Pin Assignments 9

10BASE-T/100BASE-TX Pin Assignments 9
Straight-Through Wiring 10
Crossover Wiring 10
1000BASE-T Pin Assignments 11

ix

Contents

x

Introduction

The SMC EZ Switch 10/100, SMCFS26, is a high-performance Fast Ethernet swit ch
designed for delivering 100 Mbps connectivity to the desktop. It provides 24 full­duplex 100BASE-TX ports and two 1000BASE-T uplink ports that significantly
improve network performance and boost throughput for high-bandwidth app lications.
With 8.8Gbps of aggregate bandwidth, the switch provides a simple solution to
meeting the growing demands on your network's limited resources.

Features and Benefits

• Auto-negotiation supported on all ports

• Automatic MDI/MDI-X operation

• IEEE Std 802.3-2005 compliance ensures compatibility with standards-based

hubs, switches and cards from any vendor

• Store-and-forward switching ensures error-free transmission

• Half- and full-duplex flow control prevents packets from bei ng dropped under

heavy loading

• Plug-and-play nothing to configure

• “At-a-glance” LEDs for port and system status monitoring

• Desktop or rack installation

Front and Rear Panels

1357911 13 15 17 19 21 23

2 4 6 8 10 12 14 16 18 20 22 24

25 26

100-240V~50-60Hz0.75A

Rear Panel

The AC power socket is located on the rear panel of the switch.

Front Panel RJ-45 Ports

This switch features 24 10/100BASE-TX ports with RJ-4 5 connectors locate d on the
front panel of the switch. Becaus e all ports support automatic MDI/MDI -X operat i on,
you can use straight-through cables for all network connections t o PCs or servers, or
to other switches or hubs.

1

Introduction

1000BASE-T Ports

The two 1000BASE-T RJ-45 ports operate at 10 Mbps or 100 Mbps, half or full
duplex, or at 1000 Mbps, full duplex. Because these ports 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.

LED Status Indicators

The front panel of the switch provides status LEDs for “at-a-glance” system
monitoring. The following table details the functions of the various indicators.

Port and System Status LEDs

LED Condition Status

Power On The switch is receiving power.

Off The switch is not receiving power.
Ports 1-24
Link/Act On The port has established a valid network

Off The port has not established a network

Flashing Traffic is passing through the port.
10/100/1000 On Green Indicates the port is operating at 100 Mbps.

Off When the corresponding Link/Act LED is on,

Amber Indicates the port is operating at 1000 Mbps (port

connection.
connection.

indicates the port is operating at 10 Mbps.
25,26)

2

Installing the Switch

Before installing the switch, verify that you have all the items listed under “Package
Contents.” If any of the items are mi ssing or damage d, co ntact your local distributor.
Also be sure you have all the necessary tools and cabling before installing the
switch.

Package Contents

This package includes:

• EZ Switch 10/100, SMCFS26

• Four rubber foot pads

• This Installation Guide

• Two mounting brackets and four screws

• Appropriate AC power cord

Selecting a Site

Be sure to follow the site selection guidelines below when choo sing a location:

• Select a suitable location for the switch:

• It should be accessible for installing, cabling and maintaining the switch.

• The temperature and humidity should be within the ranges listed in the
specifications.

• The status LEDs should be clearly visible.

• There should be adequate space (approximately two inches) on all sides for
proper air flow.

• Make sure twisted-pair cable is always routed away f rom po we r l ines, fl uore scent
lighting fixtures and other sources of electrical interference such as radios,
transmitters, etc.

• Make sure that a properly grounded power outlet is within 2 m (6.6 feet) of the
switch and is powered from an independent circuit breaker. As with any equipment,
using a filter or surge suppressor is recommended.

Instructions

1. Positioning the Switch: For desktop or shelf mounting, attach the four

adhesive foot pads to the bottom of the switch. For mounting the switch in a
rack, see “Rack Mounting” on page 5.

2. Applying Power: Plug one end of the power cord into the socket on the

switch's rear panel, and the other end into an appropriate electrical outlet.
Check the Power LED to be sure power is on.

Note: It is not necessary to power off the switch before connecting or disconnecting any

UTP cables, as these actions will not disrupt the operation of other devices
attached to the switch.

3

Installing the Switch

3. Connecting PCs: Connect each PC to an RJ-45 port on the switch using
Category 5, 5e, or 6 shielded or unshielded twisted-pair (UTP or STP) cable,
maximum length 100 meters (328 ft). The switch will support up to 26 PCs.

Note: If an attached device does not support auto-negotiation, the data rate will be

sensed automatically and the communication mode will default to half duplex. All
ports on the switch 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.

4. Cascading Switches and Other Network Devices: All the ports on the switch
support automatic MDI/MDI-X configuration for cable connections. This allows
you to use straight-through cable to connect to other switch es or hubs from an y
port on the switch. No crossover cables or other device settings are needed.
See the “Twisted-Pair cable and Pin Assignments” on page 9 of this gui de for
further information.

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

switch. Instead, use only twisted-pair cables with RJ-45 connectors that
conform with FCC standards.

Applications

This switch segments your network, significantly increasing both bandwidth and
throughput. Each port on the switch can be attached to any Ethernet or Fast
Ethernet device, such as another switch, or a server’s network adapter. All switch
ports operate at 10 /100 Mbps full and half duplex providing up to 200 Mbps of
bandwidth to the attached device. The two Gigabit uplink ports operate at 1000
Mbps full duplex and provide up to 2 Gbps of bandwidth to each attached device.

Bridging Functions – This switch provides fully transparent bridging functions.
It automatically learns node addresses, that are subsequentl y used to filter and
forward all traffic based on the destination address . When traffic passes between
devices attached to the same shared collision domain, those packets are filtered
from the switch. But when traffic must be passed between unique segments
(i.e., different ports on the switch), the high-speed switching fabric forwards the
packets at near zero latency.

Switching Functions – Store-and-forward switching is used to forward traffic to
other ports. This scheme ensures data integri ty and provides a clean data stream.

Sample Application – This switch is designed to operate as a small workgroup
switch. It can provide 10 or 100 Mbps connections t o workstations or servers. It can
also provide a 1000 Mbps uplink to the network backbone.

4

100 Mbps

100 Mbps

Installing the Switch

1357911 13 15 17 19 21 23

2 4 6 8 10 12 14 16 18 20 22 24 25 26

10 Mbps

1000 Mbps

10 Mbps Workstations

100 Mbps Workstation

100 Mbps Workstation

1000 Mbps
Server

Standalone LAN

1357911 13 15 17 19 21 23

100 Mbps
Servers

2 4 6 8 10 12 14 16 18 20 22 24

100 Mbps Workstation

25 26

100 Mbps Workstations

100 Mbps
Server

100 Mbps

Workstation

1357911 13 15 17 19 21 23

2 4 6 8 10 12 14 16 18 20 22 24

10 Mbps
Segment

100 Mbps
Segment

25 26

Cascading Switches

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 “Product Specificati ons” on
page 7.)

• 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.

5

Installing the Switch

• Grounding: Rack-mounted equipment should be properly groun ded. 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 provid ed in the Bracket

Mounting Kit.

5

26

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

19 21 23

20 22 24

25

26

3. If installing multiple switches, mount them in the rack, one below the other, in

any order.

6

Product Specifications

Physical Characteristics

Standards Conformance IEEE Std 802.3-2005
Communication Rate Ports 1-24: 10 and 100 Mbps

Ports 25-26: 10, 100, and 1000 Mbps
Communication Mode Full or half duplex
Media Supported 10BASE-T: 100-ohm Category 3 or better twisted-pair

100BASE-TX: 100-ohm Category 5 or better twisted pair

1000BASE-T: 100-ohm Category 5, 5e, or 6 twisted-pair
Number of Ports 24 RJ-45 100BASE-TX ports

2 RJ-45 1000BASE-T ports
Indicator Panel Power

Ports: Link/Act, 10/100/1000 Mbps
Dimensions 44 x 17.2 x 4.3 cm (17.3 x 6.8 x 1.7 in.)
Weight 1.895 kg (4.177 lbs)
Power Requirement Input Voltage: 100 - 240 VAC @ 50-60 Hz, 0.75 A
Power Consumption 30 Watts maximum
Temperature Operating: 0 ~ 45 ºC / 32 ~ 113 ºF

Storage: -40 ~ 70 ºC / -40 ~ 158 ºF
Humidity 10% to 90% non-condensing
Immunity EN 61000-4-2/3/4/5/6/8/11
Emissions FCC Class A, CISPR Class A, EN 61000-3-2/3
Safety IEC 60950-1

Switching Criteria

Network Bridging Function Filtering, forwarding and learning
Switching Method Store-and-forward
MAC Address Table 4K entries
Packet buffer 2.75 Mbit per system

7

Troubleshooting

Diagnosing Switch Indicators

Troubleshooting Chart

Symptom Action

Power LED is Off • Check connections between the switch, the power cord and the wall

outlet.

• Check the power out let by using it for another device.

• Contact your dealer for assistance.

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

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

• If the switch is inst alled in a rack, check the connections to the punch­down block and patch panel.

• Verify that the p roper cable type is used and its length doe s not exceed
specified limits.

• Check the adapter on the attached device and cable connections for
possible defects. Replace the defective adapter or cab le if nec essary .

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 po wer supply as
explained in the previous section. 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 prob lem, the n the int ernal power supply may
be defective.

Installation

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

8

Cables

Twisted-Pair cable and Pin Assignments

For 10/100BASE-TX connections, the 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: DO NOT plug a phone jack connector into any RJ-45 port. Use only twisted-

pair cables with RJ-45 connectors that conform with FCC standards.

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

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.

orientation.

8

1

RJ-45 Connector Pin Numbers

8

1

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 100­ohm 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).

Since the RJ-45 ports on the switch base unit 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. In straigh t-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 ei ther
straight-through or crossover cable.

that the

9

Cables

10/100BASE-TX MDI and MDI-X Port Pinouts

Pin MDI Signal Name MDI-X Signal Name

1 Receive Data plus (RD+) Transmit Data plus (TD+)
2 Receive Data minus (RD-) Transmit Data minus (TD-)

3
6
4, 5, 7, 8

Transmit Data plus (TD+) Receive Data plus (RD+)
Transmit Data minus (TD-) Receive Data minus (RD-)
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 auto­negotiation is enabled for any RJ-45 port on this switch, you can use either straight­through 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.

EIA/TIA 568B RJ-45 Wiring Standard

10/100BASE-TX Straight-through Cable

White/Orange Stripe

Orange

End A

1
2
3
4
5
6
7
8

White/Green Stripe

Blue

White/Blue Stripe

Green

White/Brown Stripe

Brown

Straight-through Wiring

1
2
3
4
5
6
7
8

End B

Crossover Wiring

If the twisted-pair cable is to join two por ts 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-throug h o r crossover ca ble t o conne ct to any
device type.)

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

10

Cables

EIA/TIA 568B RJ-45 Wiring Standard

10/100BASE-TX Crossover Cable

White/Orange Stripe

Orange

End A

1
2
3
4
5
6
7
8

White/Green Stripe

Blue

White/Blue Stripe

Green

White/Brown Stripe

Brown

1
2
3
4
5
6
7
8

End B

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 t wist ed­pair (STP) cable for 1000BASE-T connections. Also be sure
twisted-pair connection does not exceed 100 meters (328 feet)

that the length of any

.

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-d irectional 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-)

11

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 spec ified 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.

12

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