Smc SMC6912M, SMC6924M Installation Guide

TigerSwitch 10/100

Stackable Fast Ethernet Switch

◆ 12/24 10BASE-T/100BASE-TX ports

◆ Optional 100BASE-FX or 1000BASE-SX modules

◆ Optional stack module for linking up to four units

◆ 8.8 Gbps of aggregate switch bandwidth

◆ Support for redundant power unit

◆ Up to five port trunks per switch

◆ Port mirroring for non-intrusive analysis

◆ QoS support for two-level priority

◆ Full support for VLANs with GVRP

◆ IP Multicasting with IGMP Snooping

◆ Manageable via console, Web, SNMP/RMON

Installation Guide

SMC6912M
SMC6924M

TigerSwitch 10/100
Installation Guide

From SMC’s Tiger line of feature-rich workgroup LAN solutions

6 Hughes
Irvine, CA 92618
Phone: [phone]

February 2001

Pub. # F2.42 150070-102 R05

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 © 2001 by

SMC Networks, Inc.

6 Hughes

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.

L

IMITED WARRANTY

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/smc/pages_html/support.html.

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 customers 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

L

IMITED WARRANTY

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
PARTICULAR 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 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.

6 Hughes

Irvine, CA 92618

C

OMPLIANCES

FCC - Class A

This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause interference to
radio communications. It has been tested and found to comply with the limits for a
Class A computing device pursuant to Subpart B of Part 15 of FCC Rules, which are
designed to provide reasonable protection against such interference when operated in a
commercial environment. Operation of this equipment in a residential area is likely to
cause interference, in which case the user, at his own expense, will be required to take
whatever measures may be required to correct the interference. 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) cable for RJ-45 connections
greater for 10 Mbps connections and Category 5 for 100 Mbps connections. Use 50/125
or 62.5/125 micron multimode fiber optic cable for SC or ST-type connections.

War ni ngs

1. Wear an anti-static wrist strap or take other suitable measures to prevent
electrostatic discharge when handling this equipment.

2. When connecting this hub 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.

—

Category 3 or

EC Conformance Declaration - Class A

SMC contact for these products in Europe is:

SMC Networks Europe,
Edificio Conata II,
Calle Fructuós Gelabert 6-8, 2
08970 - Sant Joan Despí,
Barcelona, Spain.

This information technology equipment complies with the requirements of the Low
Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC, and carries the CE
Mark accordingly. It conforms to the following specifications:

EMC: EN55022 (1988)/CISPR-22 (1995) Class A

IEC 1000-4-2 4 kV CD, 8 kV AD
IEC 1000-4-3 (1995) 3 V/m
IEC 1000-4-4 (1995) 1.0 kV - (power line)

IEC 1000-4-6 (1995) 3 Vrms

o

, 4a,

0.5 kV - (signal line)

i

C

OMPLIANCES

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

Taiwan BSMI Class A

Australia AS/NZS 3548 (1995) - Class A

SMC contact for products in Australia is:

SMC Communications Pty. Ltd.
Suite 18, 12 Tryon Road,
Lindfield NSW2070,
Phone: [phone]
Fax: [phone]

ii

C

OMPLIANCES

Safety Compliance

Warning: Fiber Optic Port Safety

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

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

Underwriters Laboratories Compliance Statement

Important!

Check it (read the label on the cable) against the following:

Operating Voltage Cord Set Specifications

120 Volts UL Listed/CSA Certified Cord Set

240 Volts (Europe only) Cord Set with H05VV-F cord having three

Before making connections, make sure you have the correct cord set.

Minimum 18 AWG
Type SVT or SJT three conductor cord
Maximum length of 15 feet
Parallel blade, grounding type attachment plug

rated 15A, 125V

conductors with minimum diameter of 0.75 mm
IEC-320 receptacle
Male plug rated 10A, 250V

2

The unit automatically matches the connected input voltage. Therefore, no additional
adjustments are necessary when connecting it to any input voltage within the range
marked on the rear panel.

iii

C

OMPLIANCES

Wichtige Sicherheitshinweise (Germany)

1. Bitte lesen Sie diese Hinweise sorgfältig durch.

2. Heben Sie diese Anleitung für den späteren Gebrauch auf.

3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie keine
Flüssigoder Aerosolreiniger. Am besten eignet sich ein angefeuchtetes Tuch zur
Reinigung.

4. Die Netzanschlu ßsteckdose soll nahe dem Gerät angebracht und leicht zugänglich
sein.

5. Das Gerät ist vor Feuchtigkeit zu schützen.

6. Bei der Aufstellung des Gerätes ist auf sicheren Stand zu achten. Ein Kippen oder
Fallen könnte Beschädigungen hervorrufen.

7. Die Belüftungsöffnungen dienen der Luftzirkulation, die das Gerät vor Überhitzung
schützt. Sorgen Sie dafür, daß diese Öffnungen nicht abgedeckt werden.

8. Beachten Sie beim Anschluß an das Stromnetz die Anschlußwerte.

9. Verlegen Sie die Netzanschlußleitung so, daß niemand darüber fallen kann. Es sollte
auch nichts auf der Leitung abgestellt werden.

10. Alle Hinweise und Warnungen, die sich am Gerät befinden, sind zu beachten.

11. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es vom
Stromnetz trennen. Somit wird im Falle einer Überspannung eine Beschädigung
vermieden.

12. Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das
Gerät gelangen. Dies könnte einen Brand bzw. elektrischen Schlag auslösen.

13. Öffnen sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen
Sicherheit nur von authorisiertem Servicepersonal geöffnet werden.

14. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen und
von einer qualifizierten Servicestelle zu überprüfen:

a. Netzkabel oder Netzstecker sind beschädigt.
b. Flüssigkeit ist in das Gerät eingedrungen.
c. Das Gerät war Feuchtigkeit ausgesetzt.
d. Wenn das Gerät nicht der Bedienungsanleitung entsprechend funktioniert oder

Sie mit Hilfe dieser Anleitung keine Verbesserung erzielen.
e. Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt.
f. Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.

15. Zum Netzanschluß dieses Gerätes ist eine geprüfte Leitung zu verwenden. Für einen
Nennstrom bis 6A und einem Gerätegewicht größer 3kg ist eine Leitung nicht
leichter als H05VV-F, 3G, 0.75mm

Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635 Teil 1000 beträgt 70dB(A)
oder weniger.

2

einzusetzen.

iv

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ABLE OF

C

ONTENTS

1 About the TigerSwitch 10/100 . . . . . . . . . . . . . . 1-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Switch Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Management Options . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Description of Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

10BASE-T/100BASE-TX Ports (SMC6912M/SMC6924M) . . 1-3

Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Network Management Module . . . . . . . . . . . . . . . . . . . 1-5

Spanning Tree Protocol . . . . . . . . . . . . . . . . . . . . . 1-6

VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Multicast Switching . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Traffic Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Optional Media Extender Modules . . . . . . . . . . . . . . . . 1-7

Optional 100BASE-FX Module (SMC6900FSC) . . . . . 1-7

Optional 1000BASE-SX Module (SMC6900G) . . . . . . 1-8

Optional Stack Module (SMC6900S) . . . . . . . . . . . . 1-8

Optional Redundant Power Unit (SMCRPU150W) . . . . . 1-8

Power Supply Receptacles . . . . . . . . . . . . . . . . . . . . . . 1-9

Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Expandability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

2 Network Planning . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Introduction to Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Sample Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Collapsed Backbone . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Central Wiring Closet . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Remote Connections with Fiber Cable . . . . . . . . . . . . . . 2-4

Making VLAN Connections . . . . . . . . . . . . . . . . . . . . . . 2-5

Connectivity Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

1000 Mbps Gigabit Ethernet Collision Domain . . . . . . . . 2-6

Maximum 1000BASE-SX Fiber Optic Cable Distance 2-6

100 Mbps Fast Ethernet Collision Domain . . . . . . . . . . . 2-7

SMC 3-2 Rule for Class II Repeaters . . . . . . . . . . . . . 2-7

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ABLE OF CONTENTS

SMC 2-1 Rule for Class I Repeaters . . . . . . . . . . . . 2-7

Maximum Network Diameter Using Repeaters . . . . 2-7

Maximum Fast Ethernet Cable Distance . . . . . . . . . 2-7

10 Mbps Ethernet Collision Domain . . . . . . . . . . . . . . . 2-8

SMC 5-4-3 Rule . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Maximum Ethernet Cable Distance . . . . . . . . . . . . 2-8

Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

3 Installing the Switch . . . . . . . . . . . . . . . . . . . . . .3-1

Selecting a Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . 3-5

Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Connecting to a Power Source . . . . . . . . . . . . . . . . . . . . . . . 3-7

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 . . . . . . 4-3

Wiring Closet Connections . . . . . . . . . . . . . . . . . . . . . . 4-4

Fiber Optic Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

A Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

Diagnosing Switch Indicators . . . . . . . . . . . . . . . . . . . . . . . . A-1

Power and Cooling Problems . . . . . . . . . . . . . . . . . . . . . . . . A-2

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

In-Band Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

B Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Twisted-Pair Cable and Pin Assignments . . . . . . . . . . . . . . . . B-2

100BASE-TX/10BASE-T Pin Assignments . . . . . . . . . . . . B-3

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ABLE OF CONTENTS

Straight-Through Wiring . . . . . . . . . . . . . . . . . . . . .B-3

Crossover Wiring . . . . . . . . . . . . . . . . . . . . . . . . . .B-4

Console Port Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . .B-5

DB-9 Port Pin Assignments . . . . . . . . . . . . . . . . . . . . . .B-6

Console Port to 9-Pin COM Port on PC . . . . . . . . . . . . .B-6

Console Port to 25-Pin DCE Port on Modem . . . . . . . . .B-6

Console Port to 25-Pin DTE Port on PC . . . . . . . . . . . . .B-7

C Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

Physical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1

Switch Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-3

Management Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-4

Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-5

Compliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-5

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-5

Slide-in Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-6

100BASE-FX Extender Module . . . . . . . . . . . . . . . . . . .C-6

1000BASE-SX Extender Module . . . . . . . . . . . . . . . . . . .C-6

Stack Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-7

D Ordering Information . . . . . . . . . . . . . . . . . . . . . D-1

Glossary

Index

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ABLE OF CONTENTS

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HAPTER

A

BOUT THE

T

IGERSWITCH

10/100

Overview

SMC’s TigerSwitch™ 10/100 is a stackable switch with 12 or 24
10BASE-T/100BASE-TX ports, plus two slots for optional slide-in
100BASE-FX or 1000BASE-SX modules. One of these slots can also
be used for an optional stacking module that allows you attach up
to four switches to a 4.8 Gbps high-speed backplane. There is also
an SNMP-based Network Management Module installed in the rear
panel. This module supports both in-band and out-of-band access
for managing the switch and the attached stack. (One module only
must be installed in one switch to manage the stack.)

SMC6912M – 12-Port Switch

1

SMC6924M

Figure 1-1. Front Panels

–

24-Port Switch

1-1

A

BOUT THE TIGERSWITCH

Rear Panel (Both Models)

Figure 1-2. Rear Panel

100BASE-FX Fiber Module

1000BASE-SX Gigabit Module Stack Module

Figure 1-3. Optional Modules

10/100

Switch Architecture

The TigerSwitch employs a high-speed switching fabric. This design
allows for simultaneous transport of multiple packets at low latency
on all ports. It also uses store-and-forward switching to ensure
maximum data integrity. In this mode, the entire packet must be
received into a port buffer and checked for validity before being
forwarded. This prevents errors from being propagated throughout
the network. This switch also features full-duplex capability on all
ports, which effectively doubles the bandwidth of each connection.

This TigerSwitch can be used in a standalone configuration, or can
be stacked up to four high to form a single logical switch with up to
104 ports. When stacked, the 4.8 Gbps stack backplane provides
enough bandwidth for the most demanding environment. Moreover,
you can use a 100 Mbps fiber module for connecting to a remote
site, or a Gigabit module for a high-speed backbone connection.

1-2

A

BOUT THE TIGERSWITCH

10/100

Management Options

This switch contains a comprehensive array of LEDs for
“at-a-glance” monitoring of network and port status. It also
includes a Network Management Module that allows the entire
stack to be managed in-band via SNMP or RMON (Groups 1, 2, 3
and 9) protocols, with a Web browser, or remotely via Telnet. The
switch also provides a serial port on the rear panel for out-of-band
management.

Note: Only one Network Management Module must be installed

in the stack for the current firmware release.

Description of Hardware

10BASE-T/100BASE-TX Ports (SMC6912M/SMC6924M)

These ports are dual-speed RJ-45 ports with built-in wiring
crossovers (MDI-X). Workstations and servers can be connected to
these ports with straight-through cable. When connecting to
another switch or a hub, you can use straight-through cable to
connect to a port on the attached device that does not have
built-in wiring crossovers (MDI), or use crossover cabling. (See
Appendix B for a pinout description of crossover cable.)

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 IEEE 802.3x auto-negotiation of flow
control, so the switch can automatically prevent port buffers from
becoming saturated.

1-3

A

BOUT THE TIGERSWITCH

10/100

Status LEDs

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

Figure 1-4. Port and System LEDs

Port and System Status LEDs

LED Condition Status

Power On Switch is receiving power.

1-4

RDP On Redundant power is on, and the RPU is in

backup or active mode.

Off Redundant power is off or has failed.

Mgmt On Agent is operational.

RJ-45 Ports

Link On Port has established a valid network

connection.

Green Valid 10 Mbps connection.

Yellow Valid 100 Mbps connection.

Flashing Port has been partitioned due to an

abnormal network condition, or manually
disabled.

Act* On Traffic is passing through the port.

FDX* On Port is operating at full duplex.

Off Port is operating at half duplex.

FC* On Flow control enabled.

* Use the Mode Select button to select the LED display mode.

Port and System Status LEDs

LED Condition Status

Module Ports

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10/100

Status

Activity On Traffic is passing through the module.

On A module is installed in this slot.

Network Management Module

Figure 1-5. Network Management Module

This switch includes a Network Management Module on the rear
panel. This module can manage the switch and the attached stack.
It offers a variety of management options, including SNMP, RMON
and a Web-based interface. This module also includes an RS-232
port for out-of-band management. This is an RS-232 serial port
with a DB-9 connector. A PC may be connected to this port for
configuration and monitoring purposes out-of band via a full­handshaking null modem cable. You can also make a remote
connection to this port via modems. This allows you to access the
out-of-band interface. (See Appendix B for a description of wiring
options.)

The Network Management Module provides a wide range of
advanced performance-enhancing features. Multicast filtering
provides support for real-time network applications. Port-based
and tagged VLANs, plus support for automatic GVRP VLAN
registration provide traffic security and efficient use of network
bandwidth. QoS priority queueing ensures the minimum delay for
moving real-time multimedia data across the network. Flow control

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eliminates the loss of packets due to bottlenecks caused by port
saturation. And broadcast storm control prevents broadcast traffic
storms from engulfing the network.

Some of this switch’s advanced features are described below. For a
detailed description, refer to the Management Guide.

Spanning Tree Protocol

The TigerSwitch 10/100 supports IEEE 802.1D Spanning Tree
Protocol. This protocol adds a level of fault tolerance by allowing
two or more redundant connections to be created between a pair
of LAN segments. When there are multiple physical paths between
segments, this protocol will choose a single path and disable all
others to ensure that only one route exists between any two
stations on the network. This prevents the creation of network
loops. However, if the chosen path should fail for any reason, an
alternate path will be activated to maintain the connection.

The default setting for the Spanning Tree Protocol is “enabled.”
This protocol may be configured out-of-band via the serial console
port, or in-band via the Web interface, Telnet, or SNMP network
management software.

10/100

VLANs

The TigerSwitch 10/100 supports up to 256 VLANs. 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. By segmenting your network into VLANs, you can:

• Eliminate broadcast storms which severely degrade
performance in a flat network.

• Simplify network management for node changes/moves by
remotely configuring VLAN membership for any port, rather
than having to manually change the node’s IP address.

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• Provides data security by restricting all traffic to the originating
VLAN, except where a connection has been configured
between separate VLANs using a router or Layer 3 switch.

Multicast Switching

Specific multicast traffic can be assigned to its own VLAN to ensure
that it does not interfere with normal network traffic and to
guarantee real-time delivery by setting the required priority level
for the designated VLAN. The switch uses IGMP Snooping and
IGMP to manage multicast group registration.

Traffic Priority

This switch provides Quality of Service (QoS) by prioritizing each
packet based on the required level of service, using two distinct
categories with Weighted Fair Queuing. It uses IEEE 802.1p and

802.1Q tags to prioritize incoming traffic based on input from the

end-station application. These functions can be used to provide
independent priorities for delay-sensitive data and best-effort data.

Optional Media Extender Modules

10/100

Optional 100BASE-FX Module (SMC6900FSC)

Figure 1-6. 2-Port 100BASE-FX Fiber Module

Using fiber optic cable, the 100BASE-FX port can be connected to
a remote site up to 2 km (1.24 mi.) away. This port operates only
at 100 Mbps, full duplex. This module is fitted with an SC
connector, but you can attach an ST plug to the switch using the
optional SC-ST Converter (Part Number: 99-012034-091).

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Optional 1000BASE-SX Module (SMC6900G)

Figure 1-7. Single-Port 1000BASE-SX Gigabit Module

Using fiber optic cable, the 1000BASE-SX port can be connected to
a remote site up to 550 m (1805 ft.) away. The 1000BASE-SX
Gigabit module operates at 1 Gbps, with support for
auto-negotiation of duplex mode and flow control. This module is
fitted with an SC connector, but you can attach an ST plug to the
switch using the SC-ST Converter (Part Number: 99-012034-091).

Optional Stack Module (SMC6900S)

Figure 1-8. Stack Module

10/100

The uplink and downlink stack ports operate at 2 Gbps. These
modules can be used to connect up to four switches to the
backplane. A stack cable is included with each module.

Optional Redundant Power Unit (SMCRPU150W)

SMC provides an optional Redundant Power Unit (RPU),
SMCRPU150W, that can supply power to the switch in the event of
failure of the internal power supply.

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Power Supply Receptacles

There are two power receptacles on the rear panel of the switch.
The standard power receptacle is for the AC power cord. The
receptacle labeled “DC Input” is for the optional Redundant Power
Unit (RPU).

Figure 1-9. Power Supply Receptacles

10/100

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10/100

Features and Benefits

Connectivity

◆ 12 or 24 dual-speed ports for easy Fast Ethernet integration and
for protection of your investment in legacy LAN equipment

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

◆ Independent RJ-45 10BASE-T/100BASE-TX ports with built-in
wiring crossovers for straight-through cable connections

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

◆ IEEE 802.3 Ethernet and 802.3u Fast Ethernet compliance
ensures compatibility with standards-based hubs, network
cards and switches from any vendor

Expandability

◆ Optional 100BASE-FX fiber module (SC connector) which can
connect to a remote site up to 2 kilometers away (at full
duplex)

◆ Optional 1000BASE-SX Gigabit module that can run up to 550
meters (using 50/125 micron, 500 MHz/km fiber cable), and
operates at 1 Gbps, half or full duplex, with auto-negotiation
for duplex mode and flow control

◆ Optional Stack modules that can connect up to four switches
(100 ports) to the stack’s 4.8 Gbps backplane

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Performance

◆ Transparent bridging

◆ Aggregate bandwidth up to 8.8 Gbps

◆ Switching Table with 12K MAC address entries

◆ Provides Store-and-Forward switching

◆ Filtering and forwarding at line speed

◆ Broadcast storm control

◆ Includes support for an optional Redundant Power Unit

◆ Desktop or rack-mountable

◆ Limited lifetime warranty

Management

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

◆ Network Management Module:

10/100

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

• One module manages the entire stack in-band or out-of-band

• Spanning Tree Protocol for redundant network connections

• VLAN support for 256 groups, port-based or with 802.1Q

VLAN tagging, and GVRP for automatic VLAN learning

• Quality of Service (QoS) supports two levels of priority and
Weighted Fair Queueing

• Multicast Switching based on IGMP (Internet Group
Management Protocol) Snooping and Multicast Filtering

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• Port trunking increases the bandwidth of a network
connection and ensures fault recovery

• Port security prevents intruders from gaining access to the
network

10/100

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LANNING

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
maximum distance between end stations is limited. For Ethernet,
there may be up to four hubs between any pair of stations; for Fast
Ethernet, the maximum is two. This is known as the 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.

2

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

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ETWORK PLANNING

Sample Applications

The TigerSwitch 10/100 is 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
below.

Collapsed Backbone

The TigerSwitch 10/100 is an excellent choice for mixed Ethernet
and Fast Ethernet installations where significant growth is
expected in the near future. You can easily build on this basic
configuration, adding direct full-duplex connections to
workstations or servers. When the time comes for further
expansion, just cascade the TigerSwitch to an Ethernet or Fast
Ethernet hub or switch, add another TigerSwitch to the stack, or
link to another workgroup using a Gigabit connection.

In the figure below, the TigerSwitch 10/100 is operating as a
collapsed backbone for a small LAN. It is providing dedicated 20
Mbps full-duplex connections to workstations and 200 Mbps
full-duplex connections to power users and servers.

Figure 2-1. Collapsed Backbone

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Central Wiring Closet

With up to 100 ports in a stack (i.e., 100 distinct segments), the
TigerSwitch 10/100 can collapse a complex network down into a
single efficient bridged node, increasing overall bandwidth and
throughput.

In the figure below, the 10BASE-T/100BASE-TX ports on the
TigerSwitch stack are providing 100 Mbps connectivity for up to
100 segments through SMC’s TigerStack™ II 10/100 hubs. In
addition, the switch is also connecting servers at 200 Mbps.

Figure 2-2. Central Wiring Closet

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Remote Connections with Fiber Cable

Fiber optic technology allows for longer cabling than any other
media type (up to 2 kilometers for 100 Mbps fiber at full duplex, or
up to 550 meters for 1 Gbps fiber). The TigerSwitch can serve as a
collapsed backbone, providing direct connectivity for a
widespread LAN. The 100 Mbps fiber modules (with two ports per
module) can be used to interconnect remote Fast Ethernet
segments. While the Gigabit module can be used for a high-speed
connection between floors in the same building, or to connect to
other buildings in a campus setting. The figure below illustrates a
TigerSwitch connecting multiple segments with fiber cable.

Figure 2-3. Collapsed Backbone Using Fiber Cable

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Making VLAN Connections

VLANs can be based on port groups, or each data frame can be
explicitly tagged to identify the VLAN group it belongs to. When
using port-based VLANs, ports can either be assigned to any
number of groups. Port-based VLANs are suitable for small
networks. A single switch can be easily configured to support
several VLAN groups for various organizational entities (such as
Finance and Marketing).

When you expand port-based VLANs across several switches, you
need to make a separate connection for each VLAN group. This
approach is, however, inconsistent with the Spanning Tree
Protocol, which can easily segregate ports that belong to the same
VLAN. When VLANs cross separate switches, it is therefore better
to use VLAN tagging. This allows you to assign multiple VLAN
groups to the “trunk” ports (that is, tagged ports) connecting
different switches.

Figure 2-4. Making VLAN Connections

Note: When connecting to a switch that does not support IEEE

802.1Q VLAN tags, use untagged ports.

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Connectivity Rules

When adding hubs (repeaters) to your network, please follow the
connectivity rules listed below for Ethernet, Fast Ethernet, or
Gigabit Ethernet. 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.

1000 Mbps Gigabit Ethernet Collision Domain

Maximum 1000BASE-SX Fiber Optic Cable Distance

Fiber Size Fiber Bandwidth Maximum Cable Length

62.5/125 micron 160 MHz/km 7-722 ft. (2-220 m)

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

50/125 micron 400 MHz/km 7-1641 ft. (2-500 m)

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

Note: Although maximum cable length for 100BASE-FX fiber

depends on the duplex mode, the maximum length for
1000BASE-SX fiber is the same for both half and full
duplex.

2-6

100 Mbps Fast Ethernet Collision Domain

SMC 3-2 Rule for Class II Repeaters

Between any two PCs or other stations in the same 100BASE-TX
collision domain, there may be:

• up to 3 link segments and

• up to 2 Class II repeaters (hubs)

SMC 2-1 Rule for Class I Repeaters

Between any two PCs or other stations in the same 100BASE-TX
collision domain, there may be:

• up to 2 link segments and

• up to 1 Class I repeater (hub)

Maximum Network Diameter Using Repeaters

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ETWORK PLANNING

Repeater Type

and Number

1 Class I 200 m (656 ft.)

1 Class II 200 m (656 ft.)

2 Class II 205 m (672.4 ft.)

Twisted Pair
100BASE-TX

Maximum Fast Ethernet Cable Distance

Cable Type Connecting Max. Distance

Twisted Pair Any two devices 100 m (328 ft.)

Fiber Switch to switch, server or PC

Half duplex 412 m (1,351.4 ft.)

Full duplex 2 km (1.24 mi.)

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ETWORK PLANNING

10 Mbps Ethernet Collision Domain

SMC 5-4-3 Rule

Between any two PCs or other stations in the same 10 Mbps collision
domain, there may be:

• up to 5 link segments in series,

• up to 4 repeaters (hubs),

• up to 3 populated cable segments, that is, segments attached to

two or more PCs (coax networks only).*

* The remaining two segments are unpopulated; these are known as
inter-repeater links or IRLs. This distinction between populated and
unpopulated segments is significant for coax networks only.

Maximum Ethernet Cable Distance

Cable Type Maximum Length

Twisted Pair, Categories 3, 4, 5 100 m (328 ft.)

Thin Coax 185 m (607 ft.)

External Transceiver Drop 50 m (165 ft.)

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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. When a switch is connected to a hub or any kind of shared
media, remember to turn off back pressure to prevent the
attached port from being frequently partitioned due to the
jamming packets.

3. For network applications that require routing (such as when
interconnecting dissimilar network types or distinct VLANs),
you may have to attach the TigerSwitch 10/100 units directly to
a router or Layer 3 switch (such as the SMC6724ML3).

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S

Selecting a Site

TigerSwitch 10/100 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 50° C and
its humidity within 5% to 95%, non-condensing

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

• be accessible for installing, cabling and maintaining the
devices

3

WITCH

• 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, transmitters, etc.

◆ Make sure that a separate grounded power outlet that provides
100 to 240 VAC, 50 to 60 Hz, is within 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.

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Equipment Checklist

After unpacking the TigerSwitch 10/100, 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

◆ TigerSwitch 10/100 unit, SMC6912M or SMC6924M

◆ Four adhesive foot pads

◆ Bracket Mounting Kit containing two brackets and four screws

for attaching the brackets to the switch

◆ Power Cord—either US, Continental Europe or UK

◆ RS-232 console cable

◆ This Installation Guide

◆ SMC Warranty Registration Card—be sure to complete and

return to SMC

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)

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NSTALLING THE SWITCH

Mounting

A TigerSwitch 10/100 unit can be mounted in a standard 19-inch
equipment rack or on a desktop or shelf. Mounting instructions for
each type of site follow.

Before mounting the devices, be sure to install any optional
modules, as follows.

Installing Optional Modules: Before mounting the switch, be
sure you install any optional modules. If you have purchased an
optional slide-in 100BASE-FX or 1000BASE-SX media expansion
module, or Stack Modules, install these modules now, following
the instructions included with the package.

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.

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NSTALLING THE SWITCH

To rack-mount devices:

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

Figure 3-1. Attaching the Brackets

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

Figure 3-2. Installing the Switch in a Rack

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NSTALLING THE SWITCH

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

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

5. If also installing RPUs, mount them in the rack below the other
devices.

Desktop or Shelf Mounting

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

Figure 3-3. 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.

5. If also installing RPUs, place them close to the stack.

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Stacking

A stack may have as many as four switches.

Note: A stacking cable is included with the Stack Module.

Caution: DO NOT stack TigerSwitch 10/100 units with other

devices. Doing so may damage the switch.

To stack the devices:

1. Locate the stack connectors labeled “UP” and “DOWN” on the
stack modules (see Figure 3-4).

2. Attach one end of the stacking cable to the stack connector
labeled “DOWN” on the top device, and the other end to the
connector labeled “UP” on the next lower device.

3. Repeat this step until all the devices have been connected.

4. Turn to the next section, “Connecting to a Power Source.”

Figure 3-4. Stacking the Switches

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NSTALLING THE SWITCH

Connecting to a Power Source

To connect a device to a power source:

Note: It is recommended that the switches be stacked before

being connected to a power source. However, a device can
be added to the top or bottom of a stack that is on and
operating without first powering down the stack. Be sure to
stack the new device before connecting it to a power
source. All switches in a stack must be powered on to allow
traffic to pass across the stack’s backplane.

To connect each device to a power source:

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

Figure 3-5. Power Receptacle

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 receptacle 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. The Mgmt LED on the uppermost switch
will be lit.

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NSTALLING THE SWITCH

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

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Connecting Network Devices

The TigerSwitch 10/100 is designed to interconnect multiple
segments (or collision domains). It may be connected to 10 or 100
Mbps network cards in PCs and servers, as well as to Ethernet and
Fast Ethernet hubs, switches or routers. It may also be connected
to remote devices using the optional 100BASE-FX or 1000BASE-SX
modules.

Note: Before connecting cables, you may want to first configure

the Spanning Tree Protocol to avoid network loops. Refer
to the Management Guide for more information.

4

Twisted-Pair Devices

Each device requires an unshielded twisted-pair (UTP) cable with
RJ-45 connectors at both ends. For 100BASE-TX connections,
Category 5 cable is required; for 10BASE-T, Category 3, 4 or 5
cable can be used.

Cabling Guidelines

Every twisted-pair connection must have a wiring crossover to
transmit and receive data. For convenience, this crossover is built
into all RJ-45 ports on the switch—these are fixed crossover ports

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AKING NETWORK CONNECTIONS

(MDI-X). Since network cards do not cross their internal wiring to
make a connection, PCs can be connected to these ports with
straight-through cable.

10BASE-T/100BASE-TX hubs and switches, on the other hand, may
have either crossover (MDI-X) or straight-through (MDI) ports. For
this reason, the type of cable used to connect these devices to the
TigerSwitch is determined by the port on the other device, as
shown in the table below. (See Appendix B for further

information on cabling.)

Crossover/Straight-Through Wiring Requirement

If the port on the
switch is...

Crossover (x) Crossover Crossover

Crossover (x) Straight-through Straight-through

Straight-through (=) Crossover Straight-through

Straight-through (=) Straight-through Crossover

And the port on the
other device is...

Then use...cable

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.

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AKING NETWORK CONNECTIONS

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. Figure 4-1. Making Twisted-Pair Connections

2. If the device is a network card and the TigerSwitch is in the
wiring closet, attach the other end of the cable segment to a
modular wall outlet that is connected to the wiring closet (see
“Wiring Closet Connections” on the next page). Otherwise,
attach the other end to an available port on the switch.

If the device is a hub or switch, use the cable type indicated
under “Cabling Guidelines” on page 4-1, and attach the other
end to a port on the TigerSwitch.

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

Note: When connected to a shared collision domain (such as a

hub with multiple workstations), switch ports must be
set to half-duplex mode and back pressure flow control
disabled.

3. As each connection is made, the green Link LED (on the
TigerSwitch) corresponding to each port will light to indicate
that the connection is valid.

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Wiring Closet 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. Wiring Closet Connections

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Fiber Optic Devices

An optional slide-in 100BASE-FX module may be used for
backbone and long distance connections. A 1000BASE-SX module
may also be used for a backbone connection between switches, or
for connecting to a high-speed server.

Each fiber optic port requires 50/125 or 62.5/125 micron
multimode fiber optic cabling with an SC connector at both ends.
If you need to connect to a device with 62.5/125 micron cable that
has ST-type connectors, SMC provides an optional SC-ST Converter
(Part Number: 99-012034-091).

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.

1. Remove and keep the SC 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 optic 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 SC port on the switch and
the other end to the SC port on the other device. Since SC
connectors are keyed, the cable can be attached in only one
orientation.

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AKING NETWORK CONNECTIONS

Figure 4-3. Making SC Port Connections

4. As a connection is made, check the Activity LED on the
switch’s front panel for the corresponding module to be sure
that the connection is valid.

Note: If you use the optional SC-ST Converter, be sure to connect

the converter’s Tx (Rx) port to the Rx (Tx) port on the other
device.

The 100BASE-FX fiber optic ports operate only at 100 Mbps, full
duplex. You can run a fiber link up to 1.24 miles (2 kilometers).
However, note that power budget constraints must also be
considered when calculating the maximum cable length for your
specific environment.

The 1000BASE-SX 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 2-6.

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PPENDIX

T

ROUBLESHOOTING

A

Diagnosing Switch Indicators

Troubleshooting Chart

Symptom Action

Power LED is Off • Internal or redundant power supply has failed or

is disconnected.

• Check connections between the switch, the
power cord, the wall outlet, and the RPU if you
are using one.

• If the switch is installed in a rack, check the
connections to the punch-down block and patch
panel.

• Contact SMC Technical Support.

Power LED is Flashing • The switch is either downloading firmware or

running the Power-On Self-Diagnostics Test
(POST). If this LED does not stop flashing, then
POST has failed, and you should contact SMC
Technical Support.

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.

A-1

T

ROUBLESHOOTING

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. In this case, contact SMC Technical
Support for assistance.

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.

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 such as
EliteView. 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.

A-2

T

ROUBLESHOOTING

Note: You can configure the management agent to accept from

one 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-3

T

ROUBLESHOOTING

A-4

Specifications

10BASE-T Twisted-Pair Cable

Cable Type Category Connector

100-ohm UTP, 22 - 26 AWG

0.4 - 0.6 mm, 2 pairs

100BASE-TX Twisted-Pair Cable

Cable Type Category Connector

100-ohm UTP, 22 - 26 AWG

0.4 - 0.6 mm, 2 pairs

100BASE-FX and 1000BASE-SX Duplex Fiber Cable

Cable Type Connector

62.5/125 or 50/125 micron core SC

A

PPENDIX

C

ABLES

3, 4, 5 male, 8-pin RJ-45

5 male, 8-pin RJ-45

B

Note: If you need to connect to a device with 62.5/125 micron

cable that has ST-type connectors, SMC provides an
optional SC-ST Converter (Part Number: 99-012034-091).

B-1

C

ABLES

Twisted-Pair Cable and Pin Assignments

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.

For 100BASE-TX/10BASE-T connections, a twisted-pair cable must
have two pairs of wires. Each wire pair is identified by two
different colors. For example, one wire might be red and the other,
red 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. (See “Cabling Guidelines” on
page 4-1 for an explanation.)

Figure B-1 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.

Figure B-1. RJ-45 Connector Pin Numbers

B-2

100BASE-TX/10BASE-T Pin Assignments

With 100BASE-TX/10BASE-T cable, pins 1 and 2 are used for
transmitting data, and pins 3 and 6 for receiving data.

RJ-45 Pin Assignments

Pin Number

1Tx+

2Tx-

3Rx+

6Rx-

1: The “+” and “-” signs represent the polarity of

the wires that make up each wire pair.

Assignment

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.

Straight-Through RJ-45 Pin Assignments

End 1 End 2

1 (Tx+) 1 (Tx+)

2 (Tx-) 2 (Tx-)

3 (Rx+) 3 (Rx+)

6 (Rx-) 6 (Rx-)

1

C

ABLES

B-3

C

ABLES

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.

Crossover RJ-45 Pin Assignments

End 1 End 2

1 (Tx+) 3 (Rx+)

2 (Tx-) 6 (Rx-)

3 (Rx+) 1 (Tx+)

6 (Rx-) 2 (Tx-)

B-4

Console Port Pin Assignments

The DB-9 serial port on the switch’s rear panel is used to connect
to the switch for out-of-band console configuration. The on-board
menu-driven configuration program can be accessed from a
terminal, a PC running a terminal emulation program, or from a
remote location via a modem connection. The pin assignments
used to connect to the serial port are provided in the following
tables.

Figure B-2. DB-9 Console Port Pin Numbers

C

ABLES

B-5

C

ABLES

DB-9 Port Pin Assignments

EIA

Circuit

CF 109 DCD (Data Carrier Detected) 1 1 8 <-----­BB 104 RxD (Received Data) 2 2 3 <-----­BA 103 TxD (Transmitted Data) 3 3 2 ------>
CD 108.2 DTR (Data Terminal Ready) 4 4 20 ------>
AB 102 SG (Signal Ground) 5 5 7 ------­CC 107 DSR (Data Set Ready) 6 6 6 <-----­CA 105 RTS (Request-to-Send) 7 7 4 ------>
CB 106 CTS (Clear-to-Send) 8 8 5 <-----­CE 125 RI (Ring Indicator) 9 9 22 <------

CCITT
Signal

Description Switch’s

DB9 DTE

Pin #

PC DB9

DTE

Pin #

Modem

DB25

DCE Pin #

Signal

Direction

DTE-DCE

Console Port to 9-Pin COM Port on PC

Switch’s 9-Pin

Serial Port

CCITT Signal PC’s 9-Pin

COM Port

1 DCD ----------- DCD ------------ 1
2 RXD <--------- TXD ------------ 3
3 TXD ----------- RXD ----------> 2
4 DTR ----------- DSR ----------> 6
5 SGND ----------- SGND ---------- 5
6 DSR ----------- DTR ------------ 4
7 RTS ----------- CTS -----------> 8
8 CTS <--------- RTS ------------- 7
9 RI ----------- RI --------------- 9

Console Port to 25-Pin DCE Port on Modem

Switch’s 9-Pin

Serial Port

1 <--------- DCD ------------ 8
2 <--------- RXD ------------ 3
3 ----------- TXD ----------> 2
4 ----------- DTR ----------> 20
5 ----------- SGND ---------- 7
6 <--------- DSR ------------ 6
7 ----------- RTS -----------> 4
8 <--------- CTS ------------- 5
9 <--------- RI --------------- 22

CCITT Signal Modem’s 25-Pin

DCE Port

B-6

Console Port to 25-Pin DTE Port on PC

Switch’s 9-Pin

Serial Port

1 DCD 8 DCD
2 RXD 3 TXD
3 TXD 2 RXD
4 DTR 20 DTR
5 SGND 7 SGND
6 DSR 6 DSR
7 RTS 4 RTS
8 CTS 5 CTS
9 RI 22 RI

Null Modem PC’s 25-Pin

11
23
32
48
520
67
74
95
20 6

DTE Port

C

ABLES

B-7

C

ABLES

B-8

A

PPENDIX

S

PECIFICATIONS

Physical Characteristics

Ports

12/24 10BASE-T/100BASE-TX, with auto-negotiation
1 slot for an optional dual-port 100BASE-FX or single-port

1000BASE-SX media expansion module

1 slot for a media expansion module or stacking module

Network Interface

10BASE-T: RJ-45 (100-ohm, UTP cable; Categories 3, 4, 5)
100BASE-TX: RJ-45 (100-ohm, UTP cable; Category 5)

Ports 1-24: RJ-45 connectors, fixed crossover

100BASE-FX: SC connector

Multimode fiber cable; 62.5/125 or 50/125 microns

1000BASE-SX: SC connector

Multimode fiber cable; 62.5/125 or 50/125 microns

C

Stack Interface

Connects up to 4 units

2 Gbps, full duplex, uplink/downlink ports

4.8 Gbps backplane bandwidth (for stack)

Buffer Architecture

128 Kbytes per 10/100 Mbps ports
2 Mbytes per 1000 Mbps ports

Aggregate Bandwidth

SMC6912M: 6.4 Gbps
SMC6924M: 8.8 Gbps

C-1

S

PECIFICATIONS

Switching Database

12K MAC address entries

LEDs

System: Power, RDP, Mgmt
Port: Mode (flow control, full duplex, activity),
Link (speed, link, disable/partition)

Weight

SMC6912M: 10.34 lbs (4.69 kg)
SMC6924M: 10.63 lbs (4.82 kg)

Size

17.37 x 11.22 x 2.53 in (44.0 x 28.5 x 6.4 cm)

Temperature

Operating: 32 to 122
Storage: -40 to 158°F (-40 to 70°C)

Humidity

Operating: 5% to 95%

AC Input

100 to 240 V, 50 to 60 Hz

°F (0 to 50°C)

Power Supply

Internal, auto-ranging transformer: 100 to 240 VAC, 50 to 60 Hz
Redundant DC input

Power Consumption

80 Watts maximum

Heat Dissipation

273 BTU/hr maximum

Maximum Current

SMC6912M: 0.58A @ 110VAC, 0.37A @ 240VAC
SMC6924M: 0.80A @ 110VAC, 0.50A @ 240VAC

C-2

Switch Features

Spanning Tree Protocol

Forwarding Mode

Store-and-forward

Throughput

Wire speed

Flow Control

Full Duplex: IEEE 802.3x
Half Duplex: Back pressure

Broadcast Storm Control

Configurable threshold on a per-port basis.

VLAN Support

Up to 256 groups; port-based or with 802.1Q VLAN tagging,
GVRP for automatic VLAN learning

Multicast Switching

IGMP Snooping

S

PECIFICATIONS

Quality of Service

Supports two levels of priority and Weighted Fair Queueing

C-3

S

PECIFICATIONS

Management Features

In-Band Management

Telnet, Web-based HTTP, or SNMP manager
(EliteView Network Management software provided for free)

Out-of-Band Management

RS-232 DB-9 console port

Software Loading

TFTP or Web (HTTP) in-band or XModem out-of-band

MIB Support

MIB II (RFC 1213), Bridge MIB (RFC 1493), Ethernet-Like MIB
(RFC 1643), RMON MIB (RFC 1757), SMC’s private MIB

RMON Support

Groups 1, 2, 3, 9 (Statistics, History, Alarm, Event)

Additional Features

Port Trunks
Port Security
Port Mirroring

C-4

Standards

IEEE 802.3 Ethernet, IEEE 802.3u Fast Ethernet
IEEE 802.3z Gigabit Ethernet
IEEE 802.1D Spanning Tree Protocol and traffic priorities
IEEE 802.1p priority tags, IEEE 802.1Q VLAN
IEEE 802.3ac VLAN tagging
IEEE 802.1Q VLAN Bridge Management
IEEE 802.3x full-duplex flow control
ISO/IEC 8802-3
SNMP (RFC 1157), RMON (RFC 1757), ARP (RFC 826),
IGMP (RFC 1112), MIB II (RFC 1213), Interfaces Evolution MIB
(RFC 1573), Ethernet-Like MIB (RFC 1643), Bridge MIB (RFC 1493)

Compliances

CE Mark

Emissions

FCC Class A
Industry Canada Class A
EN55022 (CISPR 22) Class A
VCCI Class A
C-Tick - AS/NZS 3548 (1995) Class A

S

PECIFICATIONS

Immunity

IEC 1000-4-2/3/4/6

Safety

CSA/NRTL (CSA 22.2.950 & UL 1950)
EN60950 (TÜV/GS)

Warranty

Limited Lifetime

C-5

S

PECIFICATIONS

Slide-in Module

100BASE-FX Extender Module

Model

SMC6900FSC, SMC6900FST

Ports

2 100BASE-FX

Network Interface

SC connector, 50/125 or 62.5/125 micron multimode fiber cable
(SMC6900FST includes SC-ST Converter)

Standards

802.3u Fast Ethernet

1000BASE-SX Extender Module

Model

SMC6900G

Ports

1 1000BASE-SX

Network Interface

SC connector, 50/125 or 62.5/125 micron multimode fiber cable

Standards

802.3z Gigabit Ethernet

C-6

Stack Module

Model

SMC6900S

Ports

2-Gbps uplink/downlink ports

Connector Interface

68-pin SCSI connector, copper cable

Standards

802.3z Gigabit Ethernet

S

PECIFICATIONS

C-7

S

PECIFICATIONS

C-8

A

PPENDIX

O

RDERING INFORMATION

TigerSwitch 10/100 Products and Accessories

Product Number Description

SMC6912M 12-port Fast Ethernet Switch with two media

SMC6924M 24-port Fast Ethernet Switch with two media

SMC6900S Stacking Module with 2-Gbps uplink/

SMC6900FSC Fiber Module with two 100BASE-FX Port

SMC6900FST SMC6900FSC + SC-ST Converter

SMC6900G Gigabit Module with one 1000BASE-SX Port

99-012034-091 SC to ST plug converter for fiber optic module

SMCRPU150W*

* Also available in models for Continental Europe and the UK.

expansion slots

expansion slots

downlink ports

(SC-type Connector)

(SC-type Connector)

Redundant Power Unit with cables,
supports one device

D

D-1

O

RDERING INFORMATION

D-2

G

LOSSARY

10BASE-T

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

100BASE-FX

IEEE 802.3u specification for 100 Mbps Fast Ethernet over two
strands of 50/125 or 62.5/125 micron core fiber cable.

100BASE-TX

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

1000BASE-SX

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

Auto-Negotiation

Signalling method allowing each node to select its optimum
operational mode (e.g., 10 Mbps or 100 Mbps and half or full
duplex) 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.

Glossary-1

G

LOSSARY

Class I Repeater

Fast Ethernet repeater that is principally used to connect different
physical signaling systems (e.g., 100BASE-TX, 100BASE-FX) and
that has an internal delay such that only one repeater of this type
can reside within a single collision domain when maximum cable
lengths are used.

Class II Repeater

Fast Ethernet repeater that typically supports a single physical
signaling system (e.g., 100BASE-TX, or 100BASE-FX) and that has a
smaller internal delay so that two such repeaters can reside within
a single collision domain when maximum cable lengths are used.

Collision

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

Collision Domain

Single CSMA/CD LAN segment.

CSMA/CD

Carrier Sense Multiple Access/Collision Detect is the
communication method employed by Ethernet and Fast Ethernet.

Crossover Port

Twisted-pair port with a built-in wiring crossover.

End Station

A workstation, server, or other device that does not act as a
network interconnection.

Glossary-2

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.

Fast Ethernet Switch

Device that provides a full 100 Mbps bandwidth (or either 10 or
100 Mbps bandwidth with Auto-Negotiation) to each port (LAN
segment).

Full Duplex

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

G

LOSSARY

Gigabit Ethernet

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

IEEE 802.3

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

Glossary-3

G

LOSSARY

IEEE 802.3u

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

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.

Link Segment

Length of twisted-pair or fiber cable joining a pair of repeaters or a
repeater and a PC.

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.

Glossary-4

MIB

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

MII

Media Independent Interface, the standard interface for Fast
Ethernet—similar to the AUI interface for traditional Ethernet.

Network Diameter

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

RJ-45 Connector

A connector for twisted-pair wiring.

Redundant Power Supply (RPS)

A backup power supply that automatically takes over in case the
primary power supply should fail.

Straight-through Port

An RJ-45 port which does not cross the receive and transmit
signals internally so it can be connected with straight-through
twisted-pair cable to any device having a crossover port. Also
referred to as a “Daisy-Chain” port.

G

LOSSARY

Switched Ports

Ports that are on separate collision domains or LAN segments.
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.

Glossary-5

G

LOSSARY

Glossary-6

I

NDEX

Numerics

10 Mbps connectivity rules 2-8
100 Mbps connectivity rules 2-7
1000 Mbps connectivity rules 2-6
1000BASE-SX

connections 4-5
fiber cable lengths 2-6

modules 1-8
100BASE cable lengths 2-7
100BASE-FX

connections 4-5

fiber 2-6

modules 1-7
100BASE-TX ports 1-3
10BASE cable lengths 2-8
10BASE-T ports 1-3

A

accessories, ordering D-1
address table size C-2
adhesive feet, attaching 3-5
agent module 1-5
air flow requirements 3-1
applications 2-2

central wiring closet 2-3

collapsed backbone 2-2

remote connections with fiber 2-4

VLAN connections 2-5

B

brackets, attaching 3-4
broadcast storm control 1-6
buffer size C-1
buffers, saturation of 1-3

C

cable

lengths 2-6

specifications B-1
CE Mark i
cleaning fiber terminators 4-5
compliances i

EMC C-5

safety C-5
connectivity rules

10 Mbps 2-8

100 Mbps 2-7

1000 Mbps 2-6
console port 1-5

pin assignments B-5
contents of package 3-2
cooling problems A-2
cord sets, international 3-7
crossover port 4-1

, 2-7, 2-8

D

DC input 1-8, 1-9
desktop mounting 3-5
device connections 4-1

E

EC conformance i
electrical interference, avoiding 3-1
EMC/safety compliance i
equipment checklist 3-2
Ethernet connectivity rules 2-8

F

Fast Ethernet connectivity rules 2-7
fault tolerance, Spanning Tree 1-6

Index-1

I

NDEX

FCC compliance i
features C-3

management 1-11

switch 1-10
fiber cables 4-5
flow control, IEEE 802.3x 1-3
front panel of switch 1-1
full-duplex connectivity 2-1

G

Gigabit Ethernet cable lengths 2-6
grounding for racks 3-3
GVRP 1-5

I

IEEE 802.3x flow control 1-3
indicators, LED 1-4
installation

connecting devices to the

switch 4-3
desktop or shelf mounting 3-5
installing optional modules 3-3
port connections 4-1
power requirements 3-1
problems A-2
rack mounting 3-3
RPUs in racks 3-5
site requirements 3-1
stacking 3-6
wiring closet connections 4-4

, 4-5

Mgmt 1-4
problems A-1
PWR 1-4
RDP 1-4

Status 1-5
limited warranty C-5
location requirements 3-1

M

management

agent 1-3

features 1-11, C-4

module 1-5

out-of-band 1-3

SNMP 1-3

Telnet 1-6

Web-based 1-3
MDI-X port 4-2
MIB support C-4
modules

1000BASE-SX 1-8

100BASE-FX 1-7

slide-in C-6

Stack C-7

stack 1-8
mounting the switch

in a rack 3-3

on a desktop or shelf 3-5
multicast switching 1-7

IGMP 1-7

IGMP Snooping 1-7
multimode fiber optic cables 4-5

, 1-5

, C-6

, C-6

L

laser safety iii, 4-5
LED indicators

Activity 1-4
FDX 1-4
Link 1-4

Index-2

, 1-5

N

network

connections 4-1

examples 2-2
null-modem cable 1-5

, 4-5

I

NDEX

O

optional

modules 1-2

modules, installation 3-3
optional equipment D-1
ordering information D-1
out-of-band management 1-3

, C-6

P

package contents 3-2
pin assignments B-2

100BASE-TX/10BASE-T B-3

25-pin DCE port B-6

25-pin DTE port B-7

console port B-5

DB-9 B-5
port saturation 1-3
port-based VLANs 2-5
ports, connecting to 4-1
power, connecting to 3-7
priority queues 1-7
problems, troubleshooting A-1

, 1-6

, 4-5

Q

QoS 1-5

R

rack mounting 3-3
rear panel of switch 1-2
rear panel receptacles 1-9
redundant power unit

See RPU

RJ-45 port connections 4-1
RJ-45 ports 1-3
RMON 1-3
routing applications 2-9

, 1-5

RPU 1-8

RS-232 port 1-5
rubber foot pads, attaching 3-5

, D-1

connecting 3-8
installing in a rack 3-5
installing on a desktop 3-5

S

safety compliance iii
sample applications 2-2
SC port connections 4-5
screws for rack mounting 3-2
SC-ST Converter 1-7
serial port 1-5
site selelction 3-1
SNMP agent 1-3
Spanning Tree Protocol 1-6
specifications

compliances C-5
environmental C-2
physical C-1

power C-2
stack, module 1-8
standards

compliance i

IEEE C-5
status LEDs 1-4
surge suppressor, using 3-1
switch architecture 1-2
switching, introduction to 2-1

, 4-5, 4-6, D-1

, 2-5, 4-1

, C-5

T

tags

priority 1-7

VLAN 2-5
Telnet 1-6
temperature within a rack 3-3
traffic priority 1-7

, A-3

Index-3

I

NDEX

troubleshooting

in-band access A-2
power and cooling problems A-2
switch indicators A-1

twisted-pair connections 4-1

U

UL compliance iii

V

VCCI compliance ii
VLANs 1-5

tagging 2-5

, 1-6, 2-5

W

warranty C-5
Web-based management 1-3
Weighted Fair Queuing 1-7

Index-4

FOR TECHNICAL SUPPORT, CALL:

From U.S.A. and Canada (8:30 AM - 8:00 PM Pacific Time)

(800) SMC-4-YOU; [phone]; [phone] (Fax)

From Europe (8:00 AM - 5:30 PM UK Greenwich Mean Time)

44 (0) 1189 748740; 44 (0) 1189 748741 (Fax)

INTERNET

E-mail addresses:

[e-mail]
[e-mail]

Driver updates:

http://www.smc.com/support.html

World Wide Web:

http://www.smc.com/

FTP Site:

ftp.smc.com

FOR LITERATURE OR ADVERTISING RESPONSE, CALL:

U.S.A. and Canada: (800) SMC-4-YOU; Fax [phone]
Spain: 34-93-477-4920; Fax [phone]
UK: 44 (0) 1189 748700; Fax [phone]
Southern Europe: 33 (1) 41.18.68.68; Fax [phone]
Central/Eastern Europe: 49 (0) 89 92861-200; Fax [phone]
Nordic: 46 (8) 564 33145; Fax [phone]
Middle East: 971-48818410; Fax [phone]
South Africa: 27 (0) 11-3936491; Fax [phone]
PRC: 86-10-6235-4958; Fax [phone]
Taiwan: 886-2-2747-4780; Fax [phone]
Asia Pacific: (65) 238 6556; Fax [phone]
Korea: 82-2-553-0860; Fax [phone]
Japan: 81-45-224-2332; Fax [phone]
Australia: 61-2-9416-0437; Fax [phone]
India: 91-22-8204437; Fax [phone]

6 Hughes
Irvine, CA 92618
Phone: [phone]

Model Numbers: SMC6912M, SMC6924M
Publication Number: F2.42 150070-102 E022001-R05