SMC Networks SMC108DT User manual

EZ Switch 10/100
• 8-Port Fast Ethernet Switch
• 8 10/100 auto-MDI/X ports – connect to PCs or
other switches or hubs
• Plug and Play – nothing to configure,no
crossover cables required
• Auto-negotiation of speed and duplex mode
• Full-duplex support on all ports
• Half- and Full-duplex flow control
• Desktop and wall-mountable
User Guide
SMC108DT

Copyright
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 implica-
tion or otherwise under any patent or patent rights of SMC. SMC
reserves the right to change specifications at any time without notice.
Copyright 2002 by
SMC Networks Inc.
38 Tesla
Irvine, CA. 92618
Phone: [phone]
All rights reserved. Printed in Taiwan
Trademarks:
SMC is a registered trademark; and EZ Switch is a trademark of SMC
Networks, Inc. Other product and company names are trademarks or
registered trademarks of their respective holders.

Limited Warranty
SMC's 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 dis-
cretion, repair or replace any product not operating as warranted with
a similar or functionally equivalent product, during the applicable war-
ranty 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 prod-
uct 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 dis-
cretion, replace an older product in its product line with one that incor-
porates these newer technologies. At that point, the obsolete product
is discontinued and is no longer an 'Active' SMC product.
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 infor-
mation, or memory data of Customer contained in, stored on, or inte-
grated with any products returned to SMC pursuant to any warranty.
Products returned to SMC should have any customer-installed accesso-
ry 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 num-

ber 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 war-
ranty 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 EXCLU-
SIVE 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 CONDI-
TIONS OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PUR-
POSE. SMC NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PER-
SON 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 PROD-
UCT 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 ACCI-
DENT, FIRE, LIGHTNING, OR OTHER HAZARD.
LIMITATION OF LIABILITY: IN NO EVENT, WHETHER BASED IN CON-
TRACT 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 BUSI-
NESS, OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNEC-
TION WITH THE SALE, INSTALLATION, MAINTENANCE, USE, PERFOR-
MANCE, FAILURE, OR INTERRUPTION OF ITS PRODUCTS, EVEN IF SMC
OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSI-
BILITY OF SUCH DAMAGES.
SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED WAR-
RANTIES 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 discontinu-
ance from the active SMC price list. Under the limited lifetime warran-
ty, internal and external power supplies, fans, and cables are covered
by a standard one-year warranty from date of purchase.

Compliances
FCC Class B
This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and
used in accordance with instructions, may cause harmful interference
to radio communications. However, there is no guarantee that the
interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the
following measures:
. Reorient the receiving antenna
. Increase the separation between the equipment and receiver
. Connect the equipment into an outlet on a circuit in a different room
that to which the receiver is connected
. Consult the dealer or an experienced radio/TV technician for help.
Safety Compliance
Underwriters Laboratories Compliance Statement
Important! Before making connections, make sure you have the correct
cord set. Check it (read the label on the cable) against the following:
Operating Voltage
120 Volts
240 Volts (Europe Only)
Cord Set Specifications
UL Listed/CSA certified cord set
Minimum 18 AWG
Type SVT or SJT three conductor cord
Maximum length of 15 feet
Parallel blade, grounding type attach-
ment plug rated 15A, 125V
Cord Set with H05VV-F cord having
three conductors with minimum diam-
eter of 0.75 mm2
IEC-320 receptacle
Male plug rated 10 A, 250V

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.

TABLE OF CONTENTS
Copyright 2002 by.................................................................................................1
TABLE OF CONTENTS..........................................................................................4
Features and Benefits..........................................................................................5
Top Panel LEDs......................................................................................................6
INSTALLING THE SWITCH....................................................................................7
Selecting a Site......................................................................................................8
Instructions.............................................................................................................8
SAMPLE APPLICATIONS......................................................................................9
Standalone LAN.....................................................................................................9
High-Speed Switch links......................................................................................9
TROUBLESHOOTING...........................................................................................10
Probable Causes...................................................................................................10
Possible Solutions................................................................................................10
CABLES....................................................................................................................11
Cable Specifications.............................................................................................11
Cable Types and Specifications.........................................................................11
Twisted-Pair Cable and Pin Assignments........................................................11
Straight-through RJ-45 Pin Assignment.........................................................11
Connectivity Guidelines.......................................................................................11
Maximum Fast Ethernet Network Diameter..................................................12
SPECIFICATIONS...................................................................................................12
Filtering/Forwarding/Learning Rates..............................................................12
Size..........................................................................................................................12
Weight.....................................................................................................................12
Temperature..........................................................................................................12
Humidity, non-condensing..................................................................................12
Power Requirements...........................................................................................13

ABOUT THE EZ Switch 10/100
The EZSwitch 10/100 SMC108DT is an 8-port Fast Ethernet switch. The
10BASE-T/100BASE-TX ports deliver dedicated 10/100Mbps links to each
attached LAN segment – all with conventional cabling and adapters.
Auto-Negotiation is used to select the optimal communication mode
for each connection. Auto-sensing is used to select the optimal trans-
mission speed for each connection. With store-and-forward switching
and flow control, maximum data integrity is always maintained, even
under heavy loading. Easy installation and reliability make this plug-
and-play switch an ideal choice for smooth Fast Ethernet integration.
Features and Benefits
. Auto-negotiation of half or full duplex, and auto-sensing of transmis-
sion speed, on all ports
. Auto configuration for MDI/MDI-X cable connection allows connec-
tions to servers, workstations, hubs or switches to be made with
straight-through cabling
. ANSI/IEEE802.3u 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 being
dropped under heavy loading
. plug-and-play
. ‘At-a-glance’ LEDs for port and system status monitoring
. Desktop and wall mountable

Top Panel LEDs
The top panel of the switch provides a link status LED for each RJ-45
PORT. In addition, the front panel also contains status LEDs for ‘at-a-
glance’ system monitoring. The following table details the functions of
the various kinds of indicators:
LED
LED
Power
RJ-45 Ports
100M
Link/Act
Condition
On Green
On
Off
ON
Status
The switch is receiving
power
Communications have
been set to 100Mbps
Communications have
been set to 10Mbp
The port has estab-
lished a valid network
connection
Port and Switch status LEDs