From SMC’s Tiger line of feature-rich workgroup LAN solutions
6 Hughes
Irvine, CA 92618
Phone: (949) 707-2400
December 2000
Pub. # F2.10c 150546-102 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.
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 customer at
customer’s expense. For warranty claims within North America, please call our
toll-free customer support number at (800) 762-4968. Customers are responsible for
all shipping charges from their facility to SMC. SMC is responsible for return
shipping charges from SMC to customer.
L
IMITED WARRANTY
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 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 ng s
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:
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.
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.
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 VoltageCord Set Specifications
120 VoltsUL 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
T
ABLE OF
C
ONTENTS
1 About the TigerSwitch 10/100 . . . . . . . . . . . . . . 1-1
SMC’s TigerSwitch™ 10/100 is a fast Ethernet switch with 24
10BASE-T/100BASE-TX ports, plus two slots for optional slide-in
1000BASE-SX modules. There is also an SNMP-based management
agent embedded on the main board. This agent supports both
in-band and out-of-band access for managing the switch.
Figure 1-1. SMC6724L2 Front Panel
10/100
1
Figure 1-2. SMC6724L2 Rear Panel
Figure 1-3. Optional 1000Base-SX Module
1-1
A
BOUT THE TIGERSWITCH
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 switch also includes two slots on the rear panel for optional
Gigabit modules that can be used to uplink to a collapsed Gigabit
backbone or for a high-speed server connection.
Management Options
This switch contains a comprehensive array of LEDs for
“at-a-glance” monitoring of network and port status. It also
includes a management agent that allows the switch 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 front panel for out-of-band
management.
1-2
A
BOUT THE TIGERSWITCH
Description of Hardware
10BASE-T/100BASE-TX Ports (SMC6724L2)
These ports are dual-speed RJ-45 ports. Ports 1 through 23 are
labeled with an “x” to indicate that they have a built-in crossover
(MDI-X). Workstations and servers can be connected to these ports
with straight-through cable. Port 24 is switch-selectable (MDI-X or
MDI). There is an associated switch that is used to enable and
disable the crossover, so this port can always be connected to
another hub or switch with straight-through cable. When
connecting to another switch or a hub, you can also use
straight-through cable to connect any port on the switch 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 auto-negotiation of IEEE 802.3x
full-duplex flow control, so the switch can automatically prevent
port buffers from becoming saturated.
10/100
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
LEDConditionStatus
PowerOnSwitch is receiving power.
RJ-45 Ports
Link &
Activity
On Port has established a valid network
connection.
YellowValid 10 Mbps connection.
GreenValid 100 Mbps connection.
1-4
FlashingTraffic is passing through the port.
FDXOnPort is operating at full duplex.
HDXOffPort is operating at half duplex.
Module Ports
Link &
Activity
OnA module is installed in this slot.
YellowCommunications have been set to 1000
Mbps.
FlashingTraffic is passing through the module.
A
BOUT THE TIGERSWITCH
Switch Management
This switch includes a built-in management agent that offers a
variety of management options, including SNMP, RMON and a
Web-based interface. The switch also includes an RS-232 serial
port for out-of-band management. A PC may be connected to this
port for configuration and monitoring purposes out-of-band via a
full-handshaking null-modem cable.
The management agent 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
real-time multimedia data across the network. Flow control
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 the switch’s advanced features are described below. For a
detailed description, refer to the Management Guide.
10/100
moving
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
1-5
A
BOUT THE TIGERSWITCH
port, or in-band via the Web interface, Telnet, or SNMP network
management software.
VLANs
The TigerSwitch 10/100 supports up to 64 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.
•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.
10/100
Traffic Priority
This switch provides Quality of Service (QoS) by prioritizing each
packet based on the required level of service, using four distinct
categories with Weighted Round Robin 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.
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 full-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).
Power Supply Receptacle
The power receptacle is located on the rear panel of the switch.
The standard power receptacle is for the AC power cord.
10/100
Figure 1-6. Power Supply Receptacle
1-7
A
BOUT THE TIGERSWITCH
10/100
Features and Benefits
Connectivity
◆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 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, full duplex, with auto-negotiation for flow
control
1-8
A
BOUT THE TIGERSWITCH
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
◆Desktop or rack-mountable
◆Limited lifetime warranty
Management
◆“At-a-glance” LEDs for easy troubleshooting
◆Management agent:
•Supports Telnet, SNMP/RMON and Web-based interface
10/100
•Manages entire switch in-band or out-of-band
•Spanning Tree Protocol for redundant network
connections
•VLAN support for 64 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 Round Robin Queueing
•Multicast Switching based on IGMP (Internet Group
Management Protocol) Snooping and Multicast Filtering
1-9
A
BOUT THE TIGERSWITCH
10/100
1-10
C
HAPTER
N
ETWORK
P
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.
2-1
N
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, 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
2-2
N
ETWORK PLANNING
Remote Connections with Fiber Cable
Fiber optic technology allows for longer cabling than any other
media type (up to 550 meters for 1 Gbps fiber). The TigerSwitch
can serve as a collapsed backbone, providing direct connectivity
for a widespread LAN. 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 2-2. Collapsed Backbone Using Fiber Cable
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).
2-3
N
ETWORK PLANNING
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 2-3. Making VLAN Connections
Note: When connecting to a switch that does not support IEEE
802.1Q VLAN tags, use untagged ports.
2-4
N
ETWORK PLANNING
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 Fiber Optic Cable Distance for 1000BASE-SX
Fiber SizeFiber BandwidthMaximum Cable Length
62.5/125 micron160 MHz/km7-722 ft. (2-220 m)
200 MHz/km7-902 ft. (2-275 m)
50/125 micron400 MHz/km7-1641 ft. (2-500 m)
500 MHz/km7-1805 ft. (2-550 m)
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)
2-5
N
ETWORK PLANNING
Maximum Network Diameter Using Repeaters
Repeater Type
and Number
1 Class I200 m (656 ft.)
1 Class II200 m (656 ft.)
2 Class II205 m (672.4 ft.)
Twisted Pair
100BASE-TX
Maximum Fast Ethernet Cable Distance
Cable TypeConnectingMax. Distance
Twisted PairAny two devices100 m (328 ft.)
FiberSwitch to switch, server or PC
Half duplex412 m (1,351.4 ft.)
Full duplex2 km (1.24 mi.)
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 TypeMaximum Length
Twisted Pair, Categories 3, 4, 5100 m (328 ft.)
Thin Coax185 m (607 ft.)
External Transceiver Drop50 m (165 ft.)
2-6
N
ETWORK PLANNING
Application Notes
1. Full-duplex operation only applies to point-to-point access
(such as when a switch is attached to a workstation, server or
another switch). When the switch is connected to a hub, both
devices must operate in half-duplex mode.
2. 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).
2-7
N
ETWORK PLANNING
2-8
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HAPTER
I
NSTALLING THE
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
◆Mak e su re t wist ed- pai r cab le i s al w ay s rou te d aw a y f r om pow e r
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.
3-1
I
NSTALLING THE SWITCH
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, SMC6724L2
◆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
◆Management 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)
3-2
I
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.
Installing Optional Modules: Before mounting the switch, be
sure you install any optional modules. If you have purchased
optional slide-in 1000BASE-SX media expansion 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.
3-3
I
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
3-4
I
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.
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.
3-5
I
NSTALLING THE SWITCH
Connecting to a Power Source
To connect a device to a power source:
1. Insert the power cable plug directly into the receptacle located
at the back of the device.
Figure 3-4. 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.
3-6
C
HAPTER
M
AKING
C
N
ETWORK
ONNECTIONS
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 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.
Twisted-Pair Devices
4
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
(MDI-X). Since network cards do not cross their internal wiring to
4-1
M
AKING NETWORK CONNECTIONS
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)CrossoverCrossover
Crossover (x)Straight-throughStraight-through
Straight-through (=)CrossoverStraight-through
Straight-through (=)Straight-throughCrossover
And the port on the
other device is...
Then use...cable
Warning: 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.
4-2
M
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. 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.
3. 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.
4. 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.
4-3
M
AKING NETWORK CONNECTIONS
5. 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.
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
4-4
M
AKING NETWORK CONNECTIONS
Fiber Optic Devices
An optional slide-in 1000BASE-SX module may 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).
Caution: 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.
4-5
M
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 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 2-5.
4-6
A
PPENDIX
T
ROUBLESHOOTING
Diagnosing Switch Indicators
Troubleshooting Chart
SymptomAction
Power LED is Off•Internal power supply has failed or is
disconnected.
•Check connections between the switch, the
power cord, the wall outlet.
•If the switch is installed in a rack, check the
connections to the punch-down block and patch
panel.
•Contact SMC Tech 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
Tech 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
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 TypeCategoryConnector
100-ohm UTP, 22 - 26 AWG
0.4 - 0.6 mm, 2 pairs
100BASE-TX Twisted-Pair Cable
Cable TypeCategoryConnector
100-ohm UTP, 22 - 26 AWG
0.4 - 0.6 mm, 2 pairs
100BASE-FX and 1000BASE-SX Duplex Fiber Cable
Cable TypeConnector
62.5/125 or 50/125 micron coreSC
A
PPENDIX
C
ABLES
3, 4, 5male, 8-pin RJ-45
5male, 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 1End 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 1End 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 front 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.
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
Unit: Limited Lifetime
C-5
S
PECIFICATIONS
Slide-in Module
1000BASE-SX Extender Module
Model
SMC6724L2GSSC
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
A
PPENDIX
O
RDERING INFORMATION
TigerSwitch 10/100 Products and Accessories
Product NumberDescription
SMC6724L224-port Fast Ethernet Switch with two media
expansion slots
SMC6724L2GSSC Gigabit Module with one 1000BASE-SX Port
(SC-type Connector)
99-012034-091SC to ST plug converter for fiber optic module
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
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.
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
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.
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.
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.