SMC Networks Tiger SMC6608M, SMC6608T User Manual
TigerSwitch 100
User Guide
From SMC’s Tiger line of feature-rich workgroup LAN solutions
March 1998
900.168 Rev. B
TigerSwitch 100
8-port Fast Ethernet Switches
◆ Two models featuring either:
◆ Eight fixed Auto-Negotiating 100BASE-TX ports
◆ Two 4-port replaceable modules with 100BASE-TX
and/or 100BASE-FX ports
◆ 1.6 Gbps internal bandwidth
◆ In-band and out-of-band management
User Guide
SMC6608T SMC6608M
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 © 1997 by
SMC Networks, Inc.
Hauppauge, New York.
All rights reserved. Printed in U.S.A.
Trademarks:
SMC is a registered trademark; and TigerSwitch, TigerStack, EZ Hub, EZ Switch and
EliteFax are trademarks of SMC Networks, Inc. Other product and company names are
trademarks or registered trademarks of their respective holders.
Limited Warranty
HARDWARE: SMC Networks, Inc. (“SMC”) warrants these TigerSwitch 100 units
to be free from defects in workmanship and materials, under normal use and
service, for the following length of time from the date of purchase from SMC or
its Authorized Reseller:
TigerSwitch 100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Three Years
If a product does not operate as warranted during the applicable warranty
period, SMC shall, at its option and expense, repair the defective product or
part, deliver to Customer an equivalent product or part to replace the defective
item, or refund to customer the purchase price paid for the defective product.
All products that are replaced will become the property of SMC. Replacement
products may be new or reconditioned. Any replaced or repaired product or
part has a ninety (90) day warranty or the remainder of the initial warranty
period, whichever is longer.
SMC shall not be 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.
SOFTWARE: SMC warrants that the software programs licensed from it will
perform in substantial conformance to the program specifications for a period
of ninety (90) days from the date of purchase from SMC or its Authorized
Reseller. SMC warrants the magnetic media containing software against failure
during the warranty period. No updates are provided. SMC’s sole obligation
hereunder shall be (at SMC’s discretion) to refund the purchase price paid by
Customer for any defective software products or to replace any defective media
with software which substantially conforms to SMC’s applicable published specifications. Customer assumes responsibility for the selection of the appropriate
applications program and associated reference materials. SMC makes no warranty that its software products will work in combination with any hardware or
applications software products provided by third parties, that the operation of
the software products will be uninterrupted or error free, or that all defects in
the software products will be corrected. For any third party products listed in
the SMC software product documentation or specifications as being compatible,
SMC will make reasonable efforts to prove compatibility, except where the
non-compatibility is caused by a “bug” or defect in the third party’s product.
STANDARD WARRANTY SERVICE: Standard warranty service for hardware
products may be obtained by delivering the defective product, accompanied
by a copy of the dated proof of purchase, to SMC’s Service Center or to an
Authorized SMC Service Center during the applicable warranty period. Standard
warranty service for software products may be obtained by telephoning SMC’s
Service Center or an Authorized SMC Service Center, within the warranty
period. Products returned to SMC’s Service Center must be pre-authorized by
LIMITED WARRANTY
SMC with a Return Material Authorization (RMA) number marked on the outside of the package, and sent prepaid, insured, and packaged appropriately for
safe shipment. The repaired or replaced item will be shipped to Customer, at
SMC’s expense, not later than thirty (30) days after receipt by SMC.
WARRANTIES EXCLUSIVE: IF AN SMC PRODUCT DOES NOT OPERATE AS
WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY SHALL BE REPAIR,
REPLACEMENT OR REFUND OF THE PURCHASE PRICE PAID, 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. NOTHING
HEREIN SHALL HAVE THE EFFECT OF LIMITING OR EXCLUDING SMC’S
LIABILITY FOR DEATH OR PERSONAL INJURY CAUSED BY NEGLIGENCE.
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
350 Kennedy Drive
Hauppauge, NY 11788
516-435-6000
TABLE OF CONTENTS
Compliances.......................................................... v
1 About The TigerSwitch 100........................... 1-1
TigerSwitch 100 Overview ................................................. 1-3
Switch Architecture............................................................. 1-10
Management Options ......................................................... 1-12
Key Features and Benefits.................................................. 1-13
2 Planning......................................................... 2-1
Introduction to Switching................................................... 2-2
Sample Applications ........................................................... 2-3
3 Installation..................................................... 3-1
Selecting a Site.................................................................... 3-2
Equipment Checklist........................................................... 3-3
Mounting ............................................................................. 3-4
Powering Up....................................................................... 3-7
Making Network Connections............................................ 3-9
4 Configuration and Management.................. 4-1
Configuration Options........................................................ 4-3
Basic Port Settings............................................................... 4-4
Advanced System Configuration........................................ 4-5
System Monitoring .............................................................. 4-19
Advanced System Monitoring............................................. 4-21
Downloading System Software .......................................... 4-28
Resetting the Switch............................................................ 4-30
5 Management via SNMP.................................. 5-1
SNMP Protocol .................................................................... 5-2
MIB Objects......................................................................... 5-3
SNMP Parameter Configuration.......................................... 5-4
i
TABLE OF CONTENTS
Appendices
A Troubleshooting............................................ A-1
Switch Indicators................................................................. A-2
Diagnostic Tests.................................................................. A-3
System Diagnostics ............................................................. A-4
B Pin Assignments............................................ B-1
RJ-45 Pin Assignments........................................................ B-2
Console Port Pin Assignments ........................................... B-4
C Specifications ................................................ C-1
All Models ........................................................................... C-2
SMC6608T............................................................................ C-4
SMC6608M........................................................................... C-4
D Glossary ......................................................... D-1
ii
TABLE OF CONTENTS
List of Figures
1-1. TigerSwitch 100T with 8 10BASE-T/100BASE-TX Ports
(Model SMC6608T)..................................................... 1-4
1-2. TigerSwitch 100M Base Unit...................................... 1-4
1-3. 4-Port Fast Ethernet Modules .................................... 1-4
1-4. 10BASE-T/100BASE-TX Ports .................................... 1-6
1-5. 100BASE-FX Ports ...................................................... 1-6
1-6. Front Panel LEDs........................................................ 1-7
1-7. Front Panel LED Arrays.............................................. 1-7
1-8. Console Port............................................................... 1-8
1-9. Configure Button........................................................ 1-8
1-10. Power Supply Receptacles......................................... 1-9
2-1. Collapsed Backbone.................................................. 2-3
2-2. Multiport Bridging Connections................................ 2-4
2-3. Server Farm Connectivity and Expansion................. 2-5
2-4. Cascading to a Fast Ethernet Switch......................... 2-6
2-5. Collapsed Backbone Using Fiber Cable ................... 2-7
2-6. High-Speed Fiber Backbone ..................................... 2-8
3-1. Attaching the Brackets............................................... 3-5
3-2. Installing the Switch in a Rack.................................. 3-5
3-3. Attaching the Adhesive Feet...................................... 3-6
3-4. Switch-Selectable Daisy-Chain Port ......................... 3-12
3-5. Fiber Cable Connectors ............................................. 3-13
4-1. System Configuration Program Login Screen........... 4-7
4-2. System Configuration Program Main Menu.............. 4-8
4-3. Password Configuration Screen................................. 4-10
4-4. Console Configuration Screen................................... 4-11
4-5. System Configuration Screen..................................... 4-12
4-6. Port Configuration Screen.......................................... 4-14
4-7. Spanning Tree Configuration Screen........................ 4-16
iii
TABLE OF CONTENTS
4-8. Virtual LAN Configuration Screen............................. 4-18
4-9. System Information Screen........................................ 4-21
4-10. Port Status Screen....................................................... 4-22
4-11. Statistics Screen .......................................................... 4-23
4-12. Address Table Screen................................................. 4-25
4-13. Spanning Tree Information Screen ........................... 4-26
4-14. TFTP Download Screen............................................. 4-28
4-15. Reset Screen ............................................................... 4-30
5-1. SNMP Configuration Screen ...................................... 5-4
5-2. Community Strings Screen......................................... 5-5
5-3. Trap Receivers Screen................................................ 5-6
B-1. RJ-45 Connector Pin Numbers................................... B-2
B-2. DB-9 Console Port Pin Numbers............................... B-4
iv
COMPLIANCES
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—
Category 3 or greater for 10 Mbps connections and Category 5 for 100 Mbps
connections. Use 50/125 or 62.5/125 multimode fiber optic cable for SC or STtype connections.
Warnings 1. Wear an anti-static wrist strap or take other suitable measures to
EC Conformance Declaration
SMC contact for these products in Europe is:
SMC (Europe) Limited
1st Floor, Pyramid House, Easthampstead Road
Bracknell, Berkshire RG12 1NS, United Kingdom
This information technology equipment complies with the requirements of the
Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC. It
conforms to the following specifications:
EMC: EN55022 (1988)/CISPR-22 (1995) Class A
An EC Declaration of Conformity in accordance with ISO/IEC Guide 22 and
EN45014 was issued for this product.
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.
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)
0.5 kV - (signal line)
IEC 1000-4-6 (1995) 3 Vrms
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 Industry Canada.
v
COMPLIANCES
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 l’Industrie.
Japan VCCI Class A
Australia AS/NZS 3548 (1995) - Class A
SMC contact for products in Australia is:
SMC Communications Pty. Ltd.
LVL 10, 201 Miller Street, North Sydney, NSW 2060
Phone: 61-2-9929-9150
Fax: 61-2-9929-9140
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 Cord Set Specifications
20 Volts UL Listed/CSA Certified Cord Set
1
Minimum 18 AWG
Type SVT or SJT three conductor cord
Maximum Length of 15 feet
Parallel blade, grounding type attachmentplug rate 15 A, 125 V
240 Volts Cord Set with H05VV-F cord having three
(Europe Only) conductors with minimum diameter of 0.75 mm
IEC-320 receptacle
Male plug rated 6 A, 250 V
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.
vi
Wichtige Sicherheitshinweise
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 Netzanschluß steckdose 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.
COMPLIANCES
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.
vii
COMPLIANCES
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.
Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635
Teil 1000 beträgt 70dB(A) oder weniger.
viii
CHAPTER 1
ABOUT THE
TIGERSWITCH 100
TigerSwitch 100 Overview . . . . . . . . . . . . . . . 1-3
Fast Ethernet Modules for Model
SMC6608M . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Switch Ports . . . . . . . . . . . . . . . . . . . . . . . 1-6
10BASE-T/100BASE-TX Ports . . . . . . . . . 1-6
100BASE-FX Ports . . . . . . . . . . . . . . . . . 1-6
Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Console Port . . . . . . . . . . . . . . . . . . . . . . . 1-8
Configure Button . . . . . . . . . . . . . . . . . . . . 1-8
Optional Redundant Power Unit . . . . . . . . 1-9
Power Supply Receptacles . . . . . . . . . . . . . 1-9
Switch Architecture . . . . . . . . . . . . . . . . . . . . 1-10
Switching Methods . . . . . . . . . . . . . . . . . . 1-10
Adaptive Cut-through . . . . . . . . . . . . . . 1-10
Cut-through . . . . . . . . . . . . . . . . . . . . . 1-10
Fragment-free . . . . . . . . . . . . . . . . . . . . 1-10
Store-and-forward . . . . . . . . . . . . . . . . . 1-10
Spanning Tree Protocol . . . . . . . . . . . . . . . 1-11
1-1
ABOUT THE TIGERSWITCH 100
Management Options . . . . . . . . . . . . . . . . . . . 1-12
Serial Console Port . . . . . . . . . . . . . . . . . . 1-12
Telnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Key Features and Benefits . . . . . . . . . . . . . . . 1-13
Connectivity . . . . . . . . . . . . . . . . . . . . . . . 1-13
Performance . . . . . . . . . . . . . . . . . . . . . . . 1-13
Practical Management . . . . . . . . . . . . . . . . 1-14
Easy Installation . . . . . . . . . . . . . . . . . . . . 1-14
1-2
ABOUT THE TIGERSWITCH 100
TigerSwitch 100 Overview
SMC’s TigerSwitch™ 100 units are intelligent Fast Ethernet
switches. There are two TigerSwitch 100 models available. The
first, the TigerSwitch 100T (SMC6608T), features 8 fixed
10BASE-T/100BASE-TX ports. The predominance of dualspeed, Auto-Negotiating ports on the SMC6608T make this unit
ideally suited for Fast Ethernet migration.
The ports on the other TigerSwitch 100 model, the TigerSwitch
100M (SMC6608M), are distributed among two slide-in,
removable modules. The modules are sold separately from the
base unit and feature various combinations of 10BASE-T/
100BASE-TX and 100BASE-FX ports. This modular design
allows for numerous variations in port configuration, making
this switch highly versatile and adaptable to any number of
different network applications.
The TigerSwitch 100 models employ a high-speed, nonblocking switching fabric. This design allows for simultaneous
wire-speed transport of multiple packets at low latency on all
ports. They also feature full-duplex capability on all ports,
which effectively doubles the bandwidth of each connection.
These switches also provide for effective system management.
In addition to “at a glance” LEDs, the TigerSwitch 100 models
are equipped with system configuration software that can be
accessed out-of-band via an RS-232 console port or in-band via
Telnet. Also included is an on-board SNMP agent, which can
be used to manage the switch with SMC’s EliteView™ or any
other SNMP-based management application.
The TigerSwitch 100 units support an optional Redundant
Power Unit to minimize downtime in the event of an AC power
failure.
1-3
ABOUT THE TIGERSWITCH 100
Figure 1-1. TigerSwitch 100T with 8 10BASE-T/100BASE-TX
Ports (Model SMC6608T)
Figure 1-2. TigerSwitch 100M Base Unit
(Model SMC6608M)
Figure 1-3. 4-port Fast Ethernet Modules
1-4
ABOUT THE TIGERSWITCH 100
4-Port Fast Ethernet Modules for Model SMC6608M
The avalable slide-in modules are listed below:
Module Ports Connectors Description
SMC6600T 1-3 RJ-45 100BASE-TX, fixed
crossover
4 RJ-45 100BASE-TX, switch-
selectable crossover
SMC6600F 1-4 SC 100BASE-FX, fiber
SMC6600FSCT 1-2 SC 100BASE-FX, fiber
3 RJ-45 100BASE-TX, fixed
crossover
4 RJ-45 100BASE-TX, switch-
selectable crossover
SMC6600FSTT 1-2 ST 100BASE-FX fiber
3 RJ-45 100BASE-TX, fixed
crossover
4 RJ-45 100BASE-TX, switch-
selectable crossover
1-5
ABOUT THE TIGERSWITCH 100
Switch Ports
10BASE-T/100BASE-TX Ports
These ports are dual-speed RJ-45 ports with built-in wiring
crossovers. Each TigerSwitch 100 equipped with 10BASE-T/
100BASE-TX ports will contain at least one straight-through
(daisy-chain) port. This port is used for straight-through cable
connections to other devices (i.e., hubs or switches) which have
ports with built-in crossovers.
Figure 1-4. 10BASE-T/100BASE-TX Ports
Each 10BASE-T/100BASE-TX port supports Auto-Negotiation, so
the optimum transmission mode (half or full duplex) and data
rate (10 Mbps or 100 Mbps) are selected automatically. If a
device connected to one of these ports does not support AutoNegotiation, the communication mode of that port can be
configured manually.
100BASE-FX Ports (SMC6608M only)
The 100BASE-FX ports are fitted with SC or ST connectors
(depending on the module) and operate exclusively at 100
Mbps. However, the transmission mode for these ports is
adjustable to full- or half-duplex and must be set manually.
Figure 1-5. 100BASE-FX Ports
1-6
ABOUT THE TIGERSWITCH 100
Status LEDs
The LEDs on the TigerSwitch 100 models are located on the
front panel for easy viewing. For a more complete discussion
of the front-panel LEDs, see Chapter 4, “Configuration and
Management.”
Figure 1-6. Front Panel LEDs
Figure 1-7. Front Panel LED Array
1-7
ABOUT THE TIGERSWITCH 100
Console Port
Both TigerSwitch 100 units contain a Console port on the front
panel. 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 full-handshaking null
modem cable. (See Appendix B)
Figure 1-8. Console Port
Configure Button
The Configure button is located on the left-front panel of the
TigerSwitch 100 and is used in conjunction with the LEDs to
display a wide range of performance and status data for every
port. The Configure button can also be used to manually set
port communication modes and initiate diagnostic tests.
Figure 1-9. Configure Button
1-8
ABOUT THE TIGERSWITCH 100
Optional Redundant Power Unit
SMC’s Redundant Power Units (RPUs) are separate devices and
each has its own power cord. These devices can supply power
to the unit in the event of a failure of the internal power supply.
The available RPUs are listed in the table below. Contact your
reseller for advice regarding the appropriate RPU for your
specific application.
Redundant Power Units (RPUs)
Order Number Description
SMC-RPUX1 Supports one SMC device
SMC-RPUX5 Supports up to 5 SMC devices
Power Supply Receptacles
There are two power receptacles on the rear-panel of each
TigerSwitch 100. The standard receptacle labeled “Power” is for
the AC power cord. The 14-pin receptacle labeled “DC Input” is
for the optional Redundant Power Unit (RPU).
Figure 1-10. Power Supply Receptacles
1-9
ABOUT THE TIGERSWITCH 100
Switch Architecture
Switching Methods
Adaptive Cut-Through
SMC’s TigerSwitch 100 models employ a dynamic forwarding
architecture that enables them to support adaptive cut-through
frame forwarding mode. This approach allows the switch to
automatically alternate between three different switching
methods to provide the best possible performance in response
to current network conditions.
Cut-Through
Also known as “on-the-fly” switching, the cut-through switching
technique involves forwarding each data packet as soon as the
6 byte destination address in the header has been read. It does
not wait until the entire packet has been received. This
method, which takes up the least processing time, reduces the
latency of each packet to twenty microseconds (20 µsec) or less.
Cut-through switching mode is the default setting of each port
on the TigerSwitch 100.
Fragment-Free
This switching method is similar to cut-through, but it requires
that the first 64 bytes of the data packet be received before it is
forwarded. This enables the switch to discard runt packets smaller than legal size packets which are collision byproducts and effectively clean up the data stream. This method provides
the greatest benefit when the collision rate is high (e.g., when
the switch is used to interconnect several shared segments, each
having a large number of end stations.)
Store-and-Forward
In store-and-forward switching mode, the entire packet must be
received into a buffer and checked for validity before being
forwarded. This prevents errors from being propagated
throughout the network.
1-10
ABOUT THE TIGERSWITCH 100
Spanning Tree Protocol
The TigerSwitch 100 switches support the ANSI/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, the 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 Spanning Tree Protocol is “enabled”. This
protocol may be configured (enabled or disabled) out-of-band
via the serial console port or in-band via the SNMP agent or
Telnet.
1-11
ABOUT THE TIGERSWITCH 100
Management Options
The TigerSwitch 100 units may be managed using any one of
the following three methods:
♦ Out-of-band via the RS-232 console port
♦ In-band via Telnet
♦ In-band via any SNMP-based network management program
that includes a compiler
Serial Console Port
The switches may be managed out-of-band using a PC
connected to the console port with an RS-232 full-handshaking
null modem cable. The console port operates at 9600 baud
(default value) or 19,200 baud and can be password-protected.
A terminal application for use on the PC, such as Windows
Terminal, is also required. See Chapter 4, “Configuration and
Management,” for further information regarding out-of-band
management.
Telnet
The switches can also be managed in-band via a Telnet connection using TCP/IP protocol. The Telnet user interface is menudriven and the switch’s operating parameters can be passwordprotected. See Chapter 4, “Configuration and Management,” for
further information regarding in-band management.
SNMP
Another method by which these switches may be managed is
in-band from a workstation via an SNMP-based manager (i.e.,
SMC’s EliteView). Simple Network Management Protocol
(SNMP) is the most popular management protocol in use today.
It defines the structure of information maintained on a device
being managed and the operations used to access that
information. See Chapter 5, “SNMP Management,” for further
information regarding in-band SNMP.
1-12
ABOUT THE TIGERSWITCH 100
Key Features and Benefits
Connectivity
• Slide-in, replaceable 4-port modules for added flexibility
(Model SMC6608M only)
• 100BASE-FX ports with SC or ST connectors (Model
SMC6608M only)
• Auto-Negotiation on 10BASE-T/100BASE-TX ports
automatically selects optimum communication mode (half or
full duplex and 10 Mbps or 100 Mbps) if this feature is
supported by the attached device; otherwise port can be
configured manually
• IEEE 802.3 Ethernet and 802.3u Fast Ethernet compliance
ensures compatibility with standards-based hubs, cards and
switches from any vendor
• Independent RJ-45 10BASE-T/100BASE-TX ports with built-in
wiring crossovers for straight-through cable connections
• 10BASE-T/100BASE-TX daisy-chain port(s) for network
device connections with straight-through cable
• Half- or full-duplex operation on each port
• 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
• One RS-232 serial console port for local or remote outof-band management
Performance
• Aggregate bandwidth of 1.6 Gbps
• Minimum latency of packet transmission less than 20
microseconds (cut-through switching mode)
• Transparent bridging function supported
1-13
ABOUT THE TIGERSWITCH 100
• Operates at maximum packet filtering and forwarding rate
• Supports cut-through, store-and-forward, fragment-free and
adaptive cut-through packet transport techniques
• Routing table with over 4 K MAC address entries for attached
network nodes
• Automatically learns MAC addresses to build the routing
information database
• Fast hashing scheme quickly retrieves information from
routing table
• Filters and forwards packets at line-rate speed on all ports
• Non-blocking cross-bar switching matrix allows concurrent
operation of up to 8 LAN segments
• Back pressure Flow Control eliminates frame loss
• Automatically filters local traffic
• Transparent to all higher level protocols
Practical Management
• “At-a-Glance” LEDs for monitoring all segments
• Configure button simplifies basic configuration and
monitoring
• Console Interface for more advanced configuration and port
control
Easy Installation
• Desktop and rack-mountable (standard 19-inch rack)
• Self-diagnostics
• Automatic polarity detection and correction
1-14
CHAPTER 2
PLANNING
Introduction to Switching . . . . . . . . . . . . . . . . 2-2
Sample Applications . . . . . . . . . . . . . . . . . . . 2-3
Collapsed Backbone . . . . . . . . . . . . . . . . . 2-3
Multiport Bridging . . . . . . . . . . . . . . . . . . . 2-4
High-Speed Switch Links . . . . . . . . . . . . . . 2-5
Collapsed Backbone with Fiber Cable . . . . 2-6
High-Speed Fiber Backbone . . . . . . . . . . . 2-7
Departmental Segment Network and
Server Farm Aggregation . . . . . . . . . . . . . . 2-8
Application Notes . . . . . . . . . . . . . . . . . . . 2-9
2-1
PLANNING
Introduction to Switching
An Ethernet or Fast Ethernet switch allows simultaneous
transmission of multiple packets via high-bandwidth shared
memory. This means that it can partition a network more
efficiently than bridges or routers. The switch is, therefore, fast
being 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 highvolume file server), the device (server, power user or switch)
can be attached directly to a switched port. And, by using fullduplex 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.
A switch can be easily configured in any Ethernet or Fast
Ethernet network to significantly boost bandwidth while using
conventional cabling and network cards.
*Note: When connected to a shared collision domain (such as a hub with
multiple workstations), each switched port may operate only in halfduplex mode.
2-2
Sample Applications
The TigerSwitch 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 for the
TigerSwitch 100 are described below.
Collapsed Backbone
The TigerSwitch 100 is an excellent choice for 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
100 to an Ethernet or Fast Ethernet hub or switch.
In the figure below, the TigerSwitch 100T (Model SMC6608T) is
operating as a collapsed backbone for a small LAN. It provides
dedicated 10 Mbps and 100 Mbps half-duplex connections to
workstations and 200 Mbps full-duplex connections to power
users and servers.
PLANNING
Figure 2-1. Collapsed Backbone
2-3
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