3Com 5017C, 5017C-LS User Manual
®
ONline 17-Slot System
Concentrator Installation and
Operation Guide
Document Number 17-00417-3
Printed March 1995
Model Numbers: 5017C-LS
5017C
5017C with load sharing
3Com Co rporation
118 Turnpik e Road
Southborough, MA 01772-1886
U.S.A.
(508) 460-8900
FAX (508) 460-8950
Federal Communications Commission
Notice
This equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment
in a residential area is likely to cause harmful interference, in which
case you must correct the interference at your own expense.
Canadian Emissions Requirements
This Class A digital apparatus meets all requirements of the
Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences
du Règlement sur le matériel brouilleur du Canada.
VDE Class B Compliance
Hiermit wird bescheinigt, dass der 5017C und 5017C-LS in
Üebereinstimmung mit den Bestimmungen der Vfg 243/1991
funkentstöert ist.
Der Deutschen Bundespost wurde das Inverkehrbringen dieses
Geraetes angezeigt und die Berechtigung zur Üeberprüefung der
Serie auf Einhaltung der Bestimmungen eingeräeumt.
Einhaltung mit betreffenden Bestimmugen kommt darauf an, dass
geschirmte Ausfuehrungen gebraucht werden. Fuer die
Beschaffung richtiger Ausfuehrungen ist der Betreiber
verantwortlich.
This is to certify that the 5017C and 5017C-LS are shielded against
radio interference in accordance with the provisions of Vfg
243/1991.
The German Postal Services have been advised that this equipment
is being placed on the market and that they have been given the
right to inspect the series for compliance with regulations.
Compliance with applicable regulations depends on the use of
shielded cables. The user is responsible for procuring the
appropriate cables.
EN55022/CISPR22 Compliance
This equipment conforms to the Class A emissions limits for a
digital device as defined by EN55022 (CISPR22).
VCCI Class 1 Compliance
This equipment is in the 1st Class category (information equipment
to be used in commercial or industrial areas) and conforms to the
standards set by the Voluntary Control Council for Interference by
Information Technology Equipment aimed at preventing radio
interference in commercial or industrial areas.
Consequently, when the equipment is used in a residential area or
in an adjacent area, radio interference may be caused to radio and
TV receivers, and so on.
Read the instructions for correc t handling .
UK General Approval Statement
The ONcore Switching Hub, ONline System Concentrator, and
ONsemble StackSystem Hub are manufactured to the International
Safety Standard EN 60950 and are approved in the UK under the
General Approval Number NS/G/12345/J/100003 for indirect
connection to the public telecomm unication network.
Disclaimer
The information in this document is subject to change without
notice and should not be construed as a commitment by 3Com
Corporation. 3Com Corporation assumes no responsibility for any
errors that may appear in this document.
Copyright State me nt
©
1995 by Chipcom Corporation , a subsidiar y of 3Com
Corporation. Printed in U.S.A. All rights reserved. The information
contained herein is the exclusive and confidential property of
3Com Corporation. No part of this manual may be disclosed or
reproduced in whole or in part without permission from 3Com
Corporation.
Trademarks
Because of the nature of this material, numerous hardware and
software products are mentioned by name. In most, if not all
cases, these product names are claimed as tradem arks by the
companies that manufacture the products. It is not our intent to
claim these names or trademarks as our own.
Artel, Chipcom, Ethermodem, Galactica, ONcore, ORnet,
StarBridge, and TriChannel are registered trademarks of Chipcom
Corporation, a subsidiary of 3Com Corporation.
Chipcom OpenHub, G-Man, LANsentry, MultiProbe, ONdemand,
ONline, ONsemble, PowerRing, SL2000, SL3000, SL4000,
StackJack, StackSystem, and SwitchCentral are trademarks of
Chipcom Corporation, a subsidiary of 3Com Corporation.
ii ONline 17-Slot System Concentrator Installation and Operation Guide
The Chipcom Multichannel Architecture Communications System is
registered under U.S. Patent Number 5,301,303.
UNIX is a registered trademark in the U.S.A. and other countries
licensed exclusively through X/Open Company, Ltd.
XNS is a trademark of Xerox Corporation.
DEC, DECnet, the Digital logo, DELNI, POLYCENTER, VAX, VT100,
and VT220 are trademarks of Digital Equipment Corporation.
3ComFacts, Ask 3Com, CardFacts, NetFacts, and CardBoard are
service marks of 3Com Corporation.
3Com, LANplex, BoundaryRouting, LanScanner, LinkBuilder,
NETBuilder, NETBuilderII, ParallelTasking, ViewBuilder, EtherDisk,
Etherl\Link, EtherLink Plus, EtherLink II, TokenLink, TokenLink Plus,
and TokenDisk are registered trademarks of 3Com Corporation.
3ComLaser Library, 3TECH, CacheCard, FDDILink, FMS, NetProbe,
SmartAgent, Star-Tek, and Transcend are trademarks of 3Com
Corporation.
CompuServe is a registered trademark of CompuServe, Inc.
3Com registered trademarks are registered in the United States,
and may or may not be registered in other countries. Other brand
and product names may be registered trademarks or trademarks of
their respective holders.
Restricted Rights
Use, duplication, or disclosure b y the G overnm ent is subject to
restrictions as set forth in subparagraph (c)(1) (ii) of the Rights in
Technical Data and Computer Software clause at
DFARS 252.227-7013.
Printed on recycle d paper.
ONline 17 -Slot System Concentrator Installation and Operation Guide iii
iv ONline 17-Slot System Concentrator Installation and Operation Guide
How to Use This Guide
Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Structure of This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Docume nt Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
3Com Doc uments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xvii
Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xvii
Chapter 1 — Introduction
Introducing the ONline System Concentrator . . . . . . . . . . . . . . . . . . . . . . .1-1
Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
ONline System Concentrator Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Modul ar Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
TriChannel Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Port-Switching Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Fault-Tolerance Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Backup Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Load Sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Backup Controller Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
Redun dant Cable Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
Backup Concentrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
Hot Swa pping of Media Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11
Synchronous Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12
Contents
Chapter 2 — Installation and Troubleshooting
Contents of the S hipping B ox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
FCC Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Site Se lection Consider ations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
ONline 17-Slot System Concentrator Installation and Operation Guide v
Location Requirement s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
Power Requirem ents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
Rack Mount Installati on Require ments . . . . . . . . . . . . . . . . . . . . . . . . .2-5
Table Top Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
Inst alling the Cable Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
Cabl e Tray Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
Cabl e Tray Table Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10
Installing the ONline System Concentrator . . . . . . . . . . . . . . . . . . . . .2-11
Rack Mounting the ONline System Concentrator . . . . . . . . . . . . .2-11
Table Top Mounting the ONline Concentrator . . . . . . . . . . . . . . .2-13
Inst alling the Backup Power Supply (Optional) . . . . . . . . . . . . . . . . . .2-14
Selecting the Power Supp ly Voltage . . . . . . . . . . . . . . . . . . . . . . . . . .2-17
Inst alling ONline Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-19
Connecting Network Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-19
Power Up and Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-20
Fan Operation Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-21
Power Supply Operation Verification . . . . . . . . . . . . . . . . . . . . . .2-21
Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-25
Where To G o F r om Here . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-26
Chapter 3 — Maintenance
Routine Maint enance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Replacing the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Replacing the Fan Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
ONline Module Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
Other System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
Appendix A — Specifications
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Regulatory Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
vi ONline 17-Slot System Concentrator Installation and Operation Guide
Appendix B — Slot Usage Chart
Appendix C — Technical Support
On-line Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1
Email Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C- 2
World Wide Web Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-2
Support from Your Network Supplier . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-2
Support from 3Com . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-3
Returning Products for Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-4
Accessing the 3 Com MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-4
3Com Tec hnical Publicat ions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-5
Index
ONline 17-Slot System Concentrator Installation and Operation Guide vii
viii ONline 17-Slot System Concentrator Installation and Operation Guide
Figures
Figure 1-1. Multiple 17-Slot Concentrator Environment . . . . . . . . . . . .1-2
Figure 1-2. ONline System Concentrator Rear View . . . . . . . . . . . . . . .1-3
Figure 1-3. ONline System Concentrator Front View . . . . . . . . . . . . . . .1-4
Figure 1-4. Modular ONline Configuration . . . . . . . . . . . . . . . . . . . . . .1-5
Figure 1-5. ONline System Concentrator Using Multiple Networks . . . .1-7
Figure 1-6. Redunda nt Cable Lin k Configuration . . . . . . . . . . . . . . . .1-10
Figure 1-7. Backup Concentrator Configuration . . . . . . . . . . . . . . . . .1-11
Figure 2-1. ONline System Concentrator Shipping Box Contents . . . . . .2-2
Figure 2-2. Rack Mount Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
Figure 2-3. Cable Tray Installation i n Rack . . . . . . . . . . . . . . . . . . . . .2-10
Figure 2-4. Attaching the Rack Mount Flanges . . . . . . . . . . . . . . . . . .2-12
Figure 2-5. Chassis Mounted in Rack . . . . . . . . . . . . . . . . . . . . . . . . .2-13
Figure 2-6. Removing Fan Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-14
Figure 2-7. U npluggi ng the Fan Unit . . . . . . . . . . . . . . . . . . . . . . . . .2-15
Figure 2-8. Power Su pply Conne ctors . . . . . . . . . . . . . . . . . . . . . . . . .2-16
Figure 2-9. Installing the B ackup Power Supply . . . . . . . . . . . . . . . . .2-16
Figure 2-10. Inst alled Backup Powe r Supply . . . . . . . . . . . . . . . . . . . . .2-17
Figure 2-11. Setting the Voltage Selector Switch . . . . . . . . . . . . . . . . .2-18
Figure 2-12. Networ k Cable Connectio ns . . . . . . . . . . . . . . . . . . . . . . .2-20
Figure 3-1. Removing the Power Su pply . . . . . . . . . . . . . . . . . . . . . . . .3-3
Figure 3-2. U npluggi ng the Power Supply . . . . . . . . . . . . . . . . . . . . . .3-4
Figure 3-3. Power Supply Plugs in ONline System Concentrator . . . . . .3-5
Figure 3-4. Backup Power Supply Install ed . . . . . . . . . . . . . . . . . . . . . .3-6
Figure 3-5. Removing the Fan Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
Figure 3-6. U npluggi ng the Fan Unit . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
Figure 3-7. Fan Unit Install ed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
ONline Ethernet 10BASE- FL Module Installation and O peration Guide ix
x ONline Ethernet 10BASE-FL Module Installation and Operation Guide
Tables
Table 2-1. Steps for Installing the ONline System Concentrator . . . . . .2-6
Table 2-2. Rack Mount Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
Table 2-3. Controller Module LEDs After Proper Power-Up . . . . . . . . .2-21
Table 2-4. Troubleshooting with Controller Module LEDs . . . . . . . . . .2-22
Table B-1. Concentrator Slot Usage Chart . . . . . . . . . . . . . . . . . . . . . .B-1
ONline Ethernet 10BASE- FL Module Installation and O peration Guide xi
How to Use This Guide
This guide explains how to install, operate, and manage the following
3Com ONli ne™ 17-Slot System Co ncentrators.
❑ 5017C
❑ 5017C with load sh aring
❑ 5017C-LS
Keep this guide near the ONline System Concentrator
Audience
This guide is intended for the following people at your site:
❑ Network manager or administrator
❑ Hardware installer
ONline 17-Slot System Concentrator Installation and Operation Guide xiii
Structure of This Guide
This guide contains the following chapters:
Chapter 1, Introduction – Introduces the principal features of the ONline
System Concentrator and provides a front and rear view of the unit.
Chapter 2, Installation and Troubleshooting – Provides illustrated
procedures for installin g and verify ing the operation of the 17-Slo t ONline
System Concentrator.
Chapter 3, Maintenance – Describes how to order and replace
serviceable parts on the ONline Syste m Concentrator. These parts include
the power supply, backup power supply, and fan units.
Appendix A, Specifications – Provides product dimensions, power
requirements, and other specifications for the unit.
Appendix B, Slot Usage Chart – Provides a chart to record informatio n
about which modules are installed in the 17 concentrator slots.
Appendix C - Technical Support – Lists the various methods for
contacting the 3Com technical support organization and for accessing
other product support services.
Index
ONline 17-Slot System Concentrator Installation and Operation Guide xiv
Document Conve ntions
The following document conventions are used in this manual:
Convention Indicates Example
Courier text User input In the Agent Information Form,
enter MIS in the New Contact
field.
System output After pressing the A pply
button, the sy stem displays
the message
Transmi tt in g da ta .
Bold command
string
Italic text in braces User-substituted
Capitalized text in
plain brackets
Italics Text emphasis,
Path names Before you begin, read the
identifiers
Keyboard entry
by the user
docu me nt titles
readme.txt file located in
/usr/snm/agents.
Use t he following command to
show port details:
SHOW PORT {
Type your password and press
[ENTER].
Ensure that you press the Apply
button after you add the new
search parameters.
slot
.all} VERBOSE
ONline 17-Slot System Concentrator Installation and Operation Guide xv
Convention Indicates Example
Note: A Note. The
Caution: A Caution. A
Warning: A Warning. A
Related Docu me nts
This section provides information on supporting documentation, including:
❑ 3Com Documents
information is
important
condition may
damage
software or
hardware
condition may
threaten
personal safety
Note: Use STP lobe
cables for yo ur s yste m.
Caution: Do not put
your installation
diskettes on a
magnetic surface.
This may damage the
diskettes.
Warning: Wear eye
protec tion when
performing these
maintenance
procedures.
❑ Reference Documents
xvi ONline 17-Slot System Concentrator Installation and Operation Guide
3Com Documents
The following documents provide additional information on 3Com
products:
17-Slot ONline System Concentrator Installation and Operation
Guide – Explains how to install, operate, and manage the 3Com ONline
17-Slot Syste m Concentrator (Models 5017 C-LS and 5017C with load
sharing) .
6-Slot ONline System Concentrator Installation and Operation
Guide – Explains how to install, operate, and m anage the 3Com ONline
6-Slot System Concentrator.
ONline To ken Ring Management Module User’s Guide – Explains how to
install, operate, and use the 3Com ONline Token Ring Management
Module.
ONline Management Commands Guide – Provides an alphabetized
reference resource describing all ONline management commands.
For a complete list of 3Com documents, contact your 3Com representative.
Reference Documents
The following documents supply related background information:
Case, J., Fedor, M., Scoffstall, M., an d J. Davin, The Simple Network
Management Protocol, RFC 1157, University of Tennessee at Knoxville,
Performance Systems International and the MIT Laboratory for Computer
Science, May 1990.
Rose, M., and K. McCloghrie , Structure and Identification of
Management Information for TCP/IP-based Internets, RFC 1155,
Performance Systems International and Hughes LAN Systems, May 1990.
ONline 17-Slot System Concentrator Installation and Operation Guide xvii
Introduction
1
This chapter briefly describes the cap abilities and operation of the 3Com
ONline™ System Concentrator. Chapter 2 provides important information
for installing modules and verifying their operation.
If you are uncertain about legal network configurations when using the
ONline System Concentrator, refer to the appropriate ONline media module
manual.
Introducing the ONline Sys tem Conc e ntrat or
The ONline System Concentrator is a modular, fault-tolerant pl atform for
facility networks. The concentra tor has a unique TriChannel® architecture
that allows it to run three network protocols concurrently. It is capable of
running Ethernet, Token Ring, and FDDI networks - all in the same
concentrator.
Ethernet connectivity is available on a variety of major cable types including:
❑ Fiber optic ca ble
❑ Unshielded and Shielded twisted pair wire
❑ Thin and Th ick coaxial cable
Introduction 1 - 1
Figure 1-1 shows a mod el syst em that i nclud es ea ch of thes e cable t ypes. I n
this diagram, an ONline Ethernet Repeater Module is connected to a
10BASE5 segment via an AUI cable and a transceiver. Also shown is the
physical connection between an ONline Ethernet Fiber Module and a
10BASE2 segment, via a fibe r cable, fiber media access unit, and IEEE
repeater. Unshielded and shielded twisted pair connections to-the-desk are
also included in this sample configuration.
Figure 1-1. Multiple 17-Slot Concentrator Enviro nment
Network segments attach to the concentrator through media modules you
install into the chassis. The ONline Controller Module, which provides
re-timing and re-transmission of received signals, must be installed in one of
the concentrator's seventeen slots. The remaining sixteen slots can be
configured with any combination of media modules.
1 - 2 ONline 17-Slot System Concentrator Installation and Operation Guide
Back Panel
A power supp ly and DC fan unit are installed when you receive your
concentrator. There is an On/O ff switch on the power supply. The power
supply should be powered down when you install or remove it. Note that
there is no need to power down the concentrator for installation or
removal of the media modules. Add itionally, you can repl ace the fan unit
with an optional backup power supply to provide power redundancy.
Figure 1-2. ONline System Concentrator Rear View
Front Panel
The concentrator is shipped with 15 blank faceplates and two empty slots.
The two slots are left empty because you must install the ONline Controller
Module and a t least one media module for the concentrator to be
functional. As you add media modules to your unit, remove blank
faceplates to provide additional slots for the new modules.
Introduction 1 - 3
Figure 1-3. ONline System Co ncentrator Front View
A cable tray is provided with the concentrator so that c ables you attach to
the media m odules can be run under the unit and out the back − where
they will not be in the way. A rack mount kit is also provided for the
concentrator and for the cable tray so you can rack mount the enti re unit.
ONline System Concentrator Features
This section describes the major features of the ONline System
Concentrator. The features include:
❑ Modular Desi gn
❑ TriChannel® Architecture
❑ Port-Switching Technology
❑ Fault-Tolerance Capabiliti es
❑ Hot Swapping of Media Modules
❑ Synchronous Backplane
1 - 4 ONline 17-Slot System Concentrator Installation and Operation Guide
Modular Design
The ONline Concentrator's modular design lets you add different media
modules (such as fiber, twisted pair, and coaxial) in any combination to
connect different types of media segments. A possible configuration is
shown in Figure 1-4. You can link segments of different protocols using
Token Ring, FDDI, bridging and routing modules.
Every concentrator requires one Controller Module that controls
communications between all modules. In addition, a Network
Management Module provides sophisticated monitoring and control of the
modules in the concentrator. As a rack-mounted unit, the ONline
Concentrator can be connected to patch panels to simplify and manage
your network cables.
Figure 1-4. Mod u lar ONline Config u ration
Introduction 1 - 5
TriChannel Architecture
The ONline System Concentrator's TriChannel architecture lets you run
Ethernet, Token Ring, and FDDI networks, al l in the same concentrator.
This allows a single ONline unit to do the work of three conventional hubs.
You can also run multiple Ethernet networks or mixture of Ethernet, Token
Ring, and FDDI networks in any combination you want. This architecture is
shown in Figure 1-5.
Any module you add to the concentrator can be assigned to any of three
networks on its backpl ane and can be easily moved to another backplane
network using either an on-board dip switch or remote network
management.
Additionally, any module can be set to “isolated” mode whereby it acts as
an isolated network - not connected to the concentrator backplane. This
mode lets you isolate users from the main network. This can be useful for
security or as a temporary situa tion to preve nt traffic from c ontaminating
the network (for example, if some users are conducting network tests or
running at very high loads.)
Port-Switching Technology
Available port-switching modules allow you to assign any port to any
backplane network using a network management command. This allows
you to perform moves, adds, and changes at the network console, saving
costly and time-consuming trips to the wiring closet. It also allows you to
get additional bandwidth on demand by switching users to lower volume
networks during peak traffic periods.
1 - 6 ONline 17-Slot System Concentrator Installation and Operation Guide
Figure 1-5. ON line System Co ncentrator Using Multiple Networks
Introduction 1 - 7
Loading...