Part No. 206378-A
June 1999
4401 Great America Parkway
Santa Clara, CA 95054
Installation and Reference for
the BayStack 60-12T/60-24T
10/100 Ethernet Hubs
Download from Www.Somanuals.com. All Manuals Search And Download.
Federal Communications Commission (FCC) Compliance Notice: Radio
Frequency Notice
Note: 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. If it is not installed and used in accordance with the instruction manual, it may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference, in which case users will be required to take whatever measures may be necessary to correct the
interference at their own expense.
EN 55 022 Statement
This is to certify that the Nortel Networks BayStack 60-12T and BayStack 60-24T 10/100 Ethernet Hubs are shielded
against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC,
Article 4a. Conformity is declared by the application of EN 55 022 Class A (CISPR 22).
Warning: This is a Class A product. In a domestic environment, this product may cause radio interference, in which
case, the user may be required to take appropriate measures.
EC Declaration of Conformity
This product conforms (or these products conform) to the provisions of Council Directive 89/336/EEC and 73/23/
EEC. The Declaration of Conformity is available on the Nortel Networks World Wide Web site at http://
libra2.corpwest.baynetworks.com/cgi-bin/ndCGI.exe/DocView/.
Voluntary Control Council for Interference (VCCI) Statement
206378-A
iii
Download from Www.Somanuals.com. All Manuals Search And Download.
Voluntary Control Council for Interference (VCCI) Statement
This is a Class A product based on the standard of the Voluntary Control Council for Interference by Information
Technology Equipment (VCCI). If this equipment is used in a domestic environment, radio disturbance may arise.
When such trouble occurs, the user may be required to take corrective actions.
Electromagnetic Interference (EMI) Statement
Canadian Department of Communications Radio Interference Regulations
This digital apparatus (BayStack 60-12T and BayStack 60-24T 10/100 Ethernet Hubs) do not exceed the Class A
limits for radio-noise emissions from digital apparatus as set out in the Radio Interference Regulations of the
Canadian Department of Communications.
Règlement sur le brouillage radioélectrique du ministère des
Communications
Cet appareil numérique (BayStack 60-12T and BayStack 60-24T 10/100 Ethernet Hubs) respecte les limites de bruits
radioélectriques visant les appareils numériques de classe A prescrites dans le Règlement sur le brouillage
radioélectrique du ministère des Communications du Canada.
iv
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Wichtige Sicherheitshinweise
1. Bitte lesen Sie diese Hinweise sorgfaltig durch.
2. Heben Sie diese Anleitung fur den spateren Gebrauch auf.
3. Vor jedem Reinigen ist das Gerat vom Stromnetz zu trennen. Verwenden Sie keine Flussigoder Aerosolreiniger.
Am besten eignet sich ein angefeuchtetes Tuch zur Reinigung.
4. Die Netzanschlu Bsteckdose soll nahe dem Gerat angebracht und leicht zuganglich sein.
5. Das Gerat ist vor Feuchtigkeit zu schutzen.
6. Bei der Aufstellung des Gerates ist auf sicheren Stand zu achten. Ein Kippen oder Fallenkonnte Beschadigungen
hervorrufen.
7. Die Beluftungsoffnungen dienen der Luftzirkulation, die das Gerat vor Uberhitzung schutzt. Sorgen Sie dafur,
daB diese Offnungen nicht abgedeckt werden.
8. Beachten Sie beim AnschluB an das Stromnetz die AnschluBwerte.
9. Verlegen Sie die NetzanschluBleitung so, daB niemand daruber fallen kann. Es sollte auchnichts auf der Leitung
abgestellt werden.
10. Alle Hinweise und Warnungen, die sich am Gerat befinden, sind zu beachten.
11. Wird das Gerat uber einen langeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetztrennen. Somit wird im
Falle einer Uberspannung eine Beschadigung vermieden.
12. Durch die Luftungsoffnungen durfen niemals Gegenstande oder Flussigkeiten in das Gerat gelangen. Dies konnte
einen Brand bzw. elektrischen Schlag auslosen.
13. Offnen sie niemals das Gerat. Das Gerat darf aus Grunden der elektrischen Sicherheit nur von authorisiertem
Servicepersonal geoffnet werden.
14. Wenn folgende Situationen auftreten ist das Gerat vom Stromnetz zu trennen und von einer qualifizierten
Servicestelle zu uberprufen:
(a) Netzkabel oder Netzstecker sind beschadigt.
(b) Flussigkeit ist in das Gerat eingedrungen.
(c) Das Gerat war Feuchtigkeit ausgesetzt.
(d) Wenn das Gerat nicht der Bedienungsanleitung entsprechend funktioniert oder Sie mit Hilfedieser Anleitung
keine Verbesserung erzielen.
(e) Das Gerat ist gefallen und/oder das Gehause ist beschadigt.
(f) Wenn das Gerat deutliche Anzeichen eines Defektes aufweist.
7. Zum NetzanschluB dieses Gerates ist eine geprufte Leitung zu verwenden. Fur einen Nennstrom bis 6A und
einem Gerategewicht groBer 3kg ist eine Leitung nicht leichter als H05VV-F, 3G, 0.75mm 2 einzusetzen.
Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635 Teil 1000 betragt 70dB(A) oder weniger.
206378-A
v
Download from Www.Somanuals.com. All Manuals Search And Download.
Nortel Networks NA Inc. Software License Agreement
NOTICE: Please carefully read this license agreement before copying or using the accompanying software or
installing the hardware unit with pre-enabled software (each of which is referred to as “Software” in this Agreement).
BY COPYING OR USING THE SOFTWARE, YOU ACCEPT ALL OF THE TERMS AND CONDITIONS OF
THIS LICENSE AGREEMENT. THE TERMS EXPRESSED IN THIS AGREEMENT ARE THE ONLY TERMS
UNDER WHICH NORTEL NETWORKS WILL PERMIT YOU TO USE THE SOFTWARE. If you do not accept
these terms and conditions, return the product, unused and in the original shipping container, within 30 days of
purchase to obtain a credit for the full purchase price.
1. License Grant. Nortel Networks NA Inc. (“Nortel Networks”) grants the end user of the Software (“Licensee”) a
personal, nonexclusive license: a) to use the Software either on a single computer or, if applicable, on a single
authorized device identified by host ID; b) to copy the Software solely for backup purposes in support of authorized use
of the Software; and c) to use and copy the associated user manual solely in support of authorized use of the Software
by Licensee. This license applies to the Software only and does not extend to Nortel Networks Agent software or other
Nortel Networks software products. Nortel Networks Agent software or other Nortel Networks software products are
licensed for use under the terms of the applicable Nortel Networks, Inc. Software License Agreement that accompanies
such software and upon payment by the end user of the applicable license fees for such software.
2. Restrictions on use; reservation of rights. The Software and user manuals are protected under copyright laws.
Nortel Networks and/or its licensors retain all title and ownership in both the Software and user manuals, including
any revisions made by Nortel Networks or its licensors. The copyright notice must be reproduced and included with
any copy of any portion of the Software or user manuals. Licensee may not modify, translate, decompile, disassemble,
use for any competitive analysis, reverse engineer, distribute, or create derivative works from the Software or user
manuals or any copy, in whole or in part. Except as expressly provided in this Agreement, Licensee may not copy or
transfer the Software or user manuals, in whole or in part. The Software and user manuals embody Nortel Networks’
and its licensors’ confidential and proprietary intellectual property. Licensee shall not disclose to any third party the
Software, or any information about the operation, design, performance, or implementation of the Software and user
manuals that is confidential to Nortel Networks and its licensors; however, Licensee may grant permission to its
consultants, subcontractors, and agents to use the Software at Licensee’s facility, provided they have agreed to use the
Software only in accordance with the terms of this license.
3. Limited warranty. Nortel Networks warrants each item of Software, as delivered by Nortel Networks and properly
installed and operated on Nortel Networks hardware or other equipment it is originally licensed for, to function
substantially as described in its accompanying user manual during its warranty period, which begins on the date
Software is first shipped to Licensee. If any item of Software fails to so function during its warranty period, as the sole
remedy Nortel Networks will at its discretion provide a suitable fix, patch, or workaround for the problem that may be
included in a future Software release. Nortel Networks further warrants to Licensee that the media on which the
Software is provided will be free from defects in materials and workmanship under normal use for a period of 90 days
from the date the Software is first shipped to Licensee. Nortel Networks will replace defective media at no charge if it
is returned to Nortel Networks during the warranty period along with proof of the date of shipment. This warranty
does not apply if the media has been damaged as a result of accident, misuse, or abuse. The Licensee assumes all
responsibility for selection of the Software to achieve Licensee’s intended results and for the installation, use, and
results obtained from the Software. Nortel Networks does not warrant a) that the functions contained in the software
will meet the Licensee’s requirements, b) that the Software will operate in the hardware or software combinations that
the Licensee may select, c) that the operation of the Software will be uninterrupted or error free, or d) that all defects
in the operation of the Software will be corrected. Nortel Networks is not obligated to remedy any Software defect that
cannot be reproduced with the latest Software release. These warranties do not apply to the Software if it has been (i)
altered, except by Nortel Networks or in accordance with its instructions; (ii) used in conjunction with another
vendor’s product, resulting in the defect; or (iii) damaged by improper environment, abuse, misuse, accident, or
negligence. THE FOREGOING WARRANTIES AND LIMITATIONS ARE EXCLUSIVE REMEDIES AND ARE
IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Licensee is responsible
for the security of its own data and information and for maintaining adequate procedures apart from the Software to
reconstruct lost or altered files, data, or programs.
vi
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
4. Limitation of liability. IN NO EVENT WILL NORTEL NETWORKS OR ITS LICENSORS BE LIABLE FOR
ANY COST OF SUBSTITUTE PROCUREMENT; SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES; OR ANY DAMAGES RESULTING FROM INACCURATE OR LOST DATA OR LOSS OF USE OR
PROFITS ARISING OUT OF OR IN CONNECTION WITH THE PERFORMANCE OF THE SOFTWARE, EVEN
IF NORTEL NETWORKS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT
SHALL THE LIABILITY OF NORTEL NETWORKS RELATING TO THE SOFTWARE OR THIS AGREEMENT
EXCEED THE PRICE PAID TO NORTEL NETWORKS FOR THE SOFTWARE LICENSE.
5. Government Licensees. This provision applies to all Software and documentation acquired directly or indirectly
by or on behalf of the United States Government. The Software and documentation are commercial products, licensed
on the open market at market prices, and were developed entirely at private expense and without the use of any U.S.
Government funds. The license to the U.S. Government is granted only with restricted rights, and use, duplication, or
disclosure by the U.S. Government is subject to the restrictions set forth in subparagraph (c)(1) of the Commercial
Computer Software––Restricted Rights clause of FAR 52.227-19 and the limitations set out in this license for civilian
agencies, and subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause of DFARS
252.227-7013, for agencies of the Department of Defense or their successors, whichever is applicable.
6. Use of Software in the European Community. This provision applies to all Software acquired for use within the
European Community. If Licensee uses the Software within a country in the European Community, the Software
Directive enacted by the Council of European Communities Directive dated 14 May, 1991, will apply to the
examination of the Software to facilitate interoperability. Licensee agrees to notify Nortel Networks of any such
intended examination of the Software and may procure support and assistance from Nortel Networks.
7. Term and termination. This license is effective until terminated; however, all of the restrictions with respect to
Nortel Networks’ copyright in the Software and user manuals will cease being effective at the date of expiration of the
Nortel Networks copyright; those restrictions relating to use and disclosure of Nortel Networks’ confidential
information shall continue in effect. Licensee may terminate this license at any time. The license will automatically
terminate if Licensee fails to comply with any of the terms and conditions of the license. Upon termination for any
reason, Licensee will immediately destroy or return to Nortel Networks the Software, user manuals, and all copies.
Nortel Networks is not liable to Licensee for damages in any form solely by reason of the termination of this license.
8. Export and Re-export. Licensee agrees not to export, directly or indirectly, the Software or related technical data
or information without first obtaining any required export licenses or other governmental approvals. Without limiting
the foregoing, Licensee, on behalf of itself and its subsidiaries and affiliates, agrees that it will not, without first
obtaining all export licenses and approvals required by the U.S. Government: (i) export, re-export, transfer, or divert
any such Software or technical data, or any direct product thereof, to any country to which such exports or re-exports
are restricted or embargoed under United States export control laws and regulations, or to any national or resident of
such restricted or embargoed countries; or (ii) provide the Software or related technical data or information to any
military end user or for any military end use, including the design, development, or production of any chemical,
nuclear, or biological weapons.
9. General. If any provision of this Agreement is held to be invalid or unenforceable by a court of competent
jurisdiction, the remainder of the provisions of this Agreement shall remain in full force and effect. This Agreement
will be governed by the laws of the state of California.NORTELShould you have any questions concerning this
Agreement, contact Nortel Networks, 4401 Great America Parkway, P.O. Box 58185, Santa Clara, California
95054-8185.
LICENSEE ACKNOWLEDGES THAT LICENSEE HAS READ THIS AGREEMENT, UNDERSTANDS IT, AND
AGREES TO BE BOUND BY ITS TERMS AND CONDITIONS. LICENSEE FURTHER AGREES THAT THIS
AGREEMENT IS THE ENTIRE AND EXCLUSIVE AGREEMENT BETWEEN NORTEL NETWORKS AND
LICENSEE, WHICH SUPERSEDES ALL PRIOR ORAL AND WRITTEN AGREEMENTS AND
COMMUNICATIONS BETWEEN THE PARTIES PERTAINING TO THE SUBJECT MATTER OF THIS
AGREEMENT. NO DIFFERENT OR ADDITIONAL TERMS WILL BE ENFORCEABLE AGAINST NORTEL
NETWORKS UNLESS NORTEL NETWORKS GIVES ITS EXPRESS WRITTEN CONSENT, INCLUDING AN
EXPRESS WAIVER OF THE TERMS OF THIS AGREEMENT.
206378-A
vii
Download from Www.Somanuals.com. All Manuals Search And Download.
viii
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Contents
Preface
Before You Begin ............................................................................................................. xv
Hard-Copy Technical Manuals .........................................................................................xvi
How to Get Help ..............................................................................................................xvi
Introduction
Product Features ............................................................................................................1-1
Product Description ........................................................................................................1-2
Autosense Capability ...............................................................................................1-2
Port Functions ...................................................................................................1-5
Port Partitioning ...........................................................................................1-5
MDI/MDI-X Button .............................................................................................1-6
Rear Panel ...............................................................................................................1-6
Hardware and Environmental Requirements ..................................................................1-6
Typical Applications
Mixed 10 Mb/s and 100 Mb/s Environment ....................................................................2-1
Basic Mixed Network ................................................................................................2-2
Expanded Mixed Network ........................................................................................2-3
Bridging ....................................................................................................................2-4
206378-A
ix
Download from Www.Somanuals.com. All Manuals Search And Download.
Package Contents ..........................................................................................................3-1
Connecting the Hub To Other Devices ...........................................................................3-3
Cable Types and MDI/MDI-X Modes ........................................................................3-3
Connecting the Hub Through the MDI Port ..............................................................3-5
Applying Power to the Hub .............................................................................................3-5
Verifying Port Status .................................................................................................3-6
Troubleshooting
Diagnosing Hub Indicators .......................................................................................4-2
Appendix A
Technical Specifications
Port Assignments .......................................................................................................... B-1
RJ-45 Ports ............................................................................................................. B-1
MDI/MDI-X Ports .............................................................................................. B-1
RJ-45 Pin Assignments .................................................................................... B-1
Cable Assignments ........................................................................................................ B-2
Index
x
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Figures
Figure 1-1. BayStack 60-12T Front Panel ..................................................................1-3
Figure 1-2. BayStack 60-24T Front Panel ..................................................................1-3
Figure 1-3. BayStack 60-12T/60-24T Rear Panel ......................................................1-6
Figure 2-1. Example of a Basic Mixed Network .........................................................2-2
Figure 2-2. Example of an Expanded Mixed Network ................................................2-3
Figure 2-3. Daisy-Chained Hubs ................................................................................2-4
Figure 3-1. Rack Mounted Hubs ................................................................................3-2
Figure 3-2. Port Status LEDs .....................................................................................3-6
Figure B-1. RJ-45 Pin Assignments ........................................................................... B-1
Figure B-2. Cable Schematics ................................................................................... B-2
206378-A
xi
Download from Www.Somanuals.com. All Manuals Search And Download.
xii
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Tables
Table 1-1.
LED Descriptions .....................................................................................1-4
Table 3-1.
Table 3-2.
Table 3-3.
Cables and MDI/MDI-X Modes for the BayStack 60-12T
Cables and MDI/MDI-X Modes for the BayStack 60-24T
Port Status LED Descriptions ..................................................................3-6
LED Indicators .........................................................................................4-2
Product Specifications ........................................................................... A-1
RJ-45 Pin Descriptions ........................................................................... B-2
Table 4-1.
Table A-1.
Table B-1.
206378-A
xiii
Download from Www.Somanuals.com. All Manuals Search And Download.
xiv
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Preface
Congratulations on your purchase of a BayStack™ 60-12T/60-24T 10/100
Ethernet Hub. The BayStack 60-12T/60-24T 10/100 Ethernet Hubs enable you to
migrate easily from Ethernet to Fast Ethernet. You can migrate to Fast Ethernet
while maintaining much of your existing Ethernet network and equipment.
In this guide, the BayStack 60-12T and BayStack 60-24T 10/100 Ethernet Hub
are referred to collectively as the BayStack 60-12T/60-24T 10/100 Ethernet Hub,
or just as the “hubs.” Each model is referred to specifically when features and
functions are unique to that particular model.
Before You Begin
This guide is intended for users with the following background:
•
•
•
Familiarity with network hardware and cable requirements
Experience in installing rack-mounted network hardware
Working knowledge of Ethernet (10 Mb/s, or 10BASE-T) and Fast Ethernet
(100 Mb/s, or 100BASE-T) operations
206378-A
xv
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
Hard-Copy Technical Manuals
You can print selected technical manuals and release notes free, directly from the
which you need documentation. Then locate the specific category and model or
version for your hardware or software product. Using Adobe Acrobat Reader, you
can open the manuals and release notes, search for the sections you need, and print
them on most standard printers. You can download Acrobat Reader free from the
You can purchase selected documentation sets, CDs, and technical publications
through the collateral catalog. The catalog is located on the World Wide Web at
support.baynetworks.com/catalog.html and is divided into sections arranged
alphabetically:
•
•
•
The “CD ROMs” section lists available CDs.
The “Guides/Books” section lists books on technical topics.
The “Technical Manuals” section lists available printed documentation sets.
How to Get Help
If you purchased a service contract for your Nortel Networks product from a
distributor or authorized reseller, contact the technical support staff for that
distributor or reseller for assistance.
If you purchased a Nortel Networks service program, contact one of the following
Nortel Networks Technical Solutions Centers:
Technical Solutions Center
Telephone Number
Billerica, MA
800-2LANWAN (800-252-6926)
800-2LANWAN (800-252-6926)
33-4-92-96-69-68
Santa Clara, CA
Valbonne, France
Sydney, Australia
Tokyo, Japan
61-2-9927-8800
81-3-5402-7041
xvi
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 1
Introduction
The BayStack 60-12T/60-24T 10/100 Ethernet Hubs provide 12 or 24 RJ-45 ports
for 10 Mb/s or 100 Mb/s Ethernet/Fast Ethernet connections. Ten or 100 Mb/s
traffic is determined by the autosensing capability of the RJ-45 ports in the
BayStack 60-12T/60-24T 10/100 Ethernet Hubs.
Design features of the BayStack 60-12T/60-24T 10/100 Ethernet Hubs provide a
user friendly interface, simplifying installation and network troubleshooting.
Product Features
The BayStack 60-12T/60-24T 10/100 Ethernet Hub provides the following
features:
•
12/24 autosensing 10/100 Mb/s Ethernet ports with internal switching/
bridging hardware
•
•
•
One MDI/MDI-X port, selected by a push button
Support for IEEE 802.3 10BASE-T and IEEE 802.3u 100BASE-TX standards
Transparent bridging between 10 Mb/s and 100 Mb/s segments through an
internal switch module
•
•
Support for autopartitioning and reconnection features to facilitate faulty
segment isolation
Polarity autodetection and autocorrection for 10 Mb/s segment UTP/STP
ports
•
•
•
Automatic jabber handling functions
Extensive front panel LEDs provide all information at a glance
Plug-and-play connection
206378-A
1-1
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
•
•
Up to 2 units can be daisy-chained (Class II Repeater)
Separates network traffic into two network collision domains (10Mb/s,
100Mb/s)
•
Store-and-forward packet transmission methods
Product Description
Package contents of the BayStack 60-12T/60-24T 10/100 Ethernet Hub include
materials for rack mounting and connecting the hubs, such as a rack mount kit and
an AC power cord. Standard Ethernet UTP or STP cables are not provided.
Autosense Capability
BayStack 60-12T/60-24T 10/100 Ethernet Hub ports automatically sense the
10 Mb/s or 100 Mb/s transmission speed of attached devices. Each port
automatically sends traffic through the route with the highest available
transmission speed, depending on the capability of the connected device. Traffic is
forwarded to the 10 or 100 Mb/s segment on the hub, again depending on the
incoming speed of the traffic. By confining traffic to its respective segments and
only forwarding traffic to the other segment when required, the overall load on the
network is significantly reduced.
Front Panel
The BayStack 60-12T/60-24T 10/100 Ethernet Hub includes front panel LEDs
and ports for connecting to other devices.
Figure 1-1 and Figure 1-2 show the front panels of the BayStack 60-12T 10/100
Ethernet Hub and BayStack 60-24T 10/100 Ethernet Hub, respectively. Table 1-1
on page 4 provides further details about the LEDs.
1-2
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Introduction
MDI/MDI-X
Button
10/100 Link/Activity and
Partition LEDs
60-12T Hub
MDIX/MDI
1
2
3
4
5
6
7
8
9
10
11
12
1
3
3
4
5
6
7
8
9
10
11
12
Utlization %
10M
10/100 Link/Activity
Collision
1
3
5
10
20
40>
Power On
100M
Partition
Power
LED
Collision and
Utilization LEDs
10BASE-T/100BASE-TX Ports
9239EA
Figure 1-1.
BayStack 60-12T Front Panel
MDI/MDI-X
Button
10/100 Link/Activity and
Partition LEDs
1
2
5
7
9
11
13
15
17
19
21
23
60-24T Hub
1
3
5
7
9
11
13
15
17
19
21
23
MDIX/MDI
10/100 Link/Activity
Partition
Utlization %
10M
10/100 Link/Activity
Partition
Collision
1
3
5
10
20
40>
Power On
100M
1
4
6
8
10
12
14
16
18
20
22
24
2
4
6
8
10
12
14
16
18
20
22
24
Power
LED
Collision and
Utilization LEDs
10BASE-T/100BASE-TX Ports
9246EA
Figure 1-2.
BayStack 60-24T Front Panel
206378-A
1-3
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
LEDs
This section describes the LEDs on the front panel of the
BayStack 60-12T/60-24T 10/100 Ethernet Hub. Table 1-1 describes the LEDs.
Table 1-1.
LED Descriptions
LED
Color
Activity
Indication
Power
Green
On
Power is supplied to the hub.
Utilization %
10 Mb/s
Green
Green
On
On
Data transmission is occurring on a 10 Mb/s network
segment at the indicated rate.
100 Mb/s
Data transmission is occurring on a 100 Mb/s network
segment at the indicated rate.
Collision
10 Mb/s
Yellow
Yellow
On
On
Data collision is occurring on a 10 Mb/s network segment.
100 Mb/s
Data collision is occurring on a 100 Mb/s network
segment.
10/100
Link/Activity
Yellow
On
The port is connected to a 10 Mb/s segment.
Data is being received to a 10 Mb/s segment.
The port is connected to a 100 Mb/s segment.
Blinking
On
Green
Yellow
Blinking
On
Data is being received to a 100 Mb/s segment.
Partitioning has occurred at a port.
Partition
The Link/Activity LEDs display whether a 10 Mb/s port
(yellow) or a 100 Mb/s port (green) is partitioned when the
yellow partition LED is lit for a specific port.
1-4
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Introduction
Port Functions
This section describes port partitioning and MDI/MDI-X modes. Partitioning is an
automatic function of BayStack 60-12T/60-24T 10/100 Ethernet Hub ports.
Certain ports can be configured to MDI/MDI-X mode with the MDI/MDI-X
button.
Port Partitioning
A port is automatically disabled by the hub when a serious error occurs, such as
continuous collisions on a single packet. This process is known as
autopartitioning. A partitioned port indicates an overloaded network or a
malfunctioning device on the network. When the port receives a valid packet from
the connected device, or is able to transmit a packet from the port, it automatically
releases the port so that it becomes active again.
•
Partitioning occurs at a 100 Mb/s port when there are 61 consecutive
collisions.
•
Partitioning occurs at a 10 Mb/s port when there are 32 consecutive collisions,
or when one collision lasting as long as 575.2us has occurred.
MDI/MDI-X Modes
Adapter cards in computers and workstations usually contain media-dependent
interface (MDI) ports, also called uplink ports. Most hub ports are configured as
media-dependent interfaces with built-in crossover ports, called MDI-X or normal
ports. By default, all BayStack 60-12T/60-24T 10/100 Ethernet Hub ports are set
to MDI-X, or normal, mode. You can connect your hub to computers and
workstations in MDI-X mode using a standard straight-through cable.
You need a crossover cable to connect your hub to other hubs, switches and
routers if you are using a hub port in normal, MDI-X, mode. You can use a
hub to the uplink mode.
You can configure port 1 on the BayStack 60-12T/60-24T 10/100 Ethernet Hub
from normal to uplink mode with the MDI/MDI-X button.
Refer to “Cable Types and MDI/MDI-X Modes” on page 3-3 for details regarding
which cable or mode to use for specific devices.
206378-A
1-5
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
MDI/MDI-X Button
Ethernet Hub from a normal (MDI-X) port to an uplink (MDI) port. Set the MDI/
MDI-X button to uplink (MDI) mode to connect your BayStack 60-12T/60-24T
10/100 Ethernet Hub to another Ethernet hub or switch using a standard
straight-through Ethernet cable.
Refer to “Cable Types and MDI/MDI-X Modes” on page 3-3 for details regarding
using straight-through or crossover cables to connect your BayStack 60-12T/
60-24T 10/100 Ethernet Hub to various network devices.
Rear Panel
The rear panel (Figure 1-3) of the BayStack 60-12T/60-24T 10/100 Ethernet Hub
includes a standard AC power cord receptacle.
9259EA
Figure 1-3.
BayStack 60-12T/60-24T Rear Panel
Hardware and Environmental Requirements
The following environmental and hardware specifications are required for proper
installation and function of your hub:
•
•
Power - 100 to 240 V AC (+/- 10 %), 50 to 60 Hz (+/- 3 Hz)
The hub should be located in a cool, dry place, with at least 10 cm (4 inches)
of space in front and behind the hub for ventilation.
•
•
•
Do not place the hub in direct sunlight. Keep the hub away from heat sources
or areas with high amounts of electromagnetic interference.
If you intend to mount the hub in a rack, make sure you have adequate
mounting screws, brackets, bolts, nuts, and appropriate tools.
Be sure you have all necessary network cables and connectors.
1-6
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2
Typical Applications
The BayStack 60-12T/60-24T 10/100 Ethernet Hubs provide flexibility in
configuring your network. You can use the hubs in a standalone configuration, or
in multiple hub configurations to utilize your existing Ethernet and Fast Ethernet
equipment. You can stack the hubs on top of each other on a flat surface, or mount
them in standard 19” equipment racks. In addition to attaching your hub to
workstations or printers, you can extend your current local area network (LAN) by
connecting a BayStack 60-12T/60-24T 10/100 Ethernet Hub to a collapsed
backbone device such as a switch or a router.
This chapter discusses various environments where you can use the BayStack
60-12T/60-24T 10/100 Ethernet Hub, such as environments which have a mixed
network of 10 Mb/s and 100 Mb/s devices.
Mixed 10 Mb/s and 100 Mb/s Environment
The BayStack 60-12T/60-24T 10/100 Ethernet Hub runs at both 10 Mb/s and
100 Mb/s simultaneously. Devices running at 10 Mb/s and devices running at
100 Mb/s are located on separate network segments within one BayStack 60-12T/
60-24T 10/100 Ethernet Hub. These two segments communicate with the internal
switching hardware, which is built in to the hub.
206378-A
2-1
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
Basic Mixed Network
Figure 2-1 shows a basic use of the BayStack 60-12T/60-24T 10/100 Ethernet
Hub in a simple mixed environment network. The hub connects various
workstations to each other. Workstations can be operating at 10 Mb/s and/or
100 Mb/s.
208-24T Hub
PCs
Power
Users
Key
10 Mb/s
100 Mb/s
9333EA
Figure 2-1.
Example of a Basic Mixed Network
The example shows a BayStack 60-24T 10/100 Ethernet Hub. However, you can
use a BayStack 60-12T 10/100 Ethernet Hub instead, depending on the number of
devices you need to connect.
2-2
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Typical Applications
Expanded Mixed Network
Figure 2-2 shows an expanded mixed network using two BayStack 60-24T 10/100
Ethernet Hubs connected to each other and to several devices. The devices use
10 Mb/s and 100 Mb/s speeds.
Power
users
Printers
208-24T Hub
208-24T Hub
Key
10 Mb/s
100 Mb/s
PCs
Power
user
Servers
9334EA
Figure 2-2.
Example of an Expanded Mixed Network
The example shows two BayStack 60-24T 10/100 Ethernet Hubs. However, you
can use two BayStack 60-12T 10/100 Ethernet Hubs instead, or one 12-port hub
and one 24-port hub, depending on the number of devices you need to connect.
206378-A
2-3
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
Figure 2-3 shows the specific ports used to connect two hubs, as in the expanded
network in Figure 2-2. Port 1 on the top hub is set to MDI (uplink) with the MDI/
MDI-X button. A UTP/STP Ethernet cable connects port 1 of the top hub to
another non-MDI port on the second hub. This type of connection is known as
“daisy-chaining.”
208-24T Hub
Set
to MDI
208-24T Hub
9336EA
Figure 2-3.
Daisy-Chained Hubs
Bridging
The internal switching hardware of the hub bridges the two collision domains, the
10 Mb/s and 100 Mb/s segments. The switching hardware handles the bridging,
which allows 10 Mb/s and 100 Mb/s segments to talk to each other.
2-4
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 3
Installation
You can stack the BayStack 60-12T/60-24T 10/100 Ethernet Hubs on a flat
surface, or mount them in a standard 19” equipment rack. This chapter explains
how to mount or stack your hubs, how to connect and power up the hub, and how
to troubleshoot hub operations. Before installing the hub, be sure your
environment meets the requirements defined in “Hardware and Environmental
Requirements” on page 1-6.
Package Contents
The contents of your product package should contain the following items:
•
One of the following BayStack 60 Series Hubs:
— BayStack 60-12T 10/100 Ethernet Hub (12 port 10/100 Mb/s hub)
— BayStack 60-24T 10/100 Ethernet Hub (24 port 10/100 Mb/s hub)
•
•
One mounting kit, including brackets and screws, for mounting the hub in a
standard 19” equipment rack
Appropriate power cord
206378-A
3-1
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
Installing the Hub
You can stack hubs on a flat surface or you can mount the hubs in a standard
19” equipment rack.
Mounting the Hub in a Standard 19” Equipment Rack
You can mount BayStack 60-12T/60-24T 10/100 Ethernet Hubs in a rack, such as
in a wiring closet or network center.
Figure 3-1 shows three hubs mounted in a standard rack.
1
2
P
owe
r
On
5
1
0
M
M
D
IX/M
D
I
Utlization
%
Collision
7
1
9
3
1
0
0
M
5
11
10
20
4
0
>
13
15
17
19
21
23
2
4
6
1
8
3
5
10
7
9
12
11
13
1
5
1
7
14
60-24T Hub
60-12T Hub
60-12T Hub
1
9
16
2
1
2
3
18
1
0
/1
rtition
/1 Link/Activity
rtition
0
0
Link/Activity
20
P
owe
r
On
22
1
0
M
M
D
IX/M
D
I
1
Utlization
%
24
Pa
Collision
4
6
8
1
10
3
1
0
0
M
12
5
10
00
14
10
1
20
16
4
0
>
2
18
20
Pa
3
22
24
4
5
6
7
8
9
10
11
12
1
3
3
4
5
6
7
8
P
owe
r
On
9
1
0
M
1
0
M
D
IX/M
D
I
Utlization
%
1
1
Collision
12
1
3
1
0
0
M
1
0
/1
0
0
Link/Activity
5
10
1
20
4
0
>
2
3
Partition
4
5
6
7
8
9
1
0
11
12
1
3
3
4
5
6
7
8
9
10
11
12
1
0
/1
0
0
Link/Activity
Partition
9241EA
Figure 3-1.
Rack Mounted Hubs
To mount hubs in a standard EIA 19” equipment rack:
1. Gather the brackets and screws included in the package that shipped
with your hub.
2. Attach one bracket to each of the front sides of the hub using a cross-head
screwdriver.
3. Align the front bracket holes with corresponding holes in the rack.
3-2
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation
4. Insert the screws into the front of the bracket, through the rack, so that
the screws extend past the rack.
5. Tighten the screws.
Connecting the Hub To Other Devices
You can connect hubs to other network devices through the dual-speed MDI/
MDI-X RJ-45 port on the front of the hub.
Cable Types and MDI/MDI-X Modes
printers, or servers. If you want to connect your BayStack 60-12T/60-24T 10/100
Ethernet Hub to routers, switches, and other hubs you must use a crossover cable
unless you set the MDI/MDI-X button to uplink. You can only configure port 1
with the MDI/MDI-X button.
Table 3-1 and Table 3-2 show which cable types and MDI/MDI-X modes to use
for various devices when connecting from the BayStack 60-12T 10/100 Ethernet
Hub or BayStack 60-24T 10/100 Ethernet Hub, respectively.
Table 3-1.
Hub Port
Cables and MDI/MDI-X Modes for the BayStack 60-12T 10/100 Ethernet
Hub
Connecting Device
Mode
Cable Type
1 through 12
1 through 12
1
PC, server
MDI-X (normal)
MDI-X (normal)
MDI (uplink)
Straight-through
Crossover
Hub, router, switch
Hub, router, switch
Straight-through
Table 3-2.
Cables and MDI/MDI-X Modes for the BayStack 60-24T 10/100 Ethernet
Hub
Hub Port
Connecting Device
Mode
Cable Type
1 through 24
1 through 24
1
PC, server
MDI-X (normal)
MDI-X (normal)
MDI (uplink)
Straight-through
Crossover
Hub, router, switch
Hub, router, switch
Straight-through
206378-A
3-3
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
Connecting the Hub Through a RJ-45 Port
You can connect a BayStack 60-12T/60-24T 10/100 Ethernet Hub to any device
that has a standard RJ-45 network interface port. To connect simple devices such
as workstations or servers, or more complex devices such as bridges or routers to
the hub, use a standard RJ-45 port.
To connect the hub to another device through a RJ-45 Port:
1. Make sure the devices you want to connect to contain 10BASE-T or
100BASE-T network interface cards.
2. Obtain one straight through shielded or unshielded twisted pair cable
(STP or UTP) with RJ-45 connectors at each end for each device.
•
•
Use 100 Ohm Category 3, 4, or 5 cable for 10 Mb/s Ethernet connections.
Use 100 Ohm Category 5 cable for 100 Mb/s Ethernet connections.
Category 5 cable is recommended for all connections to avoid confusion
between cables, and to provide for easy future migration of all devices to
Fast Ethernet.
•
Each cable must be 100 meters long or less.
3. Connect one RJ-45 connector of the cable to the network interface card
of your device.
4. Connect the other RJ-45 connector of the cable to any available MDI-X,
or normal, port on the hub.
By default, all ports on the BayStack 60-12T/60-24T 10/100 Ethernet Hub
except port 1 are MDI-X. The RJ-45 ports support both 10 Mb/s and
100 Mb/s Ethernet connections.
5. Be sure the tab on each RJ-45 connector clicks securely into position.
Warning: Do not connect a phone jack connector to a RJ-45 port. You may
damage the hub. Use only twisted pair Ethernet cables with RJ-45 connectors
that comply with FCC standards.
3-4
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation
Connecting the Hub Through the MDI Port
You can connect BayStack 60-12T/60-24T 10/100 Ethernet Hubs to other
compatible hubs or switches through port 1 on the front panel of the hub, setting
the MDI/MDI-X button to uplink.
To connect to another device through the MDI port:
1. Insert an RJ-45 connector of a straight-through twisted pair Ethernet
cable into port 1 of your hub.
You can configure port 1 to uplink or normal mode using the MDI/MDI-X
button.
2. Set the MDI/MDI-X button next to port 1 to MDI, or uplink.
3. Insert the other RJ-45 connector in to any MDI-X port on another device.
You can also connect this RJ-45 connector to a MDI port on another device set
up as a daisy-chain configuration.
Applying Power to the Hub
To apply power to your hubs:
1. Plug the power cord into the power socket in the rear of the hub.
2. Plug the other end of the power cord into a standard power outlet.
The hub will automatically select the setting that matches the connected input
voltage. No additional adjustments are necessary when you connect the hub to
any input voltage, as long as the voltage range is within the range marked on
the rear panel.
3. Check the Power LED on the front panel.
The Power LED should be on. The hub will perform a self-diagnostic test
during the power on process.
Note: The hub supports a “hot remove” feature which permits you to connect
or disconnect cables without powering off the hub. Operation of devices
attached to the hub is not disrupted.
206378-A
3-5
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
Verifying Port Status
You can check the status of each cable connection by viewing the port status
indicators shown in Figure 3-2 and described in Table 3-3.
1
2
5
7
9
1
1
13
15
17
19
21
23
60-24T Hub
1
3
5
7
9
1
1
13
15
17
19
21
23
M
D
IX/M
D
I
1
0
/1
rtition
/1 Link/Activity
rtition
0
0
Link/Activity
P
a
U
tliz
a
tion
%
1
0
M
10
00
Collision
1
3
5
10
20
4
0
>
P
ow
e
r
O
n
1
0
0
M
P
a
1
4
6
8
10
12
14
16
18
20
22
24
2
4
6
8
10
12
14
16
18
20
22
24
60-12T Hub
M
D
IX/M
D
I
1
2
3
4
5
6
7
8
9
10
1
1
12
1
3
3
4
5
6
7
8
9
10
1
1
12
U
tliz
a
tion
%
1
0
M
1
0
/1
0
0
Link/Activity
Collision
1
3
5
10
20
4
0
>
P
ow
e
r
O
n
1
0
0
M
Partition
23
60-24T Hu
1
3
5
7
9
11
13
15
17
19
21
23
10/100 Link/Activity
Partition
10/100 Link/Activity
Partition
1
4
6
8
10
12
14
16
18
20
22
24
24
60-12T Hu
12
1
3
3
4
5
6
7
8
9
10
11
12
10/100 Link/Activity
Partition
9247EA
Figure 3-2.
Port Status LEDs
Table 3-3 describes the light and color indications of port status LEDs.
Table 3-3.
LED
Port Status LED Descriptions
State
Indication
Power
On (green)
The hub is receiving power.
Collision
Activity
Flashing (yellow)
Flashing (green)
On (yellow)
A packet collision occurred in the 10/100 Mb/s domain.
The port is receiving 10/100 Mb/s traffic.
Partition
Link 10/100M
The port has been partitioned from the network.
On (green)
The port has established a valid 100 Mb/s network connection.
The port has established a valid 10 Mb/s network connection.
On (yellow)
3-6
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4
Troubleshooting
This chapter provides common testing methods, possible reasons for problems,
and possible steps to take to solve the problems.
Verifying System Operations
You can verify that all attached devices have valid connections. The hub monitors
the link status for each port. If a device is properly connected to the hub and if the
device is transmitting a link signal, the Link indicator will light up for the
corresponding port.
Follow these steps if the Link indicator fails to light when you connect a device to
the hub:
1. Verify that the twisted-pair cable is properly attached to the connected
device and the hub.
2. Verify that the media connector, or RJ-45 connector, snaps securely into
place when attached.
3. Verify that your cable is functioning properly. Try attaching the cable to
another port on another attached device that appears to be functioning
properly.
4. Check the length of each twisted-pair cable.
•
•
Each cable should be no longer than 100 meters, or 328 feet, long.
If you are using two cascaded Fast Ethernet hubs be sure the cable
between the two hubs is no longer than 5 meters, or 16 feet, long.
5. Verify that the attached workstation has a functioning adapter card.
Try the card in another workstation that is successfully connecting to the
network.
206378-A
4-1
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
Diagnosing Hub Indicators
You can easily monitor the hub through LED indicators on the front panel.
Table 4-1 describes common problems and possible solutions.
Table 4-1.
Symptom
LED Indicators
Cause
Solution
The Link 10/100 Mb/s A network interface, such as
indicator does not an adapter card on the
light up after making a attached device, a network
•
•
Verify that the hub and attached device are
powered on.
Be sure the cable is securely plugged into the
hub and the device.
Verify the proper cable length is being used.
Check the adapter or cable connections for
defects. Replace defective parts.
connection.
cable, or the hub port is
defective.
•
•
The Power indicator
does not light up
(green) after powering defective.
on.
A power outlet, power cord, or
internal power supply is
•
•
•
Check the power outlet by plugging in another,
properly functioning, device.
Check the power cord by plugging it into
another, properly functioning, device.
If you still do not have power, contact Customer
Support, as explained in “How to Get Help” on
page xvi for assistance.
The hub powers off
after running for a
time.
Loose connections, or power
surges or losses may have
occurred.
•
•
•
Check for loose power connections. Verify all
connections are seated securely.
Determine if power surges or losses occurred at
the power outlet.
Verify that the fan on the back of the hub is
unobstructed and running.
4-2
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Appendix A
Technical Specifications
Table A-1 provides technical information regarding product specifications, port
and cable assignments, and EMI certification.
Table A-1.
Item
Product Specifications
Description
Standards Conformance
Access Method
IEEE 802.3 Ethernet, IEEE 802.3u Fast Ethernet
CSMA/CD, 10 Mb/s, or 100 Mb/s
Communication Rate
Media Supported
10/100 Mb/s on RJ-45 ports
10 BASE-T - 100 Ohm Category 3, 4, 5 twisted pair
100 BASE-TX - 100 Ohm Category 5 twisted pair
Ports
•
•
12/24 10/100 Autosensing RJ-45 Ethernet ports
Port 1 can be set to normal (MDI -X) or uplink (MDI) mode
LED indicators
Port status, port link, port partition, collision, activity, 10/100 Mb/s
traffic, and power.
Dimensions
Weight
482.6 x 204 x 44 mm (19 x 8 x 1.72 inches)
2.1 kg (4.6 lb)
Input Power
Full range power input:
100 to 240 V AC
50 to 60 Hz
Power Consumption
Heat Dissipation
2.0 A max. @ 100-240 V AC
92.1 BTU/hr max. @ 100-240 V AC
0°C to 40°C (32°F to 104°F)
Operating Temperature
Operating Humidity
80% maximum humidity, noncondensing
206378-A
A-1
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
Table A-1.
Item
Product Specifications (continued)
Description
Certification
Emissions
CE Mark
FCC Class A,
VCCI Class A,
CISPR Class A,
BCIQ, AZ/NZS Class A
IEC 1000-4-2/3/4/6
Immunity
Safety
CSA/NRTL, TUV/GS, NOM, UL
Internal Switching Specifications
Network Bridging Function
Switching Method
Filtering, forwarding, and learning
Store-and-forward
8K entries
Address Table
Queue Buffer
512K bytes
Filtering Rate
Line speed
Forwarding Rate
Line speed
A-2
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Appendix B
Cable and Connector Information
Port Assignments
RJ-45 Ports
This section describes MDI/MDI-X modes and their associated ports, and
provides details regarding RJ-45 port pin assignments.
MDI/MDI-X Ports
You can attach the RJ-45 MDI-X ports on the hub to any device, such as routers,
servers, or workstations, that uses a standard network interface.
You can daisy-chain RJ-45 MDI ports on the hub to a port on similar networking
devices, such as switches or other hubs.
RJ-45 Pin Assignments
Figure B-1 shows the pin assignments in the RJ-45 connector.
1
8
87654321
Pin Assignments
RJ-45 male
connector
9242EA
Figure B-1.
RJ-45 Pin Assignments
206378-A
B-1
Download from Www.Somanuals.com. All Manuals Search And Download.
Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs
Table B-1 describes the pin assignments.
Table B-1.
Pin Number
RJ-45 Pin Descriptions
Assignment (Station Ports Assignment (Daisy-Chain Port,
1 through 12 or 24)
other Devices)
1
Input Receive Data +
Input Receive Data -
Output Transmit Data +
Output Transmit Data -
Not used
Output Transmit Data +
Output Transmit Data -
Input Receive Data +
Input Receive Data -
Not used
2
3
6
4, 5, 7, 8
Cable Assignments
You can use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable to
connect to RJ-45 ports.
Use the following cable categories, depending on the type of Ethernet
transmissions on your device.
•
•
10 BASE-T - 100 Ohm Category 3, 4, 5 twisted pair
100 BASE-TX - 100 Ohm Category 5 twisted pair
Figure B-2 shows schematics for straight-through and crossover twisted-pair
cables.
Straight-Through
(Hub) (Adapter)
Crossover
(Hub)
IRD+
IRD-
(Hub)
IRD+
1
2
IRD+
IRD-
1
2
3
6
OTD+
OTD-
IRD+
IRD-
1
2
1
2
3
6
IRD-
3 OTD+
OTD-
3 OTD+
6 OTD-
OTD+
OTD-
9243EA
6
Figure B-2.
Cable Schematics
B-2
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
Index
A
F
10 or 100 Mb/s only environments, 2-1
basic mixed network, 2-2
expanded mixed network, 2-3
mixed 10 and 100 Mb/s environments, 2-1
BayStack 60-24T 10/100 Ethernet Hub, 1-3
autopartitioning, 1-5
I
autosense capability, overview, 1-2
B
bridging, 2-4
L
C
LEDs
description, 1-4
cable schematics, B-2
port status descriptions, 3-6
port status overview, 3-6
M
compliance certifications, A-2
MDI port, 3-5
connections
MDI/MDI-X button, 1-6
power cord, 1-6, 3-5
with an MDI port, 3-5
modes
MDI/MDI-X, 1-5
normal, 1-5
uplink, 1-6
customer support, xvi
D
N
daisy-chain connection, 2-4
normal mode, 1-5
E
environmental requirements, 1-6
206378-A
Index-1
Download from Www.Somanuals.com. All Manuals Search And Download.
P
ports
RJ-45, B-1
uplink, 1-5
power, applying to hub, 3-5
product support, xvi
R
RJ-45 ports
connecting, 3-4
pin
assignments, B-1
descriptions, B-2
S
straight-through cable, 1-5
support, Nortel Networks, xvi
T
technical publications, xvi
technical support, xvi
U
uplink mode, 1-6
V
verifying system operations, 4-1
Index-2
206378-A
Download from Www.Somanuals.com. All Manuals Search And Download.
|