ETHERNET SWITCH MODULE
(3E02-04/3E05-04/3E07-04/3E08-04
AND 3E02-08-ATX)
USER GUIDE
OFFLINE
OFFLINE
QUAD IEEE 802.3 / ETHERNET 10BASET
SEGMENT 3SEGMENT 2 SEGMENT 1
LINK RX
COL TX
TX
LINK RX
COL TX
RX
TX
SEGMENT 4
LINK RX LINK RX PROC
COL TX
XXXX
QUAD IEEE 802.3 / ETHERNET 10BASE2
SEGMENT 4SEGMENT 3SEGMENT 2 SEGMENT 1
RX
TX
SEGMENT
OFFLINE
RX
TX
COL TX PWR
3X 4X 5X 6X 7X 8X2X1X
RX
RESET
PROCRX
PWR
OFFLINE
TX
LINK RX
COL TX
TXRX TXRX TXRX TXRX
OCTAL IEEE 802.3 / ETHERNET 10BASE-T
LINK
ACT
COL
12345678
TX
LINK RX
COL TX
PROC
PWR
SEGMENT 3SEGMENT 2 SEGMENT 1
QUAD IEEE 802.3 / ETHERNET AUI
SEGMENT 4SEGMENT 3SEGMENT 2 SEGMENT 1
RX
TX
QUAD IEEE 802.3 / ETHERNET 10BASE-FL
SEGMENT 4
LINK RX LINK RX
COL TX
RX
PROCRX
PWR
TX
PROC
COL TX
PWR
NOTICE
Cabletron Systems reserves the right to make changes in specifications and other information
contained in this document without prior notice. The reader should in all cases consult Cabletron
Systems to determine whether any such changes have been made.
The hardware, firmware, or software described in this manual is subject to change without notice.
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL,
INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING BUT
NOT LIMITED TO LOST PROFITS) ARISING OUT OF OR RELATED TO THIS MANUAL OR
THE INFORMATION CONTAINED IN IT, EVEN IF CABLETRON SYSTEMS HAS BEEN
ADVISED OF, KNOWN, OR SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH
DAMAGES.
Copyright 1996 by Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03866-5005
All Rights Reserved
Printed in the United States of America
Order Number: 9031873-01 May 1996
SPECTRUM
All other product names mentioned in this manual may be trademarks or registered trademarks of
their respective companies.
and
LANView
are registered trademarks of Cabletron Systems
Ethernet Switch Module User Guide i
Printed on Recycled Paper
Notice
FCC NOTICE
This device complies with Part 15 of the FCC rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
NOTE:
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 uses, generates, and can radiate radio frequency energy and if not installed in
accordance with the operator’s manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause interference in which case the user
will be required to correct the interference at his own expense.
WARNING:
party responsible for compliance could void the user’s authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class A digital
Changes or modifications made to this device which are not expressly approved by the
DOC NOTICE
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital
apparatus set out in the Radio Interference Regulations of the Canadian Department of
Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables
aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique
édicté par le ministère des Communications du Canada.
VCCI NOTICE
This equipment is in the 1st Class Category (information equipment to be used in commercial and/or
industrial areas) and conforms to the standards set by the Voluntary Control Council for Interference
by Information Technology Equipment (VCCI) aimed at preventing radio interference in commercial
and/or industrial areas.
Consequently , when used in a residential area or in an adjacent area thereto, radio interference may be
caused to radios and TV receivers, etc.
Read the instructions for correct handling.
ii Ethernet Switch Module User Guide
Notice
CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT
IMPORTANT:
This document is an agreement between you, the end user, and Cabletron Systems, Inc. (“Cabletron”)
that sets forth your rights and obligations with respect to the Cabletron software program (the
“Program”) contained in this package. The Program may be contained in firmware, chips or other
media. BY UTILIZING THE ENCLOSED PRODUCT, YOU ARE AGREEING TO BECOME
BOUND BY THE TERMS OF THIS AGREEMENT, WHICH INCLUDES THE LICENSE AND
THE LIMITATION OF WARRANTY AND DISCLAIMER OF LIABILITY. IF YOU DO NOT
AGREE TO THE TERMS OF THIS AGREEMENT, PROMPTLY RETURN THE UNUSED
PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND.
Before utilizing this product, carefully read this License Agreement.
CABLETRON SOFTWARE PROGRAM LICENSE
1. LICENSE
package subject to the terms and conditions of this License Agreement.
You may not copy, reproduce or transmit any part of the Program except as permitted by the
Copyright Act of the United States or as authorized in writing by Cabletron.
2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, or disassemble the
Program.
3. APPLICABLE LA W. This License Agreement shall be interpreted and governed under the laws
and in the state and federal courts of New Hampshire. You accept the personal jurisdiction and
venue of the New Hampshire courts.
. You have the right to use only the one (1) copy of the Program provided in this
EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY
1. EXCLUSION OF
writing, Cabletron makes no warranty, expressed or implied, concerning the Program (including
its documentation and media).
CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE SUPPLIED TO
YOU BY CABLETRON IN WRITING, EITHER EXPRESSED OR IMPLIED, INCLUDING
BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE
ACCOMPANYING WRITTEN MA TERIALS, AND ANY ACCOMPANYING HARDW ARE.
2. NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL
CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER
(INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS,
PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, SPECIAL,
INCIDENTAL, CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHER LOSS)
ARISING OUT OF THE USE OR INABILITY TO USE THIS CABLETRON PRODUCT,
EVEN IF CABLETRON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES. BECAUSE SOME STATES DO NOT ALLOW THE EXCLUSION OR
LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR
ON THE DURATION OR LIMITATION OF IMPLIED WARRANTIES, IN SOME
INSTANCES THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO
YOU.
WARRANTY. Except as may be specifically provided by Cabletron in
Ethernet Switch Module User Guide iii
Notice
UNITED STATES GOVERNMENT RESTRICTED RIGHTS
The enclosed product (a) was developed solely at private expense; (b) contains “restricted computer
software” submitted with restricted rights in accordance with Section 52227-19 (a) through (d) of the
Commercial Computer Software - Restricted Rights Clause and its successors, and (c) in all respects
is proprietary data belonging to Cabletron and/or its suppliers.
For Department of Defense units, the product is licensed with “Restricted Rights” as defined in the
DoD Supplement to the Federal Acquisition Regulations, Section 52.227-7013 (c) (1) (ii) and its
successors, and use, duplication, disclosure by the Government is subject to restrictions as set forth in
subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at 252.227-
7013. Cabletron Systems, Inc., 35 Industrial Way, Rochester, New Hampshire 03867-0505.
iv Ethernet Switch Module User Guide
CONTENTS
CHAPTER 1 INTRODUCTION
1.1 Document Conventions...............................................................1-2
1.2 Related Manuals..........................................................................1-3
1.3 Getting Help.................................................................................1-3
1.4 General Description.....................................................................1-4
1.5 3E02-04 Ethernet Switch Module................................................1-5
1.5.1 Connectors .....................................................................1-6
1.5.2 LEDs...............................................................................1-6
1.5.3 Offline Button..................................................................1-6
1.6 3E07-04 Ethernet Switch Module................................................1-6
1.6.1 Connectors .....................................................................1-7
1.6.2 LEDs...............................................................................1-7
1.6.3 Offline Button..................................................................1-7
1.7 3E08-04 Ethernet Switch Module................................................1-7
1.7.1 Connectors .....................................................................1-8
1.7.2 LEDs...............................................................................1-8
1.7.3 Offline Button..................................................................1-8
1.8 3E05-04 Ethernet Switch Module................................................1-8
1.8.1 Connectors .....................................................................1-8
1.8.2 LEDs...............................................................................1-9
1.8.3 Offline Button..................................................................1-9
1.9 3E02-08-ATX Ethernet Switch Module........................................1-9
1.9.1 Connectors .....................................................................1-9
1.9.2 LEDs.............................................................................1-10
1.9.3 Offline Button................................................................1-10
CHAPTER 2 CONNECTING TO THE NETWORK
2.1 Introduction..................................................................................2-1
2.2 Power-up LED Sequence............................................................2-1
2.3 Connecting to a Network.............................................................2-2
2.3.1 Connecting the 3E02-04 Ethernet Switch Module..........2-3
2.3.2 Connecting the 3E07-04 Ethernet Switch Module..........2-3
2.3.3 Connecting the 3E08-04 Ethernet Switch Module..........2-4
2.3.4 Connecting the 3E05-04 Ethernet Switch Module..........2-5
2.3.5 Connecting the 3E02-08-ATX Ethernet Switch Module.. 2-6
Ethernet Switch Module User Guide v
Contents
CHAPTER 3 CONFIGURING
3.1 Introduction ..................................................................................3-1
3.2 Connecting the Local Console Manager......................................3-2
3.3 LCM Commands..........................................................................3-2
CHAPTER 4 MONITORING
4.1 Displaying Port Status..................................................................4-1
4.1.1 Status Command.............................................................4-1
CHAPTER 5 DIAGNOSTICS AND TROUBLESHOOTING
5.1 Power-up Diagnostics..................................................................5-1
5.1.1 Power-up Tests...............................................................5-1
5.1.2 Power-Up Results ...........................................................5-1
5.2 Operational Diagnostics...............................................................5-3
5.2.1 Diagnostic Results...........................................................5-4
5.3 Troubleshooting ...........................................................................5-4
5.3.1 If The Module Fails To Power Up....................................5-4
5.3.2 Connectivity Problems.....................................................5-5
CHAPTER 6 ADDING/SWAPPING MODULES
6.1 Unpacking The Ethernet Switch Module......................................6-1
6.2 Adding An Ethernet Switch Module .............................................6-1
6.3 Swapping An Ethernet Switch Module.........................................6-2
APPENDIX A TECHNICAL SPECIFICATIONS
APPENDIX B CABLES
B.1 Types/Connectors....................................................................... B-1
B.2 Cable Specifications ...................................................................B-1
B.3 10BASE-T Pin Assignments....................................................... B-3
B.3.1 Crossover Wiring............................................................ B-4
B.3.2 Straight-Through Wiring.................................................. B-5
B.4 AUI Pin Assignments.................................................................. B-5
B.5 5 - 4 - 3 Rule ............................................................................... B-6
B.5.1 Definitions.......................................................................B-7
INDEX
vi Ethernet Switch Module User Guide
CHAPTER 1
INTRODUCTION
This manual is for system administrators responsible for configuring,
monitoring and maintaining the ATX. It should be used with the
Guide
are described below.
and the
ATX MIB Reference Guide
. The contents of each chapter
ATX User
• Chapter 1,
modules.
• Chapter 2,
attach a module to an Ethernet network.
• Chapter 3,
for the modules.
• Chapter 4,
statistics obtained via LCM.
• Chapter 5,
possible problems with the modules.
• Chapter 6,
and replacing an Ethernet module.
• Appendix A,
information about the modules.
Introduction
Connecting to the Network
Configuring
Monitoring
Diagnostics and Troubleshooting
Adding/Swapping Modules
Technical Specifications
, provides a general description of the
, discusses the software configuration options
, provides information on Ethernet port
, describes how to physically
, discusses identifying
, gives instructions for adding
, lists the pertinent technical
• Appendix B,
modules.
Ethernet Switch Module User Guide Page 1-1
Cables
, lists pertinent cabling information about the
Chapter 1:
Introduction
1.1 DOCUMENT CONVENTIONS
The following conventions are used in presenting information in this
manual:
Commands, prompts, and information displayed by the computer appear
in Courier typeface:
Current Number of Station Addresses: 5
Current Number of Learned Addresses: 133
Number of Defined Filters: 4
Information that you enter appears in Courier bold typeface:
ATX >
status
Information that you need to enter with a command is enclosed in angle
brackets <>. For example, you must enter a MAC address to execute the
address matrix
ATX >
address matrix 00:40:27:04:1a:0f
<MAC address> command:
Field value options appear in bold typeface. F or e xample, a filter type can
be either
NOTE
TIP
Entry
or
Exit
.
Note
symbol. Calls the reader’s attention to any item of
information that may be of special importance.
Tip
symbol. Conveys helpful hints concerning procedures or
actions.
!
CAUTION
Caution
damage to the equipment.
Warning
equipment damage, personal injury or death.
symbol. Contains information essential to avoid
symbol. Warns against an action that could result in
Page 1-2 Ethernet Switch Module User Guide
Related Manuals
1.2 RELATED MANUALS
You may need to refer to the following documentation when you are using
the Ethernet module:
•
ATX User Guide
for the ATX.
•
ATX MIB Reference Guide
enterprise MIB.
If you need internetworking reference material, you may find the
following books helpful:
•
Interconnections, Bridges and Routers,
Wesley
•
Internetworking with TCP/IP: Protocols, and Architecture
1992.
edition), Volumes I and II, Douglas Comer, Prentice Hall
– contains installation and configuration instructions
– describes the use of Cabletron’s
Radia Perlman, Addison
(2nd
1991.
•
The Simple Book, An Introduction to Management of TCP/IP-based
Internets,
Marshall T. Rose, Prentice Hall 1991.
1.3 GETTING HELP
If you need additional support related to this device, or if you have any
questions, comments, or suggestions concerning this manual, contact
Cabletron Systems Technical Support:
By phone (603) 332-9400
A.M
Monday – Friday; 8
By CompuServe GO CTRON from any ! prompt
By Internet mail support@ctron.com
By FTP ctron.com (134.141.197.25)
Login
Password
anonymous
your email address
. – 8 P.M. Eastern T ime
Ethernet Switch Module User Guide Page 1-3
Chapter 1:
Introduction
1.4 GENERAL DESCRIPTION
Cabletron Systems Ethernet Switch Modules connect the ATX to a
maximum of four individual Ethernet IEEE 802.3 LANs. The Ethernet
Switch Module (3E02-08-ATX) connects to a maximum of eight Ethernet
IEEE 802.3 LANs.
Both module types enable connectivity to FDDI, Token Ring, and
Ethernet networks, and can be configured to support Transparent
Spanning Tree, Source Routing, or Source Routing Transparent Bridging
on each of the ports. The ATX can translate higher le vel protocols to allo w
communication between end-nodes on Ethernet as well as FDDI or Token
Ring. Protocols translated include TCP/IP, Novell NetWare, and
AppleTalk Phase II.
The four port Ethernet Switch Module is available in four versions to
support various cabling types:
• 3E02-04: provides four Unshielded Twisted Pair (UTP) connections
• 3E07-04: provides four thin coaxial cable connections
• 3E08-04: provides four multimode fiber optic connections
• 3E05-04: provides four Attachment Unit Interface (AUI) connections
The 3E02-08-ATX module provides eight UTP connections.
The Ethernet Switch Modules include processing circuitry for receiving
and forwarding data packets between the connected devices. Each module
contains an offline button and se veral LEDs that indicate the module’s and
individual ports’ operational status.
The four port modules may be installed in any of the five interface slots
and the ATX can simultaneously support up to five Ethernet Switch
Modules.
The 3E02-08-ATX module may be installed in any of the five interface
slots in a ATX, and the ATX can simultaneously support up to five eight
port modules. Each module provides connectivity to the multiple LANs.
Page 1-4 Ethernet Switch Module User Guide
3E02-04 Ethernet Switch Module
Each module provides connectivity to the multiple LANs. Since packets
are bridged/routed across Ethernet Switch Modules only when it is
necessary to reach the end device, each four port module can support four
distinct 10 Mbps LANs, while the eight port module supports eight
distinct 10 Mbps LANs.
RESET
TM
PACKET PROCESSING ENGINE
QUAD IEEE 802.3 / ETHERNET 10BASE2
SEGMENT 4SEGMENT 3SEGMENT 2 SEGMENT 1
PROCRX
RXTXRXTXRX
PWR
TX
TX
OFFLINE
FastNET ATX
SEGMENT
OFFLINE
OFFLINE
OFFLINE
TX RX
FDDI MIC A FDDI MIC BOPTICAL BYPASS
MULTI-MODE MULTI-MODE
OFFLINE
OFFLINE
POWER STATUS
ENGINE STATUS
NMS PORT
3X 4X 5X 6X 7X 8X2X1X
RING 1
RX ST
TX 16 TX 16 TX 16 TX 16 PWR
TX
RX
LK
TX
RING 2
RX ST
TX
RX
LK
TX RX TX RX TX RX
RX
TX
TURBO STATUS
POWER
OCTAL IEEE 802.3 / ETHERNET 10BASE-T
LINK
ACT
COL
12345678
QUAD IEEE 802.5 TOKEN RING (UTP)
RING 3
RX ST
QUAD FAST ETHERNET / 802.3 100BASE-FX
SEGMENT 4SEGMENT 3SEGMENT 2 SEGMENT 1
TX
RX
LK
QUAD IEEE 802.3 / ETHERNET 10BASE2
SEGMENT 4SEGMENT 3SEGMENT 2 SEGMENT 1
RX
TX
SUPPLY A
SUPPLY B
RX ST PROC
TX
RX
LK
INTELLIGENT FDDI
RING A
RING B
RX
TX
1.6 Gbps
PROC
PWR
RING 4
PROC
PWR
THRU
PROC
WRAP
RX
TX PWR
PROCRX
PWR
Figure 1-1 ATX Front Panel
1.5 3E02-04 ETHERNET SWITCH MODULE
The 3E02-04 (Figure 1-2) provides connection for four independent
10BASE-T LANs to the ATX backplane and packet processing module. It
includes processing circuitry for receiving and forwarding packets
between the connected 10BASE-T LANs. The module provides several
LEDs to indicate the module’s operational status.
The module supports twisted pair Ethernet and the IEEE 802.3
10BASE-T specification.
Ethernet Switch Module User Guide Page 1-5
Chapter 1:
Introduction
1.5.1 Connectors
The 3E02-04 includes eight 8-pin RJ45 ports for attachment directly to
the network through UTP cabling. The ATX power supply provides the
power for the module.
An internal receive/transmit pair crossover is provided in the
NOTE
second connector (far right, marked with an X) on each port.
This means that when either a station or server is directly
attached to a 3E02-04 port, you can choose to use either
straight-through or crossover cabling. For more cabling and
crossover information, see Appendix B.
1.5.2 LEDs
The 3E02-04 provides a total of 18 green LEDs labeled LNK, COL, RX
and TX for each segment, plus PROC and PWR for the module. The
LEDs are described in Chapter 5,
this manual.
Diagnostics and Troubleshooting
, of
1.5.3 Offline Button
Use the offline button before swapping the module, to take it offline until
the replacement is installed.
QUAD IEEE 802.3 / ETHERNET 10BASET
LINK RX LINK RX PROC
COL TX
SEGMENT 4
COL TX PWR
XXXX
OFFLINE
LINK RX
COL TX
LINK RX
COL TX
SEGMENT 3SEGMENT 2 SEGMENT 1
Figure 1-2 3E02-04 Module Front Panel
1.6 3E07-04 ETHERNET SWITCH MODULE
The 3E07-04 (Figure 1-3) provides connection for four independent
10BASE2 LANs to the ATX backplane and packet processing module. It
includes processing circuitry for receiving and forwarding packets
between the connected 10BASE2 LANs. The 3E07-04 contains several
LEDs to indicate the module’s operational status.
The 3E07-04 supports thin coaxial cable Ethernet and the IEEE 802.3
10BASE2 specification.
Page 1-6 Ethernet Switch Module User Guide
3E08-04 Ethernet Switch Module
1.6.1 Connectors
The 3E07-04 includes four pairs of BNC barrel connectors for thin
coaxial cabling. Each of the four segments provides an internal BNC
T-connector, therefore an external T-connector is not required. The ATX
power supply provides the power for the module.
1.6.2 LEDs
The 3E07-04 contains a total of 10 green LEDs labeled RX and TX for
each segment, plus PROC and PWR for the module. The LEDs are
described in Chapter 5 of this manual.
1.6.3 Offline Button
Use the offline button before swapping the module, to take it offline until
the replacement is installed.
QUAD IEEE 802.3 / ETHERNET 10BASE2
SEGMENT 4SEGMENT 3SEGMENT 2 SEGMENT 1
RX
PROCRX
PWR
TX
OFFLINE
RX
TX
TX
RX
TX
Figure 1-3 3E07-04 Front Panel
1.7 3E08-04 ETHERNET SWITCH MODULE
The 3E08-04 (Figure 1-4) provides connection for four independent
multimode 10BASE-FL LANs to the ATX backplane and packet
processing module. It includes processing circuitry for receiving and
forwarding packets between the connected 10BASE-FL LANs. The
3E08-04 contains several LEDs to indicate the module’s operational
status.
The 3E08-04 supports Ethernet and the IEEE 802.3 10BASE-FL
specification.
Ethernet Switch Module User Guide Page 1-7
Chapter 1:
Introduction
1.7.1 Connectors
The 3E08-04 includes four pairs of fiber optic ST connectors for fiber
optic cabling. Receive (RX) and transmit (TX) connectors are clearly
marked on the front panel of the module. The ATX power supply provides
the power for the module.
1.7.2 LEDs
The 3E08-04 contains a total of 18 green LEDs labeled LNK, COL, RX
and TX for each segment, plus PROC and PWR for the module. The
LEDs are described in Chapter 5 of this manual.
1.7.3 Offline Button
Use the offline button before swapping the module, to take it offline until
the replacement is installed.
QUAD IEEE 802.3 / ETHERNET 10BASE-FL
LINK RX LINK RX
COL TX
SEGMENT 4
COL TX
PROC
PWR
OFFLINE
LINK RX
COL TX
TXRX TXRX TXRX TXRX
LINK RX
COL TX
SEGMENT 3SEGMENT 2 SEGMENT 1
Figure 1-4 3E08-04 Front Panel
1.8 3E05-04 ETHERNET SWITCH MODULE
The 3E05-04 (Figure 1-5) provides connection for four independent
Ethernet IEEE 802.3 LANs to the ATX backplane and packet processing
module. It includes processing circuitry for receiving and forwarding
packets between the connected LANs. The 3E05-04 contains several
LEDs to indicate the module’s operational status.
The 3E05-04 supports Ethernet version 2 and the IEEE 802.3
specification.
1.8.1 Connectors
The 3E05-04 includes four DB15 AUI connectors which you can connect
to an AUI drop cable or to a transceiver attached to a LAN.
Page 1-8 Ethernet Switch Module User Guide
3E02-08-ATX Ethernet Switch Module
1.8.2 LEDs
The 3E05-04 contains a total of 10 green LEDs labeled RX and TX for
each segment, plus PROC and PWR for the module. The LEDs are
described in Chapter 5 of this manual.
1.8.3 Offline Button
Use the offline button before swapping the module, to take it offline until
the replacement is installed.
QUAD IEEE 802.3 / ETHERNET AUI
SEGMENT 4SEGMENT 3SEGMENT 2 SEGMENT 1
RX
PROCRX
PWR
TX
RESET
RX
TX
TX
RX
TX
Figure 1-5 3E05-04 Front Panel
1.9 3E02-08-ATX ETHERNET SWITCH MODULE
The 3E02-08-ATX (Figure 1-6) provides connection for eight
independent 10BASE-T LANs to the ATX. It includes processing
circuitry for receiving and forwarding packets between the connected
10BASE-T LANs. The 3E02-08-ATX contains several LEDs to indicate
the module’s operational status.
The 3E02-08-ATX supports UTP cabling and the IEEE 802.3 10BASE-T
specification.
1.9.1 Connectors
The 3E02-08-ATX includes eight 8-pin RJ45 receptacle connectors with
built-in crossover that you can attach directly to the network using
unshielded twisted pair (UTP) cabling. The ATX power supply provides
the power for the module.
An internal receive/transmit pair crossover is provided within
NOTE
each port. This means that depending on whether crossover is
provided on the device y ou’re connecting to, you can use either
crossover or straight-through UTP cable to connect a device to
a port. For more cabling and crossover information, see
Appendix B.
Ethernet Switch Module User Guide Page 1-9
Chapter 1: Introduction
1.9.2 LEDs
The 3E02-08-ATX contains a total of 26 green LEDs labeled LINK, A CT,
COL for each segment, plus PROC and PWR for the module. The LEDs
are described in Chapter 5 of this manual.
1.9.3 Offline Button
Use the offline button before swapping the module, to take it offline until
the replacement is installed.
OFFLINE
SEGMENT
3X 4X 5X 6X 7X 8X2X1X
OCTAL IEEE 802.3 / ETHERNET 10BASE-T
LINK
ACT
COL
12345678
Figure 1-6 3E02-08-ATX Front Panel
PROC
PWR
Page 1-10 Ethernet Switch Module User Guide
CHAPTER 2
CONNECTING TO THE NETWORK
2.1 INTRODUCTION
This chapter provides reference material and instructions for a network
administrator configuring the Ethernet Switch Modules.
For instructions on adding a module to the ATX, see Chapter 6,
Adding/Swapping Modules.
2.2 POWER-UP LED SEQUENCE
Power-up the ATX and observe the LED sequence. It takes about 1 minute
for the ATX to complete the power-up diagnostics. The ATX begins
system diagnostics on the PPE (topmost module) and then individually on
each installed module progressing from top to bottom.
The specific power-up tests run on the Ethernet switch modules are:
• ROM checksum test
• Instruction memory test
• Memory map tests
• Interrupt tests
• Ethernet data loopback test
Ethernet Switch Module User Guide Page 2-1
Chapter 2: Connecting to the Network
The power-up LED sequence for an Ethernet Switch Module not attached
to a network is as follows:
1. All LEDs flash.
2. The PWR LED remains on, and the TX and RX LEDs flash.
3. 3E02-04:
The PROC LED comes on for 5 seconds, then blinks, then remains lit.
The RX, COL, and TX LEDs flash for 100 milliseconds.
3E07-04:
The PROC, RX, and TX LEDs come on for 5 seconds, then the RX and
TX LEDs go off. The PROC LED remains lit.
3E08-04:
The PROC LED comes on for 5 seconds, then blinks, then remains lit.
The RX, COL, and TX LEDs flash for 100 milliseconds.
3E05-04:
The PROC, RX, and TX LEDs come on for 5 seconds, then the RX and
TX LEDs go off. The PROC LED remains lit.
4. After a few seconds the module reboots and the PROC LED comes on.
5. All other LED activity beyond this point is a function of the
configuration and connection of the ATX.
2.3 CONNECTING TO A NETWORK
To connect an Ethernet Switch Module to an Ethernet network, use the
following types of Ethernet cable:
• Unshielded twisted pair (10BASE-T)
• Thin coaxial cabling (10BASE2)
• Multimode fiber optics (10BASE-FL)
• Attachment Unit Interface cabling (10BASE5)
To connect the 3E02-08-ATX to an Ethernet network, use UTP cable
(10BASE-T).
Page 2-2 Ethernet Switch Module User Guide
Connecting to a Network
2.3.1 Connecting the 3E02-04 Ethernet Switch Module
You can connect each of the four 10BASE-T ports on the 3E02-04 to a
10BASE-T port on a device such as a workstation, server, hub, etc. using
unshielded twisted pair wiring. The second RJ45 connector (far right,
marked with an X) for each port on the 3E02-04 provide internal
crossover. This means that you can choose which type of UTP cable
(crossover or straight-through) you need to connect de vices to these ports.
Refer to Appendix B, Cables for cable specifications.
Connect one end of a UTP cable to an open 10BASE-T port on the
3E02-04 and the other end to the RJ45 port on the device (see Figure 2-1).
If the device doesn’t have an RJ45 port, connect a 10BASE-T transceiver
directly to the device’s AUI port, and then connect the UTP cable to the
RJ45 port on the transceiver.
QUAD IEEE 802.3 / ETHERNET 10BASET
LINK RX LINK RX PROC
COL TX
SEGMENT 4
COL TX PWR
XXXX
OFFLINE
LINK RX
COL TX
LINK RX
COL TX
SEGMENT 3SEGMENT 2 SEGMENT 1
Figure 2-1 Connecting to the 3E02-04
2.3.2 Connecting the 3E07-04 Ethernet Switch Module
You can connect each of the four pairs of BNC ports on the 3E07-04 to a
thin coax network or port. Each segment has two female BNC connectors
which form an internal T connection, eliminating the need for an external
BNC T-connector.
Attach the male end of a thin coax to the first BNC connector (see
Figure 2-2). Connect either another thin coax cable section or a 50-ohm
terminator to the other BNC connector on the same segment on the
3E07-04 module. Refer to Appendix B, Cables for cable specifications.
Ethernet Switch Module User Guide Page 2-3
Chapter 2: Connecting to the Network
You do not need to attach terminators to unattached segments.
NOTE
QUAD IEEE 802.3 / ETHERNET 10BASE2
SEGMENT 4SEGMENT 3SEGMENT 2 SEGMENT 1
RX
PROCRX
PWR
TX
OFFLINE
RX
TX
TX
RX
TX
Figure 2-2 Connecting the 3E07-04
2.3.3 Connecting the 3E08-04 Ethernet Switch Module
You can connect each of the four pairs of ST fiber ports on the 3E08-04 to
a 10BASE-FL port on a device such as a hub, etc. using fiber optic cable.
Each fiber segment has a pair of female ST connectors clearly marked as
“RX” and “TX.”
Attach the transmit (TX) connector on the 3E08-04 to the receive (RX)
connector on the attached device. Similarly, the receive (RX) connector
on the 3E08-04 must be connected to the transmit (TX) connector on the
attached device (see Figure 2-3). Refer to Appendix B for cable
specifications.
QUAD IEEE 802.3 / ETHERNET 10BASE-FL
LINK RX LINK RX
COL TX
SEGMENT 4
COL TX
PROC
PWR
OFFLINE
TXRX TXRX TXRX TXRX
To TX on device
Figure 2-3 Connecting the 3E08-04
LINK RX
COL TX
To RX on device
LINK RX
COL TX
SEGMENT 3SEGMENT 2 SEGMENT 1
Page 2-4 Ethernet Switch Module User Guide
Connecting to a Network
2.3.4 Connecting the 3E05-04 Ethernet Switch Module
You can connect each of the four AUI connectors on the 3E05-04 to an
Ethernet network.
To connect the 3E05-04 module to a thick coax network, you must use an
AUI drop cable and a tap-type transceiver:
1. Attach a tap-type transceiver to the thick coax cable. Refer to the
transceiver manufacturer’s manual for installation instructions.
2. Connect one end of the AUI drop to an AUI port on the 3E05-04 and
the other end to the tap-type transceiver.
a. Slide the hold-down clip on the female DB15 connector on the
module to the open position.
b. Attach the male DB15 connector on the drop cable, and then slide
the clip back to the closed position.
To connect the 3E05-04 to an alternate media network, you must use a
transceiver connected to the module’s AUI port. There are many types of
Ethernet transceivers available; the transceiver must be matched to the
Ethernet cable type. Refer to Appendix B for cable specifications.
QUAD IEEE 802.3 / ETHERNET AUI
SEGMENT 4SEGMENT 3SEGMENT 2 SEGMENT 1
RX
PROCRX
PWR
TX
RESET
RX
TX
TX
RX
TX
Figure 2-4 Connecting the 3E05-04
Ethernet Switch Module User Guide Page 2-5
Chapter 2: Connecting to the Network
2.3.5 Connecting the 3E02-08-ATX Ethernet Switch
Module
You can connect each of the eight ports on the 3E02-08-ATX to a
10BASE-T port on a device such as a workstation, server, hub, etc. using
UTP wiring. The RJ45 ports on the 3E02-08-ATX provide internal
crossover, which means that, depending on whether crossover is provided
on the device you’re connecting to, you can use either crossover or
straight-through UTP cable to connect a device to a port. Refer to
Appendix B for cable specifications.
Connect one end of a UTP cable to an open 10BASE-T port on the
3E02-08-ATX and the other end to the RJ45 port on the device (see
Figure 2-5). If the device doesn’t have an RJ45 port, connect a 10B ASE-T
transceiver directly to the device’s AUI port, and then connect the UTP
cable to the RJ45 port on the transceiver.
OFFLINE
SEGMENT
3X 4X 5X 6X 7X 8X2X1X
OCTAL IEEE 802.3 / ETHERNET 10BASE-T
Figure 2-5 Connecting the 3E02-08-ATX
LINK
ACT
COL
12345678
PROC
PWR
Page 2-6 Ethernet Switch Module User Guide
CHAPTER 3
CONFIGURING
3.1 INTRODUCTION
You can configure the Ethernet Switch Modules using the following tools:
• Local Console Manager (LCM) – allows you to monitor , manage, and
configure your ATX through an out-of-band RS-232 connection
• SPECTRUM Element Manager or the full SPECTRUM Enterprise
network management platform
• Any SNMP compliant network management system
For more details about LCM, see your ATX User Guide. For details about
the other network management software, refer to the product’s
documentation.
The following attributes are configurable using LCM:
• Port’s IP address for originating and receiving IP packets
• Enabling/disabling a port’s Transparent Spanning Tree, Source
Routing or Source Routing Transparent mode
Additionally, you can configure the following attributes using network
management software platforms (refer to the network management
software documentation for specific instructions):
• Parameters for diagnostic loopback testing of a port
• Protocol translations
Filtering normally occurs as part of the Transparent Spanning Tree and
Source Routing algorithms. In addition, you can establish configurable
criteria for filtering, to allow greater management control for security or
network congestion reasons. All configured filtering criteria are
Ethernet Switch Module User Guide Page 3-1
Chapter 3: Configuring
maintained in non-volatile memory and are saved across power cycles.
Filtering information is covered in the ATX User Guide.
3.2 CONNECTING THE LOCAL CONSOLE MANAGER
Connect the Local Console Manager (LCM) to the ATX. Refer to
Chapter 2, Connecting to the Network, of the ATX User Guide for
specific instructions.
Make sure the ATX is powered on and press
<Return> a few times. When
the ATX > prompt appears, LCM is ready to use.
3.3 LCM COMMANDS
To configure an Ethernet Switch Module, refer to the ATX User Guide for
LCM commands generic to all modules. Familiarize yourself with LCM
before configuring the module. Specific instructions for displaying the
port status are given in Chapter 4, Monitoring.
Page 3-2 Ethernet Switch Module User Guide
CHAPTER 4
MONITORING
4.1 DISPLAYING PORT STATUS
Using LCM, you can obtain the status of ports by typing status for the
appropriate port. A sample display is shown below.
4.1.1 Status Command
ATX >status 2
Port 2 (1st port on module 3) status
Type: Ethernet/802.3 CSMA/CD
Bridging: Transparent/Translating
Routing: IP Routing RIP
Enabled/Disabled: Bridging/Routing functions enabled
Spanning Tree: Forwarding
Pkts Transmitted: 503
Pkts Received: 89711
Small Buffers: 23
Rx_Q Overflows: 10
Carrier Losses: 9
Total Collisions: 184
Excess Collisions: 5
Rx FCS/Align Errs: 0
Internal Rx Errors: 0
Internal Tx Errors: 0
The status of the port includes the following information:
• Bridging - which functions have been enabled for bridging (see the
bridge command).
• Routing - which functions have been enabled for routing (see
ipxroute commands in your NMS manual).
and
• Enabled/Disabled - enabled if it is operational or, disabled if you used
the disable command to disable it. If the port is enabled but not
operational, its status will be broken. (A port could be broken if it is so
badly misconfigured as to be unusable. You might also see a status of
broken if an FDDI or Token Ring port can’t connect to a logical ring,
or if an Ethernet port continually fails as it tries to transmit.)
Ethernet Switch Module User Guide Page 4-1
iproute
Chapter 4: Monitoring
• Spanning T ree - the port’s Spanning Tree state, which could be any one
of the following states:
- Blocking - The port is not currently the designated port to a LAN
and is therefore not forwarding any packets. (This means there is
another route to that LAN and, since the Spanning Tree protocol
does not allow simultaneous redundant paths, this port is blocked.
If the other route to that LAN goes down, this port would then start
forwarding packets.)
- Listening - The port is listening for other bridges on the network
to determine if it should go to the forwarding or blocking state.
- Learning - The port is listening for other bridges on the network
and making a table of addresses from packets that it has receiv ed.
Once the port goes to the forwarding state, it can then use the
address information it has learned.
- Forwarding - The port is the designated port for the LAN and is
forwarding packets and sending out bridge protocol packets.
- Broken - The port is not forwarding packets. Reasons include no
cable connected, no link status, or network management has
disabled the port.
- Disabled - The port is not configured for Spanning Tree.
• Pkts Transmitted - number of packets transmitted from the port. This
includes any packets that might hav e experienced transmission errors.
(The port’s statistics are reset whenever the port is started.)
• Packets Recei ved - number of good packets recei ved through the port.
Packets with reception errors are not included, nor are packets local to
that segment that are hardware filtered.
• Small Buffers - number of buffers currently assigned to the port (see
RX_Q Overflows below).
• RX_Q Overflows - number of incoming packets dropped by the port
due to a lack of buffers. After a reboot, the ATX tries to automatically
re-allocate the Small Buffers among the ports so that the total number
of RX_Q Overflows is minimized.
• Carrier Losses - number of packet transmissions that detected a loss of
carrier (usually a transceiver problem).
Page 4-2 Ethernet Switch Module User Guide
Displaying Port Status
• Total Collisions - number of collisions during packet transmissions.
• Excess Collisions - number of packet transmissions that were aborted
due to 16 collisions (usually a transceiver problem).
• RX FCS/Align Errs - number of times a received pack et was discarded
due to a bad checksum or Frame Alignment error.
• Internal RX Errs - number of times an inbound packet was dropped
due to an internal error. (Whenever a packet is dropped due to TX_Q
Overflows, Internal RX Errs may also be incremented.)
• Internal TX Errs - number of times a packet transmission was aborted
due to an internal error.
All of the counter values are reset to zeros if the ATX is
NOTE
rebooted or if the module housing that port is halted and
restarted.
Ethernet Switch Module User Guide Page 4-3
Chapter 4: Monitoring
Page 4-4 Ethernet Switch Module User Guide
CHAPTER 5
DIAGNOSTICS AND TROUBLESHOOTING
5.1 POWER-UP DIAGNOSTICS
Built-in diagnostic capabilities for the Ethernet Switch Modules include:
• Power-up diagnostics, which are run every time an Ethernet Switch
Module is brought online.
• Front panel status LEDs.
• Local and remote loopback tests.
• Temperature sensors.
5.1.1 Power-up T ests
The power-up diagnostics assure that the ATX and all the installed
modules are operational. During diagnostic mode, the status LEDs are
used differently than during normal operation.
When the ATX is po wered-up, it automatically senses the installed boards
and reassigns port numbers starting with the PPE as port 1.
During a normal power-up test, the diagnostics test the entire ATX
starting with the PPE and proceeding slot by slot from the top down. The
normal power-up sequence is described in Chapter 2, Connecting to the
Network.
5.1.2 Power-Up Results
After completion of the power-up diagnostic sequence, all status LEDs on
the ATX front panel should be on (lit), indicating that the modules have
passed the power-up tests. Refer to Tables 5-1 through 5-5. If an Ethernet
Switch Module fails a critical test, it is automatically disabled.
Ethernet Switch Module User Guide Page 5-1
Chapter 5: Diagnostics and Troubleshooting
Table 5-1 Meaning of 3E05-04 LED Indicators
LED Meaning
RX Ethernet port is receiving data (LED flashes)
TX Ethernet port is transmitting data (LED flashes)
PROC Processor is ready for operation
POWER Module hardware is receiving power
Table 5-2 Meaning of 3E07-04 LED Indicators
LED Meaning
RX 10BASE-2 port is receiving data (LED flashes)
TX 10BASE-2 port is transmitting data (LED flashes)
PROC Processor is ready for operation
POWER Module hardware is receiving power
Table 5-3 Meaning of 3E08-04 LED Indicators
LED Meaning
COL
LNK
Receiver and transmitter active at the same time on 10BASE-FL
port
10BASE-FL port is connected to another device by a cable; both
cable and port are working correctly (LED is turned on)
RX 10BASE-FL port is receiving data (LED flashes)
TX 10BASE-FL port is transmitting data (LED flashes)
PROC Processor is ready for operation
POWER Module hardware is receiving power
Page 5-2 Ethernet Switch Module User Guide
Table 5-4 Meaning of 3E02-04 LED Indicators
LED Meaning
Operational Diagnostics
COL
LNK
RX 10BASE-T port is receiving data (LED flashes)
TX 10BASE-T port is transmitting data (LED flashes)
PROC Processor is ready for operation
POWER Module hardware is receiving power
LED Meaning
COL
Receiver and transmitter active at the same time on 10BASE-T
port and when port enters jabber state (LED flashes)
10BASE-T port is connected to another device by a cable; both
cable and port are working correctly (LED is turned on)
Table 5-5 Meaning of 3E02-08-ATX LED Indicators
Receiver and transmitter active at the same time on 10BASE-T
port
ACT 10BASE-T port is receiving and transmitting data
LINK
PROC Processor is ready for operation
POWER Module hardware is receiving power
10BASE-T port is connected to another device by a cable; both
cable and port are working correctly (LED is turned on)
5.2 OPERATIONAL DIAGNOSTICS
Built-in local and remote loopback tests can be used to test individual
ports while the ATX is operational. When in local loopback, a port is
disconnected from its network. The ATX generates loopback packets for
the port, and the port loops the packets back without sending them onto its
network.
Ethernet Switch Module User Guide Page 5-3
Chapter 5: Diagnostics and Troubleshooting
During a remote loopback test, the port is in normal operation, sending
and receiving packets to its network. The ATX generates loopback
packets which are sent out of the port to a particular destination device on
the port’ s network. The destination de vice echoes the packet back onto the
network, and the originating port receives the packet.
For both types of tests, normal operation is indicated when generated
packets are received back (after looping) without errors. For remote
loopback tests, the ATX creates LLC Type 1 test packets for LANs and
PPP echo-request packets for WANs and UARTs.
Both types of loopback tests can be initiated by the NMS, and test results
are reported to the NMS.
5.2.1 Diagnostic Results
ATX diagnostic results are indicated in two ways: by observing the front
panel LEDs (which are explained later in this chapter) or by reading NMS
trap messages. Both power-up and loopback diagnostics produce traps,
which are sent to the NMS and may be logged for future reference. In
some cases it may be more conv enient to simply observ e the LEDs, but in
most cases traps provide more information. There are no LEDs for the
loopback tests—the results of these tests must be observed (i.e., accurate
packet transmission) or read using an NMS (i.e., examine traps).
5.3 TROUBLESHOOTING
5.3.1 If The Module Fails To Power Up
If the Ethernet Switch Module fails to power up when the ATX is on and
functioning properly:
1. Check the status of ports using LCM.
2. Reset the Ethernet Switch Module and observe the power-up sequence
again.
3. If the sequence is still abnormal:
a. Take the module offline by pressing the OFFLINE button on the
module’s front panel.
Page 5-4 Ethernet Switch Module User Guide
Troubleshooting
b. Remove the interface module by unscrewing the two retaining
screws on the module’s front panel. Pull the module out using the
“ears” on the front panel.
c. Carefully but firmly press down on all socketed components.
d. Re-install the module. Make sure the module is properly seated
and tighten the retaining screws.
e. Reset the ATX and observe the power-up sequence.
4. If it is still abnormal, contact Cabletron Systems Technical Support.
5.3.2 Connectivity Problems
If the Ethernet Switch Module powers up normally but the workstations
are unable to communicate:
1. Check the LEDs for abnormalities which may help indicate the source
of the problem. (LED behavior during normal operation is explained
earlier in this chapter.)
2. Check the status of the ports using LCM.
3. Check for loose connections between the module, transceivers, and
devices.
4. Check that the proper type of cable is used: crossover or
straight-through depending on the configuration; distance limitations
are adhered to; the 5-4-3 rule is not violated, etc. (Refer to Appendix B
for cabling information and the 5-4-3 rule.)
Ethernet Switch Module User Guide Page 5-5
Chapter 5: Diagnostics and Troubleshooting
Page 5-6 Ethernet Switch Module User Guide
CHAPTER 6
ADDING/SWAPPING MODULES
Once you have recei v ed your ATX, you may want to add a new module to
expand your network bandwidth, replace a module with a module of a
different type, or swap a module with another module of the same type. If
you are:
• Adding an Ethernet switch module to a previously vacant slot or to a
slot that had a different type of module, refer to the section Adding an
Ethernet Switch Module below, for instructions.
• Replacing a module, refer to Section 6.3, Swapping an Ethernet
Switch Module, on page 6-2 for instructions.
Before adding or swapping modules, refer to the latest version of the A TX
Release Notes (provided with your ATX software) for information about
software and hardware version numbers and compatibility.
6.1 UNPACKING THE ETHERNET SWITCH MODULE
Unpack the Ethernet switch module carefully, handling it by the edges
only , and inspect it for possible damage. If an y damage is e vident, contact
Cabletron Systems. Save the original container and antistatic wrap in case
the module needs to be repaired.
6.2 ADDING AN ETHERNET SWITCH MODULE
If the module you are adding is of a different type than the module that
previously occupied that slot, or if the slot was previously vacant, you
have to reboot the ATX so it will recognize the new module.
1. Make sure the ATX is powered off.
2. Remove the network connections from the module you are going to
replace.
3. Loosen the screws at each end of the front panel of the interface
module you are going to replace.
Ethernet Switch Module User Guide Page 6-1
Chapter 6: Adding/Swapping Modules
4. Remove the installed interface module by pulling gently but firmly on
the ears at the ends of the module’s front panel.
5. Gently slide the Ethernet switch module into the plastic guides in the
module slot until it is completely inserted. Push the module firmly into
place, as far as it will go, to fully engage the connectors at the back of
the module with the backplane at the rear of the ATX chassis.
6. Tighten the screws on each side of the module’s front panel.
7. Power on the ATX, and check the Ethernet switch module LED
power-on sequence as described in Chapter 2, Connecting to the
Network.
8. Make the connections to the network as described in Chapter 2.
6.3 SWAPPING AN ETHERNET SWITCH MODULE
When swapping identical modules, it is recommended that you remove
power to the ATX. However, the Ethernet switch module you are
replacing must be taken offline first, as described below.
1. Take the module to be replaced offline, either by pressing the
OFFLINE button on the front panel, or by using the LCM
offline
command.
2. Remove power from the ATX.
3. Remove the network connections from the module. Note the ports to
which the network connections attach.
4. Loosen the screws at each end of the front panel of the module to be
replaced.
5. Remove the installed module by pulling gently but firmly on the ears
at the ends of the module’s front panel.
6. Gently slide the new module into the plastic guides in the module slot
until it is completely inserted. Push the module firmly into place, as far
as it will go, to fully engage the connectors at the back of the module
with the backplane at the rear of the ATX chassis.
Page 6-2 Ethernet Switch Module User Guide
Swapping An Ethernet Switch Module
7. Tighten the screws on each side of the module’s front panel.
8. If you took the original module offline by pressing the OFFLINE
button, the new Ethernet Switch Module will automatically come back
on line when it is inserted in the slot.
If you used the LCM offline command to take the original module
offline, you must use the
online command to bring the new module
online.
9. Check the module LED power-on sequence as described in Chapter 2,
Connecting to the Network.
10. Make the connections to the network as described in Chapter 2.
Ethernet Switch Module User Guide Page 6-3
Chapter 6: Adding/Swapping Modules
Page 6-4 Ethernet Switch Module User Guide
APPENDIX A
TECHNICAL SPECIFICATIONS
Standards Compliance
• Twisted pair Ethernet
• Thin Coax Ethernet
• Fiber Optic Ethernet
• Ethernet Version 2
• IEEE 802.3, 10BASE-T, 10BASE2, 10BASE-FL
Protocol T ranslations
• TCP/IP
• IPX
• AppleT alk
Dimensions
Length 30.99 cm (12.2 in.)
Width 24.13 cm (9.5 in.)
Weight 1.02 kg (2.25 lb.)
Ethernet Switch Module User Guide Page A-1
Appendix A: Technical Specifications
Environmental Requirements
Operating temperature 5˚ C to 40˚ C (41˚ F to 104˚ F)
Storage temperature -30˚ C to 90˚ C (-22˚ F to 194˚ F)
Relative humidity 0% to 95%, non-condensing
Connectors
3E02-04 RJ45 for UTP
3E07-04 BNC for Thin Coaxial Cable
3E08-04 ST for Fiber Optics
3E05-04 DB15 for AUI
3E02-08-ATX RJ45 for UTP
LEDs
• Power
• Processor (Processor status/ready)
• Link
• Collision (3E02-04 and 3E08-04 only)
• Receive
• Transmit
Bridging Domains
• Transparent
• Source Routing
• Source Routing Transparent
Page A-2 Ethernet Switch Module User Guide
Appendix A: Technical Specifications
Certifications
Safety UL 1950, CSA C22.2 950, EN60950 and
IEC 950
Emission FCC Part 15 Class A, EN55022 Class A, and
VCCI Class I
Immunity EN50082-1
Ethernet Switch Module User Guide Page A-3
Appendix A: Technical Specifications
Page A-4 Ethernet Switch Module User Guide
APPENDIX B
CABLES
B.1 TYPES/CONNECTORS
Table B-1 Cable Types and Connectors
Cable Type Male Connector
100 Ohm UTP,
Unshielded
Twisted Pair
AUI External Transceiver Drop 15-pin DB15, AUI
22 - 26 AWG
0.4 - 0.6 mm,
2 pairs
8-pin RJ45
Thick Coaxial
Cable
Thin Coaxial
Cable
Multimode Fiber
Optics
50 Ohm Coax N-Type
RG58 A/U or RG58 C/U
50 Ohm Coax
50/125, 62.5/125, 80/125 or
100/140 Micron Core/Cladding
BNC
ST
B.2 CABLE SPECIFICATIONS
Table B-2 UTP Cable Specifications
Type 100 Ohm (e.g., IBM Type 3 or AT&T DIW)
Number of Pairs 2 or 4
Max. Link Segment Length 328 ft (100 m)
Min. Link Segment Length 2.0 ft (0.6 m)
Max. Number of Attachments 2
Ethernet Switch Module User Guide Page B-1
Appendix B: Cables
Table B-3 AUI Cable Specifications
Type External T ransceiv er Drop
Max. Drop Cable Length 165 ft (50 m)
Min. Drop Cable Length None
Max. Number of Attachments 2
Table B-4 Thick Coax Cable Specifications
Type 50 Ohm Coax
Max. Cable Segment Length 1640 ft (500 m)
Min. Cable Segment Length 8.2 ft (2.5 m)
Max. Number of Attachments 100
Table B-5 Thin Coax Cable Specifications
Type RG58 A/U or RG58 C/U Coax
Max. Cable Segment Length 606 ft (185 m)
Min. Cable Segment Length 1.5 ft (0.5 m)
Max. Number of Attachments 30
Table B-6 Duplex Fiber Cable Specifications
Type
50/125, 62.5/125, 80/125,
100/140 micron core
Max. Link Segment Length 1.24 mi (2.0 Km)
Min. Link Segment Length None
Max. Number of Attachments 2
Page B-2 Ethernet Switch Module User Guide
10BASE-T Pin Assignments
B.3 10BASE-T PIN ASSIGNMENTS
An Ethernet cable link requires the use of two pairs of a multi-pair cable.
While a cable containing only two pairs of wire can be used, it is more
common to use four-pair cabling for 10BASE-T links. The jacket of each
wire in a four-pair cable will have an overall color; brown, blue, orange,
green, or white. In a 4-pair UTP cable (the typical UTP used in
networking installations) there will be one wire each of brown, blue,
green, and orange, and four wires whose overall color is white. The white
wires will be distinguished from one another by periodically placed
(usually within 1/2 inch of one another) rings of the other four colors.
Each wire pair must be attached to the RJ45 connectors in a
NOTE
certain orientation. (See Table B-7 for an explanation.)
Refer to the diagram below and note how the pins are numbered. Be sure
to hold the connectors in the same orientation when connecting the wires
to the pins.
TX+
TX-
1 2 3 4 5 6 7 8
8
RX-
RX+
Figure B-1 RJ45 Connector Pin Numbers
1
1
8
Each UTP link segment must have an RJ45 male connector attached to
both ends. According to the 10BASE-T specification, pins 1 and 2 on the
RJ45 connector are used for transmitting data; pins 3 and 6 are used for
receiving data, as shown below.
Ethernet Switch Module User Guide Page B-3
Appendix B: Cables
Table B-7 RJ45 Crossover Pin Assignments
RJ45 Pin Assignment
1 Tx+
2 Tx–
3 Rx+
6 Rx–
*The “+” and “–” signs are used to represent the polarity
of the two wires that make up each wire pair.
*
B.3.1 Crossover Wiring
Two Ethernet 10BASE-T devices can communicate only if the transmitter
on one device is connected to the receiver on the other device. This
reversal, or crosso ver function, can be implemented either in the wiring or
in the device itself.
When connecting two identical UTP ports (i.e., both crossover ports or
both straight-through ports), a crossover must be implemented in the
wiring. Refer to the following table for crossover pin assignments.
Table B-8 Crossover - RJ45 Pin Assignments
Hub Device
1 (Tx+) 3 (Rx+)
2 (Tx–) 6 (Rx–)
3 (Rx+) 1 (Tx+)
6 (Rx–) 2 (Tx–)
Page B-4 Ethernet Switch Module User Guide
AUI Pin Assignments
B.3.2 Straight-Through Wiring
If the UTP link segment is to join two ports and only one of the ports has
an internal crossover, the two pairs of wires must be straight-through, as
shown below.
Table B-9 Straight-Through RJ45 Pin Assignments
Hub Device
1 (Tx+) 3 (Tx+)
2 (Tx–) 6 (Tx–)
3 (Rx+) 1 (Rx+)
6 (Rx–) 2 (Rx–)
B.4 AUI PIN ASSIGNMENTS
Table B-10 AUI Pin Assignments
Pin Circuit Signal Name
3 DO-A Data Out Circuit A
10 DO-B Data Out Circuit B
11 DO-S Data Out Circuit Shield
5 DI-A Data In Circuit A
12 DI-B Data In Circuit B
4 DI-S Data In Circuit Shield
8 CO-S Control Out Circuit Shield
2 CI-A Control In Circuit A
9 CI-B Control In Circuit B
1 CI-S Control In Circuit Shield
6 VC Voltage Common
13 VP Voltage Plus
Ethernet Switch Module User Guide Page B-5
Appendix B: Cables
Table B-10 AUI Pin Assignments (Continued)
Pin Circuit Signal Name
14 VS Voltage Shield
Shell PG
Protective Ground
(Conductive Shell)
Voltage Plus (VP) and Voltage Common (VC) use a single
NOTE
twisted-pair in the AUI cable.
B.5 5 - 4 - 3 RULE
Between any two nodes (i.e., PCs or other stations) on the network, there
may be:
• Up to 5 segments in series
• Up to 4 repeaters or multi-port hubs
• Up to 3 populated segments (that is, segments attached to two or more
PCs).*
* The remaining two segments are unpopulated; these are known as
inter-repeater links or IRLs. This distinction between populated and
unpopulated segments is significant for coax networks only.
This rule completely consistent with the IEEE 802.3
NOTE
specification, and is meant only to summarize the configuration
specification.
Page B-6 Ethernet Switch Module User Guide
5 - 4 - 3 Rule
B.5.1 Definitions
Backbone
A coax segment with hubs, possibly file servers.
Cascade
A method of interconnecting hubs using their ports rather than their
stacking connectors.
Link Segment
A length of twisted-pair or fiber cable joining a pair of devices in a star
topology (e.g., two hubs or a hub and a station).
Populated Segment
A coax segment to which multiple devices are attached: maximum 100
transceivers for thick coax and 30 de vices (e.g., stations and hubs) for thin
coax.
Coax Segment
An electrically continuous length of coax cable with a terminating resistor
at each end.
Stack
A method of interconnecting multiple hubs so that multiple hubs appear
as one large hub or repeater to the network.
Unpopulated Segment or Inter-Repeater Link (IRL)
Relevant to coax networks only.
A coax segment with one repeater or hub at each end and no other
attached devices is an IRL.
Ethernet Switch Module User Guide Page B-7
Appendix B: Cables
Page B-8 Ethernet Switch Module User Guide
INDEX
A
Adding modules 6-1
B
Bridging
domains A-2
C
Cabling. See wiring
Certifications A-3
Configuration tools 3-1
Connectors A-2
D
Definitions B-7
Diagnostics
LED 5-1
power up 5-1
results 5-4
Dimensions A-1
Displaying port status 4-1
Document conventions 1-2
L
LEDs
diagnostic 5-1
power up sequence 2-1
types 1-6 to 1-10
M
Module versions 1-4
P
Pin assignments
AUI B-5
RJ45 crossover B-4
Protocol translations A-1
R
Repeater rule B-6
S
Specifications A-1
Standards compliance 1-5 to 1-9
swapping a module 6-2
E
Environmental requirements A-2
T
Technical support 1-3
Troubleshooting 5-4
F
Filtering 3-2
Front panel
3E02-04 1-6
3E02-08-ATX 1-10
3E05-04 1-9
3E07-04 1-7
3E08-04 1-8
ATX 1-5
H
Help 1-3
Ethernet Switch Module User Guide Index-1
U
Unpacking 6-1
UTP
wire color B-3
W
Wiring
connectors B-1
crossover wiring B-4
specifications B-1
straight-through B-5
types B-1
Index
Index-2 Ethernet Switch Module User Guide
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