Cabletron Systems Switch 3H02 04 User Manual

FAST ETHERNET SWITCH MODULE  
(3H02-04 AND 3H08-04)  
USER GUIDE  
QUAD FAST ETHERNET / 802.3 100BASE-TX (UTP)  
SEGMENT 1  
SEGMENT 2  
SEGMENT 3  
SEGMENT 4  
PROC  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
PWR  
OFFLINE  
X
X
X
X
QUAD FAST ETHERNET / 802.3 100BASE-FX  
SEGMENT 4  
SEGMENT 1  
SEGMENT 2  
SEGMENT 3  
PROC  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
PWR  
OFFLINE  
TX  
RX  
TX  
RX  
TX  
RX  
TX  
RX  
 
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: 9031874-01 May 1996  
All product names mentioned in this manual may be trademarks or registered trademarks of their  
respective companies.  
Printed on  
Recycled Paper  
FE Switch Module User Guide  
i
 
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: 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 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: Changes or modifications made to this device which are not expressly approved by the  
party responsible for compliance could void the user’s authority to operate the equipment.  
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  
FE Switch Module User Guide  
 
Notice  
CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT  
IMPORTANT: Before utilizing this product, carefully read this License Agreement.  
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.  
CABLETRON SOFTWARE PROGRAM LICENSE  
1.  
LICENSE. You have the right to use only the one (1) copy of the Program provided in this  
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.  
3.  
OTHER RESTRICTIONS. You may not reverse engineer, decompile, or disassemble the  
Program.  
APPLICABLE LAW. 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.  
EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY  
1.  
EXCLUSION OF WARRANTY. Except as may be specifically provided by Cabletron in  
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 MATERIALS, AND ANY ACCOMPANYING HARDWARE.  
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.  
FE 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  
FE Switch Module User Guide  
 
CONTENTS  
CHAPTER 1  
INTRODUCTION  
1.1 Using This manual....................................................................... 1-2  
1.2 Overview...................................................................................... 1-3  
1.3 3H02-04 FE Switch Module......................................................... 1-3  
1.3.1 Connectors ..................................................................... 1-4  
1.3.2 LEDs............................................................................... 1-4  
1.3.3 Offline Button.................................................................. 1-4  
1.4 3H08-04 FE Switch Module......................................................... 1-5  
1.4.1 Connectors ..................................................................... 1-5  
1.4.2 LEDs............................................................................... 1-5  
1.4.3 Offline Button.................................................................. 1-5  
1.5 Document Conventions ............................................................... 1-6  
1.6 Related Manuals.......................................................................... 1-7  
1.7 Getting Help................................................................................. 1-7  
CHAPTER 2  
CONNECTING TO THE NETWORK  
2.1 Power-Up LED Sequence ........................................................... 2-1  
2.2 Connecting to a Network ............................................................. 2-2  
2.2.1 Connecting the 3H02-04 FE Switch Module................... 2-2  
2.2.2 Connecting the 3H08-04 FE Switch Module................... 2-3  
CHAPTER 3  
CONFIGURING  
3.1 Connecting the Local Console Manager ..................................... 3-2  
3.2 Local Console Manager commands............................................ 3-2  
CHAPTER 4  
MONITORING  
4.1 Displaying Switch Module Port Status......................................... 4-1  
CHAPTER 5  
DIAGNOSTICS AND TROUBLESHOOTING  
5.1 Power-Up Tests........................................................................... 5-1  
5.2 Power-Up Results........................................................................ 5-1  
5.3 Operational Diagnostics .............................................................. 5-2  
5.4 Diagnostic results ........................................................................ 5-3  
5.5 Troubleshooting........................................................................... 5-3  
5.5.1 If the Module Fails to Power Up...................................... 5-3  
5.5.2 Connectivity Problems.................................................... 5-4  
FE Switch Module User Guide  
v
 
Contents  
CHAPTER 6  
ADDING/SWAPPING MODULES  
6.1 Unpacking the Switch Module......................................................6-1  
6.2 Adding a Switch Module ..............................................................6-1  
6.3 Swapping a 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 Fast Ethernet Pin Assignments................................................... B-2  
B.3.1 About RJ45 Connectors.................................................. B-2  
B.3.2 Crossover Wiring for the 3H02-04 .................................. B-3  
B.3.3 Straight-Through Wiring for the 3H02-04........................ B-4  
B.3.4 Limitations & Restrictions ............................................... B-4  
B.3.5 Definitions....................................................................... B-4  
INDEX  
vi  
FE Switch Module User Guide  
 
CHAPTER 1  
INTRODUCTION  
Welcome to Cabletron Systems Fast Ethernet Switch Module (3H02-04  
and 3H08-04) User Guide. This manual provides information for  
configuring, monitoring, and maintaining the Fast Ethernet (FE) Switch  
Modules. The two types of FE Switch Modules are:  
3H02-04, 4 port 100TX Switch Module - UTP/RJ45  
3H08-04, 4 port 100FX Switch Module - Fiber/ST  
The name FE Switch Module(s) will be used to discuss both types of  
modules throughout this manual, unless there is a need to call attention  
to some characteristic of an individual module.  
POWERENSGTAINTTEU  
U
SS  
R
T
B
A
OTUSSTATUS SUPPLYSAUPPLY  
B
1.6 Gbps  
RESET  
PACKET PROCESSING ENGINE  
NMS PORT  
2X 3X  
POWER  
OCTAL IEEE 802.3  
/
ETHERNET 10BASE-T  
PROC  
SEGMENT  
1X  
4X  
5X  
6X  
7X  
8X  
LINK  
ACT  
COL  
1
2
3
4
5
6
7
8
PWR  
OFFLINE  
QUAD IEEE 802.5 TOKEN RING (UTP)  
RING  
1
RING  
2
RING  
3
RING  
4
RX ST  
RX ST  
RX ST  
RX ST PROC  
TX 16  
TX 16  
TX 16  
TX 16 PWR  
OFFLINE  
QUAD FAST ETHERNET  
SEGMENT  
/
802.3 100BASE-FX  
SEGMENT  
1
SEGMENT  
2
SEGMENT  
3
4
PROC  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
PWR  
OFFLINE  
OFFLINE  
TX  
RX  
FDDI MIC  
TX  
RX  
TX  
RX  
TX  
RX  
INTELLIGENT FDDI  
A
OPTICAL BYPASS  
FDDI MIC  
B
THRUWRAPRX PROC  
RING  
RING  
A
B
MULTI-MODE  
SEGMENT  
MULTI-MODE  
TX PWR  
S
G
E
T
R
S
G
E
T
R
S
    M
T
R
Q
    I
S
G
               /
    N
    H
N
T
    1
    B
PR  
O
O
F
I
QUAD IEEE 802.3 ETHERNET 10BASE2  
/
1
SEGMENT  
2
SEGMENT  
3
SEGMENT  
4
RX  
RX  
TX  
RX  
RX  
PROC  
TX  
TX  
TX  
PWR  
OFFLINE  
Figure 1-1 ATX Front Panel  
FE Switch Module User Guide  
Page 1-1  
 
Chapter 1: Introduction  
1.1 USING THIS MANUAL  
Read this manual to gain an understanding of the features and capabilities  
of the FE Switch Modules. A general knowledge of Ethernet and IEEE  
802.3 type data communications networks and their physical layer  
components will be helpful when installing and using these devices.  
Chapter 1, Introduction, outlines the contents of this manual, briefly  
describes the features of the modules, related documents, and how to get  
help.  
Chapter 2, Connecting to the Network, describes how to physically  
attach the module to an Ethernet network.  
Chapter 3, Configuring, discusses the software configuration options for  
the modules.  
Chapter 3, Monitoring, provides information on Ethernet port statistics  
obtained through Local Console Manager.  
Chapter 4, Diagnostics and Troubleshooting, discusses identifying  
possible problems with the module.  
Chapter 5, Adding/Swapping Modules, gives instructions for adding and  
replacing a module.  
Appendix A, Specifications, lists the pertinent technical information  
about the modules.  
Appendix B, Cables, lists the pertinent cabling information about the  
modules.  
Page 1-2  
FE Switch Module User Guide  
 
Overview  
1.2 OVERVIEW  
Cabletron Systems Fast Ethernet Switch Modules connect the ATX hub  
to a maximum of four individual Ethernet IEEE 802.3 Local Area  
Networks (LANs). Through the ATX backplane, connectivity to other  
Fast Ethernet devices, as well as connectivity to FDDI, Token Ring, and  
Ethernet networks is supported. You can configure the module to support  
Transparent Spanning Tree, Source Routing, or Source Routing  
Transparent Bridging on each of the FDDI, Token Ring, or Ethernet ports  
of the ATX. The ATX is also able to translate higher level protocols to  
allow communications between end-nodes on Ethernet and end-nodes on  
FDDI or Token Ring; protocols translated include TCP/IP, Novel  
NetWare, and AppleTalk Phase II.  
The switch modules include processing circuitry for receiving and  
forwarding data packets between the connected devices. Each module  
contains an offline button as well as several light emitting diodes (LEDs)  
that indicate the operational status of the module and the individual ports.  
You can install the switch modules in any of the five interface slots of the  
ATX. Each switch module provides connectivity to four distinct 100 Mb  
LANs.  
1.3 3H02-04 FE SWITCH MODULE  
The 3H02-04 (Figure 1-2) provides connection for four independent  
100BASE-TX LANs to the ATX backplane and packet processing engine  
(PPE). It includes processing circuitry for receiving and forwarding  
packets between the connected 100BASE-TX LANs within each module.  
The 3H02-04 contains several LEDs to indicate the module’s operational  
status. Each segment has link test enabled and supports receive pair  
polarity reversal detection and automatic correction.  
The 3H02-04 supports unshielded twisted pair (UTP) and IEEE 802.3  
100BASE-TX specification.  
FE Switch Module User Guide  
Page 1-3  
 
Chapter 1: Introduction  
1.3.1 Connectors  
The 3H02-04 includes four 8-pin RJ45 receptacle connectors that you can  
attach directly to the network by using unshielded twisted-pair (UTP)  
cabling. The ATX power supply provides the power for the module.  
An internal receive/transmit pair crossover is provided in the  
second connector on each port. This means that when either a  
NOTE  
station or server is directly attached to a 3H02-04 port, you can  
choose to use either straight-through or crossover cabling. For  
more cabling and crossover information, see Appendix B.  
1.3.2 LEDs  
The 3H02-04 contains a total of 14 green LEDs labeled LINK, RX, and  
TX for each segment, plus PROC and PWR for the module. The LEDs are  
described in Chapter 5 of this manual.  
1.3.3 Offline Button  
Use the offline button before swapping the module, to take it offline until  
the replacement is installed.  
Status LEDs  
Offline button  
QUAD FAST ETHERNET / 802.3 100BASE-TX (UTP)  
SEGMENT 4  
SEGMENT 1  
SEGMENT 2  
SEGMENT 3  
PROC  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
PWR  
OFFLINE  
X
X
X
X
RJ45 Connectors  
Figure 1-2 3H02-04 Front Panel  
Page 1-4  
FE Switch Module User Guide  
 
 
3H08-04 FE Switch Module  
1.4 3H08-04 FE SWITCH MODULE  
The 3H08-04 (Figure 1-3) provides connection for four independent  
100BASE-FX LANs to the ATX backplane and packet processing engine  
(PPE). It includes processing circuitry for receiving and forwarding  
packets between the connected 100BASE-FX LANs within each module.  
The 3H08-04 contains several LEDs to indicate the module’s operational  
status.  
The 3H08-04 supports fiber optic and the IEEE 802.3 100BASE-FX  
specification.  
1.4.1 Connectors  
The 3H08-04 includes four pairs of fiber optic socket 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.  
1.4.2 LEDs  
The 3H08-04 contains a total of 14 green LEDs labeled LINK, RX, and  
TX for each segment, plus PROC and PWR for the module. The LEDs are  
described in Chapter 5 of this manual.  
1.4.3 Offline Button  
Use the offline button before swapping the module, to take it offline until  
the replacement is installed.  
Offline Button  
Status LEDs  
QUAD FAST ETHERNET / 802.3 100BASE-FX  
SEGMENT 4  
SEGMENT 1  
SEGMENT 2  
SEGMENT 3  
PROC  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
PWR  
OFFLINE  
TX  
RX  
TX  
RX  
TX  
RX  
TX  
RX  
Fiber Connectors  
Figure 1-3 3H08-04 Front Panel  
FE Switch Module User Guide  
Page 1-5  
 
 
Chapter 1: Introduction  
1.5 DOCUMENT CONVENTIONS  
The following conventions are used throughout this document:  
Note symbol. Calls the reader’s attention to any item of  
information that may be of special importance.  
NOTE  
Tip symbol. Conveys helpful hints concerning procedures or  
TIP  
actions.  
Caution symbol. Contains information essential to avoid  
damage to the equipment.  
!
CAUTION  
Warning symbol. Warns against an action that could result in  
equipment damage, personal injury or death.  
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  
Page 1-6  
FE Switch Module User Guide  
 
1.6 RELATED MANUALS  
Use the following manuals to supplement the procedures and other  
technical data provided in this manual. The procedures contained in the  
following manuals are referenced where appropriate, but not repeated in  
this manual.  
ATX User Guide  
ATX MIB Reference Guide  
If you need internetworking reference material, you may find the  
following books helpful:  
Interconnections, Bridges and Routers, Radia Perlman, Addison  
Wesley 1992.  
Internetworking with TCP/IP: Principles, Protocols, and Architecture  
(2nd edition), Volumes I and II, Douglas Comer, Prentice Hall 1991.  
The Simple Book, An Introduction to Management of TCP/IP-based  
internets, Marshall T. Rose, Prentice Hall 1991.  
1.7 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  
Monday – Friday; 8 A.M. – 8 P.M. Eastern Time  
GO CTRON from any ! prompt  
ctron.com (134.141.197.25)  
anonymous  
By CompuServe  
By Internet mail  
By FTP  
Login  
Password  
your email address  
Before calling Cabletron Systems Technical Support, have the following  
information ready:  
FE Switch Module User Guide  
Page 1-7  
 
Chapter 1: Introduction  
A description of the failure  
A description of any action(s) already taken to resolve the problem  
(e.g., changing mode switches, rebooting the unit, etc.)  
A description of your network environment (layout, cable type, etc.)  
Network load and frame size at the time of trouble (if known)  
The serial and revision numbers of all Cabletron Systems products in  
the network  
The device history (i.e., have you returned the device before, is this a  
recurring problem, etc.)  
Any previous Return Material Authorization (RMA) numbers  
Page 1-8  
FE Switch Module User Guide  
 
CHAPTER 2  
CONNECTING TO THE NETWORK  
This chapter provides reference material and instructions that network  
administrators can use to configure the Fast Ethernet Switch Modules.  
For instructions on adding a switch module to the ATX, see Chapter 5,  
Adding/Swapping Modules.  
2.1 POWER-UP LED SEQUENCE  
Watch the LED sequence during power-up. 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, starting at the top and working down to the bottom.  
Using both processors, the specific power-up tests run on the switch  
module are:  
ROM checksum test  
Instruction memory test  
Memory map tests  
Interrupt tests  
Fast Ethernet data loopback tests  
The power-up LED sequence for the Fast Ethernet module is as follows:  
1. All LEDs flash.  
2. The PWR LED remains on, and the TX LEDs flash.  
3. On each switch module, the following occurs:  
a. The PROC LED comes on for 5 seconds, blinks, then remains lit.  
b. The RX and TX LEDs flash momentarily.  
FE Switch Module User Guide  
Page 2-1  
 
Chapter 2: Connecting to the Network  
4. After a few seconds, the switch 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.  
2.2 CONNECTING TO A NETWORK  
To connect the switch module to a Fast Ethernet network, use the  
following types of Ethernet cable:  
Unshielded Twisted Pair (UTP for 100BASE-TX)  
Fiber (100BASE -FX)  
2.2.1 Connecting the 3H02-04 FE Switch Module  
You can connect each of the four 100BASE-TX ports of the 3H02-04 to a  
100BASE-TX port on a device such as a workstation, server, hub, etc.,  
using unshielded twisted pair cable. Each segment on the 3H02-04  
provides two connectors. Depending on whether crossover is provided on  
the device being connected to, use either crossover or straight-through  
UTP cable to connect to a port. Keep in mind, however, to use only one  
connector on each segment. For more information on cable  
specifications, see Appendix B.  
Connect one end of a UTP cable to an open port on the 3H02-04 and the  
other end to the RJ45 port on the device (see Figure 2-1).  
QUAD FAST ETHERNET / 802.3 100BASE-TX (UTP)  
SEGMENT 1  
SEGMENT 2  
SEGMENT 3  
SEGMENT 4  
PROC  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
PWR  
OFFLINE  
X
X
X
X
Figure 2-1 3H02-04 Front Panel Connectors  
Page 2-2  
FE Switch Module User Guide  
 
 
Connecting to a Network  
2.2.2 Connecting the 3H08-04 FE Switch Module  
You can connect each of the four pairs of ST fiber ports on the 3H08-04 to  
Each fiber segment has a pair of female ST connectors clearly marked as  
“RX” and “TX.”  
Attach the transmit (TX) connector on the 3H08-04 to the receive (RX)  
connector on the attached device. Similarly, you must then connect the  
receive (RX) connector on the 3H08-04 to the transmit (TX) connector on  
the attached device (see Figure 2-2). For more information on cable  
specifications, see Appendix B.  
QUAD FAST ETHERNET / 802.3 100BASE-FX  
SEGMENT 1  
SEGMENT 2  
SEGMENT 3  
SEGMENT 4  
PROC  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
TX  
RX  
LK  
PWR  
OFFLINE  
TX  
RX  
TX  
RX  
TX  
RX  
TX  
RX  
Figure 2-2 3H08-04 Front Panel Connections  
FE Switch Module User Guide  
Page 2-3  
 
 
Chapter 2: Connecting to the Network  
Page 2-4  
FE Switch Module User Guide  
 
CHAPTER 3  
CONFIGURING  
You can configure your FE Switch Modules using the following tools:  
Local Console Manager (LCM), which lets you monitor, manage, and  
configure your ATX through an out-of-band RS-232 connection  
Any SNMP-based network management system  
For more details about Local Console Management, see your ATX User  
Guide. For details about the other network management software, see the  
product’s documentation.  
You can configure the following attributes using Local Console Manager:  
Port’s IP address for originating and receiving IP packets  
Alarm thresholds for hardware errors  
Enabling/disabling a port’s Transparent Spanning Tree, Source  
Routing, or Source Routing Transparent bridge mode  
Also you can configure the following attributes using network  
management software, (see the NMS 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  
maintained in non-volatile memory and are saved across power cycles.  
Filtering information is covered in the ATX User Guide.  
FE Switch Module User Guide  
Page 3-1  
 
Chapter 3: Configuring  
3.1 CONNECTING THE LOCAL CONSOLE MANAGER  
Connect the Local Console Manager to the ATX. For specific  
instructions, see Chapter 2, Connecting to the Network of the ATX User  
Guide.  
Make sure the ATX is powered on and press <Return>a few times. When  
the ATX> prompt is displayed, the Local Console Manager is ready to  
use. The default password is <Return>.  
3.2 LOCAL CONSOLE MANAGER COMMANDS  
To configure the switch modules, refer to the ATX User Guide for Local  
Console Manager commands generic to all modules, Make sure you’re  
familiar with Local Console Manager before configuring the module. For  
specific instructions on displaying the port status, see Chapter 4.  
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CHAPTER 4  
MONITORING  
4.1 DISPLAYING SWITCH MODULE PORT STATUS  
Using Local Console Manager, you can get the status of the switch  
module ports by typing statusfor the appropriate switch module port. A  
sample display is shown below.  
ATX >status 3  
Port 3 (1st port on module 3) status  
Type: 100 Mbps Ethernet/802.3 CSMA/CD  
Bridging: Transparent/Translating  
Routing: IP Routing  
Enabled/Disabled: Bridging/Routing functions enabled  
Spanning Tree: Forwarding  
Pkts Transmitted: 2021469  
Pkts Received: 1078  
Small Buffers: 36  
Rx_Q Overflows: 0  
Carrier Losses: 0  
Total Collisions: 4  
Excess Collisions: 0  
Rx FCS/Align Errs: 0  
Internal Rx Errs: 0  
Internal Tx Errs: 0  
The status of a switch module port includes the following information:  
Type - 100 Mbps Ethernet/802.3 CSMA/CD  
Bridging - which functions have been enabled for bridging (see the  
bridgecommand).  
Routing - which functions have been enabled for routing (see iproute  
and ipxroutecommands).  
Enabled/Disabled - enabled if it is operational or, disabled if you used  
the disablecommand 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 see a status of  
broken if a FDDI or Token Ring port can’t connect to a logical ring, or  
if an Ethernet or Fast Ethernet port continually fails as it tries to  
transmit.)  
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Chapter 4: Monitoring  
Spanning Tree - the port’s Spanning Tree state, which could be any  
one of the following states:  
Blocking - The port isn’t currently the designated port to a  
LAN and is not forwarding any packets. (This means another  
port is providing the route to that LAN and since the Spanning  
Tree protocol doesn’t allow simultaneous redundant paths, the  
port is blocked. If the other port’s 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 received. 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 for a  
broken status might include no cable connected, no link status,  
the ring is not operational, or an NMS has disabled the port.  
Disabled - The port isn’t configured for Spanning Tree.  
Pkts Transmitted - number of packets transmitted from the port. This  
includes any packets that might have experienced transmission errors.  
(The port’s statistics are reset whenever the port is started.)  
Pkts Received - number of good packets received 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 the port had to drop  
because of 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.  
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Displaying Switch Module Port Status  
Carrier Losses - the number of packet transmissions that detected a  
loss of carrier (usually a transceiver problem).  
Total Collisions - number of collision 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 packet 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  
rebooted or if the module housing that port is stopped and  
restarted.  
NOTE  
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Chapter 4: Monitoring  
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FE Switch Module User Guide  
 
CHAPTER 5  
DIAGNOSTICS AND TROUBLESHOOTING  
Built-in diagnostic capabilities for the FE Switch Modules include:  
Power-up diagnostics, which are run every time the switch module is  
brought on line  
Front panel status LEDs  
Local and remote loopback tests  
Temperature sensors  
5.1 POWER-UP TESTS  
The power-up diagnostics assure that the ATX and all the installed  
modules are operating. During diagnostic mode, the status LEDs are used  
differently than during normal operation.  
When you power up the ATX, 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 going from slot to slot, from the top down. The normal  
power-up sequence is described in Chapter 2, Connecting to the  
Network.  
5.2 POWER-UP RESULTS  
After the power-up diagnostic sequence is complete, all status LEDs on  
the ATX front panel should be on (lit), indicating that the modules have  
passed the power-up tests (see Table 5-1 and Table 5-2). If a switch  
module fails a critical test, it is automatically disabled.  
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Chapter 5: Diagnostics and Troubleshooting  
Table 5-1 Meaning of 3H02-04 LED Indicators  
Meaning  
LED  
100BASE-TX port is connected to another device by a cable;  
both the cable and port are working correctly  
LK  
RX  
100BASE-TX port is receiving data (LED flashes)  
100BASE-TX port is transmitting data (LED flashes)  
Switch module processor is ready for operation  
Switch module hardware is receiving power  
TX  
PROC  
PWR  
Table 5-2 Meaning of 3H08-04 LED Indicators  
Meaning  
LED  
100BASE-FX port is connected to another device by a cable;  
both the cable and port are working correctly  
LK  
RX  
100BASE-FX port is receiving data (LED flashes)  
100BASE-FX port is transmitting data (LED flashes)  
Switch module is ready for operation  
TX  
PROC  
PWR  
Switch module hardware is receiving power  
5.3 OPERATIONAL DIAGNOSTICS  
You can use local and remote loopback tests 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.  
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 ports network. The destination device echoes the packet back onto the  
network, and the originating port receives the packet.  
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FE Switch Module User Guide  
 
   
Diagnostic results  
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.  
To start both types of loopback tests, use the NMS. When you use the  
NMS for these tests, the results are reported back to the NMS.  
5.4 DIAGNOSTIC RESULTS  
ATX diagnostic results are indicated in two ways: by looking at 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.  
Although you might find it more convenient to just watch the LEDs, 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).  
5.5 TROUBLESHOOTING  
5.5.1 If the Module Fails to Power Up  
If the FE Switch Modules fail to power up when the ATX is on and  
functioning properly:  
1. Check the status of ports using Local Console Manager.  
2. Reset the switch module and watch the power-up sequence again.  
3. If the sequence is still abnormal:  
a. Remove the interface module by unscrewing the two retaining  
screws on the module front panel.  
b. Carefully, but firmly, press down on all socketed components.  
c. Re-install the module. Make sure the module is properly seated  
and tighten the retaining screws.  
d. Reset the ATX and observe the power-up sequence.  
4. If it is still abnormal, contact Cabletron Systems Technical Support.  
FE Switch Module User Guide  
Page 5-3  
 
Chapter 5: Diagnostics and Troubleshooting  
5.5.2 Connectivity Problems  
If the FE Switch Modules power up normally, but the workstations are  
unable to communicate:  
1. Check the LED 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 Local Console Manager  
3. Check for loose connections between the switch module 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, etc. (For more information on other limitations or  
restrictions that may apply, see the IEEE 802.3 standards  
specification.)  
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FE Switch Module User Guide  
 
CHAPTER 6  
ADDING/SWAPPING MODULES  
Once you have received 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 a switch module to a previously vacant slot or to a slot that had  
a different type of module, see Adding a Switch Module, below, for  
instructions.  
Replacing a switch module with another switch module of the same  
type, see Swapping a Switch Module, below.  
Before adding or swapping modules, see the latest version of the ATX  
Release Notes (provided with your ATX software) for information about  
software and hardware version numbers and compatibility.  
6.1 UNPACKING THE SWITCH MODULE  
Unpack the switch module carefully, handling it by the edges only, and  
inspect it for damage. If any damage is evident, contact Cabletron  
Systems Technical Support immediately. Save the original container and  
antistatic wrap in case the module needs to be repaired.  
6.2 ADDING A SWITCH MODULE  
If the switch module you are adding is different from the type of module  
that was in the slot earlier, or if the slot was vacant, you have to reboot the  
ATX so it will recognize the new module.  
If the module you are adding has a different number of ports than the  
module you are removing, before you can power cycle the ATX you  
must:  
Delete all static addresses  
Delete all ARP addresses and IP routing table entries  
Delete all filters  
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Chapter 6: Adding/Swapping Modules  
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.  
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 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 switch module’s front panel.  
7. Power on the ATX, and check the 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 A SWITCH MODULE  
When swapping identical modules, it is recommended that you remove  
power to the ATX. However, the switch module you are replacing must be  
taken offlline first, as described below:  
1. Take the switch module to be replaced offline, either by pressing the  
OFFLINE button on the switch module front panel, or by using the  
Local Console Manager offline command.  
2. Remove power from the ATX.  
3. Remove the network connections from the switch module. Note the  
ports to which the network connections attach.  
4. Loosen the screws at each end of the front panel of the switch module  
to be replaced.  
5. Remove the installed switch module by pulling gently, but firmly, on  
the ears at the ends of the module’s front panel.  
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Swapping a Switch Module  
6. Gently slide the new 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.  
7. Tighten the screws on each side of the switch module’s front panel.  
8. If you took the original module offlline by pressing the OFFLINE  
button, the new switch module will automatically come back online  
when it is inserted in the slot.  
If you used the Local Console Manager offline command to take the  
original module offline, you must use the onlinecommand to bring  
the new module online.  
9. Check the switch 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.  
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Chapter 6: Adding/Swapping Modules  
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APPENDIX A  
TECHNICAL SPECIFICATIONS  
Standards Compliance  
Ethernet Version 2  
IEEE 802.3, 802.3u, 802.2, 802.1(d), 100BASE-TX, 100BASE-FX  
Protocol Translations  
TCP/IP  
IPX  
AppleTalk Phase II  
Dimensions  
Length  
Width  
12.2 in. (30.99 cm)  
9.5 in. (24.13 cm)  
Weight  
approximately 1.375 lb. (.62 kg)  
Environmental Requirements  
Operating temperature  
Storage temperature  
Relative humidity  
5˚ C to 40˚ C (41˚ F to 104˚ F)  
-30˚ C to 90˚ C (-22˚ F to 194˚ F)  
0% to 95% non-condensing  
FE Switch Module User Guide  
Page A-1  
 
Appendix A: Technical Specifications  
Connectors  
3H02-04  
3H08-04  
RJ45 for UTP  
ST for Fiber Optics  
LEDs  
Power  
Processor (Processor status/ready)  
Link  
Collision  
Receive  
Transmit  
Bridging Domain  
Transparent  
Source Routing  
Source Routing Transparent  
Certifications  
Safety  
UL 1950, CSA C22.2 No. 950, EN 60950, and  
IEC 950  
Emission  
Immunity  
FCC Part 15 Class A, EN 55022 Class A, and  
VCCI Class I  
EN 50082-1  
Page A-2  
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APPENDIX B  
CABLES  
B.1 TYPES/CONNECTORS  
Depending on the type of switch module you are using, you’ll need to use  
specific cables, as described in the IEEE 802.3u specification, shown in  
the table below.  
Table B-1 Cable Types and Connectors  
Cable  
Type  
Male Connector  
100 Ohm UTP,  
22 - 26 AWG  
0.4 - 0.6 mm,  
2 pairs  
Twisted-Pair  
(UTP)  
8-pin RJ45  
ST  
Duplex Fiber  
62.5/125 Micron Core  
B.2 CABLE SPECIFICATIONS  
Table B-2 Twisted-Pair Cable Specifications  
Type 5 balanced UTP  
Type  
Number of Pairs  
2
Max. Link Segment Length  
Min. Link Segment Length  
Max. Number of Attachments  
328 ft (100 m)  
2.0 ft (0.6 m)  
2
Table B-3 Duplex Fiber Cable Specifications  
Type  
62.5/125 micron core multimedia fiber  
Max. Link Segment Length  
Min. Link Segment Length  
Max. Number of Attachments  
1.24 mi (2.0 Km)  
No minimum size  
2
FE Switch Module User Guide  
Page B-1  
 
Appendix B: Cables  
You can also choose to use 50/125, 80/125, or 100/140 micron  
NOTE  
core multimedia fiber; however, data in the table above applies  
only to the 62.5/125 type.  
B.3 FAST ETHERNET PIN ASSIGNMENTS  
B.3.1 About RJ45 Connectors  
If you’re connecting a 3H02-04 to another device, it’s required that you  
use only RJ45 connectors on the cabling. An Ethernet twisted-pair link  
and striped colored wires. For example, one wire in the pair might be red  
and the other wire, red with white stripes.  
You must connect each wire pair to the RJ45 connectors in a  
certain orientation (See “Crossover Wiring for the 3H02-04” on  
NOTE  
page B-3 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.  
1
8
1
1 2 3 4 5 6 7 8  
8
TX+  
TX-  
RX-  
RX+  
Figure B-1 RJ45 Connector Pin Numbers  
Each twisted-pair link segment must have an RJ45 male connector  
attached to both ends. According to the 100BASE-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.  
Page B-2  
FE Switch Module User Guide  
 
Fast Ethernet Pin Assignments  
Table B-4 RJ45 Crossover Pin Assignments  
*
RJ45 Pin  
Assignment  
1
2
3
6
Tx+  
Tx–  
Rx+  
Rx–  
*The “+” and “–” signs are used to represent the polarity  
of the two wires that make up each wire pair.  
B.3.2  
Crossover Wiring for the 3H02-04  
Two Ethernet 100BASE-TX devices can communicate only if the  
transmitter on one device is connected to the receiver on the other device.  
This reversal, or crossover function, can be implemented either in the  
wiring or in the device itself. The 3H02-04 contains an internal port  
crossover on the second connection of each port. This means that you can  
choose to use either crossover or straight-through cabling.  
When connecting two identical twisted-pair ports (i.e., both crossover  
ports or both straight-through ports), you must implement a crossover in  
the wiring. Refer to the following table for crossover wiring configuration  
for the 3H02-04.  
Table B-5 Crossover RJ45 Wiring Configuration  
Hub (pin number)  
Device (pin number)  
1
2
3
6
3
6
1
2
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Page B-3  
 
 
Appendix B: Cables  
B.3.3  
Straight-Through Wiring for the 3H02-04  
If the twisted-pair 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-6 Straight-Through RJ45 Wiring Configuration  
Hub (pin number)  
Device (pin number)  
1
2
3
6
1
2
3
6
B.3.4  
Limitations & Restrictions  
Between any two nodes (such as PCs or other stations) on the network,  
there may be limitations or restrictions that you should be aware of. For  
more information on any limitations or restrictions, see the IEEE 802.3  
specification.  
B.3.5  
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).  
Stack  
A method of interconnecting multiple hubs so that multiple hubs appear  
as one large hub or repeater to the network.  
Page B-4  
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INDEX  
A
L
adding modules 6-1  
attributes, configurable 3-1  
LEDs  
diagnostics 5-2  
power-up sequence 2-1  
types 1-4, 1-5  
limitations B-4  
B
bridging domains A-2  
P
C
pin assignments  
RJ45 crossover B-3  
cabling. See wiring  
certifications A-2  
configuring tools 3-1  
connecting to a network  
via the 3H02-04 2-2  
via the 3H08-04 2-3  
connectors A-2  
power-up tests 2-1  
protocol translations A-1  
S
specifications, technical A-1  
straight-through wiring B-4  
swapping modules 6-2  
D
definitions B-4  
diagnostics  
U
power-up 5-1  
results 5-1  
unpacking 6-1  
dimensions A-1  
displaying port status 4-1  
W
Wiring  
connectors B-1  
crossover wiring B-3  
Specifications B-1  
Straight-through B-4  
types B-1  
E
environmental requirements A-1  
F
filtering 3-2  
front panel  
3H02-04 1-4  
3H08-04 1-5  
ATX 1-1  
H
help 1-7  
FE Switch Module User Guide  
Index-1  
 
Index  
Index-2  
FE Switch Module User Guide  
 

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