3Com Network Router 6412M 25 TP User Manual

ONcore 12-Port 25 Mbps ATM I/O Module  
Installation and User's Guide  
Document Number: 17-00899-1  
August 1996  
Model Number: 6412M-25-TP  
3Com Corporation  
118 Turnpike Road  
Southborough, MA 01772-1886  
U.S.A.  
(508) 460-8900  
FAX: (508) 460-8950  
 
VCCI Class 1 Compliance  
This equipment is in the 1st Class category (information equipment to be  
used in commercial or industrial areas) and conforms to the standards set  
by the Voluntary Control Council for Interference by Information Technology  
Equipment aimed at preventing radio interference in commercial or  
industrial areas.  
Consequently, when the equipment is used in a residential area or in an  
adjacent area, radio interference may be caused to radio and TV receivers,  
and so on.  
Read the instructions for correct handling.  
Disclaimer  
The information in this document is subject to change without notice and  
should not be construed as a commitment by 3Com Corporation. 3Com  
Corporation assumes no responsibility for any errors that may appear in  
this document.  
Copyright Statement  
1996 by 3Com Corporation. All rights reserved. The information  
contained herein is the exclusive and confidential property of 3Com  
Corporation. No part of this manual may be disclosed or reproduced in  
whole or in part without permission from 3Com Corporation.  
iii  
 
Trademarks  
Because of the nature of this material, numerous hardware and software  
products are mentioned by name. In most, if not all cases, these product  
names are claimed as trademarks by the companies that manufacture the  
products. It is not our intent to claim these names or trademarks as our  
own.  
CELLplex is a trademark, and 3Com and ONcore registered trademarks of  
3Com Corporation.  
IBM and Nways are trademarks or service marks of the IBM Corporation in  
the United States or other countries.  
iv 25 Mbps ATM Module - Installation and User's Guide  
 
Contents  
Chapter 1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1  
6412M-25-TP Module Features . . . . . . . . . . . . . . . . . . . . . . . 1-1  
Module Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3  
Interfaces Supported . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3  
Using the 6412M-25-TP Module for ATM Campus Networking  
. . . . 1-4  
Chapter 2. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
. . . . . . . . . . . . . . . . . . . . . . 2-1  
Before You Unpack the Module  
Unpacking the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
Installation Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3  
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
Installing the Module in an ONcore Hub . . . . . . . . . . . . . . . . 2-4  
Installing the Module in a CELLplex 4000 Expansion Unit . . . . . . 2-7  
Connecting ATM Devices . . . . . . . . . . . . . . . . . . . . . . . . . 2-10  
Cabling Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10  
Connecting Devices to the ATM Ports . . . . . . . . . . . . . . . . 2-13  
Cables, Pins and Connectors . . . . . . . . . . . . . . . . . . . . . 2-15  
Chapter 3. Configuration . . . . . . . . . . . . . . . . . . . . . . . . . 3-1  
Configuring Port Parameters . . . . . . . . . . . . . . . . . . . . . . . 3-1  
Displaying Configuration Settings  
. . . . . . . . . . . . . . . . . . . . . 3-3  
Module Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3  
Port Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5  
Saving Configuration Settings  
. . . . . . . . . . . . . . . . . . . . . . . 3-5  
Connecting the Module to the Network . . . . . . . . . . . . . . . . . 3-6  
Verifying Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . 3-7  
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8  
Chapter 4. Troubleshooting  
. . . . . . . . . . . . . . . . . . . . . . . 4-1  
Verifying LED Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
. . . 4-2  
. . . . . . . . . 4-5  
Port Status LED Does Not Light Green or Is Blinking When Idle  
Port Status LED Does Not Light Yellow During Traffic  
When the Reset LED Is ON or Starts Blinking . . . . . . . . . . . . . . 4-7  
Contents v  
 
When the Wrong Slot LED Is ON (ONcore only) . . . . . . . . . . . . . 4-8  
Determining the Failing Component Using a Wrap Test . . . . . . . . 4-9  
Replacing 6412M-25-TP Modules . . . . . . . . . . . . . . . . . . . . 4-10  
Appendix A. Technical Specifications . . . . . . . . . . . . . . . . . A-1  
General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1  
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1  
Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . A-1  
Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . A-2  
Appendix B. ATM Components . . . . . . . . . . . . . . . . . . . . . B-1  
Appendix C. Technical Support . . . . . . . . . . . . . . . . . . . . . C-1  
Online Technical Services . . . . . . . . . . . . . . . . . . . . . . . . . . C-1  
3Com Bulletin Board Service  
. . . . . . . . . . . . . . . . . . . . . . C-1  
World Wide Web Site . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3  
3ComForum on CompuServe . . . . . . . . . . . . . . . . . . . . . . C-3  
3ComFacts Automated Fax Service  
. . . . . . . . . . . . . . . . . . C-3  
Support From Your Network Supplier . . . . . . . . . . . . . . . . . . . C-5  
Support From 3Com Corporation . . . . . . . . . . . . . . . . . . . . . . C-5  
Returning Products for Repair  
Accessing the 3Com ISD MIB  
. . . . . . . . . . . . . . . . . . . . . . . C-7  
. . . . . . . . . . . . . . . . . . . . . . . C-8  
Contacting 3Com ISD Technical Publications  
. . . . . . . . . . . . . . C-8  
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-1  
Limited Warranty  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-3  
vi 25 Mbps ATM Module - Installation and User's Guide  
 
Figures  
1-1. ATM Campus Networking . . . . . . . . . . . . . . . . . . . . . 1-4  
2-1. Installing the Module in an ONcore Hub . . . . . . . . . . . . 2-5  
2-2. ONcore Module Ejectors . . . . . . . . . . . . . . . . . . . . . 2-6  
2-3. Removing a Blank Panel . . . . . . . . . . . . . . . . . . . . . 2-7  
2-4. CELLplex 4000 Module Ejectors . . . . . . . . . . . . . . . . . 2-8  
2-5. Installing the Module in a CELLplex 4000 Expansion Unit . . 2-9  
2-6. RJ-45 Connector . . . . . . . . . . . . . . . . . . . . . . . . . 2-15  
2-7. Straight-Through UTP Cable . . . . . . . . . . . . . . . . . . 2-16  
2-8. Attaching ATM Devices . . . . . . . . . . . . . . . . . . . . . 2-17  
3-1. Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10  
Figures vii  
 
viii 25 Mbps ATM Module - Installation and User's Guide  
 
Tables  
2-1. Installation Steps . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3  
2-2. UTP/FTP/STP Cabling Details . . . . . . . . . . . . . . . . . 2-11  
2-3. ATM Device Cabling Distances  
. . . . . . . . . . . . . . . . 2-12  
. . . . . . . . . . 2-15  
2-4. RJ-45 Connector-Pin Signal Assignments  
2-5. Pin Assignments for Cabling Non-ATM Forum Compliant  
Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17  
3-1. Meaning of the Front Panel LEDs . . . . . . . . . . . . . . . . 3-8  
4-1. Problem Determination Using Port Status LEDs . . . . . . . . 4-3  
4-2. Problem Determination Using Port Status LEDs during Traffic 4-6  
4-3. Problem Determination Using the Module Reset LED  
. . . . 4-7  
B-1. Part Numbers of ATM Components . . . . . . . . . . . . . . . B-1  
Tables ix  
 
x 25 Mbps ATM Module - Installation and User's Guide  
 
How to Use This Guide  
This guide presents information on how to install and configure the 3Com  
ONcore ATM I/O Module (6412M-25-TP) in the ONcore Integrated  
System Hub or CELLplex 4000 expansion unit. It describes how to:  
Plan and set up valid links in an ONcore hub or CELLplex 4000 based  
ATM subnetwork using the 6412M-25-TP module  
Install the 6412M-25-TP module  
Configure the 6412M-25-TP module  
Diagnose and solve problems associated with the operation of the  
6412M-25-TP module.  
Who Should Use This Guide  
This guide is intended for the following people at your site:  
ATM network administrator  
ATM network operator  
Hardware installer  
The installation activities described in this book should be undertaken by  
Trained Service Personnel ONLY.  
How to Use This Guide xi  
 
Contents of This Guide  
This guide contains four chapters and three appendixes:  
Chapter 1, Overview gives an overview of the main functions of the  
6412M-25-TP module and the ATM interface used by ONcore 12-Port 25  
Mbps ATM I/O Module ports to interconnect user devices to an ATM  
campus network.  
Chapter 2, Installation describes how to install the 6412M-25-TP module  
in an ONcore hub and CELLplex 4000 expansion unit.  
Chapter 3, Configuration describes how to configure the 6412M-25-TP  
module.  
Chapter 4, Troubleshooting describes how to diagnose and solve  
problems associated with the operation of the 6412M-25-TP module.  
Appendix A, Technical Specifications describes the specifications for the  
6412M-25-TP module.  
Appendix B, ATM Components lists the part numbers for the ATM  
components that you can order for use with the 6412M-25-TP module.  
Appendix C, Technical Support provides information on technical support  
services available from 3Com.  
The Index lists the concepts, terms, and tasks described in this guide and  
the page numbers on which you can find the information.  
xii 25 Mbps ATM Module - Installation and User's Guide  
 
Terms Used in This Guide  
The term ATM Control Point used in this guide refers to the ATM Control  
Point located in either the ONcore ATM Switch/Control module or CELLplex  
4000 base unit.  
The term Command Reference Guide used in this guide refers to the  
ONcore ATM Switch and CELLplex 4000 Command Reference Guide,  
17-00866.  
Prerequisite Knowledge  
To understand the information presented in this guide, refer to:  
Features and Characteristics of the ONcore Integrated System Hub, as  
described in the 3Com ONcore Integrated System Hub Installation  
Guide, Document Number: 17-00362.  
Features and Characteristics of the CELLplex 4000, as described in  
CELLplex 4000 Installation and User's Guide, Document Number:  
17-00865.  
Publications listed in the section “Related Documents” on page xv.  
ATM Forum UNI Specification V3.0 and V3.1.  
How to Use This Guide xiii  
 
Conventions Used in This Guide  
The following text conventions are used in this guide:  
Text  
Meaning  
Example  
Convention  
Bold  
Text emphasis  
Selective backpressure temporarily  
stops one virtual connection.  
Global backpressure temporarily  
stops an ATM link.  
Italics  
Special term  
This is known as a hot swap.  
Document titles  
Refer to the ATM User-Network  
Interface Specification - Version 3.0  
for more information.  
Monospace  
Command syntax SET PORT slot.port ENABLE  
(parameters and  
variables)  
User input  
To display detailed information,  
enter the following command:  
(including  
carriage return)  
show port 4.2 verbose [ENTER]  
System  
Port Type Mode  
Status  
messages and  
screen displays  
---------------------------------------------  
4. 2 NNI enabled UP-OKAY  
xiv 25 Mbps ATM Module - Installation and User's Guide  
 
Related Documents  
This section provides information on supporting documentation, including:  
3Com Documents  
Reference Documents  
3Com Documents  
The following documents provide additional information on 3Com products:  
ONcore Integrated System Hub Installation and Operation Guide - Provides  
information on the installation, operation, and configuration of the ONcore  
hub. This guide also describes the principal features of the ONcore  
Fault-Tolerant Controller Module.  
CELLplex 4000 Installation and User's Guide - Provides information on the  
installation, operation, and configuration of the CELLplex 4000.  
ONcore Distributed Management Module User's Guide - Provides  
information on the ONcore Distributed Management Module's operation,  
installation, and configuration. This guide also describes the software  
commands associated with the Distributed Management Module.  
Distributed Management Module Commands Guide - Describes each  
management command by providing detailed information on the  
command's format, use, and description.  
ONcore ATM Switch and CELLplex 4000 Command Reference Guide -  
Describes each ATM command by providing detailed information on the  
command's format, use, and description.  
For a complete list of 3Com documents, contact your 3Com representative.  
How to Use This Guide xv  
 
Reference Documents  
The following documents supply related background information:  
Case, J., Fedor, M., Scoffstall, M., and Davin, J., The Simple Network  
Management Protocol, RFC 1157, University of Tennessee at Knoxville,  
Performance Systems International and the MIT Laboratory for Computer  
Science, May 1990.  
Rose, M., and K. McCloghrie, Structure and Identification of Management  
Information for TCP/IP-based internets, RFC 1155, Performance Systems  
International and Hughes LAN Systems, May 1990.  
xvi 25 Mbps ATM Module - Installation and User's Guide  
 
Chapter 1. Overview  
This chapter presents an overview of the ONcore 12-Port 25 Mbps ATM I/O Module  
(6412M-25-TP). It describes the main functions of the module, and how the module  
operates as part of the ATM subsystem when installed in the ONcore Integrated System  
Hub or CELLplex 4000 Expansion Unit.  
6412M-25-TP Module Features  
The 6412M-25-TP module is a single-slot module that functions as part of the ONcore  
ATM or CELLplex 4000 Expansion Unit.  
Chapter 1. Overview 1-1  
 
6412M-25-TP modules can be used in any of the following ways:  
To send and receive data from an ATM subsystem in another ONcore ATM  
switching hub or CELLplex 4000.  
To attach high capacity workstations and servers (with 25.6Mbps adapter cards)  
that function in ATM mode.  
6412M-25-TP modules interface to the ONcore hub or CELLplex 4000 by means of the  
Control Point located in either the ONcore ATM Switch/Control module or CELLplex  
4000 base unit. 6412M-25-TP modules process ATM cells of data by:  
Checking their validity  
Accessing the switching tables to locate the destination module  
Preparing the internal ATM format required by the Control Point  
Sending the cells to the Control Point  
6412M-25-TP modules can be used in any vacant slot in the CELLplex 4000 expansion  
unit, or any vacant slot in the ONcore hub except for slots 9, 10, and (for 17-slot  
models) 11 and 12. These slots are reserved for ONcore ATM Switch/Control modules.  
In 17-slot ONcore models, although slot 12 is also reserved, you can insert an  
6412M-25-TP module in slot 12 if no ONcore ATM Switch/Control module is installed in  
slot 11.  
Like other ATM media modules, the 6412M-25-TP module can be inserted while the  
hub or CELLplex 4000 is operating without disturbing data traffic on other modules.  
Before removing the module however, you must first isolate it by using the SET  
MODULE command.  
For more information on how to install and change modules, see the ONcore Integrated  
System Hub Installation Guide, Document Number 17-000362 or CELLplex 4000  
Installation and User's Guide Document Number 17-000865, as appropriate.  
1-2 25 Mbps ATM Module - Installation and User's Guide  
 
Module Functions  
The 6412M-25-TP module has the following characteristics:  
Twelve ports operating at up to 25 Mbps to connect stations or servers to the hub  
or CELLplex 4000. Each port may connect to:  
– An ATM or multimedia workstation that requires a high bit rate (UNI connection)  
– A UNI device using a supported interface  
Physical interface: copper cable with RJ45 connector.  
ONcore 12-Port 25 Mbps ATM I/O Module connections: port-to-port, hub-to-server,  
and hub-to-workstation.  
Up to three 6412M-25-TP modules can be used in the CELLplex 4000 expansion  
unit, thereby providing up to 48 ATM ports.  
Up to fourteen 6412M-25-TP modules can be used in the 17-slot ONcore hub at the  
same time (8 in the 10-slot ONcore hub).  
Interfaces Supported  
The 6412M-25-TP module supports the following interfaces:  
User-to-network (UNI)  
Network-to-network (NNI)  
Switch-to-switch (SSI)  
The UNI interface is defined in the following documents:  
ATM Forum UNI Specification V3.0 and V3.1  
ITU (ex-CCITT) SG13 as defined in the following standards:  
– I.413 (B_ISDN User-Network Interface)  
– I.432 (Physical Layer)  
– Q.2931 (Signaling)  
Chapter 1. Overview 1-3  
 
Using the 6412M-25-TP Module for ATM Campus  
Networking  
The 6412M-25-TP module can be used as a link to an ATM campus network by  
allowing workstations, servers, and other ATM devices to communicate with the  
network.  
Figure 1-1. ATM Campus Networking  
1-4 25 Mbps ATM Module - Installation and User's Guide  
 
Chapter 2. Installation  
This chapter describes how to unpack, install, and connect ATM devices to the  
6412M-25-TP module.  
Before You Unpack the Module  
Take the following precautions before unpacking the 6412M-25-TP module:  
Do not remove the 6412M-25-TP module from its anti-static shielding bag until you  
are ready to install it. This avoids the possibility of having electrostatic discharge  
damage static-sensitive devices on the module.  
Always handle the module by the edges.  
Always use a foot strap and grounded mat or wear a grounded static discharge  
wrist strap whenever you inspect or install or remove the module. Or else, be sure  
to touch a grounded rack or another source of ground before handling it.  
Chapter 2. Installation 2-1  
 
Unpacking the Module  
To unpack the 6412M-25-TP module, follow these steps:  
1. Verify that the 6412M-25-TP module is the correct model by matching the model  
number listed on the side of the shipping carton to the model number you ordered.  
Note: The product model number printed on the shipping box differs from the  
model number on the product. The model number on the shipping box bears the  
prefix 3C9.  
2. Remove the module from its shipping carton.  
3. Remove the 6412M-25-TP module from its anti-static bags and inspect it for  
damage. Always handle it by the edges, being careful not to touch the internal  
components.  
If the module appears to be damaged, put it back in the anti-static bag, put the bag  
back into the shipping carton, then contact your local 3Com dealer.  
It is recommended that you retain the shipping carton and the anti-static shielding bag  
in which the module was delivered. These can be reused later if you want to repackage  
the components for storage or shipment.  
2-2 25 Mbps ATM Module - Installation and User's Guide  
 
Installation Summary  
Note: The installation activities described in the following sections should be  
undertaken by TRAINED SERVICE PERSONNEL ONLY.  
Table 2-1 lists the steps to follow to install the 6412M-25-TP module. Each step is  
described in detail in this chapter.  
Note: Before installing an 6412M-25-TP module in an ONcore switching hub, make  
sure that an ONcore ATM Switch/Control module is installed in slots 9 and 10 (or 11  
and 12 in a 17 slot model), and that an ONcore ATM Switch/Control console has  
already been configured. If an ONcore ATM Switch/Control module is not installed, the  
Reset LED on the 6412M-25-TP module will start blinking when you insert the module.  
Table 2-1. Installation Steps  
Step  
Refer to  
1. Insert the 6412M-25-TP module into a vacant slot:  
“Installing the Module in  
an ONcore Hub” on  
page 2-4 (ONcore)  
ONcore:  
1 to 8 on 10-slot models (or 1 to 8, 12 to  
17 on 17-slot models).  
CELLplex 4000: Any vacant slot in the expansion unit.  
“Installing the Module in a  
CELLplex 4000  
Expansion Unit” on  
page 2-7 (CELLplex  
4000)  
2. Set up connections between the ONcore 12-Port 25  
Mbps ATM I/O Module ports and other ATM devices using  
the appropriate Twisted Pair (TP) cables and connectors.  
“Connecting ATM  
Devices” on page 2-10  
Chapter 2. Installation 2-3  
 
Installation  
You can install the 6412M-25-TP module while the ONcore hub or CELLplex 4000  
expansion unit are powered on.  
Installing the Module in an ONcore Hub  
To install a 6412M-25-TP module in an ONcore hub, follow these steps:  
1. Locate a vacant slot in positions 1 to 8 (or 12 to 17 in 17 slot models). (Slots 9 and  
10 are reserved for the ONcore ATM Switch/Control module. You cannot install the  
6412M-25-TP module in slot 11.) If necessary, remove a panel on the hub to  
expose a blank slot.  
2. Make sure that the slot to be used is in Isolated mode by entering the following  
command from the ONcore ATM Switch/Control console:  
SET MODULE slot ISOLATED  
where slotspecifies the number of the slot to be used. For more information, see  
the ONcore Integrated System Hub Installation Guide, Document Number  
17-000362.  
3. Insert the 6412M-25-TP module into one of the free slots in the hub as shown in  
Figure 2-1 on page 2-5, matching the top and bottom board guides as you slide the  
module cleanly into place (by pressing evenly on the top and bottom of the  
faceplate). Do not attempt to push the module all the way into the hub until you  
have verified that the top and bottom module ejectors are OPEN (see Figure 2-2 on  
page 2-6.)  
2-4 25 Mbps ATM Module - Installation and User's Guide  
 
1
2
3
4
5
6
7
8
9
10 1112 13 14 15 1617  
Slots  
Figure 2-1. Installing the Module in an ONcore Hub  
Chapter 2. Installation 2-5  
 
4. Close the top and bottom ejectors simultaneously.  
Figure 2-2. ONcore Module Ejectors  
5. The Reset LED should light ON briefly, and then turn OFF.  
6. Fasten the spring-loaded screws on the front panel of the module to the hub using  
your fingers. Do not overtighten.  
2-6 25 Mbps ATM Module - Installation and User's Guide  
 
Installing the Module in a CELLplex 4000 Expansion Unit  
To install a 6412M-25-TP module in a CELLplex 4000 expansion unit, follow these  
steps:  
1. Locate a vacant slot in the expansion unit. If the slot is filled with a blank panel,  
loosen the knurled screws on both sides of the cover and remove it from the front  
panel of the expansion unit.  
Figure 2-3. Removing a Blank Panel  
Store the blank panel in a safe place in case the ATM media module needs to be  
removed in the future.  
Chapter 2. Installation 2-7  
 
2. Make sure that the slot to be used is in Isolated mode by entering the following  
command from the ATM console:  
SET MODULE slot ISOLATED  
where slotspecifies the number of the slot to be used. For more information, see  
the CELLplex 4000 Installation and User's Guide.  
3. Make sure that the two module ejectors (left and right) are OPEN (see Figure 2-4.)  
Figure 2-4. CELLplex 4000 Module Ejectors  
2-8 25 Mbps ATM Module - Installation and User's Guide  
 
4. Insert the 6412M-25-TP module into one of the free slots in the expansion unit as  
shown in Figure 2-5, matching the left and right board guides as you slide the  
module cleanly into place (by pressing evenly on the top and bottom of the  
faceplate).  
Figure 2-5. Installing the Module in a CELLplex 4000 Expansion Unit  
5. Close the left and right ejectors simultaneously. This secures the module.  
6. The Reset LED should light ON briefly, and then turn OFF.  
7. Fasten the spring-loaded screws on the front panel of the module to the expansion  
unit using your fingers. Do not overtighten.  
Chapter 2. Installation 2-9  
 
Connecting ATM Devices  
After inserting the module, attach the cables to the ATM ports that will connect to ATM  
devices.  
Cabling Up  
The following sections provide instructions and guidelines for connecting ATM devices  
(such as switches, servers, personal computers, and workstations). Remember these  
tips when connecting cables:  
Avoid stretching and bending the cables too much.  
Avoid routing the cables near potential sources of electromagnetic interference,  
such as motorized devices and fluorescent lights.  
Avoid trip hazards by routing the cables away from aisles and other areas where  
people walk. If such routes cannot be avoided, use floor cable covers or similar  
material to secure and protect the cables.  
Be sure that the cables connected to the 6412M-25-TP module are supported so  
that the cable connectors are not excessively strained. The cable management  
bracket shipped with the ONcore hub or CELLplex 4000 expansion unit helps  
prevent strain on the cables.  
Use a Category 3 or better UTP cable or a 150-ohm STP cable for each of the ATM  
ports.  
2-10 25 Mbps ATM Module - Installation and User's Guide  
 
UTP/FTP/STP Cabling Information  
Table 2-2 details the accepted UTP/FTP/STP cables for the 25.6 Mbps ATM ports.  
Table 2-2. UTP/FTP/STP Cabling Details  
Cable  
Type  
Impedance  
Category  
Trunk  
Patch  
RFI  
Attenuation  
@ 100 MHz  
Attenuation  
@ 100 MHz  
Class  
UTP-5  
100 ohm  
100 ohm  
120 ohm  
150 ohm  
5 / Class D  
5 / Class D  
5 / Class D  
22db MAX /  
100m  
33db MAX /  
100m  
A
B
B
B
FTP/SFTP  
FTP/SFTP  
STP  
22db MAX /  
100m  
33db MAX /  
100m  
17db MAX /  
100m  
25db MAX /  
100m  
IBM  
IBM type  
1/1A  
IBM type  
6/6A  
Cabling  
12.3db MAX  
/ 130m  
18.4db MAX  
/ 130m  
Legend:  
UTP-5 Unshielded Twisted Pair (Category 5)  
FTP Foiled Twisted Pair  
SFTP Screened and Foiled Twisted Pair  
STP Shielded Twisted Pair  
TRUNK rigid cable  
PATCH flexible cable  
Chapter 2. Installation 2-11  
 
Cabling Distances  
Table 2-3 lists the maximum cabling distances for devices attached to the 25.6-Mbps  
ATM ports.  
Table 2-3. ATM Device Cabling Distances  
Cable Type  
UTP Category 3  
UTP Category 4  
UTP Category 5  
STP  
Maximum Allowable Distance (meters)  
100 (330 ft)  
150 (495 ft)  
160 (528 ft)  
300 (990 ft)  
Note: The minimum UTP cable quality must meet EIA/TIA-568 specification for  
Category 3 or equivalent UTP wiring.  
2-12 25 Mbps ATM Module - Installation and User's Guide  
 
Connecting Devices to the ATM Ports  
You can connect devices to the ATM ports either through the building wiring or by a  
direct connection.  
Via Building Wiring  
To connect an ATM device via building wiring, follow the steps listed below.  
Note: This procedure begins with the cabling of the ATM device (such as a 25.6-Mbps  
ATM adapter installed in a workstation) to the building faceplate; then it describes  
connecting the ONcore switching hub or CELLplex 4000 to the patch panel in the wiring  
closet.  
1
2
Look at the cabling chart, which your network planner provided, to determine  
how the ONcore switching hub or CELLplex 4000 should be connected to the  
network.  
In the work area, connect one end of a straight-through cable (with  
ATM-compliant pin assigments) to the ATM connector on the device and the  
other end to the ATM connector on the faceplate where the building wiring  
terminates.  
3
4
5
Label the faceplate if it does not already have a cable label. Follow your  
enterprise’s procedures for cable labeling. If there is more than one wiring  
closet on a floor, record on the same line, the wiring closet identifier or  
location and the cable identifier.  
In the wiring closet, connect the cable that originated at the ATM device to  
the appropriate connector on the patch panel or other equipment where the  
building wiring terminates. Connect the other end of the cable to an ATM  
port on the 6412M-25-TP module.  
Label the connector on the patch panel (or other equipment used to  
terminate the building wiring).  
Chapter 2. Installation 2-13  
 
Direct Cabling  
To cable an ATM device directly to the 6412M-25-TP module:  
1
2
3
Look at the cabling chart, which your network planner provided, to determine  
how the ONcore hub or CELLplex 4000 should be connected to the network.  
Connect the cables between the 6412M-25-TP module and other devices as  
indicated by the connections in the cabling chart.  
Label the cables, following your enterprise’s procedures for cable labeling.  
2-14 25 Mbps ATM Module - Installation and User's Guide  
 
Cables, Pins and Connectors  
Each of the ATM ports on the 6412M-25-TP module connects to other ATM devices  
using an 8-pin female RJ-45 connector. The sections below describe the male RJ-45  
plug and the twisted-pair cables that attach to this connector.  
RJ-45 Connector  
The RJ-45 connector is the 8-pin female connector on the CELLplex 4000 that attaches  
to UTP Category 3, 4, or 5 cable or STP category 1, 1A, 9, or 9A cable. Table 2-4 lists  
the signal name associated with each pin on this connector, and Figure 2-6 shows how  
the pins are numbered.  
Table 2-4. RJ-45 Connector-Pin Signal Assignments  
Pin Number  
Signal Name  
RD+  
1
2
RD-  
3-4-5-6  
Frame Ground  
TD+  
7
8
TD-  
Figure 2-6. RJ-45 Connector  
Chapter 2. Installation 2-15  
 
Twisted-Pair Cable  
Figure 2-7 on page 2-16 below shows the pin-outs for the straight-through cable  
required for connecting ATM Forum compliant devices via UNI interface to the ports on  
the 6412M-25-TP module.  
Note: Pins 3, 4, 5, and 6 are not used and are grounded on the chassis.  
RJ-45  
RJ-45  
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Figure 2-7. Straight-Through UTP Cable. Note that one cable connects pins 1 and  
2 and the other cable connects pins 7 and 8. You will cause an error if you  
cable any other active pins together, such as 1 and 7, 1 and 8, 7 and 2, or 8  
and 2.  
Non-ATM Forum Compliant (UNI) Devices: To connect non-ATM Forum compliant  
devices to the 6412M-25-TP module you must build a twisted-pair cable that connects  
the pins as listed in Table 2-5 on page 2-17.  
2-16 25 Mbps ATM Module - Installation and User's Guide  
 
Table 2-5. Pin Assignments for Cabling Non-ATM Forum Compliant  
Devices  
6412M-25-TP Module Port  
Non-Compliant 25.6-Mbps Device  
1
2
7
8
RD+  
RD-  
TD+  
TD-  
3
6
4
5
TD+  
TD-  
RD+  
RD-  
1
2
A2-MB155  
Figure 2-8. Attaching ATM Devices  
Chapter 2. Installation 2-17  
 
2-18 25 Mbps ATM Module - Installation and User's Guide  
 
Chapter 3. Configuration  
After installing the 6412M-25-TP module and attaching media cables to ATM devices,  
you must enter configuration commands from the ATM console to:  
Configure the ports parameters.  
Connect the module to the network.  
Enable the ports.  
This section describes the ATM commands you need to enter to configure each  
6412M-25-TP module in the ways described above. For a complete description of all  
ATM commands, see the ONcore ATM Switch and CELLplex 4000 ATM Command  
Reference Guide (hereafter referred to simply as the Command Reference Guide).  
Configuring Port Parameters  
The 6412M-25-TP module uses the user-to-network (UNI) interface. A UNI interface  
defines the interface between an ATM user device (such as a router, bridge, server,  
workstation, or concentrator equipped with an ATM adapter) and the ATM network.  
Before you connect a 6412M-25-TP module to the ATM network (as described in  
“Connecting the Module to the Network” on page 3-6) and enable its ports, you must  
first set the type of ATM interface used on each port (UNI).  
In addition, you can switch ILMI flow control on or off, and specify the ILMI  
characteristics.  
When a port is enabled, it can transmit and receive cells in the ATM network. The port's  
parameters should be configured before the port is enabled.  
Chapter 3. Configuration 3-1  
 
To set individual port parameters, enter the following command at the ATM console  
prompt. The parameters may be entered in any order.  
SET PORT slot.port mode type flow_control ilmi  
slot  
Slot number of the 6412M-25-TP module.  
ATM port number.  
port  
mode  
type  
enableor disable. Enter disableuntil the port has been configured.  
Type of interface used: UNI(user-to-network), NNI(network-to-network),  
or SSI(switch-to-switch). Default: Last value entered.  
flow_control Used to activate or deactivate the ILMI flow control for this port:  
FLOW_CONTROL:ON  
activates ILMI flow control (GFC field of the cell  
header)  
FLOW_CONTROL:OFF deactivates ILMI flow control.  
Default: Last value entered.  
ilmi  
Specifies the ILMI characteristics for this port:  
ILMI:NORMAL  
ILMI active with automatic detection of the  
signalling protocol version (UNI 3.0 or UNI 3.1).  
ILMI address registration is normally performed.  
ILMI:FORCED_SIG_3. UNI 3.0 signalling is forced, and ILMI address  
registration active.  
ILMI:FORCED_SIG_3.1UNI 3.1 signalling is forced, and ILMI address  
registration active.  
ILMI:OFF_SIG_3.  
UNI 3.0 signalling is forced, and ILMI address  
registration inactive.  
ILMI:OFF_SIG_3.1 UNI 3.1 signalling is forced, and ILMI address  
registration inactive.  
Default: Last value entered.  
3-2 25 Mbps ATM Module - Installation and User's Guide  
 
Example  
The following example configures port 2 of the 6412M-25-TP module installed in slot 1.  
ONcoreATM> set port 1.2 uni  
[ENTER]  
ONcoreATM> Port set.  
ONcoreATM> show port 1.2 verbose  
[ENTER]  
Type Mode  
Status  
-------------------------------------------------------------------------------  
1. 2:UNI enabled UP-OKAY  
Signalling Version : with ILMI  
Flow Control  
Connector  
Media  
: Off  
: RJ-45  
: copper twisted pair  
Remote device is active  
IX status  
Port speed  
: IX OK  
: 256 Kbps  
ONcoreATM>  
Displaying Configuration Settings  
The following sections describes how to display information about the module and its  
port configurations. By displaying this information, you can check that the module is  
properly configured before connecting it to the network.  
Module Information  
To display status information about a 6412M-25-TP module, use the SHOW MODULE  
command.  
Chapter 3. Configuration 3-3  
 
For example, to display configuration information about the 6412M-25-TP module in slot  
2, you would enter the following command:  
ONcoreATM> show module 2 verbose  
Slot Install Connect Operation General Information  
-------------------------------------------------------------------  
2
Y
Y
Y
ONcore 12-Port 25 Mbps ATM I/O Module  
status: connected / hardware okay  
enable / normal  
P/N:xxxxxxx EC level:xxxxxx Manufacturer:xxxx  
Operational FPGA version : 1  
Backup FPGA version : 1  
Type Mode  
Status  
-------------------------------------------------------------------  
2. 1:UNI enabled UP-OKAY  
2. 2:UNI enabled UP-NO ACTIVITY  
2. 3:UNI enabled UP-NO ACTIVITY  
2. 4:UNI enabled UP-OKAY  
2. 5:UNI enabled UP-OKAY  
2. 6:UNI enabled UP-OKAY  
2. 7:UNI enabled UP-NO ACTIVITY  
2. 8:UNI enabled UP-NO ACTIVITY  
2. 9:UNI enabled UP-NO ACTIVITY  
2.1 :UNI enabled UP-NO ACTIVITY  
2.11:UNI enabled UP-NO ACTIVITY  
2.12:UNI enabled UP-NO ACTIVITY  
2.13:NOT INSTALLED  
ONcoreATM>  
If the value for port statusindicates that the port is inoperational or not functioning  
properly (for example, NOT IN SERVICEor NO ACTIVITY), refer to the chapter called  
"Troubleshooting", in the ONcore ATM Switch/Control Module Installation and User's  
Guide, Document Number 17-00616.  
For more information on the SHOW MODULE command, see the Command Reference  
Guide.  
3-4 25 Mbps ATM Module - Installation and User's Guide  
 
Port Information  
To display status information about the ports of an 6412M-25-TP module, use the  
SHOW PORT command.  
The following example shows how to display detailed information about port 1 of the  
6412M-25-TP module in slot 1:  
ONcoreATM> show port 1.1 verbose  
Port display for ONcore 12-Port 25 Mbps ATM I/O Module  
Type Mode  
Status  
------------------------------------------------------------------------------  
1. 1:UNI enabled UP-NO ACTIVITY  
Signalling Version : with ILMI  
Flow Control  
Connector  
Media  
: Off  
: RJ45  
: copper twisted pair  
Remote device is active  
IX status  
Port speed  
: IX OK  
: 256 Kbps  
ONcoreATM>  
For more information on the SHOW PORT command, see the Command Reference  
Guide.  
Saving Configuration Settings  
After configuring the 6412M-25-TP module and port settings, save the settings by  
entering the SAVE MODULE_PORT command.  
Chapter 3. Configuration 3-5  
 
Connecting the Module to the Network  
When you install an 6412M-25-TP module, it is by default set to Isolated mode and all  
of its ports are disabled. When a module is isolated, no network activity takes place on  
it and it cannot be accessed by the network. This is a security measure that protects  
your ATM network from unauthorized access and module dysfunction.  
To establish the module's connection to the network, enter the following command at  
the ATM console prompt:  
SET MODULE slot CONNECTED  
where slotspecifies the slot number of the ONcore 12-Port 25 Mbps ATM I/O module.  
The module's ports will not be enabled. This allows you to configure individual ports  
before enabling them. If you wish to enable all ports using the current values (either  
the default values if the module has not been used, or the previous values entered),  
enter the following command:  
SET MODULE slot CONNECTED ENABLE  
If you wish to enable individual ports using the current values (either the default values  
if the module has not been used, or the previous values entered), enter the following  
command:  
SET PORT slot.port ENABLE  
3-6 25 Mbps ATM Module - Installation and User's Guide  
 
Verifying Module Operation  
After configuring and saving 6412M-25-TP module and port settings, you can verify that  
the module is operating correctly by viewing the LEDs on the front panel:  
The Port Status light should be lit (Green if no traffic, Yellow when traffic is present)  
The Module Reset LED should be off.  
The Wrong Slot LED should be off.  
Table 3-1 on page 3-8 provides a full description of the front panel LEDs.  
Note: The 155M LEDs are reserved for future use.  
Chapter 3. Configuration 3-7  
 
Front Panel  
ATM connections are made through the 6412M-25-TP module by means of the ports on  
its front panel and its backplane interfaces. The front panel is shown in Figure 3-1 on  
page 3-10. The meaning of each LED is shown in Table 3-1.  
By pressing the Module Reset button, you interrupt and reset the operation of the  
6412M-25-TP module. All ATM data traffic and connections that are being transmitted  
are stopped, and the Reset LED lights while the reset is performed. The change in  
status of the 6412M-25-TP module (from normal operation to reset status) is reported to  
the ATM Control Point.  
Table 3-1 (Page 1 of 2). Meaning of the Front Panel LEDs  
LED Name  
Color  
State  
Meaning  
Port Status  
None  
OFF  
Port is disabled or there is no  
traffic.  
Green  
ON  
Port is enabled and there is a  
connection.  
Blinking  
Port is enabled, but either no  
cable is connected or the cable  
is damaged, or there is no  
station at the other end of the  
connection.  
Yellow  
Yellow  
ON  
Normal operation (traffic  
detected).  
(or blinking)  
Module Reset  
OFF  
Normal operation. Module is  
not being reset.  
ON  
Module is being reset; data  
traffic is interrupted.  
Blinking  
No 6416SW installed or module  
faulty.  
3-8 25 Mbps ATM Module - Installation and User's Guide  
 
Table 3-1 (Page 2 of 2). Meaning of the Front Panel LEDs  
LED Name  
Color  
State  
Meaning  
Wrong Slot  
Yellow  
OFF  
Normal operation.  
ON  
Module is installed in an  
(ONcore  
only)  
incorrect slot and no power is  
reaching the module. Check  
that the module is installed in  
the correct slot slot (1 to 8 on  
10-slot models, 1 to 8 and 12 to  
17 on 17-slot models).  
See Chapter 4, “Troubleshooting” on page 4-1 if:  
A Port Status LED does not light or is blinking.  
The Reset LED is ON or is blinking.  
The Wrong Slot LED is ON.  
Chapter 3. Configuration 3-9  
 
Port Status LEDs  
Module Reset LED  
Module Reset Button  
ATM Ports  
Wrong Slot LED  
6412M-25-TP  
Figure 3-1. Front Panel  
3-10 25 Mbps ATM Module - Installation and User's Guide  
 
Chapter 4.  
Troubleshooting  
This chapter describes how to diagnose and solve problems that may arise with the  
operation of an 6412M-25-TP module. These problems are signaled by the following  
conditions:  
The Port Status LED of a port does not light green, or is blinking, when idle  
(connected and enabled but no traffic).  
The Port Status LED of a port does not light yellow during data transmission.  
The Reset LED is either ON or blinking.  
The Wrong Slot LED is ON.  
Before you start troubleshooting, be sure to carry out the procedure described in  
“Verifying LED Operation.”  
When instructed to replace an 6412M-25-TP module, proceed as described in  
“Replacing 6412M-25-TP Modules” on page 4-10.  
Verifying LED Operation  
Before troubleshooting an 6412M-25-TP module, verify that all LEDs on the module are  
functioning properly:  
ONcore  
Press the LED Test button on the Fault-Tolerant Controller module in  
the ONcore hub.  
CELLplex 4000 Press the RESET button on the base unit. Note that this action will  
interrupt all traffic and reset the CELLplex 4000.  
All LEDs on the module should light ON. If not, replace the module (see page 4-10).  
Note: The 155M LEDs will not light. These LEDs are reserved for future use.  
Chapter 4. Troubleshooting 4-1  
 
Port Status LED Does Not Light Green or Is  
Blinking When Idle  
During normal operation, the Port Status LED of an 6412M-25-TP module should light  
GREEN if the port is enabled and a connection present. (The LED will light YELLOW  
during traffic.)  
If the Port Status LED does not light GREEN or is blinking when there is no traffic, refer  
to Table 4-1 on page 4-3 to diagnose and solve the problem.  
4-2 25 Mbps ATM Module - Installation and User's Guide  
 
Table 4-1 (Page 1 of 2). Problem Determination Using Port Status LEDs  
Status LED  
Port Status  
Possible  
Cause  
Corrective Action  
OFF  
Disabled  
Port is  
Enable port.  
disabled.  
Enabled  
6412M-25-TP  
module is not  
powered ON.  
1) Check that the ONcore or  
CELLplex 4000 is connected to  
a power supply.  
2) Check the power supply LED  
by following the instructions in  
“Verifying LED Operation” on  
page 4-1.  
3) Re-insert the 6412M-25-TP  
module in the hub.  
Status LED is  
burned out.  
1) Check the Status LED by  
following the instructions in  
“Verifying LED Operation” on  
page 4-1.  
2) If the Port Status does not  
light, replace the module.  
6412M-25-TP  
module is  
faulty.  
Perform the wrap tests  
described in “Determining the  
Failing Component Using a  
Wrap Test” on page 4-9.  
Chapter 4. Troubleshooting 4-3  
 
Table 4-1 (Page 2 of 2). Problem Determination Using Port Status LEDs  
Status LED  
Port Status  
Possible  
Cause  
Corrective Action  
Blinking  
Enabled  
No connector is  
attached to the  
port, or there is  
no device at  
Attach a connector to the port,  
or ensure that there is a device  
at the end of the connection.  
the end of the  
connection.  
Cable attached  
to the port is  
faulty.  
1) Change the cable.  
2) Perform wrap tests to  
determine the failing  
component.  
3) Check the cable type.  
Remote station  
attached to the  
port is either  
Check the remote station.  
If the station is turned OFF, turn  
ON the station. If the station is  
inoperational, restart the  
turned OFF or  
inoperational.  
application that is running on it.  
Maximum link  
distance  
See Table 2-3 on page 2-12 for  
the maximum distances for valid  
connections.  
exceeded.  
4-4 25 Mbps ATM Module - Installation and User's Guide  
 
Port Status LED Does Not Light Yellow During  
Traffic  
If during continous traffic the Status LED of a port does not light YELLOW, refer to  
Table 4-2 on page 4-6 to diagnose and solve the problem.  
Chapter 4. Troubleshooting 4-5  
 
Table 4-2. Problem Determination Using Port Status LEDs during Traffic  
Status  
LED  
Possible Cause  
Corrective Action  
OFF  
Port is disabled.  
Enter the SHOW PORTcommand at  
the ATM console to see if port is  
enabled.  
6412M-25-TP module is not  
powered ON.  
1) Check the Port Status LED and  
the power supply LEDs by following  
the instructions in “Verifying LED  
Operation” on page 4-1.  
2) Re-insert the 6412M-25-TP  
module in the hub.  
Status LED is burned out.  
1) Check the Status LED by  
following the instructions in  
“Verifying LED Operation” on  
page 4-1.  
2) If necessary, replace the module.  
6412M-25-TP module port is  
faulty.  
Perform the wrap tests described in  
“Determining the Failing Component  
Using a Wrap Test” on page 4-9.  
There is a bad connection on the  
ATM backplane.  
1) Remove the 6412M-25-TP  
module and re-insert it in the same  
slot.  
2) If the problem persists, insert the  
module in another slot.  
UNI port is enabled but not in  
service.  
From the ATM host, make sure that  
the station attached to the port has  
been assigned an ATM address and  
that the address is unique within the  
network.  
4-6 25 Mbps ATM Module - Installation and User's Guide  
 
When the Reset LED Is ON or Starts Blinking  
When the Reset LED of an 6412M-25-TP module is ON or starts blinking, the module  
has entered into an error condition. Table 4-3 describes the possible problems that  
may occur and the corrective action to take for each problem.  
Table 4-3. Problem Determination Using the Module Reset LED  
Reset LED  
Meaning  
Possible  
Cause  
Corrective Action  
ON  
6412M-25-TP  
module error  
condition  
Module is  
faulty.  
Perform the wrap tests  
described in “Determining the  
Failing Component Using a  
Wrap Test” on page 4-9.  
There is a bad  
connection on  
the ATM  
1) Remove the module and  
re-insert it in the same slot.  
2) If the problem persists, insert  
the module in another slot.  
backplane.  
Blinking  
6412M-25-TP  
module error  
condition  
(ONcore only)  
ONcore ATM  
Switch/Control  
module is not  
installed.  
Install an ONcore ATM  
Switch/Control module in slots 9  
to 10 (or 11 to 12 in 17-slot  
model).  
Module is either  
faulty or not  
securely  
1) Remove the module and  
re-insert it.  
2) If the problem persists,  
replace the module.  
plugged into  
the ATM  
backplane.  
There is a bad  
connection on  
the ATM  
1) Remove the module and  
re-insert it in the same slot.  
2) If the problem persists, insert  
the module in another slot.  
backplane.  
Chapter 4. Troubleshooting 4-7  
 
When the Wrong Slot LED Is ON (ONcore only)  
When the Wrong Slot LED of an 6412M-25-TP module is ON, the module is not  
installed in the correct slot. Remove the module from the hub and re-insert it into any  
vacant slot in positions 1 to 8 (or 12 to 17 in 6017C-AC model). (Slots 9 to 10, and 11  
in a 17-slot model are reserved for the ONcore ATM Switch/Control module.) Slot 12 in  
17-slot models cannot be used if an ONcore ATM Switch/Control module is installed in  
slot 11.  
4-8 25 Mbps ATM Module - Installation and User's Guide  
 
Determining the Failing Component Using a Wrap  
Test  
In the troubleshooting procedures in this chapter, you are sometimes instructed to  
perform a wrap test in order to determine the failing component that caused the  
problem.  
To run a wrap test:  
1. Enter the SET PORT slot.port DISABLEcommand, where slotis the slot number of  
the 6412M-25-TP module and portis the number of the port (1 through 12). Then  
press Enter.  
2. Insert a wrap plug in the port.  
3. Enter WRAP slot.port EXTERNALwhere slotis the slot number of the module and  
portis the number of the port. Then press Enter.  
If you receive a return code of KO Test Failed, the port is faulty and the module  
motherboard should be replaced. Contact your 3Com Service Representative.  
If you receive a return code of OK Test Successful, test the line connected to the  
port.  
Chapter 4. Troubleshooting 4-9  
 
Replacing 6412M-25-TP Modules  
The troubleshooting procedures in this chapter sometimes instruct you to replace a  
failing 6412M-25-TP module. To do so, follow these steps:  
1. Enter SET MODULE slot ISOLATEDwhere slotis the slot number of the failed  
module. Then press Enter.  
2. Remove the failed module and insert another 6412M-25-TP module in its slot.  
3. Enter SET MODULE slot CONNECTEDwhere slotis the slot number of the new  
module. Then press Enter.  
The new module is automatically configured with the last settings configured for the slot  
number you entered.  
4-10 25 Mbps ATM Module - Installation and User's Guide  
 
Appendix A. Technical  
Specifications  
General Specifications  
Face Plate Marking  
Number of Ports  
Connectors  
6412M-25-TP  
12  
RJ-45 copper  
Electrical Specifications  
Power Requirement  
25 Watts  
1.2 Watts for +12V  
Power Consumption  
Fuses  
6 Amps for +5V  
0.10 Amps for +12V  
7 Amps for +5V  
1 Amp for +12V  
Environmental Specifications  
Operating Temperature 0°C to 50°C (32°F to 122°F)  
Storage Temperature  
Humidity  
10°C to +60°C (14°F to 140°F)  
0 to 95 % RH  
Appendix A. Technical Specifications A-1  
 
Mechanical Specifications  
Dimensions  
2.5 cm. (1.0 in) Width  
27 cm. (10.7 in) Length  
38.5 cm. (15.25 in) Height  
Weight  
3.3 lbs (1.5 kg)  
A-2 25 Mbps ATM Module - Installation and User's Guide  
 
Appendix B. ATM  
Components  
Table B-1 lists the part numbers of ATM components that can be ordered for use with  
the 6412M-25-TP module.  
Table B-1. Part Numbers of ATM Components  
ATM Component  
3Com Part  
Number  
RJ-45 wrap plug  
42H0540  
Appendix B. ATM Components B-1  
 
B-2 25 Mbps ATM Module - Installation and User's Guide  
 
Appendix C. Technical  
Support  
3Com provides easy access to technical support information through a variety of  
services. This appendix contains the following sections:  
Online Technical Services  
Support From Your Network Supplier  
Support From 3Com Corporation  
Returning Products for Repair  
Accessing the 3Com ISD MIB  
Contacting 3Com ISD Technical Publications  
Online Technical Services  
3Com offers worldwide product support 7 days a week, 24 hours a day, through the  
following online systems:  
3Com Bulletin Board Service (3ComBBS)  
World Wide Web site  
3ComForum on CompuServe  
3ComFactsSM automated fax service  
3Com Bulletin Board Service  
3ComBBS contains patches, software, and drivers for all 3Com products, as well as  
technical articles. This service is available through a modem or ISDN 7 days a week, 24  
hours a day.  
Appendix C. Technical Support C-1  
 
Access by Analog Modem  
To reach the service by modem, set your modem to 8 data bits, no parity, and 1 stop  
bit. Call the telephone number nearest you:  
Country  
Data Rate  
Telephone Number  
Australia  
up to 14400 bps  
Sydney (61) (2) 9937 5000  
Melbourne (61) (3) 9653 9515  
France  
up to 14400 bps  
up to 9600 bps  
(33) (1) 69 86 69 54  
Germany  
(49) (89) 627 32 188 or  
(49) (89) 627 32 189  
Hong Kong  
Italy (fee required)  
Japan  
up to 14400 bps  
up to 14400 bps  
up to 14400 bps  
up to 14400 bps  
up to 14400 bps  
up to 28800 bps  
up to 28800 bps  
(852) 2501 1111  
(39) (2) 273 00680  
(81) (3) 3345 7266  
(65) 534 5693  
Singapore  
Taiwan  
(886) (2) 377 5840  
(44) (1442) 278278  
(1) (408) 980 8204  
U.K.  
U.S.  
Access by Digital Modem  
ISDN users can call in to 3ComBBS using a digital modem for fast access up to 56  
Kbps. To access 3ComBBS using ISDN, call the following number:  
(408) 654-2703  
C-2 25 Mbps ATM Module - Installation and User's Guide  
 
World Wide Web Site  
Access the latest networking information on the 3Com World Wide Web site by entering  
our URL into your Internet browser:  
This service features news and information about 3Com products, customer service and  
support, 3Com Corporation's latest news releases, selected articles from 3TECH  
(3Com Corporation's award-winning technical journal), and more.  
3ComForum on CompuServe  
3ComForum is a CompuServe-based service containing patches, software, drivers, and  
technical articles about all 3Com products, as well as a messaging section for peer  
support. To use 3ComForum, you need a CompuServe account.  
To use 3ComForum:  
1. Log in to CompuServe.  
2. Enter go threecom.  
3. Press Return to view the 3ComForum main menu.  
3ComFacts Automated Fax Service  
3Com Corporation's interactive fax service, 3ComFacts, provides data sheets, technical  
articles, diagrams, and troubleshooting instructions on 3Com products 7 days a week,  
24 hours a day.  
Call 3ComFacts using your touch-tone telephone. International access numbers are:  
Country  
Hong Kong  
U.K.  
Telephone Number  
(852) 2537 5610  
(44) (1442) 278279  
(1) (408) 727 7021  
U.S.  
Appendix C. Technical Support C-3  
 
Local access numbers are available within the following countries:  
Country  
Australia  
Belgium  
Denmark  
Finland  
Telephone Number  
800 123853  
0800 71279  
800 17319  
98 001 4444  
05 90 81 58  
0130 8180 63  
1678 99085  
06 0228049  
800 11062  
France  
Germany  
Italy  
Netherlands  
Norway  
Portugal  
Russia (Moscow only)  
Spain  
0505 442607  
956 0815  
900 964445  
020 792954  
0800 626403  
Sweden  
U.K.  
C-4 25 Mbps ATM Module - Installation and User's Guide  
 
Support From Your Network Supplier  
If additional assistance is required, contact your network supplier. Many suppliers are  
authorized 3Com service partners who are qualified to provide a variety of services,  
including network planning, installation, hardware maintenance, application training, and  
support services.  
When you contact your network supplier for assistance, have the following information  
ready:  
Diagnostic error messages  
A list of system hardware and software, including revision levels  
Details about recent configuration changes, if applicable.  
If you are unable to contact your network supplier, refer to the following section on  
contacting 3Com.  
Support From 3Com Corporation  
If you are unable to receive support from your network supplier, technical support  
contracts are available from 3Com.  
In the U.S. and Canada, call (800) 876-3266 for customer service.  
If you are outside the U.S. and Canada, contact your local 3Com sales office to find  
your authorized service provider:  
Country  
Telephone Number  
Australia  
(61) (2) 9937 5000 (Sydney)  
(61) (3) 9653 9515 (Melbourne)  
Belgium*  
Brazil  
0800 71429  
(55) (11) 546 0869  
Appendix C. Technical Support C-5  
 
Country  
Canada  
Telephone Number  
(416) 498 3266  
800 17309  
Denmark*  
Finland*  
France*  
0800 113153  
05 917959  
Germany*  
Hong Kong  
Ireland*  
0130 821502  
(852) 2501 1111  
1 800 553117  
1678 79489  
Italy*  
Japan  
(81) (3) 3345 7251  
(525) 531 0591  
06 0227788  
Mexico  
Netherlands*  
Norway*  
Singapore  
South Africa  
Spain*  
800 13376  
(65) 538 9368  
(27) (11) 803 7404  
900 983125  
Sweden*  
Taiwan  
120 795482  
(886) (2) 577 4352  
(971) (4) 349049  
0800 966197  
United Arab Emirates  
U.K.*  
U.S.  
(1) (408) 492 1790  
* These numbers are toll-free.  
C-6 25 Mbps ATM Module - Installation and User's Guide  
 
Returning Products for Repair  
A product sent directly to 3Com for repair must first be assigned a Return Materials  
Authorization (RMA) number. A product sent to 3Com without an RMA number will be  
returned to the sender unopened, at the sender's expense.  
To obtain an RMA number, call or fax:  
Country  
Telephone Number  
(800) 876 3266, option 2  
31 30 60 29900, option 5  
(1) (408) 492 1790  
Fax Number  
U.S. and Canada  
Europe  
(408) 764 7120  
(44) (1442) 275822  
(1) (408) 764 7290  
Outside Europe, U.S., and  
Canada  
Appendix C. Technical Support C-7  
 
Accessing the 3Com ISD MIB  
The 3Com Management Information Base (MIB) for the Integrated Systems Division  
(ISD) describes commands that enable you to manage 3Com SNMP-based products.  
The MIB is available over the Internet on an anonymous FTP server. Updates to these  
MIBs are released as new 3Com products are introduced.  
To access Internet versions:  
1. FTP to ftp.3com.com(192.156.136.12).  
2. Enter the login name anonymous.  
3. Enter your full Internet e-mail address as the password (for example,  
4. Change to the mib or schema directory using the cd /pub/mibsor  
cd /pub/mibs/all-mibscommand.  
5. To view the 3Com MIB, OID, or schema entries, enter the lscommand.  
To pause the display, press [Ctrl+S].  
To continue the display, press [Ctrl+Q].  
6. Copy the MIB, OID, or schema files to your current directory using the appropriate  
command (for example, get atswitch.mib).  
7. To exit the FTP session, invoke the quitcommand.  
Contacting 3Com ISD Technical Publications  
If you have comments or questions on 3Com Integrated Systems Division Technical  
Publications documents, contact the Technical Publications group by fax at (508)  
229-1551.  
C-8 25 Mbps ATM Module - Installation and User's Guide  
 
Index  
campus networking 1-4  
campus networks 1-4  
CELLplex 4000  
A
activity LEDs 1-4, 3-7, 3-9  
adapters B-1  
cabling instructions 2-10  
pin-out information 2-15  
commands  
ATM  
attaching ATM devices 2-10  
campus networking 1-4  
cell switching 1-1  
SET MODULE 3-6, 4-10  
SET PORT 3-6, 4-9  
SHOW PORT 4-5  
components B-1  
interfaces 1-3, 3-1  
WRAP 4-9  
multiplexed traffic 1-3  
ATM data transmission 1-1  
ATM Forum specifications 1-3  
ATM interfaces 1-3, 3-1  
ATM ports  
configuration 3-1  
connecting devices to the ATM ports 2-13  
connecting to end-node devices 2-14  
connecting to network 3-6  
connections 1-3, 1-4  
to ONcore 12-Port 25 Mbps ATM I/O  
Module ports 1-3  
building wiring 2-13  
cabling 2-13, 2-14  
connecting devices to 2-13  
attaching ATM devices 2-10  
attaching devices to ONcore 12-Port 25  
Mbps ATM I/O Module ports 2-10  
connectors  
on front panel 3-8  
pin numbers 2-15  
pin signal names 2-15  
B
D
blinking LEDs 4-7  
devices, connecting 1-3  
port 1-3  
dimensions A-2  
C
direct cabling 2-14  
cables  
disabling ONcore 12-Port 25 Mbps ATM I/O  
Module ports 4-9  
labeling 2-14  
cabling  
displaying configuration 3-3  
displaying ONcore 12-Port 25 Mbps ATM  
I/O Module configuration 3-3  
ATM connections 2-13, 2-14  
CELLplex 4000 2-10  
instructions 2-10  
labeling cables 2-13, 2-14  
types 2-14  
Index X-1  
 
module reset button 3-8  
E
multiplexed ATM traffic 1-3  
electrical specifications A-1  
electronic emission notices ii  
enabling ONcore 12-Port 25 Mbps ATM I/O  
Module ports 3-6, 4-9  
N
notices, electronic emission ii  
enabling ports 3-6  
environmental specifications A-1  
O
operating temperature A-1  
F
Fault-Tolerant Controller module 4-1, 4-2  
FCC statement ii  
feature codes A-1  
front panel 3-9  
P
part numbers for ATM components B-1  
physical interface 1-3  
pin-outs for twisted-pair cable 2-16  
power requirements A-1  
problem determination  
See troubleshooting  
front panel LEDs 3-7  
fuses A-1  
I
installation 2-4  
R
interfaces used on ONcore 12-Port 25 Mbps  
ATM I/O Module ports 1-3, 3-1, 3-3  
isolated mode 3-6  
reconnecting module 4-10  
replacing module 4-10  
replacing ONcore 12-Port 25 Mbps ATM I/O  
modules 4-10  
isolating module 4-10  
isolating ONcore 12-Port 25 Mbps ATM I/O  
modules 4-10  
reset LED 1-4, 2-6, 2-9, 3-7, 3-9, 4-7  
resetting 3-8  
resetting ONcore 12-Port 25 Mbps ATM I/O  
modules 3-8  
L
LEDs  
RJ-45 connector  
normal operation 4-1  
on front panel 3-7, 3-9  
troubleshooting 4-1  
logical links, configuring 3-1  
connector pin numbers 2-15  
connector pin signal names 2-15  
S
saving configuration 3-5  
saving ONcore 12-Port 25 Mbps ATM I/O  
Module configuration 3-5  
M
Index X-2  
 
SET MODULE command 3-6, 4-10  
SET PORT command 3-1, 3-6, 4-9  
SHOW MODULE command 3-3  
SHOW PORT command 3-5, 4-5  
slot positions 1-2  
W
WRAP commands 4-9  
wrap plugs B-1  
wrap tests 4-9  
wrong slot LED 1-4, 3-9, 4-8  
slot positions in expansion unit 2-7  
slot positions in hub 2-4  
specifications  
dimensions A-2  
electrical A-1  
feature codes A-1  
temperature A-1  
weight A-2  
status LEDs 1-4, 3-6, 3-7, 3-9, 4-2, 4-5  
T
temperature, operating and storage A-1  
troubleshooting 4-1  
replacing modules 4-10  
using reset LED 4-7  
using status LEDs 4-2, 4-5  
using wrong slot LED 4-8  
wrap test 4-9  
twisted-pair cable  
pin-outs 2-16  
U
unpacking 2-2  
user-to-network interface (UNI) 1-3, 3-1  
V
verifying ONcore 12-Port 25 Mbps ATM I/O  
Module operation 3-7  
verifying operation 3-7  
Index X-3  
 
Index X-4  
 
Limited Warranty  
HARDWARE: 3Com warrants its hardware products to be free from defects in workmanship and materials, under normal use  
and service, for the following lengths of time from the date of purchase from 3Com or its Authorized Reseller:  
Internetworking products  
1 year  
Network adapters  
Lifetime  
*
Ethernet stackable hubs and Unmanaged Ethernet fixed port repeaters  
Lifetime (1 year if not registered).  
*
Power supply and fans in these stackable hubs and unmanaged repeaters  
1 year  
1 year  
90 days  
Other hardware products  
Spare parts and spares kits  
If a product does not operate as warranted above during the applicable warranty period, 3Com shall, at its option and  
expense, repair the defective product or part, deliver to Customer an equivalent product or part to replace the defective item,  
or refund to Customer the purchase price paid for the defective product. All products that are replaced will become the  
property of 3Com. Replacement products may be new or reconditioned. Any replaced or repaired product or part has a ninety  
(90) day warranty or the remainder of the initial warranty period, whichever is longer.  
3Com shall not be responsible for any software, firmware, information, or memory data of Customer contained in, stored on,  
or integrated with any products returned to 3Com for repair, whether under warranty or not.  
SOFTWARE: 3Com warrants that the software programs licensed from it will perform in substantial conformance to the  
program specifications thereof for a period of ninety (90) days from the date of purchase from 3Com or its Authorized  
Reseller. 3Com warrants the media containing software against failure during the warranty period. No updates are provided.  
3Com's sole obligation with respect to this express warranty shall be (at 3Com's discretion) to refund the purchase price paid  
by Customer for any defective software products, or to replace any defective media with software which substantially  
conforms to 3Com's applicable published specifications. Customer assumes responsibility for the selection of the appropriate  
applications program and associated reference materials. 3Com makes no warranty or representation that its software  
products will work in combination with any hardware or applications software products provided by third parties, that the  
operation of the software products will be uninterrupted or error-free, or that all defects in the software products will be  
corrected. For any third-party products listed in the 3Com software product documentation or specifications as being  
compatible, 3Com will make reasonable efforts to provide compatibility, except where the non-compatibility is caused by a  
"bug" or defect in the third party's product.  
STANDARD WARRANTY SERVICE: Standard warranty service for hardware products may be obtained by delivering the  
defective product, accompanied by a copy of the dated proof of purchase, to 3Com's Corporate Service Center or to an  
Authorized 3Com Service Center during the applicable warranty period. Standard warranty service for software products may  
be obtained by telephoning 3Com's Corporate Service Center or an Authorized 3Com Service Center, within the warranty  
period. Products returned to 3Com's Corporate Service Center must be pre-authorized by 3Com with a Return Material  
Authorization (RMA) number marked on the outside of the package, and sent prepaid, insured, and packaged appropriately  
for safe shipment. The repaired or replaced item will be shipped to Customer, at 3Com's expense, not later than thirty (30)  
days after receipt of the defective product by 3Com.  
Limited Warranty X-5  
 
WARRANTIES EXCLUSIVE: If a 3Com product does not operate as warranted above, Customer's sole remedy FOR  
BREACH OF THAT WARRANTY shall be repair, replacement, or refund of the purchase price paid, at 3Com's option. TO  
THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE  
IN LIEU OF ALL OTHER WARRANTIES, terms, or conditions, EXPRESS OR IMPLIED, EITHER IN FACT OR BY  
OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING WARRANTIES, terms, or conditions OF  
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and satisfactory quality. 3COM NEITHER ASSUMES NOR  
AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE,  
INSTALLATION, MAINTENANCE, OR USE OF ITS PRODUCTS.  
3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE  
ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOMER'S OR ANY THIRD  
PERSON'S MISUSE, NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR OR  
MODIFY, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE,  
LIGHTNING, OR OTHER HAZARD.  
LIMITATION OF LIABILITY: TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS  
SUPPLIERS ANY LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR  
INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF  
REVENUE OR PROFITS, LOSS OF BUSINESS, LOSS OF INFORMATION OR DATA, OR OTHER FINANCIAL LOSS  
ARISING OUT OF OR IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE,  
FAILURE, OR INTERRUPTION OF ITS PRODUCTS, EVEN IF 3COM OR ITS AUTHORIZED RESELLER HAS BEEN  
ADVISED OF THE POSSIIBILITY OF SUCH DAMAGES, AND LIMITS ITS LIABILITY TO REPAIR, REPLACEMENT, OR  
REFUND OF THE PURCHASE PRICE PAID, AT 3COM'S OPTION. THIS DISCLAIMER OF LIABILITY FOR DAMAGES  
WILL NOT BE AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE.  
Some countries, states, or provinces do not allow the exclusion or limitation of implied warranties or the limitation of incidental  
or consequential damages for certain products supplied to consumers, so the above limitations and exclusions may be limited  
in their application to you. This warranty gives you specific legal rights which may vary depending on local law.  
GOVERNING LAW: This Limited Warranty shall be governed by the laws of the state of California.  
3Com Corporation  
5400 Bayfront Plaza  
Santa Clara, CA 95052-8145  
(408) 764-5000  
3/18/96  
Limited Warranty X-6  
 

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