3Com 6416SW User manual

ONcore ATM Switch/Control Module
Installation and User's Guide
Document Number: 17-00616-3
Printed March 1996
Model Number: 6416SW
3Com Corporation
118 Turnpike Road
Southborough, MA 01772-1886
U.S.A.
[phone]
FAX: [phone]

Federal Communication Commission Notice
This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own
expense.
Canadian Emission Requirements
Cet appareil numérique respecte les limites de bruits radioélectriques
applicables aux appareils numériques de class A prescrites dans la norme
sur le materiel brouilleur: "Appareils Numériques", NMB-003 édictée par le
ministre des Communications.
This digital apparatus does not exceed the Class A limits for radio noise
emissions from digital apparatus set out in the Interference-causing
equipment standard entitled "Digital Apparatus", ICES-003 of the
Department of Communications.
VDE Class B Compliance
Hiermit wird bescheinigt, class der (6416SW) in Uebereinstimmung mit den
Bestimmungen der Vfg 243/1991 funkentstoert ist.
Der Deutschen Bundespost wurde das Inverkehrbringen dieses Geraetes
angezeigt und die berechtigung zur Ueberpruefung der Serie auf
Einhaltung der bestimmungen eingeraeumt.
Einhaltung mit betreffenden Bestimmugen kommt darauf an, dass
geschirmte Ausfuehrungen gebraucht werden. Fuer die Beschaffung
richtiger Ausfuehrungen ist der Betreiber verantwortlich.
ii ONcore ATM Switch/Control Module: Installation and User's Guide

This is to certify that the (6416SW) is shielded against radio interference in
accordance with the provisions of Vfg 243/1991.
The German Postal Services have been advised that this equipment is
being placed on the market and that they have been given the right to
inspect the series for compliance with regulations.
Compliance with applicable regulations depends on the use of shielded
cables. The user is reponsible for procuring the appropriate cables.
VCCI Class 1 Compliance
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 Data Processing
Equipment and Electronic Office Machines 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 radio and TV receivers, etc.
Read the instructions for correct handling.
iii

Fiber Cable Classification
Use this equipment only with fiber cable classified by Underwriters
Laboratories as to fire and smoke characteristics in accordance with
section 770-2(b) and Section 725-2(b) of the National Electrical Code.
UK General Approval Statement
The ONline System Concentrator and the ONcore Switching Hub are
manufactured to the International Safety Standard EN 60950 and as such
are approved in the UK under the General Approval number
NS/G/12345/J/100003 for indirect connection to the public
telecommunication network.
Disclaimer
The information in this document is subject to change without notice and
should not be construed as a commitment by 3Com Corporation. 3Com
Corporation assumes no responsibility for any errors that may appear in
this document.
Copyright Statement
1995, 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.
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.
ONdemand and TriChannel are trademarks, and 3Com, CELLplex, and
ONcore registered trademarks, of 3Com Corporation.
iv ONcore ATM Switch/Control Module: Installation and User's Guide

The following terms are trademarks or service marks of the IBM
Corporation in the United States or other countries: AIX, AIXwindows, IBM,
NetView for AIX, Nways and RISC System 6000.
XNS is a trademark and Ethernet is a registered trademark of Xerox
Corporation.
v

vi ONcore ATM Switch/Control Module: Installation and User's Guide

Contents
Chapter 1. Introduction to ATM ..................... 1-1
3Com ONcore ATM Subsystem ...................... 1-2
ATM Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
ATM Switch/Control Module ....................... 1-6
ATM Subsystem Traffic Management ................ 1-11
ATM Subsystem Chassis Management ............... 1-12
Benefits of Using ATM in the ONcore Hub ............. 1-14
LAN Emulation Client (LEC) ....................... 1-15
Chapter 2. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Before You Start ............................... 2-1
Unpacking the Module ............................ 2-2
Installing the 6416SW Module ....................... 2-3
Verifying Normal 6416SW Operation ................... 2-7
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Meaning of the LEDs .......................... 2-10
ATM Reset Button ............................ 2-12
RS-232 Console Port .......................... 2-13
RS-232 Auxiliary Port .......................... 2-14
Chapter 3. ATM Addressing . . . . . . . . . . . . . . . . . . . . . . . 3-1
ATM Campus Networks ........................... 3-1
Network Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Network Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Defining the ATM Address of the 6416SW ................ 3-7
Setting-Up ATM Trunk Connections .................... 3-8
Using Static Routes ............................ 3-9
Trunks Within a Single Cluster/Subnetwork .............. 3-9
Trunks Between Subnetworks ..................... 3-10
Example: Configuring a Connection Between User Devices ... 3-11
Using Permanent Virtual Connections .................. 3-13
Chapter 4. Setting-Up and Using a Configuration Console .... 4-1
Contents vii

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Before You Start ............................... 4-3
Entering 6416SW Commands ...................... 4-3
Keyboard Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Command Completion . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Setting Up a Configuration Console in Normal (ASCII) Mode ..... 4-7
Setting Up a Configuration Console in SLIP Mode ........... 4-8
Returning to Normal Mode ........................ 4-9
SLIP Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
TELNET Sessions Via a Remote Switch ................ 4-12
Minimum Local Configuration ..................... 4-12
Logon Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Reconfiguring 6416SW Configuration Console Settings ........ 4-15
Saving Reconfigured Configuration Console Settings ....... 4-15
Automatic Modem Hangup ....................... 4-16
Chapter 5. Configuring the ATM Switch/Control Module ...... 5-1
Configuration Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Setting 6416SW Passwords ......................... 5-6
Administrator Password . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
User Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Setting the Internal Clock .......................... 5-9
Setting Local 6416SW Parameters .................... 5-10
Switch Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Service Contact Information ...................... 5-11
Console Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Console Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Setting the ATM Address of the 6416SW ................ 5-13
Connecting ATM media Modules ..................... 5-14
Enabling ATM Ports and Interfaces ................... 5-15
Disabling an ATM Port ......................... 5-15
Setting Up Trunks (Logical Links) .................... 5-16
Static Routes for Other Subnetworks ................. 5-16
Setting SNMP Parameters ........................ 5-17
IP Address and Subnetwork Mask (IP only) ............. 5-18
LAN Emulation Client (LE only) .................... 5-19
viii ONcore ATM Switch/Control Module: Installation and User's Guide

Default Gateway (IP & LE) ....................... 5-21
ARP Server (IP only) .......................... 5-21
Community Table (IP & LE) ...................... 5-22
Alerts (IP & LE) ............................. 5-22
Setting the LECS ATM Address ..................... 5-23
Saving Configuration Settings and Logging Off ............ 5-25
Working With Configuration Settings ................... 5-28
Reverting Configuration Changes ................... 5-28
Displaying Configuration Settings ................... 5-29
Modifying Configuration Settings ................... 5-32
Isolating and Reconnecting ATM Media Modules ........... 5-33
Fault Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
Chapter 6. Network and Switch Management ............ 6-1
Managing the ATM Subsystem ....................... 6-1
SNMP Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Accessing MIB Files ........................... 6-3
Security Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Uploading and Downloading Operations ................. 6-5
Inband Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Out-of-band Operations . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Chapter 7. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 7-1
Phase 1: Installation and Power Problems ................ 7-2
Prerequisites for ATM Troubleshooting ................. 7-3
Diagnosing Problems from the ATM Media LEDs .......... 7-4
Diagnosing Problems from the 6416SW LEDs ............ 7-6
Diagnosing Problems with the Power Supply ............. 7-9
Phase 2: Problems During ATM Configuration ............ 7-10
Diagnosing Problems Concerning the 6416SW Console ...... 7-11
Diagnosing Problems with ATM Modules .............. 7-14
Diagnosing Problems with ATM Ports ................ 7-15
Phase 3: Problems on ATM Media Ports Without ATM Traffic ... 7-19
Diagnosing Problems with ATM Ports Attached to ATM Devices . 7-20
Checking ATM Address Registration ................. 7-22
Diagnosing Problems in the Hardware Configuration ........ 7-23
Phase 4: Problems with Normal ATM Operation ........... 7-24
Contents ix

ONcore Cannot PING the ARP Servers and Vice-versa ...... 7-25
ONcore Hub Cannot PING an ARP Client .............. 7-27
ONcore LEC Cannot PING another Client and Vice-versa .... 7-28
ARP Client Cannot PING the ARP Server .............. 7-29
Two Devices Using IP Over a PVC Cannot Ping Each Other ... 7-30
ONcore LEC Cannot Initialize to the LES/BUS ........... 7-31
Administrative Problems (Netview/SNMP/Telnet) .......... 7-34
Communication Problems in an IBM LAN Emulation Environment 7-39
Other Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-44
ATM Connection Problems ....................... 7-47
Using 6416SW Trap Messages ...................... 7-50
Contacting Your 3Com Service Representative ............ 7-51
Troubleshooting Phase 1 and Phase 2 Problems .......... 7-51
Troubleshooting Phase 3 Problems .................. 7-52
Troubleshooting Phase 4 Problems .................. 7-53
Appendix A. Technical Specifications . . . . . . . . . . . . . . . . . A-1
General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . A-2
Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Appendix B. RS-232 Cable and Modem Requirements ....... B-1
Attaching a Console, Modem, or Server .................. B-1
RS-232 Cable Requirements ........................ B-2
RS-232 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
9-Pin/9-Pin Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
9-Pin/25-Pin Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Null-Modem Interposer . . . . . . . . . . . . . . . . . . . . . . . . . . B-5
Modem Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6
Modem Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7
Modem Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7
Appendix C. Error and Information Codes .............. C-1
Q.2931 Error Codes for Clear Causes ................... C-2
Maintenance Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5
IBM LAN Emulation Server Error Codes ................. C-6
x ONcore ATM Switch/Control Module: Installation and User's Guide

Appendix D. Configuring AIX for Download and Upload
Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
Appendix E. ONcore ATM Address Formats ............. E-1
Network Prefix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-3
End System Part ............................. E-5
Appendix F. Technical Support . . . . . . . . . . . . . . . . . . . . . F-1
Online Technical Support .......................... F-2
E-mail Technical Support ......................... F-2
World Wide Web Site ........................... F-2
Support from Your Network Supplier .................... F-3
Support from 3Com ............................. F-4
Returning Products for Repair ....................... F-5
Accessing the 3Com MIB and atswitch.mib ................ F-6
3Com Technical Publications ........................ F-6
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-1
Contents xi

xii ONcore ATM Switch/Control Module: Installation and User's Guide

Figures
1-1. ATM Backplane in the 17-slot 3Com ONcore Hub ...... 1-3
1-2. Wiring Star Topology in ATM Backplane (17-slot model) ... 1-4
2-1. Installing the 6416SW Module in an ONcore Hub ....... 2-3
2-2. ONcore Module Ejectors ..................... 2-4
2-3. Attaching a Terminal to the 6416SW RS-232 Console Port . 2-6
2-4. Front Panel of 6416SW Module ................. 2-9
3-1. Components of an ATM Campus Network ........... 3-2
3-2. ATM Address Hierarchy ...................... 3-3
3-3. ATM Logical Links Used to Connect ATM Clusters ...... 3-8
3-4. Using Static Route Mappings to Connect User Devices
Across Subnetworks . . . . . . . . . . . . . . . . . . . . . . . 3-12
4-1. Working in Remote 6416SW Sessions ............ 4-14
6-1. Upgrade Operations for ATM Microcode ............ 6-5
B-1. RS-232 Connector . . . . . . . . . . . . . . . . . . . . . . . . . B-2
B-2. Console Attachment: 9-pin to 9-pin RS-232 Cable ...... B-3
B-3. Console Attachment: 9-pin to 25-pin RS-232 Cable ...... B-4
B-4. Pin Assignment: RS-232 Interposer ............... B-5
B-5. Pin Assignment: RS-232 Modem Cable ............ B-6
B-6. Example: IBM 7855-10 Modem Configuration ......... B-8
E-1. NSAP Address Formats Supported in the ONcore ATM
Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2
Figures xiii

xiv ONcore ATM Switch/Control Module: Installation and User's Guide

Tables
1-1. ATM Connections Supported in ONcore Hubs ......... 1-7
1-2. Maximum PING and TELNET Message Lengths ...... 1-15
2-1. Meaning of the 6416SW LEDs ................. 2-10
2-2. RS-232 Console Port Pin Assignments (DB9) ........ 2-13
2-3. RS-232 Auxiliary Port Pin Assignments ............ 2-14
5-1. 6416SW Configuration Commands ............... 5-4
7-1. 6416SW Trap Messages .................... 7-50
B-1. EIA 232 Connector-Pin Signal Assignments .......... B-2
C-1. Q.2931 Error Codes for Clear Causes in ONcore-based ATM
Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
C-2. Maintenance Codes and Meanings ............... C-5
C-3. IBM LAN Emulation Server Error Codes ............ C-6
Tables xv

xvi ONcore ATM Switch/Control 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 Switch/Control Module (Model Number 6414SW) in the
3Com ONcore Switching Hub. It describes how to diagnose and solve
problems associated with the operation of the 6416SW module, and
describes some of the principles of asynchronous transfer mode (ATM)
technology on which the 6416SW module is based.
This guide also describes how to install and configure a management
console for the 6416SW module. The ATM commands that you enter at
the console to manage the ATM subsystem in the ONcore hub are
described in the ONcore Switching Hub , CELLplex 4000 Workgroup Switch ,
ATM Command Reference Guide , Document Number: 17-00866.
Who Should Use this Guide
This guide is intended for the following people at your site:
ATM network administrator
ATM network operator
Hardware installer.
How to Use this Guide
This guide contains seven chapters and six appendixes:
Chapter 1, “Introduction to ATM” gives an overview of the main
functions of the 6416SW module.
Chapter 2, “Installation” describes how to install the 6416SW module in
the ONcore hub. It also describes how to connect a console to the
6416SW module in order to perform configuration tasks.
How to Use This Guide xvii

Chapter 3, “ATM Addressing” describes the components of an ATM
Campus network, guidelines for defining ATM addresses for the 6416SW,
how to set up trunk connections within and between networks, and how to
use Permanent Virtual Connections (PVCs). It also describes how to
connect a console to the 6416SW module in order to perform configuration
tasks.
Chapter 4, “Setting-Up and Using a Configuration Console” describes
how to set up and configure the 6416SW management console, set an
ATM address, and configure facilities for SNMP management and remote
login.
Chapter 5, “Configuring the ATM Switch/Control Module” describes
how to configure the 6416SW module after installing it in the ONcore hub.
Chapter 6, “Network and Switch Management” provides guidelines for
managing and maintaining the ATM Switch/Control.
Chapter 7, “Troubleshooting” describes how to diagnose and solve
problems associated with the installation and operation of the 6416SW
module, 6416SW console, and ATM subsystem in the ONcore hub.
Appendix A, “Technical Specifications” describes the technical
specifications for the 6416SW module.
Appendix B, “RS-232 Cable and Modem Requirements” describes the
RS-232 cable requirements and pin assignments for connecting a console
or modem to the 6416SW module's RS-232 Console port. It also describes
how to configure a modem connection.
Appendix C, “Error and Information Codes” describes the return codes
displayed for the Q.2931 protocol and Maintenance mode.
Appendix D, “Configuring AIX for Download and Upload Operations”
describes how to configure a server running AIX* for TFTP file transfers
with ATM ONcore hubs.
xviii ONcore ATM Switch/Control Module: Installation and User's Guide

Appendix E, “ONcore ATM Address Formats” describes the ATM
addressing formats.
Appendix F, “Technical Support” describes the support services
provided by 3Com Corporation.
How to Use This Guide xix

Prerequisite Knowledge
To understand the information presented in this guide you should be
familiar with:
Features and characteristics of the 3Com ONcore Switching hub, as
described in 3Com ONcore Switching Hub Installation and Operation
Guide , 17-00362.
Principles of asynchronous transfer mode (ATM) technology
ATM Forum UNI Specifications V3.0 and V3.1.
ATM Forum LAN Emulation Specifications V1.0.
xx ONcore ATM Switch/Control Module: Installation and User's Guide