IBM 8265 Nways ATM Switch User manual

8265 Nways ATM Switch IBM
User's Guide
SA33-0456-01

8265 Nways ATM Switch IBM
User's Guide
SA33-0456-01

Note!
Before using this information and the product it supports, be sure to read the general information under “Notices” on page xi.
Second Edition (January 1998)
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Contents
Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Product Page/Warranties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Industry Standards Reflected in This Product ................................. xi
Trademarks and Service Marks ......................................... xi
About this Book .................................................. xiii
Who Should Use this Book ............................................ xiii
Prerequisite Knowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Where to Find More Information ......................................... xiii
Terms Used in This Book ............................................. xiii
Part 1. Configuring Your ATM Network .............................. 1
Chapter 1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ATM Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Network Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Network Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
The PNNI Network ................................................. 5
Peer Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Summary Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
PNNI Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Virtual Path Connections ............................................ 7
Permanent Virtual Connections ........................................ 8
Chapter 2. Setting-Up and Using a Configuration Console ....................... 9
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Before You Start .................................................. 9
Entering Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Keyboard Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Example Screens Shown in This Book .................................... 10
Command Completion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Setting Up a Configuration Console in Normal (ASCII) Mode ........................ 12
Setting Up a Configuration Console in SLIP Mode .............................. 13
Returning to Normal Mode ........................................... 14
SLIP Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Using TCP/IP for AIX version 3.2.5 .................................... 14
Using TCP/IP V2.1.2 for IBM DOS V7 (no TFTP support) ....................... 14
Using TCP/IP V2.0 for OS/2 V3 (WARP) ................................. 15
Using ChameleonNFS V4.0 or V4.1 for Windows ............................ 15
Configuring the CPSW Ethernet Port ...................................... 16
Setting the IP Address and Subnet Mask .................................. 16
Administrator Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Maintenance Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Setting the Ethernet MAC Address ...................................... 17
Administrator Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Maintenance Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
 Copyright IBM Corp. 1994, 1998 iii

TELNET Sessions Via a Remote Switch or Workstation ........................... 18
Minimum Local Configuration ......................................... 18
Logon Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Accessing the 8265 via the Internet ....................................... 20
Recommended Web Browser Configuration ................................. 20
Accessing the 8265 ............................................... 20
Reconfiguring 8265 Configuration Console Settings .............................. 21
Saving Reconfigured Configuration Console Settings ........................... 21
Automatic Modem Hangup ........................................... 21
Chapter 3. Configuring Basic Parameters .................................. 23
Configuring the ATM Switch Address ...................................... 23
Configuring CPSW Module Parameters ..................................... 24
Configuration Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Setting CPSW Passwords ........................................... 25
Administrator Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
User Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Setting the Node Clock ............................................. 27
Setting Local CPSW Parameters ....................................... 28
Switch Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Service Contact Information ........................................ 28
Console Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Console Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Configuring the ATM Switch Address ..................................... 30
Using Alert Messages ............................................. 31
Types of Alerts ................................................. 31
Configuring Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Q.2931 Branches and Parties .......................................... 33
Using Maintenance Mode ............................................. 34
Leaving Maintenance Mode .......................................... 35
Chapter 4. Configuring SNMP and LANE Parameters .......................... 37
IP Address and Subnetwork Mask (IP only) .................................. 38
Using Host Names ............................................... 38
LAN Emulation Client (LE only) .......................................... 39
Default Gateway (IP & LE) ............................................ 40
ARP Server (IP only) ................................................ 41
Community Table (IP & LE) ............................................ 42
Alerts (IP & LE) ................................................... 43
Setting Up a LAN Emulation Client ....................................... 44
LECS ATM Address ................................................ 45
ILMI MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
LECS Well Known Address .......................................... 45
Fixed PVC (0.17) ................................................ 45
Checking the Configuration .......................................... 46
Chapter 5. Configuring Ports and Media Modules ............................. 47
Enabling ATM Ports and Interfaces ....................................... 47
Enabling PNNI Ports on 8260 Modules ................................... 47
Setting Up Virtual Path Channels (VPCs) .................................... 48
Traffic Shaping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Configuring Reachable Addresses ...................................... 49
Setting Up Permanent Virtual Connections (PVCs) .............................. 50
iv IBM 8265: User's Guide

Connecting Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Connecting Switches Directly ......................................... 51
Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Connecting Switches via VPCs Over VOID or Public UNI Interfaces .................. 52
Connecting Switches via a WAN ....................................... 52
Allowing Duplicate ATM Addresses ....................................... 53
Enabling Port Mirroring .............................................. 54
Chapter 6. Configuring PNNI Parameters .................................. 55
Configuration Control Mechanism ........................................ 55
Critical Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Non-Critical Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Working with PNNI Configuration Settings ................................... 58
Default Parameter Settings .......................................... 58
Changing Parameter Values .......................................... 58
Applying Configuration Changes ....................................... 58
Saving the Active Configuration ........................................ 59
Restoring the Active Configuration ...................................... 59
Restoring the Future Configuration ...................................... 59
Viewing Configuration Settings ........................................ 60
Configuring the ATM Switch Address ...................................... 61
Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Configuring Peer Group Identifiers ........................................ 62
Using the Switch's ATM Address ....................................... 62
Explicitly Entering a Peer Group ID ...................................... 63
Configuring Summary Addresses ........................................ 64
Configuring PNNI Path Selection ......................................... 66
Constant Bit Rate and Variable Bit Rate (CBR, rt VBR, and nrt VBR) .................. 66
Available Bit Rate ................................................ 66
Unspecified Bit Rate .............................................. 67
Using the Crankback Function .......................................... 68
Displaying PNNI Information ........................................... 69
Displaying Node_0 Information ........................................ 69
Path Selection Settings ............................................. 70
Summary Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Configuration State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Peer Group Members .............................................. 71
Neighbor Node Ids ............................................... 71
PTSEs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Chapter 7. Configuring Network Access Security ............................. 75
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Autolearn Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Default Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Violation Trapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Violation Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Enabling or Disabling Security .......................................... 77
Enabling Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Disabling Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Setting the Autolearn Values ........................................... 79
Enabling and Disabling Violation Traps ..................................... 80
Enabling and Disabling Violation Logging .................................... 80
Setting Default Values ............................................... 81
Contents v

Security Mode Default ............................................. 81
Violation Trapping Default ........................................... 81
Autolearn Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Violation Logging Default ............................................ 82
Specifying ATM Addresses to be Accepted ................................... 83
Removing ATM Addresses ........................................... 83
Displaying Security Information .......................................... 84
Current Global Settings ............................................. 84
Current Default Settings ............................................ 84
ATM Addresses Defined ............................................ 85
Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Security Violations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Displaying the Violation Log ........................................ 86
Displaying the Last Violation ........................................ 86
Clearing the Violation Log .......................................... 86
Saving Security Settings .............................................. 87
Reverting Security Changes ........................................... 87
Uploading and Downloading the Access Control Address Table ....................... 88
Uploading the Access Control Address Table ................................ 88
Downloading the Access Control Address Table .............................. 88
Updating the Access Control Address Table ................................ 88
Uploading the Violation Log ............................................ 90
Part 2. Managing the 8265 ........................................ 91
Chapter 8. Management Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Displaying 8265 Information ............................................ 93
Displaying the Power System ........................................... 95
Displaying 8265 Module Information ....................................... 96
Show the Inventory of Modules ........................................ 96
Show Inventory No_Verbose ........................................ 96
Show Inventory Verbose .......................................... 97
Displaying Module Details ........................................... 98
Show Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Show Module All ............................................... 99
Show Module Verbose .......................................... 100
Resetting Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Resetting Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Resetting the 8265 .............................................. 101
Resetting the ATM Subsystem ....................................... 102
Chapter 9. Managing the Power Subsystem ............................... 103
Budgeting Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Determining Switch Power Budget ..................................... 104
Displaying the Power Budget ....................................... 105
Increasing the Unallocated Power Budget ................................. 105
Establishing Power Fault-Tolerance ...................................... 106
Displaying Current Power Mode ....................................... 106
Changing the Power Mode .......................................... 107
8265 Module Power Up Strategy ........................................ 108
Default Power Up Strategy .......................................... 108
Specifying Power Up Order ......................................... 108
Power Class Settings ............................................. 109
vi IBM 8265: User's Guide

Displaying the Current Slot Status ..................................... 109
Using the Default Power Class Setting ................................... 109
Setting Power Class Manually ........................................ 110
Set Power Slot {slot} Class ........................................ 110
Power Class 10 Warnings ........................................ 110
8265 Module Power-Down Response ..................................... 111
Correcting a Power Deficit .......................................... 111
Powering Up With Insufficient Power .................................. 111
Power Supply Failure ........................................... 111
Chapter 10. Managing the Intelligent Cooling Subsystem ....................... 113
Operating Temperature and FAN Status Indicators ............................. 113
Operating Temperature Indicators ..................................... 113
Fan Status Indicators ............................................. 114
Automatic 8265 Module Power-Down ................................... 114
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Overheat Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Overheat Management Areas ........................................ 115
Power-Down Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Recovery Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Saved Power Management Configurations .................................. 117
Chapter 11. Updating Microcode and Picocode ............................. 119
Receiving Code Updates ............................................ 119
Automatic Notification of Updates ...................................... 119
Upload and Download Operations ....................................... 119
Inband Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Upgrading CPSW Microcode ....................................... 120
Upgrading FPGA Picocode in ATM Modules .............................. 120
Uploading Dumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Uploading Traces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Uploading the Error Log .......................................... 121
Manual Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Out-of-band Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Downloading Software to Controller Modules ................................. 123
Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Downloading When Two Controller Modules Installed ........................ 123
Downloading When One Controller Module Installed ......................... 124
Upgrading Controller Module Boot Microcode ............................... 124
Upgrading Controller Module Operational Microcode ........................... 124
Download Status Display ........................................... 124
Part 3. Appendixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Appendix A. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Troubleshooting Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Diagnosing Problems Concerning the Power Supply ............................ 128
Diagnosing Problems Concerning the CPSW Console ........................... 129
Control Point and Switch Module Problems .................................. 131
Diagnosing Problems from the CPSW System Status LCD ....................... 132
Diagnosing Problems in the Hardware Configuration ............................ 133
8265 Cannot PING an ARP Client ..................................... 134
Two Devices Using IP Over a PVC Cannot Ping Each Other ...................... 135
Contents vii

PVC failure, Cause Code 3, on NNI or ISSP ports ............................ 136
Problems with the ATM Network ........................................ 137
Checking ATM Address Registration .................................... 137
8265 Cannot PING the ARP Servers and Vice-versa .......................... 138
ATM Connection Problems ........................................... 139
Diagnosing LAN Emulation Problems ..................................... 141
8265 LEC Cannot Register to the LES/BUS ................................ 141
8265 LEC Cannot PING another Client and Vice-versa ......................... 143
ATM Forum LAN Emulation Ethernet and TCP/IP (DOS, OS/2) Not Working ............ 144
LAN Emulation JOIN failed. ATM Forum LE status xx .......................... 145
Problems in an IBM Proprietary LAN Emulation Environment ...................... 146
Network Access Security Problems ...................................... 149
All ATM Registration Attempts Rejected .................................. 149
Some ATM Registration Attempts Rejected ................................ 149
No ATM Addresses Displayed ........................................ 149
Address Cannot be Set: Limit Reached .................................. 149
Administrative Problems (Netview/SNMP/Telnet) .............................. 150
Getting Further Assistance ........................................... 153
TRACE Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Appendix B. Error and Information Codes ................................ 155
Q.2931 Error Codes for Clear Causes ..................................... 155
Maintenance Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Appendix C. ATM Address Formats .................................... 159
Network Prefix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
End System Part ................................................. 161
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
viii IBM 8265: User's Guide

Figures
1. Components of an ATM Campus Network ................................ 3
2. UNI, IISP, and PNNI VPC Links ...................................... 7
3. Working in Remote CPSW Sessions ................................... 19
4. Connecting Switches in Different Peer Groups ............................. 51
5. VP Tunneling Over a WAN ......................................... 52
6. PNNI Configuration Update Mechanism ................................. 55
7. PNNI Configuration Update (Critical) ................................... 56
8. PNNI Configuration Update (Non-critical) ................................. 57
9. Level ID Perspective of a Switch ATM Address ............................. 62
10. Example Address Table ........................................... 89
11. Upgrade Operations for ATM Microcode ................................ 119
12. NSAP Address Formats Supported in the 8265 ATM Subsystem .................. 159
 Copyright IBM Corp. 1994, 1998 ix

xIBM 8265: User's Guide

Notices
References in this publication to IBM products, programs, or services do not imply that IBM intends to
make these available in all countries in which IBM operates.
Any reference to an IBM product, program, or service is not intended to state or imply that only IBM's
product, program, or service may be used. Any functionally equivalent product, program, or service that
does not infringe any of IBM's intellectual property rights may be used instead of the IBM product,
program, or service. Evaluation and verification of operation in conjunction with other products, except
those expressly designated by IBM, is the user's responsibility.
IBM may have patents or pending patent applications covering subject matter in this document. The
furnishing of this document does not give you any license to these patents. You can send license
inquiries, in writing, to the IBM Corporation, IBM Director of Licensing, 500 Columbus Avenue, Thornwood,
New York 10594, U.S.A.
Product Page/Warranties
The following paragraph does not apply to the United Kingdom or to any country where such
provisions are inconsistent with local law.
INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION "AS IS" WITHOUT
WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Some states do not allow disclaimer of express or implied warranties in certain transactions, therefore this
statement may not apply to you.
Industry Standards Reflected in This Product
The IBM 8265 Nways ATM Switch complies with the following ATM standards:
ATM User-Network Interface (UNI) Specifications V3.0, V3.1, and V4.0 ATM Forum
ATM Interim Inter-Switch Signalling (IISP), ATM Forum
ATM Public Network-to-Network Interface (PNNI) Phase 1, ATM Forum
LAN Emulation over ATM Specifications V1.0, ATM Forum
Q.2110 Service Specific Connection-Oriented Protocol (SSCOP), ITU, March 17, 1994
Q.2130 Service Specific Coordination Function (SSCF) for support of signaling at the user-network
interface, March 17, 1994.
Trademarks and Service Marks
The following terms, denoted by an asterisk (*) in this publication, are trademarks or service marks of the
IBM Corporation in the United States or other countries:
AIX IBM
NetView for AIX Nways
RISC System/6000 Turboways
 Copyright IBM Corp. 1994, 1998 xi

xii IBM 8265: User's Guide

About this Book
This book descibes how to use the IBM 8265 Nways ATM Switch.
The ATM commands that you enter at the console to manage the ATM subsystem are described in detail
in the
IBM 8265 Nways ATM Switch Command Reference Guide , SA33-0458.
Who Should Use this Book
This book is intended for the following people at your site:
ATM network administrator
ATM network operator.
Prerequisite Knowledge
To understand the information presented in this
Features and characteristics of the IBM 8265 Nways ATM Switch as described in
IBM 8265 Nways
ATM Switch Product Description , GA33-0449.
Principles of Asynchronous Transfer Mode (ATM) technology
ATM Forum UNI Specification Versions 3.0, 3.1, and 4.0.
ATM Forum LAN Emulation Specification Version 1.0.
ATM Forum P-NNI Specification Version 1.0.
Where to Find More Information
The publications for the CPSW module and associated product documentation are listed in the
“Bibliography” on page 171.
World Wide Web ;You can access the latest news and information about IBM network products, customer
service and support, and microcode upgrades via the Internet, at the URL:
http://www.networking.ibm.com
Terms Used in This Book
The term Control Point refers to the ATM Control Point located in the IBM 8265 Nways ATM Switch
Control Point and Switch Module.
The term
Command Reference Guide refers to the IBM 8265 Nways ATM Switch Command Reference
Guide , SA33-0458.
 Copyright IBM Corp. 1994, 1998 xiii

xiv IBM 8265: User's Guide

Part 1. Configuring Your ATM Network
 Copyright IBM Corp. 1994, 1998 1

2IBM 8265: User's Guide

Chapter 1. Overview
ATM Networks
The purpose of an ATM network is to set up connections between ATM user devices, the two end points
of a connection.
IBM ATM subsystems can be interconnected in order to build a local, privately owned and administered
ATM network called an ATM Campus Network.
ATM
Campus Network
ATM
User
Devices
ATM
User
Devices
ATM Peer groups
IISP
IISP
IISP
PNNI
PNNI PNNI
PNNI
PNNI
UNI
UNI
UNI
UNI
IISP
IISP IISP
Figure 1. Components of an ATM Campus Network
 Copyright IBM Corp. 1994, 1998 3

Network Components
The terms used to describe the components of an ATM Campus Network are defined here:
ATM Campus Network One or more interconnected ATM peer groups.
This set of peer groups is controlled by one administrative domain and a single
private owner using one network access protocol (UNI).
ATM Peer Group One or more ATM switches interconnected by PNNI interfaces, and sharing the
same peer group identifier.
ATM User Device An end system that encapsulates data into ATM cells and forwards them to the
ATM subsystem across a UNI interface. Examples of ATM user devices are:
Servers and workstations equipped with ATM adapters
ATM concentrators or workstations equipped with ATM adapters
Routers with ATM adapters
LAN ATM bridges.
The control point passes the network prefix of an ATM address to attached end
systems using the Interim Local Management Interface (ILMI) protocol.
Network Interfaces
The following protocols are defined in ATM standards for use across the interfaces connecting the
components of an ATM campus network:
UNI Defines the interface between an ATM user device (such as a terminal, router, bridge, server,
workstation, or concentrator equipped with an ATM adapter) and the ATM network. The ATM
subsystem supports the private UNI defined by the ATM Forum UNI Specifications V3.0, V3.1
and V4.0.
IISP Defines the interface between two ATM switches belonging to different ATM routing domains.
In the current release, IISP switches are used to interconnect PNNI peer groups.
Operator intervention is required in order to define the addresses reachable over IISP links.
You can define multiple IISP connections between two different peer groups.
PNNI Defines the interface between ATM switches in the same peer group.
The PNNI interface supports networking functions without the need of operator intervention,
such as routing, node failure and node recovery, backup, and topology management.
You can define multiple PNNI connections between two ATM switches.
Public UNI ILMI is not supported.
VP tunnels can be defined on such a port, and signalling can be supported through the VP.
VOID ILMI is not supported.
VP tunnels can be defined on such a port, and signalling can be supported through the VP.
AUTO The interface is automatically set according to that of the incoming signal, as detected by ILMI.
4IBM 8265: User's Guide