Cabletron Systems 9A426-01 User manual

903number
SmartSwitch 9000
9A426-01 ATM Module
User’s Guide

i
Notice
Notice
Cabletron Systems reserves the right to make changes in specifications and other information
contained in this document without prior notice. The reader should in all cases consult Cabletron
Systems to determine whether any such changes have been made.
The hardware, firmware, or software described in this manual is subject to change without notice.
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL, INDIRECT,
SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING BUT NOT LIMITED
TO LOST PROFITS) ARISING OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION
CONTAINED IN IT, EVEN IF CABLETRON SYSTEMS HAS BEEN ADVISED OF, KNOWN, OR
SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH DAMAGES.
© Copyright February 1998 by:
Cabletron Systems, Inc.
35 Industrial Way
Rochester, NH 03867-5005
All Rights Reserved
Printed in the United States of America
Order Number: 9032055-02
LANVIEW is a registered trademark and SmartSwitch is a trademark of Cabletron Systems, Inc.
CompuServe is a registered trademark of CompuServe, Inc.
i960 microprocessor is a registered trademark of Intel Corp.

Notice
ii
FCC Notice
This device complies with Part 15 of the FCC rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial environment.
This equipment uses, generates, and can radiate radio frequency energy and if not installed in
accordance with the operator’s manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause interference in which case the user
will be required to correct the interference at his own expense.
WARNING: Changes or modifications made to this device which are not expressly approved by the
party responsible for compliance could void the user’s authority to operate the equipment.
VCCI Notice
This equipment is in the 1st Class Category (information equipment to be used in commercial and/or
industrial areas) and conforms to the standards set by the Voluntary Control Council for Interference
by Information Technology Equipment (VCCI) aimed at preventing radio interference in commercial
and/or industrial areas.
Consequently, when used in a residential area or in an adjacent area thereto, radio interference may be
caused to radios and TV receivers, etc.
Read the instructions for correct handling.

iii
Notice
DOC Notice
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital
apparatus set out in the Radio Interference Regulations of the Canadian Department of
Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables
aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique
édicté par le ministère des Communications du Canada.

Notice
iv
DECLARATION OF CONFORMITY
Application of Council Directive(s): 89/336/EEC
73/23/EEC
Manufacturer’s Name: Cabletron Systems, Inc.
Manufacturer’s Address: 35 Industrial Way
PO Box 5005
Rochester, NH 03867
European Representative Name: Mr. J. Solari
European Representative Address: Cabletron Systems Limited
Nexus House, Newbury Business Park
London Road, Newbury
Berkshire RG13 2PZ, England
Conformance to Directive(s)/Product Standards: EC Directive 89/336/EEC
EC Directive 73/23/EEC
EN 55022
EN 50082-1
EN 60950
Equipment Type/Environment: Networking Equipment, for use in a
Commercial or Light
Industrial Environment.
We the undersigned, hereby declare, under our sole responsibility, that the equipment packaged with
this notice conforms to the above directives.
Manufacturer Legal Representative in Europe
Mr. Ronald Fotino Mr. J. Solari
____________________________________________________ ______________________________________________________
Full Name Full Name
Principal Compliance Engineer Managing Director - E.M.E.A.
____________________________________________________ ______________________________________________________
Title Title
Rochester, NH, USA Newbury, Berkshire, England
____________________________________________________ ______________________________________________________
Location Location

v
Contents
Chapter 1 Introduction
Features........................................................................................................................... 1-2
Related Manuals............................................................................................................ 1-6
Getting Help .................................................................................................................. 1-6
Chapter 2 Preparing and Installing the
9A426-01 Module
Unpacking the Module................................................................................................. 2-1
The Module’s Physical Layout.................................................................................... 2-2
User-Accessible Components on the Module’s Motherboard................................ 2-3
Installing an APIM in the 9A426-01 Module ..................................................... 2-4
User-Accessible Components on the Module’s Daughterboard............................ 2-9
DIP Switch............................................................................................................. 2-10
Removing the daughterboard from the motherboard.................................... 2-12
Installing the Module into the SmartSwitch 9000 Chassis.................................... 2-16
The Reset Switch ......................................................................................................... 2-18
Chapter 3 Operation
LAN Emulation ............................................................................................................. 3-3
System Management Buses ......................................................................................... 3-3
SMB-1 Bus ............................................................................................................... 3-3
SMB-10 Bus ............................................................................................................. 3-4
System Diagnostic Controller...................................................................................... 3-4
DC/DC Converter ........................................................................................................ 3-4
INB Network Interface Block ...................................................................................... 3-5
FDDI Network Interface Block.................................................................................... 3-5
ATM Network Interface Block .................................................................................... 3-5
SecureFast Virtual Networking................................................................................... 3-6
i960 Core......................................................................................................................... 3-6
Chapter 4 LANVIEW LEDs

Contents
vi
Chapter 5 Specifications
Technical Specifications................................................................................................5-1
CPU ..........................................................................................................................5-1
Memory ...................................................................................................................5-1
Address Table Size .................................................................................................5-1
Power.......................................................................................................................5-1
Network Interfaces ................................................................................................5-1
Standards.................................................................................................................5-2
Safety...............................................................................................................................5-2
Service.............................................................................................................................5-2
Physical...........................................................................................................................5-3
Dimensions .............................................................................................................5-3
Weight......................................................................................................................5-3
Environment ...........................................................................................................5-3

1-1
Chapter 1
Introduction
The 9A426-01 ATM SmartSwitch Module is a hardware-based switching module
that supports multiple interfaces simultaneously. The module’s interconnecting
interfaces include:
• A front panel ATM interface via a user-installed ATM Port Interface Module
(APIM)
• A fixed interface to the SmartSwitch 9000 Internal Network Bus (INB)
• A user-configurable interface to the SmartSwitch 9000 Flexible Network Bus
(FNB-1 or FNB-2).
Each data packet, regardless of the interface in which the packet enters the
module (ATM, FNB, or INB), is initially converted into a common format known
as a canonical frame. Each canonical frame’s header section contains source and
destination information. All canonical frames are forwarded to the module’s
group of SmartSwitch Application Specific Integrated Circuits (ASICs)
collectively known as the SmartSwitch Core.
The SmartSwitch Core can process data in two modes:
• Traditional Switch - When operating as a traditional switch, the Fast Packet
Switch makes filtering/forwarding decisions based on Destination Address,
with standard IEEE 802.1d learning.
• Secure Fast Switch (SFS) - When operating in SFS mode, all filtering/
forwarding decisions are based on a Destination Address-Source Address pair,
and the associated receive/transmit port.
Canonical frames that enter the 9A426-01 Module via the backplane interface
(FNB or INB) and are destined for the module’s front panel interface(s), are
converted by the module’s ATM Network Interface Block (ANIB) into 53 byte
ATM cells. The ANIB uses a separate set of ASICs to perform hardware-based
packet to cell conversions. This conversion process is an integral part of the
module’s ability to provide high-performance interconnections between legacy
LANs and ATM attached networks.

Introduction
1-2
Conversely, canonical frames destined for the FNB bus on the SmartSwitch 9000
backplane are converted into FDDI packets via the 9A426-01 Module’s FDDI
Network Interface Block (FNIB), and then forwarded onto the FNB.
Canonical frames destined for the INB bus on the SmartSwitch 9000 backplane are
converted into fixed length data packets via the 9A426-01 Module’s INB Network
Interface Block (INB NIB), and then forwarded onto the INB.
Features
Processor
The 9A426-01 Module is equipped with an advanced Intel i960 microprocessor.
This microprocessor provides a platform for all management functions within a
scalable RISC-based architecture.
SmartSwitch Core
The 9A426-01 Module incorporates the SmartSwitch Core, a collection of custom
Application Specific Integrated Circuits (ASICs) designed specifically for high
speed switching. The SmartSwitch ASIC bus is 64 bits wide with a bandwidth of
640 Mbps. Since all frame translation, address lookups, and forwarding decisions
are performed in hardware, the 9A426-01 Module can obtain a throughput
performance of greater than 750K pps.
Management
The 9A426-01 Module has one full implementation of SMT (Version 7.3) and
SNMP for local and remote management. Local management is provided through
the RS-232 COM ports on the SmartSwitch 9000 Environmental Module using a
standard VT-220™ terminal or emulator, or via telnet. Remote management is
achieved through Cabletron’s SPECTRUM or any SNMP-compliant management
tool. Switching statistics of the selected FNB interface include frames filtered,
frames forwarded, and all Spanning Tree Protocol parameters.
Connectivity
The 9A426-01 Module is designed to accept two standard Cabletron ATM Port
Interface Modules (APIMs). However, only one APIM can be active at one time (a
second APIM becomes active whenever the first APIM becomes inactive). Thus,
the second APIM is not necessary, but can be installed if physical layer
redundancy is desired. This redundancy protects against loss of data due to cable
failure, ATM Switch failure or APIM failure. If two APIMs are installed in the
9A426-01 Module, the second APIM does not have to be the same as the first
APIM. For example, you can place an APIM-21 (multimode fiber) in one APIM
port, and an APIM-29 (single mode fiber) in the module’s second APIM port.
Cabletron APIMs are designed to accept a variety of cable types including: single
mode fiber, multimode fiber, twisted-pair, and coaxial.