Cabletron Systems STH 24 STH-24 User manual

SmartSwitch 9000
9T122-24
User’s Guide
9031206-02

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 March 1998 by:
Cabletron Systems, Inc.
35 Industrial Way
Rochester, NH 03867-5005
All Rights Reserved
Printed in the United States of America
Order Number: 9031206-02
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.
Ethernet is a trademark of Xerox Corporation.

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 is a Class A product based on the standard of the Voluntary Control Council for Interference by
Information Technology Equipment (VCCI). If this equipment is used in a domestic environment,
radio disturbance may arise. When such trouble occurs, the user may be required to take corrective
actions.
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 Aprescrites dans le Règlement sur le brouillage radioélectrique
édicté par le ministère des Communications du Canada.

iii
Notice
DECLARATION OF CONFORMITY
ADDENDUM
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

Notice
iv

v
Contents
Chapter 1 Introduction
Features...........................................................................................................................1-1
Related Manuals............................................................................................................1-4
Getting Help .................................................................................................................. 1-4
Chapter 2 Installation
Installing the MicroLAN Module...............................................................................2-1
The Reset Switch ........................................................................................................... 2-3
User-Accessible Components......................................................................................2-4
Setting the Module Card DIP Switch.........................................................................2-5
Ring Speed .....................................................................................................................2-6
Multi-Ring Out Capability...........................................................................................2-7
Chapter 3 Operation
Bridging..........................................................................................................................3-2
Transparent Bridging.............................................................................................3-2
Source Route Bridging .......................................................................................... 3-3
Spanning Tree Algorithm......................................................................................3-3
Flexible Network Bus (FNB)........................................................................................3-4
System Management Buses .........................................................................................3-4
SMB-1 Bus...............................................................................................................3-4
SMB-10 Bus.............................................................................................................3-4
System Diagnostic Controller...................................................................................... 3-5
DC/DC Converter ........................................................................................................3-5
FNB Interface.................................................................................................................3-5
i960 Core......................................................................................................................... 3-5
Chapter 4 LANVIEW LEDs
Chapter 5 Specifications
Safety...............................................................................................................................5-1
Service............................................................................................................................. 5-1
Physical...........................................................................................................................5-2
Dimensions:............................................................................................................ 5-2
Weight:.....................................................................................................................5-2
Electrical.........................................................................................................................5-2

Contents
vi

1-1
Chapter 1
Introduction
The 9T122-24 MicroLAN™ Switch Module, shown in Figure 1-1, is a three port
Token Ring bridge and router module. This module supports either one token
ring with 24 HUB connections, or two separate Token Rings with 12 HUB
connections, and an interface to the FNB backplane.
Features
Processor
The 9T122-24 is equipped with an advanced Intel i960 microprocessor. This
microprocessor provides a platform for all management functions within a
scalable RISC-based architecture.
System Management
Interfaces to the two System Management Buses (SMB-1 and SMB-10) for
intermodule management.
Connectivity
The 9T122-24 provides 24 RJ-45 Trunk Coupling Unit (TCU) lobe connectors. The
connectors may be configured as one 24-port ring (
default ) or two 12-port rings.
Bridging/Routing
Bridging/Routing between the front panel Token Ring connections and/or to any
other module in the chassis via FNB-1 or FNB-2 of the FNB bus. The module is
capable of Transparent Bridging or Source Route Bridging. IEEE 802.1d Spanning
Tree Protocol is supported in all bridging functions. Translational bridging
between Source Routing and Transparent Frames types is also performed.

Introduction
1-2
Management Information Base (MIB) Support
The 9T122-24 module provides MIB support including:
• IETF MIB II (RFC 1213)
• IETF RMON MIB (RFC 1271 and 1513)
• IETF Bridge MIBs (RFC 1493 and 1525)
• IEEE 802.5 Token Ring MIB (RFC 1231)
• Cabletron Enterprise MIBs
Ring Security
This feature prevents unauthorized stations from attaching to the ring. Using
Local or Remote Management, the module may be configured as to which MAC
addresses are allowed to operate on the ring.
Multi-Ring Out Capability
With this feature any port of the module may be configured as a ring-out port
through management software. In this configuration a stand-alone passive
concentrator (such as an IBM 8228 MAU) may be added to the ring.
Telnet
A telnet session can be set up with the module to provide access to the Local
Management screens.
LANVIEW LEDs
The 9T122-24 use LANVIEW – the Cabletron Systems built-in visual diagnostic
and status monitoring system. With LANVIEW LEDs, you can quickly identify
the device, port, and physical layer status at a glance.
Hot Swapping
The 9T122-24 can be installed or removed from the chassis while the SmartSwitch
9000 is powered up without affecting the operation of the remaining modules in
the chassis.
For a complete list of supported MIBs, refer to the release notes provided in the
module package.
NOTE