Cabletron Systems MMAC-Plus 9T122-24 User manual

MMAC-Plus
™
9T122-24
Three Port Token Ring
MicroLAN
™
Switch 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 June 1995 by:
Cabletron Systems, Inc.
P.O. Box 5005
Rochester, NH 03867-0505
All Rights Reserved
Printed in the United States of America
Order Number: 9031206-01 June 95
SPECTRUM , Remote LANVIEW and LANVIEW are registered trademarks and MMAC-Plus and
MicroLAN are trademarks of Cabletron Systems, Inc.

ii
Notice
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.

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 ..................................................................................................................... 2-7
Multi-Ring Out Capability...........................................................................................2-7
Chapter 3 Operation
Bridging.......................................................................................................................... 3-1
Transparent Bridging............................................................................................. 3-2
Source Route Bridging .......................................................................................... 3-2
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

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 twenty four HUB connections, or two separate Token Rings with twelve
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 twenty four RJ-45 Trunk Coupling Unit (TCU) lobe
connectors. The connectors may be configured as one twenty four port ring
(default) or two twelve ports 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 MMAC-Plus
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

1-3
Features
Figure 1-1. The 9T122-24 MicroLAN Module
9T122-24
TOKEN RING
12
1
2
3
4
5
6
7
8
9
10
11
12
FNB
SMB CPU
13
14
15
16
17
18
19
20
21
22
23
24
16 Mb
MMAC PLUS

Introduction
1-4
Related Manuals
The manuals listed below should be used to supplement the procedures and
technical data contained in this manual.
MMAC-Plus Installation Guide
MMAC-Plus Operations Guide
MMAC-Plus 9C300-1 Environmental Module User’s Guide
MMAC-Plus 9C214-1 AC Power Supply User’s Guide
MMAC-Plus Local Management User’s Guide
Getting Help
If you need additional support with the MMAC-Plus, or if you have any
questions, comments or suggestions concerning this manual, feel free to contact
Cabletron Systems Technical Support:
By phone: [phone]
By CompuServe: GO CTRON from any ! prompt
By Internet mail: [email protected]
By mail: Cabletron Systems, Inc.
P.O. Box 5005
Rochester, NH 03867-0505

2-1
Chapter 2
Installation
Installing the MicroLAN Module
The MMAC-Plus MicroLAN Module may be installed into any of the 14 slots that
are available. To install, follow the steps below:
1. Switch off the power supplies and remove all power from the MMAC-Plus
chassis.
2. Remove the blank panels, covering the slots that the module is being
mounted in. All other slots must be covered, if modules are not being
installed, to ensure proper airflow and cooling.
3. Carefully remove the module from the shipping box. (Save the box and
packing materials in the event the module must be reshipped.)
4. Attach one end of the ESD wrist strap packaged with the MMAC-Plus chassis
to your wrist. Plug the other end into the ESD Wrist Strap Grounding
receptacle in the lower right corner of the MMAC-Plus Chassis shown in
Figure 2-1.
5. Remove the module from the plastic bag. Observe all precautions to prevent
damage from Electrostatic Discharge (ESD).
6. Carefully examine the module, checking for damage. If any damage exists,
DO NOT install the module. Contact Cabletron Systems Technical Support
immediately.
7. The modules are installed into the chassis by sliding them into slots and
locking down both the top and bottom plastic tabs, as shown in Figure 2-1.
Take care that the module slides in straight and engages the backplane
connectors properly. When installing the module, ensure that both circuit
cards are between the card guides, as shown in Figure 2-1. Check both the
upper and lower tracks of both cards.