Cabletron Systems TRFMIM-22 User manual

TRFMIM-22, TRFMIM-26,
& TRFMIM-28
TOKEN RING FIBER
MEDIA INTERFACE MODULES
USER’S GUIDE
CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03867-0505
The Complete Networking Solution™
CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03867-0505

NOTICE
i
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 July 1993 by:
Cabletron Systems, Inc.
P.O. Box 5005
Rochester, NH 03867-0505
All Rights Reserved
Printed in the United States of America
Order Number: 9030896 July 93
TRFMIM-22 , TRFMIM-26 , TRFMIM-28 , TRMM , and MMAC are
trademarks of Cabletron Systems, Inc.
LANVIEW and Remote LANVIEW are registered trademarks of
Cabletron Systems, Inc.
IBM is a registered trademark of International Business Machines
Corporation.
Printed on Recycled Paper

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.
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.

TABLE OF CONTENTS
iii
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION
1.1 Using this Manual........................................................................ 1-1
1.2 The TRFMIM Concentrator Modules........................................ 1-2
1.3 Related Manuals........................................................................... 1-5
1.4 Recommended Reading .............................................................. 1-5
1.5 Getting Help ................................................................................. 1-5
CHAPTER 2 INSTALLATION REQUIREMENTS/
SPECIFICATIONS
2.1 Network Requirements............................................................... 2-1
2.2 Cable Specifications ..................................................................... 2-1
2.3 Operating Specifications ............................................................. 2-2
2.3.1 Ring Speed.......................................................................... 2-2
2.3.2 Ring Order .......................................................................... 2-3
2.3.3 LANVIEW LEDs................................................................ 2-3
2.3.4 General Specifications....................................................... 2-5
CHAPTER 3 INSTALLING THE CONCENTRATOR MODULE
3.1 Unpacking the Concentrator Module ....................................... 3-2
3.2 Configuring the Concentrator Module..................................... 3-3
3.3 Installing the Concentrator Module into the MMAC............. 3-3
3.4 Connecting Lobe Cabling............................................................ 3-4
3.5 Finishing the Installation ............................................................ 3-6

TABLE OF CONTENTS
iv
CHAPTER 4 TESTING AND TROUBLESHOOTING
4.1 Installation Checkout ...................................................................4-1
4.2 Using LANVIEW..........................................................................4-2

INTRODUCTION
1-1
CHAPTER 1
INTRODUCTION
Welcome to the TRFMIM Token Ring Fiber Media Interface
Modules Installation Guide . This manual serves as a reference for
installing and troubleshooting Cabletron Systems TRFMIM-22™,
TRFMIM-26™, and TRFMIM-28™.
The TRFMIM is a fiber optic token ring concentrator module for use
in the Cabletron MMACs. These concentrators are designed in
compliance with the IEEE 802.5J token ring fiber optic standard.
Available with six, twelve or eighteen ports, the TRFMIM provides
connectivity over multimode fiber optic cable.
Note: The term Concentrator Module is used throughout this manual
when describing features and functions that are common to the
TRFMIM-22, TRFMIM-26, and TRFMIM-28. The terms TRFMIM-22,
TRFMIM-26, and TRFMIM-28 are used when it is necessary to describe
features that are unique to any device.
1.1 USING THIS MANUAL
Prior to installing and operating your concentrator module, read
through this manual completely to familiarize yourself with its
contents and to gain an understanding of the features of the
concentrator module.
A general working knowledge of Token Ring (IEEE 802.5) networks
will be helpful when installing your concentrator module.
Chapter 1, Introduction , describes how to use this document,
provides an overview of the features and capabilities of each
concentrator module, and concludes with a list of related manuals.
Chapter 2, Installation Requirements/Specifications , lists the
network requirements that must be met before you begin installing

INTRODUCTION
1-2
your concentrator module. Detailed specifications for each of the
concentrator modules is also provided.
Chapter 3, Installing the Concentrator Module , contains
instructions for installing a concentrator module into the MMAC,
and attaching token ring station cabling.
Chapter 4, Testing and Troubleshooting , describes checks that you
can perform if you encounter problems after installing a
concentrator module. Instructions for using LANVIEW®,
Cabletron Systems built-in visual diagnostic and status monitoring
system, are also included.
1.2 THE TRFMIM CONCENTRATOR MODULES
The TRFMIM-22, TRFMIM-26, and TRFMIM-28, shown in
Figure 1-1, can be installed as a free-standing token ring network or
to provide fiber optic connectivity to an existing token ring
network. The concentrator modules are designed for installation
into a Cabletron Systems MMAC. Since they do not have externally
accessible Ring-In and Ring-Out ports, they are considered
concentrator modules. (A concentrator in token ring applications is
defined as a device with multiple TCU ports bound by externally
accessible Ring-In and Ring-Out ports.)
All concentrator modules are designed for installation into a
Cabletron Systems MMAC, where they can be used to create an
independent 6, 12, or 18 port ring or to expand an existing token
ring network. When any concentrator module is used within an
MMAC, the concentrator module is connected via the Flexible
Network Bus (FNB) to other token ring MIMs, repeaters, or bridges.

INTRODUCTION
1-3
Figure 1-1 The TRFMIM Token Ring Concentrator Modules
ERR
16 MBMGMT
TRFMIM-26
ERR
MGMT 16 MB
TRFMIM-28
FLNK
INS
1
FLNK
INS
2
FLNK
INS
3
FLNK
INS
4
FLNK
INS
5
FLNK
INS
6
FLNK
INS
7
FLNK
INS
8
FLNK
INS
9
FLNK
INS
10
FLNK
INS
11
FLNK
INS
12
ERR
16 MBMGMT
TRFMIM-22
FLNK
INS
1
FLNK
INS
2
FLNK
INS
3
FLNK
INS
4
FLNK
INS
5
FLNK
INS
6
FLNK
INS
7
FLNK
INS
8
FLNK
INS
9
FLNK
INS
10
FLNK
INS
11
FLNK
INS
12
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
FLNK
INS
13
FLNK
INS
14
FLNK
INS
15
FLNK
INS
16
FLNK
INS
17
FLNK
INS
18
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
FLNK
INS
1
FLNK
INS
2
FLNK
INS
3
FLNK
INS
4
FLNK
INS
5
FLNK
INS
6
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX

INTRODUCTION
1-4
Features of the concentrator module include:
Number of Connections
• TRFMIM-22 12 - fiber optic ports
• TRFMIM-26 6 - fiber optic ports
• TRFMIM-28 18 - fiber optic ports
Multiple concentrator modules can be installed into an MMAC to
increase the number of ports available on a token ring network.
Speed Fault Protection
If a station attempts to insert into the ring at a ring speed (4 or 16
Mb/s) different from what is set on the TRFMIM, that port is
automatically disabled to prevent the ring from beaconing. The
INS LED flashes red indicating the port with the speed fault is
disabled.
Multiple Concentrator Modules
Several concentrator modules can be installed into a single MMAC
and configured as independent rings or linked together into a
single ring network thru the FNB. Configuration guidelines can be
found in Chapter 3, Installing the Concentrator Module .
The TRMM (Token Ring Management Module) is used to manage
the TRFMIM. A variety of network management tools can be used
to control and monitor TRFMIMs (via the TRMM), including
Cabletron Systems Local Management, Remote LANVIEW/
Windows®, and SPECTRUM®.
LANVIEW LEDs
Several LEDs, on the front panel of the concentrator module, are
used to indicate the ring speed, presence of a network error, status,
and management statistics for each of the TCU ports. LANVIEW is

INTRODUCTION
1-5
an effective tool to help you quickly diagnose your physical layer
network problems.
1.3 RELATED MANUALS
The manuals listed below should be used to supplement the
procedures and other technical data provided in this manual. The
procedures in them will be referenced, where appropriate, but will
not be repeated.
Cabletron Systems MultiMedia Access Center Overview and Set
Up Guide
Cabletron Systems Token Ring Local Management for the
Cabletron Systems TRMM
1.4 RECOMMENDED READING
The following publications are recommended if more information
is required on implementing a token ring network.
Local Area Networks, Token Ring Access Method, IEEE Standard
802.5J
Commercial Building Wiring Standard, EIA Standard Proposal
No. 1907-B (if approved, to be published as EIA/TIA-568 )
LAN Troubleshooting Handbook , Mark Miller (1989, M&T
Publishing)