Cabletron Systems TRXMIM-24A User manual

CABLETRON SYSTEMS, P. O. Box 5005 Rochester, NH 03866-5005
The Complete Networking Solution
™
TRXMIM
TM
USER’S
GUIDE
MODELS 22A, 24A, 42A, 44A

NOTICE
i
NOTICE
CabletronSystemsreservestherighttomakechangesinspecifications
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, 1996 by:
Cabletron Systems, Inc.
P.O. Box 5005, Rochester, NH 03866-0505
All Rights Reserved
Printed in the United States of America
Part Number 9031265 February, 1996
TRXMIM, TRBMIM, TDRMIM, TRMIM , TRMM-2 , and TRMM-4
are trademarks of Cabletron Systems, Inc.
SPECTRUM , LANVIEW , and Remote LANVIEW are registered
trademarks of Cabletron Systems, Inc.
IBM is a registered trademark of International Business Machines
Corporation.
DEC , VT200 , and VT300 are trademarks of Digital Equipment
Corporation.
CompuServe is a trademark of CompuServe, Inc.
Printed On Recycled Pape
r

FCC 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
limitsfor a ClassA digital device,pursuant to Part15 of theFCC 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
Thisdigital apparatus doesnotexceedtheClassA limits forradionoise
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.

CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT
iii
CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT
IMPORTANT: Before utilizing this product, carefully read this
License Agreement.
This document is an agreement between you, the end user, and
Cabletron Systems, Inc. (“Cabletron”) that sets forth your rights and
obligations with respect to the Cabletron software program (the
“Program”) contained in this package. The Program may be contained
in firmware, chips or other media. BY UTILIZING THE ENCLOSED
PRODUCT, YOU ARE AGREEING TO BECOME BOUND BY THE
TERMS OF THIS AGREEMENT, WHICH INCLUDES THE
LICENSE AND THE LIMITATION OF WARRANTY AND
DISCLAIMER OF LIABILITY. IF YOU DO NOT AGREE TO THE
TERMS OF THIS AGREEMENT, PROMPTLY RETURN THE
UNUSED PRODUCT TO THE PLACE OF PURCHASE FOR A FULL
REFUND.
CABLETRON SOFTWARE PROGRAM LICENSE
1. LICENSE. Youhavetherighttouse only the one(1) copy of theProgram provided
in this package subject to the terms and conditions of this License Agreement.
You may not copy, reproduce or transmit any part of the Program except as
permitted by the Copyright Act of the United States or as authorized in writing by
Cabletron.
2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, or
disassemble the Program.
3. APPLICABLE LAW. This License Agreement shall be interpreted and governed
under the laws and in the state and federal courts of New Hampshire. You accept
the personal jurisdiction and venue of the New Hampshire courts.

EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY
iv
EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY
1. EXCLUSION OF WARRANTY. Except as may be specifically provided by
Cabletron in writing, Cabletron makes no warranty, expressed or implied,
concerning the Program (including Its documentation and media).
CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE
SUPPLIED TO YOU BY CABLETRON IN WRITING, EITHER EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF
MERCHANTABLITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH
RESPECTTOTHE PROGRAM, THE ACCOMPANYINGWRITTENMATERIALS,
AND ANY ACCOMPANYING HARDWARE.
2. NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL
CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES
WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS
OF BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS
INFORMATION, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR RELIANCE
DAMAGES, OR OTHER LOSS) ARISING OUT OF THE USE OR INABILITY TO
USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME
STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY
FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR ON THE DURATION
OR LIMITATION OF IMPLIED WARRANTEES IN SOME INSTANCES THE
ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU.
UNITED STATES GOVERNMENT RESTRICTED RIGHTS
The enclosed product (a) was developed solely at private expense; (b)
contains “restricted computer software” submitted with restricted
rights in accordance with Section 52227-19 (a) through (d) of the
Commercial Computer Software - Restricted Rights Clause and its
successors, and (c) in all respects is proprietary data belonging to
Cabletron and/or its suppliers.
For Department of Defense units, the product is licensed with
“Restricted Rights” as defined in the DoD Supplement to the Federal
Acquisition Regulations, Section 52.227-7013 (c) (1) (ii) and its
successors, and use, duplication, disclosure by the Government is
subject to restrictions as set forth in subparagraph (c) (1) (ii) of the
Rights in Technical Data and Computer Software clause at 252.227-
7013. Cabletron Systems, Inc., 35 Industrial Way. Rochester, New
Hampshire 03867

CONTENTS
v
CONTENTS
CHAPTER 1 INTRODUCTION
1.1 USING THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
1.2 ABOUT THE TRXMIM FAMILY . . . . . . . . . . . . . . . . . .1-2
1.2.1 TCU Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
1.2.2 Port Assignments and Port Switching. . . . . . . . . . .1-4
1.2.3 Automatic Configuration at Power-Up. . . . . . . . . .1-7
1.2.4 Support for Passive MAU Workgroups . . . . . . . . .1-8
1.2.5 Interaction with Other MIMs in the MMAC . . . .1-10
1.2.6 LANVIEW LEDs . . . . . . . . . . . . . . . . . . . . . . . . .1-11
1.2.7 Network Management. . . . . . . . . . . . . . . . . . . . . .1-11
1.3 FURTHER INFORMATION . . . . . . . . . . . . . . . . . . . . . .1-12
1.3.1 Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . .1-12
1.3.2 Recommended Reading . . . . . . . . . . . . . . . . . . . .1-12
1.3.3 Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13
CHAPTER 2 INSTALLATION REQUIREMENTS &
SPECIFICATIONS OF OPERATION
2.1 GENERAL CABLING CONSIDERATIONS . . . . . . . . . .2-1
2.1.1 Network Performance Requirements . . . . . . . . . . .2-1
2.1.2 Installation Recommendations . . . . . . . . . . . . . . . .2-2
2.1.3 Maximum Number of Stations . . . . . . . . . . . . . . . .2-3
2.2 UTP CABLING SPECIFICATIONS . . . . . . . . . . . . . . . . .2-3
2.2.1 UTP Cable Categories. . . . . . . . . . . . . . . . . . . . . . .2-4
2.2.2 UTP Cable Lengths to Stations. . . . . . . . . . . . . . . .2-5
2.3 STP CABLING SPECIFICATIONS . . . . . . . . . . . . . . . . . 2-6
2.3.1 STP Cable Categories. . . . . . . . . . . . . . . . . . . . . . .2-6
2.3.2 STP Cable Lengths to Stations . . . . . . . . . . . . . . . .2-7
2.4 TRXMIM OPERATING SPECIFICATIONS . . . . . . . . . .2-8
2.4.1 Media Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
2.4.2 Connector Types. . . . . . . . . . . . . . . . . . . . . . . . . . .2-8

CONTENTS
vi
2.4.3 Ring Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
2.4.4 Ring Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.4.5 LANVIEW LEDs . . . . . . . . . . . . . . . . . . . . . . . . .2-10
2.5 OTHER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . 2-11
2.5.1 Hardware Specifications. . . . . . . . . . . . . . . . . . . .2-11
2.5.2 Environmental Requirements . . . . . . . . . . . . . . . .2-11
2.5.3 Safety Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-11
2.5.4 Service Projections . . . . . . . . . . . . . . . . . . . . . . . .2-12
CHAPTER 3 INSTALLING THE TRXMIM
3.1 GENERAL CONSIDERATIONS . . . . . . . . . . . . . . . . . . .3-1
3.2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.2.1 Unpacking the TRXMIM . . . . . . . . . . . . . . . . . . . .3-2
3.2.2 Setting the Default Ring Speed Jumper . . . . . . . . .3-3
3.2.3 Installing the TRXMIM into an MMAC . . . . . . . . 3-4
3.2.4 Boot-Up Check . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
3.2.5 Connecting Lobe Cabling. . . . . . . . . . . . . . . . . . . .3-6
3.2.6 Pre-Operational Testing . . . . . . . . . . . . . . . . . . . . .3-9
CHAPTER 4 TESTING AND TROUBLESHOOTING
4.1 INSTALLATION CHECKOUT. . . . . . . . . . . . . . . . . . . . .4-1
4.2 LANVIEW LED SIGNALS. . . . . . . . . . . . . . . . . . . . . . . .4-2
4.2.1 LANVIEW LED Definitions Table . . . . . . . . . . . .4-3
4.2.2 ERR - Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
4.2.3 BYP - Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
4.2.4 MGMT - Management Mode . . . . . . . . . . . . . . . . .4-5
4.2.5 16MB - Ring Speed . . . . . . . . . . . . . . . . . . . . . . . .4-5
4.2.6 IN USE - Ring In Use. . . . . . . . . . . . . . . . . . . . . . .4-6
4.2.7 PORT - Port Status . . . . . . . . . . . . . . . . . . . . . . . . .4-7

CONTENTS
vii
APPENDIX A INTRODUCTION TO FOUR-RING
FNB FUNCTIONALITY
A.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A.2 The Flexible Network Bus (FNB). . . . . . . . . . . . . . . . . . . A-1
A.3 FNB Operations Without Port Switching. . . . . . . . . . . . . A-1
A.4 FNB Operations With Port Switching . . . . . . . . . . . . . . . A-3
A.5 Configuration Specifications . . . . . . . . . . . . . . . . . . . . . . A-5

Page 1-1
CHAPTER 1
INTRODUCTION
Welcome to the Token Ring Port Switching Media Interface
Modules User’s Guide . This manual serves as a reference for the
installation and troubleshooting of Cabletron Systems modules
TRXMIM-22A™, TRXMIM-24A™, TRXMIM-42A™, and
TRXMIM-44A™.
The TRXMIM models -22A / -24A / -42A / -44A, shown in Figure
1-1, comprise a family of active UTP/STP concentrators with port
switching capability for Token Ring networks. All four models are
designed for installation into any Cabletron Systems Multi Media
Access Center
®
(MMAC™) equipped with a Flexible Network Bus
®
(FNB™). All four TRXMIMs are IEEE 802.5 compliant and IBM
compatible.
Figure 1-1. The TRXMIM-22A, TRXMIM-24A, TRXMIM-42A, and
TRXMIM-44A Token Ring Port Switching Concentrator Modules.
TRXMIM-22A
SWITCHING UTP
TOKEN RING
126
115 104
93
82 71
IN USEAUX2-16Mb
AUX1-16Mb
RING4-16Mb
RING3-16Mb
RING2-16Mb
RING1-16Mb
BYP
IN USE
IN USE
IN USE
IN USE
IN USE
MGNT
ERR
-PORTS-
TRXMIM-24A
SWITCHING UTP
TOKEN RING
126
115 104
93
82 71
IN USEAUX2-16Mb
AUX1-16Mb
RING4-16Mb
RING3-16Mb
RING2-16Mb
RING1-16Mb
BYP
IN USE
IN USE
IN USE
IN USE
MGNT
ERR
-PORTS-
24
23
22
21
20
19
18
17
16
15
14
13
IN USE
TRXMIM-42A
126
115 104
93
82 71
IN USEAUX2-16Mb
AUX1-16Mb
RING4-16Mb
RING3-16Mb
RING2-16Mb
RING1-16Mb
BYP
IN USE
IN USE
IN USE
IN USE
IN USE
MGNT
ERR
-PORTS-
SWITCHING STP
TOKEN RING
TRXMIM-44A
SWITCHING STP
TOKEN RING
126
115
104 93
82
71 IN USEAUX2-16Mb
AUX1-16Mb
RING4-16Mb
RING3-16Mb
RING2-16Mb
RING1-16Mb
BYP
IN USE
IN USE
IN USE
IN USE
MGNT
ERR
-PORTS-
24
23
22
21
20
19
18
17
16
15
14
13
IN USE
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USING THIS MANUAL
Page 1-2
1.1 USING THIS MANUAL
Prior to installing and operating the TRXMIM, please read through
this manual completely to become familiar with its contents and
with the features of the TRXMIM. If you are not familiar with port
switching and four-ring FNB applications, please begin by reading
Appendix A, Introduction to Four-Ring FNB Functionality .
A
general working knowledge of Token Ring (IEEE 802.5) networks is
helpful during installation.
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 installation, and
provides detailed specifications for each TRXMIM model.
Chapter 3, Installing the TRXMIM , contains instructions for
installing the TRXMIM into a Multi Media Access Center
®
(MMAC™) and attaching Token Ring station cabling.
Chapter 4, Testing and Troubleshooting , describes diagnostic
checks to assist in the correction of post-installation problems, and
provides detailed descriptions of LANVIEW
®
, Cabletron Systems’
built-in visual diagnostic and status monitoring system.
Appendix A, Introduction to Four-Ring FNB Functionality,
discusses the concepts of port switching and port assignment.
1.2 ABOUT THE TRXMIM FAMILY
The TRXMIM family of concentrator modules provides MMAC
users with a new level of network connectivity. Their port
switching ability (fully described in Section 1.2.2, Port
Assignments and Port Switching ) expands the number Token
Rings available within an MMAC and enables MMAC users to
switch ring connections between up to six Token Rings, without
changing a single cable connection. TRXMIMs also offer:
• complete compatibility with all Token Ring MIMs,