Cabletron Systems TRMIM 24A TRMIM-24A User manual

TRXI-22A, TRXI-24A, TRXI-42A,
AND TRXI-44A ACTIVE
TOKEN RING INTELLIGENT HUB
USER’S GUIDE
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.
INNOEVENTSHALLCABLETRONSYSTEMSBELIABLEFORANYINCIDENTAL,
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 May 1994 by:
Cabletron Systems, Inc.
P.O. Box 5005, Rochester, NH 03867-0505
All Rights Reserved
Printed in the United States of America
Order Number: 9031079 May 94
TRXI-22A , TRXI-24A , TRXI-42A , TRXI-44A, and TPIM 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

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.
CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT
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You may not copy, reproduce or transmit any part of the Program except as
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Cabletron.

NOTICE
iii
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Data and Computer Software clause at 252.227-7013. Cabletron Systems, Inc., 35
Industrial Way. Rochester, New Hampshire 03867

CONTENTS
v
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION
1.1 USING THIS MANUAL............................................................1-1
1.2 GETTING HELP........................................................................1-2
1.3 TRXI ACTIVE CONCENTRATOR OVERVIEW......................1-2
1.4 TRXI FEATURES......................................................................1-3
1.5 REMOTE NETWORK MANAGEMENT CAPABILITIES ......1-6
1.6 RECOMMENDED READING...................................................1-6
CHAPTER 2 REQUIREMENTS/SPECIFICATIONS
2.1 CABLE SPECIFICATIONS.......................................................2-1
2.1.1 UTP Cable Specifications for the TRXI-22A/24A
Lobe Ports and TPIM-T2..............................................2-2
2.1.2 STP Cable Specifications For The TRXI-42A/44A
Lobe Ports and TPIM-T1/T4.........................................2-4
2.1.3 Mixed Cable Types........................................................2-6
2.1.4 Multimode Fiber Optic Cable Specifications for
the TPIM-F2..................................................................2-7
2.1.5 Single Mode Fiber Optic Cable Specifications for
the TPIM-F3..................................................................2-8
2.2 CABLE RECOMMENDATIONS/TROUBLESHOOTING.......2-9
2.3 COM 1/COM 2 PORT SPECIFICATIONS..............................2-11
2.4 TPIM SPECIFICATIONS........................................................2-12
2.5 GENERAL SPECIFICATIONS...............................................2-17
CHAPTER 3 INSTALLATION
3.1 UNPACKING THE TRXI..........................................................3-1
3.2 ATTACHING THE STRAIN RELIEF BRACKET ...................3-1
3.3 INSTALLING THE TRXI..........................................................3-2
3.3.1 Rack Mounting the TRXI..............................................3-3
3.3.2 Wall Mounting the TRXI..............................................3-4
3.3.3 Free-Standing Installation...........................................3-5
3.4 SETTING THE RING SPEED SWITCH..................................3-6
3.5 SETTING THE NVRAM SWITCH ...........................................3-7
3.6 CONNECTING THE TRXI TO THE POWER SOURCE.........3-8
3.7 CONNECTING THE NETWORK LOBE PORT CABLING....3-8
3.8 INSTALLING THE TPIM RI/RO MODULES........................3-11

CONTENTS
vi
3.8.1 Setting the TPIM’s Phantom Switch and
RI/RO Switch...............................................................3-12
3.8.2 Installing a TPIM to the TRXI....................................3-13
3.8.3 Connecting a Twisted Pair Segment to
the TPIM-T1 ................................................................3-14
3.8.4 Connecting a Twisted Pair Segment to
the TPIM-T2 or TPIM-T4............................................3-15
3.8.5 Connecting a Fiber Optic Link Segment to
the TPIM-F2 or TPIM-F3............................................3-16
3.9 FINISHING THE INSTALLATION........................................3-18
CHAPTER 4 TESTING AND TROUBLESHOOTING
4.1 CHECKING THE INSTALLATION..........................................4-1
4.2 USING LANVIEW LEDs...........................................................4-2
4.3 USING THE LCD DISPLAY .....................................................4-3
4.3.1 Static System Messages................................................4-4
4.3.2 Alarm Messages.............................................................4-5
4.3.3 Unsaved Initialization Messages..................................4-6
4.3.4 Saved System Messages................................................4-7
CHAPTER 5 LOCAL MANAGEMENT
5.1 MANAGEMENT TERMINAL REQUIREMENTS...................5-2
5.1.1 Attaching the Management Terminal..........................5-2
5.1.2 Setting the Management Terminal Setup
Parameters.....................................................................5-3
5.1.3 Modem Cable Configuration and Setup.......................5-4
5.2 ACCESSING LOCAL MANAGEMENT....................................5-5
5.3 USING LOCAL MANAGEMENT..............................................5-6
5.3.1 The System Level Screen..............................................5-8
5.3.2 The SNMP Community Names Screen......................5-13
5.3.3 The SNMP Traps Screen.............................................5-15
5.3.4 The Ring Security Screen............................................5-17
5.3.5 The Device Statistics Screen.......................................5-22
5.3.6 The Chassis Status View Screen................................5-28
5.3.7 The Component Status View Screen..........................5-30
5.3.8 The SNMP Tools Screen..............................................5-31

INTRODUCTION
Page 1-1
CHAPTER 1
INTRODUCTION
Welcome to the Cabletron Systems TRXI-22A, TRXI-24A, TRXI-42A,
and TRXI-44A Active Token Ring Intelligent Hub User’s Guide .
This manual provides installation instructions, network
requirements, and reference information for the TRXI Active
stand-alone concentrator.You should have an understanding of Token
Ring (IEEE 802.5) type data communications networks and their
physical layer components before installing the TRXI.
Note : This manual uses the term TRXI to describe the TRXI -22A, 24A,
42A, and 44A unless otherwise specified.
1.1 USING THIS MANUAL
The following summary provides information about each chapter in
this manual. Read through the summary to familiarize yourself with
this manual’s organization and content.
Chapter 1,
Introduction , outlines the contents of this manual and
describes features of the TRXI. It also lists recommended reading for
implementing a Token Ring network.
Chapter 2, Requirements/Specifications , describes cabling
requirements, network guidelines, and TRXI operating specifications.
Chapter 3, Installation , contains instructions for installing your
TRXI and connecting it to the network using the various media types.
This chapter includes instructions for setting the Ring Speed Switch,
setting the NVRAM Switch, installing the TPIMs, and setting the
TPIM Phantom Switch.
Chapter 4, Testing and Troubleshooting , contains procedures for
testing the TRXI after installation, a description of the LANVIEW®
LEDs, and explains the front panel LCD display.
Chapter 5, Local Management , describes how to access Local
Management. It also describes each of the Local Management screens
and the available commands.

INTRODUCTION
Page 1-2
1.2 GETTING HELP
If you need additional support related to the Cabletron Systems TRXI,
or if you have any questions,comments,or suggestions concerning this
manual, contact Cabletron Systems Technical Support:
By phone......................... [phone]
Monday-Friday; 8am - 8pm EST
By CompuServe
®
............ GO CTRON from any ! prompt
By Internet mail............. [email protected]
1.3 TRXI ACTIVE CONCENTRATOR OVERVIEW
The TRXI stand-alone concentrator provides 12 or 24 RJ45 active
Trunk Coupling Units (TCUs) for Shielded Twisted Pair (STP) or
Unshielded Twisted Pair (UTP) network lobe connections. The
TRXI-22A, 24A, 42A, and 44A are functionally identical with the
exception of the TCU lobe ports. Cabletron offers the following TRXI
configurations:
•
TRXI-22A , twelve active RJ45 TCU lobe ports that support
category 3, 4, and 5 UTP cabling.
• TRXI-24A , twenty-four active RJ45 TCU lobe ports that
support category 3, 4, and 5 UTP cabling.
• TRXI-42A , twelve active RJ45 TCU lobe ports that support
IBM Type 1, 2, 6, and 9 STP cabling.
• TRXI-44A , twenty-four active RJ45 TCU lobe ports that
support IBM Type 1, 2, 6, and 9 STP cabling.
Figure 1-1. The TRXI-24A
DISPLAY
RI
RO
TRXI-24A TOKEN RING HUB WITH LANVIEW®
24 23 22 21 20 19 18 17 16 15 14 13
12 11 10 9 8 7 6 5 4 3 2 1
COM 2 COM 1
18 17 16 15 14 13
6 5 4 3 2 1
24 23 22 21 20 19
12 11 10 9 8 7 RO
RI
PWR
CPU ACT
MGMT16 Mb/s
RESET
DISPLAY

INTRODUCTION
Page 1-3
You can upgrade the TRXI-22A and TRXI-42A to twenty-four ports
using a twelve port upgrade kit available from Cabletron Systems
(Cabletron Part Number TRXI-24A-UGKIT or TRXI-44A-UGKIT).
The TRXI provides two additional ports for Ring In and Ring Out
(RI/RO) connections.These ports support Cabletron’s Token Ring Port
Interface Modules (TPIMs).TPIMs provide full repeater functionality.
They are not included with the TRXI, but can be ordered separately
from Cabletron.Table 1-1 lists each TPIM.
1.4 TRXI FEATURES
Active TCU Ports
The active TCU ports regenerate, reshape and filter the incoming
signal permitting UTP lobe cable lengths of up to
100 meters and STP
lobe cable lengths up to 150 meters at 16 Mbps ring speed.
Cable Signal Polarity
Differential Manchester encoding is utilized for each of the
concentrator module TCU ports.This permits passing data regardless
of receive link polarity.
Note : If a reversed polarity condition is discovered,the segment should
be removed from the network and wired correctly (according to the
connector wiring shown in Chapter 2, Requirements / Specifications).
This will avoid the potential for future compatibility problems.
Speed Fault Protection
If a station attempts to insert into the ring at a ring speed
(4 or 16 Mbps) different from what is set on the TRXI, that port is
automatically bypassed to prevent the ring from beaconing.The Lobe
Port Status LED blinks indicating the port with the speed fault is
bypassed.
Local Management
Local Management provides the tools to manage the TRXI and all of
its attached segments.You access Local Management by connecting a
Digital Equipment Corporation VT™ 320 series terminal or a PC
using VT320 emulation software to the TRXI’s COM 1 port.

INTRODUCTION
Page 1-4
Token Ring Port Interface Modules
TPIMs are optional features that let you expand your trunk
connections using different media types.TPIMs have embedded
repeaters and retime all data. Cabletron offers a variety of TPIMs for
trunk Ring In or Ring Out connections.Table 1-2 lists each TPIM.
Ring Speed Switch
The Ring Speed Switch lets you select ring speeds of either 4 Mbps or
16 Mbps.The factory default setting is 16 Mbps.
Flash EEPROMs
The TRXI uses Flash EEPROMs that allow you to download new and
updated firmware using Cabletron System’s Remote LANVIEW/
Windows, version 2.3 or later or any device using BOOTP or TFTP
protocols.
LANVIEW LEDs
Cabletron Systems’ LANVIEW LED Status Monitoring and
Diagnostics System is a convenient troubleshooting tool that helps you
diagnose power failures, RI/RO status, cable faults, ring speed, link
problems, and network activity.
Cabletron’s Distributed LAN Monitor
Cabletron Systems’ Distributed LAN Monitor (DLM) is a software
option for the TRXI. DLM provides a method for locally polling and
monitoring devices on a local area network to minimize network
management traffic on an enterprise, campus, or wide area network.
Table 1-1. TPIMs
TPIM Media Type Connector
TPIM-T1 Shielded Twisted Pair DB9
TPIM-T2 Unshielded Twisted Pair RJ45
TPIM-T4 Shielded Twisted Pair RJ45
TPIM-F2 Multimode Fiber Optic ST
TPIM-F3 Single mode Fiber Optic ST