Cabletron Systems STHI User manual

CABLETRON SYSTEMS, P. O. Box 5005 Rochester, NH 03866-5005
STHI
INTELLIGENT
TOKEN RING STACKABLE HUB
USER’S GUIDE

NOTICE
iii
NOTICE 1
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 May, 1995 by:
Cabletron Systems, Inc.
P.O. Box 5005, Rochester, NH 038666-5005
All Rights Reserved
Printed in the United States of America
Order Number: 9031390 May, 1995
SPECTRUM , LANVIEW , Remote LANVIEW , and HubSTACK , STH, STHI, are
trademarks of Cabletron Systems, Inc.
i960 is a registered trademark of Intel Corporation.
DEC and VT100 are trademarks of Digital Equipment Corporation.
CompuServe is a registered trademark of CompuServe, Inc.
Windows is a registered trademark of Microsoft Corporation.
Printed On Recycled Pa
per

NOTICE
iv
FCC NOTICE 2
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 3
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 4
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.

NOTICE
v
CABLETRON SOFTWARE PROGRAM LICENSE 5
1. LICENSE. You have the right to use only the one (1) copy of the Program
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 6
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 RESPECT TO THE PROGRAM, THE ACCOMPANYING WRITTEN
MATERIALS, 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.

NOTICE
vi
UNITED STATES GOVERNMENT
RESTRICTED RIGHTS 7
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 03866

CONTENTS
vii
CHAPTER 1 Introduction
1.1 Contents of This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1.2 STHI Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1.2.1 LANVIEW LEDs . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
1.2.2 TCU Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
1.2.3 RI & RO Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
1.2.4 Hub-By-Hub Bypass Control . . . . . . . . . . . . . . . . .1-5
1.2.5 Automatic Beacon Recovery Process. . . . . . . . . . .1-5
1.2.6 Support for Passive MAU Workgroups . . . . . . . . .1-5
1.2.7 Flash Downloads. . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
1.2.8 IP Address Discovery . . . . . . . . . . . . . . . . . . . . . . .1-6
1.2.9 Local Management . . . . . . . . . . . . . . . . . . . . . . . . .1-8
1.2.10 Remote Network Management Capabilities. . . . . .1-8
1.3 Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
1.4 Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
CHAPTER 2 Requirements & Specifications
2.1 General Networking Considerations. . . . . . . . . . . . . . . . . .2-1
2.2 Operating Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.2.1 Hubstack Interconnect Cables. . . . . . . . . . . . . . . . .2-3
2.2.2 TCU and COM Ports . . . . . . . . . . . . . . . . . . . . . . .2-3
2.2.3 Supported MIB Groups. . . . . . . . . . . . . . . . . . . . . .2-5
2.2.4 Ring Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
2.2.5 Ring Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.2.6 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
2.2.7 Computing Hardware . . . . . . . . . . . . . . . . . . . . . . .2-7
2.2.8 Environmental Requirements . . . . . . . . . . . . . . . . .2-7
2.2.9 Physical Specifications . . . . . . . . . . . . . . . . . . . . . .2-7
CHAPTER 3 Installation
3.1 Installing the STHI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3.1.1 Unpacking the STHI. . . . . . . . . . . . . . . . . . . . . . . .3-1
3.1.2 Stacking the STHI. . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.1.3 Attaching the Strain Relief Bracket . . . . . . . . . . . .3-2

CONTENTS
viii
3.1.4 Rack-Mounting the STHI . . . . . . . . . . . . . . . . . . . .3-2
3.1.5 Wall-Mounting the STHI . . . . . . . . . . . . . . . . . . . .3-3
3.1.6 Free-Standing Installations . . . . . . . . . . . . . . . . . . .3-5
3.1.7 Connecting the STHI to the Power Source. . . . . . .3-6
3.2 TPIM Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
3.3 Finishing the Installation. . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
CHAPTER 4 Troubleshooting
4.1 LANVIEW LED Signals . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4.2 Trouble Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4.3 The Reset Button. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
4.4 NVRAM Reset Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
CHAPTER 5 Local Management
5.1 Accessing LM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
5.1.1 Dumb Terminal Configuration . . . . . . . . . . . . . . . .5-2
5.1.2 Console Cable Configuration . . . . . . . . . . . . . . . . .5-3
5.1.3 Entering LM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
5.2 Using LM Screens. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
5.2.1 Working with LM Screens . . . . . . . . . . . . . . . . . . .5-4
5.2.2 Screen Hierarchy. . . . . . . . . . . . . . . . . . . . . . . . . . .5-6
5.2.3 Screen Introductions . . . . . . . . . . . . . . . . . . . . . . . .5-6
5.3 The System Level Screen . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
5.3.1 System Date and System Time. . . . . . . . . . . . . . . .5-8
5.3.2 IP Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
5.3.3 Subnet Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9
5.3.4 Enable IP Address Discovery . . . . . . . . . . . . . . . . .5-9
5.3.5 Enable Beacon Recovery . . . . . . . . . . . . . . . . . . .5-10
5.3.6 MAC Address . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11
5.3.7 Locally Administered Address . . . . . . . . . . . . . . .5-11
5.4 The SNMP Community Names Screen . . . . . . . . . . . . . .5-11
5.4.1 Community Name. . . . . . . . . . . . . . . . . . . . . . . . .5-12
5.4.2 Access Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12
5.5 The SNMP Traps Screen . . . . . . . . . . . . . . . . . . . . . . . . .5-13

CONTENTS
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5.5.1 Trap Destination . . . . . . . . . . . . . . . . . . . . . . . . . .5-13
5.5.2 Trap Community Name . . . . . . . . . . . . . . . . . . . .5-13
5.5.3 Enable Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-13
5.6 The Chassis Status View Screen. . . . . . . . . . . . . . . . . . . .5-14
5.6.1 The Screen Mode Screen Command. . . . . . . . . . .5-14
5.6.2 Multiplexer Configuration Fields . . . . . . . . . . . . .5-15
5.6.3 Port Configuration Fields . . . . . . . . . . . . . . . . . . .5-16
5.6.4 NEXT and PREVIOUS. . . . . . . . . . . . . . . . . . . . .5-20
5.6.5 ENABLE ALL PORTS. . . . . . . . . . . . . . . . . . . . .5-20
5.6.6 REFRESH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-20
5.7 The Component Status Screen . . . . . . . . . . . . . . . . . . . . .5-20
5.8 The Device Statistics Screen. . . . . . . . . . . . . . . . . . . . . . .5-21
5.8.1 Screen Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-22
5.8.2 REFRESH 3SEC. . . . . . . . . . . . . . . . . . . . . . . . . .5-22
5.8.3 General Counter Fields (Group 1) . . . . . . . . . . . .5-23
5.8.4 Ring Information Fields (Group 2). . . . . . . . . . . .5-23
5.8.5 Isolating Errors Fields (Group 3) . . . . . . . . . . . . .5-25
5.8.6 Non-Isolating Errors (Group 4) . . . . . . . . . . . . . .5-26
5.9 The SNMP Tool Screen . . . . . . . . . . . . . . . . . . . . . . . . . .5-27
5.9.1 Community Name. . . . . . . . . . . . . . . . . . . . . . . . .5-28
5.9.2 OID Prepend . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-28
5.9.3 GET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-28
5.9.4 GETNEXT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-29
5.9.5 STEP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-29
5.9.6 WALK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-30
5.9.7 CYCLES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-30
5.9.8 RECALL-OID. . . . . . . . . . . . . . . . . . . . . . . . . . . .5-30
5.9.9 SET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-30
5.9.10 REPEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-31
5.9.11 Firmware Image Downloads. . . . . . . . . . . . . . . . .5-31
Appendix A TPIM Specifications
A.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A.2 Twisted Pair TPIM Pinouts. . . . . . . . . . . . . . . . . . . . . . . . A-1
A.3 Fiber Optic TPIM Specifications . . . . . . . . . . . . . . . . . . . A-2

CONTENTS
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A.3.1 TPIM-F2 for Multimode Fiber . . . . . . . . . . . . . . . A-3
A.3.2 TPIM-F3 for Single Mode Fiber. . . . . . . . . . . . . . A-4
Appendix B Media Specifications
B.1 Unshielded Twisted Pair (UTP) . . . . . . . . . . . . . . . . . . . . .B-1
B.1.1 UTP Cable Categories. . . . . . . . . . . . . . . . . . . . . . .B-1
B.1.2 UTP Lobe Lengths . . . . . . . . . . . . . . . . . . . . . . . . .B-2
B.2 Shielded Twisted Pair (STP). . . . . . . . . . . . . . . . . . . . . . . .B-3
B.2.1 STP Cable Categories. . . . . . . . . . . . . . . . . . . . . . .B-3
B.2.2 STP Lobe Lengths. . . . . . . . . . . . . . . . . . . . . . . . . .B-4
B.2.3 Mixed STP Cable Types. . . . . . . . . . . . . . . . . . . . .B-4
B.3 Single Mode and Multimode Fiber Optic Cabling . . . . . . .B-5

Page 1-1
CHAPTER 1
Introduction
Welcome to the Cabletron Systems STHI Intelligent Stackable Token
Ring Hub User’s Guide . Please read through this manual to gain an
understanding of the features and capabilities of the STHI. A general
knowledge of IEEE 802.5 Token Ring communications networks and their
physical layer components will be helpful.
1.1 Contents of This Manual
Chapter 1, Introduction , outlines the contents of this manual, describes
STHI features, and offers leads to further information.
Chapter 2, Requirements & Specifications , describes installation
requirements, network guidelines, and STHI operating specifications.
Chapter 3, Installation , contains instructions for installing the STHI and
making network connections.
Chapter 4, Troubleshooting , describes how to use the LANVIEW LED
system to troubleshoot network problems.
Chapter 5, Local Management , describes how to use the Local
Management application.
1.2 STHI Overview
The STHI is an SNMP compliant intelligent hub that provides basic
management functionality including port and station control, statistical
error and trap tracking, and enhanced beacon recovery for a Token Ring
LAN. Its front panel TCU (Trunk Connector Unit) ports allow for network
connections to either active stations or passive Multi-Station Access Units
(MAUs) while its TPIM (Token Ring Port Interface Module) ports allow
for ring expansions across a variety of media. Its rear panel HubSTACK
ports provide for ring expansion through connections to multiple STH
non-intelligent hubs. See Figure 1-1.