Cabletron Systems W85 User manual

HSIM-W85
CPU
LSLSLSLSLSLSLSLS
Title Page
HSIM-W85
User’s Guide
9032842-01

HSIM-W85 User’s Guide 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 FORANY 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.
CAUTION : THE HSIM-W85 IS INTENDED TO BE INSTALLED IN CSA CERTIFIED/UL
LISTED EQUIPMENT BY A QUALIFIED SERVICE PERSON. CHECK THE EQUIPMENT
OPERATION/INSTALLATION INSTRUCTIONSAND/OR EQUIPMENT MANUFACTURER TO
VERIFY/CONFIRMYOUR EQUIPMENT IS SUITABLE FOR INSTALLED APPLICATION
CARDS.
CAUTION : ALWAYS DISCONNECT T1 BOARD (THE ONE WITH THE TELEPHONE PLUG/
JACK) FROM THE TELEPHONE SYSTEM WHEN INSTALLING OR WHEN THE COVERS
ARE REMOVED FROM THE HOST PRODUCT.
CAUTION : APPLY THE ENCLOSED ADHESIVE WARNING LABEL TO THE OUTSIDE OR
INSIDE OF THE EQUIPMENT ENCLOSURE ADJACENT TO THE T1 CARD.
 1999 by Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03866-5005
All Rights Reserved
Printed in the United States of America
Part Number: 9032842-01 March 1999
Cabletron Systems and LANVIEW are registered trademarks of Cabletron Systems, Inc.
All other product names mentioned in this manual may be trademarks or registered trademarks of
their respective companies.
Only qualified personnel should perform installation
procedures.

Notice
ii HSIM-W85 User’s Guide
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.
INDUSTRY CANADA NOTICE
The Industry Canada label identifies certified equipment. This certification means that the equipment
meets certain telecommunications network protective, operational and safety requirements. The
department does not guarantee the equipment will operate to the user’s satisfaction.
Before installing this equipment, users should ensure that it is permissible to be connected to the
facilities of the local telecommunications company. The equipment must also be installed using an
acceptable method of connection. In some cases, the company’s inside wiring associated with a single
line individual service may be extended by means of a certified connector assembly (telephone
extension cord). The customer should be aware that compliance with the above conditions may not
prevent degradation of service in some situations.
Repairs to certified equipment should be made by an authorized Canadian maintenance facility
designated by the supplier. Any repairs or alterations made by the user to this equipment, or
equipment malfunctions, may give the telecommunications company cause to request the user to
disconnect the equipment.
Users should ensure for their own protection that the electrical ground connections of the power
facility, telephone lines and internal metallic water pipe system, if present, are connected together.
This precaution may be particularly important in rural areas.
CAUTION: USERS SHOULD NOT ATTEMPT TO MAKE SUCH CONNECTIONS
THEMSELVES, BUT SHOULD CONTACT THE APPROPRIATE ELECTRIC INSPECTION
AUTHORITY, OR ELECTRICIAN, AS APPROPRIATE.
This digital apparatus does not exceed the ClassA limits for radio noise emissions from digital
apparatus set out in the Radio Interference Regulations of the Industry Canada.
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.

Notice
HSIM-W85 User’s Guide iii
VCCI NOTICE
This is a Class A product based on the standard of the Voluntary Control Council for Interference by
Information Technology Equipment (VCCI). If this equipment is used in a domestic environment,
radio disturbance may arise. When such trouble occurs, the user may be required to take corrective
actions.
CABLETRON SYSTEMS, INC.
PROGRAM LICENSE AGREEMENT
IMPORTANT: THIS LICENSE APPLIES FOR USE OF PRODUCT IN THE UNITED
STATES OF AMERICA AND BY UNITED STATES OF AMERICA
GOVERNMENT END USERS.
BEFORE OPENING OR UTILIZING THE ENCLOSED PRODUCT,
CAREFULLY READ THIS LICENSEAGREEMENT.
This document is an agreement (“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 (“Program”) in the package. The Program may be contained in firmware, chips or other
media. 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. IFYOU DO NOT AGREE
TO THE TERMS OF THIS AGREEMENT, RETURN THE UNOPENED PRODUCT TO
CABLETRON ORYOUR DEALER, IF ANY, WITHIN TEN (10) DAYS FOLLOWING THE DATE
OF RECEIPT FOR A FULL REFUND.
IFYOU HAVEANY QUESTIONSABOUT THISAGREEMENT, CONTACT CABLETRON
SYSTEMS [phone]. Attn: Legal Department.
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.

Notice
iv HSIM-W85 User’s Guide
4. EXPORT REQUIREMENTS. You understand that Cabletron and its Affiliates are subject to
regulation by agencies of the U.S. Government, including the U.S. Department of Commerce, which
prohibit export or diversion of certain technical products to certain countries, unless a license to export
the product is obtained from the U.S. Government or an exception from obtaining such license may be
relied upon by the exporting party.
If the Program is exported from the United States pursuant to the License Exception CIV under
the U.S. Export Administration Regulations,You agree thatYou are a civil end user of the Program
and agree thatYou will use the Program for civil end uses only and not for military purposes.
If the Program is exported from the United States pursuant to the License Exception TSR under
the U.S. Export Administration Regulations, in addition to the restriction on transfer set forth in
Sections 1 or 2 of this Agreement,You agree not to (i) reexport or release the Program, the source
code for the Program or technology to a national of a country in Country Groups D:1 or E:2 (Albania,
Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan,
Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic of China,
Romania, Russia, Rwanda, Tajikistan, Turkmenistan, Ukraine, Uzbekistan, Vietnam, or such other
countries as may be designated by the United States Government), (ii) export to Country Groups D:1
or E:2 (as defined herein) the direct product of the Program or the technology, if such foreign
produced direct product is subject to national security controls as identified on the U.S. Commerce
Control List, or (iii) if the direct product of the technology is a complete plant o r any major
component of a plant, export to Country Groups D:1 or E:2 the direct product of the plant or a major
component thereof, if such foreign produced direct product is subject to national security controls as
identified on the U.S. Commerce Control List or is subject to State Department controls under the
U.S. Munitions List.
5. UNITED STATES GOVERNMENT RESTRICTED RIGHTS. The enclosed Product (i)
was developed solely at private expense; (ii) contains “restricted computer software” submitted with
restricted rights in accordance with section 52.227-19 (a) through (d) of the Commercial Computer
Software-Restricted Rights Clause and its successors, and (iii) in all respects is proprietary data
belongingtoCabletronand/orits suppliers. For Department of Defense units, the Product is considered
commercial computer software in accordance with DFARS section 227.7202-3 and its successors, and
use, duplication, or disclosure by the Government is subject to restrictions set forth herein.
6. 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 MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE ACCOMPANYING
WRITTEN MATERIALS, AND ANY ACCOMPANYING HARDWARE.
7. 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 IN THE DURATION OR LIMITATION OF IMPLIED
WARRANTIES IN SOME INSTANCES, THE ABOVE LIMITATION AND EXCLUSIONS MAY
NOT APPLY TO YOU.

Notice
HSIM-W85 User’s Guide v
CABLETRON SYSTEMS SALES AND SERVICE, INC.
PROGRAM LICENSE AGREEMENT
IMPORTANT: THIS LICENSE APPLIES FOR USE OF PRODUCT IN THE UNITED
STATES OF AMERICA AND BY UNITED STATES OF AMERICA
GOVERNMENT END USERS.
BEFORE OPENING OR UTILIZING THE ENCLOSED PRODUCT,
CAREFULLY READ THIS LICENSEAGREEMENT.
This document is an agreement (“Agreement”) between You, the end user, and Cabletron Systems
Sales and Service, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the
Cabletron software program (“Program”) in the package. The Program may be contained in firmware,
chips or other media. UTILIZING THE ENCLOSED PRODUCT,YOU ARE AGREEING TO
BECOME BOUND BY THE TERMS OF THISAGREEMENT, WHICH INCLUDES THE
LICENSE AND THE LIMITATION OF WARRANTY AND DISCLAIMER OF LIABILITY. IF
YOU DO NOTAGREE TO THE TERMS OF THIS AGREEMENT, RETURN THE UNOPENED
PRODUCT TO CABLETRON ORYOUR DEALER, IF ANY, WITHIN TEN (10) DAYS
FOLLOWING THE DATE OF RECEIPT FOR A FULL REFUND.
IFYOU HAVEANY QUESTIONSABOUT THISAGREEMENT, CONTACT CABLETRON
SYSTEMS [phone]. Attn: Legal Department.
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.
4. EXPORT REQUIREMENTS. You understand that Cabletron and its Affiliates are subject to
regulation by agencies of the U.S. Government, including the U.S. Department of Commerce, which
prohibit export or diversion of certain technical products to certain countries, unless a license to export
the product is obtained from the U.S. Government or an exception from obtaining such license may be
relied upon by the exporting party.
If the Program is exported from the United States pursuant to the License Exception CIV under
the U.S. Export Administration Regulations,You agree thatYou are a civil end user of the Program
and agree thatYou will use the Program for civil end uses only and not for military purposes.
If the Program is exported from the United States pursuant to the License Exception TSR under
the U.S. Export Administration Regulations, in addition to the restriction on transfer set forth in
Sections 1 or 2 of this Agreement,You agree not to (i) reexport or release the Program, the source
code for the Program or technology to a national of a country in Country Groups D:1 or E:2 (Albania,
Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan,
Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic of China,
Romania, Russia, Rwanda, Tajikistan, Turkmenistan, Ukraine, Uzbekistan, Vietnam, or such other
countries as may be designated by the United States Government), (ii) export to Country Groups D:1
or E:2 (as defined herein) the direct product of the Program or the technology, if such foreign
produced direct product is subject to national security controls as identified on the U.S. Commerce
Control List, or (iii) if the direct product of the technology is a complete plant o r any major

Notice
vi HSIM-W85 User’s Guide
component of a plant, export to Country Groups D:1 or E:2 the direct product of the plant or a major
component thereof, if such foreign produced direct product is subject to national security controls as
identified on the U.S. Commerce Control List or is subject to State Department controls under the
U.S. Munitions List.
5. UNITED STATES GOVERNMENT RESTRICTED RIGHTS. The enclosed Product (i)
was developed solely at private expense; (ii) contains “restricted computer software” submitted with
restricted rights in accordance with section 52.227-19 (a) through (d) of the Commercial Computer
Software-Restricted Rights Clause and its successors, and (iii) in all respects is proprietary data
belongingtoCabletronand/orits suppliers. For Department of Defense units, the Product is considered
commercial computer software in accordance with DFARS section 227.7202-3 and its successors, and
use, duplication, or disclosure by the Government is subject to restrictions set forth herein.
6. 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 MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE ACCOMPANYING
WRITTEN MATERIALS, AND ANY ACCOMPANYING HARDWARE.
7. 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 IN THE DURATION OR LIMITATION OF IMPLIED
WARRANTIES IN SOME INSTANCES, THE ABOVE LIMITATION AND EXCLUSIONS MAY
NOT APPLY TO YOU.
CABLETRON SYSTEMS LIMITED
PROGRAM LICENSE AGREEMENT
IMPORTANT: THIS LICENSE APPLIES FOR USE OF PRODUCT IN THE UNITED
STATES OF AMERICA AND BY UNITED STATES OF AMERICA
GOVERNMENT END USERS.
BEFORE OPENING OR UTILIZING THE ENCLOSED PRODUCT,
CAREFULLY READ THIS LICENSEAGREEMENT.
This document is an agreement (“Agreement”) between You, the end user, and Cabletron Systems
Limited (“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron
software program (“Program”) in the package. The Program may be contained in firmware, chips or
other media. 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. IFYOU DO NOT
AGREE TO THE TERMS OF THIS AGREEMENT, RETURN THE UNOPENED PRODUCT TO
CABLETRON ORYOUR DEALER, IF ANY, WITHIN TEN (10) DAYS FOLLOWING THE DATE
OF RECEIPT FOR A FULL REFUND.

Notice
HSIM-W85 User’s Guide vii
IFYOU HAVEANY QUESTIONSABOUT THISAGREEMENT, CONTACT CABLETRON
SYSTEMS [phone]. Attn: Legal Department.
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 governed in accordance with English
law. The English courts shall have exclusive jurisdiction in the event of any disputes.
4. EXPORT REQUIREMENTS. You understand that Cabletron and its Affiliates are subject to
regulation by agencies of the U.S. Government, including the U.S. Department of Commerce, which
prohibit export or diversion of certain technical products to certain countries, unless a license to export
the product is obtained from the U.S. Government or an exception from obtaining such license may be
relied upon by the exporting party.
If the Program is exported from the United States pursuant to the License Exception CIV under
the U.S. Export Administration Regulations,You agree thatYou are a civil end user of the Program
and agree thatYou will use the Program for civil end uses only and not for military purposes.
If the Program is exported from the United States pursuant to the License Exception TSR under
the U.S. Export Administration Regulations, in addition to the restriction on transfer set forth in
Sections 1 or 2 of this Agreement,You agree not to (i) reexport or release the Program, the source
code for the Program or technology to a national of a country in Country Groups D:1 or E:2 (Albania,
Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan,
Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic of China,
Romania, Russia, Rwanda, Tajikistan, Turkmenistan, Ukraine, Uzbekistan, Vietnam, or such other
countries as may be designated by the United States Government), (ii) export to Country Groups D:1
or E:2 (as defined herein) the direct product of the Program or the technology, if such foreign
produced direct product is subject to national security controls as identified on the U.S. Commerce
Control List, or (iii) if the direct product of the technology is a complete plant o r any major
component of a plant, export to Country Groups D:1 or E:2 the direct product of the plant or a major
component thereof, if such foreign produced direct product is subject to national security controls as
identified on the U.S. Commerce Control List or is subject to State Department controls under the
U.S. Munitions List.
5. UNITED STATES GOVERNMENT RESTRICTED RIGHTS. The enclosed Product (i)
was developed solely at private expense; (ii) contains “restricted computer software” submitted with
restricted rights in accordance with section 52.227-19 (a) through (d) of the Commercial Computer
Software-Restricted Rights Clause and its successors, and (iii) in all respects is proprietary data
belongingtoCabletronand/orits suppliers. For Department of Defense units, the Product is considered
commercial computer software in accordance with DFARS section 227.7202-3 and its successors, and
use, duplication, or disclosure by the Government is subject to restrictions set forth herein.

Notice
viii HSIM-W85 User’s Guide
6. 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 MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE ACCOMPANYING
WRITTEN MATERIALS, AND ANY ACCOMPANYING HARDWARE.
7. 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 IN THE DURATION OR LIMITATION OF IMPLIED
WARRANTIES IN SOME INSTANCES, THE ABOVE LIMITATION AND EXCLUSIONS MAY
NOT APPLY TO YOU.

HSIM-W85 User’s Guide ix
CONTENTS
CHAPTER 1 INTRODUCTION
1.1 Firmware Revision.......................................................................1-1
1.2 Using This Manual.......................................................................1-2
1.3 Overview......................................................................................1-3
1.4 Data Flow in the HSIM-W85........................................................1-4
1.5 Features ......................................................................................1-4
1.5.1 Connectivity ....................................................................1-5
1.5.2 HDLC..............................................................................1-5
1.5.3 Inverse Multiplexing (IMUX)............................................1-6
1.5.4 Priority Queuing..............................................................1-6
1.5.5 DS1 Alarm ......................................................................1-7
1.5.6 SNMP and MIB Support .................................................1-7
1.5.7 LANVIEW Diagnostic LEDs............................................1-7
1.6 Document Conventions...............................................................1-8
1.7 Related Documentation...............................................................1-9
1.8 Getting Help...............................................................................1-10
CHAPTER 2 INSTALLATION
2.1 Unpacking the HSIM-W85...........................................................2-1
2.2 Installing the HSIM-W85..............................................................2-2
2.2.1 Installing the HSIM-W85 in an Interface Module ............2-2
2.2.2 Installing the HSIM-W85 in a Standalone Device...........2-5
2.3 Connecting the HSIM-W85 to the Network..................................2-6
CHAPTER 3 LANVIEW LEDs
3.1 LANVIEW LEDs...........................................................................3-1
CHAPTER 4 MANAGEMENT
4.1 Local Management......................................................................4-1
4.2 Network Tools..............................................................................4-3
4.2.1 Commands .....................................................................4-4
4.2.2 Built-in Commands .........................................................4-7
4.2.3 Special Commands.......................................................4-14
4.3 Sample IMUX Configuration......................................................4-15

Contents
x HSIM-W85 User’s Guide
CHAPTER 5 TROUBLESHOOTING
5.1 Troubleshooting the HSIM-W85..................................................5–1
5.1.1 Hardware Troubleshooting.............................................5–1
5.1.2 Investigating Software Configuration Problems .............5–3
5.1.3 Problems with the Firmware Image................................5–3
APPENDIX A SPECIFICATIONS
A.1 Physical Properties ..................................................................... A-1
A.2 Environmental Requirements...................................................... A-2
A.3 Regulatory Compliance............................................................... A-2
APPENDIX B TYPICAL CONFIGURATION
APPENDIX C FCC PART 68 - USER’S INFORMATION

HSIM-W85 User’s Guide 1-1
CHAPTER 1
INTRODUCTION
Welcome to the Cabletron Systems HSIM-W85 User’s Guide . This
manual describes the HSIM-W85 and provides information concerning
features, installation, the use of management, troubleshooting, and
specifications.
A general working knowledge of Wide Area Networking (WAN),
including T1 Networking, Ethernet and data communications networks,
and their physical layer components is helpful when installing this device.
The HSIM-W85 has 8 RJ45 T1 ports. Figure 1-1 shows the HSIM-W85.
Figure 1-1 HSIM-W85
1.1 FIRMWARE REVISION
This manual covers Firmware Revision level 04.08.XX. Later revisions
may be reflected in an updated manual. Please verify the revision level of
your device, to ensure that this manual meets your needs.
Important Notice
Depending on the firmware version used in the HSIM-W85, some
features described in this document may not be supported. Refer to the
Release Notes shipped with the HSIM-W85 to determine which features
are supported.
HSIM-W85
CPU
LSLSLSLSLSLSLSLS

Chapter 1: Introduction
1-2 HSIM-W85 User’s Guide
1.2 USINGTHIS MANUAL
Reading through this manual completely will help you understand the
features and capabilities of the HSIM-W85. The following list provides
an overview of each section of this manual:
Chapter 1, Introduction , outlines the contents of this manual, describes
the HSIM-W85 features and provides information on how to obtain
related manuals and technical support.
Chapter 2, Installation , describes how to install an HSIM-W85 into an
interface module or a standalone device (host platform).
Chapter 3, LANVIEW LEDs , describes how to use the HSIM-W85
LEDs to monitor performance and status.
Chapter 4, Management , describes the Network Tools needed for
configuration of the HSIM-W85.
Chapter 5, Troubleshooting , describes some of the common
troubleshooting problems and possible solutions.
Appendix A, Specifications , lists the operating specifications and
regulatory compliance of the HSIM-W85.
Appendix B, Typical Configuration , displays possible configurations for
the HSIM-W85.
Appendix C, FCC PART 68 - User’s Information, explains the FCC rules
for the HSIM-W85.
NOTE
The term “host platform” is used to describe the interface
module, or standalone device, into which the HSIM-W85 can
be installed.

Overview
HSIM-W85 User’s Guide 1-3
1.3 OVERVIEW
The HSIM-W85 extends the functionality of certain Cabletron Systems
platforms by providing an interface for Wide Area Network (WAN) DS1
services. The HSIM-W85 is a High Speed Interface Module (HSIM) used
to provide WAN services using the SmartSwitch series of products as a
platform. The HSIM-W85 has 8 physical DS1 interfaces, providing 8
separate logical DS1 connections. Eight separate T1 circuits can be
configured, or the circuits can be combined into various Inverse
Multiplexing (IMUX) groupings, up to a 12 Mbps full duplex data circuit
within a Layer 2 IMUX group.
The typical configuration is a head-end WAN aggregation point for up to
8 T1s into a single WAN physical interface. The HSIM-W85 is able to
uplink any combination of single T1s or multiple T1 IMUX groups to the
backbone. Refer to Appendix B for a diagram of a typical configuration.
The HSIM-W85 has its own i960 HD microprocessor used to process data
packets, provide simple configuration, Inverse Multiplexer functionality,
and statistics processing. The SmartSwitch host platform provides the
required logical IP Host services. The HSIM-W85 is designed to be
installed in any Cabletron Systems product that supports the High Speed
Interface Module.
The HSIM-W85 operates in two modes:
• Switching
• IMUX
The first mode, switching, is the default mode. The HSIM-W85 forwards
data packets received by the host platform out through the logical DS1
interfaces. It also forwards packets received in the DS1 interfaces to or
through the host. The default and only layer 2 WAN protocol used with
the HSIM-W85 is raw HDLC.
NOTE
The host platform may operate in 802.1D bridging, 802.1Q
VLAN, or SecureFast mode.

Chapter 1: Introduction
1-4 HSIM-W85 User’s Guide
The second mode of operation is using Cabletron Systems Inverse
Multiplexer (IMUX) functionality to aggregate multiple DS1 connections
into single higher bandwidth WAN connections. To operate in this mode,
the user configures the appropriate IMUX groups containing the DS1
connections.
Along with the built-in management features (Network Tools) described
in Chapter 4, the HSIM-W85 can be managed using SNMP. Statistical
data can be accessed via SNMP by referencing the interface group defined
in RFC 1213.
1.4 DATA FLOW IN THE HSIM-W85
The T1 data streams are terminated by T1 framers, which provide an
HDLC bit stream to the HDLC controller. The controller receives data
packets from each of the bit streams and places them in a memory
subsystem. The on board CPU examines the packet and notifies the host
of its arrival. Finally, a Cabletron proprietary ASIC transfers the data to
the host platform.
This process is followed in reverse when a packet is transmitted from the
host platform out the T1 ports. The host platform notifies the HSIM-W85
when a packet is coming and transfers the packet to the memory. The
HDLC format is applied to the data, then the data is framed to a T1
format, and passed to the framer. The T1 data is transmitted out through
the T1 interface.
1.5 FEATURES
The following are some of the highlights of the HSIM-W85 features:
• Data Transfer Rates of 12 Mbps in full duplex, when running all eight
T1s carrying continuous data traffic of 64-byte packets or larger.
• High-level Data Link Control (HDLC) protocol
• T1 Inverse Multiplexing (IMUX)
• WAN IP Priority Queuing functionality
• DS1 Alarm Thresholds
• SNMP support

Features
HSIM-W85 User’s Guide 1-5
• DS1 MIB Support
• LANVIEW LEDs
1.5.1 Connectivity
The HSIM-W85 module supports WAN technology using eight live full
duplex T1 connections.
The primary function of the HSIM-W85 is to provide LAN-to-WAN
access. WAN physical connectivity will be supported through the use of a
T1 interface. LAN-to-WAN connectivity will be supported through
HDLC and T1 Inverse Multiplexing (IMUX).
The HSIM-W85 interoperates with those Cabletron Systems WAN
products that support raw HDLC as the WAN protocol. This support is
limited to the CyberSWITCH product line which supports HDLC:
• CSX400 – Version 02.00.15 or higher
• HSIM-W6 – Version 02.00.15 or higher
• HSIM-W84 – Version 02.00.xx or higher
• HSIM-W87 – SSR 2200 Version 04.05.06 or higher
1.5.2 HDLC
The High-level Data Link Control (HDLC) protocol is used in
conjunction with the Inverse Multiplexing (IMUX) feature to conserve a
user’s WAN bandwidth between two Cabletron Systems products, over a
point-to-point connection. Cabletron Systems products such as the
HSIM-W6, HSIM-W84, HSIM-W85, HSIM-W87, and CSX400 must be
in use on both ends of the WAN link for these functions to work. The
HDLC (RAW) protocol reduces the amount of overhead information that
needs to be contained within each data packet to direct it to its destination.
This decreased packet overhead provides the IMUX functions with more
bandwidth to transfer user data.

Chapter 1: Introduction
1-6 HSIM-W85 User’s Guide
1.5.3 Inverse Multiplexing (IMUX)
Cabletron Systems Inverse Multiplexing (IMUX) feature provides
enhanced throughput for users by following this process:
• The IMUX function evenly distributes a data packet stream from the
LAN interface through multiple full T1 WAN interfaces on the
HSIM-W85.
• Data packet streams received by the WAN interfaces on the other end
of theWAN links are then recombined, ordered, and transmitted to the
LAN interface.
The IMUX function is configured using the Network Tools command,
imux, described in Chapter 4.
1.5.4 Priority Queuing
WAN IP Priority Queuing is used to prioritize IP packets from a specified
IP address. This prioritizing ensures that certain packets get through the
network, such as management packets which are necessary to the
operation of the network. It also ensures that routers that depend on
protocols with tight timing, such as RIP, do not time out. The prioritized
packets do not eliminate other traffic on the network, but are held in a
special queue, so that they are not discarded during oversubscribed traffic
peaks. Priority Queuing can be enabled in management, using Network
Tools. Refer to the wanpq command in the Management chapter.
NOTE
Cabletron Systems products that support Inverse Multiplexing
(IMUX), such as the HSIM-W6, CSX400, HSIM-W84,
HSIM-W85, and HSIM-W87, must exist on both ends of the
WAN link for the IMUX function to work.All bridging and
switching functions, such as 802.1D, SecureFast VLAN, and
802.1Q are able to run as normal on the host platform when
using the IMUX function on the HSIM-W85.

Features
HSIM-W85 User’s Guide 1-7
1.5.5 DS1 Alarm
The DS1 Error Threshold Alarm Monitor allows the user to set error
thresholds. The monitor notifies the user of potential DS1 problems with
SNMP trap events.
The ds1alarm Monitor feature can be enabled in management, using
Network Tools. Refer to the ds1alarm command in the Management
chapter.
1.5.6 SNMP and MIB Support
With SNMP support, the MIBs supported by the HSIM-W85 include:
• RFC 1406 – Definitions of Managed Objects for the DS1 and E1
Interface Types
• RFC 1213 (MIB II) support for the Interface Table
• Cabletron Enterprise MIBs
• RFC 2233 – Support for the Interface Stack Table
Refer to the Release Notes included with the host platform for a list of all
MIBs supported by the HSIM-W85. For information about how to extract
and compile individual MIBs, contact Cabletron Systems (Section 1.8).
1.5.7 LANVIEW Diagnostic LEDs
Cabletron Systems provides a visual diagnostic and monitoring system
called LANVIEW. The HSIM-W85 LANVIEW LEDs help you quickly
identify status of the device. Chapter 3 provides information on the
HSIM-W85 LEDs. The host platform LEDs may also indicate
information for the HSIM-W85. Refer to the appropriate host platform
manual for further information on the host platform LEDs.

Chapter 1: Introduction
1-8 HSIM-W85 User’s Guide
1.6 DOCUMENT CONVENTIONS
The following conventions are used throughout this document:
NOTE
Note symbol. Calls the reader’s attention to any item of
information that may be of special importance.
!
CAUTION
Caution symbol. Contains information essential to avoid
damage to the equipment.
Electrical Hazard Warning symbol.Warns against an action
that could result in personal injury or death due to an electrical
hazard.
TIP Tip symbol. Conveys helpful hints concerning procedures or
actions.
bold type Denotes either a user input or a highlighted screen selection.
RETURN Indicates either the ENTER or RETURN key, depending on your
keyboard.
ESC Indicates the keyboard Escape key.
SPACE bar Indicates the keyboard space bar key.
BACKSPACE Indicates the keyboard backspace key.
arrow keys Refers to the four keyboard arrow keys.
[-] Indicates the keyboard – key.
DEL Indicates the keyboard delete key.
italic type Italic type emphasizes important information, indicates variables,
and indicates complete document titles.
n.nn A period in numerals signals the decimal point indicator (e.g.,
1.75 equals one and three fourths), or the Decimal Dotted
Notation (DDN) for an IP address.
xIndicates the generic use of a letter (e.g., xxx indicates any
combination of three alphabetic characters).