Cabletron Systems 2H253-25R User Manual

2H253-25R

SmartSwitch 2200

Installation User’s Guide

FAST ETHERNET WORKGROUP SWITCH

2H253-25R

LED MODE

RX-TX

DPX-SPD

RESET

COM

1234567891011

PWR CPU

131413

16

17181920212223

15

12

24

9034006

Only qualiﬁed personnel should perform installation procedures.

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.



Order Number: 9034006

Cabletron Systems, LANVIEW, QuickSET

of Cabletron Systems, Inc. All other product names mentioned in this manual may be trademarks or registered trademarks of their respective

companies.

January

2000

, and

ecureFast

S

are registered trademarks and

SmartSwitch

is a trademark

i

FCC NOTICE

This device complies with Part 15 of the FCC rules. Operation is subject to the following tw o conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference receiv ed, including interference that may cause undesired operation.

NOTE:

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:

compliance could void the user’s authority to operate the equipment.

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to

Changes or modiﬁcations made to this device which are not expressly approved by the party responsible for

INDUSTRY CANADA 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.

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.

ii

CABLETRON SYSTEMS, INC.

PROGRAM LICENSE AGREEMENT

IMPORTANT: THIS LICENSE APPLIES FOR USE OF PRODUCT IN THE FOLLOWING

GEOGRAPHICAL REGIONS: CANADA

MEXICO CENTRAL AMERICA SOUTH AMERICA

BEFORE OPENING OR UTILIZING THE ENCLOSED PRODUCT, CAREFULLY READ THIS LICENSE AGREEMENT.

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. IF YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT, RETURN THE UNOPENED PRODUCT TO CABLETRON OR YOUR DEALER, IF ANY, WITHIN TEN (10) DAYS FOLLOWING THE DATE OF RECEIPT FOR A FULL REFUND.

IF YOU HAVE ANY QUESTIONS ABOUT THIS AGREEMENT, CONTACT CABLETRON SYSTEMS +1- 603-332-9400. Attn: Legal Department.

1. LICENSE.

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.

3. APPLICABLE LAW.

and federal courts of New Hampshire. You accept the personal jurisdiction and venue of the New Hampshire courts.

4. EXPORT REQUIREMENTS.

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 that You are a civil end user of the Program and agree that You will use the Program for civil end uses only and not for military purposes.

You have the right to use only the one (1) copy of the Program provided in this package subject to the

You may not reverse engineer, decompile, or disassemble the Program.

This License Agreement shall be interpreted and governed under the laws and in the state

You understand that Cabletron and its Affiliates are subject to regulation by

iii

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.

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 belonging to Cabletron and/or its 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.

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 ACCOMP ANYING WRITTEN MATERIALS, AND ANY A CCOMPANYING HARDWARE.

7. NO LIABILITY FOR CONSEQUENTIAL DAMAGES.

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.

Except as may be specifically provided by Cabletron in writing, Cabletron

The enclosed Product (i) was developed solely

IN NO EVENT SHALL CABLETRON OR ITS

iv

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 LICENSE AGREEMENT.

This document is an agreement (“ Agreement”) between Y ou, 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 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, RETURN THE UNOPENED PRODUCT TO CABLETRON OR YOUR DEALER, IF ANY, WITHIN TEN (10) DAYS FOLLOWING THE DATE OF RECEIPT FOR A FULL REFUND.

IF YOU HAVE ANY QUESTIONS ABOUT THIS AGREEMENT, CONTACT CABLETRON SYSTEMS +1- 603-332-9400. Attn: Legal Department.

1. LICENSE.

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.

3. APPLICABLE LAW.

and federal courts of New Hampshire. You accept the personal jurisdiction and venue of the New Hampshire courts.

4. EXPORT REQUIREMENTS.

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 that You are a civil end user of the Program and agree that You 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.

You have the right to use only the one (1) copy of the Program provided in this package subject to the

You may not reverse engineer, decompile, or disassemble the Program.

This License Agreement shall be interpreted and governed under the laws and in the state

You understand that Cabletron and its Affiliates are subject to regulation by

v

5. UNITED STATES GOVERNMENT RESTRICTED RIGHTS.

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 belonging to Cabletron and/or its 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.

The enclosed Product (i) was developed solely

6. EXCLUSION OF WARRANTY.

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 ACCOMP ANYING WRITTEN MATERIALS, AND ANY A CCOMPANYING HARDWARE.

7. NO LIABILITY FOR CONSEQUENTIAL DAMAGES.

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.

Except as may be specifically provided by Cabletron in writing, Cabletron

IN NO EVENT SHALL CABLETRON OR ITS

vi

CABLETRON SYSTEMS LIMITED

PROGRAM LICENSE AGREEMENT

IMPORTANT: THIS LICENSE APPLIES FOR THE USE OF THE PRODUCT IN THE FOLLOWING

GEOGRAPHICAL REGIONS:

EUROPE MIDDLE EAST AFRICA ASIA AUSTRALIA PACIFIC RIM

BEFORE OPENING OR UTILIZING THE ENCLOSED PRODUCT, CAREFULLY READ THIS LICENSE AGREEMENT.

This document is an agreement (“ Agreement”) between Y ou, 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. IF YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT, RETURN THE UNOPENED PRODUCT TO CABLETRON OR YOUR DEALER, IF ANY, WITHIN TEN (10) DAYS FOLLOWING THE DATE OF RECEIPT FOR A FULL REFUND.

IF YOU HAVE ANY QUESTIONS ABOUT THIS AGREEMENT, CONTACT CABLETRON SYSTEMS +1- 603-332-9400. Attn: Legal Department.

1. LICENSE.

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.

3. APPLICABLE LAW.

courts shall have exclusive jurisdiction in the event of any disputes.

4. EXPORT REQUIREMENTS.

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 that You are a civil end user of the Program and agree that You will use the Program for civil end uses only and not for military purposes.

You have the right to use only the one (1) copy of the Program provided in this package subject to the

You may not reverse engineer, decompile, or disassemble the Program.

This License Agreement shall be governed in accordance with English law. The English

You understand that Cabletron and its Affiliates are subject to regulation by

vii

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.

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 belonging to Cabletron and/or its 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.

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 ACCOMP ANYING WRITTEN MATERIALS, AND ANY A CCOMPANYING 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.

Except as may be specifically provided by Cabletron in writing, Cabletron

The enclosed Product (i) was developed solely

viii

DECLARATION OF CONFORMITY

Application of Council Directive(s):

89/336/EEC 73/23/EEC

Manufacturer’s Name:

Manufacturer’s Address:

Cabletron Systems, Inc.

35 Industrial Way PO Box 5005

Rochester, NH 03867

European Representative Name:

European Representative Address:

Mr. J. Solari

Cabletron Systems Limited Nexus House, Newbury Business Park London Road, Newbury

Berkshire RG14 2PZ, England

Conformance to Directive(s)/Product Standards:

EC Directive 89/336/EEC EC Directive 73/23/EEC EN 55022 EN 50082-1

EN 60950

Equipment Type/Environment:

Networking Equipment, for use in a Commercial or Light Industrial Environment.

We the undersigned, hereby declare, under our sole responsibility, that the equipment packaged with this notice conforms to the above directives.

Manufacturer Legal Representative in Europe

Mr. Ronald Fotino Mr. J. Solari

___________________________________ ___________________________________

Full Name Full Name

Compliance Engineering Manager Managing Director - E.M.E.A.

___________________________________ ___________________________________

Title Title

Rochester, NH, USA Newbury, Berkshire, England

___________________________________ ___________________________________

Location Location

ix

x

Figures

Figure Page

1-1 The 2H253-25R SmartSwitch 2200.................................................................................1-1

3-1 Tabletop or Shelf Installation...........................................................................................3-4

3-2 Attaching the Strain-Relief Bracket .................................................................................3-5

3-3 Attaching the Rackmount Brackets .................................................................................3-6

3-4 Installing the Device in a Rack ........................................................................................3-6

3-5 2H253-25R Rear View ....................................................................................................3-7

3-6 Straight Cable Connection ..............................................................................................3-9

4-1 LANVIEW LEDs ..............................................................................................................4-1

4-2 RESET Button.................................................................................................................4-8

B-1 Removing the Chassis Cover..........................................................................................B-4

B-2 Mode Switch Location.....................................................................................................B-5

B-3 SIMM Slot Locations.......................................................................................................B-7

B-4 Installing the DRAM.........................................................................................................B-8

B-5 HSIM and VHSIM Connector Locations..........................................................................B-9

xiii

Tables

Table Page

3-1 Contents of 2H253-25R Carton........................................................................................3-2

4-1 LANVIEW LEDs ..............................................................................................................4-2

4-2 Troubleshooting Checklist ...............................................................................................4-5

A-1 COM Port Pin Assignments............................................................................................ A-3

xiv

About This Guide

Welcome to the the 2H253-25R SmartSwitch 2200 device and provides information concerning network requirements, installation, and troubleshooting. For information about how to use Local Management to conﬁgure and manage the 2H253-25R, refer to the Cabletron Systems

SmartSwitch Series 2E253, 2H252, 2H253 and 2H258 Local Management User’s Guide

2H253-25R SmartSwitch 2200 Installation User’s Guide.

This guide describes

.

Important Notice

Depending on the ﬁrmware version used in the 2H253-25R, some features described in this document may not be supported. Refer to the Release Notes shipped with the 2H253-25R to determine which features are supported.

USING THIS GUIDE

Read through this guide and the

Management User’s Guide

Management functions. A general working knowledge of Ethernet and IEEE 802.3 type data communications networks

and their physical layer components is helpful when using this device.

In this document, the device is referred to as either the “2H253-25R” or the “device”.

NOTE

SmartSwitch Series 2E253, 2H252, 2H253 and 2H258 Local

to completely understand the 2H253-25R capabilities and Local

STRUCTURE OF THIS GUIDE

This guide is organized as follows:

Chapter 1,

obtaining additional information or help from Cabletron Systems are also included in this chapter.

Chapter 2,

installing the 2H253-25R.

Chapter 3,

segments to the device.

Introduction

Network Requirements

Installation

, provides an overview of the 2H253-25R and its features. Directions for

, provides instructions on how to install the 2H253-25R and connect

, explains the network requirements to consider before

xv

Document Conventions

The HSIM-W6 Installation Guide, the HSIM-W84 Installation Guide, and the WAN Series Local

Management User’s Guide

are included on the QuickSET CD-ROM and, along with the other manuals listed above, can be obtained from the World Wide Web in Adobe Acrobat Portable Document Format (PDF) at the following site:

http://www.cabletron.com/

NOTE

All documentation for the Cabletron Systems SecureFast VLAN Manager software is contained on the VLAN Manager CD-ROM.

DOCUMENT CONVENTIONS

The guide uses the following conventions:

NOTE

TIP

CAUTION

Note symbol. Calls the reader’s attention to any item of information that may be of

special importance.

Tip symbol. Conveys helpful hints concerning procedures or actions.

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.

WARNING

Warning symbol. Warns against an action that could result in personal injury or death.

xvii

1

Introduction

This chapter introduces the 2H253-25R SmartSwitch 2200 device and provides information about how to obtain additional support from Cabletron Systems.

Important Notice

Depending on the ﬁrmware version used in the 2H253-25R, some features described in this document may not be supported. Refer to the Release Notes shipped with the 2H253-25R to determine which features are supported.

1.1 OVERVIEW

The 2H253-25R (Figure 1-1) is an Ethernet/Fast Ethernet standalone device with two RJ21 front panel connectors (each containing 12 switched ports), and 1 slot for an optional High Speed Interface Module (HSIM) or Very High Speed Interface Module (VHSIM).

LED MODE Switch

FAST ETHERNET WORKGROUP SWITCH

2H253-25R

Reset Button

RESET

COM

COM Port

LED MODE

RX-TX

DPX-SPD

PWR CPU

System LEDs

Port Status

HSIM/VHSIM Slot

LEDs

1234567891011

131413

16 15

17181920212223

12

24

Network Ports 1-24 (Two RJ21 connectors)

Figure 1-1 The 2H253-25R SmartSwitch 2200

27621-01

Introduction 1-1

Overview

The 2H253-25R is used to connect individual high-bandwidth user devices, such as workstations, or to provide a central switching point for multiple 10/100 Mbps Fast Ethernet segments. The optional HSIMs provide high speed uplinks to networking technologies such as Fast Ethernet, Gigabit Ethernet, Fiber Distributed Data Interface (FDDI), Wide Area Network (WAN), and Asynchronous Transfer Mode (ATM). Some HSIMs can provide additional Fast Ethernet ports in varying media types. The optional VHSIMs provide very high speed uplinks to networking technologies such as Gigabit Ethernet and ATM.

The 2H253-25R ports can be conﬁgured to control frame trafﬁc in several ways, including prioritizing trafﬁc ﬂow according to protocol type. The 2H253-25R can also be conﬁgured to establish Virtual Local Area Networks (VLANs) and control the ﬂow of frames associated with each VLAN according to priority and Ether type. Detailed information about VLANs is provided in the Cabletron Systems 802.1Q VLAN User’s Guide.

The 2H253-25R may be used as a tabletop unit or can be installed in a standard 19-inch rack using the supplied rack mounting hardware.

The 2H253-25R has two power supplies. The po wer supplies load share 50% (+/-5%) of the po wer required by the device. If one power supply fails, the remaining power supply assumes the entire load of the device without interruption to network trafﬁc. Each power supply module supports its own ac input connection, which enables each power supply to be connected to a dif ferent ac po wer circuit.

1.1.1 Connectivity

The 2H253-25R connects to Ethernet networks or workstations through two RJ21 ports on the front panel. Each RJ21 connector contains 12, 10/100 Mbps Ethernet ports. These ports are IEEE

802.3 10BASE-T and IEEE 802.3u 100BASE-TX compliant, and they support Category 3 (10-Mbps operation only) and Category 5 Unshielded Twisted Pair cabling. The Category 5 cabling must have an impedance of between 85 and 111 ohms at lengths up to 100 meters.

The device also has a slot for an optional HSIM or VHSIM to provide additional connectivity to various networking technologies.

1.1.2 Auto-Negotiation

The ﬁxed twisted pair ports (1 through 24) on the 2H253-25R have the ability to auto-ne gotiate the type of connection required to provide a link to another device. During Auto-Negotiation, two devices automatically exchange information so they know each others operating capabilities. The Auto-Negotiation feature targets the maximum capabilities that can be reached between the two devices. For example, the 2H253-25R can adjust to 100 Mbps when the device on the other end of the connection can also adjust from 10 Mbps to 100 Mbps. If the device on the other end of the connection can only operate at 10 Mbps, then the 2H253-25R simply adjusts to operate at 10 Mbps.

1-2 Introduction

Overview

When Auto-Negotiation is supported at both ends of a link, the two devices dynamically adjust to full or half duplex operation based on the maximum capability that can be reached between the two devices. If the device connected to the 2H253-25R cannot auto-negotiate, the 2H253-25R operates according to the capabilities of the other device.

1.1.3 Runtime IP Address Discovery

This feature enables the 2H253-25R device to automatically accept an IP address from a Boot Strap Protocol (BootP) server on the network without requiring a user to enter an IP address through Local Management.

When the device is connected to the network and powered up, Runtime IP Address Discovery (RAD) checks the device for an IP address. If one has not yet been assigned (device IP address set to 0.0.0.0), RAD checks to see if any of the device interfaces have a link. If so, RAD sends out Reverse Address Resolution Protocol (RARP) and BootP requests to obtain an IP address from a BootP server on the network.

The RAD requests start at an interval of 1 per second. The interval then doubles after every transmission until an interval of 300 seconds is reached. At this point, the interval remains at 300 seconds. The RAD requests continue until an IP address is received from a RARP or BootP serv er, or an IP address is entered using Local Management.

NOTE

The 2H253-25R will reboot after RAD is successful.

1.1.4 Full Duplex Switched Ethernet

Each switched Fast Ethernet port on the 2H253-25R supports 10/100 Mbps operation, and can operate in Full Duplex Switched Ethernet (FDSE) mode. FDSE enables each port to provide up to 200 Mbps of bandwidth to connected devices that support FDSE.

1.1.5 SmartTrunk

Traditional 802.1D Spanning Tree Bridges only allow one active data path between any two switches; all other parallel data paths are in Standby or Blocking mode. If one interface or path should fail, then the other interface automatically comes out of Blocking mode and forwards all of the trafﬁc. This is ﬁne for redundancy purposes. However, it is not the most efﬁcient use of resources.

Introduction 1-3

Overview

SmartTrunk, also referred to as SmartTrunking, is Cabletron Systems’ terminology for load balancing or load sharing. SmartTrunk provides the ability to take full advantage of the network’s redundant bandwidth. SmartTrunk divides network trafﬁc across multiple ports in parallel to provide additional throughput. The SmartTrunk application can be used with any of Cabletron Systems’ switch modules (except ATM modules).

For more information about SmartTrunk and how to conﬁgure it the SmartSwitch device, refer to the Cabletron Systems SmartTrunk User’s Guide.

1.1.6 Remote Monitoring (RMON)

The 2H253-25R supports all nine Ethernet RMON groups. The Statistics, Alarms, Events and History groups are enabled on all ports by default.

Cabletron Systems RMON Actions is a vendor-speciﬁc extension of RMON and provides the ability to set an “Action” on any SNMP MIB variable. The Action can be triggered by an y RMON Event and/or Alarm. An example of an Action would be to turn of f a MIB-2 interface if a broadcast threshold is crossed.

1.1.7 Broadcast Suppression

Broadcast Suppression enables a user to set a desired limit of receive broadcast frames per port/per second to be forwarded out the other ports on the device. Any broadcast frames above this speciﬁed limit are dropped. In the event that broadcast frames are being suppressed, multicast and unicast frames continue to be switched.

1.1.8 Port/VLAN Redirect Functions

The port redirect function, also referred to as “Port Mirroring,” is a troubleshooting tool used to map trafﬁc from a single source port to a single destination port within the device. This feature allows frames, including those with errors to be copied and sent to an analyzer or RMON probe. The analyzer or RMON probe will see the data as if it were directly connected to the LAN segment of the source port.

The VLAN redirect function is similar to the port redirect function e xcept that the frames received by the device are redirected to a designated destination port according to the VLAN classiﬁcation of the frames received. Multiple VLANs can be directed to the same port. The VLAN redirect function is only supported when the device is operating as an 802.1Q switch.

1-4 Introduction

Overview

1.1.9 Rate Limiting

The Rate Limiting feature enables the SmartSwitch device to control trafﬁc rates on a per-port, per-priority basis. The network administrator can conﬁgure a rate limit (from 100 kbps to 1 Gbs) for a given port with an associated list of IEEE 802.1p priorities (which can include one, some, or all of the eight priority levels deﬁned in 802.1p). Each rate limit is speciﬁed as an inbound or an outbound limit. The combined rate of all trafﬁc on the port that matches the listed priorities cannot exceed the programmed limit. If the rate exceeds the deﬁned limit, frames are dropped until the rate falls below the limit.

Administrators can conﬁgure up to four rate limit rules per port; however, each rule must not include conﬂicting 802.1p priority values. In order to control trafﬁc inbound and outbound on the same port, two rate limit rules must be conﬁgured (one inbound and one outbound). Since the rate limiting operation occurs after the processing of the multi-layer classiﬁcation rules, the two features can be combined to provide application-aware rate limiting.

NOTE

This trafﬁc rate function is not supported on ports conﬁgured as SmartTrunk ports.

For more information about the application of the Trafﬁc Rate function, refer to the SmartSwitch Series 2E253, 2H252, 2H253 and 2H258 Local Management User’s Guide.

1.1.10 Flow Control

Flow control is a method of managing the ﬂow of frames between two devices. It ensures that a transmitting device does not overwhelm a receiving device with data. This is accomplished by the transmitting device pausing its transmission while the receiving device processes the frames already received.

The 2H253-25R supports the following two types of ﬂow control:

• Frame based 802.3x

• Back pressure

Frame based 802.3x flow control is supported on all Ethernet ports operating in the full duplex mode. Flow control can be enabled or disabled on a port-by-port basis.

Back pressure ﬂow control is supported on all Ethernet ports operating in the standard mode of operation. Flow control can be enabled or disabled on a port-by-port basis.

Introduction 1-5

Overview

1.1.11 GARP Switch Operation

Some or all ports on the switch may be activated to operate under the Generic Attribute Registration Protocol (GARP) applications, GARP VLAN Registration Protocol (GVRP) and/or GARP Multicast Registration Protocol (GMRP).

GARP is a protocol, or set of rules, that outlines a mechanism for propagating the port state and/or user information throughout a bridged LAN to keep track of users and VLANs on the network fabric. MAC bridges and end users alike can take part in the registration and de-registration of GARP attributes such as VLAN and multicast group membership. F or more details on ho w GVRP and GMRP handle frames under GARP, and how to conﬁgure the switch ports to take advantage of this operation, refer to the SmartSwitch Series 2E253, 2H252, 2H253 and 2H258 Local Management User’s Guide.

1.1.12 802.1 Port Priority

The 802.1 port priority is used to assign a default priority to the frames received without priority information in their tag header, map prioritized frames to the appropriate transmit queues, and prioritize frames according to protocol type. The 802.1 port priority is part of the IEEE 802.1D standard.

1.1.13 Management

Management of the 2H253-25R is accomplished using SNMP-compliant management tools for in-band Local Management. Out-of-band Local Management is provided through the RJ45 COM port on the front panel using a VT100 terminal or a VT100 terminal emulator. In-band remote management is possible through any SNMP compliant Network Management Software.

Local Management described in the SmartSwitch Series 2E253, 2H252, 2H253 and 2H258 Local Management User’s Guide provides the ability to manage the 2H253-25R, and optional HSIMs and VHSIMs that support Ethernet. For information about Local Management for optional non-Ethernet HSIMs or VHSIMs, refer to their respective user’s guide.

1.1.14 Switching Options

The 2H253-25R provides 802.1Q switching or SecureFast Switching Virtual Network Services between all of the front panel interfaces including the optional HSIM or VHSIM interface. In the

802.1Q mode (the default mode of operation), the switch functions as an 802.1D switch until VLANs are conﬁgured.

IEEE 802.1Q switching and SecureFast switching allow migration to Virtual Network technologies without requiring the replacement of existing equipment.

1-6 Introduction

Overview

1.1.15 Optional HSIMs and VHSIMs

Optional HSIMs and VHSIMs are a v ailable from Cabletron Systems for additional connectivity to various networking technologies. The HSIMs and VHSIMs available for the 2H253-25R are listed in the Release Notes shipped with the device.

1.1.16 Standards Compatibility

The 2H253-25R is fully compliant with the IEEE 802.3, 802.3u, 802.3x, 802.1D, and 802.1Q standards. The 2H253-25R provides IEEE 802.1D Spanning Tree Algorithm (STA) support to enhance the overall reliability of the network and protect against “loop” conditions. The 2H253-25R supports a wide variety of industry standard MIBs including RFC 1213 (MIB II), RFC 1757 (RMON), RFC 1493 (Bridge MIB), RFC 1354 (FIB MIB), and RFC 1190 (Path MTU Discovery). A full suite of Cabletron Systems Enterprise MIBs provide a wide array of statistical information to enhance troubleshooting. For information on how to extract and compile individual MIBs, contact Cabletron Systems.

1.1.17 Year 2000 Compliant

The 2H253-25R has an internal clock that can maintain the current time and date beyond the year

1999.

1.1.18 LANVIEW Diagnostic LEDs

LANVIEW diagnostic LEDs serve as an important troubleshooting aid by providing an easy way to observe the status of individual ports and overall network operations.

Introduction 1-7

Getting Help

1.2 GETTING HELP

For additional support related to this device or document, contact Cabletron Systems using one of the following methods:

W orld W ide Web http://www .cabletron.com/ Phone (603) 332-9400 Internet mail support@cabletron.com FTP ftp://ftp.cabletron.com/

Login anonymous Password your email address

To send comments or suggestions concerning this document, contact the Cabletron Systems T echnical Writing Department via the following email address: TechWriting@cabletron.com

Make sure to include the document Part Number in the email message.

Before calling Cabletron Systems, have the following information ready:

• Your Cabletron Systems service contract number

• A description of the failure

• A description of any action(s) already taken to resolve the problem (e.g., changing mode

switches, rebooting the unit, etc.)

• The serial and revision numbers of all involved Cabletron Systems products in the network

• A description of your network environment (layout, cable type, etc.)

• Network load and frame size at the time of trouble (if known)

• The device history (i.e., have you returned the device before, is this a recurring problem, etc.)

• Any previous Return Material Authorization (RMA) numbers

1-8 Introduction

Network Requirements

Before installing the 2H253-25R, review the requirements and speciﬁcations referred to in this chapter concerning the following:

• SmartTrunk (Section 2.1)

• 10BASE-T Twisted Pair Network (Section 2.2)

• 100BASE-TX Twisted Pair Network (Section 2.3)

The network installation must meet the requirements to ensure satisfactory performance of this equipment. Failure to do so will produce poor network performance.

2

NOTE

The Cabletron Systems in the following sections can be found on the Cabletron Systems World Wide Web site: http://www.cabletron.com/

SmartT runk User’s Guide

and

Cabling Guide

referred to

2.1 SmartTrunk

To connect the 2H253-25R to a network so it can take advantage of the SmartTrunk feature, there are certain rules concerning port connections and conﬁgurations that must be followed for proper operation. Refer to the Cabletron Systems SmartTrunk User’s Guide for additional information.

2.2 10BASE-T NETWORK

When connecting a 10BASE-T segment to an y of the 2H253-25R ports (1 through 24), ensure that the network meets the Ethernet network requirements of the IEEE 802.3 standard for 10BASE-T. The ports support Category 3 UTP cabling when connected to a 10BASE-T segment. Refer to the Cabletron Systems Cabling Guide for details.

NOTE

If a port is to operate at 10 and 100 Mbps, Category 5 cabling must be used. Refer to Section 2.3 for information about 100BASE-TX networks and cabling.

Network Requirements 2-1

100BASE-TX Network

2.3 100BASE-TX NETWORK

The two RJ21 connectors on the front panel of the 2H253-25R each provide 12 ﬁxed ports (ports 1 through 24) that support Category 5 UTP cabling. The device at the other end of the twisted pair segment must meet IEEE 802.3u 100BASE-TX Fast Ethernet network requirements for the devices to operate at 100 Mbps. Refer to the Cabletron Systems Cabling Guide for details.

NOTE

The ﬁxed ports of the 2H253-25R support Category 5 UTP cabling that has an impedance between 85 and 111 ohms.

The 2H253-25R is capab le of operating at either 10 or 100 Mbps. When the port is conﬁgured for Auto-Negotiation, the 2H253-25R automatically senses the speed of the other device and adjusts its speed accordingly.

2-2 Network Requirements

Only qualiﬁed personnel should install the 2H253-25R.

3

Installation

NOTE

This chapter provides the instructions required to install the 2H253-25R. A Phillips screwdriver is required to install options into the device or install the device into a rack. Follow the order of the sections listed below to correctly install the device.

• Unpacking the Device (Section 3.1)

• Installing Options (Section 3.2)

• Installing the Device (on a shelf or tabletop, or into a standard rack) (Section 3.3)

• Connecting to the Network (Section 3.4)

• Completing the Installation (Section 3.5)

Read the Release Notes shipped with the device to check for any exceptions to the supported features and operation documented in this guide.

3.1 UNPACKING THE DEVICE

Unpack the device as follows:

1. Open the box and remove the packing material protecting the 2H253-25R.

2. Verify the contents of the carton as listed in Table 3-1.

Installation 3-1

Installing Options

Table 3-1 Contents of 2H253-25R Carton

Item Quantity

2H253-25R 1 Antistatic Wrist Strap 1 Console Cable Kit 1 Rackmount Kit 1 Strain-Relief Bracket 1 Manual Accessory Kit 1 Power Cord 2

3. Remove the tape seal on the non-conductive bag to remove the 2H253-25R.

4. Perform a visual inspection of the device for any signs of physical damage. Contact Cabletron

Systems if there are any signs of damage. Refer to Section 1.2 for details.

3.2 INSTALLING OPTIONS

NOTE

If the 2H253-25R is to be installed with an optional HSIM or VHSIM, refer to the user’s guide of that device for the installation instructions.

Install any optional equipment before proceeding to Section 3.3.

3.3 INSTALLING THE DEVICE

The 2H253-25R may be installed on a tabletop, shelf, or in a 19-inch rack. Section 3.3.1 describes a tabletop or shelf installation and Section 3.3.2 describes the rackmount installation.

To prevent possible personal injury and/or damage to the unit, do NO T connect pow er to the 2H253-25R until instructed to do so.

3-2 Installation

Installing the Device

3.3.1 Tabletop or Shelf Installation

The following two subsections provide guidelines for installation on a tabletop or shelf.

Guidelines for Tabletop and Shelf Installations

Tabletop and shelf installations must be within reach of the network cabling and meet the requirements listed below:

• Locate the 2H253-25R within seven feet of an appropriately grounded power receptacle that

meets the power supply requirements listed in Appendix A.

• In a shelf installation, the shelf must support 13.5 kg (30 lb) of static weight for each

2H253-25R.

• Maintain a temperature of between 5°C (41°F) and 40°C (104°F) at the installation site with

ﬂuctuations of less than 10°C (18°F) per hour.

To ensure proper ventilation and prevent o verheating, lea ve a minim um clearance space of 5.1 cm (2.0 in) at the left, right, and rear of the 2H253-25R.

!

CAUTION

• Maintain a 2-inch clearance from the left, right, and rear sides of the device to provide adequate

ventilation.

Installation

For a tabletop or shelf installation, locate the 2H253-25R within seven feet of its po wer source and on an unrestricted free surface area as shown in Figure 3-1. Proceed to Section 3.3.3 for power connection instructions.

Installation 3-3

Installing the Device

B

C

FAST ETHERNET WORKGROUP SWITCH

A

A = 15 cm (6 in)

2H253-25R

RESET

LED MODE

RX-TX

DPX-SPD

PWR

CPU

COM

1234567891011

12

131413

16

17181920212223

15

24

D

B = 57 cm (22.5 in) C = 53 cm (21 in) D = 213 cm (7 ft)

2762-02

Figure 3-1 Tabletop or Shelf Installation

3.3.2 Rackmount Installation

To install the 2H253-25R in a 19-inch rack, Cabletron Systems includes a strain-relief bracket for cable management and an accessory kit containing the rackmount brackets, and mounting screws to attach the rackmount brackets and strain-relief bracket.

Guidelines for the Rackmount Installation

The installation site must be within reach of the network cabling and meet the requirements listed below:

• An appropriate grounded power receptacle must be located within seven feet of the location.

• Maintain a temperature of between 5°C (41°F) and 40°C (104°F) at the installation site with ﬂuctuations of less than 10°C (18°F) per hour.

To ensure proper ventilation and prevent o verheating, lea ve a minim um clearance space of 5.1 cm (2.0 in) at the left, right, and rear of the 2H253-25R.

!

CAUTION

Before installing the 2H253-25R into a rack, ensure that the rack supports the device(s)

WARNING

3-4 Installation

without compromising the stability of the rack. Otherwise, personal injury and/or equipment damage may result.

Installing the Device

Installation

Rack mounting the 2H253-25R involves the following:

• Attaching the strain-relief bracket

• Rack mounting the 2H253-25R (attaching the mounting brackets and fastening the device to the rack)

Attaching the Strain-Relief Bracket

Attach the strain-relief bracket to the 2H253-25R as follows:

1. Locate the strain-relief bracket and four 8-32 x 5/16-inch pan-head screws in the rackmount kit.

Do not attempt to attach the strain-relief bracket with screws other than the 8-32 x 5/16-inch screws included with the 2H253-25R. Use of longer screws may damage the

!

CAUTION

unit.

2. Place the 2H253-25R upside down (as shown in Figure 3-2) on a clean flat surface. Then attach

the strain-relief bracket to the bottom of the 2H253-25R using the four 8-32 x 5/16-inch pan-head screws.

Strain-Relief Bracket Screws

Strain-Relief Bracket

COM CPU PWR

15

17181920212223

131413

12

16

24

1234567891011

2H253-25R

RESET

DPX-SPD

RX-TX

MODE LED

FAST ETHERNET WORKGROUP SWITCH

Figure 3-2 Attaching the Strain-Relief Bracket

2762-03

Installation 3-5

Installing the Device

Rack Mounting the 2H253-25R

Proceed as follows to install the 2H253-25R into a 19-inch rack:

1. There are several mounting holes in the rackmount brackets and the bottom of the chassis so

that each mounting bracket may be adjusted forward or backward to mount the device further into, or out of the rack, depending on the installation requirements. Position the rackmount brackets over the appropriate holes.

2. Locate the four 6-32 x 1/4-inch flathead screws in the rackmount kit. Use these screws to attach

the rackmount brackets to the bottom of the 2H253-25R as shown in Figure 3-3.

Rackmount Bracket Screws

Rackmount Bracket

COM

CONSOLE

17181920212223

15

24

131413

16

TELCO

CPU PWR

12

1234567891011

2H253-25R

RESET

DPX-SPD

RX-TX MODE

LED

FAST ETHERNET WORKGROUP SWITCH

27621-04

Figure 3-3 Attaching the Rackmount Brackets

3. With the mounting brackets attached, position the 2H253-25R between the vertical frame

members of the 19-inch rack and fasten it securely with mounting screws as shown in

Figure 3-4.

FAST ETHERNET WORKGROUP SWITCH

2H253-25R

LED MODE RX-TX

DPX-SPD

PWR

RESET

CPU

COM

1234567891011

12

131413

Screws

Figure 3-4 Installing the Device in a Rack

16

17181920212223

15

24

19-Inch Rack

27621-05

3-6 Installation

3.3.3 Connecting Power

Installing the Device

NOTE

The two power supplies in the 2H253-25R have automatic voltage sensing that allows connection to power sources ranging from 100–125 Vac, 2.5 A or 200–240 Vac, 1.25 A, 50/60 Hz.

To connect the 2H253-25R to the power sources, proceed as follows:

1. Plug each power cord into a grounded wall outlet, see Figure 3-5. To take advantage of the load

sharing and redundancy capabilities, each power cord must be plugged into a separate dedicated ac outlet. The POWER LED turns ON (green) and the CPU LED alternates between green and amber during boot up. It takes approximately one minute for the 2H253-25R to boot up.

NOTE

If the power-up sequence is interrupted on this device, or if optional hardw are has been installed or removed, this device may run an extended diagnostics sequence that may take up to ﬁve minutes to complete.

Redundant

AC outlets are on separate circuits

Figure 3-5 2H253-25R Rear View

Primary

26001-06

Installation 3-7

Connecting to the Network

2. Observe the LANVIEW LEDs. After a successful boot, the PWR LED turns ON (green). If the

PWR LED is amber, there is no power redundancy. Check the power cord connections and the power source. If there are no problems with the power cord connections or power source and the PWR LED is still amber, contact Cabletron Systems for support. Refer to Section 1.2 for details.

3.4 CONNECTING TO THE NETWORK

This section provides the procedures for connecting unshielded twisted pair (UTP) segments from the network or other devices to the 2H253-25R. To make connections to an optional HSIM or VHSIM installed in the HSIM/VHSIM slot of the 2H253-25R, refer to the associated user’s guide for the HSIM or VHSIM.

NOTE

If the 2H253-25R is being installed in a network using SmartTrunking, there are rules concerning the network cable and port conﬁgurations that must be followed for SmartTrunking to operate properly. Before connecting the cables, refer to the Cabletron Systems

SmartTrunk User’s Guide

for the conﬁguration information.

Each of the two RJ21 connectors on the front panel have 12 UTP port connections. These ports (1 through 24) are 10/100 ports with internal crossovers. When connecting a workstation, use a straight-through cable. When connecting networking devices, such as another bridge, repeater, or router, use a crossover cable.

NOTE

If a port is connected to a 10-Mbps segment, Category 3 Unshielded Twisted P air (UTP) cable is sufﬁcient to use. However, if the segment is to carry 10- or 100-Mbps transmissions, use only Category 5 UTP cabling that has an impedance of between 85 and 111 ohms.

To connect an RJ21, proceed as follows:

1. Ensure that the device connected to the other end of the segment is powered on.

2. If using an RJ21 straight connector, plug it into the appropriate RJ21 port as shown in

Figure 3-6.

3-8 Installation

LED MODE Switch in RX–TX position

FAST ETHERNET WORKGROUP SWITCH

2H253-25R

Connecting to the Network

Receive (RX)

LED MODE

RX-TX

6

4

5

3

Transmit (TX)

12

10

8 7

11

9

14

15

13

19

17

18

16

23

21

24

22

20

Screw

DPX-SPD

2

LED MODE

1

RX-TX

DPX-SPD

PWR

RESET

CPU

COM

LED MODE Switch

Screw

RJ21

2762-07

Figure 3-6 Straight Cable Connection

3. Tighten the two screws on the RJ21 straight cable connector to secure it to the device.

NOTE

The cable pinouts for a 25-pair cable (RJ21) can be found in the Cabletron Systems

Cabling Guide.

Refer to Section 1.2 for details on how to obtain this document.

4. Verify that a link exists on each twisted pair segment of the RJ21 connector by checking that

the associated port RX LED is on (flashing amber, blinking green, or solid green). If the RX LED is off and the TX LED is not blinking amber, perform the following steps until it is on:

a. Verify that the LED switch located near the COM port of the device is in the left-most

position (RX and TX LED indicators) as shown in Figure 3-6.

b. Verify that the UTP cabling used is Category 3 (for 10BASE-T) or Category 5 (for

10BASE-T or 100BASE-TX). The Category 5 cabling must have an impedance of between 85 and 111 ohms.

NOTE

If a port is to operate at 10 and 100 Mbps, Category 5 cabling must be used. Refer to

Section 2.3 for information about 100BASE-TX networks and cabling.

Installation 3-9

Completing the Installation

c. Verify that the 100BASE-TX device at the other end of the twisted pair segment is powered

up.

d. Check the cable for continuity. e. If a link is not established, contact Cabletron Systems for technical support. Refer to

Section 1.2 for details.

5. Repeat steps 1 through 4 above, until all connections have been made.

3.5 COMPLETING THE INSTALLATION

After installing the 2H253-25R and any optional HSIM or VHSIM, and making the connections to the network, proceed as follows:

1. Secure the cables by running the cables along the strain-relief bracket and tying them to the

strain-relief bracket using cable ties.

2. The 2H253-25R is now ready to be configured through Local Management. Refer to the

SmartSwitch Series 2E253, 2H252, 2H253, and 2H258 Local Management User’s Guide for information on how to access and use Local Management.

3-10 Installation

4

Troubleshooting

This chapter provides information concerning the following:

• Using LANVIEW (Section 4.1)

• Troubleshooting Checklist (Section 4.2)

• Using the RESET Button (Section 4.3)

4.1 USING LANVIEW

The 2H253-25R uses Cabletron Systems’ built-in visual diagnostic and status monitoring system called LANVIEW. The LANVIEW LEDs (Figure 4-1) allow quick observation of the network status to aid in diagnosing network problems.

LED MODE

RX-TX

A

DPX-SPD

FAST ETHERNET WORKGROUP SWITCH

2H253-25R

RESET

COM

LED MODE

RX-TX

DPX-SPD

CPU

PWR

Receive (RX)

Transmit (TX)

1234567891011

CPU

B

DPX-SPD

12

131413

Full Duplex Status

LED MODE

RX-TX

16 15

17181920212223

Speed Status

LED functions when LED MODE switch is in the RX-TX position. This is the

A

default switch setting.

LED functions when LED MODE switch is in the DPX-SPD position.

B

Figure 4-1 LANVIEW LEDs

24

2762-09

Troubleshooting 4-1

Using LANVIEW

The LED MODE switch is located on the front panel of the 2H253-25R as shown in Figure 4-1. This switch enables the user to change the function of the port LEDs. When the LED MODE switch is moved to the left, the LEDs indicate the receive (RX) and transmit (TX) status of the respective ﬁxed ports (ports 1 through 24). When the LED MODE switch is mo ved to the right, the port LEDs indicate whether the respective ports are operating in the standard or full duplex mode (FDX) and if their operating speed (SPD) is 10 or 100 Mbps.

NOTE

The LED mode switch does not change the function of any LEDs on an installed HSIM or VHSIM.

Table 4-1 describes the LED indications and provides recommended actions as appropriate.

Refer to the HSIM or VHSIM user’s guide for a description of the HSIM or VHSIM LED indications.

NOTE

LED Color State Recommended Action

PWR Off Device electronics not

The terms flashing, blinking, and solid used in Table 4-1 indicate the following: Flashing indicates an LED is ﬂashing randomly. Blinking indicates an LED is ﬂashing at a steady rate (approximately 50% on, 50% off). Solid indicates a steady LED light. No pulsing.

Table 4-1 LANVIEW LEDs

1.Ensure that the power cords are receiving power from power supply(ies).

plugged in correctly and that there is power at the power source.

2.Contact Cabletron Systems for

assistance.

Green Functional. Power supply(ies)

Amber Indicates loss of power supply

4-2 Troubleshooting

operating normally.

redundancy.

None.

1.Ensure that the power cords are

plugged in correctly and that there is power at the power source.

2.Contact Cabletron Systems for

assistance.

Table 4-1 LANVIEW LEDs (Cont’d)

LED Color State Recommended Action

CPU Off Power off. Power up device.

Using LANVIEW

Red Blinking. Hardware failure has

occurred. Solid. Resetting, normal power

up reset.

Contact Cabletron Systems for assistance.

If the LED remains Red for several minutes, contact Cabletron Systems for assistance.

Amber Blinking. Crippled. Contact Cabletron Systems for

assistance.

Solid. T esting. If the LED remains Amber for several

minutes, contact Cabletron Systems for assistance.

Green Solid. Functional. None. Amber

and

Booting. Blinks amber and green while booting.

None.

Green

The following port RX and TX LED indications are only valid when the LED MODE switch is in the RX-TX position.

RX (Receive)

Off No link. None. Green Solid. Port enabled, link, no

None.

activity.

Blinking. Port disabled, link. None.

Amber Flashing. Port enabled, link,

None.

activity.

Red Diagnostic failure. Contact Cabletron Systems for

assistance.

Troubleshooting 4-3

Using LANVIEW

Table 4-1 LANVIEW LEDs (Cont’d)

LED Color State Recommended Action

TX (Transmit)

Off Port enabled, and no activity.

Should ﬂash green every two seconds indicating BPDUs being sent if STA is enabled

1.Ensure that the STA is enabled and

that there is a valid link.

2.Contact Cabletron Systems for

assistance.

and there is a valid link.

Green Flashing. Indicates activity.

None.

Rate indicates data rate.

Amber Blinking. Port in standby.

Port may be disabled due to Spanning Tree.

Red Flashing. Indicates collision

rate.

1.Ensure that the port is not disabled.

2.Contact Cabletron Systems for

assistance.

None, unless there is a high amount of activity. In this case, check for network conﬁguration problems or a defective device.

Solid. Diagnostic failure. Contact Cabletron Systems for

assistance.

The following port DPX and SPD LED indications are only valid when the LED MODE switch is in the DPX-SPD position.

FDX

Amber Port is operating in standard

(Full Duplex

Green Port is operating in full duplex

Status) SPD

Amber There is a link and the port is (Speed Status)

Green There is a link and the port is

4-4 Troubleshooting

None.

mode (10 Mbps or 100 Mbps).

None.

mode (20 Mbps or 200 Mbps).

None.

operating at 10 Mbps.

None.

operating at 100 Mbps.

Troubleshooting Checklist

4.2 TROUBLESHOOTING CHECKLIST

If the 2H253-25R is not working properly, refer to Table 4-2 for a checklist of possible problems, causes, and recommended actions to resolve the problem.

Table 4-2 Troubleshooting Checklist

Problem Possible Cause Recommended Action

All LEDs are OFF.

No Local Management Password screen.

Loss of power. Check for proper connection of the

power cable and its access to a live outlet.

Installed improperly. Ensure that the 2H253-25R was

installed properly according to the installation instructions in Chapter 3.

Autobaud is enabled, but the baud rate has not yet been

Press ENTER (RETURN) (may take up to four times).

detected. Terminal setup is not correct. Refer to the SmartSwitch Series

2E253, 2H252, 2H253, and 2H258 Local Management User’s Guide for

proper setup procedures.

Improper console cable pinouts. Refer to Appendix A for proper

console port pinouts.

Corrupt ﬁrmware image, or hardware fault.

If possible, attempt to download the image to the 2H253-25R again. Refer to Section B.3 for instructions to clear NVRAM.

Cannot navigate beyond Password screen.

Improper Community Names Table.

1.Refer to the SmartSwitch Series

2E253, 2H252, 2H253, and 2H258 Local Management User’s Guide for

the Community Names Table setup.

2.If you have forgotten the Community Names, refer to

Appendix B for instructions on how

to set the mode switch to reset the Community Names to their default values.

Troubleshooting 4-5

Troubleshooting Checklist

Table 4-2 Troubleshooting Checklist (Cont’d)

Problem Possible Cause Recommended Action

Cannot contact the 2H253-25R through in-band management.

Port(s) goes into standby for no apparent reason.

IP address not assigned. Refer to the SmartSwitch Series

2E253, 2H252, 2H253, and 2H258 Local Management User’s Guide for

IP address assignment procedure.

Port is disabled. Enable port. Refer to the SmartSwitch

Series 2E253, 2H252, 2H253, and 2H258 Local Management User’s Guide for instructions to

enable/disable ports.

No link to device. 1.Verify that all network connections

between the network management station and the 2H253-25R are valid and operating.

2.If the problem continues, contact Cabletron Systems for assistance.

Loop condition detected. 1.Verify that Spanning Tree is

enabled. Refer to the SmartSwitch

Series 2E253, 2H252, 2H253, and 2H258 Local Management User’s Guide for the instructions to set the

type of STA.

2.Review network design and delete unnecessary loops.

3.If the problem continues, contact Cabletron Systems for assistance.

4-6 Troubleshooting

Troubleshooting Checklist

Table 4-2 Troubleshooting Checklist (Cont’d)

Problem Possible Cause Recommended Action

User parameters (IP address, Device and Module name, etc.) were lost when the 2H253-25R power was cycled or the front panel RESET button was pressed.

1. Position of Mode switch (7), NVRAM Reset, was changed sometime before either cycling power or pressing the RESET button, causing the user-entered parameters to reset to factory default settings.

2.Clear NVRAM was set through Local Management.

1.Reenter the lost parameters as necessary. Refer to the SmartSwitch

Series 2E253, 2H252, 2H253, and 2H258 Local Management User’s Guide for the instructions to

configure the device through Local Management.

2.If the problem continues, contact Cabletron Systems for assistance.

Troubleshooting 4-7

Using the RESET Button

4.3 USING THE RESET BUTTON

The RESET button shown in Figure 4-2 resets and re-initializes the 2H253-25R.

Pressing the RESET button resets the device, and all current s witching being perf ormed by the device is halted. A network downtime of up to two minutes will result from this

!

CAUTION

action.

FAST ETHERNET WORKGROUP SWITCH

2H253-25R

RESET

LED MODE

RX-TX

DPX-SPD

PWR

CPU

COM

RESET Button

1234567891011

12

16

131413

15

17181920212223

24

2762-10

Figure 4-2 RESET Button

To reset the 2H253-25R processor, press and release the RESET button. The 2H253-25R goes through a reset process for approximately 60 seconds. Additional downtime may result as the device reenters the network.

NOTE

It is not recommended to press the RESET button while the device is already in reset mode. If so, the device will enter an extended diagnostic procedure, which is unnecessary for normal operation. This extended diagnostic procedure takes much longer than a minute.

4-8 Troubleshooting

A

Speciﬁcations

This appendix provides operating speciﬁcations for the Cabletron Systems 2H253-25R. Cabletron Systems reserves the right to change these speciﬁcations at any time without notice.

A.1 DEVICE SPECIFICATIONS

Processors: Intel i960 RISC processor Power PC Dynamic Random Access

Memory (DRAM): 20 MB expandable to 32 MB FLASH Memory: 8 MB Shared Memory: 4 MB

A.2 PHYSICAL PROPERTIES

Dimensions: 7.11H x 43.18W x 46.99D (cm)

2.8H x 17W x 18.5D (in) Approximate Weight (Unit): 8.18 kg (18 lb) MTBF (Predicted): 200,000 hours

Speciﬁcations A-1

Electrical Speciﬁcations

A.3 ELECTRICAL SPECIFICATIONS

Line Input Range, Volts (V): 100–125 Vac 200–240 Vac Input Current, Amperes (A): 2.3 A 1.2 A Frequency, Hertz (Hz): 50/60 Hz 50/60 Hz Input Power, Volt Amperes (V A:) 250 VA 250 V A

A.4 ENVIRONMENTAL REQUIREMENTS

Operating Temperature: 5°C to 40°C (41°F to 104°F) Storage Temperature: -30°C to 73°C (-22°F to 164°F) Operating Relative Humidity: 5% to 90% (non-condensing)

A.5 INPUT/OUTPUT PORTS

Ports 1 through 24: Fast Ethernet 10/100 Mbps (10BASE-T and

100BASE-TX compliant) with RJ21 type connectors (twelve ports per connector).

Interface Slot: Slot accepts optional High Speed Interface Module

(HSIM) or Very High Speed Interface Module (VHSIM) to provide a variety of cabling connections.

A-2 Speciﬁcations

COM Port Pinout Assignments

A.6 COM PORT PINOUT ASSIGNMENTS

The COM port is a serial communications port that supports Local Management or connection to a UPS.

T able A-1 shows the COM port pin assignments.

Table A-1 COM Port Pin Assignments

Pin Signal Name Input/Output

1 Transmit Data (XMT) Output 2 Data Carrier Detect (DCD) Output 3 Data Set Ready (DSR) Input 4 Receive Data (RCV) Input 5 Signal Ground (GND) NA 6 Data Terminal Ready (DTR) Output 7 Request to Send (RTS) Input 8 Clear to Send (CTS) NA

A.7 REGULATORY COMPLIANCE

This equipment meets the following safety and electromagnetic compatibility (EMC) requirements:

Safety: UL 1950, CSA C22.2 No 950, 73/23/EEC,

EN 60950, IEC 950

Electromagnetic Compatibility (EMC): FCC Part 15, CSA C108.8, 89/336/EEC, EN 55022,

EN 61000-3-2, EN 61000-3-3, EN 50082-1, AS/NZS 3548, VCCI V-3

Speciﬁcations A-3

B

Optional Installations and

Mode Switch Bank Settings

ONLY QUALIFIED SERVICE PERSONNEL SHOULD ATTEMPT THE FOLLOWING PROCEDURES.

NUR QUALIFIEZIERTE SERVICE PERSONNAL DIE FOLGENDE PROCEDURE FOLGEN SOLLTEN.

SOLAMENTE PERSONAL CALIFICADO DEBE INTENTAR ESTE PROCEDIMIENTO.

The top cover must be removed to gain access to the mode bank switches, to install optional FLASH or DRAM Single In-line Memory Modules (SIMMs), or to install an optional High Speed Interface Module (HSIM) or Very High Speed Interface Module (VHSIM).

This appendix covers the following items:

• Required tools (Section B.1)

• Removing the chassis cover (Section B.2)

• Locations, functions, and settings for the mode switches (Section B.3)

• Installing optional SIMM upgrades (Section B.4)

• Location of optional HSIMs (Section B.5)

B.1 REQUIRED TOOLS

Use the following tools to perform the procedures provided in this appendix:

• Antistatic wrist strap

• Phillips screwdriver

Optional Installations and Mode Switch Bank Settings B-1

Removing the Chassis Cover

B.2 REMOVING THE CHASSIS COVER

This section describes how to remove the 2H253-25R chassis cover.

DO NOT REMOVE THE COVER FROM THE 2H253-25R WHILE POWER IS APPLIED TO THE UNIT. HAZARDOUS VOLTAGES ARE PRESENT AND COULD CAUSE PERSONAL INJURY AND/OR DAMAGE THE UNIT.

DO NOT POWER UP THE 2H253-25R AGAIN UNTIL THE COVER AND SCREWS ARE IN PLACE.

DECKEL VON DAS 2H253-25R NICHT ABZIEHEN UNTER SPANNUNG. GEFAHR FÜR DAS PERSONNAL UND/ODER DAS GERÄT WEGEN GEFÄHRLICHE SPANNUNGEN ENSTEHT.

2H253-25R NICHEINSCHALTEN SO LANG DER DECKEL UND SCHRAUBEN NICHT EINGEBAUT SIND.

NO DEBE DE REMOVER LA TAPA DURENTE QUE ESTE CONELTADO A LA CORRIENTE, UNA DESCARGA ELECTRICA LE PUEDE CAUSAR Y PROBOCARLE DAÑOS, AL IGUAL QUE AL APARATO.

NO ENCHUFE A LA CORRIENTE HASTA QUE LA TAPA Y LOS TORNILLOS ESTEN EN SU LUGAR.

CAUTION: THIS UNIT MAY HAVE MORE THAN ONE POWER SUPPLY CORD. DISCONNECT TWO POWER SUPPLY CORDS BEFORE SERVICING TO AVOID ELECTRIC SHOCK.

VORSICHT: DIESES GERÄT HAT MEHR ALS EINEN NETZANSCHLUß. TRENNEN SIE VOR WARTUNGSARBEITEN DIE 2 NET ZANSCHLÜSSE VOM NETZ, UM ELEKTRISCHE SCHLÄGE ZU VERMEIDEN.

ATTENTION: CET APPAREIL COMPORTE PLUS D’UN CORDON D’ALIMENTATION. RAFIN DE PREVENIR LES CHOCS ELECTRIQUES, DEGRANCHER LES DEUX CORDONS D’ALIMENTATION AVANT DE FAIRE LE DEPANNAGE.

B-2 Optional Installations and Mode Switch Bank Settings

Removing the Chassis Cover

To remove the chassis cover, proceed as follows:

1. Disconnect the 2H253-25R from the network as follows: a. Unplug both power cords from the rear of the chassis.

TURN OFF THE 2H253-25R BY UNPLUGGING THE POWER CORD FROM THE REAR OF THE CHASSIS.

AM HINTEN DES 2H253-25R STECHEI ABZIEHEN UM AUS ZU SCHALTEN. APAGUE EL 2H253-25R DESENCHUFE EL CABLE DE LA UNIDAD.

Before performing step b, mark the cables connected to the 2H253-25R according to

TIP

their associated port numbers. This is recommended for ease of reinstallation.

b. Disconnect all network cables attached to the 2H253-25R.

2. If the 2H253-25R is rack mounted, remove it from the rack and remove the rackmount brackets

(refer to Chapter 3).

3. Use a Phillips screwdriver to remove the four screws attaching the cover to the chassis. (See

Figure B-1.)

4. Remove the cover by sliding it back until it clears the front of the chassis and then lifting it

straight up and off the chassis.

To reinstall the chassis cover, perform the removal procedures in reverse.

Optional Installations and Mode Switch Bank Settings B-3

Removing the Chassis Cover

Chassis Cover

Front Panel

Screws (4)

Chassis

Note: If the device was rack mounted, the four screws fastening the cover to the front panel are removed and installed along with the rackmount brackets.

Figure B-1 Removing the Chassis Cover

B-4 Optional Installations and Mode Switch Bank Settings

2504-30

Setting the Mode Switches

B.3 SETTING THE MODE SWITCHES

Figure B-2 shows the location of the mode switches and the switch settings for normal operation.

These switches are set at the factory and rarely need to be changed. Switch deﬁnitions and positions are as follows:

• Switches 1 through 4 – For Cabletron Systems use only.

• Switch 5 – COM Port Autobaud. The default (OFF) position enables Autobaud sensing on the

COM port for Local Management sessions. Changing the switch to the ON position disables Autobaud sensing and sets the COM port to 9600 baud for Local Management sessions.

TOP VIEW WITHOUT COVER

Primary Power Supply

FRONT PANEL

• Switch 6 – Forced BootP.

NOTE

After changing the position of switch 6, DO NO T reapply pow er to the chassis until there is a station on the network acting as a BootP server, which contains the downloadable ﬁrmware image ﬁle.

Redundant Power Supply

MODE SWITCH BANK

ON

OFF

12345678

25041-11

Figure B-2 Mode Switch Location

Optional Installations and Mode Switch Bank Settings B-5

SIMM Upgrade

DO NOT attempt a Forced BootP unless a BootP server has been configured for the 2H253-25R. The BootP server references the location of a station acting as a Trivial File Transfer Protocol (TFTP) server containing the 2H253-25R image file.

When the position of Switch 6 is changed and the power is cycled to the 2H253-25R, the device requests the image file location from the BootP server and uses TFTP to download the image from the TFTP server. If one of these requirements is not met, the 2H253-25R continues to request either the BootP server or the TFTP server until the RESET button on the 2H253-25R is pressed. Once the RESET button is pressed, the 2H253-25R resets after one minute and loads the image stored in FLASH memory.

• Switch 7 – Clear NVRAM. Changing the position of this switch resets NVRAM on the next

power-up of the de vice. All user-entered parameters, such as the IP address, de vice names, etc., are reset to the factory default settings. Once the 2H253-25R resets, you can either use the factory default settings or reenter your own parameters.

• Switch 8 – Reset Password/Community Names. Changing the position of this switch clears

user-entered passwords stored in NVRAM, and restores the factory default passwords on the next power-up of the de vice. Once the 2H253-25R resets, you can either use the factory def ault settings or reenter your own passwords.

NOTE

Do not change the position of Switch 8 unless it is necessary to reset the module super-user conﬁgured passwords to their factory default settings.

B.4 SIMM UPGRADE

Memory upgrade is available for the 2H253-25R to expand its DRAM to 32 MB. This section explains how to locate and add/replace a Single In-line Memory Module (SIMM). For information on the available SIMM upgrades, call Cabletron Systems for technical support. For details on getting help, refer to Section 1.2.

B-6 Optional Installations and Mode Switch Bank Settings

B.4.1 Locating SIMMs

Figure B-3 shows the two locations of the DRAM SIMM connector.

TOP VIEW WITHOUT COVER

SIMM Upgrade

Primary Power Supply

DRAM

FRONT PANEL

Figure B-3 SIMM Slot Locations

B.4.2 Installing the DRAM SIMM

Observe all antistatic precautions when handling sensitive electronic equipment.

!

CAUTION

Redundant Power Supply

2504-84

To install a DRAM SIMM, refer to Figure B-4 and proceed as follows:

1. With the SIMM alignment notch oriented as shown in Figure B-4, insert the SIMM down

between the connector teeth.

Optional Installations and Mode Switch Bank Settings B-7

SIMM Upgrade

2. Pivot the SIMM downward so the connector clips align with the two side notches of the SIMM

and the connector clips lock the SIMM into place.

Side Notch

Connector

Clip

2

Connector

Teeth

1

Alignment Notch

SIMM

Figure B-4 Installing the DRAM

Side Notch

Clip

2504-91

B-8 Optional Installations and Mode Switch Bank Settings

Installing Optional HSIM or VHSIM Interface Modules

B.5 INSTALLING OPTIONAL HSIM OR VHSIM INTERFACE MODULES

Figure B-5 shows the location of the two connectors for an optional High HSIM or VHSIM. Depending on the HSIM or VHSIM installed, one or both connectors are used.

NOTE

The installation instructions for the optional HSIM or VHSIM are in the associated user’s guide.

TOP VIEW WITHOUT COVER

Primary Power Supply

Redundant Power Supply

Optional HSIM or VHSIM

Connectors

FRONT PANEL

Figure B-5 HSIM and VHSIM Connector Locations

Optional Installations and Mode Switch Bank Settings B-9

2504-31

Index

Numerics

100BASE-T

requirements 2-2

10BASE-T

requirements 2-1

2H253-25R

description of 1-1 front panel 1-1

802.1p Port Priority

introduction to 1-6

A

Auto-Negotiation

introduction to 1-2

B

Broadcast Suppression

introduction to 1-4

C

Cable specifications

100BASE-TX network 2-2

10BASE-T network 2-1 Chassis cover, removal of B-2 COM port

pin assignments A-3 Connecting to the network 3-8 Connectivity

introduction to 1-2

D

Document conventions xvii

E

Environmental requirements A-2

F

Flow control

introduction to 1-5

Full Duplex Switched Ethernet, introduction

to 1-3

G

Getting help 1-8

H

High speed interface module

installation of B-9

I

Installation

High speed interface module

location of B-9 in a rack 3-4 on a tabletop or shelf 3-3 Very High speed interface module

location of B-9

Index-1

Index

L

LANVIEW LEDs 4-1 Local Management

introduction to 1-6

M

Management

use of 1-6

Memory

upgrading B-6

Mode Switch

setting B-5

N

Network connections 3-8

P

Physical properties A-1 Port Redirect Function, introduction to 1-4 Power connection 3-7

R

S

SIMMs

installing DRAM B-7 location B-7

SmartTrunk

introduction to 1-3 Specifications A-1 Standards compatibility 1-7 Switching options

introduction to 1-6

T

Troubleshooting 4-1

checklist 4-5

U

Unpacking 3-1

V

Very high speed interface module

installation of B-9 VLAN Redirect Function, introduction to 1-4

Redirect functions

port and VLAN, introduction to 1-4 Regulatory Compliance A-3 Related manuals xvi Remote Monitoring (RMON)

introduction to 1-4 RESET button 4-8 Runtime IP address discovery

introduction to 1-3

Index-2

Cabletron Systems 2H253-25R User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

NOTICE

Contents

Figures

Tables

About This Guide

USING THIS GUIDE

STRUCTURE OF THIS GUIDE

Related Documents

Document Conventions

Introduction

1.1 OVERVIEW

1.1.1 Connectivity

1.1.2 Auto-Negotiation

1.1.3 Runtime IP Address Discovery

1.1.4 Full Duplex Switched Ethernet

1.1.5 SmartTrunk

1.1.6 Remote Monitoring (RMON)

1.1.7 Broadcast Suppression

1.1.8 Port/VLAN Redirect Functions

1.1.9 Rate Limiting

1.1.10 Flow Control

1.1.11 GARP Switch Operation

1.1.12 802.1 Port Priority

1.1.13 Management

1.1.14 Switching Options

1.1.15 Optional HSIMs and VHSIMs

1.1.16 Standards Compatibility

1.1.17 Year 2000 Compliant

1.1.18 LANVIEW Diagnostic LEDs

1.2 GETTING HELP

Network Requirements

2.1 SmartTrunk

2.2 10BASE-T NETWORK

2.3 100BASE-TX NETWORK

Installation

3.1 UNPACKING THE DEVICE

3.2 INSTALLING OPTIONS

3.3 INSTALLING THE DEVICE

3.3.1 Tabletop or Shelf Installation

3.3.2 Rackmount Installation

3.3.3 Connecting Power

3.4 CONNECTING TO THE NETWORK

3.5 COMPLETING THE INSTALLATION

Troubleshooting

4.1 USING LANVIEW

Troubleshooting Checklist

Using the RESET Button

A.1 DEVICE SPECIFICATIONS

A.2 PHYSICAL PROPERTIES

A.3 ELECTRICAL SPECIFICATIONS

A.4 ENVIRONMENTAL REQUIREMENTS

A.5 INPUT/OUTPUT PORTS

A.6 COM PORT PINOUT ASSIGNMENTS

A.7 REGULATORY COMPLIANCE

B.1 REQUIRED TOOLS

Optional Installations and Mode Switch Bank Settings B-1

B.2 REMOVING THE CHASSIS COVER

B.3 SETTING THE MODE SWITCHES

B.4 SIMM UPGRADE

B.4.1 Locating SIMMs

B.4.2 Installing the DRAM SIMM

B.5 INSTALLING OPTIONAL HSIM OR VHSIM INTERFACE MODULES

Index

Numerics