Enterasys Networks Securestack A2 A2H124 24P Users Manual

A2H124-24P to the manual f920cf7a-a408-4f16-b7d6-14573c187c66

2015-02-04

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SecureStack A2
PoE Fast Ethernet Switches

Hardware Installation Guide
A2H124-24P
A2H124-48P

P/N 9034154-03

Electrical Hazard: Only qualified personnel should perform installation procedures.
Riesgo Electrico: Solamente personal calificado debe realizar procedimientos de instalacion.
Elektrischer Gefahrenhinweis: Installationen sollten nur durch ausgebildetes und qualifiziertes
Personal vorgenommen werden.

Notice
Enterasys Networks reserves the right to make changes in specifications and other information contained in this
document and its web site without prior notice. The reader should in all cases consult Enterasys Networks to
determine whether any such changes have been made.
The hardware, firmware, or software described in this document is subject to change without notice.
IN NO EVENT SHALL ENTERASYS NETWORKS 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 DOCUMENT, WEB SITE, OR THE INFORMATION CONTAINED IN THEM, EVEN
IF ENTERASYS NETWORKS HAS BEEN ADVISED OF, KNEW OF, OR SHOULD HAVE KNOWN OF, THE
POSSIBILITY OF SUCH DAMAGES.
Enterasys Networks, Inc.
50 Minuteman Road
Andover, MA 01810
© 2007 Enterasys Networks, Inc. All rights reserved.
Part Number: 9034154‐03 February 2007
ENTERASYS, ENTERASYS NETWORKS, ENTERASYS MATRIX, LANVIEW, NETSIGHT, WEBVIEW, and any logos
associated therewith, are trademarks or registered trademarks of Enterasys Networks, Inc., in the United States and
other countries.
All other product names mentioned in this manual may be trademarks or registered trademarks of their respective
companies.
Documentation URL: http://www.enterasys.com/support/manuals
Documentacion URL: http://www.enterasys.com/support/manuals
Dokumentation im Internet: http://www.enterasys.com/support/manuals

REGULATORY COMPLIANCE INFORMATION
FEDERAL COMMUNICATIONS COMMISSION (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
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.

CLASS A ITE NOTICE
WARNING: This is a Class A product. In a domestic environment this product may cause radio interference in which
case the user may be required to take adequate measures.

CLASE A. AVISO DE ITE
ADVERTENCIA: Este es un producto de Clase A. En un ambiente doméstico este producto puede causar
interferencia de radio en cuyo caso puede ser requerido tomar medidas adecuadas.

KLASSE A ITE ANMERKUNG
WARNHINWEIS: Dieses Produkt zählt zur Klasse A ( Industriebereich ). In Wohnbereichen kann es hierdurch zu
Funkstörungen kommen, daher sollten angemessene Vorkehrungen zum Schutz getroffen werden.

PRODUCT SAFETY
This product complies with the following: UL 60950, CSA C22.2 No. 60950, 73/23/EEC, EN 60950, IEC 60950, EN 60825,
21 CFR 1040.10.

SEGURIDAD DEL PRODUCTO
El producto de Enterasys cumple con lo siguiente: UL 60950, CSA C22.2 No. 60950, 73/23/EEC, EN 60950, IEC 60950,
EN 60825, 21 CFR 1040.10.

PRODUKTSICHERHEIT
Dieses Produkt entspricht den folgenden Richtlinien: UL 60950, CSA C22.2 No. 60950, 73/23/EEC, EN 60950,
IEC 60950, EN 60825, 21 CFR 1040.10.
ii

ELECTROMAGNETIC COMPATIBILITY (EMC)
This product complies with the following: 47 CFR Parts 2 and 15, CSA C108.8, 89/336/EEC, EN 55022, EN 61000‐3‐2,
EN 61000‐3‐3, EN 55024, AS/NZS CISPR 22, VCCI V‐3.

COMPATIBILIDAD ELECTROMÁGNETICA (EMC)
Este producto de Enterasys cumple con lo siguiente: 47 CFR Partes 2 y 15, CSA C108.8, 89/336/EEC, EN 55022,
EN 55024, EN 61000‐3‐2, EN 61000‐3‐3, AS/NZS CISPR 22, VCCI V‐3.

ELEKTRO- MAGNETISCHE KOMPATIBILITÄT ( EMC )
Dieses Produkt entspricht den folgenden Richtlinien: 47 CFR Parts 2 and 15, CSA C108.8, 89/336/EEC, EN 55022,
EN 61000‐3‐2, EN 61000‐3‐3, EN 55024, AS/NZS CISPR 22, VCCI V‐3.

HAZARDOUS SUBSTANCES
This product complies with the requirements of European Directive, 2002/95/EC, Restriction of Hazardous Substances
(RoHS) in Electrical and Electronic Equipment.

EUROPEAN WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE) NOTICE

In accordance with Directive 2002/96/EC of the European Parliament on waste electrical and electronic equipment
(WEEE):
1.

The symbol above indicates that separate collection of electrical and electronic equipment is required and that this
product was placed on the European market after August 13, 2005, the date of enforcement for Directive
2002/96/EC.

When this product has reached the end of its serviceable life, it cannot be disposed of as unsorted municipal waste.
It must be collected and treated separately.

It has been determined by the European Parliament that there are potential negative effects on the environment
and human health as a result of the presence of hazardous substances in electrical and electronic equipment.

It is the users’ responsibility to utilize the available collection system to ensure WEEE is properly treated.
For information about the available collection system, please go to http://www.enterasys.com/services/support/ or
contact Enterasys Customer Support at 353 61 705586 (Ireland).

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.

BSMI EMC STATEMENT — TAIWAN
This is a class A product. In a domestic environment this product may cause radio interference in which case the user
may be required to take adequate measures.

SAFETY INFORMATION
CLASS 1 LASER TRANSCEIVERS
SINGLE MODE NETWORK EXPANSION MODULES USE CLASS 1 LASER TRANSCEIVERS.
READ THE FOLLOWING SAFETY INFORMATION
BEFORE INSTALLING OR OPERATING THESE MODULES.
The Class 1 laser transceivers use an optical feedback loop to maintain Class 1 operation limits. This control loop
eliminates the need for maintenance checks or adjustments. The output is factory set, and does not allow any user
adjustment. Class 1 Laser transceivers comply with the following safety standards:
• 21 CFR 1040.10 and 1040.11 U.S. Department of Health and Human Services (FDA).
• IEC Publication 825 (International Electrotechnical Commission).
• CENELEC EN 60825 (European Committee for Electrotechnical Standardization).
When operating within their performance limitations, laser transceiver output meets the Class 1 accessible emission
limit of all three standards. Class 1 levels of laser radiation are not considered hazardous.
When the connector is in place, all laser radiation remains within the fiber. The maximum amount of radiant power
exiting the fiber (under normal conditions) is ‐12.6 dBm or 55 x 10‐6 watts.
Removing the optical connector from the transceiver allows laser radiation to emit directly from the optical port. The
maximum radiance from the optical port (under worst case conditions) is 0.8 W cm‐2 or 8 x 103 W m2 sr‐1.
Do not use optical instruments to view the laser output. The use of optical instruments to view laser output increases
eye hazard. When viewing the output optical port, power must be removed from the network adapter.
v

DECLARATION OF CONFORMITY
Application of Council Directive(s): 89/336/EEC
73/23/EEC
Manufacturer’s Name: Enterasys Networks, Inc.
Manufacturer’s Address:

European Representative Address:

50 Minuteman Road
Andover, MA 01810
USA
Enterasys Networks, Ltd.
Nexus House, Newbury Business Park
London Road, Newbury
Berkshire RG14 2PZ, England

Conformance to Directive(s)/Product Standards: EC Directive 89/336/EEC
EN 55022
EN 61000‐3‐2
EN 61000‐3‐3
EN 55024
EC Directive 73/23/EEC
EN 60950
EN 60825
Equipment Type/Environment:

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

Enterasys Networks, Inc. declares that the equipment packaged with this notice conforms to the above directives.

ENTERASYS NETWORKS, INC.
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vii

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viii

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Contents
About This Guide
Who Should Use This Guide ............................................................................................................... xv
How to Use This Guide ...................................................................................................................... xvi
Related Documents ........................................................................................................................... xvi
Conventions Used in This Guide .......................................................................................................xvii

Chapter 1: Introduction
Overview ............................................................................................................................................1-2
A2H124-24P and A2H124-48P ...................................................................................................1-2
Stack Connections .......................................................................................................................1-4
Redundant Power Supply Capability ...........................................................................................1-4
PoE (Power over Ethernet) Support ..................................................................................................1-4
Connectivity .......................................................................................................................................1-5
Management ......................................................................................................................................1-6
Switch Configuration Using WebView .........................................................................................1-6
Switch Configuration Using CLI Commands ...............................................................................1-6
Standards Compatibility .....................................................................................................................1-6
LANVIEW Diagnostic LEDs ...............................................................................................................1-7
Getting Help .......................................................................................................................................1-7

Chapter 2: Network Requirements
10BASE-T Network ............................................................................................................................2-1
100BASE-TX Network .......................................................................................................................2-2
1000BASE-FX Network .....................................................................................................................2-2
1000BASE-T Network ........................................................................................................................2-2

Chapter 3: Hardware Installation
Considerations Prior to Installation ....................................................................................................3-2
Required Tools ...................................................................................................................................3-2
Unpacking the Switch ........................................................................................................................3-2
Installing the Switch on a Flat Surface ...............................................................................................3-3
Installing the Rubber Feet ...........................................................................................................3-3
Guidelines for Flat Surface Installation ........................................................................................3-5
Rack Mounting the Switch ................................................................................................................3-6
Guidelines for Rackmount Installation .........................................................................................3-6
Attaching Brackets and Installing in Rack ...................................................................................3-6
Connecting Stacking Cables ..............................................................................................................3-7
Configuring Switches in a Stack ........................................................................................................3-9
About SecureStack A2 Switch Operation in a Stack ...................................................................3-9
Recommended Procedures for New and Existing Stacks .........................................................3-10

Connecting AC and PoE Power .......................................................................................................3-12
AC Power ..................................................................................................................................3-12
C2RPS-PoE Redundant Power System ....................................................................................3-13
Stack Initialization Overview ......................................................................................................3-14
Connecting to Console Port for Local Management ........................................................................3-14
What Is Needed .........................................................................................................................3-15
Connecting to an IBM or Compatible Device .............................................................................3-16
Connecting to a VT Series Terminal ..........................................................................................3-17
Connecting to a Modem ............................................................................................................3-18
Connecting to the Network ...............................................................................................................3-19
Connecting UTP Cables ............................................................................................................3-19
Installing Optional Mini-GBICs .........................................................................................................3-22
Removing the Mini-GBIC ...........................................................................................................3-26
Connecting Fiber-Optic Cables to MT-RJ Ports ........................................................................3-27
Connecting Fiber-Optic Cables to LC Ports ..............................................................................3-30
Completing the Installation ...............................................................................................................3-32
Initial Logon to Switch Management ..........................................................................................3-32

Chapter 4: Troubleshooting
Using LANVIEW .................................................................................................................................4-2
Troubleshooting Checklist ..................................................................................................................4-7
Using the Reset Password Switch .....................................................................................................4-9

Appendix A: Specifications
Switch Specifications ........................................................................................................................ A-1
Mini-GBIC Input/Output Specifications ............................................................................................. A-4
Gigabit Ethernet Specifications ......................................................................................................... A-4
MGBIC-LC01/MGBIC-MT01 Specifications (1000BASE-SX) ..................................................... A-4
MGBIC-LC03 Specifications (1000BASE-SX) ............................................................................ A-5
MGBIC-LC09 Specifications (1000BASE-LX) ............................................................................ A-6
MGBIC-08 Specifications (1000BASE-ELX) .............................................................................. A-6
MGBIC-02 Specifications (1000BASE-T) ................................................................................... A-7
Console Port Pinout Assignments .................................................................................................... A-7
Regulatory Compliance ..................................................................................................................... A-8

Index

xii

Figures
1-1
1-2
3-1
3-2
3-3
3-4
3-5
3-6
3-7
3-8
3-9
3-10
3-11
3-12
3-13
3-14
3-15
3-16
3-17
3-18
3-19
3-20
3-21
4-1
4-2
4-3
A-1

A2H124-24P Stackable Switch ..............................................................................................1-3
A2H124-48P Stackable Switch ..............................................................................................1-3
Chassis Bottom, Rubber Feet Placement ..............................................................................3-4
Area Guidelines for Switch Installation on Flat Surface .........................................................3-5
Attaching the Rackmount Brackets ........................................................................................3-6
Fastening the Switch to the Rack...........................................................................................3-7
Stacking Cable Connections ..................................................................................................3-8
Switch Rear View (A2H124-48P shown) .............................................................................3-12
Accessing the RPS connector..............................................................................................3-13
DB9 Male Console Port Pinout Assignments.......................................................................3-15
Connecting an IBM PC or Compatible .................................................................................3-16
Connecting a VT Series Terminal ........................................................................................3-17
Connecting to a Modem .......................................................................................................3-18
Connecting a UTP Cable Segment to RJ45 Port .................................................................3-20
Four-Wire Crossover Cable RJ45 Pinouts for 10/100BASE-TX ..........................................3-21
Four-Wire Straight-Through Cable RJ45 Pinouts for 10/100BASE-TX................................3-21
Eight-Wire Crossover Cable RJ45 Pinouts for 1000BASE-TX.............................................3-21
Eight-Wire Straight-Through Cable RJ45 Pinouts for 1000BASE-TX ..................................3-22
Mini-GBIC with RJ45 Connector ..........................................................................................3-24
Mini-GBIC with MT-RJ Connector........................................................................................3-25
Mini-GBIC with LC Connector ..............................................................................................3-26
Cable Connection to MT-RJ Multimode Fiber-Optic Connectors .........................................3-29
Cable Connection to LC Fiber-Optic Connectors.................................................................3-31
LANVIEW LEDs of A2H124-24P............................................................................................4-2
LANVIEW LEDs of A2H124-48P............................................................................................4-2
Reset Password Switch .........................................................................................................4-9
Console Port Pinout Assignments......................................................................................... A-7

Tables
1-1
1-2
3-1
4-1
4-2
A-1
A-2
A-3
A-4
A-5
A-6
A-7
A-8
A-9
A-10

Power Device Classifications .................................................................................................1-5
Description of Mini-GBICs......................................................................................................1-5
Contents of Switch Carton .....................................................................................................3-2
LANVIEW LEDs .....................................................................................................................4-3
Troubleshooting Checklist......................................................................................................4-7
A2H124-24P Switch Specifications....................................................................................... A-1
A2H124-48P Switch Specifications....................................................................................... A-3
Mini-GBIC Input/Output Port Specifications .......................................................................... A-4
MGBIC-LC01/MGBIC-MT01 Optical Specifications .............................................................. A-4
MGBIC-LC01/MGBIC-MT01 Operating Range ..................................................................... A-5
MGBIC-LC03 Optical Specifications ..................................................................................... A-5
MGBIC-LC03 Operating Range ............................................................................................ A-5
MGBIC-LC09 Optical Specifications ..................................................................................... A-6
MGBIC-LC09 Operating Range ............................................................................................ A-6
MGBIC-08 Optical Specifications.......................................................................................... A-6
xiii

A-11
A-12
A-13

xiv

MGBIC-08 Operating Range................................................................................................. A-6
MGBIC-02 Specifications ...................................................................................................... A-7
Compliance Standards.......................................................................................................... A-8

About This Guide
This guide provides an overview, installation and troubleshooting instructions, and
specifications for the Enterasys® SecureStack A2H124‐24P and A2H124‐48P stackable
Ethernet switches.
For information about the Command Line Interface (CLI) set of commands used to
configure and manage the switches, refer to the Enterasys Networks® SecureStack A2
Configuration Guide.
Note: In this guide, the following terms are used:
• Switch refers to all switches (A2H124-24P and A2H124-48P) unless otherwise noted.
• MGBIC (Mini-Gigabit Interface Card) refers to optional small form pluggable (SFP)
interface modules that plug into the fixed front panel MGBIC slots.
• PoE refers to Power over Ethernet (IEEE 802.3af).
• PD (Powered Device) Device that receives power from the transmission line.

Important Notice
Depending on the firmware version used in the A2H124-24P and A2H124-48P switches, some
features described in this document may not be supported. Refer to the Release Notes shipped with
the SecureStack A2 to determine which features are supported.

Who Should Use This Guide
This guide is intended for a network administrator responsible for installing and setting
up the stackable switches.
Electrical Hazard: Only qualified personnel should perform installation procedures.
Riesgo Electrico: Solamente personal calificado debe realizar procedimientos de
instalacion.
Elektrischer Gefahrenhinweis: Installationen sollten nur durch ausgebildetes und
qualifiziertes Personal vorgenommen werden.

SecureStack A2 PoE Installation Guide

How to Use This Guide

How to Use This Guide
Read through this guide completely to familiarize yourself with its contents and gain an
understanding of the features and capabilities of the stackable Ethernet switches. A
general knowledge of data communications networks is helpful when setting up the
switches.
This preface provides an overview of this guide and the SecureStack A2 manual set, a
brief summary of each chapter and defines the conventions used throughout this guide.
To locate information concerning various subjects in this guide, refer to the following
table:
For...

Refer to...

An overview of the SecureStack A2 features and
how to obtain technical support

Chapter 1, Introduction

Network requirements that must be met before
installing the SecureStack A2

Chapter 2, Network Requirements

Instructions to install the SecureStack A2 on a flat
surface or in a standard 19-inch rack and
configure the SecureStack A2 in a stacked
configuration

Chapter 3, Hardware Installation

Troubleshooting installation problems and
diagnosing network/operational problems using
the LANVIEW LEDs

Chapter 4, Troubleshooting

Specifications, environmental requirements, and
physical properties of the SecureStack A2 and
optional Mini-GBICs

Appendix A, Specifications

Related Documents
The following documents can help you to set up and manage the switch:
•

SecureStack A2 Configuration Guide describes how to use the Command Line Interface
(CLI) to set up and manage the A2 switches.

•

Cabling Guide provides information concerning network cabling, dB loss, and other
cabling specifications and usage.

The manuals listed above can be obtained from the World Wide Web in Adobe Acrobat
Portable Document Format (PDF) at the following site:
http://www.enterasys.com/support/manuals
Unlike the SecureStack A2 Configuration Guide, the Cabling Guide is not listed
alphabetically on the web site. Instead, it is under the Overview Guides link.
xvi

About This Guide

Conventions Used in This Guide

Conventions Used in This Guide
The following conventions are used in this guide:
Note: Calls the reader’s attention to any item of information that may be of special
importance.
Caution: Contains information essential to avoid damage to the equipment.
Precaución: Contiene información esencial para prevenir dañar el equipo.
Achtung: Verweißt auf wichtige Informationen zum Schutz gegen Beschädigungen.
Electrical Hazard: Warns against an action that could result in personal injury or death
due to an electrical hazard.
Riesgo Electrico: Advierte contra una acción que pudiera resultar en lesión corporal o la
muerte debido a un riesgo eléctrico.
Elektrischer Gefahrenhinweis: Warnung vor sämtlichen Handlungen, die zu Verletzung
von Personen oder Todesfällen – hervorgerufen durch elektrische Spannung – führen
können!
Warning: Warns against an action that could result in personal injury or death.
Advertencia: Advierte contra una acción que pudiera resultar en lesión corporal o la
muerte.
Warhinweis: Warnung vor Handlungen, die zu Verletzung von Personen oder gar
Todesfällen führen können!

SecureStack A2 PoE Installation Guide

xvii

Conventions Used in This Guide

xviii

About This Guide

1
Introduction
This chapter introduces the A2H124‐24P and A2H124‐48P stackable switches.

Important Notice
Depending on the firmware version used in the SecureStack A2, some features described in this
document may not be supported. Refer to the Release Notes shipped with the switch to determine
which features are supported.

For information about...

Refer to page...

Overview

1-2

Connectivity

1-5

Management

1-6

Standards Compatibility

1-6

LANVIEW Diagnostic LEDs

1-7

Getting Help

1-7

SecureStack A2 PoE Installation Guide

1-1

Overview

Overview
The A2H124‐24P and A2H124‐48P are stackable Fast Ethernet switches, which can be
adapted and scaled to help meet your network needs. These switches provide a
management platform and uplink to a network backbone for a stacked group of up to
eight A2 switches. The two built‐in Small Form Pluggable (SFP) interface slots provide
you with the option of installing Mini‐GBICs for 1000BASE‐SX/LX/ELX fiber‐optic
connections and 1000BASE‐T copper connections.
The switches also support the use of a redundant DC power supply to help prevent
downtime due to an internal power supply failure in the switch or AC power source.
You can install the SecureStack A2 on a flat surface or into a standard 19‐inch rack with
user‐supplied mounting hardware, and configure the SecureStack A2 functions using the
WebView™ application, CLI switching commands, and/or SNMP.

A2H124-24P and A2H124-48P
The A2H124‐24P (Figure 1‐1) and A2H124‐48P (Figure 1‐2) have several types of front
panel port connections, which include:
•

RJ45 ports (10/100 Mbps, 100BASE‐T copper ports), 24 on the A2H124‐24P and 48 on
the A2H124‐48P.

•

SFP slots labeled port 27 and 28 on the A2H124‐24P and 51 and 52 on the A2H124‐48P
that provide you with the option of installing Small Form Pluggable (SFP)
Mini‐GBICs for 1000BASE‐SX/LX/ELX fiber‐optic connections and 1000BASE‐T
copper connections.

•

1000BASE‐T RJ45 stack connectors which can be used in a stack configuration as well
as standard switch ports when configured as a stand alone switch.

•

Rear panel Redundant Power Supply connector used to connect to a SecureStack
C2RPS‐POE power supply system using the appropriate cable (C2RPS‐POE cable).
Caution: The A2H124-24P and A2H124-48P are PoE-compliant devices. Do not connect
a SecureStack C2 Redundant Power System (C2RPS-SYS) to the power connector.
Otherwise, damage to the device may result.
Precaución: Los dispositivos A2H124-24P y A2H124-48P cumplen con el estándar PoE
(power over ethernet). No conecte una fuente de poder redundante (RPS) SecureStack
C2 (C2RPS-SYS) al cable de corriente. De lo contrario, el dispositivo puede dañarse.

The 10/100 Mbps fixed front panel ports can operate in either half‐duplex or full‐duplex
mode, as determined by Auto‐Negotiation.

1-2

Introduction

Overview

Note: The 1000BASE-T built-in RJ45 stacking ports 25 and 26 on the A2H124-24P and
ports 49 and 50 on the A2H124-48P can be configured as standard 10/100/1000BASE-T
switch ports, using the command “set switch stackport ” when the unit is
used in standalone mode.

Figure 1-1

A2H124-24P Stackable Switch

Front
1

A2H124-24P
23

25
Console
CPU

MGR
RPS

10 12

ÁÂ

26/Down
27

27
28
2

25/Up

Stack

Å Æ

Back
Redundant Power Supply
DC Line 12V
/13A MAX.

AC LINE
100-240 VAC
50-60 Hz
5.1 A MAX.

MAC ADDRESS

É
Figure 1-2

A2H124-48P Stackable Switch

Front
1

CPU

SERIAL NO.

Å
26

49/Up 50/Down

A2H124-48P

52
51

MGR
RPS

ÁÂ

Stack

Console

Æ Ç À

Back
AC LINE
100-240 VAC
50-60 Hz
1.4 A MAX.

Redundant Power Supply
DC Line 12V
/13A MAX.
MAC ADDRESS

É
1
2
3
4
5

DB9 RS232 Console port connector
Recessed password reset button
Manager and Redundant Power Supply LEDS
RJ45 port status LEDS
RJ45, 10/100 Mbps ports

SERIAL NO.

È
6
7
8
9
10

Stack and MGBIC port status LEDs
RJ45 ports for stack connections
SFP interface slots (Mini-GBICs)
C2RPS-POE connection
AC power input connector

SecureStack A2 PoE Installation Guide

1-3

PoE (Power over Ethernet) Support

Stack Connections
The switches have front‐panel RJ45 connectors for connections in a stack configuration.
The stacking cables used for the connections are standard Category 5 or better UTP cable.

Redundant Power Supply Capability
The SecureStack A2 has power supply redundancy capability when connected to an
optional external redundant power supply (RPS). If the internal power supply fails, the
RPS assumes the entire load of the SecureStack A2 without interrupting network traffic.
The internal power supply and RPS each have their own AC power connection, which
enables the connection of each power supply to a different AC power circuit for
additional AC power source redundancy.

PoE (Power over Ethernet) Support
The switch is 802.3af compliant, which means it can provide power over Ethernet cable
connections from its RJ45 front panel connectors to PDs (powered devices) in the network.
Power over Ethernet (PoE) refers to the ability to provide 48 Vdc power to a powered
device using the same Ethernet cabling that provides data. Modern Ethernet
implementations employ differential signals over twisted pair cables. This requires a
minimum of two twisted pairs for a single physical link. Both ends of the cable are
isolated with transformers blocking any DC or common mode voltage on the signal pair.
PoE exploits this fact by using two twisted pairs as the two conductors to supply a direct
current. One pair carries the power supply current and the other pair provides a path for
the return current. While several proprietary legacy implementations of PoE have been
deployed by LAN equipment vendors, in 2003 the IEEE published the IEEE 802.3af‐2003
specification, which is part of the 802.3 suite of standards.
The switch is fully compliant with the IEEE 802.3af standard. It supports the standard
resistor‐based detection method, as well as AC disconnect capability. The switch can
provide up to 360 watts of PoE power and is capable of supplying a maximum of 15.4
watts to any 10/100 port. In addition it is capable of providing 7.5 watts of power to all
ports simultaneously.
Each PD has a PDC (Powered Device Classification) that is transmitted to the switch for
power management purposes. Table 1‐1 lists the classifications and the associated power
ranges.

1-4

Introduction

Connectivity

Table 1-1

Power Device Classifications
Class

Usage

PD Maximum Power Rang
Usage

None

Default

0.44 to 12.95 Watts

Optional

0.44 to 3.84

Optional

3.84 to 6.49 Watts

Optional

6.49 to 12.49 Watts

Not Allowed

Reserved for Future Use

Connectivity
The SecureStack A2 connects to Ethernet networks or workstations via the fixed front
panel RJ45 connectors and two uplink ports that support optional Mini‐GBICs.
At the time of this printing, the Mini‐GBICs that are available from Enterasys and
supported by A2 switches are described in Table 1‐2. These Mini‐GBICs meet or exceed
the IEEE 802.3z‐1998 standard.
Table 1-2

Description of Mini-GBICs

Mini-GBIC

Specification

MGBIC-LC01

Provides one 1000BASE-SX compliant LC fiber-optic multimode port and a
standard LC connector. For optical and operating range specifications, refer to
“MGBIC-LC01/MGBIC-MT01 Specifications (1000BASE-SX)” on page A-4.

MGBIC-LC03

Provides one 1000BASE-SX Long Haul LC fiber-optic multimode port with a
standard LC duplex connector. For optical and operating range specifications,
refer to “MGBIC-LC03 Specifications (1000BASE-SX)” on page A-5.

MGBIC-LC09

Provides one 1000BASE-LX compliant LC fiber-optic single-mode port with a
standard LC connector. For optical and operating range specifications, refer to
“MGBIC-LC09 Specifications (1000BASE-LX)” on page A-6.

MGBIC-MT01

Provides one 1000BASE-SX compliant LC fiber-optic multimode port with a
standard MT-RJ connector. For optical and operating range specifications, refer
to “MGBIC-LC01/MGBIC-MT01 Specifications (1000BASE-SX)” on page A-4.

MGBIC-08

Provides one 1000BASE-ELX compliant LC fiber-optic single-mode port with a
standard LC connector. For optical and operating range specifications, refer to
“MGBIC-08 Specifications (1000BASE-ELX)” on page A-6.

MGBIC-02

Provides one RJ45 copper connection that is compliant with the 1000BASE-T
standard RJ45 connector. For operating range specifications, refer to
“MGBIC-02 Specifications (1000BASE-T)” on page A-7.

SecureStack A2 PoE Installation Guide

1-5

Management

Management
Management of the module can be either in‐band or out‐of‐band. In‐band remote
management is possible using Telnet, Enterasys Networks’ NetSight® management
application, or the WebView application. Out‐of‐band management is provided through
the DB9 Console port connector on the front panel using a VT100 terminal or a VT100
terminal emulator.

Switch Configuration Using WebView
Enterasys Networks’ HTTP‐based Web management application (WebView) is an
intuitive web tool for simple management tasks.

Switch Configuration Using CLI Commands
The CLI commands enable you to perform more complete SecureStack A2 configuration
management tasks.
For CLI command set information and how to configure the module, refer to the
SecureStack A2 Configuration Guide.

Standards Compatibility
The 100BASE‐T ports are compliant with the following standards and operations:
•

IEEE 802.3

•

IEEE 802.3u

•

IEEE 802.3ab (Stack Ports)

•

IEEE 802.3ad

•

IEEE 802.3af

•

Full‐Duplex operation

In addition to the above standards, the SFP ports are compliant with the following
standards and operations:

1-6

Introduction

•

IEEE 802.3z

•

IEEE 802.3x Flow Control support for Full‐Duplex mode

•

Auto‐negotiation for Full‐Duplex control operations

LANVIEW Diagnostic LEDs

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.

Getting Help
For additional support related to the SecureStack A2 or this document, contact
Enterasys Networks using one of the following methods:
World Wide Web

www.enterasys.com/services/support/

Phone

1-800-872-8440 (toll-free in U.S. and Canada)
or 1-978-684-1000
For the Enterasys Networks Support toll-free number in your country:
www.enterasys.com/services/support/contact/

Internet mail

support@enterasys.com
To expedite your message, type [Switching] in the subject line.

To send comments concerning this document to the Technical Publications Department:
techpubs@enterasys.com
Please include the document Part Number in your email message.

Before contacting Enterasys Networks for technical support, have the following
information ready:
•

Your Enterasys Networks service contract number.

•

A description of the failure.

•

A description of any action(s) already taken to resolve the problem (for example,
changing mode or rebooting the unit.)

•

The serial and revision numbers of all involved Enterasys Networks products in the
network.

•

A description of your network environment (for example, layout and cable type)

•

Network load and frame size at the time of trouble, if known.

•

The device history (that is, have you returned the device before, is this a recurring
problem?)

•

Any previous Return Material Authorization (RMA) numbers.

SecureStack A2 PoE Installation Guide

1-7

Getting Help

1-8

Introduction

2
Network Requirements
Before installing the device, review the requirements and specifications in this chapter
concerning the following:
For information about...

Refer to page...

10BASE-T Network

2-1

100BASE-TX Network

2-2

1000BASE-FX Network

2-2

1000BASE-T Network

2-2

Note: The network installation must meet the requirements described in this chapter to
ensure satisfactory performance of this equipment. Failure to do so will produce poor
network performance.
Note: The SecureStack A2 Configuration Guide and the Cabling Guide referred to in the
following sections can be found on the Enterasys Networks World Wide Web site:
http://www.enterasys.com/support/manuals
For details about obtaining the manuals, refer to “Related Documents” on page xvi.

10BASE-T Network
When connecting a 10BASE‐TX segment to one of the RJ45 fixed ports (1 through 24 on
A2H124‐24P, 1 through 48 on A2H124‐48P), ensure that the network meets the Ethernet
network requirements of the IEEE 802.3‐2002 standard for 10BASE‐TX. Refer to the
Cabling Guide for details.
Note: If an RJ45 port is to operate at 100 Mbps, Category 5 cabling must be used.
Category 3 cabling does not meet the 100 Mbps specifications. Refer to 100BASE-TX
Network (page 2-2) for information about 100BASE-TX networks and cabling.

SecureStack A2 PoE Installation Guide

2-1

100BASE-TX Network

100BASE-TX Network
When connecting a 100BASE‐TX segment to one of the fixed ports (1 through 24 on
A2H124‐24P, 1 through 48 on A2H124‐48P) use Category 5 UTP cabling. The device at the
other end of the twisted pair segment must meet IEEE 802.3‐2002 100BASE‐TX Fast
Ethernet network requirements for the SecureStack A2 to operate at 100 Mbps.
Note: When using the RJ45 ports on the SecureStack A2 for 100 Mbps operation use
Category 5 UTP cabling with an impedance between 85 and 111 ohms.
The fixed SecureStack A2 ports are capable of operating at 10 and 100 Mbps. This is
accomplished by the SecureStack A2 when Auto-Negotiation is enabled. This enables the
SecureStack A2 to automatically sense the transmission speed of the other device and
adjust for the speed accordingly.

1000BASE-FX Network
The Mini‐GBIC port sockets (27 and 28 on A2H124‐24P; 51 and 52 on A2H124‐48P) enable
you to vary the type of 1‐Gbps port connection. At the printing of this document there
were six supported Mini‐GBICs available, as follows:
•

MGBIC‐LC01 for a 1000BASE‐SX compliant LC fiber‐optic multimode connection

•

MGBIC‐LC03 for a 1000BASE‐SX Long Haul LC fiber‐optic multimode connection

•

MGBIC‐LC09 for a 1000BASE‐LX compliant LC fiber‐optic single‐mode connection

•

MGBIC‐MT01 for a 1000BASE‐SX compliant MT‐RJ fiber‐optic single‐mode
connection

•

MGBIC‐08 for a 1000BASE‐ELX compliant LC fiber‐optic single‐mode connection

•

MCBIC‐02 for a 1000BASE‐T compliant RJ45 copper connection

The device at the other end of the fiber connection must meet the same Gigabit Ethernet
requirements for the connected devices to operate at 1‐Gigabit speed.

1000BASE-T Network
The RJ45 fixed front panel stacking port connectors support RJ45 copper 1000BASE‐T
compliant connections. When connecting a 1000BASE‐T segment to one of the RJ45 fixed
ports use Category 5 UTP cabling. In standalone mode, the stack ports may be user
configured to serve as a standard switch port, allowing Gigabit uplink to the network. The
device at the other end of the twisted pair segment must meet IEEE 802.3‐2002
1000BASE‐T Gigabit Ethernet network requirements for the devices to operate at
1000 Mbps.

2-2

Network Requirements

3
Hardware Installation
Electrical Hazard: Only qualified personnel should perform installation procedures.
Riesgo Electrico: Solamente personal calificado debe realizar procedimientos de
instalacion.
Elektrischer Gefahrenhinweis: Installationen sollten nur durch ausgebildetes und
qualifiziertes Personal vorgenommen werden.

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

This chapter provides instructions to install the A2H124‐24P and A2H124‐48P. Unless
otherwise noted, the instructions apply to all switches. Follow the order of the sections
listed below to correctly install the switch.
For information about...

Refer to page...

Considerations Prior to Installation

3-2

Required Tools

3-2

Unpacking the Switch

3-2

Installing the Switch on a Flat Surface

3-3

Connecting Stacking Cables

3-7

Configuring Switches in a Stack

3-9

Connecting AC and PoE Power

3-12

Connecting to Console Port for Local Management

3-14

Connecting to the Network

3-19

Installing Optional Mini-GBICs

3-22

Completing the Installation

3-32

SecureStack A2 PoE Installation Guide

3-1

Considerations Prior to Installation

Considerations Prior to Installation
When installing the switch, note the following:
•

Before starting the installation procedure, notify the network administrator of the
installation.

•

Follow the installation procedures in the order as presented in this guide.

•

Do not connect the switch to the network until you have established the correct IP
address.

Required Tools
A Phillips screwdriver is required to install the switch into a rack.

Unpacking the Switch
Unpack the switch as follows:
1.

Open the box and remove the packing material protecting the switch.

Verify that the contents of the carton contains the items listed in Table 3‐1.

Table 3-1

Contents of Switch Carton

Item

3-2

Quantity

A2H124-24P or A2H124-48P switch

Mounting kit (two mounting brackets and eight M3x6-mm screws for rack mounting)

Rubber feet with adhesive backing for installation on a flat surface

AC power cord (The type of power cord is country dependent.)

This installation guide

Customer Release Notes

URL notice card

Remove the tape seal on the non‐conductive bag to remove the switch.

Perform a visual inspection of the switch for any signs of physical damage. Contact
Enterasys Networks if there are any signs of damage. Refer to “Getting Help” on
page 1‐7 for details.

Hardware Installation

Installing the Switch on a Flat Surface

Installing the Switch on a Flat Surface
When installing the switch on a flat surface, the installation of the rubber feet is
recommended to prevent the switch from sliding on a flat surface. Installing the rubber
feet is optional if you are installing the switch in a rack. To install the rubber feet, proceed
to “Installing the Rubber Feet” instructions below. For instructions to rack mount the
switch, proceed to “Rack Mounting the Switch” on page 3‐6.

Installing the Rubber Feet
To install the rubber feet, refer to Figure 3‐1 and proceed as follows:
1.

Place the switch on its back on a sturdy flat surface to gain access to the bottom of the
chassis.

Remove the four rubber feet from their plastic bag in the shipping box.

Locate the four marked locations on the bottom four corners of the chassis.

Remove the protective strip from the back of one rubber foot and position it on a
marked location and press firmly into place. Repeat this procedure to install the
remaining three rubber feet in the other three locations.

After installing the rubber feet, return the switch to its upright position.

Proceed to “Guidelines for Flat Surface Installation” on page 3‐5. For a rackmount
installation, proceed to “Rack Mounting the Switch” on page 3‐6.

SecureStack A2 PoE Installation Guide

3-3

Installing the Switch on a Flat Surface

Figure 3-1

Chassis Bottom, Rubber Feet Placement

1 Bottom of chassis as seen when chassis is
3 Rubber feet with adhesive backing
resting on its back
(four)
2 Locations to install the rubber feet (four locations)
Note: If a number of switches are being installed in a stack, repeat steps 1 through 4 to
install the rubber feet on each switch before continuing with the installation.

3-4

Hardware Installation

Installing the Switch on a Flat Surface

Guidelines for Flat Surface Installation
Locate the switch within 152 cm (5 ft) of its power source and on a surface as shown in
Figure 3‐2. If an optional redundant power system is going to be installed and connected
to the 14‐pin Redundant Power Supply input connector on the rear of the switch, refer to
the installation guide shipped with the redundant power system.
Caution: To ensure proper ventilation and prevent overheating, leave a minimum
clearance space of 5.1 cm (2.0 in.) at the left, right, and rear of the switch.
Do not connect the switch to the AC power source until instructed to do so later in the
installation process.
Precaución: Para asegurar una buena ventilación y evitar que el sistema se
sobrecaliente, deje un espacio mínimo de 5.1 cm (2 pulgadas) con respecto a los lados y
a la parte posterior del aparato.
No conecte el dipositivo a la fuente primaria hasta que no se le indique.

If you are installing several switches in a stack, proceed to “Connecting Stacking Cables”
on page 3‐7. If the switch is being installed as a standalone switch, proceed to “Connecting
AC and PoE Power” on page 3‐12 for power connection instructions.
Figure 3-2

Area Guidelines for Switch Installation on Flat Surface

A2H124-24
23

25
Console
CPU

MGR
RPS

10 12

25/Up

26/Down
27

26
27
28
2

Stack

Ã
Â
1 Approximately 152 cm (5 ft) from power source
2 4.45 cm (1.75 in.) per switch. (Vertical clearance
depends on number of switches stacked.)

3 44.5 cm (19.4 in.) for proper ventilation
4 41.9 cm (16.5 in.) for proper ventilation

SecureStack A2 PoE Installation Guide

3-5

Rack Mounting the Switch

Rack Mounting the Switch
To install the switch in a 19‐inch rack, you need:
•

Two rackmount brackets and mounting screws (rackmount kit) shipped with the
switch.

•

Four user‐supplied screws to attach the switch to a standard 19‐inch rack.

Guidelines for Rackmount Installation
The installation site must be within reach of the network cabling and meet the
requirements listed below:
•

Appropriate grounded power receptacles must be located within 152 cm (5 ft) of the
location.

•

A temperature of between 0°C (32°F) and 40°C (104°F) must be maintained at the
installation site with fluctuations of less than 10°C (18°F) per hour.
Note: To ensure proper ventilation and prevent overheating, leave a minimum clearance
space of 5.1 cm (2.0 in.) at the left, right, and rear of the switch.
Warning: Before rack-mounting the switch, ensure that the rack can support it without
compromising stability. Otherwise, personal injury and/or equipment damage may result.
Advertencia: Antes de montar el equipo en el rack, asegurarse que el rack puede
soportar su peso sin comprometer su propia estabilidad, de otra forma, daño personal o
del equipo puede ocurrir.
Warnhinweis: Überzeugen Sie sich vor dem Einbau des Gerätes in das Rack von dessen
Stabilität, ansonsten könnten Personenschäden oder Schäden am Gerät die Folge sein.

Attaching Brackets and Installing in Rack
Proceed as follows to install the switch into a 19‐inch rack:
1.

Attach the rackmount brackets to the switch, as shown in Figure 3‐3, using the eight
M3x6 mm flathead screws shipped with the switch.

Figure 3-3

Attaching the Rackmount Brackets

A2H124-24P
23

25
Console
CPU

MGR
RPS

10 12

Hardware Installation

24
12

Stack

1 Rackmount brackets
3-6

26/Down

25/Up

À
2 M3x6 mm flathead screws

Connecting Stacking Cables

With the mounting brackets attached, position the switch between the vertical frame
members of the 19‐inch rack as shown in Figure 3‐4. Then fasten the switch securely
to the frame using four mounting screws (user supplied).

Figure 3-4

Fastening the Switch to the Rack

A2H124-24P
23

25
Console
CPU

MGR
RPS

10 12

26/Down
27

27
28
2

Á
À
1 Rails of 19-inch rack

25/Up

Stack

2 Mounting screws (supplied by user)

If you are installing this switch in a stacked configuration, repeat this procedure for
each switch until all switches have been installed in the stack, then proceed to
“Connecting Stacking Cables” on page 3‐7. Otherwise, proceed to “Connecting AC
and PoE Power” on page 3‐12.

Connecting Stacking Cables
The stack of switches can be connected in a closed loop or daisy chained. In a closed loop
all the switches are connected in sequence and the last switch in the stack is connected
back to the first switch. In the daisy chain configuration the cable that would return the
connection back to the first switch in a closed loop is not installed. The advantage of the
closed loop is redundancy, this configuration eliminates any single point of failure. Up to
eight switches can be stacked together and connected by standard UTP Category 5 or
better cables. You can add switches and reach up to a maximum of 384 fixed front panel
ports and 16 SFP ports for a total of 400 Ethernet ports per stack. The stacking cables allow
the entire stack to operate with a single IP address.
Figure 3‐5 shows an example of a four‐high stack connected in a closed loop
configuration. All STACK DOWN and STACK UP connectors are used in the installation.
The stacking cable connections are from the STACK DOWN connector of one switch to
the STACK UP connector of the next switch up in the stack. A stacking cable connection
from the STACK DOWN connector of the switch at the top of the stack to the STACK UP
connector at the bottom of the stack closes the loop. In a daisy chain topology, one cable
connection is not made.

SecureStack A2 PoE Installation Guide

3-7

Connecting Stacking Cables

Figure 3-5

Stacking Cable Connections

Ã Â
1

A2H124-24P
23

25
Console
CPU

MGR
RPS

10 12

25/Up

26/Down
27

28
2

Stack

Â
1

A2H124-24P
23

25
Console
CPU

MGR
RPS

10 12

25/Up

26/Down
27

24
12

Stack

Á
1

A2H124-24P

Console

RPS

10 12

MGR

25/Up

26/Down
27

28
12

Stack

Á
1

A2H124-24P

Console

RPS

10 12

25/Up

26/Down
27

27
28
2

Stack

Á
1
2
3

MGR

CPU

Category 5 or better UTP cable
STACK UP connector
STACK DOWN connector

4
5

STACK UP connector at top of stack
STACK DOWN connector at bottom of stack

After connecting the cables to the stacking ports, proceed to “Configuring Switches in a
Stack” on page 3‐9 for instructions.

3-8

Hardware Installation

Configuring Switches in a Stack

Configuring Switches in a Stack
The information in the following sections is important to understand A2 switch operation
and installations in a stack installation.

About SecureStack A2 Switch Operation in a Stack
The SecureStack A2 products are stackable switches that can be adapted and scaled to
help meet your network needs. These switches provide a management platform and
uplink to a network backbone for a stacked group of up to eight A2 switches.
Once installed in a stack, the switches behave and perform as a single switch. As such,
you can start with a single switch and add more switches as your network expands. You
can also mix different products in the same family in a single stack to provide a desired
combination of port types and functions to match the requirements of individual
applications. In all cases, a stack of switches performs as one large product, and is
managed as a single network entity.
When switches are installed and connected as described back in “Connecting Stacking
Cables” on page 3‐7, the following occurs during initialization:
•

The switch that will manage the stack is automatically established and is referred to as
the Manager switch.

•

All other switches are established as Member switches in the stack.

•

The hierarchy of the switches that will assume the function of backup manager is also
determined in case the current manager malfunctions, is powered down, or is
disconnected from the stack.

•

The Console port on the manager switch remains active for out‐of‐band (local) switch
management, but the Console port on each member switch is deactivated. This
enables you to set the IP address and system password using a single Console port.
Now each switch can be configured locally using only the manager’s Console port, or
in‐band using a remote device and the CLI set of commands described in this section.
For procedures used for various types of connections to the Console port, refer to
“Connecting to Console Port for Local Management” on page 3‐14.

Once a stack is created (more than one switch is interconnected), the following occurs:
1.

Switch (unit) IDs are arbitrarily assigned on a first‐come, first‐served basis.

Switch IDs are saved against each module. Then, every time a board is power‐cycled,
it will initialize with the same switch ID. This is important for port‐specific
information (for example: fe.4.12 is the 12th Fast Ethernet port on switch number 4).

SecureStack A2 PoE Installation Guide

3-9

Configuring Switches in a Stack

The management election process uses the following precedence to assign a
management switch:
a.

Previously assigned/elected management switch

Management assigned priority (values 1–15)

Hardware preference level

d. Highest MAC Address

Recommended Procedures for New and Existing Stacks
Important
The following procedures assume that all switches have a clean configuration from manufacturing.
When adding a new switch to an already running stack, it is also assumed that the new switch is
using the same firmware image version as other switches in the stack.

Installing a New Stackable System of Up to Eight Switches
Use the following procedure to install a new stack of up to eight switches out of the box.
Before applying power, make all physical connections with the stack cables as described
in “Connecting Stacking Cables” on page 3‐7.
1.

Once all of the stack cables have been connected, individually power on each switch
from top to bottom (connecting power to a switch is described in “Connecting AC and
PoE Power” on page 3‐12).
If the switches are powered on almost simultaneously, the system will automatically
select the first one that powers up as the Master switch and the others as Member
switches. The switches are assigned unit IDs in the order that they become fully
operational.
You can control the unit ID assignment according to the physical position in a stack.
When you power up each switch and allow it to become fully operational before
applying power to the next switch, the first one becomes the Manager and all the next
switches will join that stack (regardless of Priority, Firmware Revision, or MAC
Address). The switches are assigned unit IDs in the order that you power on each
switch.
Note: Once switch IDs are assigned, they are persistent and will be retained during a
power cycle to any or all of the switches.

3-10

(Optional) If desired, change the management switch using the set switch
movemanagement command as described in the SecureStack A2 Configuration Guide.

Hardware Installation

Configuring Switches in a Stack

Once the desired master switch has been selected, the current configuration will be
saved and the stack will automatically reset. You must now move the console cable to
the new management unit.

Stack members other than the management unit will only identify their unit number
through their console port.

Persistent data on all stack units can be cleared along with the current configuration
using the clear config all as described in the SecureStack A2 Configuration Guide.

Adding a New Switch to an Existing Stack
Use the following procedure to install a new switch to an existing stack configuration.
This procedure assumes that the new switch being added has a clean configuration from
manufacturing and is running the same firmware image version as other switches in the
stack.
1.

Ensure that power is off on the new switch being installed.

Use one of the following methods to complete the stack cable connections:

–

If the running stack uses a daisy chain topology, make the stack cable connections
from the bottom of the stack to the new switch (that is, STACK DOWN port from
the bottom switch of the running stack to the STACK UP port on the new switch).

–

If the running stack uses a closed loop configuration, break the loop and make the
stack cable connections to the new switch to close the loop.

Apply power to the new switch.

Important Considerations About Using Clear Config in a Stack
When using the clear config command (as described in the SecureStack A2 Configuration Guide)
to clear configuration parameters in a stack, it is important to remember the following:
• Use clear config to clear config parameters without clearing stack switch IDs. This command
WILL NOT clear stack parameters and avoids the process of re-numbering the stack.
• Use clear config all when it is necessary to clear all config parameters, including stack switch
IDs and switch priority values.

SecureStack A2 PoE Installation Guide

3-11

Connecting AC and PoE Power

Connecting AC and PoE Power
AC Power
Note: The power supply in the switch has automatic voltage sensing that allows
connection to power sources ranging from 100 to 240 VAC.

To connect a switch to the AC power source, refer to Figure 3‐6 and proceed as follows:
1.

Plug the power cord into the switch AC power connector.

Plug the other end of the power cord into a dedicated grounded AC outlet (not
shown). The type of power outlet and power cord are country‐dependent.
Note: If you plan to connect all the switches quickly to allow automatic Manager selection,
wait until all switches are fully operational before proceeding to the next step.
If you plan to power up each switch and allow it to become fully operational before
applying power to the next switch, proceed to the next step.

Figure 3-6

Switch Rear View (A2H124-48P shown)

AC
10 LIN
0-2
50 40 E
5.1 -60 VAC
Hz
A MA
X.

Re
DCdund
Lin ant
e 12 Po
V wer
Su
/13 pp
ly
A MA
X.

3-12

Hardware Installation

DR
ES
S

RIA
L NO
.

10AC L
0- IN
5 240 E
5.10-60 VAC
A MHz
AX
.

1 AC power cord

MA
C AD

2 AC power connector

3 Connector for external redundant power supply

Connecting AC and PoE Power

Observe the power CPU LED (not shown), located on the front panel. During the
initialization, the CPU LED will start by illuminating solid amber, then start blinking
green, then blinking amber, then blinking green again until the end of the
initialization, and then turns solid green.
Note: If the CPU LED illuminates solid red, there was a critical failure. For more
information about the LED indications and troubleshooting, refer to Chapter 4. If you need
additional help, contact Enterasys Networks. Refer to “Getting Help” on page 1-7 for
details.

If the switch is a standalone switch, it will take approximately 30 seconds for the
switch to start up. If the switch is a stack Manager, it can take up to 3 minutes or more
to start up, depending on the number of Member switches in the stack.

C2RPS-PoE Redundant Power System
If you are installing an optional redundant power system (C2RPS‐POE), refer to the
installation instructions supplied with the SecureStack C2RPS‐POE. The switch is
connected to a C2RPS‐POE using a C2RPS‐POE Cable.
Figure 3-7

Accessing the RPS connector

MA
C

RIA

Re
DCdund
Lin ant
e 1 Po
2V we
rS
/13 upp
A M ly
AX
.

Â
Â
Á
Á
1
2

RPS coverplate
Retaining screws to fasten plate

À
3

Screw holes for coverplate

SecureStack A2 PoE Installation Guide

3-13

Connecting to Console Port for Local Management

Caution: To prevent damaging the switch, ONLY connect a Power over
Ethernet-compliant Redundant Power System (C2RPS-POE) to the redundant power
supply connector. The switch is only compatible with the SecureStack C2RPS-POE
redundant power supply system.
Precaución: Conecte una fuente de poder redundante (RPS) SecureStack PoE (C2RPSPOE) al cable de corriente. De lo contrario, el dispositivo puede dañarse.

If you are installing the switch as a standalone switch, proceed to “Connecting to Console
Port for Local Management” on page 3‐14. If you are installing switches in a stack
configuration, apply power to each switch in order, according to the procedure you use in
“Configuring Switches in a Stack” on page 3‐9.

Stack Initialization Overview
When you install and connect all the stacking cables to the switches in the stack before
applying power to the switches, the following occurs:
•

The switch that will manage (Manager) the stack is automatically established with all
other switches established as Member switches in the stack. When the switches
complete their initializations, one of the switches in the stack will illuminate its
Manager LED, indicating that it is the stack Manager. The Manager LED on each
Member switch will be off.

•

The hierarchy of the switches that will function as backup Manager is also determined
in case the current Manager malfunctions, is powered down, or is disconnected from
the stack.

•

The Console port on each Member switch will provide only the unit number. Only the
Console port on the Manager switch is active and provides a CLI for out‐of band
configuration to set the IP address, password, and other settings.

Once you know which switch is the Manager, proceed to “Connecting to Console Port for
Local Management” on page 3‐14.

Connecting to Console Port for Local Management
This section describes how to connect an RS232 DTE interface cable from a PC, a VT series
terminal, or a modem to an A2H124‐24P or A2H124‐48P for out‐of‐band sessions using
CLI commands.
Note: When switches are connected in a stack configuration and all stacking cables are
connected before powering up the switches, one switch in the stack will be automatically
designated as the Manager of the stack and its Console port will remain active. All other
switches will become Member switches and their Console ports will be deactivated.

3-14

Hardware Installation

Connecting to Console Port for Local Management

What Is Needed
The following is a list of user‐supplied DTE interface cables that may be needed to connect
the DB9 male Console port connector on the switch. The cables are terminated by a DB9
female connector at one end, and by one of three type connectors at the other end,
depending on the type connection needed for the remote device. The cables that may be
needed are as follows:
•

DB9 female‐to‐DB9 female

•

DB9 female‐to‐DB25 female

•

DB9 female‐to‐DB25 male

Using a DTE modem DB9 female‐to‐DB9 female cable, you can connect products
equipped with a DB9 DTE male console port to an IBM or compatible PC running a VT
series emulation software package.
Using a DTE modem DB9 female‐to‐DB25 female cable, you can connect products
equipped with a DB9 DTE male console port to a VT series terminal or VT type terminals
running emulation programs for the VT series.
Using a DTE modem DB9 female‐to‐DB25 male cable, you can connect products equipped
with a DB9 DTE male console port to a Hayes compatible modem that supports
9600 baud.
The cable used must connect the Console port Received Data, Pin 2 to the Transmitted
Data pin at the other end of the cable. The connection from the Console port Transmitted
Data, Pin 3 must be connected to the Received Data pin cable connection at the other end
of the cable. The DB9 Console port pin assignments are shown in Figure 3‐8.
Figure 3-8

DB9 Male Console Port Pinout Assignments

3
5

2
1

1
2
3

Pin 2, Received Data (input)
Pin 3, Transmitted Data (output)
Pin 5, Signal Ground
All other pins not connected.

SecureStack A2 PoE Installation Guide

3-15

Connecting to Console Port for Local Management

Connecting to an IBM or Compatible Device
To connect an IBM PC or compatible device, running the VT terminal emulation, to an
Enterasys switch Console port (Figure 3‐9), proceed as follows:
1.

Connect the DB9 female connector at one end of the cable (not supplied) to the
Console port on the Enterasys switch. (If there is a switch designated as the Manager,
connect to its Console port.)

Plug the DB9 female connector at the other end of cable into the communications port
on the PC.

Turn on the PC and configure your VT emulation package with the following
parameters:
Parameter

Setting

Mode

7 Bit Control

Transmit

Transmit=9600

Bits Parity

8 Bits, No Parity

Stop Bit

1 Stop Bit

When these parameters are set, the Startup screen will display. Proceed to “Connecting to
the Network” on page 3‐19.
Figure 3-9

Connecting an IBM PC or Compatible

1 DB9 female connector
2 Serial interface cable
3 DB9 male Console port connector

3-16

Hardware Installation

ole

4 DB9 female connector
5 PC with VT emulation application

Connecting to Console Port for Local Management

Connecting to a VT Series Terminal
To connect a VT Series terminal to an Enterasys switch Console port (Figure 3‐10), use a
UTP serial interface cable terminated with a DB9 female connector and a DB25 female
connector and proceed as follows:
1.

Connect the DB9 female connector at one end of cable to the Console port DB9 male
connector on the Enterasys switch. (If there is a switch designated as the Manager,
connect to its Console port.)

Plug the DB25 female connector at the other end of the cable into the port labeled
COMM on the VT terminal.

Turn on the terminal and access the Setup Directory. Set the following parameters on
your terminal:
Parameter

Setting

Mode

7 Bit Control

Transmit

Transmit=9600

Bits Parity

8 Bits, No Parity

Stop Bit

1 Stop Bit

When these parameters are set, the Startup screen will display. Proceed to “Connecting to
the Network” on page 3‐19.
Figure 3-10

Connecting a VT Series Terminal

1 DB9 female connector
2 Serial interface cable
3 DB9 male Console port connector

ole

4 DB25 female connector
5 PC with VT emulation application

SecureStack A2 PoE Installation Guide

3-17

Connecting to Console Port for Local Management

Connecting to a Modem
To connect a modem to an Enterasys Networks switch console port (Figure 3‐11), use a
UTP cable terminated with a DB9 female connector and a DB25 male connector, and
proceed as follows:
1.

Connect the DB9 female connector at one end of the cable to the Console port DB9
connector on the Enterasys switch. (If there is a switch designated as the Manager,
connect to its Console port.)

Plug the DB25 male connector at the other end of the cable into the modem
communications port.

Turn on the modem and make sure the remote modem is ON.

With your PC connected to the remote modem, configure your VT emulation package
with the following parameters:
Parameter

Setting

Mode

7 Bit Control

Transmit

Transmit=9600

Bits Parity

8 Bits, No Parity

Stop Bit

1 Stop Bit

When these parameters are set, the Startup screen will display. If the switches are in a
stacked configuration, proceed to “Connecting to the Network” on page 3‐19.
Figure 3-11

Connecting to a Modem

1 DB9 female cable connector
2 Serial interface cable
3 DB9 male Console port

3-18

Hardware Installation

Ä
4
5
6

DB25 male connector
Local modem
Remote modem

ole

7 PC with VT emulation application

Connecting to the Network

Connecting to the Network
The following procedures cover the cable connections from the network or other devices
to the switch RJ45 ports or any installed optional Mini‐GBIC.
•

Connecting UTP Cables on page 3‐19

•

Connecting Fiber‐Optic Cables to MT‐RJ Ports on page 3‐27

•

Connecting Fiber‐Optic Cables to LC Ports on page 3‐30

Connecting UTP Cables
The fixed RJ45 front panel ports are 10/100 Mbps ports and have auto polarity detect.
When connecting a workstation to these ports, use a straight‐through cable. When
connecting networking devices to these ports, such as a bridge, repeater, or router, it is not
necessary to use a crossover cable.
Note: All fixed RJ45 front panel ports support Category 5 Unshielded Twisted Pair (UTP)
cabling with an impedance between 85 and 111 ohms. Category 3 cable may be used if
the connection is going to be used only for 10 Mbps.

To connect twisted pair segments to the switch, refer to Figure 3‐12 and proceed as
follows:
1.

Ensure that the device to be connected at the other end of the segment is
powered ON.

Connect the twisted pair segment to the switch by inserting the RJ45 connector on the
twisted pair segment into the desired RJ45 port (for example, Port 8).

SecureStack A2 PoE Installation Guide

3-19

Connecting to the Network

Figure 3-12

Connecting a UTP Cable Segment to RJ45 Port

1 1
15

2
17

3
19

4
5

6
7

8
2

9
10
11
12
11

RJ45 connector

2 Port 8

3 Port 8 Link/Activity LED

Verify that a link exists by checking that the Link/Activity LED is ON (solid green or
blinking green).
Note: If the cable is connected to one of the PoE RJ45 front panel ports, solid green or
blinking green also indicates that PoE power is available. If the LED is solid amber or
blinking amber PoE power failed. For more details, refer to Chapter 4.

If the Link/Activity LED is OFF, perform the following steps until it is on:
a.

Verify that the cabling being used is Category 5 or better with an impedance
between 85 and 111 ohms with a maximum length of 100 meters (328 feet).

Verify that the device at the other end of the twisted pair segment is on and
properly connected to the segment.

Verify that the RJ45 connectors on the twisted pair segment have the proper
pinouts and check the cable for continuity. Typically, a crossover cable is used
between hub devices but this is not necessary. A straight‐through cable can be
used to connect between the switch and any device. Refer to Figure 3‐13 and
Figure 3‐14 for four‐wire RJ45 connections. Refer to Figure 3‐15 and Figure 3‐16
for eight‐wire RJ45 connections.

d. Ensure that the twisted pair connection meets the dB loss and cable specifications
outlined in the Cabling Guide. Refer to “Related Documents” on page xvi for
information on obtaining this document.
5.

If a link is not established, contact Enterasys Networks. Refer to “Getting Help” on
page 1‐7 for details.

Repeat all steps above until all connections have been made.
3-20

Hardware Installation

Connecting to the Network

Figure 3-13

Figure 3-14

Figure 3-15

Four-Wire Crossover Cable RJ45 Pinouts for 10/100BASE-TX

MDI

MDI-X

RX+

TX+

Four-Wire Straight-Through Cable RJ45 Pinouts for 10/100BASE-TX

MDI

MDI-X

RX+

TX+

RX+

Eight-Wire Crossover Cable RJ45 Pinouts for 1000BASE-TX

MDI

TX1+

RX1-

TX2+

TX3+

RX3-

RX2-

TX4+

RX4-

SecureStack A2 PoE Installation Guide

3-21

Installing Optional Mini-GBICs

Figure 3-16

Eight-Wire Straight-Through Cable RJ45 Pinouts for 1000BASE-TX

MDI

MDI-X

TX1+

TX2+

RX1-

RX2-

TX2+

TX1+

TX3+

TX4+

RX3-

RX4-

RX2-

RX1-

TX4+

TX3+

RX4-

RX3-

Installing Optional Mini-GBICs
This section describes how to install Mini‐GBICs in any of the SFP port slots (27 and 28 of
A2H124‐24P; 51 and 52 of A2H124‐48P). It is recommended that the options be installed
first in a new installation.
Warning: Fiber-optic Mini-GBICs use Class 1 lasers. Do not use optical instruments to
view the laser output. The use of optical instruments to view laser output increases eye
hazard. When viewing the output optical port, power must be removed from the network
adapter.
Advertencia: Los Mini-GBICS de fibra optica usan lasers de clase 1. No se debe usar
instrumentos opticos para ver la potencia laser. El uso de los instrumentos opticos para
ver la potencia laser incrementa el riesgo a los ojos. Cuando vean el puerto de la potencia
optica, la corriente debe ser removida del adaptador de la red.
Warnhinweis: Mini-GBICs mit Fiber-Optik Technologie benutzen Laser der Klasse 1.
Benutzen sie keinesfalls optische Hilfsmittel, um die Funktion des Lasers zu überprüfen.
Solche Hilfsmittel erhöhen die Gefahr von Sehschäden. Wenn sie den optischen Port
überprüfen möchten stellen Sie sicher, dass die Komponente von der
Spannungsversorgung getrennt ist.

3-22

Hardware Installation

Installing Optional Mini-GBICs

Caution: Carefully follow the instructions in this manual to avoid damaging the
Mini-GBIC and the device.
The Mini-GBIC and the device are sensitive to static discharges. Use an antistatic wrist
strap and observe all static precautions during this procedure. Failure to do so could result
in damage to the Mini-GBIC or the switch. Always leave the Mini-GBIC in the antistatic bag
or an equivalent antistatic container when not installed.
Precaución: Siga las instrucciones del manual para no dañar el Mini-GBIC ni del aparato,
puesto que son muy sensible a las descargas de electricidad estática. Utilice la pulsera
antiestática y tome todas las precauciones necesarias durante este procedimiento. Si no
lo hace, podría dañar el Mini-GBIC o del aparato. Mientras no esté instalado, mantenga el
Mini-GBIC en su bolsa antiestática o en cualquier otro recipiente antiestático.

Preparation
Before installing the Mini‐GBIC, proceed as follows:
1.

Before removing the Mini‐GBIC from the antistatic packaging, it is recommended that
you use an antistatic wrist strap (not supplied) to prevent damage from static
discharge. To use the wrist strap, refer to the instructions provided with your
antistatic wrist strap.

Remove the Mini‐GBIC from its packaging.

If there is a protective dust cover in the Mini‐GBIC connector, do not remove it at this
time.

Installation
To install a Mini‐GBIC that has an MT‐RJ connector, refer to Figure 3‐18; for a Mini‐GBIC
with an LC connector, refer to Figure 3‐19; for a Mini‐GBIC with an RJ45 connector, refer
to Figure 3‐17; and proceed as follows:
1.

Hold the Mini‐GBIC with the top side positioned as shown, and the 7‐pin edge
connector facing the port slot.

Align the Mini‐GBIC with the port slot.

If you are using the RJ45 Mini‐GBIC as in Figure 3‐17, be sure the release tab is in the
up position.

Push the Mini‐GBIC into the port slot until the Mini‐GBIC “clicks” and locks into
place.

SecureStack A2 PoE Installation Guide

3-23

Installing Optional Mini-GBICs

Figure 3-17

Mini-GBIC with RJ45 Connector

25
26
27

Ã
Á
Â

1 SFP Slot
2 Mini-GBIC (MGBIC-02)

3-24

Hardware Installation

ac
k

ow
n

-24

3 Release tab
4 Link/Activity LED

Installing Optional Mini-GBICs

Figure 3-18

Mini-GBIC with MT-RJ Connector

25
26
27

Ã
Á

ac
k

ow
n

-24

Â
1 SFP Slot
2 Mini-GBIC (MGBIC-MT01)

3 Release tab
4 Link/Activity LED

SecureStack A2 PoE Installation Guide

3-25

Installing Optional Mini-GBICs

Figure 3-19

Mini-GBIC with LC Connector

25
26
27

ac
k

ow
n

-24

Á
À
Â

1 SFP Slot
2 Mini-GBIC (MGBIC-LC01,-LC03, -LC09, MGBIC-08)

3 Release tab
4 Link/Activity LED

Removing the Mini-GBIC
Caution: Do NOT remove a Mini-GBIC from a slot without releasing the locking tab
located under the front bottom end of the Mini-GBIC. This can damage the Mini-GBIC.
The Mini-GBIC and its host switch are sensitive to static discharges. Use an antistatic wrist
strap and observe all static precautions during this procedure. Failure to do so could result
in damaging the Mini-GBIC or host switch. Always leave the Mini-GBIC in the antistatic
bag or an equivalent antistatic container when not installed.
Precaución: NO quite el Mini-GBIC de la ranura sin antes abrir la traba ubicada en la
parte frontal del Mini-GBIC.
Si lo hace, puede dañar el Mini-GBIC, puesto que es muy sensible a las descargas de
electricidad estática, al igual que el dispositivo host. Utilice la pulsera antiestática y tome
todas las precauciones necesarias durante este procedimiento. Si no lo hace, pude dañar
el Mini-GBIC o el dispositivo host. Mientras no esté instalado, mantenga el Mini-GBIC en
su bolsa antiestática o en cualquier otro recipiente antiestático.

3-26

Hardware Installation

Installing Optional Mini-GBICs

To remove a Mini‐GBIC from a port slot, refer back to Figure 3‐17, Figure 3‐18, and
Figure 3‐19, and proceed as follows:
1.

Attach your antistatic wrist strap (refer to the instructions in your antistatic wrist
strap package) before removing the Mini‐GBIC.

Remove the cables connected to the Mini‐GBIC.

Locate the release tab under the front end of the Mini‐GBIC. For the type of
Mini‐GBIC shown in:

Figure 3‐17, push down on the metal release tab above the connector as far as it
will go to release the Mini‐GBIC from the port slot.

Figure 3‐18, push in on the release tab as far as it will go to release the Mini‐GBIC
from the port slot.

Figure 3‐19, pull out on the release tab to release the Mini‐GBIC from the port slot.

Grasp the sides of the Mini‐GBIC and pull it straight out of the port slot.

If storing or shipping a Mini‐GBIC, which has a fiber‐optic connector, insert its protective
dust cover to protect the ends of the fiber‐optic fibers from dust or contamination.

Connecting Fiber-Optic Cables to MT-RJ Ports
Warning: Fiber-optic Mini-GBICs use Class 1 lasers. Do not use optical instruments to
view the laser output. The use of optical instruments to view laser output increases eye
hazard. When viewing the output optical port, power must be removed from the network
adapter.
Advertencia: Los Mini-GBICS de fibra optica usan lasers de clase 1. No se debe usar
instrumentos opticos para ver la potencia laser. El uso de los instrumentos opticos para
ver la potencia laser incrementa el riesgo a los ojos. Cuando vean el puerto de la potencia
optica, la corriente debe ser removida del adaptador de la red.
Warnhinweis: Mini-GBICs mit Fiber-Optik Technologie benutzen Laser der Klasse 1.
Benutzen sie keinesfalls optische Hilfsmittel, um die Funktion des Lasers zu überprüfen.
Solche Hilfsmittel erhöhen die Gefahr von Sehschäden. Wenn sie den optischen Port
überprüfen möchten stellen Sie sicher, dass die Komponente von der
Spannungsversorgung getrennt ist.

This section contains the procedures for connecting a 1000BASE‐SX multimode fiber‐optic
segment from the network or other devices to an MT‐RJ port connector in a Mini‐GBIC
(MGBIC‐MT01).
Each fiber‐optic link consists of two fiber‐optic strands within the cable:
•

Transmit (TX)

•

Receive (RX)

SecureStack A2 PoE Installation Guide

3-27

Installing Optional Mini-GBICs

The transmit strand from a switch port connects to the receive port of a fiber‐optic Gigabit
Ethernet device at the other end of the segment. The receive strand of the applicable
MT‐RJ port connects to the transmit port of the fiber‐optic Gigabit Ethernet switch.
Enterasys Networks recommends labeling fiber‐optic cables to indicate receive and
transmit ends. Many cables are pre‐labeled, providing matching labels or tapes at both
ends of each strand of cable.
To connect an MT‐RJ cable to a fixed MT‐RJ connector of a Mini‐GBIC, refer to Figure 3‐20
and proceed as follows:
1.

Remove the protective covers (not shown) from the front panel MT‐RJ fiber‐optic port
(port 27 in this example) and from the connectors on each end of the cable.
Note: Leave the protective covers in place when the connectors are not in use to prevent
contamination.

Caution: Do not touch the ends of the fiber-optic strands, and do not let the ends come in
contact with dust, dirt, or other contaminants. Contamination of cable ends causes
problems in data transmissions. If the ends of the fiber-optic strands become
contaminated, use a canned duster to blow the surfaces clean. A fiber-port cleaning swab
saturated with optical-grade isopropyl alcohol may also be used to clean the ends.
Precaución: No toque los extremos de los cables de fibra óptica y evite su contacto con
el polvo, la suciedad o con cualquier otro contaminante. Si los extremos de los cables se
ensucian, es posible que la transmisión de datos se vea afectada. Si nota que los
extremos de los cables de fibra óptica se ensucian, utilice aire comprimido para limpiarlos.
También puede limpiarlos con un estropajo embebido en alcohol isopropílico.

Insert the MT‐RJ cable connector into the MT‐RJ connector until it clicks into place.
Note: To remove the MT-RJ cable connector, press on its release tab and pull out the
cable connector.

3-28

Hardware Installation

Installing Optional Mini-GBICs

Figure 3-20

Cable Connection to MT-RJ Multimode Fiber-Optic Connectors

25
26
27

ac
k

ow
n

-24

Â
1 Mini-GBIC MT-RJ port connector
2 MT-RJ cable connector

3 Release tab
4 Link/Activity LED

Plug the other end of the cable into the appropriate port on the other device. Some
cables may be terminated at the other end with two separate connectors, one for each
fiber‐optic strand. In this case, ensure that the transmit fiber‐optic strand is connected
to the receive port and the receive fiber‐optic strand to the transmit port.

Verify that a link exists by checking that the port Link/Activity LED is on (blinking
green or solid green). If the Link/Activity LED is off, perform the following steps until
it is on:
a.

Verify that the device at the other end of the segment is ON and connected to the
segment.

If there are separate fiber‐optic connections on the other device, check the
crossover of the cables. Swap the cable connections if necessary.

Check that the fiber‐optic connection meets the dB loss and cable specifications
outlined in the Cabling Guide for multimode cabling. To obtain this document,
refer to “Related Documents” on page xvi.

If a link has not been established, refer to Chapter 4 for LED troubleshooting details. If
a problem persists, refer to “Getting Help” on page 1‐7 for details on contacting
Enterasys Networks for support.
5.

Repeat steps 1 through 4, above, until all connections have been made.
SecureStack A2 PoE Installation Guide

3-29

Installing Optional Mini-GBICs

Connecting Fiber-Optic Cables to LC Ports
Warning: Fiber-optic Mini-GBICs use Class 1 lasers. Do not use optical instruments to
view the laser output. The use of optical instruments to view laser output increases eye
hazard. When viewing the output optical port, power must be removed from the network
adapter.
Advertencia: Los Mini-GBICS de fibra optica usan lasers de clase 1. No se debe usar
instrumentos opticos para ver la potencia laser. El uso de los instrumentos opticos para
ver la potencia laser incrementa el riesgo a los ojos. Cuando vean el puerto de la potencia
optica, la corriente debe ser removida del adaptador de la red.
Warnhinweis: Mini-GBICs mit Fiber-Optik Technologie benutzen Laser der Klasse 1.
Benutzen sie keinesfalls optische Hilfsmittel, um die Funktion des Lasers zu überprüfen.
Solche Hilfsmittel erhöhen die Gefahr von Sehschäden. Wenn sie den optischen Port
überprüfen möchten stellen Sie sicher, dass die Komponente von der
Spannungsversorgung getrennt ist.

This section describes how to connect
•

a 1000BASE‐SX multimode fiber‐optic segment from the network or other devices to
an LC port connector of a Mini‐GBIC (MGBIC‐LC01), or

•

a 1000BASE‐LX single‐mode fiber‐optic segment from the network or other devices to
an LC port connector of a Mini‐GBIC (MGBIC‐LC09).

Each fiber‐optic link consists of two fiber‐optic strands within the cable:
•

Transmit (TX)

•

Receive (RX)

The transmit strand from a switch port connects to the receive port of a fiber‐optic Gigabit
Ethernet device at the other end of the segment. The receive strand of the applicable LC
port connects to the transmit port of the fiber‐optic Gigabit Ethernet device.
Enterasys recommends labeling fiber‐optic cables to indicate receive and transmit ends.
Many cables are pre‐labeled, providing matching labels or tapes at both ends of each
strand of cable.
To connect an LC cable connector to a fixed LC connector of a Mini‐GBIC, refer to
Figure 3‐21 and proceed as follows:
Caution: Do not touch the ends of the fiber-optic strands, and do not let the ends come in
contact with dust, dirt, or other contaminants. Contamination of cable ends causes
problems in data transmissions. If the ends of the fiber-optic strands become
contaminated, use a canned duster to blow the surfaces clean. A fiber-port cleaning swab
saturated with optical-grade isopropyl alcohol may also be used to clean the ends.
Precaución: No toque los extremos de los cables de fibra óptica y evite su contacto con
el polvo, la suciedad o con cualquier otro contaminante. Si los extremos de los cables se
ensucian, es posible que la transmisión de datos se vea afectada. Si nota que los
extremos de los cables de fibra óptica se ensucian, utilice aire comprimido para limpiarlos.
También puede limpiarlos con un estropajo embebido en alcohol isopropílico.
3-30

Hardware Installation

Installing Optional Mini-GBICs

Remove the protective covers (not shown) from the front panel LC fiber‐optic port
(port 27 in this example) and from the connectors on each end of the cable.
Note: Leave the protective covers in place when the connectors are not in use to prevent
contamination.

Insert the LC cable connector into the Mini‐GBIC LC connector until it clicks into
place.
Note: To remove the LC cable connector, press on its release tab and pull it out of
Mini-GBIC LC connector.

Figure 3-21

Cable Connection to LC Fiber-Optic Connectors

26
27

ow
n

ac
k

-24

Â
À
Á

1 Mini-GBIC MT-RJ port connector
2 LC cable connector

3 Release tab
4 Link/Activity LED

SecureStack A2 PoE Installation Guide

3-31

Completing the Installation

Verify that a link exists by checking that the port Link/Activity LED is on (blinking
green or solid green). If the Link/Activity LED is off, perform the following steps until
it is on:
a.

Verify that the device at the other end of the segment is ON and connected to the
segment.

If there are separate fiber‐optic connections on the other device, check the
crossover of the cables. Swap the cable connections if necessary.

Check that the fiber‐optic connection meets the dB loss and cable specifications
outlined in the Cabling Guide for multimode mode cabling. To obtain this
document, refer to “Related Documents” on page xvi.

d. If a link has not been established, refer to Chapter 4 for LED troubleshooting
details. If a problem persists, refer to refer to “Getting Help” on page 1‐7 for
details on contacting Enterasys Networks for support.
5.

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

Completing the Installation
After installing the switch and making the connections to the network, access the switch
management, as described below.

Initial Logon to Switch Management
To initially access switch management from your local PC, terminal, or modem
connection, proceed as follows at the displayed startup screen:
1.

Enter rw (Read‐Write) or admin (superuser) for Username.

At the Password prompt, press Enter (RETURN).

For details on how to configure the switch using the command line interface, refer to
the SecureStack A2 Configuration Guide. The CLI commands enable you to set a new
password and perform more involved management configurations on the switch.
One of many capabilities is to reconfigure the stack, reassigning the Manager function
to another switch and configuring the order of Member switches that will take over
the stack management functions in case the operating Manager is powered down,
malfunctions, or is removed from the stack.

After the initial configuration, you can also use WebView (Enterasys Networks’
embedded web server) for configuration and management tasks.
All the guides associated with the switch are available online at:
http://www.enterasys.com/support/manuals

Once you are confident that the installation is successful, route and secure your cables. If
you require assistance, contact Enterasys Networks using one of the methods described in
“Getting Help” on page 1‐7.
3-32

Hardware Installation

4
Troubleshooting
This chapter provides information concerning the following:
For information about...

Refer to page...

Using LANVIEW

4-2

Troubleshooting Checklist

4-7

Using the Reset Password Switch

4-9

This device contains a battery that is not considered a user replaceable part. If the battery
needs to be replaced, contact customer service for repair.
Caution: There is a risk of explosion if the battery is replaced with an incorrect type. A
used battery may be safely disposed in a municipal waste stream.
Precaucion: Hay riesgo de explosion si la bateria se reemplaza con el typo incorrecto.
Puede tirar la bateria usada en la basura.

SecureStack A2 PoE Installation Guide

4-1

Using LANVIEW

Using LANVIEW
These switches support the Enterasys Networks built‐in LANVIEW LED visual
diagnostic and status monitoring system. The LANVIEW LEDs on both the A2H124‐24P
and A2H124‐48P are located in similar locations as shown on A2H124‐24P in Figure 4‐1.
The LANVIEW LEDs on the A2H124‐48P are shown in Figure 4‐2. These LEDs allow you
to quickly observe network status for diagnosing switch and network problems.
Figure 4-1

LANVIEW LEDs of A2H124-24P

Å
1

A2H124-24P
23

25
Console
CPU

MGR
RPS

10 12

25/Up

26/Down
27

27
28
2

Stack

Æ
Ã
Â
Á
À

CPU
MGR
RPS

Figure 4-2

LANVIEW LEDs of A2H124-48P

Ä
1

CPU

Å Æ
26

49/Up 50/Down

52
51

MGR
RPS
Stack

Ã
CPU

MGR
RPS

Â
Á
À

1
2
3
4

4-2

Troubleshooting

Recessed Password Reset switch
Redundant Power Supply Active
Unit selected as Stack Manager
CPU and Power Indicator

5
6
7

10/100 Mbps Ports Link/Activity
1000 Mbps Stacking Port Link/Activity
Mini-GBIC Link/Activity

Using LANVIEW

Note: The terms flashing, blinking, and solid used in Table 4-1 indicate the following:
Flashing: LED is flashing randomly.
Blinking: LED is flashing at a steady rate (approximately 50% on, 50% off).
Solid: LED is on steady and not pulsing.

Table 4-1

LANVIEW LEDs

LED

Color

State

Recommended Action

CPU

Off

Power disconnected.

If the LED remains off after connecting AC
power or DC power from an RPS, check
the following:
1. Make sure there is power at the power
source (AC source and RPS if
applicable).
2. Replace the power cord with a known
good one or check the continuity of the
power cord.
3. If the SecureStack A2 still does not
power up, the system may have a fatal
error. Contact Enterasys Networks for
technical support.

Red

Amber

Solid. Boot-up failed.

If the LED remains red for several
minutes, the system may have a fatal
error. Contact Enterasys Networks for
technical support.

Blinking. Diagnostics have
failed.

Contact Enterasys Networks for technical
support.

Solid. Diagnostics are running. If the LED remains amber for more than
several minutes, contact
Enterasys Networks for technical support.
Blinking. Code image is being
downloaded.

None.

This also notes when the
configuration is being saved to
member units. (This occurs
every 15 minutes and when the
user enters the “save config”
command).
Green

Solid. System is fully
functional.

None.

Blinking. Boot-up in process.

None.

SecureStack A2 PoE Installation Guide

4-3

Using LANVIEW

Table 4-1

LANVIEW LEDs (continued)

LED

Color

State

Recommended Action

DOWN

Off

No valid connection to switch
stackup connector.

1. Make sure the switch connected to the
stackup connector is powered on.
2. Replace cable with a known good one.
3. If the problem still exists, contact
Enterasys Networks for technical
support.

Green

Solid. Valid connection to
switch stackup connector.

None.

Flashing. Information is being
transferred via the stacking
cable.
UP

Off

No valid connection to switch
stackdown connector.

1. Make sure the switch connected to the
stackdown connector is powered on.
2. Replace cable with a known good one.
3. If the problem still exists, contact
Enterasys Networks for technical
support.

Green

Solid. Valid connection to
switch stackdown connector.

None.

Flashing. Information is being
transferred via the stacking
cable.
Manager

4-4

Troubleshooting

Off

Switch is operating as a
Member in the stack.

None.

Green

Solid. Switch is operating as
the Manager of the stack.

None.

Using LANVIEW

Table 4-1

LANVIEW LEDs (continued)

LED

Color

State

Recommended Action

RPS

Off

The RPS LED remains off
regardless if the RPS is
attached or not. The LED being
in its off state is not an
indication that the RPS is not
functioning properly and won’t
supply power in the event of an
AC power supply failure.

None.

See Amber state below.
Amber

Solid.The switch internal
power supply failed, and the
RPS is providing the proper
power to the switch.

1. Ensure that the AC power cord is
plugged in correctly and that there is
power at the AC power source.
2. Replace the power cord with a known
good one.
3. If the problem persists, contact
Enterasys Networks for technical
support.

Link
Activity

Off

1. No link - no connection.

None.

2. Remote device powered off. Power on remote device.

Green

3. Port in standby.

Use CLI to enable port.

4. Cable is bad.

Replace UTP cable with a known good
one.

Solid. Port is linked, but the
interface is not receiving any
traffic.

None.

Blinking. Port is linked and
traffic is being received or
transmitted by the interface.

None.

SecureStack A2 PoE Installation Guide

4-5

Using LANVIEW

Table 4-1
LED

LANVIEW LEDs (continued)
Color

State

Recommended Action

Amber

Solid. Port is linked, but traffic
is not being received or
transmitted by the interface.
PoE power has failed.

1. Check the attached powered device to
see if it is defective.

PoE power may have been
deactivated because of
excessive power requirement
or deactivated by
configuration.

2. Internal power supply failed, contact
Enterasys Networks for technical
support.

Power Supply failed.
Blinking. Port is linked and
traffic is being received or
transmitted by the interface.
PoE power has failed.
PoE power may have been
deactivated because of
excessive power requirement
or deactivated by
configuration.
Power supply failed.

4-6

Troubleshooting

1. Check the attached powered device to
see if it is defective.
2. Internal power supply failed, contact
Enterasys Networks for technical
support.

Troubleshooting Checklist

Troubleshooting Checklist
If the device is not working properly, refer to Table 4‐2 for a checklist of problems,
possible causes, and recommended actions to resolve the problem.
Table 4-2

Troubleshooting Checklist

Problem

Possible Cause

Recommended Action

All LEDs are OFF.

Loss of power.

Ensure that the SecureStack A2 was
installed properly according to the
installation instructions in Chapter 3.
Ensure that the power cords are
connected properly to an active power
source that meets the AC input
specifications for this switch.
Ensure that the AC power cord is not
damaged. Replace the power cord with a
known good one.

All LEDs are OFF

No local
management
startup screen.

Cannot navigate
beyond startup
screen.

Possible mismatch in code
between the master and the
device. If the switch does not
have the same code as the
stack master the switch will not
join the stack and all LEDs will
remain off.

Connect to the console port and type
“show switch”. If a code mismatch is the
cause, the output of the above command
will show “code version mismatch”.

Incorrect terminal setup.

Refer to the SecureStack A2
Configuration 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 device again. Refer to the
SecureStack A2 Configuration Guide for
details.

Improper Community Names
Table.

Refer to the SecureStack A2
Configuration Guide for the Community
Names Table setup.

Disconnect the switch from the stack and
load the necessary code to match the
stack master.

SecureStack A2 PoE Installation Guide

4-7

Troubleshooting Checklist

Table 4-2

Troubleshooting Checklist (continued)

Problem

Possible Cause

Recommended Action

Cannot contact the
SecureStack A2
through in-band
management.

IP address not assigned.

Refer to the SecureStack A2
Configuration Guide for the IP address
assignment procedure.

Port is disabled.

This is normal if the switch is a Member in
a stack.
If operating as a standalone switch or as
the Manager in a stack, enable the port.
Refer to the SecureStack A2
Configuration Guide for instructions to
enable/disable ports.

No link to switch.

Verify that all network connections
between the network management station
and the device are valid and operating.
If the problem continues, contact
Enterasys Networks for technical support.

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

Loop condition detected.

Verify that Spanning Tree is enabled.
Refer to the SecureStack A2
Configuration Guide for the instructions to
set the type of STA.
Review the network design and delete
unnecessary loops.
If the problem continues, contact
Enterasys Networks for technical support.

User parameters (IP
address, switch and
module name, etc.)
were lost when the
SecureStack A2
power was cycled.

Clear NVRAM was set using
CLI commands.

If the problem continues, contact
Enterasys Networks for technical support.
User powered the switch off
before the configuration was
saved (configuration changes
on the A2 are internally saved
every two minutes).

4-8

Troubleshooting

Reenter the lost parameters as
necessary. Refer to the SecureStack A2
Configuration Guide for the instructions to
configure the SecureStack A2 using CLI
commands.

Execute the “save config” command, and
wait for the prompt to come back before
Powering the switch off.
Executing the “reset” command
automatically saves the config before
resetting the switch.

Using the Reset Password Switch

Using the Reset Password Switch
If you forget the SecureStack A2 login password, use the Reset password switch as
described in the following procedure.
Figure 4-3

Reset Password Switch

Console
CPU

MGR
RPS

À
1 Reset password switch

To reset the SecureStack A2 password, refer to Figure 4‐3 and proceed as follows:
Note: Notify the system manager before changing the password.

Press‐and‐hold the Reset Password switch while the switch is operational. This
change of the login password to the default password will be indicated via Local
Management CLI only. This information will not show up in a Telnet session.

Logon to switch management. You can now logon to the switch via the Console port
and assign a new password using the command line interface (CLI).

To access switch management from your local PC, terminal, or modem connection,
refer to the SecureStack A2 Configuration Guide for instructions on how to log in and
enter a new password. The guide is available online under the S category for
Securestack at:
http://www.enterasys.com/support/manuals

If you require assistance, contact Enterasys Networks using one of the methods described
in “Getting Help” on page 1‐7.

SecureStack A2 PoE Installation Guide

4-9

Using the Reset Password Switch

4-10

Troubleshooting

A
Specifications
This appendix provides information about the following:
For information about...

Refer to page...

Switch Specifications

A-1

Mini-GBIC Input/Output Specifications

A-4

Gigabit Ethernet Specifications

A-4

MGBIC-02 Specifications (1000BASE-T)

A-7

Regulatory Compliance

A-8

Enterasys Networks reserves the right to change the specifications at any time without
notice.

Switch Specifications
Table A‐1 provides the I/O ports, processors and memory, physical, and environmental
specifications for the A2H124‐24P.
Table A‐2 provides the I/O ports, processors and memory, physical, and environmental
specifications for the A2H124‐48P.
Table A-1

A2H124-24P Switch Specifications

Item

Specification

RJ45 ports 1 through 24

Twenty-four 10/100BASE-T compliant ports with auto-sensing
and auto-negotiation via RJ45 UTP connectors.

RJ45 ports 25 and 26

Two 10/100/1000BASE-TX compliant ports with auto-sensing
and auto-negotiation via RJ45 UTP connectors for stacking. In
standalone mode, these ports can be used for host connections
and interswitch links.

SFP ports 27 and 28

Two slots that support optional Mini-GBICs 1000BASE-FX
fiber-optic connections and 1000BASE-T copper connections.
SecureStack A2 PoE Installation Guide

A-1

Switch Specifications

Table A-1

A2H124-24P Switch Specifications (continued)

Item

Specification

AC Input Specifications
Input Voltage

100 to 240 VAC

Input Currrent

5.1 A Max

Frequency

50 to 60 Hz

Processors/Memory
Processor

MPC8241, 266 MHz processor

Dynamic Random Access
Memory (DRAM)

128 MB

FLASH Memory

16 MB

Physical
Dimensions

4.4 H x 44.1 W x 21.0 D cm (1.7 H x 17.4 W x 8.27 D in.)

Approximate Weight

Gross:

6.8 kg (14.99 lb) (shipping carton
containing one module)

Net:

5.78 kg (12.74 lb) (one module
without packaging)

Predicted hours for Mean Time
Between Failures (MTBF)

201,377 hours

Heat Dissipation (maximum)

@ 29.01 W, 1522 Btu/hr

Environmental

A-2 Specifications

Operating Temperature

0°C to 40°C (32°F to 104°F)

Storage Temperature

-40°C to 70°C (-40°F to 158°F)

Operating Relative Humidity

5% to 95% (non-condensing)

Switch Specifications

Table A-2

A2H124-48P Switch Specifications

Item

Specification

RJ45 ports 1 through 48

Forty-eight 10/100BASE-T compliant ports with auto-sensing
and auto-negotiation via the RJ45 connections.

RJ45 ports 49 and 50

Two 10/100/1000BASE-TX compliant ports with auto-sensing
and auto-negotiation via RJ45 connectors for stacking. In
standalone mode, these ports can be used for host connections
and interswitch links.

SFP ports 51 and 52

Two slots that support optional Mini-GBICs for 1000BASE-T
Gigabit copper and 1000BASE-FX fiber-optic connections.

AC Input Specifications
Input Voltage

100 to 240 VAC

Input Currrent

5.0 A Max

Frequency

50 to 60 Hz

Processors/Memory
Processor

MPC8241, 266 MHz processor

Dynamic Random Access
Memory (DRAM)

128 MB

FLASH Memory

16 MB

Physical
Dimensions

4.4 H x 44.1 W x 36.85 D cm (1.7 H x 17.4 W x 14.5D in.)

Approximate Weight

Gross:

7.41 kg (16.34 lb (shipping carton
containing one module)

Net:

6.39 kg (14.087 lb) (one module
without packaging)

Heat Dissipation (maximum)

@ 45.13 W, 1580 Btu/hr

Predicted hours for Mean Time
Between Failures (MTBF)

169,150 hours

Environmental
Operating Temperature

0°C to 40°C (32°F to 104°F)

Storage Temperature

-40°C to 70°C (-40°F to 158°F)

Operating Relative Humidity

5% to 95% (non-condensing)

SecureStack A2 PoE Installation Guide

A-3

Mini-GBIC Input/Output Specifications

Mini-GBIC Input/Output Specifications
The Mini‐Gigabit Ethernet Card (Mini‐GBIC) port interface slots can support 1‐Gbps
fiber‐optic connections as described in Table A‐3. The optional Mini‐GBICs are hot
swappable.
Table A-3

Mini-GBIC Input/Output Port Specifications

Item

Specification

MGBIC-LC01

Provides one LC fiber-optic multimode port that is compliant with the
1000BASE-SX standard LC connector.

MGBIC-LC03

Provides one LC Long Haul (up to 2 KM) fiber-optic multimode port
that is compliant with the 1000BASE-SX standard LC duplex style
connector.

MGBIC-LC09

Provides one LC fiber-optic single-mode port that is compliant with the
1000BASE-LX standard LC connector.

MGBIC-MT01

Provides one MT-RJ fiber-optic multimode port that is compliant with
the 1000BASE-SX standard MT-RJ connector.

MGBIC-08

Provides one LC fiber-optic single-mode port that is compliant with the
1000BASE-ELX standard LC connector.

MGBIC-02

Provides one RJ45 copper connection that is compliant with the
1000BASE-T standard RJ45 connector.

Gigabit Ethernet Specifications
The following specifications for the Mini‐GBICs shown in Table A‐4 through Table A‐12
meet or exceed the IEEE 802.3z‐1998 standard.

MGBIC-LC01/MGBIC-MT01 Specifications (1000BASE-SX)
Table A-4

A-4 Specifications

MGBIC-LC01/MGBIC-MT01 Optical Specifications

Item

62.5 µm MMF

50 µm MMF

Transmit Power (minimum)

-9.5 dBm

Receive Sensitivity

-17 dBm

Link Power Budget

7.5 dBm

Gigabit Ethernet Specifications

Table A-5

MGBIC-LC01/MGBIC-MT01 Operating Range

Item

Modal Bandwidth @
850 nm

Range

62.5 µm MMF

160 MHz/km

2-220 Meters

62.5 µm MMF

200 MHz/km

2-275 Meters

50 µm MMF

400 MHz/km

2-500 Meters

50 µm MMF

500 MHz/km

2-550 Meters

MGBIC-LC03 Specifications (1000BASE-SX)
Table A-6

MGBIC-LC03 Optical Specifications

Item

62.5/125 µm MMF

50/125 µm MMF

Transmit Power (minimum)

-9.5 dBm

Transmit Power (maximum)

-3 dBm

Receive Sensitivity

-20 dBm

Link Power Budget1
(Multimode Only)

10.5 dBm

1. The maximum drive distance (up to 2 km) depends on the quality of the installed multimode fiberoptic cable segment. Use the Link Power Budget to calculate the maximum cable length of the
attached segment. The Link Power Budget must not exceed those specified in this table. The
MGBIC-LC03 input power must not exceed -3 dBm. Otherwise, saturation could occur.

Table A-7

MGBIC-LC03 Operating Range

Item

Modal Bandwidth @ 1310 nm

Range

62.5 µm MMF

160 MHz/km

2,000 Meters

50 µm MMF

400 MHz/km

2,000 Meters

SecureStack A2 PoE Installation Guide

A-5

Gigabit Ethernet Specifications

MGBIC-LC09 Specifications (1000BASE-LX)
Table A-8

MGBIC-LC09 Optical Specifications

Item

62.5 µm MMF

50 µm MMF

10 µm SMF

Transmit Power (minimum)

-11.5 dBm

-9.5 dBm

Receive Sensitivity

-20 dBm

Link Power Budget

8.5 dBm

10.5 dBm

Table A-9

MGBIC-LC09 Operating Range

Item

Modal Bandwidth @ 1300 nm

Range

62.5 µm MMF

500 MHz/km

2-550 Meters

50 µm MMF

400 MHz/km

2-550 Meters

50 µm MMF

500 MHz/km

2-550 Meters

10 µm SMF

N/A

2-10,000 Meters

MGBIC-08 Specifications (1000BASE-ELX)
Table A-10

MGBIC-08 Optical Specifications

Item

10 µm SMF

Transmit Power (minimum)

-0 dBm, min.

+2 dBm, typical

Receive Sensitivity

-24 dBm, min.

-26 dBm, typical

Maximum Input Power

-3 dBm

Link Power Budget1
(Full Duplex Only)

23 dB

+5 dBm, max.

28 dB, typical

1. The maximum drive distance (up to 70 km) depends on the quality of the installed single-mode
fiber-optic cable segment. Use the Link Power Budget to calculate the maximum cable length of the
attached segment. The Link Power Budget must not exceed those specified in this table. The
MGBIC-08 input power must not exceed -3 dBm. Otherwise, saturation could occur.

Table A-11

A-6 Specifications

MGBIC-08 Operating Range

Item

1550 nm

Range

9 or 10 µm SMF

N/A

70,000 Meters

Console Port Pinout Assignments

MGBIC-02 Specifications (1000BASE-T)
Table A-12

MGBIC-02 Specifications

Item

Specification

Supported Cable:
Type

Copper, Category 5 UTP

Maximum Length

Up to 100 meters

Connector

RJ45

Data Rate

1 Gbps, IEEE 802.3:2000 compatible
1000BASE-T operation only
Automatic crossover detection

TX Output impedance

100 ohms, typical at all frequencies between 1 MHz and 125 MHz

RX Input impedance

100 ohms, typical at all frequencies between 1 MHz and 125 MHz

Console Port Pinout Assignments
The Console port is a DB9 serial communications port for local access to Local
Management. Refer to Figure A‐1 for the Console port pin assignments.
Figure A-1

Console Port Pinout Assignments

3
5

2
1
1
2

Pin 2, Received Data (input)
Pin 3, Transmitted Data (output)

Pin 5, Signal Ground
All other pins not connected.

SecureStack A2 PoE Installation Guide

A-7

Regulatory Compliance

Regulatory Compliance
The A2H124‐24P and A2H124‐48P meet the safety and electromagnetic compatibility
(EMC) requirements listed in Table A‐13:
Table A-13

A-8 Specifications

Compliance Standards

Regulatory Compliance

Standards

Safety

UL 60950, CSA C22.2 No. 60950, 73/23/EEC, EN 60950,
IEC 60950, EN 60825, 21 CFR 1040.10

Electromagnetic Compatibility (EMI)
(Class A)

47 CFR Parts 2 and 15, CSA C108.8, 89/336/EEC,
EN 55022, EN 61000-3-2, EN 61000-3-3, EN 55024,
AS/NZS CISPR 22, VCCI V-3

Index
Numerics

1000BASE-SX/LX network connections
requirements for 2-2
1000BASE-T
requirements for 2-2
100BASE-TX
requirements 2-2
10BASE-T
connection 3-19
requirements 2-1

High-Speed Stack Connections
introduction to 1-4
High-speed stacking cables
installation of 3-7

A2H124-24P
overview of 1-2
A2H124-48P
overview of 1-2

Installation
connecting to the network 3-19
high-speed stacking cables 3-7
in a rack 3-6
new stack 3-10
new switch in existing stack 3-11
optional Mini-GBIC 3-22
Installation site
what is needed at the 3-5

Cable
fiber budget A-4
Cable specifications
1000BASE-SX/LX network 2-2
1000BASE-T network 2-2
100BASE-TX network 2-2
10BASE-T network 2-1
CLI command
introduction to 1-6
Configuring switches
stack configuration 3-9
Connecting to the network 3-19
Connectivity
introduction to 1-5
Console port
pinout assignments A-7

LANVIEW Diagnostic LEDs
introduction to 1-7
LANVIEW LEDs 4-2
Link LEDs
viewing of 4-2
Local Management
introduction to 1-6

D
Document conventions xvii

E
Electromagnetic Compatibility (EMC)
requirements A-8
Enterasys
contacting 1-7

F
Fiber budget A-4
Front panel 1-3

M
Management
use of 1-6
MGBIC-02 A-7
MGBIC-08
specifications for A-6
MGBIC-LC01
specifications for A-4, A-5
MGBIC-LC03
specifications for A-5
MGBIC-LC09
specifications for A-6
MGBIC-MT01
specifications for A-4, A-5
Mini-GBIC
installation of 3-22
removal of 3-26
Mini-GBIC input/outputs
specifications for A-4

P
PD (Powered Device)
definition of xv
Index-1

Pinout assignments
console port A-7
UTP 4-wire crossover cable 3-21
UTP 4-wire straight-through cable 3-21
UTP 8-wire crossover cable 3-21
UTP 8-wire straight-through cable 3-22
PoE (Power over Ethernet)
introduction to 1-4
Power connection
AC 3-12
RPS DC 3-13

R
Rackmount installation
guidelines for 3-6
Receive/Transmit LEDs
viewing of 4-2
Redundant Power Supply Capability
introduction to 1-4
Regulatory Compliance A-8
Related manuals xvi

S
Safety requirements A-8
Specifications A-1
A2H124-24 A-1
A2H124-48 A-3
MGBIC-08 A-6
MGBIC-LC01 A-4, A-5
MGBIC-LC03 A-5
MGBIC-LC09 A-6
MGBIC-MT01 A-4, A-5
Mini-GBIC input/outputs A-4
Stack initialization
manager switch selection 3-14

Index-2

Stack Manager
automatic selection of 3-14
Stack Member
automatic selection of 3-14
Stack Operation
member switch selection 3-14
Stack System
installation of a new switch in existing stack 3-11
installation of new 3-10
Standalone Switches
specifications for A-1
Standards compatibility 1-6
Switch A-1
overview of 1-2
Switch carton
contents of 3-2
unpacking of 3-2
Switch Operation
stack installation 3-9

T
Table A-2 A-1
Troubleshooting 4-2

U
Unpacking the module 3-2
Using the Reset Password Switch 4-9

V
Viewing Receive and Transmit Activity
instructions for 4-2

W
WebView
introduction to 1-6

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