Qlogic SANbox2-16 Fibre Channel User manual

Simplify
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59021-07 A Page i
SANbox2-16 Fibre Channel Switch
Installation Guide

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SANbox2-16 Fibre Channel Switch
Installation Guide
© 2000–2003 QLogic Corporation
First Printed: May 2001
All Rights Reserved Worldwide.
Printed in U.S.A.
Information furnished in this manual is believed to be accurate and reliable. However, QLogic Corporation assumes no
responsibility for its use, nor for any infringements of patents or other rights of third parties which may result from its
use. QLogic Corporation reserves the right to change product specifications at any time without notice. Applications
described in this document for any of these products are for illustrative purposes only. QLogic Corporation makes no
representation nor warranty that such applications are suitable for the specified use without further testing or
modification. QLogic Corporation assumes no responsibility for any errors that may appear in this document.
QLogic, SANbox, SANbox2, SANblade, SANsurfer, and Multistage are trademarks or registered trademarks of
QLogic Corporation.
Java and Solaris are registered trademarks of Sun Microsystems, Inc.
Pentium is a registered trademark of Intel Corporation.
Linux is a registered trademark of Linus Torvalds.
Microsoft, Windows NT, and Windows 2000, and Internet Explorer are registered trademarks of Microsoft
Corporation.
Netscape Navigator is a registered trademark of Netscape Communications Corporation.
Red Hat is a registered trademark of Red Hat Software Inc.
SANmark is a registered trademark of the Fibre Channel Industry Association.
All other brand and product names are trademarks or registered trademarks of their respective owners.
Document Revision History
Revision A, Release, September 2003

59021-07 A Page iii
Table of Contents
Section 1 Introduction
1.1 Intended Audience ............................................................................................. 1-1
1.2 Related Materials ............................................................................................... 1-2
1.3 Safety Notices .................................................................................................... 1-3
1.4 Sicherheitshinweise............................................................................................ 1-3
1.5 Notes informatives relatives à la sécurité........................................................... 1-3
1.6 Communications Statements.............................................................................. 1-4
1.6.1 Federal Communications Commission (FCC) Class A Statement ............ 1-4
1.6.2 Canadian Department of Communications Class A
Compliance Statement .............................................................................. 1-4
1.6.3 Avis de conformité aux normes du ministère des
Communications du Canada ..................................................................... 1-4
1.6.4 CE Statement ............................................................................................ 1-5
1.6.5 VCCI Class A Statement ........................................................................... 1-6
1.6.6 BSMI Class A Statement ........................................................................... 1-6
1.7 Laser Safety Information .................................................................................... 1-7
1.8 Electrostatic Discharge Sensitivity (ESDS) Precautions .................................... 1-7
1.9 Accessible Parts................................................................................................. 1-8
1.10 Pièces Accessibles............................................................................................. 1-8
1.11 Zugängliche Teile ............................................................................................... 1-8
1.12 General Public License ...................................................................................... 1-9
1.12.1 Preamble ................................................................................................... 1-9
1.12.2 Terms And Conditions For Copying, Distribution And Modification ......... 1-10
1.12.3 How to Apply These Terms to Your New Programs ................................ 1-14
1.13 Technical Support............................................................................................. 1-16
1.13.1 Availability................................................................................................ 1-16
1.13.2 Training.................................................................................................... 1-16
1.13.3 Contact Information ................................................................................. 1-16
Section 2 General Description
2.1 Chassis Controls and LEDs ............................................................................... 2-2
2.1.1 Power Switches......................................................................................... 2-2
2.1.2 Maintenance Button................................................................................... 2-2
2.1.3 Chassis LEDs............................................................................................ 2-3
2.1.3.1 Over Temperature LED (Amber)....................................................... 2-3
2.1.3.2 Fan Fail LED (Amber)....................................................................... 2-3

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2.1.3.3 Heartbeat LED (Amber).................................................................... 2-4
2.1.3.4 Input Power LED (Green) ................................................................. 2-4
2.2 Fibre Channel Ports ........................................................................................... 2-4
2.3 Port LEDs ........................................................................................................... 2-5
2.3.0.5 Logged-In LED ................................................................................. 2-5
2.3.0.6 Activity LED ...................................................................................... 2-5
2.3.1 Small Form-Factor Pluggable (SFP) Transceivers.................................... 2-6
2.3.1.1 Port Modes ....................................................................................... 2-6
2.3.1.2 Fabric Ports ...................................................................................... 2-7
2.3.1.3 Expansion Port ................................................................................. 2-7
2.4 Ethernet Port ...................................................................................................... 2-7
2.5 Serial Port........................................................................................................... 2-8
2.6 Power Supplies .................................................................................................. 2-9
2.7 Fans ................................................................................................................. 2-10
2.8 Switch Management......................................................................................... 2-10
Section 3 Planning
3.1 Devices............................................................................................................... 3-1
3.2 Multiple Chassis Fabrics .................................................................................... 3-2
3.2.1 Domain ID, Principal Priority, and Domain ID Lock ................................... 3-2
3.2.2 Common Topologies.................................................................................. 3-3
3.2.2.1 Cascade Topology ............................................................................ 3-3
3.2.2.2 Mesh Topology ................................................................................. 3-4
3.2.2.3 Multistage Topology .......................................................................... 3-5
3.3 Performance....................................................................................................... 3-6
3.3.1 Distance..................................................................................................... 3-6
3.3.2 Bandwidth.................................................................................................. 3-7
3.3.3 Latency...................................................................................................... 3-7
3.4 Device Access.................................................................................................... 3-8
3.4.1 Soft Zones ................................................................................................. 3-9
3.4.2 Access Control List Hard Zones................................................................ 3-9
3.4.3 Virtual Private Fabric Hard Zones ........................................................... 3-10
3.4.4 User Account Security............................................................................. 3-11
3.4.5 Device Security........................................................................................ 3-11
3.4.5.1 Security Example: Switches and HBAs .......................................... 3-12
3.4.5.2 Security Example: Host Authentication .......................................... 3-14
3.4.6 Fabric Services........................................................................................ 3-15
3.5 Fabric Management ......................................................................................... 3-16

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Section 4 Installation
4.1 Site Requirements.............................................................................................. 4-1
4.1.1 Fabric Management Workstation............................................................... 4-1
4.1.2 Switch Power Requirements ..................................................................... 4-1
4.1.3 Environmental Conditions.......................................................................... 4-2
4.2 Installing a Switch............................................................................................... 4-2
4.2.1 Mount the Switch....................................................................................... 4-3
4.2.2 Install SFP Transceivers............................................................................ 4-5
4.2.3 Connect the Switch to AC Power .............................................................. 4-6
4.2.4 Connect the Management Workstation to the Switch................................ 4-9
4.2.4.1 Ethernet Connection....................................................................... 4-10
4.2.4.2 Serial Connection ........................................................................... 4-10
4.2.5 Install SANbox Manager.......................................................................... 4-11
4.2.6 SANsurfer Management Suite Disk - Windows Installation..................... 4-12
4.2.7 SANsurfer Management Suite Disk - Linux Installation........................... 4-12
4.2.8 SANsurfer Management Suite Disk - Solaris Installation ........................ 4-13
4.2.9 SANbox2 Installation Disk - Windows Installation ................................... 4-14
4.2.10 SANbox2 Installation Disk - Linux Installation ......................................... 4-15
4.2.10.1 SANbox2 Installation Disk - Solaris Installation .............................. 4-15
4.2.11 Configure the Switch ............................................................................... 4-15
4.2.12 Configure the Ports.................................................................................. 4-16
4.2.13 Cable Devices to the Switch.................................................................... 4-16
4.3 Install Firmware ................................................................................................ 4-17
4.3.1 Using SANbox Manager to Install Firmware............................................ 4-17
4.3.2 Using the CLI to Install Firmware ............................................................ 4-18
4.3.3 Using FTP and the CLI to Install Firmware.............................................. 4-19
4.4 Powering Down a Switch.................................................................................. 4-20
Section 5 Diagnostics/Troubleshooting
5.1 POST Diagnostics .............................................................................................. 5-1
5.1.1 Heartbeat LED Blink Patterns.................................................................... 5-1
5.1.1.1 Normal (all pass)............................................................................... 5-1
5.1.1.2 Maintenance Mode Pattern .............................................................. 5-2
5.1.1.3 Internal Firmware Failure Blink Pattern ............................................ 5-2
5.1.1.4 Fatal Error Blink Pattern ................................................................... 5-2
5.1.1.5 Configuration File System Error Blink Pattern .................................. 5-2
5.1.2 Logged-In LED Indications ........................................................................ 5-5
5.1.2.1 E_Port Isolation ................................................................................ 5-6
5.1.2.2 Excessive Port Errors ....................................................................... 5-7
5.2 Chassis Diagnostics ........................................................................................... 5-9

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5.2.1 Chassis Over Temperature LED is Illuminated........................................ 5-10
5.2.2 Input Power LED Is Extinguished............................................................ 5-10
5.2.3 Fan Fail LED is Illuminated...................................................................... 5-10
5.2.4 Output Power LED Is Extinguished ......................................................... 5-11
5.2.5 Power Supply Over Temperature LED is Illuminated .............................. 5-11
5.3 Recovering a Switch......................................................................................... 5-12
5.3.1 Maintenance – Exit.................................................................................. 5-13
5.3.2 Maintenance – Image Unpack................................................................. 5-14
5.3.3 Maintenance – Reset Network Config..................................................... 5-14
5.3.4 Maintenance – Reset Password File....................................................... 5-14
5.3.5 Maintenance – Copy Log Files................................................................ 5-14
5.3.6 Maintenance – Remove Switch Config.................................................... 5-14
5.3.7 Maintenance – Remake Filesystem ........................................................ 5-15
5.3.8 Maintenance – Reset Switch................................................................... 5-15
5.3.9 Maintenance – Show Firmware Versions ................................................ 5-15
5.3.10 Maintenance – Set Active Image............................................................. 5-15
Section 6 Removal/Replacement
6.1 SFP Transceivers............................................................................................... 6-2
6.2 Power Supplies .................................................................................................. 6-3
6.3 Fans ................................................................................................................... 6-4
Appendix A Specifications
A.1 Fabric Specifications ..........................................................................................A-1
A.2 Maintainability.....................................................................................................A-2
A.3 Fabric Management ...........................................................................................A-3
A.4 Dimensions.........................................................................................................A-3
A.5 Electrical.............................................................................................................A-3
A.6 Environmental ....................................................................................................A-4
A.7 Regulatory Certifications ....................................................................................A-5
A.8 Shortwave Laser SFP 1G/2G (multi-mode)........................................................A-6
A.9 Longwave Laser SFP 1G/2G (single-mode) ......................................................A-7
Appendix B Command Line Interface
B.1 Logging On to a Switch ......................................................................................B-1
B.2 Command Syntax...............................................................................................B-2
B.3 Commands .........................................................................................................B-3
Admin Command.......................................................................................B-4
Alias Command .........................................................................................B-5
Config Command.......................................................................................B-7

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Date Command .......................................................................................B-10
Fallback Command.................................................................................. B-11
Group Command.....................................................................................B-12
Hardreset Command ...............................................................................B-16
Help Command........................................................................................B-17
History Command....................................................................................B-19
Hotreset Command .................................................................................B-20
Image Command.....................................................................................B-21
Lip Command ..........................................................................................B-22
Passwd Command ..................................................................................B-23
Ping Command........................................................................................B-24
Ps Command...........................................................................................B-25
Quit Command ........................................................................................B-26
Reset Command......................................................................................B-27
Security Command..................................................................................B-32
Securityset Command .............................................................................B-35
Set Command..........................................................................................B-37
Set Config Command ..............................................................................B-39
Set Log Command...................................................................................B-50
Set Port Command..................................................................................B-53
Set Setup Command ...............................................................................B-54
Show Command......................................................................................B-59
Show Config Command...........................................................................B-72
Show Log Command...............................................................................B-75
Show Perf Command ..............................................................................B-77
Show Setup Command............................................................................B-79
Shutdown Command ...............................................................................B-82
Test Command ........................................................................................B-83
Uptime Command....................................................................................B-86
User Command .......................................................................................B-87
Whoami Command..................................................................................B-90
Zone Command.......................................................................................B-91
Zoneset Command..................................................................................B-95
Zoning Command....................................................................................B-97
Glossary
Index

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Figures
Figure Page
2-1 SANbox2-16 Fibre Channel Switch................................................................................ 2-1
2-2 Chassis Controls and LEDS........................................................................................... 2-2
2-3 Chassis LEDs.................................................................................................................2-3
2-4 Fibre Channel Ports ....................................................................................................... 2-4
2-5 Port LEDs....................................................................................................................... 2-5
2-6 SFP Transceiver ............................................................................................................ 2-6
2-7 Ethernet Port .................................................................................................................. 2-7
2-8 Serial Port and Pin Identification.................................................................................... 2-8
2-9 Power Supply Components............................................................................................ 2-9
2-10 Fans ............................................................................................................................. 2-10
3-1 Cascade-with-a-Loop Topology ..................................................................................... 3-3
3-2 Mesh Topology............................................................................................................... 3-4
3-3 Multistage Topology ....................................................................................................... 3-5
3-4 Security Example: Switches and HBAs........................................................................ 3-12
3-5 Security Example: Management Server....................................................................... 3-14
4-1 SANbox2-16 Fibre Channel Switch................................................................................ 4-2
4-2 Installing Rack Mount Brackets...................................................................................... 4-5
4-3 Ethernet and Serial Cable Connections ......................................................................... 4-9
5-1 Logged-In LED ............................................................................................................... 5-5
5-2 Logged-In LED Indications............................................................................................. 5-5
5-3 Chassis and Power Supply LEDs .................................................................................. 5-9
6-1 SFP Transceiver Installation .......................................................................................... 6-2
6-2 Power Supply Removal.................................................................................................. 6-3
6-3 Fan Removal..................................................................................................................6-4
6-4 Fan Installation for Switch Model SB2A-16B ................................................................. 6-5

59021-07 A Page ix
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Tables
Table Page
2-1 Serial Port Pin Identification........................................................................................... 2-8
3-1 Port-to-Port Transmission Combinations ....................................................................... 3-7
3-2 Port-to-Port Latency ....................................................................................................... 3-7
4-1 Management Workstation Requirements....................................................................... 4-1
B-1 Command-Line Completion ...........................................................................................B-2
B-2 Commands Listed by Authority Level.............................................................................B-3
B-3 Group Member Attributes.............................................................................................B-12
B-4 Group Member Attributes.............................................................................................B-13
B-5 Switch Configuration Defaults ......................................................................................B-28
B-6 Port Configuration Defaults ..........................................................................................B-28
B-7 Alarm Threshold Configuration Defaults ......................................................................B-29
B-8 Zoning Configuration Defaults......................................................................................B-30
B-9 SNMP Configuration Defaults ......................................................................................B-30
B-10 System Configuration Defaults.....................................................................................B-31
B-11 Security Configuration Defaults....................................................................................B-31
B-12 Set Config Port Parameters .........................................................................................B-39
B-13 Security Configuration Parameters ..............................................................................B-41
B-14 Set Config Switch Parameters .....................................................................................B-42
B-15 Set Config Threshold Parameters................................................................................B-44
B-16 Set Config Zoning Parameters.....................................................................................B-45
B-17 SNMP Configuration Settings ......................................................................................B-54
B-18 System Configuration Settings.....................................................................................B-55
B-19 Show Port Parameters .................................................................................................B-61

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Notes

59021-07 A 1-1
Section 1
Introduction
This manual describes the features and installation of the SANbox2-16 Fibre
Channel switch, firmware version 3.0. This manual is organized as follows:
Section 1 describes the intended audience, related materials, safety notices,
communications statements, laser safety information, electrostatic discharge
sensitivity precautions, accessible parts, general program license, and
technical support.
Section 2 is an overview of the switch. It describes indicator LEDs and all
user controls and connections.
Section 3 describes the factors to consider when planning a fabric.
Section 4 explains how to install and configure the switch.
Section 5 describes the diagnostic methods and troubleshooting
procedures.
Section 6 describes the removal/replacement procedures for all field
replaceable units (FRUs).
Appendix A lists the switch specifications.
Appendix B describes the Command Line Interface.
Please read the communications statements and laser safety information later in
this section. Use this manual with the SANbox2-8c/16 Switch Management User’s
Guide.
1.1
Intended Audience
This manual introduces users to the switch and explains its installation and
service. It is intended for users who are responsible for installing and servicing
network equipment.

1 – Introduction
Related Materials
1-2 59021-07 A
D
1.2
Related Materials
The following manuals and materials are referenced in the text and/or provide
additional information.
SANbox2-8c/16 Switch Management User’s Guide, Publication Number
59022-07.
Fibre Channel-Arbitrated Loop (FC-AL-2) Rev. 6.8.
Fibre Channel-10-bit Interface Rev. 2.3.
Definitions of Managed Objects for the Fabric Element in Fibre Channel
Standard (draft-ietf-ipfc-fabric-element-mib-04.txt).
The Fibre Channel Standards are available from:
Global Engineering Documents, 15 Inverness Way East, Englewood, CO
80112-5776 Phone: [phone] or [phone]
Fax: [phone].

1 – Introduction
Safety Notices
59021-07 A 1-3
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1.3
Safety Notices
A Warning notice indicates the presence of a hazard that has the potential of
causing personal injury.
4-3, 4-6, 6-1
A Caution notice indicates the presence of a hazard that has the potential of
causing damage to the equipment.
4-4, 5-15, 6-4
1.4
Sicherheitshinweise
Ein Warnhinweis weist auf das Vorhandensein einer Gefahr hin, die
möglicherweise Verletzungen zur Folge hat.
4-3, 4-7, 6-1
Ein Vorsichtshinweis weist auf das Vorhandensein einer Gefahr hin, die
möglicherweise Geräteschäden zur Folge hat.
4-4, 5-15, 6-4
1.5
Notes informatives relatives à la sécurité
Une note informative Avertissement indique la présence d’un risque pouvant
entraîner des blessures.
4-3, 4-6, 6-1
Une note informative Attention indique la présence d’un risque pouvant entraîner
des dégâts matériels.
4-4, 5-15, 6-4

1 – Introduction
Communications Statements
1-4 59021-07 A
D
1.6
Communications Statements
The following statements apply to this product. The statements for other products
intended for use with this product appear in their accompanying manuals.
1.6.1
Federal Communications Commission (FCC) Class A Statement
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 generates, uses, and can
radiate radio frequency energy, and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area may cause unacceptable
interference, in which case the user will be required to correct the interference at
their own expense.
Neither the provider nor the manufacturer is responsible for any radio or television
interference caused by unauthorized changes or modifications to this equipment.
Unauthorized changes or modifications could void the user's authority to operate
the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:
This device may not cause harmful interference, and
This device must accept any interference received, including interference
that may cause undesired operation.
1.6.2
Canadian Department of Communications Class A Compliance
Statement
This equipment does not exceed Class A limits for radio emissions for digital
apparatus, set out in Radio Interference Regulation of the Canadian Department
of Communications. Operation in a residential area may cause unacceptable
interference to radio and TV reception requiring the owner or operator to take
whatever steps necessary to correct the interference.
1.6.3
Avis de conformité aux normes du ministère des Communications du
Canada
Cet équipement ne dépasse pas les limites de Classe A d'émission de bruits
radioélectriques por les appareils numériques, telles que prescrites par le
Réglement sur le brouillage radioélectrique établi par le ministère des
Communications du Canada. L'exploitation faite en milieu résidentiel peut

1 – Introduction
Communications Statements
59021-07 A 1-5
D
entraîner le brouillage des réceptions radio et télé, ce qui obligerait le propriétaire
ou l'opérateur à prendre les dispositions nécwssaires pour en éliminer les causes.
1.6.4
CE Statement
The CE symbol on the equipment indicates that this system complies with the
EMC (Electromagnetic Compatibility) directive of the European Community
(89/336/EEC) and to the Low Voltage (Safety) Directive (73/23/EEC). Such
marking indicates that this system meets or exceeds the following technical
standards:
EN60950/A11:1997 – “Safety of Information Technology Equipment,
Including Electrical Business Equipment”.
EN55022:1998 – “Limits and Methods of Measurement of Radio
Interference Characteristics of Information Technology Equipment”.
EN55024-1:1998 – “Electromagnetic compatibility - Generic immunity
standard Part 1: Residential commercial, and light industry.”
IEC1000-4-2:1995 – “Electrostatic Discharge Immunity Test”
IEC1000-4-3:1995 – “Radiated, Radio-Frequency, Electromagnetic
Field Immunity Test”
IEC1000-4-4:1995 – “Electrical Fast Transient/Burst Immunity Test”
IEC1000-4-5:1995 – “Surge Immunity Test”
IEC1000-4-6:1996 – “Immunity To Conducted Disturbances, Induced
By Radio-Frequency Fields”
IEC1000-4-8:1993 – "Power Frequency Magnetic Field Immunity Test”
IEC1000-4-11:1994 – “Voltage Dips, Short Interruptions And Voltage
Variations Immunity Tests”
EN61000-3-2:1995 – “Limits For Harmonic Current Emissions (Equipment
Input Current Less Than/Equal To 16 A Per Phase)” Class A
EN61000-3-3:1995 – “Limitation Of Voltage Fluctuations And Flicker In
Low-Voltage Supply Systems For Equipment With Rated Current Less Than
Or Equal To 16 A”

1 – Introduction
Communications Statements
1-6 59021-07 A
D
1.6.5
VCCI Class A Statement
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.
1.6.6
BSMI Class A Statement
Warning:
This is a Class A product. In a domestic environment, this product may cause
radio interference in which case the user will be required to take adequate
measures.

1 – Introduction
Laser Safety Information
59021-07 A 1-7
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1.7
Laser Safety Information
This product may use Class 1 laser optical transceivers to communicate over the
fiber optic conductors. The U.S. Department of Health and Human Services
(DHHS) does not consider Class 1 lasers to be hazardous. The International
Electrotechnical Commission (IEC) 825 Laser Safety Standard requires labeling in
English, German, Finnish, and French stating that the product uses Class 1
lasers. Because it is impractical to label the transceivers, the following label is
provided in this manual.
1.8
Electrostatic Discharge Sensitivity (ESDS) Precautions
The assemblies used in the switch chassis are ESD sensitive. Observe ESD
handling procedures when handling any assembly used in the switch chassis.

1 – Introduction
Accessible Parts
1-8 59021-07 A
D
1.9
Accessible Parts
The Field Replaceable Units (FRUs) in the SANbox2-16 switch are the following:
Small Form-Factor Pluggable (SFP) optical transceivers
Power supplies
Fans
Refer to Section 6 Removal/Replacement for more information.
1.10
Pièces Accessibles
Les pièces remplaçables, Field Replaceable Units (FRU), du commutateur
SANbox2-16 Fibre Channel Switch sont les suivantes:
Interfaces aux media d’interconnexion appelés SFP transceivers.
Alimentations de courant
Ventilateurs
Se reporter à la Section 6 (Procédures de retrait et remplacement) pour plus de
renseignements.
1.11
Zugängliche Teile
Nur die folgenden Teile im SANbox2-16 Fibre Channel Switch können
kundenseitig ersetzt werden:
Schnittstellen für die Zwischenverbindungsträger, SFP transceivers
genannt.
Netzteile
Gehäuselüfte
Weitere Informationen finden Sie im Abshcnitt 6(Ausbauen der ersetzbaren
Teile).

1 – Introduction
General Public License
59021-07 A 1-9
D
1.12
General Public License
QLogic Fibre Channel switches are powered by the Linux operating system. A
machine-readable copy of the Linux source code is available upon written request
to the following address. A nominal fee will be charged for reproduction, shipping,
and handling costs in accordance with the General Public License.
QLogic Corporation
6321 Bury Drive
Eden Prairie, MN 55346-1739
Attention: Technical Support - Source Request
Warning: Installation of software or files not authorized by QLogic will immediately
and irrevocably void all warranty and service contracts on the affected units.
The following general public license has been reproduced with permission from:
GNU General Public License
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
1.12.1
Preamble
The licenses for most software are designed to take away your freedom to share
and change it. By contrast, the GNU General Public License is intended to
guarantee your freedom to share and change free software--to make sure the
software is free for all its users. This General Public License applies to most of the
Free Software Foundation's software and to any other program whose authors
commit to using it. (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.) You can apply it to your
programs, too.
When we speak of free software, we are referring to freedom, not price. Our
General Public Licenses are designed to make sure that you have the freedom to
distribute copies of free software (and charge for this service if you wish), that you
receive source code or can get it if you want it, that you can change the software
or use pieces of it in new free programs; and that you know you can do these
things.
To protect your rights, we need to make restrictions that forbid anyone to deny you
these rights or to ask you to surrender the rights. These restrictions translate to
certain responsibilities for you if you distribute copies of the software, or if you
modify it.
For example, if you distribute copies of such a program, whether gratis or for a
fee, you must give the recipients all the rights that you have. You must make sure
that they, too, receive or can get the source code. And you must show them these
terms so they know their rights.

1 – Introduction
General Public License
1-10 59021-07 A
D
We protect your rights with two steps: (1) copyright the software, and (2) offer you
this license which gives you legal permission to copy, distribute and/or modify the
software.
Also, for each author's protection and ours, we want to make certain that
everyone understands that there is no warranty for this free software. If the
software is modified by someone else and passed on, we want its recipients to
know that what they have is not the original, so that any problems introduced by
others will not reflect on the original authors' reputations.
Finally, any free program is threatened constantly by software patents. We wish to
avoid the danger that redistributors of a free program will individually obtain patent
licenses, in effect making the program proprietary. To prevent this, we have made
it clear that any patent must be licensed for everyone's free use or not licensed at
all.
The precise terms and conditions for copying, distribution and modification follow.
1.12.2
Terms And Conditions For Copying, Distribution And Modification
1. This License applies to any program or other work which contains a notice
placed by the copyright holder saying it may be distributed under the terms
of this General Public License. The "Program", below, refers to any such
program or work, and a "work based on the Program" means either the
Program or any derivative work under copyright law: that is to say, a work
containing the Program or a portion of it, either verbatim or with
modifications and/or translated into another language. (Hereinafter,
translation is included without limitation in the term "modification".) Each
licensee is addressed as "you".
Activities other than copying, distribution and modification are not covered
by this License; they are outside its scope. The act of running the Program is
not restricted, and the output from the Program is covered only if its contents
constitute a work based on the Program (independent of having been made
by running the Program). Whether that is true depends on what the Program
does.
2. You may copy and distribute verbatim copies of the Program's source code
as you receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice and
disclaimer of warranty; keep intact all the notices that refer to this License
and to the absence of any warranty; and give any other recipients of the
Program a copy of this License along with the Program.
You may charge a fee for the physical act of transferring a copy, and you
may at your option offer warranty protection in exchange for a fee.
3. You may modify your copy or copies of the Program or any portion of it, thus
forming a work based on the Program, and copy and distribute such