Brocade Communications Systems Brocade 6520 User manual

53-1002705-01
15 December 2012
DRAFT: BROCADE CONFIDENTIAL
®
Brocade 6520
Hardware Reference Manual

DRAFT: BROCADE CONFIDENTIAL
Copyright © 2012 Brocade Communications Systems, Inc. All Rights Reserved.
Brocade, Brocade Assurance, the B-wing symbol, BigIron, DCX, Fabric OS, FastIron, MLX, NetIron, SAN Health, ServerIron,
TurboIron, VCS, and VDX are registered trademarks, and AnyIO, Brocade One, CloudPlex, Effortless Networking, ICX, NET Health,
OpenScript, and The Effortless Network are trademarks of Brocade Communications Systems, Inc., in the United States and/or in
other countries. Other brands, products, or service names mentioned may be trademarks of their respective owners.
Notice: This document is for informational purposes only and does not set forth any warranty, expressed or implied, concerning
any equipment, equipment feature, or service offered or to be offered by Brocade. Brocade reserves the right to make changes to
this document at any time, without notice, and assumes no responsibility for its use. This informational document describes
features that may not be currently available. Contact a Brocade sales office for information on feature and product availability.
Export of technical data contained in this document may require an export license from the United States government.
The authors and Brocade Communications Systems, Inc. shall have no liability or responsibility to any person or entity with
respect to any loss, cost, liability, or damages arising from the information contained in this book or the computer programs that
accompany it.
The product described by this document may contain “open source” software covered by the GNU General Public License or other
open source license agreements. To find out which open source software is included in Brocade products, view the licensing
terms applicable to the open source software, and obtain a copy of the programming source code, please visit
http://www.brocade.com/support/oscd.
Brocade Communications Systems, Incorporated
Document History
Corporate and Latin American Headquarters
Brocade Communications Systems, Inc.
130 Holger Way
San Jose, CA 95134
Tel: [phone]
Fax: [phone]
E-mail: inf[email protected]
Asia-Pacific Headquarters
Brocade Communications Systems China HK, Ltd.
No. 1 Guanghua Road
Chao Yang District
Units 2718 and 2818
Beijing 100020, China
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
European Headquarters
Brocade Communications Switzerland Sàrl
Centre Swissair
Tour B - 4ème étage
29, Route de l'Aéroport
Case Postale 105
CH-1215 Genève 15
Switzerland
Tel: [phone]
Fax: [phone]
E-mail: emea-i[email protected]
Asia-Pacific Headquarters
Brocade Communications Systems Co., Ltd. (Shenzhen WFOE)
Citic Plaza
No. 233 Tian He Road North
Unit 1308 – 13th Floor
Guangzhou, China
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Document Title Publication Number Summary of Changes Date
Brocade 6520 Hardware Reference Manual 53-1002705-01 New document December 2012

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Contents
About This Document
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
How this document is organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Supported hardware and software . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Document conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Text formatting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Command syntax conventions . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Command examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Notes, cautions, and warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Key terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Notice to the reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Additional information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Brocade resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Other industry resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Getting technical help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
ESD precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
Document feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
Chapter 1 Brocade 6520 Introduction
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Brocade 6520 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Platform capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Platform components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Port side of the Brocade 6520. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Non-port side of the Brocade 6520. . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 2 Brocade 6520 Installation and Configuration
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Items included with the Brocade 6520 . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation and safety considerations. . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Power supply specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Environmental considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Rack considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Recommendations for cable management . . . . . . . . . . . . . . . . . 7
Items required for installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

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Standalone installation for a Brocade 6520. . . . . . . . . . . . . . . . . . . . 8
Rack installation for a Brocade 6520 . . . . . . . . . . . . . . . . . . . . . . . . . 9
Brocade 6520 configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Providing power to the switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Creating a serial connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Switch IP address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Date and time settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Brocade Inter-Switch Link (ISL) Trunking . . . . . . . . . . . . . . . . . . 14
Chapter 3 Brocade 6520 Operation
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
LED activity interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Brocade 6520 LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
LED locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
LED patterns. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
POST and boot specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Boot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Interpreting POST results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Brocade 6520 maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Installing an SFP+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Brocade 6520 management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Chapter 4 Removal and replacement of power supplies and fans
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Before beginning installation . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Power supply removal and replacement . . . . . . . . . . . . . . . . . . . . . . 26
Determining the need to replace a power supply . . . . . . . . . . .26
Time and items required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Replacing a power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Fan removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Determining the need to replace a fan. . . . . . . . . . . . . . . . . . . . 29
Time required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Items required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Replacing a Brocade 6520 fan . . . . . . . . . . . . . . . . . . . . . . . . . . 30
SFP transceiver removal and replacement . . . . . . . . . . . . . . . . . . . . 31
Time and items required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Removing a transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Replacing a transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Appendix A Brocade 6520 Specifications
In this appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Weight and physical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

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General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Data transmission ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Memory specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Fibre Channel port specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Serial port specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Regulatory compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
FCC warning (US only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
KCC statement (Republic of Korea) . . . . . . . . . . . . . . . . . . . . . .38
VCCI statement Japan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Power cords (Japan Denan). . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
China. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
BSMI statement (Taiwan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
CE statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Canadian requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
German statement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Laser compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
RTC battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Electrical safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Regulatory certifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Environmental regulation compliance . . . . . . . . . . . . . . . . . . . . . . . . 42
China RoHS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Index

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About This Document
In this chapter
•How this document is organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
•Supported hardware and software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
•Document conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
•Notice to the reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
•Additional information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
•Getting technical help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
•Document feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
How this document is organized
This document is organized to help you find the information that you want as quickly and easily as
possible.
The document contains the following components:
•Chapter 1, “Brocade 6520 Introduction” provides an overview of the Brocade 6520 switch, a
feature list, and a look at the appearance of the switch.
•Chapter 2, “Brocade 6520 Installation and Configuration” provides the information needed to
install the switch into your network.
•Chapter 3, “Brocade 6520 Operation” discusses the day-to-day operational procedures for
using the switch.
•Chapter 4, “Removal and replacement of power supplies and fans” provides procedures for
removing and replacing the field-replaceable units (FRUs).
•Appendix A, “Brocade 6520 Specifications” provides tables of physical, environmental,and
general specifications, helpful for quick lookup.
•The Index points you to the exact pages on which specific information is located.
Supported hardware and software
Although many different software and hardware configurations are tested and supported by
Brocade Communications Systems, Inc. for Fabric OS 7.1.0, documenting all possible
configurations and scenarios is beyond the scope of this document.
This document includes information specific to the Brocade 6520 running Brocade Fabric OS
version 7.1.0. and later.

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Document conventions
This section describes text formatting conventions and important notice formats used in this
document.
Text formatting
The narrative-text formatting conventions that are used in this document are as follows:
bold text Identifies command names
Identifies GUI elements
Identifies keywords and operands
Identifies text to enter at the GUI or CLI
italic text Provides emphasis
Identifies variables
Identifies paths and Internet addresses
Identifies document titles
code text Identifies CLI output
Identifies syntax examples
For readability, command names in the narrative portions of this guide are presented in mixed
lettercase: for example, switchShow. In actual examples, command lettercase is often all
lowercase. Otherwise, this manual specifically notes those cases in which a command is
case-sensitive.
Command syntax conventions
Command syntax in this manual follows these conventions:
command Commands are printed in bold.
--option, option Command options are printed in bold.
-argument, arg Arguments.
[ ] Optional element.
variable Variables are printed in italics. In the help pages, values are underlined or
enclosed in angled brackets < >.
... Repeat the previous element, for example “member[;member...]”
value Fixed values following arguments are printed in plain font. For example,
--show WWN
| Boolean. Elements are exclusive. Example: --show -mode egress | ingress

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Command examples
This book describes how to perform configuration tasks using the Fabric OS command line
interface, but does not describe the commands in detail. For complete descriptions of all Fabric OS
commands, including syntax, operand description, and sample output, refer to the Fabric OS
Command Reference.
Notes, cautions, and warnings
The following notices and statements are used in this manual. They are listed below in order of
increasing severity of potential hazards.
NOTE
A note provides a tip, guidance, or advice, emphasizes important information, or provides a
reference to related information.
ATTENTION
An Attention statement indicates potential damage to hardware or data.
CAUTION
A Caution statement alerts you to situations that can be potentially hazardous to you or cause
damage to hardware, firmware, software, or data.
DANGER
A Danger statement indicates conditions or situations that can be potentially lethal or extremely
hazardous to you. Safety labels are also attached directly to products to warn of these conditions
or situations.
Key terms
For definitions specific to Brocade and Fibre Channel, see the technical glossaries on MyBrocade.
See “Brocade resources” on page x for instructions on accessing MyBrocade.
For definitions of SAN-specific terms, visit the Storage Networking Industry Association online
dictionary at: (For IP, add link to an online dictionary, if available, otherwise delete. Be sure to test
link if added.)
http://www.snia.org/education/dictionary

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Notice to the reader
This document may contain references to the trademarks of the following corporations. These
trademarks are the properties of their respective companies and corporations.
These references are made for informational purposes only.
Additional information
This section lists additional Brocade and industry-specific documentation that you might find
helpful.
Brocade resources
To get up-to-the-minute information, go to http://my.brocade.com to register at no cost for a user ID
and password.
White papers, online demonstrations, and data sheets are available through the Brocade website
at:
http://www.brocade.com/products-solutions/products/index.page
For additional Brocade documentation, visit the Brocade website:
http://www.brocade.com
Release notes are available on the MyBrocade website and are also bundled with the Fabric OS
firmware.
Other industry resources
For additional resource information, visit the Technical Committee T11 website. This website
provides interface standards for high-performance and mass storage applications for Fibre
Channel, storage management, and other applications:
http://www.t11.org
For information about the Fibre Channel industry, visit the Fibre Channel Industry Association
website:
Corporation Referenced Trademarks and Products
Microsoft Corporation Windows, Windows NT, Internet Explorer
Oracle Corporation Oracle, Java
Netscape Communications Corporation Netscape
Red Hat, Inc. Red Hat, Red Hat Network, Maximum RPM, Linux Undercover
Velcro Industries B.V. Velcro

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http://www.fibrechannel.org
For information about the Ethernet industry, visit the Internet Engineering Task Force website:
http://www.ietf.org
Getting technical help
Contact your switch support supplier for hardware, firmware, and software support, including
product repairs and part ordering. To expedite your call, have the following information available:
1. General Information
•Switch model
•Switch operating system version
•Error numbers and messages received
•supportSave command output
•Detailed description of the problem, including the switch or fabric behavior immediately
following the problem, and specific questions
•Description of any troubleshooting steps already performed and the results
•Serial console and Telnet session logs
•syslog message logs
2. Switch Serial Number
The switch serial number and corresponding bar code are provided on the serial number label,
as illustrated below.:
The serial number label is located as follows:
•Brocade 6520—On the switch ID pull-out tab located inside the chassis on the port side on
the left
3. World Wide Name (WWN)
Use the wwn command to display the switch WWN.
If you cannot use the wwn command because the switch is inoperable, you can get the WWN
from the same place as the serial number.
'"!&'
FT00X0054E9

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ESD precautions
The Brocade 6520 contains electrostatic discharge (ESD) sensitive FRUs. When working with any
Brocade 6520 FRU, use correct ESD procedures.
•Wear a wrist grounding strap connected to chassis ground (if the Brocade 6520 is plugged
in) or a bench ground.
•Store ESD-sensitive components in antistatic packaging.
Document feedback
Because quality is our first concern at Brocade, we have made every effort to ensure the accuracy
and completeness of this document. However, if you find an error or an omission, or you think that
a topic needs further development, we want to hear from you. Forward your feedback to:
[e-mail]
Provide the title and version number and as much detail as possible about your comment,
including the topic heading and page number and your suggestions for improvement.

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Chapter
1
Brocade 6520 Introduction
In this chapter
•Brocade 6520 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
•Port side of the Brocade 6520 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
•Non-port side of the Brocade 6520 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Brocade 6520 overview
The Brocade 6520 is a 96-port auto-sensing 2, 4, 8, or 16 Gbps as well as 10 Gbps Fibre Channel
(FC) switch that delivers the latest Brocade single-chip architecture for Fibre Channel Storage Area
Networks (SANs). The Brocade 6520 is an enterprise-class switch that is designed to handle the
large-scale SAN requirements of an enterprise, and can also be used to address the SAN
requirements of a small to medium-sized workgroup.
The Brocade 6520 provides up to 96 ports in a double (2U) height switch that enables the creation
of very dense fabrics in a relatively small space.
The Brocade 6520 offers Ports on Demand (POD) licensing as well. “Base” models of the switch
contain 48 ports, and up to two additional 24-port POD licenses can be purchased to fill out all 96
ports. The Brocade 6520 provides excellent overall value as the foundation of a SAN with the ability
to grow with an organization’s SAN needs.
The first eight ports can be configured to run at 10 Gbps with the appropriate licensing.
The Brocade 6520 supplies Reliability, Availability, and Serviceability (RAS) performance and
scalability requirements of an enterprise switch along with interoperability and ease-of-use
advantages.
The Brocade 6520 is less than 18 inches deep, allowing for greater installation flexibility. It also
has airflow direction options. You can order either port side exhaust (the default configuration) or
non-port side exhaust airflow to accommodate specific installations.
Platform capabilities
The Brocade 6520 offers the following features and capabilities:
•Up to 96 auto-sensing ports of high-performance 16 Gbps technology in a single domain.
•Ports on Demand scaling from 48 to 72 or 96 ports.
•2, 4, 8, and 16 Gbps auto-sensing Fibre Channel switch and router ports.
-2, 4, and 8 Gbps performance is enabled by 8 Gbps SFP+ transceivers.
-4, 8, and 16 Gbps performance is enabled by 16 Gbps SFP+ transceivers.

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•10 Gbps manual set capability on FC ports (requires the optional 10 Gigabit FCIP/Fibre
Channel license) on the first eight ports only.
-Ports can be configured for 10 Gbps for metro connectivity.
-10 Gbps performance is enabled by 10 Gbps SFP+ transceivers.
•Universal ports self-configure as E, F, M, or D ports. EX_Ports can be activated on a per port
basis with the optional Integrated Routing license.
-Brocade Diagnostic Port (D-Port) feature provides physical media diagnostic,
troubleshooting and verification services.
•In-flight data compression and encryption on up to two ports provides efficient link utilization
and security.
•Options for port side exhaust (default) or non-port side exhaust airflow for cooling.
•Virtual Fabric support to improve isolation between different VFs.
•Fibre Channel Routing (FCR) service, available with the optional Integrated Routing license
provides improved scalability and fault isolation.
•Inter-Switch Link (ISL) Trunking (licensable), which allows up to eight ports (at 2, 4, 8, or 16
Gbps speeds) between a pair of switches combined to form a single, logical ISL with a speed of
up to 128 Gbps (256 Gbps full duplex) for optimal bandwidth utilization and load balancing.
There is no limit to how many trunk groups can be configured.
•Dynamic Path Selection (DPS), which optimizes fabric-wide performance and load balancing by
automatically routing data to the most efficient available path in the fabric.
•Brocade-branded SFP+ optical transceivers that support any combination of Short Wavelength
(SWL) and Long Wavelength (LWL) or Extended Long Wavelength (ELWL) optical media among
the switch ports.
•Extended distance support enables native Fibre Channel extension up to 7,500 km at 2 Gbps.
•Support for unicast data traffic types.
•Brocade Fabric OS, which delivers distributed intelligence throughout the network and enables
a wide range of value-added applications including Brocade Advanced Web Tools and Brocade
Zoning. Optional Fabric Services include: Adaptive Networking with QoS, Brocade Extended
Fabrics, Brocade Enhanced Group Management, Brocade Fabric Watch, ISL Trunking, and
End-to-End Performance Monitoring (APM).
•Hardware zoning is accomplished at the port level of the switch and by World Wide Name
(WWN). Hardware zoning permits or denies delivery of frames to any destination port address.
•Extensive diagnostics and system-monitoring capabilities for enhanced high Reliability,
Availability, and Serviceability (RAS).
•10G Fibre Channel integration on the same port provides for DWDM metro connectivity on the
same switch (can be done on first eight ports only (with appropriate licensing).
•The Brocade EZSwitchSetup wizard that makes SAN configuration a three-step point-and-click
task.
•Real time power monitoring enables users to monitor real time power usage of the fabric at a
switch level.
•Port-to-port latency minimized to 1400 nanoseconds through the use of cut-through frame
routing at 16 Gbps.

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DRAFT: BROCADE CONFIDENTIAL
Platform components
•A system motherboard that features a primary CPU running at 1.25 GHz, with integrated
peripherals, and that provides high performance with low power consumption.
•One 2 GB DDR2 running at 400 MHz.
•Boot memory of 8 MB. Expandable to 16GB.
•One 2 GB compact flash card.
•Up to 96 16 Gbps Fibre Channel ports.
•An RJ45 10/100/1000 BaseT Ethernet system management port (RJ45 connector), in
conjunction with EZSwitchSetup, that supports switch IP address discovery and configuration,
eliminating the need to attach a serial cable to configure the switch IP address and greatly
increasing the ease of use.
•One RS-232 console (serial) port with RJ45 connector for initial switch setup (if not using
EZSwitch Setup) and factory default restoration. (the integral LEDs remain unlit at all times)
•One USB 2.0 port that provides storage for firmware updates, output of the supportSave
command and storage for configuration uploads and downloads.
•Two hot-swappable, redundant power supplies (power supplies are 80+ Platinum certified for
efficiency)
•Three hot-swappable fan FRUs.
•Rack-mount design (2U form factor) in a 19-inch EIA rack.
•One LED (green/amber) per FC port to indicate status.
•One LED (green) for system power.
•One LED (green/amber) for system status.
•Two Ethernet LEDs (integrated with RJ45) for speed and activity status.
•Two LEDs per power supply. One green for AC line in status and one green/amber for DC power
out.
•One LED (green) per fan.
•SEEPROM for switch identification.
•Voltage monitoring.
•Fan monitoring including flow direction.
•Temperature monitoring.
•Real-time clock (RTC) with battery.
Port side of the Brocade 6520
The port side of the Brocade 6520 includes the system status LED, console port, Ethernet port and
LEDs, USB port, and Fibre Channel ports and the corresponding port status LEDs.
Figure 1 shows the port side of the Brocade 6520.

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Non-port side of the Brocade 6520
1
DRAFT: BROCADE CONFIDENTIAL
FIGURE 1 Port side view of the Brocade 6520
NOTE
The two LEDs on the serial console port are non-functional.
Non-port side of the Brocade 6520
Figure 2 shows the non-port side of the Brocade 6520, which contains the power supplies
(including the AC power receptacle) and fans.
FIGURE 2 Non-port side of the Brocade 6520
1 System status LED 6 FC ports 48-95
2 System power LED 7 Switch ID pull-out tab
3 USB port 8 Management Ethernet port with LEDs
4 FC ports 0-7 (all LEDs above) 9 Serial console port
5FCports8-47
1 Power supplies 2 Fans

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Chapter
2
Brocade 6520 Installation and Configuration
In this chapter
•Items included with the Brocade 6520 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
•Installation and safety considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
•Standalone installation for a Brocade 6520 . . . . . . . . . . . . . . . . . . . . . . . . . . 8
•Rack installation for a Brocade 6520 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
•Brocade 6520 configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Items included with the Brocade 6520
The following items are included with the standard shipment of a fully-configured Brocade 6520.
When you open the Brocade 6520 packaging, verify that these items are included in the package
and that no damage has occurred during shipping:
•The Brocade 6520 switch, containing two power supplies and three fans (incorporating either
non-port side exhaust or port side exhaust airflow as ordered - airflow labels on the non-port
side exhaust assemblies)
•16 Gbps or 8 Gbps SFP+ modules for the Fibre Channel ports (speed and quantity as ordered)
•One accessory kit, containing the following items:
•Serial cable with an RJ45 connector
•Two 6 ft. Power Cords
•Rubber feet, required for setting up the switch as a standalone unit
•Brocade 6520 EZSwitch Setup poster
•EZSwitch Setup CD
DANGER
The procedures in this manual are for qualified service personnel.
Installation and safety considerations
You can install the Brocade 6520 switch in the following ways:
1. As a standalone unit on a flat surface.
2. In an EIA rack using a four-post, fixed-position rack mount kit. The rack mount kit can be
ordered from your switch retailer.

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2
DRAFT: BROCADE CONFIDENTIAL
3. In an two-post Telco rack using the mid-mount rack kit for switches. The mid-mount rack
kit for switches can be ordered from your switch retailer.
4. In an EIA rack using a four-post sliding rail rack kit. The sliding rail rack mount kit can be
ordered from your switch retailer.
Electrical considerations
To install and operate the switch successfully, ensure the following:
•The primary outlets are correctly wired, protected by a circuit breaker, and grounded in
accordance with local electrical codes.
•The supply circuit, line fusing, and wire size are adequate, as specified by the electrical
rating on the switch nameplate.
•The power supply standards provided in Table 1, “Power Supply Specifications” are met.
Power supply specifications
The power supplies are universal and capable of functioning worldwide without voltage jumpers or
switches. They meet IEC 61000-4-5 surge voltage requirements and are autoranging in terms of
accommodating input voltages and line frequencies. Each power supply has built-in fans for
cooling.
Table 1 lists the power supply specifications for the Brocade 6520.
Environmental considerations
For successful installation and operation of the switch, ensure that the following environmental
requirements are met:
•At a minimum, adequate cooling requires that you install the switch with the intake side,
as indicated by the airflow direction of the fan assemblies, facing the cool-air aisle.
•All equipment in the rack should force air in the same direction to avoid intake of exhaust
air.
•A maximum of 102 cubic meters/hour (60 cubic feet/minute) and a minimum of 74.8
cubic meters/hour (44 cubic feet/minute) of air flow is available for air intake.
TABLE 1 Power Supply Specifications
Specification Value
Input voltage Range: 85-264 VAC Auto-volt, Nominal: 100-240 VAC, ~5.0A - 2.5A;
switch autosenses input voltage.
Input frequency Range: 47-63 Hz; Nominal: 50-60 Hz.
Inrush current Limited to 40A peak @ 240Vac for any initial current surge or spike
of 10ms or less at cold start-up at 25º C ambient.
Input line protection Both AC lines are fused.
Maximum power supply output (each) 1100 watts @ 12V DC
Maximum current 41.4A @ 12V DC.
System power consumption (240VAC input) 456 W with all 96 ports populated with 16 Gbps SWL optics
247 W with empty chassis and no optics.

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•The ambient air temperature does not exceed 40°C (104°F) while the switch is operating.
Table 2 lists the acceptable environmental ranges for both operating and nonoperating (such as
during transportation or storage) conditions.
Rack considerations
For successful installation and operation of the switch in a rack, ensure the following rack
requirements are met:
•The rack must be a standard EIA rack.
•A rack space that is two rack units (2U) high; 8.90 cm (3.50 inches) high and 48.3 cm (19
inches) wide.
•The equipment in the rack is grounded through a reliable branch circuit connection and
maintain ground at all times. Do not rely on a secondary connection to a branch circuit,
such as a power strip.
•Airflow and temperature requirements are met on an ongoing basis, particularly if the
switch is installed in a closed or multirack assembly.
•The additional weight of the switch does not exceed the rack’s weight limits or unbalance
the rack in any way.
•The rack is secured to ensure stability in case of unexpected movement, such as an
earthquake.
Recommendations for cable management
The minimum bend radius for a 50 micron cable is 2 inches under full tensile load and 1.2 inches
with no tensile load.
Cables can be organized and managed in a variety of ways, for example, using cable channels on
the sides of the rack or patch panels to minimize cable management. Following is a list of
recommendations:
TABLE 2 Environmental requirements
Condition Acceptable during operation Acceptable During Non-Operation
Ambient
Temperature
0º to 40º C (32º to 104º F) -25º to 70º C (-13º to 158º F)
Humidity 10% to 85% RH non-condensing, at
40º C (104º F)
10% to 90% RH non-condensing, at 70º C
(158º F)
Altitude 0 to 3 km (9,842 feet) above sea level 0 to 12 km (39,370 feet) above sea level
Shock 20 G, 6 ms, half-sine wave 33 G, 11 ms, half-sine wave, 3/eg Axis
Vibration 0.5 G sine, 0.4 gms random, 5-500 Hz 2.0 G sine, 1.1 gms random, 5-500 Hz
Air flow Maximum - 186.89 cmh (110 cfm)
Nominal - ??.?? cmh (?? cfm)
NOTE: Airflow can be Forward or Reverse
depending on purchased option
NA
Heat dissipation 843.03 BTU/hr (no optics configuration)
1556.36 BTU/hr (fully populated port
configuration)
NA

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DRAFT: BROCADE CONFIDENTIAL
NOTE
You should not use tie wraps with optical cables because they are easily overtightened and can
damage the optic fibers.
•Plan for rack space required for cable management before installing the switch.
•Leave at least 1 m (3.28 ft) of slack for each port cable. This provides room to remove and
replace the switch, allows for inadvertent movement of the rack, and helps prevent the
cables from being bent to less than the minimum bend radius.
•If you are using Brocade ISL Trunking, consider grouping cables by trunking groups. The
cables used in trunking groups must meet specific requirements, as described in the
Fabric OS Administrator’s Guide.
•For easier maintenance, label the fiber optic cables and record the devices to which they
are connected.
•Keep LEDs visible by routing port cables and other cables away from the LEDs.
•Use Velcro-style straps to secure and organize fiber optic cables.
Items required for installation
The following items are required for installing, configuring, and connecting the Brocade 6520 for
use in a network and fabric:
•Workstation with an installed terminal emulator, such as HyperTerminal
•Unused IP address and corresponding subnet mask and gateway address
•Serial cable (provided) if not using EZSwitch Setup
•Ethernet cable
•Brocade-branded SFP+s and compatible cables (Brocade-branded 16 Gbps SFP+s
required for 16 Gbps performance), as required
•Access to an FTP server or USB device for backing up the switch configuration (optional)
Standalone installation for a Brocade 6520
Perform this task to install the Brocade 6520 as a standalone unit.
1. Unpack the Brocade 6520 and verify the items listed on “Items included with the Brocade
6520” on page 5. Verify the items are present and undamaged.
2. Apply the adhesive rubber feet. Applying the rubber feet onto the switch helps prevent the
switch from sliding off the supporting surface.
a. Clean the indentations at each corner of the bottom of the switch to ensure that they are
free of dust or other debris that might lessen the adhesion of the feet.
b. With the adhesive side against the chassis, place one rubber foot in each indentation and
press into place.
3. Place the switch on a flat, sturdy surface.
4. Provide power to the switch as described in “Providing power to the switch” on page 9.