Brocade Communications Systems Brocade VDX 6740 Quick user guide

53-1002829-02
14 February 2014
®
Brocade VDX 6740
Hardware Reference Manual
Supporting the Brocade VDX 6740, VDX 6740T, and VDX 6740T-1G

Copyright © 2014 Brocade Communications Systems, Inc. All Rights Reserved.
Brocade, the B-wing symbol, Brocade Assurance, ADX, AnyIO, DCX, Fabric OS, FastIron, HyperEdge, ICX, MLX, MyBrocade, NetIron,
OpenScript, VCS, VDX, and Vyatta are registered trademarks, and The Effortless Network and the On-Demand Data Center are
trademarks of Brocade Communications Systems, Inc., in the United States and in other countries. Other brands and product
names mentioned may be trademarks of others.
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. assume no liability or responsibility to any person or entity with respect
to the accuracy of this document or any loss, cost, liability, or damages arising from the information contained herein 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]
Title Publication number Summary of changes Date
Brocade VDX 6740 Hardware Reference
Manual
53-1002929-01 New document July 2013
Brocade VDX 6740 Hardware Reference
Manual
53-1002829-02 Revised with information for
Brocade 6740T-1G
February 2014

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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
Notes, cautions, and warnings . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Key terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Notice to the reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Additional information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Brocade resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ix
Other industry resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Getting technical help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Document feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Chapter 1 Brocade VDX 6740 Introduction
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Brocade VDX 6740 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Platform components and capabilities. . . . . . . . . . . . . . . . . . . . . 2
Software features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Views of the Brocade VDX 6740 switches. . . . . . . . . . . . . . . . . . . . . . 5
Chapter 2 Brocade VDX 6740 Installation
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Items included with the Brocade VDX 6740 switches . . . . . . . . . . . . 7
Installation and safety considerations. . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Environmental considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Rack considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Recommendations for cable management . . . . . . . . . . . . . . . . . 9
Items required for installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Standalone installation for the Brocade VDX 6740 switches . . . . . 10
Rack installation options for the Brocade VDX 6740 switches . . . . 10
Providing power to the switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Verifying operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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Chapter 3 Brocade VDX 6740 Configuration
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Configuration for the Brocade VDX 6740 switches. . . . . . . . . . . . . .13
Creating a serial connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Permanent password assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Changing the default account passwords . . . . . . . . . . . . . . . . . 15
Setting the switch IP address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Using DHCP to set the IP address. . . . . . . . . . . . . . . . . . . . . . . .15
Setting a static IP address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Stateless IPv6 autoconfiguration . . . . . . . . . . . . . . . . . . . . . . . . 16
Setting stateless IPv6 autoconfiguration . . . . . . . . . . . . . . . . . . 17
Changing the RBridge ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Changing the VCS ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Date and time on the Brocade VDX 6740 . . . . . . . . . . . . . . . . . . . . .18
Time zones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Time synchronization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Synchronizing local time using NTP . . . . . . . . . . . . . . . . . . . . . .19
Setting the clock (date and time) manually . . . . . . . . . . . . . . . .19
Setting time zones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Network device connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Ethernet or Fast Ethernet hubs. . . . . . . . . . . . . . . . . . . . . . . . . .20
Workstations, servers, or routers . . . . . . . . . . . . . . . . . . . . . . . .20
Network device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Testing connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Brocade inter-switch link trunks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Upgrading port speeds on the Brocade VDX 6740T-1G . . . . . . . . . . 21
Chapter 4 Brocade VDX 6740 Operation
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
LED activity interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Brocade VDX 6740 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
LED locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
LED patterns. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
POST and boot specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Boot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Interpreting POST results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Powering off the Brocade VDX 6740 switches . . . . . . . . . . . . . . . . . 31
Brocade VDX 6740 maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Supported transceivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Installing an SFP+ transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Diagnostic tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Brocade VDX 6740 management . . . . . . . . . . . . . . . . . . . . . . . . . . .33

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Chapter 5 Brocade VDX 6740 FRU Replacement Procedures
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Before beginning the installation. . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Combined FRU replacement in a Brocade VDX 6740 . . . . . . . . . . .36
Time and items required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Replacing the power supply and fan assembly . . . . . . . . . . . . . 37
Power supply replacement in a Brocade 6740T and 6740T-1G . . .39
Determining the need to replace a power supply . . . . . . . . . . .40
Time and items required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Replacing the power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Fan replacement in a Brocade VDX 6740T and Brocade VDX 6740T-1G
42
Determining the need to replace a fan. . . . . . . . . . . . . . . . . . . .43
Time and items required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Replacing the fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Appendix A Brocade VDX 6740 Specifications
In this appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Weight and physical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Facility requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Power supply specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Environmental requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Data transmission ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Memory specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Regulatory compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
FCC warning (US only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Germany . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
KCC statement (Republic of Korea) . . . . . . . . . . . . . . . . . . . . . .50
VCCI statement (Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Power cords (Japan DENAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
BSMI statement (Taiwan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
CE statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Canadian requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
China statement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Laser compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Regulatory certifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Environmental regulation compliance . . . . . . . . . . . . . . . . . . . . . . . .54
China RoHS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Environmental protection use period (EPUP) disclaimer. . . . . .54
TS/HS dual language sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Appendix B Caution and Danger Notices
In this appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

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Caution notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Danger notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Electrical cautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
RTC battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Electrical safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
•Additional information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
•Getting technical help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
•Document feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
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 VDX 6740 Introduction” provides an overview of the Brocade VDX 6740
switch.
•Chapter 2, “Brocade VDX 6740 Installation” provides the information needed to install the
switch into your network.
•Chapter 3, “Brocade VDX 6740 Configuration” lays out the tasks and commands necessary to
get the switch up and running.
•Chapter 4, “Brocade VDX 6740 Operation” discusses the day-to-day operational procedures for
using the switch.
•Chapter 5, “Brocade VDX 6740 FRU Replacement Procedures” provides procedures for
removing and replacing the field-replaceable units (FRUs), including the fan assemblies and
power supplies.
•Appendix A, “Brocade VDX 6740 Specifications” provides tables of physical, environmental,
and general specifications.
Supported hardware and software
This document is specific to the Brocade VDX 6740, Brocade VDX 6740T, and Brocade VDX
6740T-1G under Network OS v4.1.0 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 are as follows:
bold text Identifies command names
Identifies the names of user-manipulated 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 command syntax examples
Command syntax conventions
Command syntax in this manual follows these conventions:
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.
command Commands are printed in bold.
[ ] 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 environment temp rbridge 30
| Boolean. Elements are exclusive. Example: show environment fan [rbridge-id
{rbridge-id | all}]

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CAUTION
A caution calls your attention to a possible hazard that can damage equipment.
DANGER
A danger calls your attention to a possible hazard that can cause injury or death.
Key terms
For definitions specific to Brocade and Fibre Channel, refer to the Brocade Glossary.
For definitions of SAN-specific terms, visit the Storage Networking Industry Association online
dictionary at:
http://www.snia.org/education/dictionary
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.
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
Corporation Referenced Trademarks and Products
Microsoft Corporation Windows, Windows NT, Internet Explorer
Oracle Corporation Sun, Solaris
Netscape Communications Corporation Netscape
Red Hat, Inc. Red Hat, Red Hat Network, Maximum RPM, Linux Undercover
Velcro Industries B.V. Velcro

xBrocade VDX 6740 Hardware Reference Manual
53-1002829-02
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 Network 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:
http://www.fibrechannel.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 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 for the Brocade VDX 6740 switches is located on the switch ID pull-out
tab located on the bottom left of the port side of the switch

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Document feedback
Quality is our first concern at Brocade and 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 of the document 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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Brocade VDX 6740 Hardware Reference Manual 1
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Chapter
1
Brocade VDX 6740 Introduction
In this chapter
•Brocade VDX 6740 overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
•Views of the Brocade VDX 6740 switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Brocade VDX 6740 overview
The Brocade VDX 6740 switches are top-of-rack, Gigabit Ethernet (GbE) line-rate, low latency,
lossless Data Center Bridging (DCB) switches:
•The Brocade VDX 6740 offers SFP+ ports for its 1/10 GbE interfaces. Base models contain 24
Ethernet ports operating at 1 Gbps, 10 Gbps, or in auto-sensing mode. A 10G Port Upgrade
license can add 1/10G ports in increments of 8, 16, and 24 ports. A 40G Port Upgrade license
can be added for either two or four 40 GbE ports.
•The Brocade VDX 6740T offers 1/10G Base-T (RJ-45) ports and additional 40 GbE QSFP ports.
Base models contain 24 Ethernet ports operating at 100 Mbps, 1 Gbps, 10 Gbps, or in
auto-sensing mode. A 10G Port Upgrade license can add ports in increments of 8, 16, and 24
ports. A 40G Port Upgrade license can be added for either two or four 40 GbE ports.
•The Brocade VDX 6740T-1G offers 1G Base-T (RJ-45) ports and additional 40 GbE QSFP ports.
Base models are fully populated with 48 Base-T ports operating at 100 Mbps, 1 Gbps, or in
auto-sensing mode. A 10G Port Upgrade license enables RJ-45 port operation at 10 Gbps. This
license can be applied in increments of 16, 32, and 48 ports. The Brocade VDX 6740T-1G
ships standard with two 40 GbE ports. A 40G Port Upgrade license can be added for two
additional 40 GbE ports.
Each 40 GbE port can be reconfigured as four 10 GbE ports in QSFP breakout mode. Thus, the
Brocade VDX 6740 switches can be configured with as many as 64 10 GbE ports.
The Brocade VDX 6740 switches run on the Brocade Network Operating System (Network OS)
v4.0.0 or later. The 100 Mbps speed for Base-T ports on Brocade VDX 6740T and Brocade VDX
6740T-1G switches is available with Brocade Network OS v4.1.0 and later. For details about
Network OS, refer to the Brocade Network OS Administrator’s Guide.
A key feature of the Brocade VDX 6740 switches is Brocade VCS™ technology, which includes
virtual cluster switching, a new set of technologies that allows users to create flatter, virtualized,
and converged data center networks. VCS fabrics are scalable, permitting users to expand at their
own pace, and simplified, allowing users to manage the fabric as a single entity. VCS-based
Ethernet fabrics are convergence-capable with technologies such as Fibre Channel over Ethernet
(FCoE) for storage.

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Brocade VDX 6740 overview
1
Platform components and capabilities
The Brocade VDX 6740 switches offer the following features and capabilities:
•A system motherboard that features a Reduced Instruction Set Computer (RISC) CPU running
at 1.5 GHz with integrated peripherals
•An RJ-45 10/100/1000 Ethernet out-of-band management port
•An RJ-45-fronted serial (RS-232) port for terminal access and debugging
•A mini-USB-fronted serial (RS-232) port for terminal access and debugging (Brocade VDX
6740T and Brocade VDX 6740T-1G only)
•A USB port for firmware upgrades and system log downloads
•Up to 48 1/10 GbE optical or copper SFP+ ports in the Brocade VDX 6740 and 48 1/10G
Base-T copper ports in the Brocade VDX 6740T
•Forty-eight 1G Base-T copper ports on the Brocade VDX 6740T-1G, which can be upgraded to
1/10G operation through 10G Port Upgrade licensing
•100 Mbps operation on Brocade VDX 6740T and Brocade VDX 6740T-1G 1/10 Base-T ports
(Network OS v4.1.0 and later).
NOTE
100 Mbps ports are intended for point to point connection to a management server and not as
data ports.
•Up to four 40 GbE QSFP ports (can be configured into four 10 GbE ports each)
•Dual, hot-swappable 250W AC power supplies with three integrated cooling fans each (for the
Brocade VDX 6740 only, can be ordered with front-to-back or back-to-front airflow)
•Dual, hot-swappable 500W AC power supplies and five separate, hot-swappable fan units (for
the Brocade VDX 6740T only, can be ordered with front-to-back or back-to-front airflow)
•Support for short-range, long-range, extended range optical, and twinaxial copper SFP+ 10
GbE transceivers (Brocade VDX 6740)
•Support for 1, 3, and 5 meter 1G or 10G Base-T direct attach copper cables (Brocade VDX
6740T and Brocade VDX 6740T-1G)
•Support for short-range and long-range QSFP 40 GbE transceivers
•Support for optical or twinaxial breakout cable when 40 GbE ports are configured for 4x10 GbE
•Support for long-range and short-range SFP+ 10GbE transceivers
•Support for inter-switch link (ISL) Brocade Trunking (10 GbE ports only).
•A reduced-depth, rack-mount design using existing rail kits - four-post fixed or Telco flush and
mid-mount rack mount kits (Brocade VDX 6740 only)
•New universal 4-post and 2-post rack mount kits (Brocade VDX 6740T only)
•Extensive diagnostics and system-monitoring capabilities for enhanced high Reliability,
Availability, and Serviceability (RAS)
•Optimized airflow (a choice of front-to-back or back-to-front flow)
•A real-time clock (RTC) with battery
•SEEPROM for switch identification
•Voltage monitoring
•Fan monitoring

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Brocade VDX 6740 overview 1
•Four temperature sensors (Brocade VDX 6740 only)
•Two temperature sensor (Brocade VDX 6740T only)
•I2C interface to monitor and control environmental aspects
NOTE
Port numbering for the Brocade VDX 6740 switches begins with 1, not 0.
Software features
The Brocade VDX 6740 switches support the following features. For more details on these features,
refer to the Brocade Network OS Administrator’s Guide.
Layer 2 and Layer 3 features
•VLANs
•Spanning Tree Protocol (STP, RSTP, MSTP, and PVST+ and PVRST+)
•Support for unicast and multicast capabilities
•Support for IGMP snooping
•Layer 2 multi-path based on Transparent Interconnection of Lots of Links (TRILL)
•Layer 2 access control lists (ACLs)
•Switch Port Analyzer (SPAN) (also known as port mirroring - PM)
•Remote Switch Port Analyzer (RSPAN - SPAN across VCS)
•Layer 3 PIM multicast, ACL
Virtualization
•Automatic Migration of Port Profiles (AMPP)
•Support for VLAN, QoS, security, and FCoE port profiles
Link aggregation
•802.3ad Link Aggregation Control Protocol (LACP) support
•Virtual Link Aggregation Group (vLAG) (a LAG that spans multiple physical switches)
QoS
•802.1p marking
•Eight queues per port
•Scheduling: Strict priority (SP), Shaped Deficit Weighted Round-Robin (SDWRR)
•Ingress and egress policing
Management
•IPv4 or IPv6 management

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•CLI management utilities on Network OS v4.1.0
•Out-of-band management
•sFlow
•TRILL Operations, Administration, and Management (OAM)
Licensing
•The VCS Fabric license to enable Ethernet fabric functionality is enabled by default.
•Fibre Channel over Ethernet (FCoE) license
For the Brocade VDX 6740T-1G, you can only use this license after purchasing at least one 10G
Port Upgrade licence.
•10G Port Upgrade:
-For Brocade VDX 6740 and Brocade VDX 6740T, this adds 10 GbE ports in increments of
eight ports (8, 16, 24) per license.
-For Brocade VDX 6740T-1G, this upgrades existing 1 GbE ports to 1/10 GbE operation in
increments of 16 ports (16, 32, 48) per license.
-Removal of a port reservation provisioned by this license is blocked if the port is in a
configuration not allowed on 1 GbE port, such as Brocade Trunking or FCoE.
•40G Port Upgrade:
-For Brocade VDX 6740 and Brocade VDX 6740T, this is available in two-port increments
per license to provide four total ports.
-For Brocade VDX 6740T-1G, since the switch ships with two 40GbE ports, the license is
available in a single two-port increment to provide four total ports.
•10G and 40G Port Upgrade:
-Removal of a 10G or 40G Port Upgrade license requires port reservations for non-base
ports provisioned by the license to be released first.
For more information on licensing, refer to the Network OS Software Licensing Guide.
NOTE
To upgrade 1 Gbps port speed to 10 Gbps on the Brocade VDX 6740T-1G when installing the 10G
Port Upgrade License, refer to “Upgrading port speeds on the Brocade VDX 6740T-1G” on page 21.

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Views of the Brocade VDX 6740 switches 1
Views of the Brocade VDX 6740 switches
The port side of the Brocade VDX 6740 switch includes the system LEDs, management ports and
LEDs, USB port, and Gigabit Ethernet (GbE) ports and the corresponding port status LEDs.
Figure 1 shows the port side of the Brocade VDX 6740.
*Base ports on the VDX 6740T-1G operate at 1 Gbps and require Port Upgrade license to operate at 10 Gbps.
FIGURE 1 Port-side view of the Brocade VDX 6740
The port side of the Brocade VDX 6740T and Brocade VDX 6740T-1G switches includes the system
LEDs, management ports and LEDs, USB port, and Base-T Ethernet ports and the corresponding
port status LEDs.
Figure 2 shows the port side of the Brocade VDX 6740T and Brocade VDX 6740T-1G.
FIGURE 2 Port-side view of the Brocade VDX 6740Tand Brocade VDX 6740T-1G
1 USB port 6 1/10 GbE SFP+ ports 1 through 16 with status LEDs above*
2 System power LED 7 1/10 GbE SFP+ ports 17 through 32 with status LEDs
above*
3 System status LED 8 1/10 GbE SFP+ ports 33 through 48 with status LEDs
above*
4 Serial console management port (RJ-45) 9 40 GbE QSFP ports 49 through 52
5 Ethernet port (RJ-45) 10 Switch ID pull-out tab
1USBport 610GbEBaseTports1through16withstatusLEDsabove
2 Ethernet management port (RJ45) 7 10 GbE BaseT ports 17 through 32 with status LEDs above
3 Serial console port (mini-USB) 8 10 GbE BaseT ports 33 through 48 with status LEDs above
4 System status LED 9 40 GbE QSFP ports 49 through 52
5 System power LED 10 Switch ID pull-out tab

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Views of the Brocade VDX 6740 switches
1
Figure 3 shows the non-port side of the Brocade VDX 6740, which contains the combined power
supply and fan assemblies.
FIGURE 3 Non-port-side view of the Brocade VDX 6740
Figure 4 shows the non-port sides of the Brocade VDX 6740T and Brocade VDX 6740T-1G,which
house the separate power supplies and fans.
FIGURE 4 Non-port-side view of the Brocade VDX 6740T and Brocade VDX 6740T-1G
1 Power supply and fan assembly #2 5 Handle
2 Power cord receptacle 6 Airflow label
3 Power supply and fan status LED 7 Captive screw
4 On/off switch 8 Power supply and fan assembly #1
1Fan#1 10Plugretainer
2 Fan #2 11 Plug receptacle
3 Fan #3 12 Status LED
4 Fan #4 13 Ground lug
5Fan#5 14Captivescrew
6 Power supply #1 15 Status LED
7 Power supply #2 16 Airflow label
8 Captive screws 17 Handle
9Airflowlabel
237
15
48
6

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Chapter
2
Brocade VDX 6740 Installation
In this chapter
•Items included with the Brocade VDX 6740 switches . . . . . . . . . . . . . . . . . . 7
•Installation and safety considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
•Standalone installation for the Brocade VDX 6740 switches. . . . . . . . . . . . 10
•Rack installation options for the Brocade VDX 6740 switches . . . . . . . . . . 10
•Providing power to the switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
•Verifying operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Items included with the Brocade VDX 6740 switches
The following items are included with the standard shipment of a fully-configured Brocade VDX
6740. When you open the Brocade VDX 6740 packaging, verify that the items are included in the
package and that no damage has occurred during shipping.
•The Brocade VDX 6740 switch, Brocade VDX 6740T switch, or Brocade VDX 6740T-1G switch
•Transceivers and cables as ordered
•One accessory kit, containing the following items:
-Serial cable with an RJ-45 connector (Brocade VDX 6740) or a mini-USB connector
(Brocade VDX 6740T and Brocade VDX 6740T-1G)
-6 ft. power cords (2)
-Rubber feet, required for setting up the switch as a standalone unit
-2 GB USB drive
-China RoHS hazardous/toxic substance content chart
-EULA/Read-Me document
-Web pointer card for documentation
Installation and safety considerations
You can install the Brocade VDX 6740T and Brocade VDX 6740T-1G switches in the following ways:
•As a standalone unit on a flat surface.
•For the Brocade VDX 6740:
-In a four-post EIA rack using a port-side flush mount rack mount kit.
-In a Telco rack using either a port-side flush mount or mid-mount rack kit.

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•For the Brocade VDX 6740T and Brocade VDX 6740T-1G:
-In a four-post EIA rack using a port-side flush mount or a non-port-side flush mount
universal fixed-rail rack mount kit.
-In a Telco rack using a port-side flush mount or mid-mount universal rack kit.
NOTE
For the Brocade VDX 6740T and Brocade VDX 6740T-1G, be sure to keep the vents on the sides near
the front of the switch are unobstructed.
DANGER
The procedures in this manual are for qualified service personnel.
Electrical considerations
To install and operate the switch successfully, ensure compliance with the following requirements:
•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 are met. Refer to Table 12 for more information.
Environmental considerations
For successful installation and operation of the switch, ensure that the following environmental
requirements are met:
•Because the Brocade VDX 6740 switches can be ordered with fans that move air either front to
back (exhaust) or back to front (intake), be sure to orient your switch with the airflow pattern of
any other devices in the rack. All equipment in the rack should force air in the same direction to
avoid intake of exhaust air.
•For the Brocade VDX 6740 - A maximum flow of 43.7 cubic meters/hour (25.7 cubic
feet/minute) at the intake vents.
•For the Brocade VDX 6740T and Brocade VDX 6740T-1G - A maximum flow of 83.8 cubic
meters/hour (49.3 cubic feet/minute) at the intake vents.
•The ambient air temperature does not exceed 40C (104F) while the switch is operating.
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.
•The rack space required is one rack unit (1U) 44.45 mm (1.75 in.) high and 482.60 mm (19
in.) wide.