Brocade Communications Systems A7533A - Brocade 4Gb SAN Switch Base Operating instructions

53-1001187-01

24 November 2008

Fabric OS

Troubleshooting and Diagnostics Guide

Supporting Fabric OS v6.2.0

Brocade, Fabric OS, File Lifecycle Manager, MyView, and StorageX are registered trademarks and the Brocade B-wing symbol,

DCX, and SAN Health are trademarks of Brocade Communications Systems, Inc., in the United States and/or in other countries.

All other brands, products, or service names are or may be trademarks or service marks of, and are used to identify, products or

services 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.

1745 Technology Drive

San Jose, CA 95110

Tel: 1-408-333-8000

Fax: 1-408-333-8101

Email: info@brocade.com

Asia-Pacific Headquarters

Brocade Communications Singapore Pte. Ltd.

30 Cecil Street

#19-01 Prudential Tower

Singapore 049712

Singapore

Tel: +65-6538-4700

Fax: +65-6538-0302

Email: [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: +41 22 799 5640

Fax: +41 22 799 5641

Email: [email protected]

Title Publication number Summary of changes Date

Fabric OS Troubleshooting and

Diagnostics Guide

53-0000853-01 First released edition. 12 March 2008

Fabric OS Troubleshooting and

Diagnostics Guide

53-1001187-01 Added support for Virtual Fabrics,

fcPing, pathInfo, and additional

troubleshooting tips.

24 November 2008

Fabric OS Troubleshooting and Diagnostics Guide iii

53-1001187-01

Contents

About This Document

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

How this document is organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Supported hardware and software . . . . . . . . . . . . . . . . . . . . . . . . . . . x

What’s new in this document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Document conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

Text formatting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

Command syntax conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

Notes, cautions, and warnings . . . . . . . . . . . . . . . . . . . . . . . . . . xii

Key terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii

Additional information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Brocade resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Other industry resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Getting technical help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Document feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv

Chapter 1 Introduction to Troubleshooting

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Troubleshooting overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Network time protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Most common problem areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Questions for common symptoms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Gathering information for your switch support provider. . . . . . . . . . . 5

Setting up your switch for FTP. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Capturing a supportSave. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Capturing a supportShow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Capturing output from a console . . . . . . . . . . . . . . . . . . . . . . . . . 6

Capturing command output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Building a case for your switch support provider . . . . . . . . . . . . . . . . 7

Basic information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Detailed problem information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . . . 9

Chapter 2 General Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Licensing issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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Time issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Switch message logs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Checking fan components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Checking the switch temperature. . . . . . . . . . . . . . . . . . . . . . . . 13

Checking the power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Checking the temperature, fan, and power supply . . . . . . . . . . 14

Switch boot issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Fibre Channel Router connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Generate and route an ECHO . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Route and statistical information . . . . . . . . . . . . . . . . . . . . . . . . 17

Performance issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Third party applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Chapter 3 Connections Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Port initialization and FCP auto discovery process . . . . . . . . . . . . . . 21

Link issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Connection problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Checking the logical connection . . . . . . . . . . . . . . . . . . . . . . . . . 23

Checking the name server (NS) . . . . . . . . . . . . . . . . . . . . . . . . . 24

Link failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Determining a successful negotiation . . . . . . . . . . . . . . . . . . . . 26

Checking for a loop initialization failure . . . . . . . . . . . . . . . . . . . 26

Checking for a point-to-point initialization failure . . . . . . . . . . . 27

Correcting a port that has come up in the wrong mode . . . . . . 27

Marginal links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Troubleshooting a marginal link . . . . . . . . . . . . . . . . . . . . . . . . . 28

Device login issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Pinpointing problems with device logins . . . . . . . . . . . . . . . . . . 31

Media-related issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Testing a port’s external transmit and receive path . . . . . . . . .34

Testing a switch’s internal components . . . . . . . . . . . . . . . . . . . 34

Testing components to and from the HBA . . . . . . . . . . . . . . . . . 35

Segmented fabrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Reconciling fabric parameters individually . . . . . . . . . . . . . . . . 36

Downloading a correct configuration . . . . . . . . . . . . . . . . . . . . .36

Reconciling a domain ID conflict . . . . . . . . . . . . . . . . . . . . . . . . 37

Chapter 4 Configuration Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Configupload and download issues. . . . . . . . . . . . . . . . . . . . . . . . . . 39

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . . 41

Brocade configuration form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

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Chapter 5 FirmwareDownload Errors

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Blade troubleshooting tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Firmware download issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Troubleshooting firmwareDownload . . . . . . . . . . . . . . . . . . . . . . . . .46

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . .46

USB error handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Considerations for downgrading firmware . . . . . . . . . . . . . . . . . . . . 47

Preinstallation messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Blade types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Firmware versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

IP settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Port settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Zoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Chapter 6 Security Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Password issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Password recovery options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Device authentication issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Protocol and certificate management issues . . . . . . . . . . . . . . . . . .55

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . .55

SNMP issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . .56

FIPS issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Chapter 7 Virtual Fabrics

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

General Virtual Fabric troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 59

Fabric identification issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Logical Fabric issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Base switch issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Logical switch issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Switch configuration blade compatibility. . . . . . . . . . . . . . . . . . . . . . 63

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . .64

Chapter 8 ISL Trunking Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Link issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

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Buffer credit issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Chapter 9 Zone Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Overview of corrective action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Verifying a fabric merge problem . . . . . . . . . . . . . . . . . . . . . . . .67

Verifying a TI zone problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Segmented fabrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Zone conflicts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Correcting a fabric merge problem quickly . . . . . . . . . . . . . . . . 70

Changing the default zone access . . . . . . . . . . . . . . . . . . . . . . . 71

Editing zone configuration members . . . . . . . . . . . . . . . . . . . . . 71

Reordering the zone member list . . . . . . . . . . . . . . . . . . . . . . . . 72

Checking for Fibre Channel connectivity problems . . . . . . . . . .72

Checking for zoning problems. . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Gathering additional information. . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Chapter 10 FCIP Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

FCIP tunnel issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

FCIP links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . .78

Port mirroring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Supported hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Port mirroring considerations . . . . . . . . . . . . . . . . . . . . . . . . . . .80

Port mirroring management . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

FTRACE concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Fibre Channel trace information. . . . . . . . . . . . . . . . . . . . . . . . . 82

Chapter 11 FICON Fabric Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

FICON issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Troubleshooting FICON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

General information to gather for all cases . . . . . . . . . . . . . . . .90

Identifying ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Single-switch topology checklist . . . . . . . . . . . . . . . . . . . . . . . . .92

Cascade mode topology checklist . . . . . . . . . . . . . . . . . . . . . . . 92

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . .92

Troubleshooting FICON CUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Troubleshooting FICON NPIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Chapter 12 iSCSI Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

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Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Zoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Chapter 13 Working With Diagnostic Features

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

About Fabric OS diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

Diagnostic information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Power-on self test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

Disabling POST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Enabling POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Switch status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Viewing the overall status of the switch . . . . . . . . . . . . . . . . . .102

Displaying switch information . . . . . . . . . . . . . . . . . . . . . . . . . .103

Displaying the uptime for a switch . . . . . . . . . . . . . . . . . . . . . .104

Chassis-level diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Spinfab and porttest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Port information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Viewing the status of a port . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Displaying the port statistics. . . . . . . . . . . . . . . . . . . . . . . . . . .106

Displaying a summary of port errors for a switch . . . . . . . . . .107

Equipment status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Displaying the status of the fans . . . . . . . . . . . . . . . . . . . . . . .108

Displaying the status of a power supply. . . . . . . . . . . . . . . . . .109

Displaying temperature status . . . . . . . . . . . . . . . . . . . . . . . . .109

System message log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Displaying the system message log, with no page breaks . . .110

Displaying the system message log one message at a time .110

Clearing the system message log . . . . . . . . . . . . . . . . . . . . . . .110

Port log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

Viewing the port log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

Syslogd configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Configuring the host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113

Configuring the switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113

Automatic trace dump transfers . . . . . . . . . . . . . . . . . . . . . . . . . . .114

Specifying a remote server . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Enabling the automatic transfer of trace dumps. . . . . . . . . . .115

Setting up periodic checking of the remote server . . . . . . . . .115

Saving comprehensive diagnostic files to the server . . . . . . .115

Diagnostic tests not supported by M-EOS 9.6.2 and FOS 6.0 . . . .116

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Appendix A Switch Type

Appendix B Hexadecimal

Index

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About This Document

In this chapter

•How this document is organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

•Supported hardware and software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

•What’s new in this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

•Document conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

•Additional information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

•Getting technical help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

•Document feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv

How this document is organized

The document contains the following chapters:

•Chapter 1, “Introduction to Troubleshooting,” gives a brief overview of troubleshooting the

Fabric OS, and provides procedures for gathering basic information from your switch and fabric

to aid in troubleshooting.

•Chapter 2, “General Issues,” provides information on licensing, hardware, and syslog issues.

•Chapter 3, “Connections Issues,” provides information and procedures on troubleshooting

various link issues.

•Chapter 4, “Configuration Issues,” provides troubleshooting information and procedures for

configuration file issues.

•Chapter 5, “FirmwareDownload Errors,” provides procedures for troubleshooting firmware

download issues.

•Chapter 6, “Security Issues,” provides procedures for user account and security issues.

•Chapter 7, “Virtual Fabrics”, provides procedures to troubleshooting Virtual Fabrics.

•Chapter 8, “ISL Trunking Issues,” provides procedures for resolving trunking issues.

•Chapter 9, “Zone Issues,” provides preparations and procedures for performing firmware

downloads, as well troubleshooting information.

•Chapter 10, “FCIP Issues,” provides information and procedures to troubleshoot FCIP tunnel

issues.

•Chapter 11, “FICON Fabric Issues,” provides information and procedures to troubleshooting

FICON related problems.

•Chapter 12, “iSCSI Issues,” provides information and procedures on iSCSI problems.

xFabric OS Troubleshooting and Diagnostics Guide

53-1001187-01

•Chapter 13, “Working With Diagnostic Features,” provides procedures for use of the Brocade

Adaptive Networking suite of tools, including Traffic Isolation, QoS Ingress Rate Limiting, and

QoS SID/DID Traffic Prioritization.

•The appendices provide special information to guide you in understanding switch output.

Supported hardware and software

In those instances in which procedures or parts of procedures documented here apply to some

switches but not to others, this guide identifies exactly which switches are supported and which are

not.

Although many different software and hardware configurations are tested and supported by

Brocade Communications Systems, Inc. for 6.2.0, documenting all possible configurations and

scenarios is beyond the scope of this document.

The following hardware platforms are supported by this release of Fabric OS:

•Brocade 200E switch

•Brocade 300 switch

•Brocade 4016 switch

•Brocade 4018 switch

•Brocade 4020 switch

•Brocade 4024 switch

•Brocade 4100 switch

•Brocade 4900 switch

•Brocade 5000 switch

•Brocade 5100 switch

•Brocade 5300 switch

•Brocade 5424 switch

•Brocade 7500 switch

•Brocade 7600 switch

•Brocade 48000 director

•Brocade DCX Backbone

•Brocade DCX-4S Backbone

What’s new in this document

•Information that was added:

-Support for new hardware platforms:

•Brocade DCX-4S enterprise-class platform (8 Gbps)

-Virtual Fabrics, including logical switch support

•Supported on the DCX, DCX-4S, 5300, and 5100

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