Brocade Communications Systems A7533A - Brocade 4Gb SAN Switch Base Istruzioni operative

53-1000853-01

12 March 2008

Fabric OS

Troubleshooting and Diagnostics Guide

Supporting Fabric OS v6.1.0

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 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.

9 Raffles Place

#59-02 Republic Plaza 1

Singapore 048619

Tel: +65-6538-4700

Fax: +65-6538-0302

Email: apac-info@brocade.com

European and Latin American Headquarters

Brocade Communications Switzerland Sàrl

Centre Swissair

Tour A - 2ème étage

29, Route de l'Aéroport

Case Postale 105

CH-1215 Genève 15

Switzerland

Tel: +41 22 799 56 40

Fax: +41 22 799 56 41

Email: emea[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 iii

53-1000853-01

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

Notes, cautions, and warnings . . . . . . . . . . . . . . . . . . . . . . . . . . .xi

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

Additional information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii

Brocade resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii

Other industry resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii

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

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

Chapter 1 Introduction to Troubleshooting

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

About troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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

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

Detailed problem information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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

Chapter 2 General Issues

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

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

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Switch Message Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Checking fan components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

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

Checking the power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Checking the temperature, fan, and power supply . . . . . . . . . .13

Fibre Channel Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Checking for Fibre Channel connectivity problems . . . . . . . . . .14

Third party applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Chapter 3 Connections Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Port initialization and FCP auto discovery process . . . . . . . . . . . . . . 17

Link issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Connection problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Checking the logical connection . . . . . . . . . . . . . . . . . . . . . . . . . 19

Checking the name server (NS) . . . . . . . . . . . . . . . . . . . . . . . . .20

Link failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Determining a successful negotiation . . . . . . . . . . . . . . . . . . . . 22

Checking for a loop initialization failure . . . . . . . . . . . . . . . . . . .22

Checking for a point-to-point initialization failure . . . . . . . . . . .23

Correcting a port that has come up in the wrong mode . . . . . .23

Marginal links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Troubleshooting a marginal link . . . . . . . . . . . . . . . . . . . . . . . . . 24

Device login issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Pinpointing problems with device logins . . . . . . . . . . . . . . . . . .27

Media-related issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Testing a port’s external transmit and receive path . . . . . . . . . 30

Testing a switch’s internal components. . . . . . . . . . . . . . . . . . . 30

Testing components to and from the HBA . . . . . . . . . . . . . . . . .30

Segmented fabrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Reconciling fabric parameters individually . . . . . . . . . . . . . . . .31

Downloading a correct configuration . . . . . . . . . . . . . . . . . . . . . 32

Reconciling a domain ID conflict . . . . . . . . . . . . . . . . . . . . . . . . 32

Chapter 4 Configuration Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Configupload and download issues. . . . . . . . . . . . . . . . . . . . . . . . . .33

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . . 35

Brocade configuration form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Chapter 5 FirmwareDownload Errors

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Blade troubleshooting tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Firmware download issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

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Troubleshooting firmwareDownload . . . . . . . . . . . . . . . . . . . . . . . . . 41

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

Brocade DCX error handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

USB error handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Considerations for downgrading firmware . . . . . . . . . . . . . . . . . . . .44

Preinstallation messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Blade types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Firmware versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

IP settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

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

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

Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Zoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Chapter 6 Security Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Password issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Password recovery options . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Protocol and certificate management issues . . . . . . . . . . . . . . . . . .58

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . . 59

SNMP issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . . 60

FIPS issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Chapter 7 ISL Trunking Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Link issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Buffer credit issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Chapter 8 Zone Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Overview of corrective action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Verifying a fabric merge problem . . . . . . . . . . . . . . . . . . . . . . . . 63

Segmented fabrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Zone conflicts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

Correcting a fabric merge problem quickly . . . . . . . . . . . . . . . . 65

Editing zone configuration members . . . . . . . . . . . . . . . . . . . . . 66

Reordering the zone member list . . . . . . . . . . . . . . . . . . . . . . . .66

Checking for Fibre Channel connectivity problems . . . . . . . . . .66

Checking for zoning problems. . . . . . . . . . . . . . . . . . . . . . . . . . .68

Gathering additional information. . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

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Chapter 9 FCIP Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

FCIP tunnel issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

FCIP links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . . 72

Port mirroring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Supported hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

Port mirroring considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Port mirroring management . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

FTRACE concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Tracing Fibre Channel information . . . . . . . . . . . . . . . . . . . . . . . 76

Chapter 10 FICON Fabric Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

FICON issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Troubleshooting FICON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

General information to gather for all cases . . . . . . . . . . . . . . . . 80

Identifying ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

Single-switch topology checklist . . . . . . . . . . . . . . . . . . . . . . . . . 82

Cascade mode topology checklist . . . . . . . . . . . . . . . . . . . . . . . 82

Gathering additional information . . . . . . . . . . . . . . . . . . . . . . . . 82

Troubleshooting FICON CUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

Troubleshooting FICON NPIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

Chapter 11 iSCSI Issues

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

Zoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Chapter 12 Working With Diagnostic Features

In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

About Fabric OS diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Diagnostic information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Power-on self test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Switch status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Viewing the overall status of the switch. . . . . . . . . . . . . . . . . . .94

Displaying switch information . . . . . . . . . . . . . . . . . . . . . . . . . . .95

Displaying the uptime for a switch . . . . . . . . . . . . . . . . . . . . . . .95

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Port information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Viewing the status of a port . . . . . . . . . . . . . . . . . . . . . . . . . . . .96

Displaying the port statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . .97

Displaying a summary of port errors for a switch . . . . . . . . . . .98

Equipment status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Displaying the status of the fans . . . . . . . . . . . . . . . . . . . . . . . .99

Displaying the status of a power supply. . . . . . . . . . . . . . . . . . .99

Displaying temperature status . . . . . . . . . . . . . . . . . . . . . . . . .100

System message log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

Displaying the system message log, with no page breaks . . .100

Displaying the system message log one message at a time .100

Clearing the system message log . . . . . . . . . . . . . . . . . . . . . . .101

Port log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

Viewing the port log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

Syslogd configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Configuring the host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Configuring the switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Automatic trace dump transfers . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Specifying a remote server . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Enabling the automatic transfer of trace dumps. . . . . . . . . . .105

Setting up periodic checking of the remote server . . . . . . . . .105

Saving comprehensive diagnostic files to the server . . . . . . .105

Diagnostic tests not supported by M-EOS 9.6.2 and FOS 6.0. . . .106

Appendix A Switch Type

Appendix B Hexidecimal

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii

•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 Fabric OS, explains the

Fabric OS CLI Help feature, and provides typical connection and configuration procedures.

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

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

authentication and user accounts for the switch management channel.

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

policies for FC port and switch binding and managing the fabric-wide consistency policy.

•Chapter 5, “FirmwareDownload Errors,” provides procedures for maintaining and backing up

your switch configurations.

•Chapter 6, “Security Issues,” provides procedures for basic password and user account

management.

•Chapter 7, “ISL Trunking Issues,” describes the concepts and provides procedures for using

administrative domains.

•Chapter 8, “Zone Issues,” provides preparations and procedures for performing firmware

downloads, as well troubleshooting information.

•Chapter 9, “FCIP Issues,” provides information and procedures specific to Brocade 48000 and

Brocade DCX models. Because these models have CP blades and port blades, they require

procedures that are not relevant to the Brocade fixed-port models.

•Chapter 10, “FICON Fabric Issues,” provides information and procedures specific to Brocade

48000 and Brocade DCX models. Because these models have CP blades and port blades, they

require procedures that are not relevant to the Brocade fixed-port models.

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•Chapter 11, “iSCSI Issues,” provides information and procedures specific to Brocade 48000

and Brocade DCX models. Because these models have CP blades that support the iSCSI

feature.

•Chapter 12, “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 6.1.0, 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 7500 switch

•Brocade 7600 switch

•Brocade 48000 director

•Brocade DCX Backbone

What’s new in this document

This manual is a compilation of all the information originally distributed through out the Fabric OS

Administrator’s Guide chapters.

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