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Dell Brocade G620 Brocade 8.0.1 Fabric OS Troubleshooting and Diagnostics Guid - Page 18

Changing the supportSave timeout value, Capturing output from a console

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Introduction NOTE The -c option works only if you used the supportftp -s command to set up the FTP server. When invoked without operands, this command goes into interactive mode. The following operands are optional: -n -Does not prompt for confirmation. This operand is optional; if omitted, you are prompted for confirmation. -c -Uses the FTP parameters saved by the supportFtp command. This operand is optional; if omitted, specify the FTP parameters through command line options or interactively. To display the current FTP parameters, run supportFtp (on a dual-CP system, run supportFtp on the active CP). ∙ On platforms that support USB devices, you can use your Brocade USB device to save the support files. To use your USB device, use the following command: supportsave [-U -d remote_dir] -U -Saves support data to an attached USB device. When using this option, a target directory must be specified with the d option. -d remote_dir -Specifies the remote directory to which the file is to be transferred. When saving to a USB device, the remote directory is created in the /support directory of the USB device by default. Changing the supportSave timeout value While running the supportSave command, you may encounter a timeout. A timeout occurs if the system is in a busy state due to the CPU or I/O bound from a lot of port traffic or file access. A timeout can also occur on very large machine configurations or when the machine is under heavy usage. If this occurs, an SS-1004 message is generated to both the console and the RASlog to report the error. You must rerun the supportSave command with the -t option. Example of SS-1004 message: SS-1004: "One or more modules timed out during supportsave. Please retry supportsave with -t option to collect all logs." Use this feature when you observe that supportSave has timed out. 1. Connect to the switch and log in using an account with admin permissions. 2. Enter the supportSave command with the -t operand, and specify a value from 1 through 5. The following example increases the supportSave modules timeout to two times of the original timeout setting. switch:admin> supportSave -t 2 Capturing output from a console Some information, such as boot information is only outputted directly to the console. To capture this information, you must connect directly to the switch through its management interface, either a serial cable or an RJ-45 connector that is specifically used for Ethernet connection to the management network. 1. Connect directly to the switch using hyperterminal. 2. Log in to the switch using an account with admin permissions. 3. Set the utility to capture output from the screen. Some utilities require this step to be performed prior to opening up a session. Check with your utility vendor for instructions. Brocade Fabric OS Troubleshooting and Diagnostics Guide 18 53-1004126-01

Section	Page
Brocade Fabric OS Troubleshooting and Diagnostics Guide	1
Preface	7
Document conventions	7
Text formatting conventions	7
Command syntax conventions	7
Notes, cautions, and warnings	8
Brocade resources	8
Contacting Brocade Technical Support	8
Brocade customers	8
Brocade OEM customers	9
Document feedback	9
About This Document	11
Supported hardware and software	11
Brocade Gen 5 (16-Gbps) fixed-port switches	11
Brocade Gen 5 (16-Gbps) DCX 8510 Directors	11
Brocade Gen 6 fixed-port switches	11
Brocade Gen 6 Directors	12
What's new in this document	12
Introduction	13
Troubleshooting overview	13
Network Time Protocol	13
Most common problem areas	13
Questions for common symptoms	14
Gathering information for your switch support provider	17
Setting up your switch for FTP	17
Using the supportSave command	17
Changing the supportSave timeout value	18
Capturing output from a console	18
Capturing command output	19
Building a case for your switch support provider	19
Basic information	19
Detailed problem information	20
Gathering additional information	21
General Troubleshooting	23
Licenses	23
Time	23
Frame Viewer	23
Switch message logs	24
Switch boot	25
Rolling Reboot Detection	25
Reboot classification	25
Restrictions	26
Collecting limited supportSave output on the Rolling Reboot Detection	27
FC-FC routing connectivity	27
Generating and routing an ECHO	27
Superping	29
Restrictions	31
Routing and statistical information	32
Performance issues	33
Connectivity	35
Port initialization and FCP auto-discovery process	35
Link issues	36
Connection problems	37
Checking the physical connection	37
Checking the logical connection	37
Checking the Name Server	38
Link failures	39
Determining a successful speed negotiation	39
Checking for a loop initialization failure	40
Checking for a point-to-point initialization failure	40
Correcting a port that has come up in the wrong mode	41
Marginal links	41
Troubleshooting a marginal link	42
Device login issues on Fabric switch	43
Pinpointing problems with device logins	44
Device login issues on Access Gateway	45
Media-related issues	46
Testing the external transmit and receive path of a port	46
Testing the internal components of a switch	46
Testing components to and from the HBA	47
Segmented fabrics	47
Reconciling fabric parameters individually	48
Downloading a correct configuration	48
Reconciling a domain ID conflict	48
Reconciling incompatible software features	50
Configuration	51
Configuration upload and download issues	51
Gathering additional information	53
Messages captured in the logs	54
Brocade configuration form	54
Firmware Download Errors	55
Blade troubleshooting tips	55
Firmware download issues	56
Troubleshooting with the firmwareDownload command	58
Gathering additional information	59
USB error handling	59
Considerations for downgrading firmware	59
Preinstallation messages	60
Blade types	61
Firmware versions	61
Platform	62
Routing	62
Security	63
Passwords	63
Password recovery options	63
Device authentication	64
Protocol and certificate management	64
Gathering additional information	65
SNMP	65
Gathering additional information	66
FIPS	66
Virtual Fabrics	67
General Virtual Fabrics troubleshooting	67
Fabric identification issues	68
Logical Fabric issues	68
Base switch issues	68
Logical switch issues	69
Switch configuration blade compatibility	71
Gathering additional information	71
ISL Trunking	73
Link issues	73
Buffer credit issues	74
Getting out of buffer-limited mode	74
Zoning	75
Overview of corrective action	75
Verifying a fabric merge problem	75
Verifying a TI zone problem	75
Segmented fabrics	76
Zone conflicts	77
Resolving zoning conflicts	78
Correcting a fabric merge problem quickly	78
Changing the default zone access	79
Editing zone configuration members	79
Reordering the zone member list	79
Checking for Fibre Channel connectivity problems	80
Checking for zoning problems	81
Gathering additional information	81
Diagnostic Features	83
Fabric OS diagnostics	83
Diagnostic information	83
Power-on self-test	84
Disabling POST	85
Enabling POST	85
Switch status	85
Viewing the overall status of the switch	86
Displaying switch information	86
Displaying the uptime for a switch	87
Using the spinFab and portTest commands	88
Debugging spinFab errors	88
Link errors	89
Tx/Rx errors	89
Clearing the error counters	90
Enabling a port	90
Disabling a port	90
Port information	90
Viewing the status of a port	90
Displaying the port statistics	91
Displaying a summary of port errors for a switch	92
Equipment status	93
Checking the temperature, fan, and power supply	93
Checking the status of the fans	94
Checking the status of a power supply	94
Checking temperature status	94
System message log	95
Displaying the system message log with no page breaks	95
Displaying the system message log one message at a time	95
Clearing the system message log	96
Port log	96
Viewing the port log	96
Syslogd configuration	97
Configuring the host	97
Configuring the switch	98
Specifying syslogd hosts	98
Setting the facility level	98
Removing a syslogd host from the list	99
Automatic trace dump transfers	99
Specifying a remote server	99
Enabling the automatic transfer of trace dumps	99
Setting up periodic checking of the remote server	99
Saving comprehensive diagnostic files to the server	100
Multiple trace dump files support	100
Auto FTP support	100
Trace dump support	101
Switch Type and Blade ID	103
Hexadecimal Conversion	105
Hexadecimal overview	105
Example conversion of the hexadecimal triplet Ox616000	105

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NOTE

The

-c

option works only if you used the

supportftp -s

command to set up the FTP server.

When invoked without operands, this command goes into interactive mode. The following operands are optional:

-n

—Does not prompt for confirmation. This operand is optional; if omitted, you are prompted for confirmation.

-c

—Uses the FTP parameters saved by the

supportFtp

command. This operand is optional; if omitted, specify the FTP

parameters through command line options or interactively. To display the current FTP parameters, run

supportFtp

(on a

dual-CP system, run

supportFtp

on the active CP).

∙

On platforms that support USB devices, you can use your Brocade USB device to save the support files. To use your USB

device, use the following command:

supportsave [-U -d remote_dir]

-U

—Saves support data to an attached USB device. When using this option, a target directory must be specified with the

option.

-d

remote_dir

—Specifies the remote directory to which the file is to be transferred. When saving to a USB device, the

remote directory is created in the /support directory of the USB device by default.

Changing the supportSave timeout value

While running the

supportSave

command, you may encounter a timeout. A timeout occurs if the system is in a busy state due to the

CPU or I/O bound from a lot of port traffic or file access. A timeout can also occur on very large machine configurations or when the

machine is under heavy usage. If this occurs, an

SS-1004

message is generated to both the console and the RASlog to report the error.

You must rerun the

supportSave

command with the

-t

option.

Example of

SS-1004

message:

SS-1004: "One or more modules timed out during supportsave. Please retry supportsave with -t option

to collect all logs."

Use this feature when you observe that

supportSave

has timed out.

Connect to the switch and log in using an account with admin permissions.

Enter the

supportSave

command with the

-t

operand, and specify a value from 1 through 5.

The following example increases the

supportSave

modules timeout to two times of the original timeout setting.

switch:admin> supportSave -t 2

Capturing output from a console

Some information, such as boot information is only outputted directly to the console. To capture this information, you must connect

directly to the switch through its management interface, either a serial cable or an RJ-45 connector that is specifically used for Ethernet

connection to the management network.

Connect directly to the switch using hyperterminal.

Set the utility to capture output from the screen.

Some utilities require this step to be performed prior to opening up a session. Check with your utility vendor for instructions.

Introduction

Brocade Fabric OS Troubleshooting and Diagnostics Guide

53-1004126-01