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Considerations for downgrading firmware, Preinstallation messages

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5 Considerations for downgrading firmware Considerations for downgrading firmware The pre-installation check of the firmwareDownload command detects all of the blocking conditions that can prevent a successful downgrade, and warns you about all these conditions. The error messages displayed by the firmwareDownload command states the blocking conditions and the corresponding commands to correct them. You must address all of these blocking conditions before proceeding. Refer to the Fabric OS Administrator's Guide for more information regarding individual features and commands. To avoid failure of a firmware downgrade, verify the firmware you are downgrading to supports all the blades in the chassis, and that the switch, blades, or chassis supports all the features you are currently using. If not, you must disable or remove those features that are not supported. Preinstallation messages The system messages in this section are displayed if an exception is encountered during firmware download. The following examples show feature-related messages that you may see if you were upgrading from v7.0.0 to v7.1.0: NOTE The system messages in this section are for illustration purposes only. They do not represent the entire range of possible error messages appropriate to a wide variety of installation scenarios. Cannot upgrade directly to 7.1. Please upgrade to 6.4 first and then upgrade to 7.1. Upgrade to 7.1 is not allowed because FC Fastwrite is not supported on this version. Please use "fastwritecfg" to deconfigure FC Fastwrite for all slots and try again. Upgrade to 7.1 is not allowed due to the presence of ioddelay configuration. Please reset the feature with "ioddelayreset" before upgrading to v7.1. Upgrade to 7.1 is not allowed since base switch has R_RDY enabled ports. Please disable the R_RDY enabled ports in base switch using portcfgislmode command. Firmware upgrade to Fabric OS 7.1.0 or higher is not allowed when there are more than 4 chassis connected through Inter-Chassis Links (ICLs) and the Enterprise ICL (EICL) license is not installed in the system. Note that even with an EICL license installed, only 9 chassis are allowed to connect through ICLs. You can either install an EICL license, or you must disable the additional ICL links before performing a firmware upgrade. This example shows hardware-related messages for a downgrade: ecp:admin> firmwaredownload Type of Firmware (FOS, SAS, or any application) [FOS]: Server Name or IP Address: 10.1.2.3 User Name: userfoo File Name: /home/userfoo/v6.3.0 Network Protocol (1-auto-select, 2-FTP, 3-SCP) [1]: Password: Checking System Settings... Version compatibility check passed. 56 Fabric OS Troubleshooting and Diagnostics Guide 53-1002751-01

Section	Page
About This Document	11
How this document is organized	11
Supported hardware and software	12
What’s new in this document	12
Document conventions	13
Text formatting	13
Command syntax conventions	13
Command examples	13
Notes, cautions, and warnings	14
Key terms	14
Additional information	14
Brocade resources	14
Other industry resources	15
Getting technical help	15
Document feedback	16
Introduction	17
Troubleshooting overview	17
Network time protocol	17
Most common problem areas	18
Questions for common symptoms	18
Gathering information for your switch support provider	21
Setting up your switch for FTP	21
Capturing a supportSave	21
Capturing output from a console	22
Capturing command output	23
Building a case for your switch support provider	23
Basic information	23
Detailed problem information	24
Gathering additional information	25
General	27
Licenses	27
Time	27
Frame Viewer	28
Switch message logs	28
Switch boot	29
Rolling Reboot Detection	30
FC-FC routing connectivity	32
Generating and routing an ECHO	32
Superping	33
Route and statistical information	36
Performance issues	37
Connectivity	39
Port initialization and FCP auto-discovery process	39
Link issues	41
Connection problems	41
Checking the physical connection	41
Checking the logical connection	42
Checking the Name Server	42
Link failures	44
Determining a successful speed negotiation	44
Checking for a loop initialization failure	45
Checking for a point-to-point initialization failure	45
Correcting a port that has come up in the wrong mode	46
Marginal links	46
Troubleshooting a marginal link	47
Device login issues	49
Pinpointing problems with device logins	49
Media-related issues	51
Testing a port’s external transmit and receive path	52
Testing a switch’s internal components	52
Testing components to and from the HBA	52
Segmented fabrics	52
Reconciling fabric parameters individually	53
Downloading a correct configuration	54
Reconciling a domain ID conflict	54
Reconciling incompatible software features	55
Port mirroring	56
In-Order Delivery	56
Port mirroring considerations	56
Supported platforms	57
Maximum mirror connections	58
Configuring a port to be a mirror port	58
Adding a port mirror connection	58
Deleting a port mirror connection	59
Displaying port mirror connections	59
Configuration	61
Configuration upload and download issues	61
Gathering additional information	64
Brocade configuration form	64
Firmware Download Errors	67
Blade troubleshooting tips	67
Firmware download issues	68
Troubleshooting with the firmwareDownload command	70
Gathering additional information	71
USB error handling	71
Considerations for downgrading firmware	72
Preinstallation messages	72
Blade types	74
Firmware versions	74
Platform	75
Routing	75
Security	77
Passwords	77
Password recovery options	78
Device authentication	78
Protocol and certificate management	79
Gathering additional information	79
SNMP	80
Gathering additional information	80
FIPS	80
Virtual Fabrics	81
General Virtual Fabrics troubleshooting	81
Fabric identification issues	82
Logical Fabric issues	82
Base switch issues	83
Logical switch issues	84
Switch configuration blade compatibility	85
Gathering additional information	86
ISL Trunking	87
Link issues	87
Buffer credit issues	88
Getting out of buffer-limited mode	88
Zoning	89
Overview of corrective action	89
Verifying a fabric merge problem	89
Verifying a TI zone problem	89
Segmented fabrics	90
Zone conflicts	91
Correcting a fabric merge problem quickly	92
Changing the default zone access	93
Editing zone configuration members	93
Reordering the zone member list	93
Checking for Fibre Channel connectivity problems	94
Checking for zoning problems	95
Gathering additional information	96
Diagnostic Features	97
About Fabric OS diagnostics	97
Diagnostic information	97
Power-on self test	98
Disabling POST	100
Enabling POST	100
Switch status	100
Viewing the overall status of the switch	100
Displaying switch information	101
Displaying the uptime for a switch	102
Using the SpinFab and portTest commands	103
Debugging spinFab errors	104
Clearing the error counters	105
Enabling a port	105
Disabling a port	106
Diagnostic Port (D_Port)	106
Understanding D_Port	107
Supported topologies	109
Using D_Port without HBAs	111
Using D_Port with HBAs	113
Controlling testing	116
Example test scenarios and output	116
Port information	121
Viewing the status of a port	121
Displaying the port statistics	122
Displaying a summary of port errors for a switch	123
Equipment status	124
Checking the temperature, fan, and power supply	124
Checking the status of the fans	124
Checking the status of a power supply	125
Checking temperature status	125
System message log	126
Displaying the system message log, with no page breaks	126
Displaying the system message log one message at a time	127
Clearing the system message log	127
Port log	127
Viewing the port log	127
Syslogd configuration	129
Configuring the host	129
Configuring the switch	130
Automatic trace dump transfers	131
Specifying a remote server	131
Enabling the automatic transfer of trace dumps	131
Setting up periodic checking of the remote server	131
Saving comprehensive diagnostic files to the server	132
Switch Type and Blade ID	133
Hexadecimal Conversion	137
Example conversion of the hexadecimal triplet Ox616000	137
Decimal-to-hexadecimal conversion table	138

Match case Limit results 1 per page

Fabric OS Troubleshooting and Diagnostics Guide

53-1002751-01

Considerations for downgrading firmware

The pre-installation check of the

firmwareDownload

command detects all of the blocking

conditions that can prevent a successful downgrade, and warns you about all these conditions. The

error messages displayed by the

firmwareDownload

command states the blocking conditions and

the corresponding commands to correct them. You must address all of these blocking conditions

before proceeding. Refer to the

Fabric OS Administrator’s Guide

for more information regarding

individual features and commands.

To avoid failure of a firmware downgrade, verify the firmware you are downgrading to supports all

the blades in the chassis, and that the switch, blades, or chassis supports all the features you are

currently using. If not, you must disable or remove those features that are not supported.

Preinstallation messages

The system messages in this section are displayed if an exception is encountered during firmware

download. The following examples show feature-related messages that you may see if you were

upgrading from v7.0.0 to v7.1.0:

NOTE

The system messages in this section are for illustration purposes only. They do not represent the

entire range of possible error messages appropriate to a wide variety of installation scenarios.

Cannot upgrade directly to 7.1. Please upgrade to 6.4 first and then upgrade

to 7.1.

Upgrade to 7.1 is not allowed because FC Fastwrite is not supported on this

version. Please use "fastwritecfg" to deconfigure FC Fastwrite for all slots

and try again.

Upgrade to 7.1 is not allowed due to the presence of ioddelay configuration.

Please reset the feature with "ioddelayreset" before upgrading to v7.1.

Upgrade to 7.1 is not allowed since base switch has R_RDY enabled ports.

Please disable the R_RDY enabled ports in base switch using portcfgislmode

command.

Firmware upgrade to Fabric OS 7.1.0 or higher is not allowed when there are

more than 4 chassis connected through Inter-Chassis Links (ICLs) and the

Enterprise ICL (EICL) license is not installed in the system. Note that even

with an EICL license installed, only 9 chassis are allowed to connect through

ICLs. You can either install an EICL license, or you must disable the

additional ICL links before performing a firmware upgrade.

This example shows hardware-related messages for a downgrade:

ecp:admin>

firmwaredownload

Type of Firmware (FOS, SAS, or any application) [FOS]:

Server Name or IP Address: 10.1.2.3

User Name: userfoo

File Name: /home/userfoo/v6.3.0

Network Protocol (1-auto-select, 2-FTP, 3-SCP) [1]:

Password: <hidden>

Checking System Settings...

Version compatibility check passed.