HP AM866A Brocade Troubleshooting and Diagnostics Guide v6.1.0 (53-1000853-01, - Page 106

Diagnostic information, Power-on self test

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12 Diagnostic information Diagnostic information On the switch you can enter the supportShow command to dump important diagnostic and status information to the session screen, where you can review it or capture its data. If you are using a Telnet client, you may have to set the client up to capture the data prior to opening the session Most information can be captured using the supportShow or supportSave commands and FTP'd off the switch, but when you are collecting information from commands, this information has to be captured using a Telnet client. To save a set of files that customer support technicians can use to further diagnose the switch condition, enter the supportSave command. The command prompts for an FTP server, packages the following files, and sends them to the specified server: • The output of the supportShow command. • The contents of any trace dump files on the switch. • System message logs (for directors, supportSave saves the system message logs from both of the CP blades). See also to "Automatic trace dump transfers" on page 104. Power-on self test By default, when you power on the system, the boot loader automatically performs power-on self tests and loads a Fabric OS kernel image. The POST tests provide a quick indication of hardware readiness when hardware is powered up. These tests do not require user input to function. They typically operate within several minutes, and support minimal validation because of the restriction on test duration. Their purpose is to give a basic health check before a new switch joins a fabric. These tests are divided into two groups: POST1 and POST2. POST1 validates the hardware interconnect of the device, and POST2 validates the ability of the device to pass data frames between the ports. The specific set of diagnostic and test commands run during POST depends on the switch model. The factory default configuration is set to run POST2, but you can configure your switch to bypass POST2, which runs after the kernel image has started but before general system services such as login are enabled. Although each test performed during POST2 is configurable, you should only modify a POST2 test if directed by your switch provider's customer service representative. You can use the diagDisablePost command to disable both POST1 and POST2, and you can reenable it using the diagEnablePost command. See the Fabric OS Command Reference for additional information about these commands. The following example shows a typical boot sequence, including POST messages: The system is coming up, please wait... Read board ID of 0x80 from addr 0x23 Read extended model ID of 0x16 from addr 0x22 Matched board/model ID to platform index 4 PCI Bus scan at bus 0 ::: 92 Fabric OS Troubleshooting and Diagnostics Guide 53-1000853-01

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92
Fabric OS Troubleshooting and Diagnostics Guide
53-1000853-01
Diagnostic information
12
Diagnostic information
On the switch you can enter the
supportShow
command to dump important diagnostic and status
information to the session screen, where you can review it or capture its data. If you are using a
Telnet client, you may have to set the client up to capture the data prior to opening the session
Most information can be captured using the supportShow or supportSave commands and FTP’d off
the switch, but when you are collecting information from commands, this information has to be
captured using a Telnet client.
To save a set of files that customer support technicians can use to further diagnose the switch
condition, enter the
supportSave
command. The command prompts for an FTP server, packages
the following files, and sends them to the specified server:
•
The output of the
supportShow
command.
•
The contents of any trace dump files on the switch.
•
System message logs (for directors,
supportSave
saves the system message logs from both of
the CP blades).
See also to
“Automatic trace dump transfers”
on page 104.
Power-on self test
By default, when you power on the system, the boot loader automatically performs power-on self
tests and loads a Fabric OS kernel image.
The POST tests provide a quick indication of hardware readiness when hardware is powered up.
These tests do not require user input to function. They typically operate within several minutes, and
support minimal validation because of the restriction on test duration. Their purpose is to give a
basic health check before a new switch joins a fabric.
These tests are divided into two groups: POST1 and POST2. POST1 validates the hardware
interconnect of the device, and POST2 validates the ability of the device to pass data frames
between the ports. The specific set of diagnostic and test commands run during POST depends on
the switch model.
The factory default configuration is set to run POST2, but you can configure your switch to bypass
POST2, which runs after the kernel image has started but before general system services such as
login are enabled.
Although each test performed during POST2 is configurable, you should only modify a POST2 test if
directed by your switch provider’s customer service representative.
You can use the
diagDisablePost
command to disable both POST1 and POST2, and you can
reenable it using the
diagEnablePost
command. See the
Fabric OS Command Reference
for
additional information about these commands.
The following example shows a typical boot sequence, including POST messages:
The system is coming up, please wait...
Read board ID of 0x80 from addr 0x23
Read extended model ID of 0x16 from addr 0x22
Matched board/model ID to platform index 4
PCI Bus scan at bus 0
:::