X7-4-Install-IG100 Installation Guide
Brocade
®
X7-4 Director Hardware Installation Guide
CAUTION
If fan assembly LED operation indicates a fault or no power, verify that fan is fully seated in the chassis and
that captive screws securing fan in the chassis are fully tightened. If screws are loose, pressure from fans may
unseat the fan from chassis connectors.
Interpreting POST and Boot Results
The device performs a power-on self-test (POST) by default each time the device is powered on, rebooted, or reset. The
device can be rebooted using the reboot command to reboot each CP individually) or the fastBoot command. The
fastBoot command reboots the switches without running POST. If the active CP blade is rebooted, it fails over to the
standby CP blade.
POST
The device automatically performs POST each time it is powered on or reset.
To verify that POST has completed without error, do the following tasks:
•
Verify that all LEDs return to a normal state after POST completes.
If one or more LEDs do not return to a normal state, and this is not due to the device being set to beacon, refer to the
relevant LED table to identify and correct the problem. For port blades, and CP and core switch blades, the slotShow
command can be used to check the status of the slots. For information about turning beaconing on or off, refer to the
Brocade Fabric OS Administration Guide.
•
Verify that the switch prompt displays when POST completes.
If it does not display, POST was not successfully completed. Contact the device supplier for support.
•
Review the system error log using the errShow or errDump commands.
Any errors detected during POST are written to the system log, which is accessible through the errShow command.
For information about error messages, refer to the Brocade Fabric OS Message Reference Manual Manual.
POST includes the following steps:
1. Preliminary POST diagnostics are run.
2. The operating system is initialized.
3. Hardware is initialized.
4. Diagnostic tests are run on several functions, including circuitry, port functionality, ability to send and receive frames,
all aspects of memory, parity, statistics counters, and serialization.
Boot
Gen 7 platforms implement Secure Boot. This feature enforces validation of the digital signature of the signed Boot Code
image in Boot Flash. It uses a pre-programmed public key HASH inside the CPU-internal-fuses to ensure authenticity and
integrity of the code prior to proceeding with the boot sequence.
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