Black Box LBG1000A, Manual, Page: 26 / 142

Power-on Self test (POST)
The LBG1000A Switch performs its Power-On Self Test (POST) when the power is switched on. During the POST, the
switch CPU will:
•
perform a series of diagnostic procedures to make sure the basic system is functioning integrity
•
decompress the main switching software runtime image from the flash ROM into DRAM area
•
begin executing the main switching software
A command line prompts when you press the Esc key on a terminal connected to the switch serial port during the POST
process. Then you can execute the following options:
DOWNLOAD RUNTIME SOFTWARE FROM SERIAL PORT
This will download the runtime system image to the switch via the serial port. Before selecting this option, make sure:
- A host system is running a terminal emulation program that supports the Kermit file transfer protocol.
- The host system’s hard drive has the required binary file that will be downloaded to the switch.
CONFIGURE THE SYSTEM
This option lets you modify any configurable parameter in the switch’s flash ROM before the switch system boots.
RUN MANUFACTURING DIAGNOSTICS
This option is to download the manufacturer’s diagnostics. Refer to Download Runtime Software for download requirements.
When the file transfer is completed, the target system jumps to the entry point of the diagnostic program and starts executing the
diagnostic code. The Main Menu of the diagnostic program appears, where you can initiate tests or obtain system information. Note
that user intervention is not required when a test runs, unless an error occurs. If an error occurs during testing, you are given the
choice of continuing the diagnostics or skip the error.