Chapter 3. Start-Up Sequence; Alliedware Plus™ Start-Up; Diagnostic Menu - Allied Telesis SwitchBlade x908 Series Software Reference Manual

Start-up Sequence
AlliedWare Plus™ Start-up
Every switch has a start-up process. A specified version of product software must be loaded
and executed. The bootloader is the executable code responsible for setting up the system and
loading the release software.
The bootloader is the software that runs the unit when it first powers up, performing basic
initialization and executing the product software release. As part of the start-up process of the
switch, the bootloader allows you various options before running the product release software.
Previous versions of AlliedWare provide the option to boot to EPROM if a software release
cannot be loaded, is unlicensed, or if selected by the user. The EPROM provides enough basic
functionality to get a working software release loaded and operational on the switch. In
AlliedWare Plus™ this task is handled by the bootloader.
As AlliedWare Plus™ begins its start-up process; there are two options that allow you to
access either the diagnostic menu, or the bootloader menu. The following prompt is displayed
when these options are temporarily available:
Bootloader 1.0.9 loaded
Press <Ctrl+B> for the Boot Menu
You can now enter one of the following two options to determine how the start-up process
proceeds:
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Diagnostic menu

Enter Ctrl+D during start-up to access the bootloader diagnostic menu, and provide options
for performing various hardware tests. This can be useful as a tool for confirming a suspected
hardware problem at the direction of network engineering personnel. When you enter Ctrl+D,
the stage 1 diagnostics menu is displayed:
Bootup Stage 1 Diagnostics Menu:
0. Restart
1. Full RAM test
2. Quick RAM test
3. Battery backed RAM (NVS) test
4. Bootloader ROM checksum test
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7. Bootup stage 2 diagnostics menu
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8. Quit to U-Boot shell
9. Quit and continue booting
Enter selection ==>The options in the stage 1 diagnostics menu allow you to
initiate the following tests:
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3.2
Enter Ctrl+D to display the diagnostic menu.
Enter Ctrl+B to display the bootloader menu.
RAM
The Bootloader fully tests any/all SDRAM installed in the system.
NVS
The Bootloader fully tests any/all non-volatile (battery backed) SRAM installed in the
system.
checksum
The Bootloader checksum ROM memory for error detection.
Software Reference for SwitchBlade® x908, x900 and x600 Series Switches
TM
AlliedWare Plus Operating System - Software Version 5.3.1 C613-50007-01 REV B