Reference Guide

902 | Z-Series Debugging and Diagnostics
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Last restart reason (Z9000)
If an Z9000 system restarted for some reason (automatically or manually), the show system command
output includes the reason for the restart. The following table shows the reasons displayed in the output
and their corresponding causes.
Hardware watchdog timer
The hardware watchdog command automatically reboots an FTOS switch/router when a unit is
unresponsive. This is a last resort mechanism intended to prevent a manual power cycle.
show hardware commands (Z9000)
The show hardware command tree consists of EXEC Privilege commands used with the Z9000 system.
These commands display information from a hardware sub-component and from hardware-based feature
tables.
Table 48-2 lists the
show hardware commands available as of the latest FTOS version on the Z9000.
Table 48-1. Line card restart causes and reasons
Causes Displayed Reasons
Remote power cycle of the chassis push button reset
reload soft reset
reboot after a crash soft reset
Command Description
hardware watchdog Enable the hardware watchdog mechanism.
Note: The show hardware command tree is supported on the Z9000 only.
Note: The show hardware commands should only be used under the guidance of the Dell Force10
Technical Assistance Center.