Users Guide

Last Restart Reason
If the system restarts 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.
Table 86. 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
Hardware Watchdog Timer
The hardware watchdog command automatically reboots an Dell Networking OS switch/router with a
single RPM that is unresponsive.
This is a last resort mechanism intended to prevent a manual power cycle.
Using the Show Hardware Commands
The show hardware command tree consists of commands used with the system. These commands display
information from a hardware sub-component and from hardware-based feature tables.
NOTE
: Use the show hardware commands only under the guidance of the Dell Technical Assistance
Center.
The following lists the show hardware commands available as of the latest Dell Networking OS version.
• View internal interface status of the stack-unit CPU port which connects to the external management
interface.
EXEC Privilege mode
show hardware stack-unit {1–12} cpu management statistics
• View driver-level statistics for the data-plane port on the CPU for the specified stack-unit.
EXEC Privilege mode
show hardware stack-unit {1–12} cpu data-plane statistics
This view provides insight into the packet types entering the CPU to see whether CPU-bound traffic is
internal (IPC traffic) or network control traffic, which the CPU must process.
• View input and output statistics on the party bus, which carries inter-process communication traffic
between CPUs.
Debugging and Diagnostics 1140