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Auto Save on Reload, Crash, or Rollover
Exception information for the switch is stored in the flash:/TRACE_LOG_DIR directory. This directory
contains files that save trace information when there has been a task crash or timeout and trace
information from the Route Processor and Control Processor CPUs.
You can access the TRACE_LOG_DIR files by FTP or by using the show file command from the flash://
TRACE_LOG_DIR directory.
Last Restart Reason
If a switch 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.
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
show hardware Commands
Use the show hardware commands to troubleshoot error conditions by displaying information about a
hardware subcomponent and details from hardware-based feature tables.
NOTE: Use the show hardware commands only under the guidance of the Dell Networking
Technical Assistance Center (TAC).
• Display internal interface status of the line-card CPU port which connects to the external
management interface.
show hardware linecard {0-2} cpu management statistics
• Display driver-level statistics for the data-plane port on the CPU for the specified line card.
show hardware linecard {0-2} cpu data-plane statistics
The command output provides details about 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.
• Display internal status and driver-level CPU port statistics of the Control Processor and Route
Processor.
show hardware cp cpu {data-plane | i2c| management | sata-interface}
statistics
show hardware rp cpu {data-plane | i2c| management | sata-interface}
statistics
The command output provides details about 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.
• Display detailed information on the modular packet buffers per line card and the mode of allocation.
Debugging and Diagnostics
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