Reference Guide

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.
show hardware linecard {0-2} buffer total-buffer
● Display the modular packet buffers details per unit and the mode of allocation.
show hardware linecard {0-2} buffer unit {0-3} total-buffer
●
Display the forwarding plane statistics containing the packet buffer usage per port per line card.
show hardware linecard {0-2} buffer unit {0-3} port {1-104 | all} buffer-info
● Display the forwarding plane statistics containing the packet buffer statistics per CoS per port.
show hardware linecard {0-2} buffer unit {0-3} port {1-104} queue {0-20 | all} buffer-
info
● Display input and output statistics on the party bus, which carries inter-process communication traffic between CPUs.
show hardware party-bus {port {0-7} | all} statistics
● Display the ingress and egress internal packet-drop counters, MAC drop counters, and FP packet drops for the line card on a
per port basis.
show hardware linecard {0-2} drops unit {0-3} port {1-104}
Use the command output to troubleshoot a line card and port-pipe unit that may experience internal drops.
● Display the input and output statistics for a stack-port interface.
show hardware linecard {0-2} unit {0-3}
● Display the counters in the field processors of a port-pipe unit on a line card.
Debugging and Diagnostics
253