Core Dumps; System Log; Control Plane Redundancy - Dell C9000 Series Networking Configuration Manual

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Crash Log — contains trace messages that relate to IPC and IRC timeouts and task crashes on linecards

and are stored under the directory CRASH_LOG_DIR.

Core Dumps

A core dump is the contents of RAM a program uses at the time of a software exception and identifies the

cause of the exception.

There are two types of core dumps: application and kernel.

Kernel core dump — the central component of an OS that manages system processors and memory

allocation and makes these facilities available to applications. A kernel core dump is the contents of the

memory the kernel uses at the time of an exception.

Application core dump — the contents of the memory allocated to a failed application at the time of an

Event messages provide system administrators diagnostics and auditing information.

The Dell Networking OS sends event messages to the internal buffer, all terminal lines, the console, and

optionally to a syslog server. For more information about event messages and configurable options, see

The switch eliminates single points of failure by providing dedicated or load-balanced redundancy for various

To configure redundancy features, use the following commands.

Table 34. Commands to configure Control Plane redundancy

redundancy auto-

failover-limit

redundancy primary

(rpm0 | rpm1)

redundancy disable-

auto-reboot pe all

redundancy disable-

auto-reboot pe id

redundancy disable-

show redundancy

Limits the number of failovers for a specific period.

Select preferred RPM as primary.

Prevents all the PEs from automatically rebooting when the switch fails.

Prevents all the PEs in a stack from automatically rebooting when the switch

Prevents the system from automatically rebooting when the switch fails.

Displays the current redundancy configuration.

High Availability (HA)