Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 473

• 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 exception. System Log 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 Switch Management. Control Plane Redundancy The switch eliminates single points of failure by providing dedicated or load-balanced redundancy for various components. To configure redundancy features, use the following commands. Table 34. Commands to configure Control Plane redundancy Command Description redundancy autofailover-limit redundancy primary (rpm0 | rpm1) redundancy disableauto-reboot pe all redundancy disableauto-reboot pe id stack-unit redundancy disableauto-reboot 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 fails. Prevents the system from automatically rebooting when the switch fails. Displays the current redundancy configuration. High Availability (HA) 473