Users Guide

• 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 auto-
failover-limit
Limits the number of failovers for a specific period.
redundancy primary
(rpm0 | rpm1)
Select preferred RPM as primary.
redundancy disable-
auto-reboot pe all
Prevents all the PEs from automatically rebooting when the switch fails.
redundancy disable-
auto-reboot pe id
stack-unit
Prevents all the PEs in a stack from automatically rebooting when the switch
fails.
redundancy disable-
auto-reboot
Prevents the system from automatically rebooting when the switch fails.
show redundancy
Displays the current redundancy configuration.
High Availability (HA) 473