Dell S4048-ON, Configuration Manual

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• Crash Log — contains trace messages related to IPC and IRC timeouts and task crashes on line cards and is stored under the
directory CRASH_LOG_DIR.
For more information about trace logs and configuration options, refer to S-Series Debugging and Diagnostics .
Core Dumps
A core dump is the contents of RAM a program uses at the time of a software exception and is used to identify the cause of the
exception.
There are two types of core dumps: application and kernel.
• Application core dump is the contents of the memory allocated to a failed application at the time of an exception.
• Kernel core dump is the central component of an operating system that manages system processors and memory allocation and
makes these facilities available to applications. A kernel core dump is the contents of the memory in use by the kernel at the time
of an exception.
System Log
Event messages provide system administrators diagnostics and auditing information.
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, refer to
Management .
Hot-Lock Behavior
Dell Networking OS hot-lock features allow you to append and delete their corresponding content addressable memory (CAM)
entries dynamically without disrupting traffic. Existing entries are simply shuffled to accommodate new entries.
Hot-Lock IP ACLs allows you to append rules to and delete rules from an access control list (ACL) that is already written to CAM.
This behavior is enabled by default and is available for both standard and extended ACLs on ingress and egress. For information
about configuring ACLs, refer to
Access Control Lists (ACLs) .
High Availability (HA)
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