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• Application core dump is 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.
Dell Networking OS sends event messages to the internal buer, all terminal lines, the console, and optionally to a syslog server. For more
information about event messages and congurable options, refer to Switch 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 trac. Existing entries are simply shued to accommodate new entries.
Hot-Lock IP ACLs allow 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
conguring ACLs, refer to Access Control Lists (ACLs).
Component Redundancy
Dell EMC Networking systems eliminate single points of failure by providing dedicated or load-balanced redundancy for each component.
Automatic and Manual Stack Unit Failover
Stack unit failover is the process of the standby unit becoming a management unit.
Dell EMC Networking OS fails over to the standby stack unit when:
1 Communication is lost between the standby and primary stack unit.
2 You request a failover via the CLI.
To display the reason for the last failover, use the show redundancy command from EXEC Privilege mode.
Example of the show redundancy Command
DellEMC#show redundancy
-- Stack-unit Status --
------------------------------------------------
Mgmt ID: 0
Stack-unit ID: 0
Stack-unit Redundancy Role: Primary
Stack-unit State: Active
Stack-unit SW Version: 9.6(0.0)
Link to Peer: Down
Peer Stack-unit: not present
-- Stack-unit Redundancy Configuration --
------------------------------------------------
Primary Stack-unit: mgmt-id 0
Auto Data Sync: Full
Failover Type: Hot Failover
Auto reboot Stack-unit: Enabled
Auto failover limit: 3 times in 60 minutes
-- Stack-unit Failover Record --
------------------------------------------------
Failover Count: 0
Last failover timestamp: None
Last failover Reason: None
High Availability (HA)
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