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Page 378 7450 ESS System Mangement Guide
Logging Overview
The two primary types of logging supported in the OS are event logging and accounting logs.
Event logging controls the generation, dissemination and recording of system events for
monitoring status and troubleshooting faults within the system. The OSgroups events into three
major categories or event sources:
• Security events — Events that pertain to attempts to breach system security.
• Change events — Events that pertain to the configuration and operation of the node.
• Main events — Events that pertain to applications that are not assigned to other event
categories/sources.
• Debug events — Events that pertain to trace or other debugging information.
The following are events within the OS and have the following characteristics:
• A time stamp in UTC or local time.
• The generating application.
• A unique event ID within the application.
• The VRF-ID.
• A subject identifying the affected object.
• A short text description.
Event control assigns the severity for each application event and whether the event should be
generated or suppressed. The severity numbers and severity names supported in the OS conform to
ITU standards M.3100 X.733 & X.21 and are listed in Table 37.
Events that are suppressed by event control will not generate any event log entries. Event control
maintains a count of the number of events generated (logged) and dropped (suppressed) for each
application event. The severity of an application event can be configured in event control.
Table 37: Event Severity Levels
Severity Number Severity Name
1
cleared
2
indeterminate (info)
3
critical
4
major
5
minor
6
warning
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