Allied Telesis AT-S63 - Manual (Page 208)

Chapter 12: Event Log
208 Section II: Advanced Features
Event Log Overview
A managed switch is a complex piece of computer equipment that
includes both hardware and software. Multiple software features
operate simultaneously, interoperating with each other and processing
large amounts of network traffic. It is often difficult to determine exactly
what is happening when a switch appears not to be operating normally,
or what happened when the problem occurred.
A network manager’s major task is to monitor the system functions and
to deal with problems as they arise. The event log provides vital
information about system activity on an AT-9400 Series switch that helps
you identify and solve system problems. The event log includes the
following information:
❑ The time and date of an event
❑ The severity of an event
❑ The AT-S63 software module that generated the event
❑ A description of the event
The switch has two event logs. The first is located in temporary memory
and can store up to 4,000 entries. The events in this log are purged
whenever you reset or power cycle the switch. The second log is located
in permanent memory and has a maximum storage capacity of 2,000
entries. Events in this log are retained even when the switch is reset or
power cycled. You can view either log to display the events of the switch
since the unit was last reset. But to view the events that preceded a
system reset, you must view the permanent event log.
Note
The event logs, even when disabled, log all AT-S63 initialization
events that occur when the switch is reset or power cycled. Any
switch events that occur after AT-S63 initialization are entered into
the logs only if you enable the event log feature. The default setting
for the event log feature is enabled.