Allied Telesis AT-S63 - Manual (Page 133)

AT-S63 Management Software Features Guide
Section II: Advanced Operations 133
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 a problem occurred.
The operation of the switch can be monitored by viewing the event
messages generated by the device. These events and the vital information
about system activity that they provide can help identify and solve system
problems.
Event Messages
Event messages include the following information:
 The time and date of the event
 The severity of the event
 The management module that generated the event
 An event description
The switch has two event logs for storing the event messages. One log is
located in temporary memory and has a storage capacity of 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 when the switch is reset or power cycled. Both logs store the
same events messages. 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.