The JUNOS Software generates system log messages (also called syslog messages) to record events that occur on the router, including the following:
Each system log message identifies the JUNOS Software process that generated the message and briefly describes the operation or error that occurred. For detailed information about specific system log messages, see the JUNOS System Log Messages Reference.
Note: This topic describes system log messages for JUNOS Software processes and libraries and not the services on a Physical Interface Card (PIC) such as the Adaptive Services PIC. For information about configuring system logging for PIC services, see the JUNOS Services Interfaces Configuration Guide.