JUNOS Software System Log Configuration Overview
The JUNOS Software generates system log messages (also called syslog messages) to record events that occur on the router, including the following:
- Routine operations, such as creation of an Open Shortest Path First (OSPF) protocol adjacency or a user login into the configuration database
- Failure and error conditions, such as failure to access a configuration file or unexpected closure of a connection to a peer process
- Emergency or critical conditions, such as router power-down due to excessive temperature
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. |
