Configuring System Log Messages

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The JUNOS software generates system log messages (also called syslog messages) to record events that occur on the routing platform, 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 routing platform 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. This chapter explains how to configure system logging. For detailed information about specific system log messages, see the JUNOS System Log Messages Reference.

Note: The configuration hierarchy in this chapter applies to JUNOS software processes and libraries, not to 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.

This chapter discusses the following topics:

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