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 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 reference provides more detailed information about each system log message and, when applicable, describes possible causes of the message and action you can take to correct error conditions.

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.

For information about interpreting messages generated by services on a PIC, see Interpreting Messages Generated in Standard Format by Services on a PIC.

This chapter discusses the following topics:

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