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Junos OS System Logging Facilities and Message Severity Levels

 

Table 1 lists the Junos OS system logging facilities that you can specify in configuration statements at the [edit system syslog] hierarchy level.

To view all the facilities and severities, see Interpreting Messages Generated in Structured-Data Format.

Table 1: Junos OS System Logging Facilities

Facility (number)

Type of Event or Error

kernel (0)

Actions performed or errors encountered by the Junos OS kernel

user (1)

Actions performed or errors encountered by user-space processes

daemon (3)

Actions performed or errors encountered by system processes

authorization (4)

Authentication and authorization attempts

ftp (11)

Actions performed or errors encountered by the FTP process

ntp (12)

Actions performed or errors encountered by the Network Time Protocol processes.

security (13)

Security related events or errors.

dfc (17)

Events related to dynamic flow capture

external (18)

Actions performed or errors encountered by the local external applications.

firewall (19)

Packet filtering actions performed by a firewall filter

pfe (20)

Actions performed or errors encountered by the Packet Forwarding Engine

conflict-log (21)

Specified configuration is invalid on the router type

change-log (22)

Changes to the Junos OS configuration

interactive-commands (23)

Commands issued at the Junos OS command-line interface (CLI) prompt or by a client application such as a Junos XML protocol or NETCONF XML client

Table 2 lists the severity levels that you can specify in configuration statements at the [edit system syslog] hierarchy level. The levels from emergency through info are in order from highest severity (greatest effect on functioning) to lowest.

Unlike the other severity levels, the none level disables logging of a facility instead of indicating how seriously a triggering event affects routing functions. For more information, see Disabling the System Logging of a Facility.

Table 2: System Log Message Severity Levels

Value

Severity Level

Description

N/A

none

Disables logging of the associated facility to a destination

0

emergency

System panic or other condition that causes the router to stop functioning

1

alert

Conditions that require immediate correction, such as a corrupted system database

2

critical

Critical conditions, such as hard errors

3

error

Error conditions that generally have less serious consequences than errors at the emergency, alert, and critical levels

4

warning

Conditions that warrant monitoring

5

notice

Conditions that are not errors but might warrant special handling

6

info

Events or nonerror conditions of interest

7

any

Includes all severity levels