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size (System)


Hierarchy Level


Configure the maximum amount of data that the Junos OS logging utility writes to a log file logfile before archiving it (closing it, compressing it, and changing its name to logfile.0.gz). The utility then opens and writes to a new file called logfile. For information about the number of archive files that the utility creates in this way, see files.


size—Maximum size of each system log file, in kilobytes (KB), megabytes (MB), or gigabytes (GB).

  • Syntax: xk to specify the number of kilobytes, xm for the number of megabytes, or xg for the number of gigabytes

  • Range: 64 KB through 1 GB

  • Default: 1 MB for MX Series routers the QFX Series, and the OCX Series

Required Privilege Level

system—To view this statement in the configuration.

system-control—To add this statement to the configuration.

Release Information

Statement introduced before Junos OS Release 7.4.