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Hierarchy Level


Configure the timeout interval for entries in the MAC table.


The global-mac-table-aging-time statement appears in the Junos OS CLI for devices that support the Enhanced Layer 2 Software (ELS) configuration style. If your device runs software that does not support ELS, use the mac-table-aging-time statement, which appears in the [edit ethernet-switching-options] and the [edit vlans] hierarchies. For ELS details, see Using the Enhanced Layer 2 Software CLI.


300 seconds


seconds—Time elapsed before MAC table entries are timed out and entries are deleted from the table.

  • Range: For MX Series routers: 10 through 1 million; for EX Series and QFX Series switches: 60 through 1 million; for SRX Series Firewalls: 10 through 64,000 seconds

Required Privilege Level

routing—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 9.2.

Statement modified in Junos OS Release 9.5.

Support for logical systems added in Junos OS Release 9.6.