mac-table-aging-time
Syntax
mac-table-aging-time (seconds | unlimited);
Hierarchy Level
[edit ethernet-switching-options], [edit vlans vlan-name]
Description
You configure how long MAC addresses remain in the Ethernet switching table using the
mac-table-aging-time statement in either the [edit
ethernet-switching-options] or the[edit vlans]
hierarchy, depending on whether you want to configure it for the entire device or
only for specific VLANs.
If you specify the time as unlimited, entries are
never removed from the table. Generally, use this setting only if
the device or the VLAN has a fairly static number of end devices;
otherwise the table will eventually fill up. You can use this setting
to minimize traffic loss and flooding that might occur when traffic
arrives for MAC addresses that have been removed from the table.
The mac-table-aging-time statement appears
in the Junos OS CLI for devices that do not support
the Enhanced Layer 2 Software (ELS) configuration style. If your device
runs software that supports ELS, use the global-mac-table-aging-time statement, which appears in the [edit protocols l2-learning] hierarchy. For ELS details, see Using the Enhanced Layer 2 Software CLI.
Default
Entries remain in the Ethernet switching table for 300 seconds.
Options
seconds—Time
that entries remain in the Ethernet switching table before being removed.
Range: 60 through 1,000,000 seconds
Default: 300 seconds
unlimited—Entries remain in the Ethernet switching
table.
Required Privilege Level
system—To view this statement in the configuration.
system-control—To add this statement to the configuration.
Release Information
Statement introduced in Junos OS Release 9.0.
Statement updated in Junos OS Release 9.4 for EX Series switches
to include [edit ethernet-switching-options] hierarchy
level.