Mac-Address Timer - HP 12500 Series Command Reference Manual

Related commands
mac-address
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mac-address max-mac-count (VLAN view)
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mac-address timer

Use mac-address timer to configure the aging timer for dynamic MAC address entries.
Use undo mac-address timer to restore the default.
Syntax
mac-address timer { aging seconds | no-aging }
undo mac-address timer
Default
The aging timer is 300 seconds.
Views
System view
Predefined user roles
network-admin
mdc-admin
Parameters
aging seconds: Sets an aging timer (in seconds) for dynamic MAC address entries, in the range of 10
to 3600.
no-aging: Sets dynamic MAC address entries not to age.
Usage guidelines
After the network topology changes, the dynamic MAC address entries are not updated in a timely
manner. As a result, the device cannot learn new MAC addresses and fails to forward the user traffic
correctly.
To solve this problem, set an appropriate aging time for dynamic MAC address entries. The device
automatically deletes the expired dynamic MAC address entries, and then the device learns new
MAC address entries to build new MAC address entries.
Follow these guidelines to set the aging timer appropriately:
A long aging interval causes the MAC address table to retain outdated entries and fail to
•
accommodate the latest network changes.
A short aging interval results in removal of valid entries and unnecessary broadcasts that
•
affect device performance.
Examples
# Set the aging time to 500 seconds for dynamic MAC address entries.
<Sysname> system-view
[Sysname] mac-address timer aging 500
Related commands
display mac-address aging-time
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