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Period.
Aging Period :
If Aging Enabled is checked, then the aging period is controlled with this input. If
other modules are using the underlying port security for securing MAC addresses,
they may have other requirements to the aging period. The underlying port security
will use the shorter requested aging period of all modules that use the functionality.
The Aging Period can be set to a number between 10 and 10,000,000 seconds.
To understand why aging may be desired, consider the following scenario: Suppose
an end-host is connected to a 3rd party switch or hub, which in turn is connected to
a port on this switch on which Limit Control is enabled. The end-host will be
allowed to forward if the limit is not exceeded. Now suppose that the end-host logs
off or powers down. If it wasn't for aging, the end-host would still take up resources
on this switch and will be allowed to forward. To overcome this situation, enable
aging. With aging enabled, a timer is started once the end-host gets secured. When
the timer expires, the switch starts looking for frames from the end-host, and if such
frames are not seen within the next Aging Period, the end-host is assumed to be
disconnected, and the corresponding resources are freed on the switch.
Port Configuration
The table has one row for each port on the selected switch and a number of
columns, which are:
Port :
The port number to which the configuration below applies.
Mode :
Controls whether Limit Control is enabled on this port. Both this and the Global
Mode must be set to Enabled for Limit Control to be in effect. Notice that other
modules may still use the underlying port security features without enabling Limit
Control on a given port.
Action :
If Limit is reached, the switch can take one of the following actions:
None: Do not allow more than Limit MAC addresses on the port, but take no
further action.
Trap: If Limit + 1 MAC addresses is seen on the port, send an SNMP trap. If Aging is
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