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CONFIGURATION mode
mac-address-table aging-time seconds
The range is from 10 to 1000000.
Configuring a Static MAC Address
A static entry is one that is not subject to aging. Enter static entries manually.
To create a static MAC address entry, use the following command.
• Create a static MAC address entry in the MAC address table.
CONFIGURATION mode
mac-address-table static
Displaying the MAC Address Table
To display the MAC address table, use the following command.
• Display the contents of the MAC address table.
EXEC Privilege mode
show mac-address-table [address | aging-time [vlan vlan-id]| count | dynamic
| interface | static | vlan]
– address: displays the specified entry.
– aging-time: displays the configured aging-time.
– count: displays the number of dynamic and static entries for all VLANs, and the total number of
entries.
– dynamic: displays only dynamic entries.
– interface: displays only entries for the specified interface.
– static: displays only static entries.
– vlan: displays only entries for the specified VLAN.
MAC Learning Limit
MAC address learning limit is a method of port security on Layer 2 port-channel and physical interfaces,
and VLANs. It allows you to set an upper limit on the number of MAC addresses that learned on an
interface/VLAN. After the limit is reached, the system drops all traffic from a device with an unlearned
MAC address.
This section describes the following:
• Setting the MAC Learning Limit
• mac learning-limit Dynamic
• mac learning-limit mac-address-sticky
• mac learning-limit station-move
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Layer 2