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mac learning-limit station-move
The station-move option, allows a MAC address already in the table to be learned off of another
interface.
For example, if you disconnect a network device from one interface and reconnect it to another
interface, the MAC address is learned on the new interface. When the system detects this “station move,”
the system clears the entry learned on the original interface and installs a new entry on the new interface.
Learning Limit Violation Actions
To configure the system to take an action when the MAC learning limit is reached on an interface and a
new address is received using one the following options with the
mac learning-limit command, use
the following commands.
• Generate a system log message when the MAC learning limit is exceeded.
INTERFACE mode
learn-limit-violation log
• Shut down the interface and generate a system log message when the MAC learning limit is
exceeded.
INTERFACE mode
learn-limit-violation shutdown
Setting Station Move Violation Actions
no-station-move is the default behavior. You can configure the system to take an action if a station
move occurs using one the following options with the
mac learning-limit command.
To display a list of interfaces configured with MAC learning limit or station move violation actions, use the
following commands.
• Generate a system log message indicating a station move.
INTERFACE mode
station-move-violation log
• Shut down the first port to learn the MAC address.
INTERFACE mode
station-move-violation shutdown-original
• Shut down the second port to learn the MAC address.
INTERFACE mode
station-move-violation shutdown-offending
• Shut down both the first and second port to learn the MAC address.
INTERFACE mode
station-move-violation shutdown-both
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