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566 | Layer 2
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Displaying MAC Learning-Limited Interfaces
To display a list of all interfaces with a MAC learning limit:
Learning Limit Violation Actions
Learning Limit Violation Actions are supported only on platform: e
You can 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 of the following options with the
mac learning-limit command:
Station Move Violation Actions
Station Move Violation Actions are supported only on platform: e c s
no-station-move is the default behavior (see mac learning-limit no-station-move on page 564). 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:.
Task Command Syntax Command Mode
Display a list of all interfaces with a MAC learning
limit.
show mac learning-limit
EXEC Privilege
Task Command Syntax Command Mode
Generate a system log message when the MAC learning
limit is exceeded.
learn-limit-violation log
INTERFACE
Shut down the interface and generate a system log
message when the MAC learning limit is exceeded.
learn-limit-violation shutdown
INTERFACE
Note: On a C-Series or S-Series switch, Station Move Violation actions are supported on interfaces on
different line cards; they are not supported on interfaces on the same line card.
Task Command Syntax Command Mode
Generate a system log message
indicating a station move.
station-move-violation log
INTERFACE
Shut down the first port to learn the
MAC address.
station-move-violation shutdown-original
INTERFACE
Shut down the second port to learn the
MAC address.
station-move-violation shutdown-offending
INTERFACE
Shut down both the first and second port
to learn the MAC address.
station-move-violation shutdown-both
INTERFACE