Install Guide

mac learning-limit no-station-move
The no-station-move option, also known as “sticky MAC,” provides additional port security by preventing a station move.
When you configure this option, the first entry in the table is maintained instead of creating an entry on the new interface.
no-station-move is the default behavior. Entries created before you set this option are not affected.
To display a list of all interfaces with a MAC learning limit, use the following command.
Display a list of all interfaces with a MAC learning limit.
EXEC Privilege mode
show mac learning-limit
Dell EMC Networking OS Behavior: The systems do not generate a station-move violation log entry for physical interfaces
or port-channels when you configure mac learning-limit or when you configure mac learning-limit station-
move-violation log. Dell EMC Networking OS detects a station-move violation only when you configure mac learning-
limit dynamic and logs the violation only when you configure the mac learning-limit station-move-violation
log, as shown in the following example.
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
● Display a list of all of the interfaces configured with MAC learning limit or station move violation.
CONFIGURATION mode
show mac learning-limit violate-action
NOTE:
When the MAC learning limit (MLL) is configured as no-station-move, the MLL will be processed as static
entries internally. For static entries, the MAC address will be installed in all port-pipes, irrespective of the VLAN
membership.
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