Users Guide

show mac learning-limit
Dell 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 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.
Dell(conf-if-gi-1/1)#show config
!
interface GigabitEthernet 1/1
no ip address
switchport
mac learning-limit 1 dynamic no-station-move
mac learning-limit station-move-violation log
no shutdown
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
Layer 2 521