mac learning-limit no-station-moveThe 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 modeshow mac learning-limitDell 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-limitdynamic and logs the violation only when you configure the mac learning-limit station-move-violation log, asshown in the following example.Dell(conf-if-te-1/1)#show config!interface TenGigabitEthernet 1/1no ip addressswitchportmac learning-limit 1 dynamic no-station-movemac learning-limit station-move-violation logno shutdownLearning Limit Violation ActionsTo configure the system to take an action when the MAC learning limit is reached on an interface and a new address is receivedusing 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 modelearn-limit-violation log• Shut down the interface and generate a system log message when the MAC learning limit is exceeded.INTERFACE modelearn-limit-violation shutdownSetting Station Move Violation Actionsno-station-move is the default behavior. You can configure the system to take an action if a station move occurs using one thefollowing 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 modestation-move-violation log• Shut down the first port to learn the MAC address.INTERFACE modestation-move-violation shutdown-original• Shut down the second port to learn the MAC address.INTERFACE modeLayer 2 395
