Mac Learning-Limit No-Station-Move; Learning Limit Violation Actions; Setting Station Move Violation Actions - Dell Force10 Z9000 Configuration Manual

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 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-te-1/1)#show config
!
interface TenGigabitEthernet 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
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Layer 2