Mac Learning-Limit Mac-Address-Sticky; Mac Learning-Limit Station-Move; Mac Learning-Limit No-Station-Move - Dell C9000 Series Networking Configuration Manual

mac learning-limit mac-address-sticky

Using sticky MAC addresses allows you to associate a specific port with MAC addresses from trusted devices.
If you enable sticky MAC, the specified port retains any dynamically-learned addresses and prevents them
from being transferred or learned on other ports. Up to 1000 sticky entries are supported on a port.
If you configure mac-learning-limit and you enabled sticky MAC, all dynamically-learned addresses are
converted to sticky MAC addresses for the selected port. Any new MAC addresses learned on the port are
converted to sticky MAC addresses.
To save all sticky MAC addresses into a configuration file that can be used as a startup configuration file, use
the write config command. If the number of existing MAC addresses is fewer than the configured MAC
learning limit, additional MAC addresses are converted to sticky MACs addresse on the port. To remove all
sticky MAC addresses from the running configuration file, disable sticky MAC and enter the write config
command.
When you enable sticky MAC on an interface, dynamically-learned MAC addresses do not age, even if you
enabled mac-learning-limit dynamic. If you configured mac-learning-limit and mac-learning-
limit dynamic and you disabled sticky MAC, any dynamically-learned MAC address ages.

mac learning-limit station-move

The mac learning-limit station-move command allows a MAC address already in the table to be
learned from another interface.
For example, if you disconnect a network device from one interface and reconnect it to another interface, the
MAC address is learned on the new interface. When the system detects this "station move," the system clears
the entry learned on the original interface and installs a new entry on the new interface.

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
Layer 2 641