Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 536

• 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 Recovering from Learning Limit and Station Move Violations After a learning-limit or station-move violation shuts down an interface, you must manually reset it. To reset the learning limit, use the following commands. NOTE: Alternatively, you can reset the interface by shutting it down using the shutdown command and then re-enabling it using the no shutdown command. • Reset interfaces in the ERR_Disabled state caused by a learning limit violation or station move violation. EXEC Privilege mode mac learning-limit reset • Reset interfaces in the ERR_Disabled state caused by a learning limit violation. EXEC Privilege mode mac learning-limit reset learn-limit-violation [interface | all] • Reset interfaces in the ERR_Disabled state caused by a station move violation. EXEC Privilege mode mac learning-limit reset station-move-violation [interface | all] Disabling MAC Address Learning on the System You can configure the system to not learn MAC addresses from LACP and LLDP BPDUs. To disable source MAC address learning from LACP and LLDP BPDUs, follow this procedure: • Disable source MAC address learning from LACP BPDUs. CONFIGURATION mode mac-address-table disable-learning lacp • Disable source MAC address learning from LLDP BPDUs. CONFIGURATION mode mac-address-table disable-learning lldp • Disable source MAC address learning from LACP and LLDP BPDUs. CONFIGURATION mode mac-address-table disable-learning Layer 2 536