Dell S6000 FTOS 9.0(2.0) Configuration Guide for the System - Page 524

www.dell.com | support.dell.com mac learning-limit dynamic The MAC address table is stored on the Layer 2 FIB region of the CAM. On the S-Series the Layer 2 FIB region allocates space for static MAC address entries and dynamic MAC address entries. When MAC Learning Limit is enabled, entries created on this port are static by default. When you configure the dynamic option, learned MAC addresses are stored in the dynamic region and are subject to aging. Entries created before this option is set are not affected. FTOS Behavior: If you do not configure the dynamic option, the S-Series do not detect station moves in which a MAC address learned off of a MAC-limited port is learned on another port on same line card. Therefore, FTOS does not take any configured station-move violation action. When a MAC address is relearned on any other stack-unit (any line card except the one to which the original MAC-limited port belongs), the station-move is detected, and the system takes the configured the violation action. mac learning-limit mac-address-sticky Using sticky MAC addresses allows you to associate a specific port with MAC addresses from trusted devices. If sticky MAC is enabled, the specified port will retain any dynamically-learned addresses and prevent them from being transferred or learned on other ports. If mac-learning-limit is configured and sticky MAC is enabled, all dynamically-learned addresses are converted to sticky MAC addresses for the selected port. Any new MAC addresses learned on this port will be 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 learn limit, any additional MAC addresses will be converted to sticky MACs on that interface. To remove all sticky MAC addresses from the running config file, disable sticky MAC and use the write config command. When sticky mac is enabled on an interface, dynamically-learned MAC addresses will not age, even if mac-learning-limit dynamic is enabled. If mac-learning-limit and mac-learning-limit dynamic are configured and sticky MAC is disabled, any dynamically-learned MAC addresses will age. mac learning-limit station-move mac learning-limit station-move is available only on platforms: s z The station-move option, allows a MAC address already in the table to be learned off of 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. 502 | Layer 2