Dell Force10 S25N-S50N FTOS Command Line Reference Guide FTOS 8.4.2.7 E-Series - Page 873

station-move sticky (OPTIONAL) Enter the keyword station-move to allow a station move on learned MAC addresses. (OPTIONAL) C-Series and S-Series only: Enter the keyword sticky to enable sticky MAC-address learning, which converts dynamically-learned MAC addresses on a port or port-channel interface to "sticky" MAC addresses that prevent trusted devices from moving to a different interface. Defaults On C-Series, the default behavior is no-station-move + static. On E-Series, the default behavior is station-move + static. "Static" means manually entered addresses, which do not age. Command Modes INTERFACE Command History Version 8.4.2.3 Version 8.3.1.0 Version 8.2.1.0 Version 7.7.1.0 Version 6.5.1.0 Added the sticky option on the C-Series and S-Series. Added vlan option on E-Series. Introduced on S-Series Introduced on C-Series; added station-move option Added support for MAC Learning-Limit on LAG Usage This command and its options are supported on physical interfaces, static LAGs, LACP LAGs, and Information VLANs. If the vlan option is not specified, then the MAC address counters is not VLAN-based. That is, the sum of the addresses learned on all VLANs (not having any learning limit configuration) is counted against the MAC learning limit. MAC Learning Limit violation logs and actions are not available on a per-VLAN basis. With the keyword no-station-move option, MAC addresses learned through this feature on the selected interface will persist on a per-VLAN basis, even if received on another interface. Enabling or disabling this option has no effect on already learned MAC addresses. Once the MAC address learning limit is reached, the MAC addresses do not age out unless you add the dynamic option. To clear statistics on MAC address learning, use the clear counters command with the learning-limit parameter. Note: If you configure this command on an interface in a routed VLAN, and once the MAC addresses learned reaches the limit set in the mac learning-limit command, IP protocols are affected. For example, VRRP sets multiple VRRP Masters, and OSPF may not come up. When a channel member is added to a port-channel and there is not enough ACL CAM space, then the MAC limit functionality on that port-channel is undefined. When this occurs, un-configure the existing configuration first and then reapply the limit with a lower value. Layer 2 | 873