Dell Force10 S55T FTOS Command Line Reference Guide for the S55 System FTOS 8. - Page 625

Command History Version 8.3.5.0 Version 8.3.1.0 Version 8.2.1.0 Version 7.7.1.0 Version 6.5.1.0 Introduced on the S55. 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. Related Commands 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. clear counters clear mac-address-table dynamic show mac learning-limit Clear counters used in the show interface command Clear the MAC address table of all MAC address learned dynamically. Display MAC learning-limit configuration. mac learning-limit learn-limit-violation c e s Configure an action for a MAC address learning-limit violation. Syntax mac learning-limit learn-limit-violation {log | shutdown} To return to the default, use the no mac learning-limit learn-limit-violation {log | shutdown} command. Parameters log shutdown Enter the keyword log to generate a syslog message on a learning-limit violation. Enter the keyword shutdown to shut down the port on a learning-limit violation. Layer 2 | 625