Mac Learning-Limit Learn-Limit-Violation - Dell Force10 Z9000 Reference Manual

Version 6.5.1.0
Usage
This command and its options are supported on physical interfaces, static LAGs, LACP LAGs,
Information
and VLANs.
If you do not specify the vlan option, 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 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.
After 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.
When a channel member is added to a port-channel and there is not enough ACL CAM space,
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.
Related
clear counters
Commands
clear mac-address-table dynamic
dynamically.
mac learning-limit mac-address-sticky
parameter.
show mac learning-limit

mac learning-limit learn-limit-violation

Configure an action for a MAC address learning-limit violation.
C-Series, E-Series, S-Series, Z-Series, S4810
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
Added support for MAC Learning-Limit on the LAG.
NOTE: If you configure this command on an interface in a routed VLAN, and after 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.
– Clear counters used in the show interface command.
– displays MAC learning-limit configuration.
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.
– clears the MAC address table of all MAC address learned
– Replaces deprecated no-station-move
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