Administrator Guide

● 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
NOTE: When the MAC learning limit (MLL) is configured as no-station-move, the MLL will be processed as static
entries internally. For static entries, the MAC address will be installed in all port-pipes, irrespective of the VLAN
membership.
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]
NIC Teaming
Network interface controller (NIC) teaming is available on the Z-Series platform.
NIC teaming is a feature that allows multiple network interface cards in a server to be represented by one MAC address and one
IP address in order to provide transparent redundancy, balancing, and to fully utilize network adapter resources.
The following illustration shows a topology where two NICs have been teamed together. In this case, if the primary NIC fails,
traffic switches to the secondary NIC because they are represented by the same set of addresses.
Figure 55. Redundant NICs with NIC Teaming
When you use NIC teaming, consider that the server MAC address is originally learned on Port 0/1 of the switch (shown in
the following) and Port 0/5 is the failover port. When the NIC fails, the system automatically sends an ARP request for the
gateway or host NIC to resolve the ARP and refresh the egress interface. When the ARP is resolved, the same MAC address
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Layer 2