Users Guide

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.
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.
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
Commands
• mac learning-limit mac-address-sticky — replace deprecated no-station-move parameter.
• show mac learning-limit — display MAC learning-limit configuration.
mac learning-limit learn-limit-violation
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 Enter the keyword log to generate a syslog message on a learning-limit violation.
shutdown Enter the keyword shutdown to shut down the port on a learning-limit violation.
Defaults None
Command Modes INTERFACE (conf-if-interface-slot/port)
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.2.1.0 Introduced on the S-Series.
7.8.1.0 Introduced on the C-Series.
7.5.1.0 Introduced on the E-Series.
Usage Information This command is supported on physical interfaces, static LAGs, and LACP LAGs.
Related
Commands
• show mac learning-limit — display details of the mac learning-limit.
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