FTOS Configuration Guide for the C-Series - Force10 Networks

The no-station-move and station-move options are not mutually exclusive with the dynamic option.
You can configure them singly or together, and in any order, as shown in Figure 107. When the original
interface gets unplugged, the no-station-move setting does not prevent a reassignment of the MAC
address. In other words, the table clears all address learned on the interface (physical port). So, even
though no-station-move is configured on the unplugged interface, all those MAC addresses can be
learned on any other interface (physical port).
Figure 107 shows four ways to specify a MAC address learning limit of 10 on port 16.
Figure 107 mac learning-limit Command Example
Force10(conf-if-gi-1/16)#mac learning-limit 10
Force10(conf-if-gi-1/16)#mac learning-limit 10 dynamic
Force10(conf-if-gi-1/16)#mac learning-limit 10 no-station-move
Force10(conf-if-gi-1/16)#mac learning-limit 10 dynamic no-station-move
Verifying MAC learning-limit settings
To display MAC address learning limits, use the show mac learning-limit [interface interface |
detail] [detail] command in the EXEC mode.
Figure 108 show mac learning-limit Command Example
Force10# show mac learning-limit detail
Interface Vlan Station-Move Type
Gi 0/0 10 Enable Static
Gi 0/1 10 Disable Dynamic
Recovering from MAC address learning-limit violations
After a learning-limit violation shuts down an interface, you must manually reset it. Use the following
command in the CONFIGURATION mode:
Command Syntax Command Mode Purpose
mac learning-limit reset
[learn-limit-violation
{interface interface | all} |
station-move-violation
{interface interface | all}]
CONFIGURATION Optionally, enter either one of the following keywords:
• learn-limit-violation: Reset ERR_Disabled state
caused by a learn-limit violation.
• station-move-violation: Reset ERR_Disabled
state caused by a station-move violation.
After entering one of the first two options, enter one of
the following keywords:
• interface interface: Enter the interface keyword
and the interface ID (port number or LAG) to
designate a specific interface to reenable.
• all: Reenable all interfaces shut down by a
learning-limit violation.
Note: Alternatively, you can use the standard commands shutdown and then no shutdown to reenable
a specific interface, but a no shutdown all command also administratively enables interfaces that are
shut down whether or not they were shut down by a learning-limit violation.
FTOS Configuration Guide, version 7.7.1.0 201