Managing MAC Address Table Security Configurations
User Guide
159
Step 5 interface { fastEthernet
port
| range fastEthernet
port-list
| gigabitEthernet
port
| range
gigabitEthernet
port-list
| ten-gigabitEthernet
port
| ten-range gigabitEthernet
port-list
}
Configure notification traps on the specified port.
port/ port-list:
The number or the list of the Ethernet port that you want to configure
notification traps.
Step 6 mac address-table notification {[learn-mode-change
enable | disable] [new-mac-learned
enable | disable]}
Enable learn-mode-change, exceed-max-learned, or new-MAC-learned notification traps on
the specified port.
enable | disable:Enable or disable learn-mode-change, exceed-max-learned, or new-MAC-
learned notification traps on the specified port.
learn-mode-change: With learn-mode-change enabled, when the learned mode of the
specified port is changed, a notification will be generated and sent to the management host.
new-mac-learned: With new-mac-learned enabled, when the specified port learns a new MAC
address, a notification will be generated and sent to the management host.
Step 7 end
Return to privileged EXEC mode.
Step 8 copy running-config startup-config
Save the settings in the configuration file.
Now you have configured MAC notification traps. To receive notifications, you need to
further enable SNMP and set a management host. For detailed SNMP configurations,
please refer to
Configuring SNMP & RMON.
The following example shows how to enable new-MAC-learned trap on port 1, and set the
interval time as 10 seconds. After you have further configured SNMP, the switch will bundle
notifications of new addresses in every 10 seconds and send to the management host.
Switch#configure
Switch(config)#mac address-table notification global-status enable
Switch(config)#mac address-table notification interval 10
Switch(config)#interface gigabitEthernet 1/0/1
Switch(config-if)#mac address-table notification new-mac-learned enable
Switch(config-if)#show mac address-table notification interface gigabitEthernet 1/0/1
Mac Notification Global Config
Notification Global Status : enable
Table Full Notification Status: disable
Notification Interval : 10
Port LrnMode Change New Mac Learned
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