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Catalyst 2960 and 2960-S Switch Software Configuration Guide
OL-8603-09
Chapter 5 Administering the Switch
Managing the MAC Address Table
To disable MAC address-change notification traps, use the no snmp-server enable traps
mac-notification change global configuration command. To disable the MAC address-change
notification traps on a specific interface, use the no snmp trap mac-notification change {added |
removed} interface configuration command. To disable the MAC address-change notification feature,
use the no mac address-table notification change global configuration command.
This example shows how to specify 172.20.10.10 as the NMS, enable the switch to send MAC address
notification traps to the NMS, enable the MAC address-change notification feature, set the interval time
to 123 seconds, set the history-size to 100 entries, and enable traps whenever a MAC address is added
on the specified port.
Switch(config)# snmp-server host 172.20.10.10 traps private mac-notification
Switch(config)# snmp-server enable traps mac-notification change
Switch(config)# mac address-table notification change
Switch(config)# mac address-table notification change interval 123
Switch(config)# mac address-table notification change history-size 100
Switch(config)# interface gigabitethernet0/2
Switch(config-if)# snmp trap mac-notification change added
You can verify your settings by entering the show mac address-table notification change interface and
the show mac address-table notification change privileged EXEC commands.
Step 5
mac address-table notification change [interval value]
[history-size value]
Enter the trap interval time and the history table size.
• (Optional) For interval value, specify the
notification trap interval in seconds between
each set of traps that are generated to the NMS.
The range is 0 to 2147483647 seconds; the
default is 1 second.
• (Optional) For history-size value, specify the
maximum number of entries in the MAC
notification history table. The range is 0 to 500;
the default is 1.
Step 6
interface interface-id Enter interface configuration mode, and specify the
interface on which to enable the SNMP MAC
address notification trap.
Step 7
snmp trap mac-notification change {added | removed} Enable the MAC address change notification trap on
the interface.
• Enable the trap when a MAC address is added
on this interface.
• Enable the trap when a MAC address is removed
from this interface.
Step 8
end Return to privileged EXEC mode.
Step 9
show mac address-table notification change interface
show running-config
Verify your entries.
Step 10
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose