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Catalyst 3550 Multilayer Switch Software Configuration Guide
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Chapter 6 Administering the Switch
Managing the MAC Address Table
To disable the switch from sending MAC address notification traps, use the no snmp-server enable
traps mac-notification global configuration command. To disable the MAC address notification traps
on a specific interface, use the no snmp trap mac-notification {added | removed} interface
configuration command. To disable the MAC address notification feature, use the no mac-address-table
notification 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 notification feature, set the interval time to 60
seconds, set the history-size to 100 entries, and enable traps whenever a MAC address is added on Fast
Ethernet interface 0/4.
Switch(config)# snmp-server host 172.20.10.10 traps private
Switch(config)# snmp-server enable traps mac-notification
Switch(config)# mac-address-table notification
Switch(config)# mac-address-table notification interval 60
Switch(config)# mac-address-table notification history-size 100
Switch(config)# interface fastethernet0/4
Switch(config-if)# snmp trap mac-notification added
You can verify the previous commands by entering the show mac-address-table notification interface
and the show mac-address-table notification privileged EXEC commands.
Step 3
snmp-server enable traps mac-notification Enable the switch to send MAC address traps to the
NMS.
Step 4
mac-address-table notification Enable the MAC address notification feature.
Step 5
mac-address-table notification [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 {added | removed} Enable the MAC address notification trap.
• Enable the MAC notification trap whenever a
MAC address is added on this interface.
• Enable the MAC notification trap whenever a
MAC address is removed from this interface.
Step 8
end Return to privileged EXEC mode.
Step 9
show mac-address-table notification interface
show running-config
Verify your entries.
Step 10
copy running-config startup-config (Optional) Save your entries in the configuration
file.
Command Purpose