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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Chapter 7 Administering the Switch
Managing the MAC Address Table
Beginning in privileged EXEC mode, follow these steps to configure the switch to send MAC address
notification traps to an NMS host:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
snmp-server host host-addr {traps | informs} {version {1
| 2c | 3}} community-string notification-type
Specify the recipient of the trap message.
• For host-addr, specify the name or address of the
NMS.
• Specify traps (the default) to send SNMP traps
to the host. Specify informs to send SNMP
informs to the host.
• Specify the SNMP version to support. Version 1,
the default, is not available with informs.
• For community-string, specify the string to send
with the notification operation. Though you can
set this string by using the snmp-server host
command, we recommend that you define this
string by using the snmp-server community
command before using the snmp-server host
command.
• For notification-type, use the mac-notification
keyword.
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.