Adding And Removing Static Address Entries - Cisco WS-C3750-48PS-S Software Configuration Manual

Chapter 7 Administering the Switch
Command
Step 9 show mac address-table notification interface
show running-config
Step 10
copy running-config startup-config
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 the
specified port.
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 gigabitethernet1/0/2
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.

Adding and Removing Static Address Entries

A static address has these characteristics:
•
•
•
You can add and remove static addresses and define the forwarding behavior for them. The forwarding
behavior defines how a port that receives a packet forwards it to another port for transmission. Because
all ports are associated with at least one VLAN, the switch acquires the VLAN ID for the address from
the ports that you specify. You can specify a different list of destination ports for each source port.
A packet with a static address that arrives on a VLAN where it has not been statically entered is flooded
to all ports and not learned.
You add a static address to the address table by specifying the destination MAC unicast address and the
VLAN from which it is received. Packets received with this destination address are forwarded to the
interface specified with the interface-id option.
When you configure a static MAC address in a private-VLAN primary or secondary VLAN, you should
also configure the same static MAC address in all associated VLANs. Static MAC addresses configured
in a private-VLAN primary or secondary VLAN are not replicated in the associated VLAN. For more
information about private VLANs, see
78-16180-02
It is manually entered in the address table and must be manually removed.
It can be a unicast or multicast address.
It does not age and is retained when the switch restarts.
Purpose
Verify your entries.
(Optional) Save your entries in the configuration file.
Chapter 15, "Configuring Private VLANs."
Catalyst 3750 Switch Software Configuration Guide
Managing the MAC Address Table
7-25