You can set it to 10 seconds or just add a static entry.
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mac-address-table aging-time
Use the mac-address-table aging-time global configuration command to set the length of time that a dynamic entry remains in the MAC address table after the entry is used or updated. Use the no form of this command to use the default aging-time interval. The aging time applies to all VLANs.
mac-address-table aging-time age
no mac-address-table aging-time
Syntax Description age
Number from 10 to 1000000 (seconds).
Defaults
The default is 300 seconds.
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mac-address-table static
Use the mac-address-table static global configuration command to add static addresses to the MAC address table. Use the no form of this command to remove static entries from the MAC address table.
mac-address-table static hw-addr in-port out-port-list [atm slot/port] [vlan vlan-id]
no mac-address-table static hw-addr [in-port in-port] [out-port-list out-port-list] [vlan vlan-id]
Syntax Description hw-addr
MAC address to add to the address table.
in-port
Input port from which packets received with a destination address of hw-addr are forwarded to the list of ports in the out-port-list. The in-port must belong to the same VLAN as all the ports in the out-port-list
out-port-list
List of ports to which packets received on ports in in-port are forwarded. All ports in the list must belong to the same VLAN.
atm slot/port
(Optional) Add static addresses to ATM module in slot 1 or 2. The port is always 0 for an ATM interface.
vlan vlan-id
(Optional) The interface and vlan parameters together specify a destination to which packets destined for the specified MAC address are forwarded.
The vlan keyword is optional if all the ports specified by in-port and out-port-list are static-access VLAN ports. The VLAN assigned to the ports is assumed. This keyword is required for multi-VLAN and trunk ports.
Dynamic-access ports cannot be included in static addresses as either the source (inport) or destination (outport).
The vlan keyword is required on trunk ports to specify to which VLAN the static address is assigned.
The vlan-id is the ID of the VLAN to which static address entries are forwarded. Valid IDs are 1 to 1005; do not enter leading zeroes.
Command Modes
Global configuration
Command History Release Modification
11.2(8)SA
This command was first introduced.
11.2(8)SA3
The vlan keyword was added.
11.2(8)SA5
The atm keyword was added.
