Cisco 3845 - Security Bundle Router Software Manual page 350
Software configuration guide
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Configuring Flex Links and MAC Address-Table Move Update
Beginning in privileged EXEC mode, follow these steps to configure an access switch to send MAC
address-table move updates:
Command
Step 1
configure terminal
Step 2
interface interface-id
Step 3
switchport backup interface interface-id
or
switchport backup interface interface-id mmu
primary vlan vlan-id
Step 4
end
Step 5
mac address-table move update transmit
Step 6
end
Step 7
show mac address-table move update
Step 8
copy running-config startup config
To disable the MAC address-table move update feature, use the no mac address-table move update
transmit interface configuration command. To display the MAC address-table move update information,
use the show mac address-table move update privileged EXEC command.
This example shows how to configure an access switch to send MAC address-table move update
messages:
Switch# configure terminal
Switch(conf)# interface gigabitethernet0/1
Switch(conf-if)# switchport backup interface gigabitethernet0/2 mmu primary vlan 2
Switch(conf-if)# exit
Switch(conf)# mac address-table move update transmit
Switch(conf)# end
This example shows how to verify the configuration:
Switch# show mac-address-table move update
Switch-ID : 010b.4630.1780
Dst mac-address : 0180.c200.0010
Vlans/Macs supported : 1023/8320
Default/Current settings: Rcv Off/On, Xmt Off/On
Max packets per min : Rcv 40, Xmt 60
Rcv packet count : 5
Rcv conforming packet count : 5
Rcv invalid packet count : 0
Rcv packet count this min : 0
Rcv threshold exceed count : 0
Cisco ME 3800X and 3600X Switch Software Configuration Guide
17-12
Chapter 17
Configuring Flex Links and the MAC Address-Table Move Update Feature
Purpose
Enter global configuration mode.
Specify the interface, and enter interface configuration mode.
The interface can be a physical Layer 2 interface or a port
channel (logical interface). The port-channel range is 1 to 48.
Configure a physical Layer 2 interface (or port channel), as part
of a Flex Link pair with the interface. The MAC address-table
move update VLAN is the lowest VLAN ID on the interface.
Configure a physical Layer 2 interface (or port channel) and
specify the VLAN ID on the interface, which is used for sending
the MAC address-table move update.
When one link is forwarding traffic, the other interface is in
standby mode.
Return to global configuration mode.
Enable the access switch to send MAC address-table move
updates to other switches in the network if the primary link goes
down and the switch starts forwarding traffic through the standby
link.
Return to privileged EXEC mode.
Verify the configuration.
(Optional) Save your entries in the switch startup configuration
file.
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