Cisco Catalyst 3750-X User Manual

23-12
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 23 Configuring Flex Links and the MAC Address-Table Move Update Feature
Configuring Flex Links and MAC Address-Table Move Update
Configuring the MAC Address-Table Move Update Feature
This section contains this information:
• Configuring a switch to send MAC address-table move updates
• Configuring a switch to get MAC address-table move updates
Beginning in privileged EXEC mode, follow these steps to c
onfigure an access switch to send MAC
address-table move updates:
To disable the MAC address-table mo
ve 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
messa
ges:
Switch# configure terminal
Switch(conf)# interface gigabitet
hernet1/0/1
Switch(conf-if)# switchport backu
p interface gigabitethernet0/2 mmu primary vlan 2
Switch(conf-if)# exit
Switch(conf)# mac address-table m
ove update transmit
Switch(conf)# end
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id 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.
Step 3
switchport backup interface interface-id
or
switchport backup interface int
erface-id mmu
primary vlan vlan-id
Configure a physical Layer 2 interf
ace (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 VL
AN ID on the interface, which is used
for sending the MAC address-table move update.
When one link is forwarding tra
ffic, the other interface is
in standby mode.
Step 4
end Return to global configuration mode.
Step 5
mac address-table move update transmit 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.
Step 6
end Return to privileged EXEC mode.
Step 7
show mac address-table move update Verify the configuration.
Step 8
copy running-config startup config (Optional) Save your entries in the switch startup
configuration file.

Cisco Catalyst 3750-X Specifications

General

Switching Capacity	160 Gbps
Stacking Bandwidth	64 Gbps
Max Stacking Units	9
Layer Support	Layer 2 and Layer 3
Form Factor	Rack-mountable
DRAM	256 MB
Flash Memory	64 MB
Model	Cisco Catalyst 3750-X Series
Ports	24 or 48 10/100/1000 Ethernet ports
Uplink Interfaces	4 SFP or 2 SFP+
Features	StackWise Plus, EnergyWise
Image	IP Base or IP Services
Operating Temperature	0 to 40°C
Operating Humidity	10 to 85% noncondensing