Configuring Flex Links - Cisco Catalyst 3120 Software Manual

Configuring Flex Links and MAC Address-Table Move Update
Configuring Flex Links and MAC Address-Table Move Update
This section contains this information:
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Configuring Flex Links

Beginning in privileged EXEC mode, follow these steps to configure a pair of Flex Links:
Command
Step 1 configure terminal
Step 2
interface interface-id
Step 3 switchport backup interface interface-id
Step 4 end
Step 5
show interface [interface-id] switchport backup
Step 6
copy running-config startup config
To disable a Flex Link backup interface, use the no switchport backup interface interface-id interface
configuration command.
This example shows how to configure an interface with a backup interface and to verify the
configuration:
Switch# configure terminal
Switch(conf)# interface gigabitethernet1/0/1
Switch(conf-if)# switchport backup interface gigabitethernet1/0/2
Switch(conf-if)# end
Switch# show interface switchport backup
Switch Backup Interface Pairs:
Active Interface Backup Interface State
------------------------------------------------------------------------
GigabitEthernet1/0/1 GigabitEthernet1/0/2 Active Up/Backup Standby
Cisco Catalyst Blade Switch 3120 for HP Software Configuration Guide
20-6
Configuring Flex Links, page 20-6
Configuring VLAN Load Balancing on Flex Links, page 20-8
Configuring the MAC Address-Table Move Update Feature, page 20-9
Chapter 20 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. When one
link is forwarding traffic, the other interface is in standby
mode.
Return to privileged EXEC mode.
Verify the configuration.
(Optional) Save your entries in the switch startup
configuration file.
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