Cisco Systems 2960 Manual De Usuario

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19-9
Catalyst 2960 and 2960-S Switch Software Configuration Guide
OL-8603-09
Chapter 19      Configuring Flex Links and the MAC Address-Table Move Update Feature
Configuring Flex Links and the MAC Address-Table Move Update
Configuring Flex Links
Beginning in privileged EXEC mode, follow these steps to configure a pair of Flex Links:
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 gigabitethernet0/1
Switch(conf-if)# switchport backup interface gigabitethernet0/2
Switch(conf-if)# end
Switch# show interfaces switchport backup
Switch Backup Interface Pairs:
Active Interface        Backup Interface        State
------------------------------------------------------------------------
GigabitEthernet0/1    GigabitEthernet0/3    Active Standby/Backup Up
Vlans Preferred on Active Interface: 1-3,5-4094
        Vlans Preferred on Backup Interface: 4
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 6.
Step 3
switchport backup interface interface-id
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.
Step 4
end 
Return to privileged EXEC mode.
Step 5
show interfaces [interface-id] switchport backup
Verify the configuration.
Step 6
copy running-config startup config
(Optional) Save your entries in the switch startup 
configuration file.