Cisco Catalyst 2960 Command Reference Manual page 502

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switchport backup interface

This example shows how to configure two interfaces as Flex Links:

Switch# configure terminal

Switch(conf)# interface fastethernet0/1

Switch(conf-if)# switchport backup interface fastethernet0/2

Switch(conf-if)# end

You can verify your setting by entering the show interfaces switchport backup privileged EXEC

Related Commands

show interfaces

switchport backup

Catalyst 2960 Switch Command Reference

Neither of the links can be a port that belongs to an EtherChannel. However, you can configure two

port channels (EtherChannel logical interfaces) as Flex Links, and you can configure a port channel

and a physical interface as Flex Links, with either the port channel or the physical interface as the

primary link.

If STP is configured on the switch, Flex Links do not participate in STP in all valid VLANs. If STP

is not running, be sure that there are no loops in the configured topology.

[interface-id]

Chapter 2 Catalyst 2960 Switch Cisco IOS Commands

Displays the configured Flex Links and their status on the switch or

for the specified interface.