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Cisco Catalyst Blade Switch 3030 Command Reference
78-17262-01
Chapter 2 Cisco
Catalyst
Blade Switch 3030 Cisco IOS Commands
switchport backup interface
switchport backup interface
Use the
switchport backup interface
interface configuration command on a Layer 2 interface to
configure Flex Links, a pair of interfaces that provide backup to each other. Use the
no
form of this
command to remove the Flex Links configuration.
switchport backup interface
{
interface-id
}
mmu
primary
vlan
vlan-id
switchport backup interface
{
interface-id
}
preemption
[
forced
|
bandwidth
|
off
] | [
delay
delay-time
]
no switchport backup interface
{
interface-id
}
mmu
primary
vlan
vlan-id
no switchport backup interface
{
interface-id
}
preemption
[
forced
|
bandwidth
|
off
] | [
delay
]
Syntax Description
Defaults
The default is to have no Flex Links defined.
Preemption mode is off. No preemption occurs.
Preemption delay is set to 35 seconds.
Command Modes
Interface configuration
Command History
interface-id
Specify that the Layer 2 interface to act as a backup link to the interface
being configured. The interface can be a physical interface or port channel.
The port-channel range is 1 to 48.
mmu
Configure the MAC move update (MMU) for a backup interface pair.
primary vlan
vlan-id
The VLAN ID of the private-VLAN primary VLAN; valid range is 1 to 4094.
preemption
Configure a preemption scheme for a backup interface pair.
forced
(Optional) Specify that the interface always preempts the backup.
bandwidth
(Optional) Specify that the interface with the higher available bandwidth
always preempts the backup.
off
(Optional) Specify that no preemption occurs from backup to active.
delay
delay-time
(Optional) Specify a preemption delay; the valid values are 1 to 300 seconds.
Release
Modification
12.2(25)SEE
This command was introduced.