Switchport Backup Interface - Cisco IE-3000-8TC Command Reference Manual

Chapter 2 IE 3000 Switch Cisco IOS Commands

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.
Syntax Description FastEthernet
GigabitEthernet
Port-channel
TenGigabitEthernet
interface-id
mmu
primary vlan vlan-id
multicast
fast-convergence
preemption
delay delay-time
mode
prefer vlan vlan-id
off
delay delay-time
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
OL-13019-01
switchport backup interface [FastEthernet interface-id | GigabitEthernet interface-id |
Port-channel interface-id | TenGigabitEthernet interface-id] {mmu primary vlan
interface-id | multicast fast-convergence | preemption {delay delay-time | mode} | prefer
vlan vlan-id}
no switchport backup interface [FastEthernet interface-id | GigabitEthernet interface-id |
Port-channel interface-id | TenGigabitEthernet interface-id] {mmu primary vlan
interface-id | multicast fast-convergence | preemption {delay delay-time | mode} | prefer
vlan vlan-id}
FastEthernet IEEE 802.3 port name. Valid range is 0 to 9.
GigabitEthernet IEEE 802.3z port name. Valid range is 0 to 9.
Ethernet Channel of interface. Valid range is 0 to 48.
Ten Gigabit Ethernet port name. Valid range is 0 to 9.
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 486.
MAC-address move update. Configure the MAC move update (MMU) for a
backup interface pair.
The VLAN ID of the private-VLAN primary VLAN; valid range is 1 to
4,094.
Multicast Fast-convergence parameter.
Configure a preemption scheme for a backup interface pair.
(Optional) Specify a preemption delay; the valid values are 1 to 300 seconds.
Specify a preemption mode as bandwidth, forced, or off.
Specify that VLANs are carried on the backup interfaces of a Flex Link pair.
VLAN ID range is 1 to 4,094.
(Optional) Specify that no preemption occurs from backup to active.
(Optional) Specify a preemption delay; the valid values are 1 to 300 seconds.
switchport backup interface
Cisco IE 3000 Switch Command Reference
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