Switchport Backup Interface - Cisco ME 3400 Command Reference Manual

Chapter 2 Cisco ME 3400 Ethernet Access Switch Cisco IOS Commands

switchport backup interface

Use the switchport backup interface interface configuration command on a Layer 2 interface on the
switch stack or on a standalone switch 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.
To use this command, the switch must be running the metro access or metro IP access image.
Syntax Description FastEthernet
GigabitEthernet
Port-channel
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
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switchport backup interface [FastEthernet interface-id | GigabitEthernet interface-id |
Port-channel 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] {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.
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.
Cisco ME 3400 Ethernet Access Switch Command Reference
switchport backup interface
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